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Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6

Browse Source 
* 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6: (42 commits)
  [IPV6]: Consolidate the ip6_pol_route_(input|output) pair
  [TCP]: Make snd_cwnd_cnt 32-bit
  [TCP]: Update the /proc/net/tcp documentation
  [NETNS]: Don't panic on creating the namespace's loopback
  [NEIGH]: Ensure that pneigh_lookup is protected with RTNL
  [INET]: kmalloc+memset -> kzalloc in frag_alloc_queue
  [ISDN]: Fix compile with CONFIG_ISDN_X25 disabled.
  [IPV6]: Replace sk_buff ** with sk_buff * in input handlers
  [SELINUX]: Update for netfilter ->hook() arg changes.
  [INET]: Consolidate the xxx_put
  [INET]: Small cleanup for xxx_put after evictor consolidation
  [INET]: Consolidate the xxx_evictor
  [INET]: Consolidate the xxx_frag_destroy
  [INET]: Consolidate xxx_the secret_rebuild
  [INET]: Consolidate the xxx_frag_kill
  [INET]: Collect common frag sysctl variables together
  [INET]: Collect frag queues management objects together
  [INET]: Move common fields from frag_queues in one place.
  [TG3]: Fix performance regression on 5705.
  [ISDN]: Remove local copy of device name to make sure renames work.
  ...
This commit is contained in:
Linus Torvalds 2007-10-15 14:06:58 -07:00
commit a52cefc80f
165 changed files with 2018 additions and 2254 deletions
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5
Documentation/networking/proc_net_tcp.txt
View File

@ -1,8 +1,9 @@
This document describes the interfaces /proc/net/tcp and /proc/net/tcp6.
Note that these interfaces are deprecated in favor of tcp_diag.
These /proc interfaces provide information about currently active TCP
connections, and are implemented by tcp_get_info() in net/ipv4/tcp_ipv4.c and
tcp6_get_info() in net/ipv6/tcp_ipv6.c, respectively.
connections, and are implemented by tcp4_seq_show() in net/ipv4/tcp_ipv4.c
and tcp6_seq_show() in net/ipv6/tcp_ipv6.c, respectively.
It will first list all listening TCP sockets, and next list all established
TCP connections. A typical entry of /proc/net/tcp would look like this (split

146
drivers/isdn/i4l/isdn_net.c
View File

@ -328,7 +328,7 @@ isdn_net_autohup(void)
l->cps = (l->transcount * HZ) / (jiffies - last_jiffies);
l->transcount = 0;
if (dev->net_verbose > 3)
printk(KERN_DEBUG "%s: %d bogocps\n", l->name, l->cps);
printk(KERN_DEBUG "%s: %d bogocps\n", p->dev->name, l->cps);
if ((l->flags & ISDN_NET_CONNECTED) && (!l->dialstate)) {
anymore = 1;
l->huptimer++;
@ -350,12 +350,12 @@ isdn_net_autohup(void)
if (l->hupflags & ISDN_CHARGEHUP) {
if (l->hupflags & ISDN_WAITCHARGE) {
printk(KERN_DEBUG "isdn_net: Hupflags of %s are %X\n",
l->name, l->hupflags);
p->dev->name, l->hupflags);
isdn_net_hangup(p->dev);
} else if (time_after(jiffies, l->chargetime + l->chargeint)) {
printk(KERN_DEBUG
"isdn_net: %s: chtime = %lu, chint = %d\n",
l->name, l->chargetime, l->chargeint);
p->dev->name, l->chargetime, l->chargeint);
isdn_net_hangup(p->dev);
}
} else
@ -442,8 +442,8 @@ isdn_net_stat_callback(int idx, isdn_ctrl *c)
#endif
isdn_net_lp_disconnected(lp);
isdn_all_eaz(lp->isdn_device, lp->isdn_channel);
printk(KERN_INFO "%s: remote hangup\n", lp->name);
printk(KERN_INFO "%s: Chargesum is %d\n", lp->name,
printk(KERN_INFO "%s: remote hangup\n", p->dev->name);
printk(KERN_INFO "%s: Chargesum is %d\n", p->dev->name,
lp->charge);
isdn_net_unbind_channel(lp);
return 1;
@ -487,7 +487,7 @@ isdn_net_stat_callback(int idx, isdn_ctrl *c)
isdn_net_add_to_bundle(nd, lp);
}
}
printk(KERN_INFO "isdn_net: %s connected\n", lp->name);
printk(KERN_INFO "isdn_net: %s connected\n", p->dev->name);
/* If first Chargeinfo comes before B-Channel connect,
* we correct the timestamp here.
*/
@ -534,7 +534,7 @@ isdn_net_stat_callback(int idx, isdn_ctrl *c)
lp->hupflags |= ISDN_HAVECHARGE;
lp->chargetime = jiffies;
printk(KERN_DEBUG "isdn_net: Got CINF chargetime of %s now %lu\n",
lp->name, lp->chargetime);
p->dev->name, lp->chargetime);
return 1;
}
}
@ -565,7 +565,7 @@ isdn_net_dial(void)
#ifdef ISDN_DEBUG_NET_DIAL
if (lp->dialstate)
printk(KERN_DEBUG "%s: dialstate=%d\n", lp->name, lp->dialstate);
printk(KERN_DEBUG "%s: dialstate=%d\n", p->dev->name, lp->dialstate);
#endif
switch (lp->dialstate) {
case 0:
@ -578,7 +578,7 @@ isdn_net_dial(void)
lp->dial = lp->phone[1];
if (!lp->dial) {
printk(KERN_WARNING "%s: phone number deleted?\n",
lp->name);
p->dev->name);
isdn_net_hangup(p->dev);
break;
}
@ -632,13 +632,13 @@ isdn_net_dial(void)
cmd.arg = lp->isdn_channel;
if (!lp->dial) {
printk(KERN_WARNING "%s: phone number deleted?\n",
lp->name);
p->dev->name);
isdn_net_hangup(p->dev);
break;
}
if (!strncmp(lp->dial->num, "LEASED", strlen("LEASED"))) {
lp->dialstate = 4;
printk(KERN_INFO "%s: Open leased line ...\n", lp->name);
printk(KERN_INFO "%s: Open leased line ...\n", p->dev->name);
} else {
if(lp->dialtimeout > 0)
if (time_after(jiffies, lp->dialstarted + lp->dialtimeout)) {
@ -688,7 +688,7 @@ isdn_net_dial(void)
dev->usage[i] |= ISDN_USAGE_OUTGOING;
isdn_info_update();
}
printk(KERN_INFO "%s: dialing %d %s... %s\n", lp->name,
printk(KERN_INFO "%s: dialing %d %s... %s\n", p->dev->name,
lp->dialretry, cmd.parm.setup.phone,
(cmd.parm.setup.si1 == 1) ? "DOV" : "");
lp->dtimer = 0;
@ -797,7 +797,7 @@ isdn_net_dial(void)
*/
if (lp->dtimer++ > lp->cbdelay)
{
printk(KERN_INFO "%s: hangup waiting for callback ...\n", lp->name);
printk(KERN_INFO "%s: hangup waiting for callback ...\n", p->dev->name);
lp->dtimer = 0;
lp->dialstate = 4;
cmd.driver = lp->isdn_device;
@ -810,7 +810,7 @@ isdn_net_dial(void)
break;
default:
printk(KERN_WARNING "isdn_net: Illegal dialstate %d for device %s\n",
lp->dialstate, lp->name);
lp->dialstate, p->dev->name);
}
p = (isdn_net_dev *) p->next;
}
@ -836,11 +836,11 @@ isdn_net_hangup(struct net_device *d)
if (slp->flags & ISDN_NET_CONNECTED) {
printk(KERN_INFO
"isdn_net: hang up slave %s before %s\n",
slp->name, lp->name);
lp->slave->name, d->name);
isdn_net_hangup(lp->slave);
}
}
printk(KERN_INFO "isdn_net: local hangup %s\n", lp->name);
printk(KERN_INFO "isdn_net: local hangup %s\n", d->name);
#ifdef CONFIG_ISDN_PPP
if (lp->p_encap == ISDN_NET_ENCAP_SYNCPPP)
isdn_ppp_free(lp);
@ -858,7 +858,7 @@ isdn_net_hangup(struct net_device *d)
cmd.command = ISDN_CMD_HANGUP;
cmd.arg = lp->isdn_channel;
isdn_command(&cmd);
printk(KERN_INFO "%s: Chargesum is %d\n", lp->name, lp->charge);
printk(KERN_INFO "%s: Chargesum is %d\n", d->name, lp->charge);
isdn_all_eaz(lp->isdn_device, lp->isdn_channel);
}
isdn_net_unbind_channel(lp);
@ -885,7 +885,7 @@ isdn_net_log_skb(struct sk_buff * skb, isdn_net_local * lp)
/* fall back to old isdn_net_log_packet method() */
char * buf = skb->data;
printk(KERN_DEBUG "isdn_net: protocol %04x is buggy, dev %s\n", skb->protocol, lp->name);
printk(KERN_DEBUG "isdn_net: protocol %04x is buggy, dev %s\n", skb->protocol, lp->netdev->dev->name);
p = buf;
proto = ETH_P_IP;
switch (lp->p_encap) {
@ -1023,7 +1023,7 @@ void isdn_net_writebuf_skb(isdn_net_local *lp, struct sk_buff *skb)
ret = isdn_writebuf_skb_stub(lp->isdn_device, lp->isdn_channel, 1, skb);
if (ret != len) {
/* we should never get here */
printk(KERN_WARNING "%s: HL driver queue full\n", lp->name);
printk(KERN_WARNING "%s: HL driver queue full\n", lp->netdev->dev->name);
goto error;
}
@ -1461,7 +1461,7 @@ isdn_ciscohdlck_dev_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
mod_timer(&lp->cisco_timer, expires);
printk(KERN_INFO "%s: Keepalive period set "
"to %d seconds.\n",
lp->name, lp->cisco_keepalive_period);
dev->name, lp->cisco_keepalive_period);
}
break;
@ -1512,7 +1512,7 @@ isdn_net_ciscohdlck_slarp_send_keepalive(unsigned long data)
lp->cisco_line_state = 0;
printk (KERN_WARNING
"UPDOWN: Line protocol on Interface %s,"
" changed state to down\n", lp->name);
" changed state to down\n", lp->netdev->dev->name);
/* should stop routing higher-level data accross */
} else if ((!lp->cisco_line_state) &&
(myseq_diff >= 0) && (myseq_diff <= 2)) {
@ -1520,14 +1520,14 @@ isdn_net_ciscohdlck_slarp_send_keepalive(unsigned long data)
lp->cisco_line_state = 1;
printk (KERN_WARNING
"UPDOWN: Line protocol on Interface %s,"
" changed state to up\n", lp->name);
" changed state to up\n", lp->netdev->dev->name);
/* restart routing higher-level data accross */
}
if (lp->cisco_debserint)
printk (KERN_DEBUG "%s: HDLC "
"myseq %lu, mineseen %lu%c, yourseen %lu, %s\n",
lp->name, last_cisco_myseq, lp->cisco_mineseen,
lp->netdev->dev->name, last_cisco_myseq, lp->cisco_mineseen,
((last_cisco_myseq == lp->cisco_mineseen) ? '*' : 040),
lp->cisco_yourseq,
((lp->cisco_line_state) ? "line up" : "line down"));
@ -1682,7 +1682,7 @@ isdn_net_ciscohdlck_slarp_in(isdn_net_local *lp, struct sk_buff *skb)
"remote ip: %d.%d.%d.%d, "
"local ip: %d.%d.%d.%d "
"mask: %d.%d.%d.%d\n",
lp->name,
lp->netdev->dev->name,
HIPQUAD(addr),
HIPQUAD(local),
HIPQUAD(mask));
@ -1690,7 +1690,7 @@ isdn_net_ciscohdlck_slarp_in(isdn_net_local *lp, struct sk_buff *skb)
slarp_reply_out:
printk(KERN_INFO "%s: got invalid slarp "
"reply (%d.%d.%d.%d/%d.%d.%d.%d) "
"- ignored\n", lp->name,
"- ignored\n", lp->netdev->dev->name,
HIPQUAD(addr), HIPQUAD(mask));
break;
case CISCO_SLARP_KEEPALIVE:
@ -1701,7 +1701,8 @@ isdn_net_ciscohdlck_slarp_in(isdn_net_local *lp, struct sk_buff *skb)
lp->cisco_last_slarp_in) {
printk(KERN_DEBUG "%s: Keepalive period mismatch - "
"is %d but should be %d.\n",
lp->name, period, lp->cisco_keepalive_period);
lp->netdev->dev->name, period,
lp->cisco_keepalive_period);
}
lp->cisco_last_slarp_in = jiffies;
p += get_u32(p, &my_seq);
@ -1732,12 +1733,12 @@ isdn_net_ciscohdlck_receive(isdn_net_local *lp, struct sk_buff *skb)
if (addr != CISCO_ADDR_UNICAST && addr != CISCO_ADDR_BROADCAST) {
printk(KERN_WARNING "%s: Unknown Cisco addr 0x%02x\n",
lp->name, addr);
lp->netdev->dev->name, addr);
goto out_free;
}
if (ctrl != CISCO_CTRL) {
printk(KERN_WARNING "%s: Unknown Cisco ctrl 0x%02x\n",
lp->name, ctrl);
lp->netdev->dev->name, ctrl);
goto out_free;
}
@ -1748,7 +1749,8 @@ isdn_net_ciscohdlck_receive(isdn_net_local *lp, struct sk_buff *skb)
case CISCO_TYPE_CDP:
if (lp->cisco_debserint)
printk(KERN_DEBUG "%s: Received CDP packet. use "
"\"no cdp enable\" on cisco.\n", lp->name);
"\"no cdp enable\" on cisco.\n",
lp->netdev->dev->name);
goto out_free;
default:
/* no special cisco protocol */
@ -1843,7 +1845,7 @@ isdn_net_receive(struct net_device *ndev, struct sk_buff *skb)
};
#endif /* CONFIG_ISDN_X25 */
printk(KERN_WARNING "%s: unknown encapsulation, dropping\n",
lp->name);
lp->netdev->dev->name);
kfree_skb(skb);
return;
}
@ -2174,7 +2176,7 @@ isdn_net_find_icall(int di, int ch, int idx, setup_parm *setup)
wret = matchret;
#ifdef ISDN_DEBUG_NET_ICALL
printk(KERN_DEBUG "n_fi: if='%s', l.msn=%s, l.flags=%d, l.dstate=%d\n",
lp->name, lp->msn, lp->flags, lp->dialstate);
p->dev->name, lp->msn, lp->flags, lp->dialstate);
#endif
if ((!matchret) && /* EAZ is matching */
(((!(lp->flags & ISDN_NET_CONNECTED)) && /* but not connected */
@ -2277,7 +2279,7 @@ isdn_net_find_icall(int di, int ch, int idx, setup_parm *setup)
* */
if (ISDN_NET_DIALMODE(*lp) == ISDN_NET_DM_OFF) {
printk(KERN_INFO "incoming call, interface %s `stopped' -> rejected\n",
lp->name);
p->dev->name);
return 3;
}
/*
@ -2286,7 +2288,7 @@ isdn_net_find_icall(int di, int ch, int idx, setup_parm *setup)
*/
if (!isdn_net_device_started(p)) {
printk(KERN_INFO "%s: incoming call, interface down -> rejected\n",
lp->name);
p->dev->name);
return 3;
}
/* Interface is up, now see if it's a slave. If so, see if
@ -2294,8 +2296,8 @@ isdn_net_find_icall(int di, int ch, int idx, setup_parm *setup)
*/
if (lp->master) {
isdn_net_local *mlp = (isdn_net_local *) lp->master->priv;
printk(KERN_DEBUG "ICALLslv: %s\n", lp->name);
printk(KERN_DEBUG "master=%s\n", mlp->name);
printk(KERN_DEBUG "ICALLslv: %s\n", p->dev->name);
printk(KERN_DEBUG "master=%s\n", lp->master->name);
if (mlp->flags & ISDN_NET_CONNECTED) {
printk(KERN_DEBUG "master online\n");
/* Master is online, find parent-slave (master if first slave) */
@ -2322,11 +2324,11 @@ isdn_net_find_icall(int di, int ch, int idx, setup_parm *setup)
* */
if (ISDN_NET_DIALMODE(*lp) == ISDN_NET_DM_OFF) {
printk(KERN_INFO "incoming call for callback, interface %s `off' -> rejected\n",
lp->name);
p->dev->name);
return 3;
}
printk(KERN_DEBUG "%s: call from %s -> %s, start callback\n",
lp->name, nr, eaz);
p->dev->name, nr, eaz);
if (lp->phone[1]) {
/* Grab a free ISDN-Channel */
spin_lock_irqsave(&dev->lock, flags);
@ -2340,7 +2342,8 @@ isdn_net_find_icall(int di, int ch, int idx, setup_parm *setup)
lp->msn)
) < 0) {
printk(KERN_WARNING "isdn_net_find_icall: No channel for %s\n", lp->name);
printk(KERN_WARNING "isdn_net_find_icall: No channel for %s\n",
p->dev->name);
spin_unlock_irqrestore(&dev->lock, flags);
return 0;
}
@ -2361,11 +2364,12 @@ isdn_net_find_icall(int di, int ch, int idx, setup_parm *setup)
/* Initiate dialing by returning 2 or 4 */
return (lp->flags & ISDN_NET_CBHUP) ? 2 : 4;
} else
printk(KERN_WARNING "isdn_net: %s: No phone number\n", lp->name);
printk(KERN_WARNING "isdn_net: %s: No phone number\n",
p->dev->name);
return 0;
} else {
printk(KERN_DEBUG "%s: call from %s -> %s accepted\n", lp->name, nr,
eaz);
printk(KERN_DEBUG "%s: call from %s -> %s accepted\n",
p->dev->name, nr, eaz);
/* if this interface is dialing, it does it probably on a different
device, so free this device */
if ((lp->dialstate == 4) || (lp->dialstate == 12)) {
@ -2424,7 +2428,7 @@ isdn_net_findif(char *name)
isdn_net_dev *p = dev->netdev;
while (p) {
if (!strcmp(p->local->name, name))
if (!strcmp(p->dev->name, name))
return p;
p = (isdn_net_dev *) p->next;
}
@ -2453,7 +2457,8 @@ isdn_net_force_dial_lp(isdn_net_local * lp)
lp->pre_device,
lp->pre_channel,
lp->msn)) < 0) {
printk(KERN_WARNING "isdn_net_force_dial: No channel for %s\n", lp->name);
printk(KERN_WARNING "isdn_net_force_dial: No channel for %s\n",
lp->netdev->dev->name);
spin_unlock_irqrestore(&dev->lock, flags);
return -EAGAIN;
}
@ -2556,7 +2561,7 @@ isdn_net_new(char *name, struct net_device *master)
return NULL;
}
if (name == NULL)
name = " ";
return NULL;
if (!(netdev = kzalloc(sizeof(isdn_net_dev), GFP_KERNEL))) {
printk(KERN_WARNING "isdn_net: Could not allocate net-device\n");
return NULL;
@ -2568,7 +2573,6 @@ isdn_net_new(char *name, struct net_device *master)
return NULL;
}
netdev->local = netdev->dev->priv;
strcpy(netdev->local->name, netdev->dev->name);
netdev->dev->init = isdn_net_init;
if (master) {
/* Device shall be a slave */
@ -2673,7 +2677,7 @@ isdn_net_setcfg(isdn_net_ioctl_cfg * cfg)
#endif
if (isdn_net_device_started(p)) {
printk(KERN_WARNING "%s: cannot change encap when if is up\n",
lp->name);
p->dev->name);
return -EBUSY;
}
#ifdef CONFIG_ISDN_X25
@ -2698,7 +2702,7 @@ isdn_net_setcfg(isdn_net_ioctl_cfg * cfg)
case ISDN_NET_ENCAP_SYNCPPP:
#ifndef CONFIG_ISDN_PPP
printk(KERN_WARNING "%s: SyncPPP support not configured\n",
lp->name);
p->dev->name);
return -EINVAL;
#else
p->dev->type = ARPHRD_PPP; /* change ARP type */
@ -2709,7 +2713,7 @@ isdn_net_setcfg(isdn_net_ioctl_cfg * cfg)
case ISDN_NET_ENCAP_X25IFACE:
#ifndef CONFIG_ISDN_X25
printk(KERN_WARNING "%s: isdn-x25 support not configured\n",
p->local->name);
p->dev->name);
return -EINVAL;
#else
p->dev->type = ARPHRD_X25; /* change ARP type */
@ -2725,7 +2729,7 @@ isdn_net_setcfg(isdn_net_ioctl_cfg * cfg)
break;
printk(KERN_WARNING
"%s: encapsulation protocol %d not supported\n",
p->local->name, cfg->p_encap);
p->dev->name, cfg->p_encap);
return -EINVAL;
}
if (strlen(cfg->drvid)) {
@ -2902,13 +2906,18 @@ isdn_net_getcfg(isdn_net_ioctl_cfg * cfg)
cfg->pppbind = lp->pppbind;
cfg->dialtimeout = lp->dialtimeout >= 0 ? lp->dialtimeout / HZ : -1;
cfg->dialwait = lp->dialwait / HZ;
if (lp->slave)
strcpy(cfg->slave, ((isdn_net_local *) lp->slave->priv)->name);
else
if (lp->slave) {
if (strlen(lp->slave->name) > 8)
strcpy(cfg->slave, "too-long");
else
strcpy(cfg->slave, lp->slave->name);
} else
cfg->slave[0] = '\0';
if (lp->master)
strcpy(cfg->master, ((isdn_net_local *) lp->master->priv)->name);
else
if (lp->master) {
if (strlen(lp->master->name) > 8)
strcpy(cfg->master, "too-long");
strcpy(cfg->master, lp->master->name);
} else
cfg->master[0] = '\0';
return 0;
}
@ -2978,7 +2987,8 @@ isdn_net_getpeer(isdn_net_ioctl_phone *phone, isdn_net_ioctl_phone __user *peer)
isdn_net_dev *p = isdn_net_findif(phone->name);
int ch, dv, idx;
if (!p) return -ENODEV;
if (!p)
return -ENODEV;
/*
* Theoretical race: while this executes, the remote number might
* become invalid (hang up) or change (new connection), resulting
@ -2987,14 +2997,18 @@ isdn_net_getpeer(isdn_net_ioctl_phone *phone, isdn_net_ioctl_phone __user *peer)
*/
ch = p->local->isdn_channel;
dv = p->local->isdn_device;
if(ch<0 && dv<0) return -ENOTCONN;
if(ch < 0 && dv < 0)
return -ENOTCONN;
idx = isdn_dc2minor(dv, ch);
if (idx<0) return -ENODEV;
if (idx <0 )
return -ENODEV;
/* for pre-bound channels, we need this extra check */
if ( strncmp(dev->num[idx],"???",3) == 0 ) return -ENOTCONN;
strncpy(phone->phone,dev->num[idx],ISDN_MSNLEN);
phone->outgoing=USG_OUTGOING(dev->usage[idx]);
if ( copy_to_user(peer,phone,sizeof(*peer)) ) return -EFAULT;
if (strncmp(dev->num[idx], "???", 3) == 0)
return -ENOTCONN;
strncpy(phone->phone, dev->num[idx], ISDN_MSNLEN);
phone->outgoing = USG_OUTGOING(dev->usage[idx]);
if (copy_to_user(peer, phone, sizeof(*peer)))
return -EFAULT;
return 0;
}
/*
@ -3113,18 +3127,18 @@ isdn_net_realrm(isdn_net_dev * p, isdn_net_dev * q)
dev->netdev = p->next;
if (p->local->slave) {
/* If this interface has a slave, remove it also */
char *slavename = ((isdn_net_local *) (p->local->slave->priv))->name;
char *slavename = p->local->slave->name;
isdn_net_dev *n = dev->netdev;
q = NULL;
while (n) {
if (!strcmp(n->local->name, slavename)) {
if (!strcmp(n->dev->name, slavename)) {
spin_unlock_irqrestore(&dev->lock, flags);
isdn_net_realrm(n, q);
spin_lock_irqsave(&dev->lock, flags);
break;
}
q = n;
n = (isdn_net_dev *) n->next;
n = (isdn_net_dev *)n->next;
}
}
spin_unlock_irqrestore(&dev->lock, flags);
@ -3152,7 +3166,7 @@ isdn_net_rm(char *name)
p = dev->netdev;
q = NULL;
while (p) {
if (!strcmp(p->local->name, name)) {
if (!strcmp(p->dev->name, name)) {
spin_unlock_irqrestore(&dev->lock, flags);
return (isdn_net_realrm(p, q));
}

9
drivers/isdn/i4l/isdn_ppp.c
View File

@ -190,9 +190,11 @@ isdn_ppp_bind(isdn_net_local * lp)
retval = -1;
goto out;
}
unit = isdn_ppp_if_get_unit(lp->name); /* get unit number from interface name .. ugly! */
/* get unit number from interface name .. ugly! */
unit = isdn_ppp_if_get_unit(lp->netdev->dev->name);
if (unit < 0) {
printk(KERN_ERR "isdn_ppp_bind: illegal interface name %s.\n", lp->name);
printk(KERN_ERR "isdn_ppp_bind: illegal interface name %s.\n",
lp->netdev->dev->name);
retval = -1;
goto out;
}
@ -507,7 +509,8 @@ isdn_ppp_ioctl(int min, struct file *file, unsigned int cmd, unsigned long arg)
case PPPIOCGIFNAME:
if(!lp)
return -EINVAL;
if ((r = set_arg(argp, lp->name, strlen(lp->name))))
if ((r = set_arg(argp, lp->netdev->dev->name,
strlen(lp->netdev->dev->name))))
return r;
break;
case PPPIOCGMPFLAGS: /* get configuration flags */

11
drivers/net/loopback.c
View File

@ -265,17 +265,16 @@ static __net_init int loopback_net_init(struct net *net)
if (err)
goto out_free_netdev;
err = 0;
net->loopback_dev = dev;
return 0;
out:
if (err)
panic("loopback: Failed to register netdevice: %d\n", err);
return err;
out_free_netdev:
free_netdev(dev);
goto out;
out:
if (net == &init_net)
panic("loopback: Failed to register netdevice: %d\n", err);
return err;
}
static __net_exit void loopback_net_exit(struct net *net)

19
drivers/net/niu.c
View File

@ -6123,19 +6123,19 @@ static int __devinit niu_pci_probe_sprom(struct niu *np)
val = nr64(ESPC_PHY_TYPE);
switch (np->port) {
case 0:
val = (val & ESPC_PHY_TYPE_PORT0) >>
val8 = (val & ESPC_PHY_TYPE_PORT0) >>
ESPC_PHY_TYPE_PORT0_SHIFT;
break;
case 1:
val = (val & ESPC_PHY_TYPE_PORT1) >>
val8 = (val & ESPC_PHY_TYPE_PORT1) >>
ESPC_PHY_TYPE_PORT1_SHIFT;
break;
case 2:
val = (val & ESPC_PHY_TYPE_PORT2) >>
val8 = (val & ESPC_PHY_TYPE_PORT2) >>
ESPC_PHY_TYPE_PORT2_SHIFT;
break;
case 3:
val = (val & ESPC_PHY_TYPE_PORT3) >>
val8 = (val & ESPC_PHY_TYPE_PORT3) >>
ESPC_PHY_TYPE_PORT3_SHIFT;
break;
default:
@ -6143,9 +6143,9 @@ static int __devinit niu_pci_probe_sprom(struct niu *np)
np->port);
return -EINVAL;
}
niudbg(PROBE, "SPROM: PHY type %llx\n", (unsigned long long) val);
niudbg(PROBE, "SPROM: PHY type %x\n", val8);
switch (val) {
switch (val8) {
case ESPC_PHY_TYPE_1G_COPPER:
/* 1G copper, MII */
np->flags &= ~(NIU_FLAGS_FIBER |
@ -6175,8 +6175,7 @@ static int __devinit niu_pci_probe_sprom(struct niu *np)
break;
default:
dev_err(np->device, PFX "Bogus SPROM phy type %llu\n",
(unsigned long long) val);
dev_err(np->device, PFX "Bogus SPROM phy type %u\n", val8);
return -EINVAL;
}
@ -6213,7 +6212,7 @@ static int __devinit niu_pci_probe_sprom(struct niu *np)
val = nr64(ESPC_MOD_STR_LEN);
niudbg(PROBE, "SPROM: MOD_STR_LEN[%llu]\n",
(unsigned long long) val);
if (val > 8 * 4)
if (val >= 8 * 4)
return -EINVAL;
for (i = 0; i < val; i += 4) {
@ -6229,7 +6228,7 @@ static int __devinit niu_pci_probe_sprom(struct niu *np)
val = nr64(ESPC_BD_MOD_STR_LEN);
niudbg(PROBE, "SPROM: BD_MOD_STR_LEN[%llu]\n",
(unsigned long long) val);
if (val > 4 * 4)
if (val >= 4 * 4)
return -EINVAL;
for (i = 0; i < val; i += 4) {

10
drivers/net/tg3.c
View File

@ -64,8 +64,8 @@
#define DRV_MODULE_NAME "tg3"
#define PFX DRV_MODULE_NAME ": "
#define DRV_MODULE_VERSION "3.83"
#define DRV_MODULE_RELDATE "October 10, 2007"
#define DRV_MODULE_VERSION "3.84"
#define DRV_MODULE_RELDATE "October 12, 2007"
#define TG3_DEF_MAC_MODE 0
#define TG3_DEF_RX_MODE 0
@ -5056,6 +5056,12 @@ static void tg3_restore_pci_state(struct tg3 *tp)
pci_write_config_dword(tp->pdev, TG3PCI_COMMAND, tp->pci_cmd);
if (!(tp->tg3_flags2 & TG3_FLG2_PCI_EXPRESS)) {
pci_write_config_byte(tp->pdev, PCI_CACHE_LINE_SIZE,
tp->pci_cacheline_sz);
pci_write_config_byte(tp->pdev, PCI_LATENCY_TIMER,
tp->pci_lat_timer);
}
/* Make sure PCI-X relaxed ordering bit is clear. */
if (tp->pcix_cap) {
u16 pcix_cmd;

2
include/linux/if_bridge.h
View File

@ -107,7 +107,7 @@ struct __fdb_entry
extern void brioctl_set(int (*ioctl_hook)(struct net *, unsigned int, void __user *));
extern struct sk_buff *(*br_handle_frame_hook)(struct net_bridge_port *p,
struct sk_buff *skb);
extern int (*br_should_route_hook)(struct sk_buff **pskb);
extern int (*br_should_route_hook)(struct sk_buff *skb);
#endif

1
include/linux/isdn.h
View File

@ -286,7 +286,6 @@ typedef struct {
/* Local interface-data */
typedef struct isdn_net_local_s {
ulong magic;
char name[10]; /* Name of device */
struct net_device_stats stats; /* Ethernet Statistics */
int isdn_device; /* Index to isdn-device */
int isdn_channel; /* Index to isdn-channel */

26
include/linux/netfilter.h
View File

@ -51,7 +51,7 @@ struct sk_buff;
struct net_device;
typedef unsigned int nf_hookfn(unsigned int hooknum,
struct sk_buff **skb,
struct sk_buff *skb,
const struct net_device *in,
const struct net_device *out,
int (*okfn)(struct sk_buff *));
@ -183,7 +183,7 @@ void nf_log_packet(int pf,
struct nf_loginfo *li,
const char *fmt, ...);
int nf_hook_slow(int pf, unsigned int hook, struct sk_buff **pskb,
int nf_hook_slow(int pf, unsigned int hook, struct sk_buff *skb,
struct net_device *indev, struct net_device *outdev,
int (*okfn)(struct sk_buff *), int thresh);
@ -195,7 +195,7 @@ int nf_hook_slow(int pf, unsigned int hook, struct sk_buff **pskb,
* value indicates the packet has been consumed by the hook.
*/
static inline int nf_hook_thresh(int pf, unsigned int hook,
struct sk_buff **pskb,
struct sk_buff *skb,
struct net_device *indev,
struct net_device *outdev,
int (*okfn)(struct sk_buff *), int thresh,
@ -207,14 +207,14 @@ static inline int nf_hook_thresh(int pf, unsigned int hook,
if (list_empty(&nf_hooks[pf][hook]))
return 1;
#endif
return nf_hook_slow(pf, hook, pskb, indev, outdev, okfn, thresh);
return nf_hook_slow(pf, hook, skb, indev, outdev, okfn, thresh);
}
static inline int nf_hook(int pf, unsigned int hook, struct sk_buff **pskb,
static inline int nf_hook(int pf, unsigned int hook, struct sk_buff *skb,
struct net_device *indev, struct net_device *outdev,
int (*okfn)(struct sk_buff *))
{
return nf_hook_thresh(pf, hook, pskb, indev, outdev, okfn, INT_MIN, 1);
return nf_hook_thresh(pf, hook, skb, indev, outdev, okfn, INT_MIN, 1);
}
/* Activate hook; either okfn or kfree_skb called, unless a hook
@ -241,13 +241,13 @@ static inline int nf_hook(int pf, unsigned int hook, struct sk_buff **pskb,
#define NF_HOOK_THRESH(pf, hook, skb, indev, outdev, okfn, thresh) \
({int __ret; \
if ((__ret=nf_hook_thresh(pf, hook, &(skb), indev, outdev, okfn, thresh, 1)) == 1)\
if ((__ret=nf_hook_thresh(pf, hook, (skb), indev, outdev, okfn, thresh, 1)) == 1)\
__ret = (okfn)(skb); \
__ret;})
#define NF_HOOK_COND(pf, hook, skb, indev, outdev, okfn, cond) \
({int __ret; \
if ((__ret=nf_hook_thresh(pf, hook, &(skb), indev, outdev, okfn, INT_MIN, cond)) == 1)\
if ((__ret=nf_hook_thresh(pf, hook, (skb), indev, outdev, okfn, INT_MIN, cond)) == 1)\
__ret = (okfn)(skb); \
__ret;})
@ -287,7 +287,7 @@ extern void nf_invalidate_cache(int pf);
/* Call this before modifying an existing packet: ensures it is
modifiable and linear to the point you care about (writable_len).
Returns true or false. */
extern int skb_make_writable(struct sk_buff **pskb, unsigned int writable_len);
extern int skb_make_writable(struct sk_buff *skb, unsigned int writable_len);
static inline void nf_csum_replace4(__sum16 *sum, __be32 from, __be32 to)
{
@ -317,7 +317,7 @@ struct nf_afinfo {
unsigned int dataoff, u_int8_t protocol);
void (*saveroute)(const struct sk_buff *skb,
struct nf_info *info);
int (*reroute)(struct sk_buff **skb,
int (*reroute)(struct sk_buff *skb,
const struct nf_info *info);
int route_key_size;
};
@ -371,15 +371,15 @@ extern struct proc_dir_entry *proc_net_netfilter;
#define NF_HOOK(pf, hook, skb, indev, outdev, okfn) (okfn)(skb)
#define NF_HOOK_COND(pf, hook, skb, indev, outdev, okfn, cond) (okfn)(skb)
static inline int nf_hook_thresh(int pf, unsigned int hook,
struct sk_buff **pskb,
struct sk_buff *skb,
struct net_device *indev,
struct net_device *outdev,
int (*okfn)(struct sk_buff *), int thresh,
int cond)
{
return okfn(*pskb);
return okfn(skb);
}
static inline int nf_hook(int pf, unsigned int hook, struct sk_buff **pskb,
static inline int nf_hook(int pf, unsigned int hook, struct sk_buff *skb,
struct net_device *indev, struct net_device *outdev,
int (*okfn)(struct sk_buff *))
{

2
include/linux/netfilter/nf_conntrack_amanda.h
View File

@ -2,7 +2,7 @@
#define _NF_CONNTRACK_AMANDA_H
/* AMANDA tracking. */
extern unsigned int (*nf_nat_amanda_hook)(struct sk_buff **pskb,
extern unsigned int (*nf_nat_amanda_hook)(struct sk_buff *skb,
enum ip_conntrack_info ctinfo,
unsigned int matchoff,
unsigned int matchlen,

2
include/linux/netfilter/nf_conntrack_ftp.h
View File

@ -32,7 +32,7 @@ struct nf_conntrack_expect;
/* For NAT to hook in when we find a packet which describes what other
* connection we should expect. */
extern unsigned int (*nf_nat_ftp_hook)(struct sk_buff **pskb,
extern unsigned int (*nf_nat_ftp_hook)(struct sk_buff *skb,
enum ip_conntrack_info ctinfo,
enum nf_ct_ftp_type type,
unsigned int matchoff,

18
include/linux/netfilter/nf_conntrack_h323.h
View File

@ -36,27 +36,27 @@ extern void nf_conntrack_h245_expect(struct nf_conn *new,
struct nf_conntrack_expect *this);
extern void nf_conntrack_q931_expect(struct nf_conn *new,
struct nf_conntrack_expect *this);
extern int (*set_h245_addr_hook) (struct sk_buff **pskb,
extern int (*set_h245_addr_hook) (struct sk_buff *skb,
unsigned char **data, int dataoff,
H245_TransportAddress *taddr,
union nf_conntrack_address *addr,
__be16 port);
extern int (*set_h225_addr_hook) (struct sk_buff **pskb,
extern int (*set_h225_addr_hook) (struct sk_buff *skb,
unsigned char **data, int dataoff,
TransportAddress *taddr,
union nf_conntrack_address *addr,
__be16 port);
extern int (*set_sig_addr_hook) (struct sk_buff **pskb,
extern int (*set_sig_addr_hook) (struct sk_buff *skb,
struct nf_conn *ct,
enum ip_conntrack_info ctinfo,
unsigned char **data,
TransportAddress *taddr, int count);
extern int (*set_ras_addr_hook) (struct sk_buff **pskb,
extern int (*set_ras_addr_hook) (struct sk_buff *skb,
struct nf_conn *ct,
enum ip_conntrack_info ctinfo,
unsigned char **data,
TransportAddress *taddr, int count);
extern int (*nat_rtp_rtcp_hook) (struct sk_buff **pskb,
extern int (*nat_rtp_rtcp_hook) (struct sk_buff *skb,
struct nf_conn *ct,
enum ip_conntrack_info ctinfo,
unsigned char **data, int dataoff,
@ -64,24 +64,24 @@ extern int (*nat_rtp_rtcp_hook) (struct sk_buff **pskb,
__be16 port, __be16 rtp_port,
struct nf_conntrack_expect *rtp_exp,
struct nf_conntrack_expect *rtcp_exp);
extern int (*nat_t120_hook) (struct sk_buff **pskb, struct nf_conn *ct,
extern int (*nat_t120_hook) (struct sk_buff *skb, struct nf_conn *ct,
enum ip_conntrack_info ctinfo,
unsigned char **data, int dataoff,
H245_TransportAddress *taddr, __be16 port,
struct nf_conntrack_expect *exp);
extern int (*nat_h245_hook) (struct sk_buff **pskb, struct nf_conn *ct,
extern int (*nat_h245_hook) (struct sk_buff *skb, struct nf_conn *ct,
enum ip_conntrack_info ctinfo,
unsigned char **data, int dataoff,
TransportAddress *taddr, __be16 port,
struct nf_conntrack_expect *exp);
extern int (*nat_callforwarding_hook) (struct sk_buff **pskb,
extern int (*nat_callforwarding_hook) (struct sk_buff *skb,
struct nf_conn *ct,
enum ip_conntrack_info ctinfo,
unsigned char **data, int dataoff,
TransportAddress *taddr,
__be16 port,
struct nf_conntrack_expect *exp);
extern int (*nat_q931_hook) (struct sk_buff **pskb, struct nf_conn *ct,
extern int (*nat_q931_hook) (struct sk_buff *skb, struct nf_conn *ct,
enum ip_conntrack_info ctinfo,
unsigned char **data, TransportAddress *taddr,
int idx, __be16 port,

2
include/linux/netfilter/nf_conntrack_irc.h
View File

@ -5,7 +5,7 @@
#define IRC_PORT 6667
extern unsigned int (*nf_nat_irc_hook)(struct sk_buff **pskb,
extern unsigned int (*nf_nat_irc_hook)(struct sk_buff *skb,
enum ip_conntrack_info ctinfo,
unsigned int matchoff,
unsigned int matchlen,

4
include/linux/netfilter/nf_conntrack_pptp.h
View File

@ -301,13 +301,13 @@ struct nf_conn;
struct nf_conntrack_expect;
extern int
(*nf_nat_pptp_hook_outbound)(struct sk_buff **pskb,
(*nf_nat_pptp_hook_outbound)(struct sk_buff *skb,
struct nf_conn *ct, enum ip_conntrack_info ctinfo,
struct PptpControlHeader *ctlh,
union pptp_ctrl_union *pptpReq);
extern int
(*nf_nat_pptp_hook_inbound)(struct sk_buff **pskb,
(*nf_nat_pptp_hook_inbound)(struct sk_buff *skb,
struct nf_conn *ct, enum ip_conntrack_info ctinfo,
struct PptpControlHeader *ctlh,
union pptp_ctrl_union *pptpReq);

4
include/linux/netfilter/nf_conntrack_sip.h
View File

@ -21,11 +21,11 @@ enum sip_header_pos {
POS_SDP_HEADER,
};
extern unsigned int (*nf_nat_sip_hook)(struct sk_buff **pskb,
extern unsigned int (*nf_nat_sip_hook)(struct sk_buff *skb,
enum ip_conntrack_info ctinfo,
struct nf_conn *ct,
const char **dptr);
extern unsigned int (*nf_nat_sdp_hook)(struct sk_buff **pskb,
extern unsigned int (*nf_nat_sdp_hook)(struct sk_buff *skb,
enum ip_conntrack_info ctinfo,
struct nf_conntrack_expect *exp,
const char *dptr);

2
include/linux/netfilter/nf_conntrack_tftp.h
View File

@ -13,7 +13,7 @@ struct tftphdr {
#define TFTP_OPCODE_ACK 4
#define TFTP_OPCODE_ERROR 5
extern unsigned int (*nf_nat_tftp_hook)(struct sk_buff **pskb,
extern unsigned int (*nf_nat_tftp_hook)(struct sk_buff *skb,
enum ip_conntrack_info ctinfo,
struct nf_conntrack_expect *exp);

2
include/linux/netfilter/x_tables.h
View File

@ -191,7 +191,7 @@ struct xt_target
/* Returns verdict. Argument order changed since 2.6.9, as this
must now handle non-linear skbs, using skb_copy_bits and
skb_ip_make_writable. */
unsigned int (*target)(struct sk_buff **pskb,
unsigned int (*target)(struct sk_buff *skb,
const struct net_device *in,
const struct net_device *out,
unsigned int hooknum,

2
include/linux/netfilter_arp/arp_tables.h
View File

@ -287,7 +287,7 @@ struct arpt_error
extern int arpt_register_table(struct arpt_table *table,
const struct arpt_replace *repl);
extern void arpt_unregister_table(struct arpt_table *table);
extern unsigned int arpt_do_table(struct sk_buff **pskb,
extern unsigned int arpt_do_table(struct sk_buff *skb,
unsigned int hook,
const struct net_device *in,
const struct net_device *out,

4
include/linux/netfilter_bridge/ebtables.h
View File

@ -237,7 +237,7 @@ struct ebt_target
struct list_head list;
const char name[EBT_FUNCTION_MAXNAMELEN];
/* returns one of the standard verdicts */
int (*target)(struct sk_buff **pskb, unsigned int hooknr,
int (*target)(struct sk_buff *skb, unsigned int hooknr,
const struct net_device *in, const struct net_device *out,
const void *targetdata, unsigned int datalen);
/* 0 == let it in */
@ -294,7 +294,7 @@ extern int ebt_register_watcher(struct ebt_watcher *watcher);
extern void ebt_unregister_watcher(struct ebt_watcher *watcher);
extern int ebt_register_target(struct ebt_target *target);
extern void ebt_unregister_target(struct ebt_target *target);
extern unsigned int ebt_do_table(unsigned int hook, struct sk_buff **pskb,
extern unsigned int ebt_do_table(unsigned int hook, struct sk_buff *skb,
const struct net_device *in, const struct net_device *out,
struct ebt_table *table);

4
include/linux/netfilter_ipv4.h
View File

@ -75,8 +75,8 @@ enum nf_ip_hook_priorities {
#define SO_ORIGINAL_DST 80
#ifdef __KERNEL__
extern int ip_route_me_harder(struct sk_buff **pskb, unsigned addr_type);
extern int ip_xfrm_me_harder(struct sk_buff **pskb);
extern int ip_route_me_harder(struct sk_buff *skb, unsigned addr_type);
extern int ip_xfrm_me_harder(struct sk_buff *skb);
extern __sum16 nf_ip_checksum(struct sk_buff *skb, unsigned int hook,
unsigned int dataoff, u_int8_t protocol);
#endif /*__KERNEL__*/

2
include/linux/netfilter_ipv4/ip_tables.h
View File

@ -337,7 +337,7 @@ struct ipt_error
.target.errorname = "ERROR", \
}
extern unsigned int ipt_do_table(struct sk_buff **pskb,
extern unsigned int ipt_do_table(struct sk_buff *skb,
unsigned int hook,
const struct net_device *in,
const struct net_device *out,

2
include/linux/netfilter_ipv6/ip6_tables.h
View File

@ -336,7 +336,7 @@ extern void ip6t_init(void) __init;
extern int ip6t_register_table(struct xt_table *table,
const struct ip6t_replace *repl);
extern void ip6t_unregister_table(struct xt_table *table);
extern unsigned int ip6t_do_table(struct sk_buff **pskb,
extern unsigned int ip6t_do_table(struct sk_buff *skb,
unsigned int hook,
const struct net_device *in,
const struct net_device *out,

1
include/linux/skbuff.h
View File

@ -357,6 +357,7 @@ static inline struct sk_buff *alloc_skb_fclone(unsigned int size,
}
extern void kfree_skbmem(struct sk_buff *skb);
extern struct sk_buff *skb_morph(struct sk_buff *dst, struct sk_buff *src);
extern struct sk_buff *skb_clone(struct sk_buff *skb,
gfp_t priority);
extern struct sk_buff *skb_copy(const struct sk_buff *skb,

2
include/linux/tcp.h
View File

@ -315,7 +315,7 @@ struct tcp_sock {
*/
u32 snd_ssthresh; /* Slow start size threshold */
u32 snd_cwnd; /* Sending congestion window */
u16 snd_cwnd_cnt; /* Linear increase counter */
u32 snd_cwnd_cnt; /* Linear increase counter */
u32 snd_cwnd_clamp; /* Do not allow snd_cwnd to grow above this */
u32 snd_cwnd_used;
u32 snd_cwnd_stamp;

60
include/net/inet_frag.h Normal file
View File

@ -0,0 +1,60 @@
#ifndef __NET_FRAG_H__
#define __NET_FRAG_H__
struct inet_frag_queue {
struct hlist_node list;
struct list_head lru_list; /* lru list member */
spinlock_t lock;
atomic_t refcnt;
struct timer_list timer; /* when will this queue expire? */
struct sk_buff *fragments; /* list of received fragments */
ktime_t stamp;
int len; /* total length of orig datagram */
int meat;
__u8 last_in; /* first/last segment arrived? */
#define COMPLETE 4
#define FIRST_IN 2
#define LAST_IN 1
};
#define INETFRAGS_HASHSZ 64
struct inet_frags_ctl {
int high_thresh;
int low_thresh;
int timeout;
int secret_interval;
};
struct inet_frags {
struct list_head lru_list;
struct hlist_head hash[INETFRAGS_HASHSZ];
rwlock_t lock;
u32 rnd;
int nqueues;
int qsize;
atomic_t mem;
struct timer_list secret_timer;
struct inet_frags_ctl *ctl;
unsigned int (*hashfn)(struct inet_frag_queue *);
void (*destructor)(struct inet_frag_queue *);
void (*skb_free)(struct sk_buff *);
};
void inet_frags_init(struct inet_frags *);
void inet_frags_fini(struct inet_frags *);
void inet_frag_kill(struct inet_frag_queue *q, struct inet_frags *f);
void inet_frag_destroy(struct inet_frag_queue *q,
struct inet_frags *f, int *work);
int inet_frag_evictor(struct inet_frags *f);
static inline void inet_frag_put(struct inet_frag_queue *q, struct inet_frags *f)
{
if (atomic_dec_and_test(&q->refcnt))
inet_frag_destroy(q, f, NULL);
}
#endif

13
include/net/ip.h
View File

@ -160,6 +160,7 @@ DECLARE_SNMP_STAT(struct ipstats_mib, ip_statistics);
#define IP_INC_STATS(field) SNMP_INC_STATS(ip_statistics, field)
#define IP_INC_STATS_BH(field) SNMP_INC_STATS_BH(ip_statistics, field)
#define IP_INC_STATS_USER(field) SNMP_INC_STATS_USER(ip_statistics, field)
#define IP_ADD_STATS_BH(field, val) SNMP_ADD_STATS_BH(ip_statistics, field, val)
DECLARE_SNMP_STAT(struct linux_mib, net_statistics);
#define NET_INC_STATS(field) SNMP_INC_STATS(net_statistics, field)
#define NET_INC_STATS_BH(field) SNMP_INC_STATS_BH(net_statistics, field)
@ -177,10 +178,8 @@ extern int sysctl_ip_default_ttl;
extern int sysctl_ip_nonlocal_bind;
/* From ip_fragment.c */
extern int sysctl_ipfrag_high_thresh;
extern int sysctl_ipfrag_low_thresh;
extern int sysctl_ipfrag_time;
extern int sysctl_ipfrag_secret_interval;
struct inet_frags_ctl;
extern struct inet_frags_ctl ip4_frags_ctl;
extern int sysctl_ipfrag_max_dist;
/* From inetpeer.c */
@ -332,9 +331,9 @@ enum ip_defrag_users
IP_DEFRAG_VS_FWD
};
struct sk_buff *ip_defrag(struct sk_buff *skb, u32 user);
extern int ip_frag_nqueues;
extern atomic_t ip_frag_mem;
int ip_defrag(struct sk_buff *skb, u32 user);
int ip_frag_mem(void);
int ip_frag_nqueues(void);
/*
* Functions provided by ip_forward.c

13
include/net/ip_vs.h
View File

@ -464,10 +464,10 @@ struct ip_vs_protocol {
unsigned int proto_off,
int inverse);
int (*snat_handler)(struct sk_buff **pskb,
int (*snat_handler)(struct sk_buff *skb,
struct ip_vs_protocol *pp, struct ip_vs_conn *cp);
int (*dnat_handler)(struct sk_buff **pskb,
int (*dnat_handler)(struct sk_buff *skb,
struct ip_vs_protocol *pp, struct ip_vs_conn *cp);
int (*csum_check)(struct sk_buff *skb, struct ip_vs_protocol *pp);
@ -654,11 +654,11 @@ struct ip_vs_app
/* output hook: return false if can't linearize. diff set for TCP. */
int (*pkt_out)(struct ip_vs_app *, struct ip_vs_conn *,
struct sk_buff **, int *diff);
struct sk_buff *, int *diff);
/* input hook: return false if can't linearize. diff set for TCP. */
int (*pkt_in)(struct ip_vs_app *, struct ip_vs_conn *,
struct sk_buff **, int *diff);
struct sk_buff *, int *diff);
/* ip_vs_app initializer */
int (*init_conn)(struct ip_vs_app *, struct ip_vs_conn *);
@ -832,8 +832,8 @@ register_ip_vs_app_inc(struct ip_vs_app *app, __u16 proto, __u16 port);
extern int ip_vs_app_inc_get(struct ip_vs_app *inc);
extern void ip_vs_app_inc_put(struct ip_vs_app *inc);
extern int ip_vs_app_pkt_out(struct ip_vs_conn *, struct sk_buff **pskb);
extern int ip_vs_app_pkt_in(struct ip_vs_conn *, struct sk_buff **pskb);
extern int ip_vs_app_pkt_out(struct ip_vs_conn *, struct sk_buff *skb);
extern int ip_vs_app_pkt_in(struct ip_vs_conn *, struct sk_buff *skb);
extern int ip_vs_skb_replace(struct sk_buff *skb, gfp_t pri,
char *o_buf, int o_len, char *n_buf, int n_len);
extern int ip_vs_app_init(void);
@ -984,7 +984,6 @@ static inline char ip_vs_fwd_tag(struct ip_vs_conn *cp)
return fwd;
}
extern int ip_vs_make_skb_writable(struct sk_buff **pskb, int len);
extern void ip_vs_nat_icmp(struct sk_buff *skb, struct ip_vs_protocol *pp,
struct ip_vs_conn *cp, int dir);

21
include/net/ipv6.h
View File

@ -120,12 +120,21 @@ extern int sysctl_mld_max_msf;
SNMP_INC_STATS##modifier(statname##_statistics, (field)); \
})
#define _DEVADD(statname, modifier, idev, field, val) \
({ \
struct inet6_dev *_idev = (idev); \
if (likely(_idev != NULL)) \
SNMP_ADD_STATS##modifier((_idev)->stats.statname, (field), (val)); \
SNMP_ADD_STATS##modifier(statname##_statistics, (field), (val));\
})
/* MIBs */
DECLARE_SNMP_STAT(struct ipstats_mib, ipv6_statistics);
#define IP6_INC_STATS(idev,field) _DEVINC(ipv6, , idev, field)
#define IP6_INC_STATS_BH(idev,field) _DEVINC(ipv6, _BH, idev, field)
#define IP6_INC_STATS_USER(idev,field) _DEVINC(ipv6, _USER, idev, field)
#define IP6_ADD_STATS_BH(idev,field,val) _DEVADD(ipv6, _BH, idev, field, val)
DECLARE_SNMP_STAT(struct icmpv6_mib, icmpv6_statistics);
DECLARE_SNMP_STAT(struct icmpv6msg_mib, icmpv6msg_statistics);
@ -240,7 +249,7 @@ extern int ip6_ra_control(struct sock *sk, int sel,
void (*destructor)(struct sock *));
extern int ipv6_parse_hopopts(struct sk_buff **skbp);
extern int ipv6_parse_hopopts(struct sk_buff *skb);
extern struct ipv6_txoptions * ipv6_dup_options(struct sock *sk, struct ipv6_txoptions *opt);
extern struct ipv6_txoptions * ipv6_renew_options(struct sock *sk, struct ipv6_txoptions *opt,
@ -252,8 +261,8 @@ struct ipv6_txoptions *ipv6_fixup_options(struct ipv6_txoptions *opt_space,
extern int ipv6_opt_accepted(struct sock *sk, struct sk_buff *skb);
extern int ip6_frag_nqueues;
extern atomic_t ip6_frag_mem;
int ip6_frag_nqueues(void);
int ip6_frag_mem(void);
#define IPV6_FRAG_TIMEOUT (60*HZ) /* 60 seconds */
@ -565,10 +574,8 @@ extern int inet6_hash_connect(struct inet_timewait_death_row *death_row,
/*
* reassembly.c
*/
extern int sysctl_ip6frag_high_thresh;
extern int sysctl_ip6frag_low_thresh;
extern int sysctl_ip6frag_time;
extern int sysctl_ip6frag_secret_interval;
struct inet_frags_ctl;
extern struct inet_frags_ctl ip6_frags_ctl;
extern const struct proto_ops inet6_stream_ops;
extern const struct proto_ops inet6_dgram_ops;

5
include/net/netfilter/ipv6/nf_conntrack_ipv6.h
View File

@ -15,8 +15,7 @@ extern void nf_ct_frag6_output(unsigned int hooknum, struct sk_buff *skb,
struct net_device *out,
int (*okfn)(struct sk_buff *));
extern unsigned int nf_ct_frag6_timeout;
extern unsigned int nf_ct_frag6_low_thresh;
extern unsigned int nf_ct_frag6_high_thresh;
struct inet_frags_ctl;
extern struct inet_frags_ctl nf_frags_ctl;
#endif /* _NF_CONNTRACK_IPV6_H*/

10
include/net/netfilter/nf_conntrack_core.h
View File

@ -22,7 +22,7 @@
of connection tracking. */
extern unsigned int nf_conntrack_in(int pf,
unsigned int hooknum,
struct sk_buff **pskb);
struct sk_buff *skb);
extern int nf_conntrack_init(void);
extern void nf_conntrack_cleanup(void);
@ -60,17 +60,17 @@ nf_ct_invert_tuple(struct nf_conntrack_tuple *inverse,
extern struct nf_conntrack_tuple_hash *
nf_conntrack_find_get(const struct nf_conntrack_tuple *tuple);
extern int __nf_conntrack_confirm(struct sk_buff **pskb);
extern int __nf_conntrack_confirm(struct sk_buff *skb);
/* Confirm a connection: returns NF_DROP if packet must be dropped. */
static inline int nf_conntrack_confirm(struct sk_buff **pskb)
static inline int nf_conntrack_confirm(struct sk_buff *skb)
{
struct nf_conn *ct = (struct nf_conn *)(*pskb)->nfct;
struct nf_conn *ct = (struct nf_conn *)skb->nfct;
int ret = NF_ACCEPT;
if (ct) {
if (!nf_ct_is_confirmed(ct) && !nf_ct_is_dying(ct))
ret = __nf_conntrack_confirm(pskb);
ret = __nf_conntrack_confirm(skb);
nf_ct_deliver_cached_events(ct);
}
return ret;

2
include/net/netfilter/nf_conntrack_helper.h
View File

@ -29,7 +29,7 @@ struct nf_conntrack_helper
/* Function to call when data passes; return verdict, or -1 to
invalidate. */
int (*help)(struct sk_buff **pskb,
int (*help)(struct sk_buff *skb,
unsigned int protoff,
struct nf_conn *ct,
enum ip_conntrack_info conntrackinfo);

4
include/net/netfilter/nf_nat_core.h
View File

@ -10,12 +10,12 @@
extern unsigned int nf_nat_packet(struct nf_conn *ct,
enum ip_conntrack_info ctinfo,
unsigned int hooknum,
struct sk_buff **pskb);
struct sk_buff *skb);
extern int nf_nat_icmp_reply_translation(struct nf_conn *ct,
enum ip_conntrack_info ctinfo,
unsigned int hooknum,
struct sk_buff **pskb);
struct sk_buff *skb);
static inline int nf_nat_initialized(struct nf_conn *ct,
enum nf_nat_manip_type manip)

6
include/net/netfilter/nf_nat_helper.h
View File

@ -7,21 +7,21 @@
struct sk_buff;
/* These return true or false. */
extern int nf_nat_mangle_tcp_packet(struct sk_buff **skb,
extern int nf_nat_mangle_tcp_packet(struct sk_buff *skb,
struct nf_conn *ct,
enum ip_conntrack_info ctinfo,
unsigned int match_offset,
unsigned int match_len,
const char *rep_buffer,
unsigned int rep_len);
extern int nf_nat_mangle_udp_packet(struct sk_buff **skb,
extern int nf_nat_mangle_udp_packet(struct sk_buff *skb,
struct nf_conn *ct,
enum ip_conntrack_info ctinfo,
unsigned int match_offset,
unsigned int match_len,
const char *rep_buffer,
unsigned int rep_len);
extern int nf_nat_seq_adjust(struct sk_buff **pskb,
extern int nf_nat_seq_adjust(struct sk_buff *skb,
struct nf_conn *ct,
enum ip_conntrack_info ctinfo);

2
include/net/netfilter/nf_nat_protocol.h
View File

@ -18,7 +18,7 @@ struct nf_nat_protocol
/* Translate a packet to the target according to manip type.
Return true if succeeded. */
int (*manip_pkt)(struct sk_buff **pskb,
int (*manip_pkt)(struct sk_buff *skb,
unsigned int iphdroff,
const struct nf_conntrack_tuple *tuple,
enum nf_nat_manip_type maniptype);

2
include/net/netfilter/nf_nat_rule.h
View File

@ -6,7 +6,7 @@
extern int nf_nat_rule_init(void) __init;
extern void nf_nat_rule_cleanup(void);
extern int nf_nat_rule_find(struct sk_buff **pskb,
extern int nf_nat_rule_find(struct sk_buff *skb,
unsigned int hooknum,
const struct net_device *in,
const struct net_device *out,

2
include/net/protocol.h
View File

@ -45,7 +45,7 @@ struct net_protocol {
#if defined(CONFIG_IPV6) || defined (CONFIG_IPV6_MODULE)
struct inet6_protocol
{
int (*handler)(struct sk_buff **skb);
int (*handler)(struct sk_buff *skb);
void (*err_handler)(struct sk_buff *skb,
struct inet6_skb_parm *opt,

2
include/net/xfrm.h
View File

@ -1051,7 +1051,7 @@ extern int xfrm4_output(struct sk_buff *skb);
extern int xfrm4_tunnel_register(struct xfrm_tunnel *handler, unsigned short family);
extern int xfrm4_tunnel_deregister(struct xfrm_tunnel *handler, unsigned short family);
extern int xfrm6_rcv_spi(struct sk_buff *skb, __be32 spi);
extern int xfrm6_rcv(struct sk_buff **pskb);
extern int xfrm6_rcv(struct sk_buff *skb);
extern int xfrm6_input_addr(struct sk_buff *skb, xfrm_address_t *daddr,
xfrm_address_t *saddr, u8 proto);
extern int xfrm6_tunnel_register(struct xfrm6_tunnel *handler, unsigned short family);

2
net/bridge/br.c
View File

@ -23,7 +23,7 @@
#include "br_private.h"
int (*br_should_route_hook) (struct sk_buff **pskb) = NULL;
int (*br_should_route_hook)(struct sk_buff *skb);
static struct llc_sap *br_stp_sap;

6
net/bridge/br_input.c
View File

@ -126,6 +126,10 @@ struct sk_buff *br_handle_frame(struct net_bridge_port *p, struct sk_buff *skb)
if (!is_valid_ether_addr(eth_hdr(skb)->h_source))
goto drop;
skb = skb_share_check(skb, GFP_ATOMIC);
if (!skb)
return NULL;
if (unlikely(is_link_local(dest))) {
/* Pause frames shouldn't be passed up by driver anyway */
if (skb->protocol == htons(ETH_P_PAUSE))
@ -145,7 +149,7 @@ struct sk_buff *br_handle_frame(struct net_bridge_port *p, struct sk_buff *skb)
case BR_STATE_FORWARDING:
if (br_should_route_hook) {
if (br_should_route_hook(&skb))
if (br_should_route_hook(skb))
return skb;
dest = eth_hdr(skb)->h_dest;
}

36
net/bridge/br_netfilter.c
View File

@ -503,18 +503,14 @@ inhdr_error:
* receiving device) to make netfilter happy, the REDIRECT
* target in particular. Save the original destination IP
* address to be able to detect DNAT afterwards. */
static unsigned int br_nf_pre_routing(unsigned int hook, struct sk_buff **pskb,
static unsigned int br_nf_pre_routing(unsigned int hook, struct sk_buff *skb,
const struct net_device *in,
const struct net_device *out,
int (*okfn)(struct sk_buff *))
{
struct iphdr *iph;
struct sk_buff *skb = *pskb;
__u32 len = nf_bridge_encap_header_len(skb);
if ((skb = skb_share_check(skb, GFP_ATOMIC)) == NULL)
return NF_STOLEN;
if (unlikely(!pskb_may_pull(skb, len)))
goto out;
@ -584,13 +580,11 @@ out:
* took place when the packet entered the bridge), but we
* register an IPv4 PRE_ROUTING 'sabotage' hook that will
* prevent this from happening. */
static unsigned int br_nf_local_in(unsigned int hook, struct sk_buff **pskb,
static unsigned int br_nf_local_in(unsigned int hook, struct sk_buff *skb,
const struct net_device *in,
const struct net_device *out,
int (*okfn)(struct sk_buff *))
{
struct sk_buff *skb = *pskb;
if (skb->dst == (struct dst_entry *)&__fake_rtable) {
dst_release(skb->dst);
skb->dst = NULL;
@ -625,12 +619,11 @@ static int br_nf_forward_finish(struct sk_buff *skb)
* but we are still able to filter on the 'real' indev/outdev
* because of the physdev module. For ARP, indev and outdev are the
* bridge ports. */
static unsigned int br_nf_forward_ip(unsigned int hook, struct sk_buff **pskb,
static unsigned int br_nf_forward_ip(unsigned int hook, struct sk_buff *skb,
const struct net_device *in,
const struct net_device *out,
int (*okfn)(struct sk_buff *))
{
struct sk_buff *skb = *pskb;
struct nf_bridge_info *nf_bridge;
struct net_device *parent;
int pf;
@ -648,7 +641,7 @@ static unsigned int br_nf_forward_ip(unsigned int hook, struct sk_buff **pskb,
else
pf = PF_INET6;
nf_bridge_pull_encap_header(*pskb);
nf_bridge_pull_encap_header(skb);
nf_bridge = skb->nf_bridge;
if (skb->pkt_type == PACKET_OTHERHOST) {
@ -666,12 +659,11 @@ static unsigned int br_nf_forward_ip(unsigned int hook, struct sk_buff **pskb,
return NF_STOLEN;
}
static unsigned int br_nf_forward_arp(unsigned int hook, struct sk_buff **pskb,
static unsigned int br_nf_forward_arp(unsigned int hook, struct sk_buff *skb,
const struct net_device *in,
const struct net_device *out,
int (*okfn)(struct sk_buff *))
{
struct sk_buff *skb = *pskb;
struct net_device **d = (struct net_device **)(skb->cb);
#ifdef CONFIG_SYSCTL
@ -682,12 +674,12 @@ static unsigned int br_nf_forward_arp(unsigned int hook, struct sk_buff **pskb,
if (skb->protocol != htons(ETH_P_ARP)) {
if (!IS_VLAN_ARP(skb))
return NF_ACCEPT;
nf_bridge_pull_encap_header(*pskb);
nf_bridge_pull_encap_header(skb);
}
if (arp_hdr(skb)->ar_pln != 4) {
if (IS_VLAN_ARP(skb))
nf_bridge_push_encap_header(*pskb);
nf_bridge_push_encap_header(skb);
return NF_ACCEPT;
}
*d = (struct net_device *)in;
@ -709,13 +701,12 @@ static unsigned int br_nf_forward_arp(unsigned int hook, struct sk_buff **pskb,
* NF_BR_PRI_FIRST, so no relevant PF_BRIDGE/INPUT functions have been nor
* will be executed.
*/
static unsigned int br_nf_local_out(unsigned int hook, struct sk_buff **pskb,
static unsigned int br_nf_local_out(unsigned int hook, struct sk_buff *skb,
const struct net_device *in,
const struct net_device *out,
int (*okfn)(struct sk_buff *))
{
struct net_device *realindev;
struct sk_buff *skb = *pskb;
struct nf_bridge_info *nf_bridge;
if (!skb->nf_bridge)
@ -752,13 +743,12 @@ static int br_nf_dev_queue_xmit(struct sk_buff *skb)
}
/* PF_BRIDGE/POST_ROUTING ********************************************/
static unsigned int br_nf_post_routing(unsigned int hook, struct sk_buff **pskb,
static unsigned int br_nf_post_routing(unsigned int hook, struct sk_buff *skb,
const struct net_device *in,
const struct net_device *out,
int (*okfn)(struct sk_buff *))
{
struct sk_buff *skb = *pskb;
struct nf_bridge_info *nf_bridge = (*pskb)->nf_bridge;
struct nf_bridge_info *nf_bridge = skb->nf_bridge;
struct net_device *realoutdev = bridge_parent(skb->dev);
int pf;
@ -828,13 +818,13 @@ print_error:
/* IP/SABOTAGE *****************************************************/
/* Don't hand locally destined packets to PF_INET(6)/PRE_ROUTING
* for the second time. */
static unsigned int ip_sabotage_in(unsigned int hook, struct sk_buff **pskb,
static unsigned int ip_sabotage_in(unsigned int hook, struct sk_buff *skb,
const struct net_device *in,
const struct net_device *out,
int (*okfn)(struct sk_buff *))
{
if ((*pskb)->nf_bridge &&
!((*pskb)->nf_bridge->mask & BRNF_NF_BRIDGE_PREROUTING)) {
if (skb->nf_bridge &&
!(skb->nf_bridge->mask & BRNF_NF_BRIDGE_PREROUTING)) {
return NF_STOP;
}

3
net/bridge/netfilter/ebt_arpreply.c
View File

@ -15,7 +15,7 @@
#include <net/arp.h>
#include <linux/module.h>
static int ebt_target_reply(struct sk_buff **pskb, unsigned int hooknr,
static int ebt_target_reply(struct sk_buff *skb, unsigned int hooknr,
const struct net_device *in, const struct net_device *out,
const void *data, unsigned int datalen)
{
@ -23,7 +23,6 @@ static int ebt_target_reply(struct sk_buff **pskb, unsigned int hooknr,
__be32 _sip, *siptr, _dip, *diptr;
struct arphdr _ah, *ap;
unsigned char _sha[ETH_ALEN], *shp;
struct sk_buff *skb = *pskb;
ap = skb_header_pointer(skb, 0, sizeof(_ah), &_ah);
if (ap == NULL)

17
net/bridge/netfilter/ebt_dnat.c
View File

@ -8,29 +8,22 @@
*
*/
#include <linux/netfilter.h>
#include <linux/netfilter_bridge/ebtables.h>
#include <linux/netfilter_bridge/ebt_nat.h>
#include <linux/module.h>
#include <net/sock.h>
static int ebt_target_dnat(struct sk_buff **pskb, unsigned int hooknr,
static int ebt_target_dnat(struct sk_buff *skb, unsigned int hooknr,
const struct net_device *in, const struct net_device *out,
const void *data, unsigned int datalen)
{
struct ebt_nat_info *info = (struct ebt_nat_info *)data;
if (skb_shared(*pskb) || skb_cloned(*pskb)) {
struct sk_buff *nskb;
if (skb_make_writable(skb, 0))
return NF_DROP;
nskb = skb_copy(*pskb, GFP_ATOMIC);
if (!nskb)
return NF_DROP;
if ((*pskb)->sk)
skb_set_owner_w(nskb, (*pskb)->sk);
kfree_skb(*pskb);
*pskb = nskb;
}
memcpy(eth_hdr(*pskb)->h_dest, info->mac, ETH_ALEN);
memcpy(eth_hdr(skb)->h_dest, info->mac, ETH_ALEN);
return info->target;
}

10
net/bridge/netfilter/ebt_mark.c
View File

@ -17,7 +17,7 @@
#include <linux/netfilter_bridge/ebt_mark_t.h>
#include <linux/module.h>
static int ebt_target_mark(struct sk_buff **pskb, unsigned int hooknr,
static int ebt_target_mark(struct sk_buff *skb, unsigned int hooknr,
const struct net_device *in, const struct net_device *out,
const void *data, unsigned int datalen)
{
@ -25,13 +25,13 @@ static int ebt_target_mark(struct sk_buff **pskb, unsigned int hooknr,
int action = info->target & -16;
if (action == MARK_SET_VALUE)
(*pskb)->mark = info->mark;
skb->mark = info->mark;
else if (action == MARK_OR_VALUE)
(*pskb)->mark |= info->mark;
skb->mark |= info->mark;
else if (action == MARK_AND_VALUE)
(*pskb)->mark &= info->mark;
skb->mark &= info->mark;
else
(*pskb)->mark ^= info->mark;
skb->mark ^= info->mark;
return info->target | ~EBT_VERDICT_BITS;
}

21
net/bridge/netfilter/ebt_redirect.c
View File

@ -8,35 +8,28 @@
*
*/
#include <linux/netfilter.h>
#include <linux/netfilter_bridge/ebtables.h>
#include <linux/netfilter_bridge/ebt_redirect.h>
#include <linux/module.h>
#include <net/sock.h>
#include "../br_private.h"
static int ebt_target_redirect(struct sk_buff **pskb, unsigned int hooknr,
static int ebt_target_redirect(struct sk_buff *skb, unsigned int hooknr,
const struct net_device *in, const struct net_device *out,
const void *data, unsigned int datalen)
{
struct ebt_redirect_info *info = (struct ebt_redirect_info *)data;
if (skb_shared(*pskb) || skb_cloned(*pskb)) {
struct sk_buff *nskb;
if (skb_make_writable(skb, 0))
return NF_DROP;
nskb = skb_copy(*pskb, GFP_ATOMIC);
if (!nskb)
return NF_DROP;
if ((*pskb)->sk)
skb_set_owner_w(nskb, (*pskb)->sk);
kfree_skb(*pskb);
*pskb = nskb;
}
if (hooknr != NF_BR_BROUTING)
memcpy(eth_hdr(*pskb)->h_dest,
memcpy(eth_hdr(skb)->h_dest,
in->br_port->br->dev->dev_addr, ETH_ALEN);
else
memcpy(eth_hdr(*pskb)->h_dest, in->dev_addr, ETH_ALEN);
(*pskb)->pkt_type = PACKET_HOST;
memcpy(eth_hdr(skb)->h_dest, in->dev_addr, ETH_ALEN);
skb->pkt_type = PACKET_HOST;
return info->target;
}

23
net/bridge/netfilter/ebt_snat.c
View File

@ -8,6 +8,7 @@
*
*/
#include <linux/netfilter.h>
#include <linux/netfilter_bridge/ebtables.h>
#include <linux/netfilter_bridge/ebt_nat.h>
#include <linux/module.h>
@ -15,34 +16,26 @@
#include <linux/if_arp.h>
#include <net/arp.h>
static int ebt_target_snat(struct sk_buff **pskb, unsigned int hooknr,
static int ebt_target_snat(struct sk_buff *skb, unsigned int hooknr,
const struct net_device *in, const struct net_device *out,
const void *data, unsigned int datalen)
{
struct ebt_nat_info *info = (struct ebt_nat_info *) data;
if (skb_shared(*pskb) || skb_cloned(*pskb)) {
struct sk_buff *nskb;
if (skb_make_writable(skb, 0))
return NF_DROP;
nskb = skb_copy(*pskb, GFP_ATOMIC);
if (!nskb)
return NF_DROP;
if ((*pskb)->sk)
skb_set_owner_w(nskb, (*pskb)->sk);
kfree_skb(*pskb);
*pskb = nskb;
}
memcpy(eth_hdr(*pskb)->h_source, info->mac, ETH_ALEN);
memcpy(eth_hdr(skb)->h_source, info->mac, ETH_ALEN);
if (!(info->target & NAT_ARP_BIT) &&
eth_hdr(*pskb)->h_proto == htons(ETH_P_ARP)) {
eth_hdr(skb)->h_proto == htons(ETH_P_ARP)) {
struct arphdr _ah, *ap;
ap = skb_header_pointer(*pskb, 0, sizeof(_ah), &_ah);
ap = skb_header_pointer(skb, 0, sizeof(_ah), &_ah);
if (ap == NULL)
return EBT_DROP;
if (ap->ar_hln != ETH_ALEN)
goto out;
if (skb_store_bits(*pskb, sizeof(_ah), info->mac,ETH_ALEN))
if (skb_store_bits(skb, sizeof(_ah), info->mac,ETH_ALEN))
return EBT_DROP;
}
out:

4
net/bridge/netfilter/ebtable_broute.c
View File

@ -51,11 +51,11 @@ static struct ebt_table broute_table =
.me = THIS_MODULE,
};
static int ebt_broute(struct sk_buff **pskb)
static int ebt_broute(struct sk_buff *skb)
{
int ret;
ret = ebt_do_table(NF_BR_BROUTING, pskb, (*pskb)->dev, NULL,
ret = ebt_do_table(NF_BR_BROUTING, skb, skb->dev, NULL,
&broute_table);
if (ret == NF_DROP)
return 1; /* route it */

4
net/bridge/netfilter/ebtable_filter.c
View File

@ -61,10 +61,10 @@ static struct ebt_table frame_filter =
};
static unsigned int
ebt_hook (unsigned int hook, struct sk_buff **pskb, const struct net_device *in,
ebt_hook(unsigned int hook, struct sk_buff *skb, const struct net_device *in,
const struct net_device *out, int (*okfn)(struct sk_buff *))
{
return ebt_do_table(hook, pskb, in, out, &frame_filter);
return ebt_do_table(hook, skb, in, out, &frame_filter);
}
static struct nf_hook_ops ebt_ops_filter[] = {

8
net/bridge/netfilter/ebtable_nat.c
View File

@ -61,17 +61,17 @@ static struct ebt_table frame_nat =
};
static unsigned int
ebt_nat_dst(unsigned int hook, struct sk_buff **pskb, const struct net_device *in
ebt_nat_dst(unsigned int hook, struct sk_buff *skb, const struct net_device *in
, const struct net_device *out, int (*okfn)(struct sk_buff *))
{
return ebt_do_table(hook, pskb, in, out, &frame_nat);
return ebt_do_table(hook, skb, in, out, &frame_nat);
}
static unsigned int
ebt_nat_src(unsigned int hook, struct sk_buff **pskb, const struct net_device *in
ebt_nat_src(unsigned int hook, struct sk_buff *skb, const struct net_device *in
, const struct net_device *out, int (*okfn)(struct sk_buff *))
{
return ebt_do_table(hook, pskb, in, out, &frame_nat);
return ebt_do_table(hook, skb, in, out, &frame_nat);
}
static struct nf_hook_ops ebt_ops_nat[] = {

12
net/bridge/netfilter/ebtables.c
View File

@ -142,7 +142,7 @@ static inline int ebt_basic_match(struct ebt_entry *e, struct ethhdr *h,
}
/* Do some firewalling */
unsigned int ebt_do_table (unsigned int hook, struct sk_buff **pskb,
unsigned int ebt_do_table (unsigned int hook, struct sk_buff *skb,
const struct net_device *in, const struct net_device *out,
struct ebt_table *table)
{
@ -172,19 +172,19 @@ unsigned int ebt_do_table (unsigned int hook, struct sk_buff **pskb,
base = private->entries;
i = 0;
while (i < nentries) {
if (ebt_basic_match(point, eth_hdr(*pskb), in, out))
if (ebt_basic_match(point, eth_hdr(skb), in, out))
goto letscontinue;
if (EBT_MATCH_ITERATE(point, ebt_do_match, *pskb, in, out) != 0)
if (EBT_MATCH_ITERATE(point, ebt_do_match, skb, in, out) != 0)
goto letscontinue;
/* increase counter */
(*(counter_base + i)).pcnt++;
(*(counter_base + i)).bcnt+=(**pskb).len;
(*(counter_base + i)).bcnt += skb->len;
/* these should only watch: not modify, nor tell us
what to do with the packet */
EBT_WATCHER_ITERATE(point, ebt_do_watcher, *pskb, hook, in,
EBT_WATCHER_ITERATE(point, ebt_do_watcher, skb, hook, in,
out);
t = (struct ebt_entry_target *)
@ -193,7 +193,7 @@ unsigned int ebt_do_table (unsigned int hook, struct sk_buff **pskb,
if (!t->u.target->target)
verdict = ((struct ebt_standard_target *)t)->verdict;
else
verdict = t->u.target->target(pskb, hook,
verdict = t->u.target->target(skb, hook,
in, out, t->data, t->target_size);
if (verdict == EBT_ACCEPT) {
read_unlock_bh(&table->lock);

95
net/core/dev.c
View File

@ -1362,22 +1362,21 @@ int skb_checksum_help(struct sk_buff *skb)
goto out_set_summed;
}
if (skb_cloned(skb)) {
offset = skb->csum_start - skb_headroom(skb);
BUG_ON(offset >= skb_headlen(skb));
csum = skb_checksum(skb, offset, skb->len - offset, 0);
offset += skb->csum_offset;
BUG_ON(offset + sizeof(__sum16) > skb_headlen(skb));
if (skb_cloned(skb) &&
!skb_clone_writable(skb, offset + sizeof(__sum16))) {
ret = pskb_expand_head(skb, 0, 0, GFP_ATOMIC);
if (ret)
goto out;
}
offset = skb->csum_start - skb_headroom(skb);
BUG_ON(offset > (int)skb->len);
csum = skb_checksum(skb, offset, skb->len-offset, 0);
offset = skb_headlen(skb) - offset;
BUG_ON(offset <= 0);
BUG_ON(skb->csum_offset + 2 > offset);
*(__sum16 *)(skb->head + skb->csum_start + skb->csum_offset) =
csum_fold(csum);
*(__sum16 *)(skb->data + offset) = csum_fold(csum);
out_set_summed:
skb->ip_summed = CHECKSUM_NONE;
out:
@ -1949,28 +1948,52 @@ static int ing_filter(struct sk_buff *skb)
struct Qdisc *q;
struct net_device *dev = skb->dev;
int result = TC_ACT_OK;
u32 ttl = G_TC_RTTL(skb->tc_verd);
if (dev->qdisc_ingress) {
__u32 ttl = (__u32) G_TC_RTTL(skb->tc_verd);
if (MAX_RED_LOOP < ttl++) {
printk(KERN_WARNING "Redir loop detected Dropping packet (%d->%d)\n",
skb->iif, skb->dev->ifindex);
return TC_ACT_SHOT;
}
skb->tc_verd = SET_TC_RTTL(skb->tc_verd,ttl);
skb->tc_verd = SET_TC_AT(skb->tc_verd,AT_INGRESS);
spin_lock(&dev->ingress_lock);
if ((q = dev->qdisc_ingress) != NULL)
result = q->enqueue(skb, q);
spin_unlock(&dev->ingress_lock);
if (MAX_RED_LOOP < ttl++) {
printk(KERN_WARNING
"Redir loop detected Dropping packet (%d->%d)\n",
skb->iif, dev->ifindex);
return TC_ACT_SHOT;
}
skb->tc_verd = SET_TC_RTTL(skb->tc_verd, ttl);
skb->tc_verd = SET_TC_AT(skb->tc_verd, AT_INGRESS);
spin_lock(&dev->ingress_lock);
if ((q = dev->qdisc_ingress) != NULL)
result = q->enqueue(skb, q);
spin_unlock(&dev->ingress_lock);
return result;
}
static inline struct sk_buff *handle_ing(struct sk_buff *skb,
struct packet_type **pt_prev,
int *ret, struct net_device *orig_dev)
{
if (!skb->dev->qdisc_ingress)
goto out;
if (*pt_prev) {
*ret = deliver_skb(skb, *pt_prev, orig_dev);
*pt_prev = NULL;
} else {
/* Huh? Why does turning on AF_PACKET affect this? */
skb->tc_verd = SET_TC_OK2MUNGE(skb->tc_verd);
}
switch (ing_filter(skb)) {
case TC_ACT_SHOT:
case TC_ACT_STOLEN:
kfree_skb(skb);
return NULL;
}
out:
skb->tc_verd = 0;
return skb;
}
#endif
int netif_receive_skb(struct sk_buff *skb)
@ -2021,21 +2044,9 @@ int netif_receive_skb(struct sk_buff *skb)
}
#ifdef CONFIG_NET_CLS_ACT
if (pt_prev) {
ret = deliver_skb(skb, pt_prev, orig_dev);
pt_prev = NULL; /* noone else should process this after*/
} else {
skb->tc_verd = SET_TC_OK2MUNGE(skb->tc_verd);
}
ret = ing_filter(skb);
if (ret == TC_ACT_SHOT || (ret == TC_ACT_STOLEN)) {
kfree_skb(skb);
skb = handle_ing(skb, &pt_prev, &ret, orig_dev);
if (!skb)
goto out;
}
skb->tc_verd = 0;
ncls:
#endif

2
net/core/neighbour.c
View File

@ -481,6 +481,8 @@ struct pneigh_entry * pneigh_lookup(struct neigh_table *tbl, const void *pkey,
if (!creat)
goto out;
ASSERT_RTNL();
n = kmalloc(sizeof(*n) + key_len, GFP_KERNEL);
if (!n)
goto out;

195
net/core/skbuff.c
View File

@ -362,6 +362,97 @@ void kfree_skb(struct sk_buff *skb)
__kfree_skb(skb);
}
static void __copy_skb_header(struct sk_buff *new, const struct sk_buff *old)
{
new->tstamp = old->tstamp;
new->dev = old->dev;
new->transport_header = old->transport_header;
new->network_header = old->network_header;
new->mac_header = old->mac_header;
new->dst = dst_clone(old->dst);
#ifdef CONFIG_INET
new->sp = secpath_get(old->sp);
#endif
memcpy(new->cb, old->cb, sizeof(old->cb));
new->csum_start = old->csum_start;
new->csum_offset = old->csum_offset;
new->local_df = old->local_df;
new->pkt_type = old->pkt_type;
new->ip_summed = old->ip_summed;
skb_copy_queue_mapping(new, old);
new->priority = old->priority;
#if defined(CONFIG_IP_VS) || defined(CONFIG_IP_VS_MODULE)
new->ipvs_property = old->ipvs_property;
#endif
new->protocol = old->protocol;
new->mark = old->mark;
__nf_copy(new, old);
#if defined(CONFIG_NETFILTER_XT_TARGET_TRACE) || \
defined(CONFIG_NETFILTER_XT_TARGET_TRACE_MODULE)
new->nf_trace = old->nf_trace;
#endif
#ifdef CONFIG_NET_SCHED
new->tc_index = old->tc_index;
#ifdef CONFIG_NET_CLS_ACT
new->tc_verd = old->tc_verd;
#endif
#endif
skb_copy_secmark(new, old);
}
static struct sk_buff *__skb_clone(struct sk_buff *n, struct sk_buff *skb)
{
#define C(x) n->x = skb->x
n->next = n->prev = NULL;
n->sk = NULL;
__copy_skb_header(n, skb);
C(len);
C(data_len);
C(mac_len);
n->cloned = 1;
n->hdr_len = skb->nohdr ? skb_headroom(skb) : skb->hdr_len;
n->nohdr = 0;
n->destructor = NULL;
#ifdef CONFIG_NET_CLS_ACT
/* FIXME What is this and why don't we do it in copy_skb_header? */
n->tc_verd = SET_TC_VERD(n->tc_verd,0);
n->tc_verd = CLR_TC_OK2MUNGE(n->tc_verd);
n->tc_verd = CLR_TC_MUNGED(n->tc_verd);
C(iif);
#endif
C(truesize);
atomic_set(&n->users, 1);
C(head);
C(data);
C(tail);
C(end);
atomic_inc(&(skb_shinfo(skb)->dataref));
skb->cloned = 1;
return n;
#undef C
}
/**
* skb_morph - morph one skb into another
* @dst: the skb to receive the contents
* @src: the skb to supply the contents
*
* This is identical to skb_clone except that the target skb is
* supplied by the user.
*
* The target skb is returned upon exit.
*/
struct sk_buff *skb_morph(struct sk_buff *dst, struct sk_buff *src)
{
skb_release_data(dst);
return __skb_clone(dst, src);
}
EXPORT_SYMBOL_GPL(skb_morph);
/**
* skb_clone - duplicate an sk_buff
* @skb: buffer to clone
@ -393,66 +484,7 @@ struct sk_buff *skb_clone(struct sk_buff *skb, gfp_t gfp_mask)
n->fclone = SKB_FCLONE_UNAVAILABLE;
}
#define C(x) n->x = skb->x
n->next = n->prev = NULL;
n->sk = NULL;
C(tstamp);
C(dev);
C(transport_header);
C(network_header);
C(mac_header);
C(dst);
dst_clone(skb->dst);
C(sp);
#ifdef CONFIG_INET
secpath_get(skb->sp);
#endif
memcpy(n->cb, skb->cb, sizeof(skb->cb));
C(len);
C(data_len);
C(mac_len);
C(csum);
C(local_df);
n->cloned = 1;
n->hdr_len = skb->nohdr ? skb_headroom(skb) : skb->hdr_len;
n->nohdr = 0;
C(pkt_type);
C(ip_summed);
skb_copy_queue_mapping(n, skb);
C(priority);
#if defined(CONFIG_IP_VS) || defined(CONFIG_IP_VS_MODULE)
C(ipvs_property);
#endif
C(protocol);
n->destructor = NULL;
C(mark);
__nf_copy(n, skb);
#if defined(CONFIG_NETFILTER_XT_TARGET_TRACE) || \
defined(CONFIG_NETFILTER_XT_TARGET_TRACE_MODULE)
C(nf_trace);
#endif
#ifdef CONFIG_NET_SCHED
C(tc_index);
#ifdef CONFIG_NET_CLS_ACT
n->tc_verd = SET_TC_VERD(skb->tc_verd,0);
n->tc_verd = CLR_TC_OK2MUNGE(n->tc_verd);
n->tc_verd = CLR_TC_MUNGED(n->tc_verd);
C(iif);
#endif
#endif
skb_copy_secmark(n, skb);
C(truesize);
atomic_set(&n->users, 1);
C(head);
C(data);
C(tail);
C(end);
atomic_inc(&(skb_shinfo(skb)->dataref));
skb->cloned = 1;
return n;
return __skb_clone(n, skb);
}
static void copy_skb_header(struct sk_buff *new, const struct sk_buff *old)
@ -463,50 +495,15 @@ static void copy_skb_header(struct sk_buff *new, const struct sk_buff *old)
*/
unsigned long offset = new->data - old->data;
#endif
new->sk = NULL;
new->dev = old->dev;
skb_copy_queue_mapping(new, old);
new->priority = old->priority;
new->protocol = old->protocol;
new->dst = dst_clone(old->dst);
#ifdef CONFIG_INET
new->sp = secpath_get(old->sp);
#endif
new->csum_start = old->csum_start;
new->csum_offset = old->csum_offset;
new->ip_summed = old->ip_summed;
new->transport_header = old->transport_header;
new->network_header = old->network_header;
new->mac_header = old->mac_header;
__copy_skb_header(new, old);
#ifndef NET_SKBUFF_DATA_USES_OFFSET
/* {transport,network,mac}_header are relative to skb->head */
new->transport_header += offset;
new->network_header += offset;
new->mac_header += offset;
#endif
memcpy(new->cb, old->cb, sizeof(old->cb));
new->local_df = old->local_df;
new->fclone = SKB_FCLONE_UNAVAILABLE;
new->pkt_type = old->pkt_type;
new->tstamp = old->tstamp;
new->destructor = NULL;
new->mark = old->mark;
__nf_copy(new, old);
#if defined(CONFIG_NETFILTER_XT_TARGET_TRACE) || \
defined(CONFIG_NETFILTER_XT_TARGET_TRACE_MODULE)
new->nf_trace = old->nf_trace;
#endif
#if defined(CONFIG_IP_VS) || defined(CONFIG_IP_VS_MODULE)
new->ipvs_property = old->ipvs_property;
#endif
#ifdef CONFIG_NET_SCHED
#ifdef CONFIG_NET_CLS_ACT
new->tc_verd = old->tc_verd;
#endif
new->tc_index = old->tc_index;
#endif
skb_copy_secmark(new, old);
atomic_set(&new->users, 1);
skb_shinfo(new)->gso_size = skb_shinfo(old)->gso_size;
skb_shinfo(new)->gso_segs = skb_shinfo(old)->gso_segs;
skb_shinfo(new)->gso_type = skb_shinfo(old)->gso_type;
@ -685,7 +682,7 @@ int pskb_expand_head(struct sk_buff *skb, int nhead, int ntail,
skb->transport_header += off;
skb->network_header += off;
skb->mac_header += off;
skb->csum_start += off;
skb->csum_start += nhead;
skb->cloned = 0;
skb->hdr_len = 0;
skb->nohdr = 0;

3
net/dccp/ipv6.c
View File

@ -767,10 +767,9 @@ discard:
return 0;
}
static int dccp_v6_rcv(struct sk_buff **pskb)
static int dccp_v6_rcv(struct sk_buff *skb)
{
const struct dccp_hdr *dh;
struct sk_buff *skb = *pskb;
struct sock *sk;
int min_cov;

4
net/decnet/netfilter/dn_rtmsg.c
View File

@ -88,12 +88,12 @@ static void dnrmg_send_peer(struct sk_buff *skb)
static unsigned int dnrmg_hook(unsigned int hook,
struct sk_buff **pskb,
struct sk_buff *skb,
const struct net_device *in,
const struct net_device *out,
int (*okfn)(struct sk_buff *))
{
dnrmg_send_peer(*pskb);
dnrmg_send_peer(skb);
return NF_ACCEPT;
}

3
net/ipv4/Makefile
View File

@ -10,7 +10,8 @@ obj-y := route.o inetpeer.o protocol.o \
tcp_minisocks.o tcp_cong.o \
datagram.o raw.o udp.o udplite.o \
arp.o icmp.o devinet.o af_inet.o igmp.o \
sysctl_net_ipv4.o fib_frontend.o fib_semantics.o
sysctl_net_ipv4.o fib_frontend.o fib_semantics.o \
inet_fragment.o
obj-$(CONFIG_IP_FIB_HASH) += fib_hash.o
obj-$(CONFIG_IP_FIB_TRIE) += fib_trie.o

174
net/ipv4/inet_fragment.c Normal file
View File

@ -0,0 +1,174 @@
/*
* inet fragments management
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*
* Authors: Pavel Emelyanov <xemul@openvz.org>
* Started as consolidation of ipv4/ip_fragment.c,
* ipv6/reassembly. and ipv6 nf conntrack reassembly
*/
#include <linux/list.h>
#include <linux/spinlock.h>
#include <linux/module.h>
#include <linux/timer.h>
#include <linux/mm.h>
#include <linux/random.h>
#include <linux/skbuff.h>
#include <linux/rtnetlink.h>
#include <net/inet_frag.h>
static void inet_frag_secret_rebuild(unsigned long dummy)
{
struct inet_frags *f = (struct inet_frags *)dummy;
unsigned long now = jiffies;
int i;
write_lock(&f->lock);
get_random_bytes(&f->rnd, sizeof(u32));
for (i = 0; i < INETFRAGS_HASHSZ; i++) {
struct inet_frag_queue *q;
struct hlist_node *p, *n;
hlist_for_each_entry_safe(q, p, n, &f->hash[i], list) {
unsigned int hval = f->hashfn(q);
if (hval != i) {
hlist_del(&q->list);
/* Relink to new hash chain. */
hlist_add_head(&q->list, &f->hash[hval]);
}
}
}
write_unlock(&f->lock);
mod_timer(&f->secret_timer, now + f->ctl->secret_interval);
}
void inet_frags_init(struct inet_frags *f)
{
int i;
for (i = 0; i < INETFRAGS_HASHSZ; i++)
INIT_HLIST_HEAD(&f->hash[i]);
INIT_LIST_HEAD(&f->lru_list);
rwlock_init(&f->lock);
f->rnd = (u32) ((num_physpages ^ (num_physpages>>7)) ^
(jiffies ^ (jiffies >> 6)));
f->nqueues = 0;
atomic_set(&f->mem, 0);
init_timer(&f->secret_timer);
f->secret_timer.function = inet_frag_secret_rebuild;
f->secret_timer.data = (unsigned long)f;
f->secret_timer.expires = jiffies + f->ctl->secret_interval;
add_timer(&f->secret_timer);
}
EXPORT_SYMBOL(inet_frags_init);
void inet_frags_fini(struct inet_frags *f)
{
del_timer(&f->secret_timer);
}
EXPORT_SYMBOL(inet_frags_fini);
static inline void fq_unlink(struct inet_frag_queue *fq, struct inet_frags *f)
{
write_lock(&f->lock);
hlist_del(&fq->list);
list_del(&fq->lru_list);
f->nqueues--;
write_unlock(&f->lock);
}
void inet_frag_kill(struct inet_frag_queue *fq, struct inet_frags *f)
{
if (del_timer(&fq->timer))
atomic_dec(&fq->refcnt);
if (!(fq->last_in & COMPLETE)) {
fq_unlink(fq, f);
atomic_dec(&fq->refcnt);
fq->last_in |= COMPLETE;
}
}
EXPORT_SYMBOL(inet_frag_kill);
static inline void frag_kfree_skb(struct inet_frags *f, struct sk_buff *skb,
int *work)
{
if (work)
*work -= skb->truesize;
atomic_sub(skb->truesize, &f->mem);
if (f->skb_free)
f->skb_free(skb);
kfree_skb(skb);
}
void inet_frag_destroy(struct inet_frag_queue *q, struct inet_frags *f,
int *work)
{
struct sk_buff *fp;
BUG_TRAP(q->last_in & COMPLETE);
BUG_TRAP(del_timer(&q->timer) == 0);
/* Release all fragment data. */
fp = q->fragments;
while (fp) {
struct sk_buff *xp = fp->next;
frag_kfree_skb(f, fp, work);
fp = xp;
}
if (work)
*work -= f->qsize;
atomic_sub(f->qsize, &f->mem);
f->destructor(q);
}
EXPORT_SYMBOL(inet_frag_destroy);
int inet_frag_evictor(struct inet_frags *f)
{
struct inet_frag_queue *q;
int work, evicted = 0;
work = atomic_read(&f->mem) - f->ctl->low_thresh;
while (work > 0) {
read_lock(&f->lock);
if (list_empty(&f->lru_list)) {
read_unlock(&f->lock);
break;
}
q = list_first_entry(&f->lru_list,
struct inet_frag_queue, lru_list);
atomic_inc(&q->refcnt);
read_unlock(&f->lock);
spin_lock(&q->lock);
if (!(q->last_in & COMPLETE))
inet_frag_kill(q, f);
spin_unlock(&q->lock);
if (atomic_dec_and_test(&q->refcnt))
inet_frag_destroy(q, f, &work);
evicted++;
}
return evicted;
}
EXPORT_SYMBOL(inet_frag_evictor);

2
net/ipv4/ip_forward.c
View File

@ -40,7 +40,7 @@
#include <net/route.h>
#include <net/xfrm.h>
static inline int ip_forward_finish(struct sk_buff *skb)
static int ip_forward_finish(struct sk_buff *skb)
{
struct ip_options * opt = &(IPCB(skb)->opt);

419
net/ipv4/ip_fragment.c
View File

@ -39,6 +39,7 @@
#include <net/icmp.h>
#include <net/checksum.h>
#include <net/inetpeer.h>
#include <net/inet_frag.h>
#include <linux/tcp.h>
#include <linux/udp.h>
#include <linux/inet.h>
@ -49,21 +50,8 @@
* as well. Or notify me, at least. --ANK
*/
/* Fragment cache limits. We will commit 256K at one time. Should we
* cross that limit we will prune down to 192K. This should cope with
* even the most extreme cases without allowing an attacker to measurably
* harm machine performance.
*/
int sysctl_ipfrag_high_thresh __read_mostly = 256*1024;
int sysctl_ipfrag_low_thresh __read_mostly = 192*1024;
int sysctl_ipfrag_max_dist __read_mostly = 64;
/* Important NOTE! Fragment queue must be destroyed before MSL expires.
* RFC791 is wrong proposing to prolongate timer each fragment arrival by TTL.
*/
int sysctl_ipfrag_time __read_mostly = IP_FRAG_TIME;
struct ipfrag_skb_cb
{
struct inet_skb_parm h;
@ -74,153 +62,102 @@ struct ipfrag_skb_cb
/* Describe an entry in the "incomplete datagrams" queue. */
struct ipq {
struct hlist_node list;
struct list_head lru_list; /* lru list member */
struct inet_frag_queue q;
u32 user;
__be32 saddr;
__be32 daddr;
__be16 id;
u8 protocol;
u8 last_in;
#define COMPLETE 4
#define FIRST_IN 2
#define LAST_IN 1
struct sk_buff *fragments; /* linked list of received fragments */
int len; /* total length of original datagram */
int meat;
spinlock_t lock;
atomic_t refcnt;
struct timer_list timer; /* when will this queue expire? */
ktime_t stamp;
int iif;
unsigned int rid;
struct inet_peer *peer;
};
/* Hash table. */
struct inet_frags_ctl ip4_frags_ctl __read_mostly = {
/*
* Fragment cache limits. We will commit 256K at one time. Should we
* cross that limit we will prune down to 192K. This should cope with
* even the most extreme cases without allowing an attacker to
* measurably harm machine performance.
*/
.high_thresh = 256 * 1024,
.low_thresh = 192 * 1024,
#define IPQ_HASHSZ 64
/*
* Important NOTE! Fragment queue must be destroyed before MSL expires.
* RFC791 is wrong proposing to prolongate timer each fragment arrival
* by TTL.
*/
.timeout = IP_FRAG_TIME,
.secret_interval = 10 * 60 * HZ,
};
/* Per-bucket lock is easy to add now. */
static struct hlist_head ipq_hash[IPQ_HASHSZ];
static DEFINE_RWLOCK(ipfrag_lock);
static u32 ipfrag_hash_rnd;
static LIST_HEAD(ipq_lru_list);
int ip_frag_nqueues = 0;
static struct inet_frags ip4_frags;
static __inline__ void __ipq_unlink(struct ipq *qp)
int ip_frag_nqueues(void)
{
hlist_del(&qp->list);
list_del(&qp->lru_list);
ip_frag_nqueues--;
return ip4_frags.nqueues;
}
static __inline__ void ipq_unlink(struct ipq *ipq)
int ip_frag_mem(void)
{
write_lock(&ipfrag_lock);
__ipq_unlink(ipq);
write_unlock(&ipfrag_lock);
return atomic_read(&ip4_frags.mem);
}
static int ip_frag_reasm(struct ipq *qp, struct sk_buff *prev,
struct net_device *dev);
static unsigned int ipqhashfn(__be16 id, __be32 saddr, __be32 daddr, u8 prot)
{
return jhash_3words((__force u32)id << 16 | prot,
(__force u32)saddr, (__force u32)daddr,
ipfrag_hash_rnd) & (IPQ_HASHSZ - 1);
ip4_frags.rnd) & (INETFRAGS_HASHSZ - 1);
}
static struct timer_list ipfrag_secret_timer;
int sysctl_ipfrag_secret_interval __read_mostly = 10 * 60 * HZ;
static void ipfrag_secret_rebuild(unsigned long dummy)
static unsigned int ip4_hashfn(struct inet_frag_queue *q)
{
unsigned long now = jiffies;
int i;
struct ipq *ipq;
write_lock(&ipfrag_lock);
get_random_bytes(&ipfrag_hash_rnd, sizeof(u32));
for (i = 0; i < IPQ_HASHSZ; i++) {
struct ipq *q;
struct hlist_node *p, *n;
hlist_for_each_entry_safe(q, p, n, &ipq_hash[i], list) {
unsigned int hval = ipqhashfn(q->id, q->saddr,
q->daddr, q->protocol);
if (hval != i) {
hlist_del(&q->list);
/* Relink to new hash chain. */
hlist_add_head(&q->list, &ipq_hash[hval]);
}
}
}
write_unlock(&ipfrag_lock);
mod_timer(&ipfrag_secret_timer, now + sysctl_ipfrag_secret_interval);
ipq = container_of(q, struct ipq, q);
return ipqhashfn(ipq->id, ipq->saddr, ipq->daddr, ipq->protocol);
}
atomic_t ip_frag_mem = ATOMIC_INIT(0); /* Memory used for fragments */
/* Memory Tracking Functions. */
static __inline__ void frag_kfree_skb(struct sk_buff *skb, int *work)
{
if (work)
*work -= skb->truesize;
atomic_sub(skb->truesize, &ip_frag_mem);
atomic_sub(skb->truesize, &ip4_frags.mem);
kfree_skb(skb);
}
static __inline__ void frag_free_queue(struct ipq *qp, int *work)
static __inline__ void ip4_frag_free(struct inet_frag_queue *q)
{
if (work)
*work -= sizeof(struct ipq);
atomic_sub(sizeof(struct ipq), &ip_frag_mem);
struct ipq *qp;
qp = container_of(q, struct ipq, q);
if (qp->peer)
inet_putpeer(qp->peer);
kfree(qp);
}
static __inline__ struct ipq *frag_alloc_queue(void)
{
struct ipq *qp = kmalloc(sizeof(struct ipq), GFP_ATOMIC);
struct ipq *qp = kzalloc(sizeof(struct ipq), GFP_ATOMIC);
if (!qp)
return NULL;
atomic_add(sizeof(struct ipq), &ip_frag_mem);
atomic_add(sizeof(struct ipq), &ip4_frags.mem);
return qp;
}
/* Destruction primitives. */
/* Complete destruction of ipq. */
static void ip_frag_destroy(struct ipq *qp, int *work)
static __inline__ void ipq_put(struct ipq *ipq)
{
struct sk_buff *fp;
BUG_TRAP(qp->last_in&COMPLETE);
BUG_TRAP(del_timer(&qp->timer) == 0);
if (qp->peer)
inet_putpeer(qp->peer);
/* Release all fragment data. */
fp = qp->fragments;
while (fp) {
struct sk_buff *xp = fp->next;
frag_kfree_skb(fp, work);
fp = xp;
}
/* Finally, release the queue descriptor itself. */
frag_free_queue(qp, work);
}
static __inline__ void ipq_put(struct ipq *ipq, int *work)
{
if (atomic_dec_and_test(&ipq->refcnt))
ip_frag_destroy(ipq, work);
inet_frag_put(&ipq->q, &ip4_frags);
}
/* Kill ipq entry. It is not destroyed immediately,
@ -228,14 +165,7 @@ static __inline__ void ipq_put(struct ipq *ipq, int *work)
*/
static void ipq_kill(struct ipq *ipq)
{
if (del_timer(&ipq->timer))
atomic_dec(&ipq->refcnt);
if (!(ipq->last_in & COMPLETE)) {
ipq_unlink(ipq);
atomic_dec(&ipq->refcnt);
ipq->last_in |= COMPLETE;
}
inet_frag_kill(&ipq->q, &ip4_frags);
}
/* Memory limiting on fragments. Evictor trashes the oldest
@ -243,33 +173,11 @@ static void ipq_kill(struct ipq *ipq)
*/
static void ip_evictor(void)
{
struct ipq *qp;
struct list_head *tmp;
int work;
int evicted;
work = atomic_read(&ip_frag_mem) - sysctl_ipfrag_low_thresh;
if (work <= 0)
return;
while (work > 0) {
read_lock(&ipfrag_lock);
if (list_empty(&ipq_lru_list)) {
read_unlock(&ipfrag_lock);
return;
}
tmp = ipq_lru_list.next;
qp = list_entry(tmp, struct ipq, lru_list);
atomic_inc(&qp->refcnt);
read_unlock(&ipfrag_lock);
spin_lock(&qp->lock);
if (!(qp->last_in&COMPLETE))
ipq_kill(qp);
spin_unlock(&qp->lock);
ipq_put(qp, &work);
IP_INC_STATS_BH(IPSTATS_MIB_REASMFAILS);
}
evicted = inet_frag_evictor(&ip4_frags);
if (evicted)
IP_ADD_STATS_BH(IPSTATS_MIB_REASMFAILS, evicted);
}
/*
@ -279,9 +187,9 @@ static void ip_expire(unsigned long arg)
{
struct ipq *qp = (struct ipq *) arg;
spin_lock(&qp->lock);
spin_lock(&qp->q.lock);
if (qp->last_in & COMPLETE)
if (qp->q.last_in & COMPLETE)
goto out;
ipq_kill(qp);
@ -289,8 +197,8 @@ static void ip_expire(unsigned long arg)
IP_INC_STATS_BH(IPSTATS_MIB_REASMTIMEOUT);
IP_INC_STATS_BH(IPSTATS_MIB_REASMFAILS);
if ((qp->last_in&FIRST_IN) && qp->fragments != NULL) {
struct sk_buff *head = qp->fragments;
if ((qp->q.last_in&FIRST_IN) && qp->q.fragments != NULL) {
struct sk_buff *head = qp->q.fragments;
/* Send an ICMP "Fragment Reassembly Timeout" message. */
if ((head->dev = dev_get_by_index(&init_net, qp->iif)) != NULL) {
icmp_send(head, ICMP_TIME_EXCEEDED, ICMP_EXC_FRAGTIME, 0);
@ -298,8 +206,8 @@ static void ip_expire(unsigned long arg)
}
}
out:
spin_unlock(&qp->lock);
ipq_put(qp, NULL);
spin_unlock(&qp->q.lock);
ipq_put(qp);
}
/* Creation primitives. */
@ -312,7 +220,7 @@ static struct ipq *ip_frag_intern(struct ipq *qp_in)
#endif
unsigned int hash;
write_lock(&ipfrag_lock);
write_lock(&ip4_frags.lock);
hash = ipqhashfn(qp_in->id, qp_in->saddr, qp_in->daddr,
qp_in->protocol);
#ifdef CONFIG_SMP
@ -320,31 +228,31 @@ static struct ipq *ip_frag_intern(struct ipq *qp_in)
* such entry could be created on other cpu, while we
* promoted read lock to write lock.
*/
hlist_for_each_entry(qp, n, &ipq_hash[hash], list) {
hlist_for_each_entry(qp, n, &ip4_frags.hash[hash], q.list) {
if (qp->id == qp_in->id &&
qp->saddr == qp_in->saddr &&
qp->daddr == qp_in->daddr &&
qp->protocol == qp_in->protocol &&
qp->user == qp_in->user) {
atomic_inc(&qp->refcnt);
write_unlock(&ipfrag_lock);
qp_in->last_in |= COMPLETE;
ipq_put(qp_in, NULL);
atomic_inc(&qp->q.refcnt);
write_unlock(&ip4_frags.lock);
qp_in->q.last_in |= COMPLETE;
ipq_put(qp_in);
return qp;
}
}
#endif
qp = qp_in;
if (!mod_timer(&qp->timer, jiffies + sysctl_ipfrag_time))
atomic_inc(&qp->refcnt);
if (!mod_timer(&qp->q.timer, jiffies + ip4_frags_ctl.timeout))
atomic_inc(&qp->q.refcnt);
atomic_inc(&qp->refcnt);
hlist_add_head(&qp->list, &ipq_hash[hash]);
INIT_LIST_HEAD(&qp->lru_list);
list_add_tail(&qp->lru_list, &ipq_lru_list);
ip_frag_nqueues++;
write_unlock(&ipfrag_lock);
atomic_inc(&qp->q.refcnt);
hlist_add_head(&qp->q.list, &ip4_frags.hash[hash]);
INIT_LIST_HEAD(&qp->q.lru_list);
list_add_tail(&qp->q.lru_list, &ip4_frags.lru_list);
ip4_frags.nqueues++;
write_unlock(&ip4_frags.lock);
return qp;
}
@ -357,23 +265,18 @@ static struct ipq *ip_frag_create(struct iphdr *iph, u32 user)
goto out_nomem;
qp->protocol = iph->protocol;
qp->last_in = 0;
qp->id = iph->id;
qp->saddr = iph->saddr;
qp->daddr = iph->daddr;
qp->user = user;
qp->len = 0;
qp->meat = 0;
qp->fragments = NULL;
qp->iif = 0;
qp->peer = sysctl_ipfrag_max_dist ? inet_getpeer(iph->saddr, 1) : NULL;
/* Initialize a timer for this entry. */
init_timer(&qp->timer);
qp->timer.data = (unsigned long) qp; /* pointer to queue */
qp->timer.function = ip_expire; /* expire function */
spin_lock_init(&qp->lock);
atomic_set(&qp->refcnt, 1);
init_timer(&qp->q.timer);
qp->q.timer.data = (unsigned long) qp; /* pointer to queue */
qp->q.timer.function = ip_expire; /* expire function */
spin_lock_init(&qp->q.lock);
atomic_set(&qp->q.refcnt, 1);
return ip_frag_intern(qp);
@ -395,20 +298,20 @@ static inline struct ipq *ip_find(struct iphdr *iph, u32 user)
struct ipq *qp;
struct hlist_node *n;
read_lock(&ipfrag_lock);
read_lock(&ip4_frags.lock);
hash = ipqhashfn(id, saddr, daddr, protocol);
hlist_for_each_entry(qp, n, &ipq_hash[hash], list) {
hlist_for_each_entry(qp, n, &ip4_frags.hash[hash], q.list) {
if (qp->id == id &&
qp->saddr == saddr &&
qp->daddr == daddr &&
qp->protocol == protocol &&
qp->user == user) {
atomic_inc(&qp->refcnt);
read_unlock(&ipfrag_lock);
atomic_inc(&qp->q.refcnt);
read_unlock(&ip4_frags.lock);
return qp;
}
}
read_unlock(&ipfrag_lock);
read_unlock(&ip4_frags.lock);
return ip_frag_create(iph, user);
}
@ -429,7 +332,7 @@ static inline int ip_frag_too_far(struct ipq *qp)
end = atomic_inc_return(&peer->rid);
qp->rid = end;
rc = qp->fragments && (end - start) > max;
rc = qp->q.fragments && (end - start) > max;
if (rc) {
IP_INC_STATS_BH(IPSTATS_MIB_REASMFAILS);
@ -442,39 +345,42 @@ static int ip_frag_reinit(struct ipq *qp)
{
struct sk_buff *fp;
if (!mod_timer(&qp->timer, jiffies + sysctl_ipfrag_time)) {
atomic_inc(&qp->refcnt);
if (!mod_timer(&qp->q.timer, jiffies + ip4_frags_ctl.timeout)) {
atomic_inc(&qp->q.refcnt);
return -ETIMEDOUT;
}
fp = qp->fragments;
fp = qp->q.fragments;
do {
struct sk_buff *xp = fp->next;
frag_kfree_skb(fp, NULL);
fp = xp;
} while (fp);
qp->last_in = 0;
qp->len = 0;
qp->meat = 0;
qp->fragments = NULL;
qp->q.last_in = 0;
qp->q.len = 0;
qp->q.meat = 0;
qp->q.fragments = NULL;
qp->iif = 0;
return 0;
}
/* Add new segment to existing queue. */
static void ip_frag_queue(struct ipq *qp, struct sk_buff *skb)
static int ip_frag_queue(struct ipq *qp, struct sk_buff *skb)
{
struct sk_buff *prev, *next;
struct net_device *dev;
int flags, offset;
int ihl, end;
int err = -ENOENT;
if (qp->last_in & COMPLETE)
if (qp->q.last_in & COMPLETE)
goto err;
if (!(IPCB(skb)->flags & IPSKB_FRAG_COMPLETE) &&
unlikely(ip_frag_too_far(qp)) && unlikely(ip_frag_reinit(qp))) {
unlikely(ip_frag_too_far(qp)) &&
unlikely(err = ip_frag_reinit(qp))) {
ipq_kill(qp);
goto err;
}
@ -487,36 +393,40 @@ static void ip_frag_queue(struct ipq *qp, struct sk_buff *skb)
/* Determine the position of this fragment. */
end = offset + skb->len - ihl;
err = -EINVAL;
/* Is this the final fragment? */
if ((flags & IP_MF) == 0) {
/* If we already have some bits beyond end
* or have different end, the segment is corrrupted.
*/
if (end < qp->len ||
((qp->last_in & LAST_IN) && end != qp->len))
if (end < qp->q.len ||
((qp->q.last_in & LAST_IN) && end != qp->q.len))
goto err;
qp->last_in |= LAST_IN;
qp->len = end;
qp->q.last_in |= LAST_IN;
qp->q.len = end;
} else {
if (end&7) {
end &= ~7;
if (skb->ip_summed != CHECKSUM_UNNECESSARY)
skb->ip_summed = CHECKSUM_NONE;
}
if (end > qp->len) {
if (end > qp->q.len) {
/* Some bits beyond end -> corruption. */
if (qp->last_in & LAST_IN)
if (qp->q.last_in & LAST_IN)
goto err;
qp->len = end;
qp->q.len = end;
}
}
if (end == offset)
goto err;
err = -ENOMEM;
if (pskb_pull(skb, ihl) == NULL)
goto err;
if (pskb_trim_rcsum(skb, end-offset))
err = pskb_trim_rcsum(skb, end - offset);
if (err)
goto err;
/* Find out which fragments are in front and at the back of us
@ -524,7 +434,7 @@ static void ip_frag_queue(struct ipq *qp, struct sk_buff *skb)
* this fragment, right?
*/
prev = NULL;
for (next = qp->fragments; next != NULL; next = next->next) {
for (next = qp->q.fragments; next != NULL; next = next->next) {
if (FRAG_CB(next)->offset >= offset)
break; /* bingo! */
prev = next;
@ -539,8 +449,10 @@ static void ip_frag_queue(struct ipq *qp, struct sk_buff *skb)
if (i > 0) {
offset += i;
err = -EINVAL;
if (end <= offset)
goto err;
err = -ENOMEM;
if (!pskb_pull(skb, i))
goto err;
if (skb->ip_summed != CHECKSUM_UNNECESSARY)
@ -548,6 +460,8 @@ static void ip_frag_queue(struct ipq *qp, struct sk_buff *skb)
}
}
err = -ENOMEM;
while (next && FRAG_CB(next)->offset < end) {
int i = end - FRAG_CB(next)->offset; /* overlap is 'i' bytes */
@ -558,7 +472,7 @@ static void ip_frag_queue(struct ipq *qp, struct sk_buff *skb)
if (!pskb_pull(next, i))
goto err;
FRAG_CB(next)->offset += i;
qp->meat -= i;
qp->q.meat -= i;
if (next->ip_summed != CHECKSUM_UNNECESSARY)
next->ip_summed = CHECKSUM_NONE;
break;
@ -573,9 +487,9 @@ static void ip_frag_queue(struct ipq *qp, struct sk_buff *skb)
if (prev)
prev->next = next;
else
qp->fragments = next;
qp->q.fragments = next;
qp->meat -= free_it->len;
qp->q.meat -= free_it->len;
frag_kfree_skb(free_it, NULL);
}
}
@ -587,50 +501,77 @@ static void ip_frag_queue(struct ipq *qp, struct sk_buff *skb)
if (prev)
prev->next = skb;
else
qp->fragments = skb;
qp->q.fragments = skb;
if (skb->dev)
qp->iif = skb->dev->ifindex;
skb->dev = NULL;
qp->stamp = skb->tstamp;
qp->meat += skb->len;
atomic_add(skb->truesize, &ip_frag_mem);
dev = skb->dev;
if (dev) {
qp->iif = dev->ifindex;
skb->dev = NULL;
}
qp->q.stamp = skb->tstamp;
qp->q.meat += skb->len;
atomic_add(skb->truesize, &ip4_frags.mem);
if (offset == 0)
qp->last_in |= FIRST_IN;
qp->q.last_in |= FIRST_IN;
write_lock(&ipfrag_lock);
list_move_tail(&qp->lru_list, &ipq_lru_list);
write_unlock(&ipfrag_lock);
if (qp->q.last_in == (FIRST_IN | LAST_IN) && qp->q.meat == qp->q.len)
return ip_frag_reasm(qp, prev, dev);
return;
write_lock(&ip4_frags.lock);
list_move_tail(&qp->q.lru_list, &ip4_frags.lru_list);
write_unlock(&ip4_frags.lock);
return -EINPROGRESS;
err:
kfree_skb(skb);
return err;
}
/* Build a new IP datagram from all its fragments. */
static struct sk_buff *ip_frag_reasm(struct ipq *qp, struct net_device *dev)
static int ip_frag_reasm(struct ipq *qp, struct sk_buff *prev,
struct net_device *dev)
{
struct iphdr *iph;
struct sk_buff *fp, *head = qp->fragments;
struct sk_buff *fp, *head = qp->q.fragments;
int len;
int ihlen;
int err;
ipq_kill(qp);
/* Make the one we just received the head. */
if (prev) {
head = prev->next;
fp = skb_clone(head, GFP_ATOMIC);
if (!fp)
goto out_nomem;
fp->next = head->next;
prev->next = fp;
skb_morph(head, qp->q.fragments);
head->next = qp->q.fragments->next;
kfree_skb(qp->q.fragments);
qp->q.fragments = head;
}
BUG_TRAP(head != NULL);
BUG_TRAP(FRAG_CB(head)->offset == 0);
/* Allocate a new buffer for the datagram. */
ihlen = ip_hdrlen(head);
len = ihlen + qp->len;
len = ihlen + qp->q.len;
err = -E2BIG;
if (len > 65535)
goto out_oversize;
/* Head of list must not be cloned. */
err = -ENOMEM;
if (skb_cloned(head) && pskb_expand_head(head, 0, 0, GFP_ATOMIC))
goto out_nomem;
@ -654,12 +595,12 @@ static struct sk_buff *ip_frag_reasm(struct ipq *qp, struct net_device *dev)
head->len -= clone->len;
clone->csum = 0;
clone->ip_summed = head->ip_summed;
atomic_add(clone->truesize, &ip_frag_mem);
atomic_add(clone->truesize, &ip4_frags.mem);
}
skb_shinfo(head)->frag_list = head->next;
skb_push(head, head->data - skb_network_header(head));
atomic_sub(head->truesize, &ip_frag_mem);
atomic_sub(head->truesize, &ip4_frags.mem);
for (fp=head->next; fp; fp = fp->next) {
head->data_len += fp->len;
@ -669,19 +610,19 @@ static struct sk_buff *ip_frag_reasm(struct ipq *qp, struct net_device *dev)
else if (head->ip_summed == CHECKSUM_COMPLETE)
head->csum = csum_add(head->csum, fp->csum);
head->truesize += fp->truesize;
atomic_sub(fp->truesize, &ip_frag_mem);
atomic_sub(fp->truesize, &ip4_frags.mem);
}
head->next = NULL;
head->dev = dev;
head->tstamp = qp->stamp;
head->tstamp = qp->q.stamp;
iph = ip_hdr(head);
iph->frag_off = 0;
iph->tot_len = htons(len);
IP_INC_STATS_BH(IPSTATS_MIB_REASMOKS);
qp->fragments = NULL;
return head;
qp->q.fragments = NULL;
return 0;
out_nomem:
LIMIT_NETDEBUG(KERN_ERR "IP: queue_glue: no memory for gluing "
@ -694,54 +635,46 @@ out_oversize:
NIPQUAD(qp->saddr));
out_fail:
IP_INC_STATS_BH(IPSTATS_MIB_REASMFAILS);
return NULL;
return err;
}
/* Process an incoming IP datagram fragment. */
struct sk_buff *ip_defrag(struct sk_buff *skb, u32 user)
int ip_defrag(struct sk_buff *skb, u32 user)
{
struct ipq *qp;
struct net_device *dev;
IP_INC_STATS_BH(IPSTATS_MIB_REASMREQDS);
/* Start by cleaning up the memory. */
if (atomic_read(&ip_frag_mem) > sysctl_ipfrag_high_thresh)
if (atomic_read(&ip4_frags.mem) > ip4_frags_ctl.high_thresh)
ip_evictor();
dev = skb->dev;
/* Lookup (or create) queue header */
if ((qp = ip_find(ip_hdr(skb), user)) != NULL) {
struct sk_buff *ret = NULL;
int ret;
spin_lock(&qp->lock);
spin_lock(&qp->q.lock);
ip_frag_queue(qp, skb);
ret = ip_frag_queue(qp, skb);
if (qp->last_in == (FIRST_IN|LAST_IN) &&
qp->meat == qp->len)
ret = ip_frag_reasm(qp, dev);
spin_unlock(&qp->lock);
ipq_put(qp, NULL);
spin_unlock(&qp->q.lock);
ipq_put(qp);
return ret;
}
IP_INC_STATS_BH(IPSTATS_MIB_REASMFAILS);
kfree_skb(skb);
return NULL;
return -ENOMEM;
}
void __init ipfrag_init(void)
{
ipfrag_hash_rnd = (u32) ((num_physpages ^ (num_physpages>>7)) ^
(jiffies ^ (jiffies >> 6)));
init_timer(&ipfrag_secret_timer);
ipfrag_secret_timer.function = ipfrag_secret_rebuild;
ipfrag_secret_timer.expires = jiffies + sysctl_ipfrag_secret_interval;
add_timer(&ipfrag_secret_timer);
ip4_frags.ctl = &ip4_frags_ctl;
ip4_frags.hashfn = ip4_hashfn;
ip4_frags.destructor = ip4_frag_free;
ip4_frags.skb_free = NULL;
ip4_frags.qsize = sizeof(struct ipq);
inet_frags_init(&ip4_frags);
}
EXPORT_SYMBOL(ip_defrag);

10
net/ipv4/ip_input.c
View File

@ -172,8 +172,7 @@ int ip_call_ra_chain(struct sk_buff *skb)
(!sk->sk_bound_dev_if ||
sk->sk_bound_dev_if == skb->dev->ifindex)) {
if (ip_hdr(skb)->frag_off & htons(IP_MF | IP_OFFSET)) {
skb = ip_defrag(skb, IP_DEFRAG_CALL_RA_CHAIN);
if (skb == NULL) {
if (ip_defrag(skb, IP_DEFRAG_CALL_RA_CHAIN)) {
read_unlock(&ip_ra_lock);
return 1;
}
@ -196,7 +195,7 @@ int ip_call_ra_chain(struct sk_buff *skb)
return 0;
}
static inline int ip_local_deliver_finish(struct sk_buff *skb)
static int ip_local_deliver_finish(struct sk_buff *skb)
{
__skb_pull(skb, ip_hdrlen(skb));
@ -265,8 +264,7 @@ int ip_local_deliver(struct sk_buff *skb)
*/
if (ip_hdr(skb)->frag_off & htons(IP_MF | IP_OFFSET)) {
skb = ip_defrag(skb, IP_DEFRAG_LOCAL_DELIVER);
if (!skb)
if (ip_defrag(skb, IP_DEFRAG_LOCAL_DELIVER))
return 0;
}
@ -326,7 +324,7 @@ drop:
return -1;
}
static inline int ip_rcv_finish(struct sk_buff *skb)
static int ip_rcv_finish(struct sk_buff *skb)
{
const struct iphdr *iph = ip_hdr(skb);
struct rtable *rt;

2
net/ipv4/ip_output.c
View File

@ -202,7 +202,7 @@ static inline int ip_skb_dst_mtu(struct sk_buff *skb)
skb->dst->dev->mtu : dst_mtu(skb->dst);
}
static inline int ip_finish_output(struct sk_buff *skb)
static int ip_finish_output(struct sk_buff *skb)
{
#if defined(CONFIG_NETFILTER) && defined(CONFIG_XFRM)
/* Policy lookup after SNAT yielded a new policy */

33
net/ipv4/ipvs/ip_vs_app.c
View File

@ -25,6 +25,7 @@
#include <linux/skbuff.h>
#include <linux/in.h>
#include <linux/ip.h>
#include <linux/netfilter.h>
#include <net/net_namespace.h>
#include <net/protocol.h>
#include <net/tcp.h>
@ -328,18 +329,18 @@ static inline void vs_seq_update(struct ip_vs_conn *cp, struct ip_vs_seq *vseq,
spin_unlock(&cp->lock);
}
static inline int app_tcp_pkt_out(struct ip_vs_conn *cp, struct sk_buff **pskb,
static inline int app_tcp_pkt_out(struct ip_vs_conn *cp, struct sk_buff *skb,
struct ip_vs_app *app)
{
int diff;
const unsigned int tcp_offset = ip_hdrlen(*pskb);
const unsigned int tcp_offset = ip_hdrlen(skb);
struct tcphdr *th;
__u32 seq;
if (!ip_vs_make_skb_writable(pskb, tcp_offset + sizeof(*th)))
if (!skb_make_writable(skb, tcp_offset + sizeof(*th)))
return 0;
th = (struct tcphdr *)(skb_network_header(*pskb) + tcp_offset);
th = (struct tcphdr *)(skb_network_header(skb) + tcp_offset);
/*
* Remember seq number in case this pkt gets resized
@ -360,7 +361,7 @@ static inline int app_tcp_pkt_out(struct ip_vs_conn *cp, struct sk_buff **pskb,
if (app->pkt_out == NULL)
return 1;
if (!app->pkt_out(app, cp, pskb, &diff))
if (!app->pkt_out(app, cp, skb, &diff))
return 0;
/*
@ -378,7 +379,7 @@ static inline int app_tcp_pkt_out(struct ip_vs_conn *cp, struct sk_buff **pskb,
* called by ipvs packet handler, assumes previously checked cp!=NULL
* returns false if it can't handle packet (oom)
*/
int ip_vs_app_pkt_out(struct ip_vs_conn *cp, struct sk_buff **pskb)
int ip_vs_app_pkt_out(struct ip_vs_conn *cp, struct sk_buff *skb)
{
struct ip_vs_app *app;
@ -391,7 +392,7 @@ int ip_vs_app_pkt_out(struct ip_vs_conn *cp, struct sk_buff **pskb)
/* TCP is complicated */
if (cp->protocol == IPPROTO_TCP)
return app_tcp_pkt_out(cp, pskb, app);
return app_tcp_pkt_out(cp, skb, app);
/*
* Call private output hook function
@ -399,22 +400,22 @@ int ip_vs_app_pkt_out(struct ip_vs_conn *cp, struct sk_buff **pskb)
if (app->pkt_out == NULL)
return 1;
return app->pkt_out(app, cp, pskb, NULL);
return app->pkt_out(app, cp, skb, NULL);
}
static inline int app_tcp_pkt_in(struct ip_vs_conn *cp, struct sk_buff **pskb,
static inline int app_tcp_pkt_in(struct ip_vs_conn *cp, struct sk_buff *skb,
struct ip_vs_app *app)
{
int diff;
const unsigned int tcp_offset = ip_hdrlen(*pskb);
const unsigned int tcp_offset = ip_hdrlen(skb);
struct tcphdr *th;
__u32 seq;
if (!ip_vs_make_skb_writable(pskb, tcp_offset + sizeof(*th)))
if (!skb_make_writable(skb, tcp_offset + sizeof(*th)))
return 0;
th = (struct tcphdr *)(skb_network_header(*pskb) + tcp_offset);
th = (struct tcphdr *)(skb_network_header(skb) + tcp_offset);
/*
* Remember seq number in case this pkt gets resized
@ -435,7 +436,7 @@ static inline int app_tcp_pkt_in(struct ip_vs_conn *cp, struct sk_buff **pskb,
if (app->pkt_in == NULL)
return 1;
if (!app->pkt_in(app, cp, pskb, &diff))
if (!app->pkt_in(app, cp, skb, &diff))
return 0;
/*
@ -453,7 +454,7 @@ static inline int app_tcp_pkt_in(struct ip_vs_conn *cp, struct sk_buff **pskb,
* called by ipvs packet handler, assumes previously checked cp!=NULL.
* returns false if can't handle packet (oom).
*/
int ip_vs_app_pkt_in(struct ip_vs_conn *cp, struct sk_buff **pskb)
int ip_vs_app_pkt_in(struct ip_vs_conn *cp, struct sk_buff *skb)
{
struct ip_vs_app *app;
@ -466,7 +467,7 @@ int ip_vs_app_pkt_in(struct ip_vs_conn *cp, struct sk_buff **pskb)
/* TCP is complicated */
if (cp->protocol == IPPROTO_TCP)
return app_tcp_pkt_in(cp, pskb, app);
return app_tcp_pkt_in(cp, skb, app);
/*
* Call private input hook function
@ -474,7 +475,7 @@ int ip_vs_app_pkt_in(struct ip_vs_conn *cp, struct sk_buff **pskb)
if (app->pkt_in == NULL)
return 1;
return app->pkt_in(app, cp, pskb, NULL);
return app->pkt_in(app, cp, skb, NULL);
}

104
net/ipv4/ipvs/ip_vs_core.c
View File

@ -58,7 +58,6 @@ EXPORT_SYMBOL(ip_vs_conn_put);
#ifdef CONFIG_IP_VS_DEBUG
EXPORT_SYMBOL(ip_vs_get_debug_level);
#endif
EXPORT_SYMBOL(ip_vs_make_skb_writable);
/* ID used in ICMP lookups */
@ -163,42 +162,6 @@ ip_vs_set_state(struct ip_vs_conn *cp, int direction,
}
int ip_vs_make_skb_writable(struct sk_buff **pskb, int writable_len)
{
struct sk_buff *skb = *pskb;
/* skb is already used, better copy skb and its payload */
if (unlikely(skb_shared(skb) || skb->sk))
goto copy_skb;
/* skb data is already used, copy it */
if (unlikely(skb_cloned(skb)))
goto copy_data;
return pskb_may_pull(skb, writable_len);
copy_data:
if (unlikely(writable_len > skb->len))
return 0;
return !pskb_expand_head(skb, 0, 0, GFP_ATOMIC);
copy_skb:
if (unlikely(writable_len > skb->len))
return 0;
skb = skb_copy(skb, GFP_ATOMIC);
if (!skb)
return 0;
BUG_ON(skb_is_nonlinear(skb));
/* Rest of kernel will get very unhappy if we pass it a
suddenly-orphaned skbuff */
if ((*pskb)->sk)
skb_set_owner_w(skb, (*pskb)->sk);
kfree_skb(*pskb);
*pskb = skb;
return 1;
}
/*
* IPVS persistent scheduling function
* It creates a connection entry according to its template if exists,
@ -525,12 +488,12 @@ int ip_vs_leave(struct ip_vs_service *svc, struct sk_buff *skb,
* for VS/NAT.
*/
static unsigned int ip_vs_post_routing(unsigned int hooknum,
struct sk_buff **pskb,
struct sk_buff *skb,
const struct net_device *in,
const struct net_device *out,
int (*okfn)(struct sk_buff *))
{
if (!((*pskb)->ipvs_property))
if (!skb->ipvs_property)
return NF_ACCEPT;
/* The packet was sent from IPVS, exit this chain */
return NF_STOP;
@ -541,13 +504,14 @@ __sum16 ip_vs_checksum_complete(struct sk_buff *skb, int offset)
return csum_fold(skb_checksum(skb, offset, skb->len - offset, 0));
}
static inline struct sk_buff *
ip_vs_gather_frags(struct sk_buff *skb, u_int32_t user)
static inline int ip_vs_gather_frags(struct sk_buff *skb, u_int32_t user)
{
skb = ip_defrag(skb, user);
if (skb)
int err = ip_defrag(skb, user);
if (!err)
ip_send_check(ip_hdr(skb));
return skb;
return err;
}
/*
@ -605,9 +569,8 @@ void ip_vs_nat_icmp(struct sk_buff *skb, struct ip_vs_protocol *pp,
* Currently handles error types - unreachable, quench, ttl exceeded.
* (Only used in VS/NAT)
*/
static int ip_vs_out_icmp(struct sk_buff **pskb, int *related)
static int ip_vs_out_icmp(struct sk_buff *skb, int *related)
{
struct sk_buff *skb = *pskb;
struct iphdr *iph;
struct icmphdr _icmph, *ic;
struct iphdr _ciph, *cih; /* The ip header contained within the ICMP */
@ -619,10 +582,8 @@ static int ip_vs_out_icmp(struct sk_buff **pskb, int *related)
/* reassemble IP fragments */
if (ip_hdr(skb)->frag_off & htons(IP_MF | IP_OFFSET)) {
skb = ip_vs_gather_frags(skb, IP_DEFRAG_VS_OUT);
if (!skb)
if (ip_vs_gather_frags(skb, IP_DEFRAG_VS_OUT))
return NF_STOLEN;
*pskb = skb;
}
iph = ip_hdr(skb);
@ -690,9 +651,8 @@ static int ip_vs_out_icmp(struct sk_buff **pskb, int *related)
if (IPPROTO_TCP == cih->protocol || IPPROTO_UDP == cih->protocol)
offset += 2 * sizeof(__u16);
if (!ip_vs_make_skb_writable(pskb, offset))
if (!skb_make_writable(skb, offset))
goto out;
skb = *pskb;
ip_vs_nat_icmp(skb, pp, cp, 1);
@ -724,11 +684,10 @@ static inline int is_tcp_reset(const struct sk_buff *skb)
* rewrite addresses of the packet and send it on its way...
*/
static unsigned int
ip_vs_out(unsigned int hooknum, struct sk_buff **pskb,
ip_vs_out(unsigned int hooknum, struct sk_buff *skb,
const struct net_device *in, const struct net_device *out,
int (*okfn)(struct sk_buff *))
{
struct sk_buff *skb = *pskb;
struct iphdr *iph;
struct ip_vs_protocol *pp;
struct ip_vs_conn *cp;
@ -741,11 +700,10 @@ ip_vs_out(unsigned int hooknum, struct sk_buff **pskb,
iph = ip_hdr(skb);
if (unlikely(iph->protocol == IPPROTO_ICMP)) {
int related, verdict = ip_vs_out_icmp(pskb, &related);
int related, verdict = ip_vs_out_icmp(skb, &related);
if (related)
return verdict;
skb = *pskb;
iph = ip_hdr(skb);
}
@ -756,11 +714,9 @@ ip_vs_out(unsigned int hooknum, struct sk_buff **pskb,
/* reassemble IP fragments */
if (unlikely(iph->frag_off & htons(IP_MF|IP_OFFSET) &&
!pp->dont_defrag)) {
skb = ip_vs_gather_frags(skb, IP_DEFRAG_VS_OUT);
if (!skb)
if (ip_vs_gather_frags(skb, IP_DEFRAG_VS_OUT))
return NF_STOLEN;
iph = ip_hdr(skb);
*pskb = skb;
}
ihl = iph->ihl << 2;
@ -802,13 +758,12 @@ ip_vs_out(unsigned int hooknum, struct sk_buff **pskb,
IP_VS_DBG_PKT(11, pp, skb, 0, "Outgoing packet");
if (!ip_vs_make_skb_writable(pskb, ihl))
if (!skb_make_writable(skb, ihl))
goto drop;
/* mangle the packet */
if (pp->snat_handler && !pp->snat_handler(pskb, pp, cp))
if (pp->snat_handler && !pp->snat_handler(skb, pp, cp))
goto drop;
skb = *pskb;
ip_hdr(skb)->saddr = cp->vaddr;
ip_send_check(ip_hdr(skb));
@ -818,9 +773,8 @@ ip_vs_out(unsigned int hooknum, struct sk_buff **pskb,
* if it came from this machine itself. So re-compute
* the routing information.
*/
if (ip_route_me_harder(pskb, RTN_LOCAL) != 0)
if (ip_route_me_harder(skb, RTN_LOCAL) != 0)
goto drop;
skb = *pskb;
IP_VS_DBG_PKT(10, pp, skb, 0, "After SNAT");
@ -835,7 +789,7 @@ ip_vs_out(unsigned int hooknum, struct sk_buff **pskb,
drop:
ip_vs_conn_put(cp);
kfree_skb(*pskb);
kfree_skb(skb);
return NF_STOLEN;
}
@ -847,9 +801,8 @@ ip_vs_out(unsigned int hooknum, struct sk_buff **pskb,
* Currently handles error types - unreachable, quench, ttl exceeded.
*/
static int
ip_vs_in_icmp(struct sk_buff **pskb, int *related, unsigned int hooknum)
ip_vs_in_icmp(struct sk_buff *skb, int *related, unsigned int hooknum)
{
struct sk_buff *skb = *pskb;
struct iphdr *iph;
struct icmphdr _icmph, *ic;
struct iphdr _ciph, *cih; /* The ip header contained within the ICMP */
@ -861,12 +814,9 @@ ip_vs_in_icmp(struct sk_buff **pskb, int *related, unsigned int hooknum)
/* reassemble IP fragments */
if (ip_hdr(skb)->frag_off & htons(IP_MF | IP_OFFSET)) {
skb = ip_vs_gather_frags(skb,
hooknum == NF_IP_LOCAL_IN ?
IP_DEFRAG_VS_IN : IP_DEFRAG_VS_FWD);
if (!skb)
if (ip_vs_gather_frags(skb, hooknum == NF_IP_LOCAL_IN ?
IP_DEFRAG_VS_IN : IP_DEFRAG_VS_FWD))
return NF_STOLEN;
*pskb = skb;
}
iph = ip_hdr(skb);
@ -945,11 +895,10 @@ ip_vs_in_icmp(struct sk_buff **pskb, int *related, unsigned int hooknum)
* and send it on its way...
*/
static unsigned int
ip_vs_in(unsigned int hooknum, struct sk_buff **pskb,
ip_vs_in(unsigned int hooknum, struct sk_buff *skb,
const struct net_device *in, const struct net_device *out,
int (*okfn)(struct sk_buff *))
{
struct sk_buff *skb = *pskb;
struct iphdr *iph;
struct ip_vs_protocol *pp;
struct ip_vs_conn *cp;
@ -971,11 +920,10 @@ ip_vs_in(unsigned int hooknum, struct sk_buff **pskb,
iph = ip_hdr(skb);
if (unlikely(iph->protocol == IPPROTO_ICMP)) {
int related, verdict = ip_vs_in_icmp(pskb, &related, hooknum);
int related, verdict = ip_vs_in_icmp(skb, &related, hooknum);
if (related)
return verdict;
skb = *pskb;
iph = ip_hdr(skb);
}
@ -1056,16 +1004,16 @@ ip_vs_in(unsigned int hooknum, struct sk_buff **pskb,
* and send them to ip_vs_in_icmp.
*/
static unsigned int
ip_vs_forward_icmp(unsigned int hooknum, struct sk_buff **pskb,
ip_vs_forward_icmp(unsigned int hooknum, struct sk_buff *skb,
const struct net_device *in, const struct net_device *out,
int (*okfn)(struct sk_buff *))
{
int r;
if (ip_hdr(*pskb)->protocol != IPPROTO_ICMP)
if (ip_hdr(skb)->protocol != IPPROTO_ICMP)
return NF_ACCEPT;
return ip_vs_in_icmp(pskb, &r, hooknum);
return ip_vs_in_icmp(skb, &r, hooknum);
}

19
net/ipv4/ipvs/ip_vs_ftp.c
View File

@ -30,6 +30,7 @@
#include <linux/skbuff.h>
#include <linux/in.h>
#include <linux/ip.h>
#include <linux/netfilter.h>
#include <net/protocol.h>
#include <net/tcp.h>
#include <asm/unaligned.h>
@ -135,7 +136,7 @@ static int ip_vs_ftp_get_addrport(char *data, char *data_limit,
* xxx,xxx,xxx,xxx is the server address, ppp,ppp is the server port number.
*/
static int ip_vs_ftp_out(struct ip_vs_app *app, struct ip_vs_conn *cp,
struct sk_buff **pskb, int *diff)
struct sk_buff *skb, int *diff)
{
struct iphdr *iph;
struct tcphdr *th;
@ -155,14 +156,14 @@ static int ip_vs_ftp_out(struct ip_vs_app *app, struct ip_vs_conn *cp,
return 1;
/* Linear packets are much easier to deal with. */
if (!ip_vs_make_skb_writable(pskb, (*pskb)->len))
if (!skb_make_writable(skb, skb->len))
return 0;
if (cp->app_data == &ip_vs_ftp_pasv) {
iph = ip_hdr(*pskb);
iph = ip_hdr(skb);
th = (struct tcphdr *)&(((char *)iph)[iph->ihl*4]);
data = (char *)th + (th->doff << 2);
data_limit = skb_tail_pointer(*pskb);
data_limit = skb_tail_pointer(skb);
if (ip_vs_ftp_get_addrport(data, data_limit,
SERVER_STRING,
@ -213,7 +214,7 @@ static int ip_vs_ftp_out(struct ip_vs_app *app, struct ip_vs_conn *cp,
memcpy(start, buf, buf_len);
ret = 1;
} else {
ret = !ip_vs_skb_replace(*pskb, GFP_ATOMIC, start,
ret = !ip_vs_skb_replace(skb, GFP_ATOMIC, start,
end-start, buf, buf_len);
}
@ -238,7 +239,7 @@ static int ip_vs_ftp_out(struct ip_vs_app *app, struct ip_vs_conn *cp,
* the client.
*/
static int ip_vs_ftp_in(struct ip_vs_app *app, struct ip_vs_conn *cp,
struct sk_buff **pskb, int *diff)
struct sk_buff *skb, int *diff)
{
struct iphdr *iph;
struct tcphdr *th;
@ -256,20 +257,20 @@ static int ip_vs_ftp_in(struct ip_vs_app *app, struct ip_vs_conn *cp,
return 1;
/* Linear packets are much easier to deal with. */
if (!ip_vs_make_skb_writable(pskb, (*pskb)->len))
if (!skb_make_writable(skb, skb->len))
return 0;
/*
* Detecting whether it is passive
*/
iph = ip_hdr(*pskb);
iph = ip_hdr(skb);
th = (struct tcphdr *)&(((char *)iph)[iph->ihl*4]);
/* Since there may be OPTIONS in the TCP packet and the HLEN is
the length of the header in 32-bit multiples, it is accurate
to calculate data address by th+HLEN*4 */
data = data_start = (char *)th + (th->doff << 2);
data_limit = skb_tail_pointer(*pskb);
data_limit = skb_tail_pointer(skb);
while (data <= data_limit - 6) {
if (strnicmp(data, "PASV\r\n", 6) == 0) {

51
net/ipv4/ipvs/ip_vs_proto_tcp.c
View File

@ -20,6 +20,7 @@
#include <linux/tcp.h> /* for tcphdr */
#include <net/ip.h>
#include <net/tcp.h> /* for csum_tcpudp_magic */
#include <linux/netfilter.h>
#include <linux/netfilter_ipv4.h>
#include <net/ip_vs.h>
@ -122,27 +123,27 @@ tcp_fast_csum_update(struct tcphdr *tcph, __be32 oldip, __be32 newip,
static int
tcp_snat_handler(struct sk_buff **pskb,
tcp_snat_handler(struct sk_buff *skb,
struct ip_vs_protocol *pp, struct ip_vs_conn *cp)
{
struct tcphdr *tcph;
const unsigned int tcphoff = ip_hdrlen(*pskb);
const unsigned int tcphoff = ip_hdrlen(skb);
/* csum_check requires unshared skb */
if (!ip_vs_make_skb_writable(pskb, tcphoff+sizeof(*tcph)))
if (!skb_make_writable(skb, tcphoff+sizeof(*tcph)))
return 0;
if (unlikely(cp->app != NULL)) {
/* Some checks before mangling */
if (pp->csum_check && !pp->csum_check(*pskb, pp))
if (pp->csum_check && !pp->csum_check(skb, pp))
return 0;
/* Call application helper if needed */
if (!ip_vs_app_pkt_out(cp, pskb))
if (!ip_vs_app_pkt_out(cp, skb))
return 0;
}
tcph = (void *)ip_hdr(*pskb) + tcphoff;
tcph = (void *)ip_hdr(skb) + tcphoff;
tcph->source = cp->vport;
/* Adjust TCP checksums */
@ -150,17 +151,15 @@ tcp_snat_handler(struct sk_buff **pskb,
/* Only port and addr are changed, do fast csum update */
tcp_fast_csum_update(tcph, cp->daddr, cp->vaddr,
cp->dport, cp->vport);
if ((*pskb)->ip_summed == CHECKSUM_COMPLETE)
(*pskb)->ip_summed = CHECKSUM_NONE;
if (skb->ip_summed == CHECKSUM_COMPLETE)
skb->ip_summed = CHECKSUM_NONE;
} else {
/* full checksum calculation */
tcph->check = 0;
(*pskb)->csum = skb_checksum(*pskb, tcphoff,
(*pskb)->len - tcphoff, 0);
skb->csum = skb_checksum(skb, tcphoff, skb->len - tcphoff, 0);
tcph->check = csum_tcpudp_magic(cp->vaddr, cp->caddr,
(*pskb)->len - tcphoff,
cp->protocol,
(*pskb)->csum);
skb->len - tcphoff,
cp->protocol, skb->csum);
IP_VS_DBG(11, "O-pkt: %s O-csum=%d (+%zd)\n",
pp->name, tcph->check,
(char*)&(tcph->check) - (char*)tcph);
@ -170,30 +169,30 @@ tcp_snat_handler(struct sk_buff **pskb,
static int
tcp_dnat_handler(struct sk_buff **pskb,
tcp_dnat_handler(struct sk_buff *skb,
struct ip_vs_protocol *pp, struct ip_vs_conn *cp)
{
struct tcphdr *tcph;
const unsigned int tcphoff = ip_hdrlen(*pskb);
const unsigned int tcphoff = ip_hdrlen(skb);
/* csum_check requires unshared skb */
if (!ip_vs_make_skb_writable(pskb, tcphoff+sizeof(*tcph)))
if (!skb_make_writable(skb, tcphoff+sizeof(*tcph)))
return 0;
if (unlikely(cp->app != NULL)) {
/* Some checks before mangling */
if (pp->csum_check && !pp->csum_check(*pskb, pp))
if (pp->csum_check && !pp->csum_check(skb, pp))
return 0;
/*
* Attempt ip_vs_app call.
* It will fix ip_vs_conn and iph ack_seq stuff
*/
if (!ip_vs_app_pkt_in(cp, pskb))
if (!ip_vs_app_pkt_in(cp, skb))
return 0;
}
tcph = (void *)ip_hdr(*pskb) + tcphoff;
tcph = (void *)ip_hdr(skb) + tcphoff;
tcph->dest = cp->dport;
/*
@ -203,18 +202,16 @@ tcp_dnat_handler(struct sk_buff **pskb,
/* Only port and addr are changed, do fast csum update */
tcp_fast_csum_update(tcph, cp->vaddr, cp->daddr,
cp->vport, cp->dport);
if ((*pskb)->ip_summed == CHECKSUM_COMPLETE)
(*pskb)->ip_summed = CHECKSUM_NONE;
if (skb->ip_summed == CHECKSUM_COMPLETE)
skb->ip_summed = CHECKSUM_NONE;
} else {
/* full checksum calculation */
tcph->check = 0;
(*pskb)->csum = skb_checksum(*pskb, tcphoff,
(*pskb)->len - tcphoff, 0);
skb->csum = skb_checksum(skb, tcphoff, skb->len - tcphoff, 0);
tcph->check = csum_tcpudp_magic(cp->caddr, cp->daddr,
(*pskb)->len - tcphoff,
cp->protocol,
(*pskb)->csum);
(*pskb)->ip_summed = CHECKSUM_UNNECESSARY;
skb->len - tcphoff,
cp->protocol, skb->csum);
skb->ip_summed = CHECKSUM_UNNECESSARY;
}
return 1;
}

51
net/ipv4/ipvs/ip_vs_proto_udp.c
View File

@ -18,6 +18,7 @@
#include <linux/in.h>
#include <linux/ip.h>
#include <linux/kernel.h>
#include <linux/netfilter.h>
#include <linux/netfilter_ipv4.h>
#include <linux/udp.h>
@ -129,29 +130,29 @@ udp_fast_csum_update(struct udphdr *uhdr, __be32 oldip, __be32 newip,
}
static int
udp_snat_handler(struct sk_buff **pskb,
udp_snat_handler(struct sk_buff *skb,
struct ip_vs_protocol *pp, struct ip_vs_conn *cp)
{
struct udphdr *udph;
const unsigned int udphoff = ip_hdrlen(*pskb);
const unsigned int udphoff = ip_hdrlen(skb);
/* csum_check requires unshared skb */
if (!ip_vs_make_skb_writable(pskb, udphoff+sizeof(*udph)))
if (!skb_make_writable(skb, udphoff+sizeof(*udph)))
return 0;
if (unlikely(cp->app != NULL)) {
/* Some checks before mangling */
if (pp->csum_check && !pp->csum_check(*pskb, pp))
if (pp->csum_check && !pp->csum_check(skb, pp))
return 0;
/*
* Call application helper if needed
*/
if (!ip_vs_app_pkt_out(cp, pskb))
if (!ip_vs_app_pkt_out(cp, skb))
return 0;
}
udph = (void *)ip_hdr(*pskb) + udphoff;
udph = (void *)ip_hdr(skb) + udphoff;
udph->source = cp->vport;
/*
@ -161,17 +162,15 @@ udp_snat_handler(struct sk_buff **pskb,
/* Only port and addr are changed, do fast csum update */
udp_fast_csum_update(udph, cp->daddr, cp->vaddr,
cp->dport, cp->vport);
if ((*pskb)->ip_summed == CHECKSUM_COMPLETE)
(*pskb)->ip_summed = CHECKSUM_NONE;
if (skb->ip_summed == CHECKSUM_COMPLETE)
skb->ip_summed = CHECKSUM_NONE;
} else {
/* full checksum calculation */
udph->check = 0;
(*pskb)->csum = skb_checksum(*pskb, udphoff,
(*pskb)->len - udphoff, 0);
skb->csum = skb_checksum(skb, udphoff, skb->len - udphoff, 0);
udph->check = csum_tcpudp_magic(cp->vaddr, cp->caddr,
(*pskb)->len - udphoff,
cp->protocol,
(*pskb)->csum);
skb->len - udphoff,
cp->protocol, skb->csum);
if (udph->check == 0)
udph->check = CSUM_MANGLED_0;
IP_VS_DBG(11, "O-pkt: %s O-csum=%d (+%zd)\n",
@ -183,30 +182,30 @@ udp_snat_handler(struct sk_buff **pskb,
static int
udp_dnat_handler(struct sk_buff **pskb,
udp_dnat_handler(struct sk_buff *skb,
struct ip_vs_protocol *pp, struct ip_vs_conn *cp)
{
struct udphdr *udph;
unsigned int udphoff = ip_hdrlen(*pskb);
unsigned int udphoff = ip_hdrlen(skb);
/* csum_check requires unshared skb */
if (!ip_vs_make_skb_writable(pskb, udphoff+sizeof(*udph)))
if (!skb_make_writable(skb, udphoff+sizeof(*udph)))
return 0;
if (unlikely(cp->app != NULL)) {
/* Some checks before mangling */
if (pp->csum_check && !pp->csum_check(*pskb, pp))
if (pp->csum_check && !pp->csum_check(skb, pp))
return 0;
/*
* Attempt ip_vs_app call.
* It will fix ip_vs_conn
*/
if (!ip_vs_app_pkt_in(cp, pskb))
if (!ip_vs_app_pkt_in(cp, skb))
return 0;
}
udph = (void *)ip_hdr(*pskb) + udphoff;
udph = (void *)ip_hdr(skb) + udphoff;
udph->dest = cp->dport;
/*
@ -216,20 +215,18 @@ udp_dnat_handler(struct sk_buff **pskb,
/* Only port and addr are changed, do fast csum update */
udp_fast_csum_update(udph, cp->vaddr, cp->daddr,
cp->vport, cp->dport);
if ((*pskb)->ip_summed == CHECKSUM_COMPLETE)
(*pskb)->ip_summed = CHECKSUM_NONE;
if (skb->ip_summed == CHECKSUM_COMPLETE)
skb->ip_summed = CHECKSUM_NONE;
} else {
/* full checksum calculation */
udph->check = 0;
(*pskb)->csum = skb_checksum(*pskb, udphoff,
(*pskb)->len - udphoff, 0);
skb->csum = skb_checksum(skb, udphoff, skb->len - udphoff, 0);
udph->check = csum_tcpudp_magic(cp->caddr, cp->daddr,
(*pskb)->len - udphoff,
cp->protocol,
(*pskb)->csum);
skb->len - udphoff,
cp->protocol, skb->csum);
if (udph->check == 0)
udph->check = CSUM_MANGLED_0;
(*pskb)->ip_summed = CHECKSUM_UNNECESSARY;
skb->ip_summed = CHECKSUM_UNNECESSARY;
}
return 1;
}

6
net/ipv4/ipvs/ip_vs_xmit.c
View File

@ -253,7 +253,7 @@ ip_vs_nat_xmit(struct sk_buff *skb, struct ip_vs_conn *cp,
}
/* copy-on-write the packet before mangling it */
if (!ip_vs_make_skb_writable(&skb, sizeof(struct iphdr)))
if (!skb_make_writable(skb, sizeof(struct iphdr)))
goto tx_error_put;
if (skb_cow(skb, rt->u.dst.dev->hard_header_len))
@ -264,7 +264,7 @@ ip_vs_nat_xmit(struct sk_buff *skb, struct ip_vs_conn *cp,
skb->dst = &rt->u.dst;
/* mangle the packet */
if (pp->dnat_handler && !pp->dnat_handler(&skb, pp, cp))
if (pp->dnat_handler && !pp->dnat_handler(skb, pp, cp))
goto tx_error;
ip_hdr(skb)->daddr = cp->daddr;
ip_send_check(ip_hdr(skb));
@ -529,7 +529,7 @@ ip_vs_icmp_xmit(struct sk_buff *skb, struct ip_vs_conn *cp,
}
/* copy-on-write the packet before mangling it */
if (!ip_vs_make_skb_writable(&skb, offset))
if (!skb_make_writable(skb, offset))
goto tx_error_put;
if (skb_cow(skb, rt->u.dst.dev->hard_header_len))

77
net/ipv4/netfilter.c
View File

@ -3,14 +3,15 @@
#include <linux/netfilter.h>
#include <linux/netfilter_ipv4.h>
#include <linux/ip.h>
#include <linux/skbuff.h>
#include <net/route.h>
#include <net/xfrm.h>
#include <net/ip.h>
/* route_me_harder function, used by iptable_nat, iptable_mangle + ip_queue */
int ip_route_me_harder(struct sk_buff **pskb, unsigned addr_type)
int ip_route_me_harder(struct sk_buff *skb, unsigned addr_type)
{
const struct iphdr *iph = ip_hdr(*pskb);
const struct iphdr *iph = ip_hdr(skb);
struct rtable *rt;
struct flowi fl = {};
struct dst_entry *odst;
@ -29,14 +30,14 @@ int ip_route_me_harder(struct sk_buff **pskb, unsigned addr_type)
if (type == RTN_LOCAL)
fl.nl_u.ip4_u.saddr = iph->saddr;
fl.nl_u.ip4_u.tos = RT_TOS(iph->tos);
fl.oif = (*pskb)->sk ? (*pskb)->sk->sk_bound_dev_if : 0;
fl.mark = (*pskb)->mark;
fl.oif = skb->sk ? skb->sk->sk_bound_dev_if : 0;
fl.mark = skb->mark;
if (ip_route_output_key(&rt, &fl) != 0)
return -1;
/* Drop old route. */
dst_release((*pskb)->dst);
(*pskb)->dst = &rt->u.dst;
dst_release(skb->dst);
skb->dst = &rt->u.dst;
} else {
/* non-local src, find valid iif to satisfy
* rp-filter when calling ip_route_input. */
@ -44,8 +45,8 @@ int ip_route_me_harder(struct sk_buff **pskb, unsigned addr_type)
if (ip_route_output_key(&rt, &fl) != 0)
return -1;
odst = (*pskb)->dst;
if (ip_route_input(*pskb, iph->daddr, iph->saddr,
odst = skb->dst;
if (ip_route_input(skb, iph->daddr, iph->saddr,
RT_TOS(iph->tos), rt->u.dst.dev) != 0) {
dst_release(&rt->u.dst);
return -1;
@ -54,70 +55,54 @@ int ip_route_me_harder(struct sk_buff **pskb, unsigned addr_type)
dst_release(odst);
}
if ((*pskb)->dst->error)
if (skb->dst->error)
return -1;
#ifdef CONFIG_XFRM
if (!(IPCB(*pskb)->flags & IPSKB_XFRM_TRANSFORMED) &&
xfrm_decode_session(*pskb, &fl, AF_INET) == 0)
if (xfrm_lookup(&(*pskb)->dst, &fl, (*pskb)->sk, 0))
if (!(IPCB(skb)->flags & IPSKB_XFRM_TRANSFORMED) &&
xfrm_decode_session(skb, &fl, AF_INET) == 0)
if (xfrm_lookup(&skb->dst, &fl, skb->sk, 0))
return -1;
#endif
/* Change in oif may mean change in hh_len. */
hh_len = (*pskb)->dst->dev->hard_header_len;
if (skb_headroom(*pskb) < hh_len) {
struct sk_buff *nskb;
nskb = skb_realloc_headroom(*pskb, hh_len);
if (!nskb)
return -1;
if ((*pskb)->sk)
skb_set_owner_w(nskb, (*pskb)->sk);
kfree_skb(*pskb);
*pskb = nskb;
}
hh_len = skb->dst->dev->hard_header_len;
if (skb_headroom(skb) < hh_len &&
pskb_expand_head(skb, hh_len - skb_headroom(skb), 0, GFP_ATOMIC))
return -1;
return 0;
}
EXPORT_SYMBOL(ip_route_me_harder);
#ifdef CONFIG_XFRM
int ip_xfrm_me_harder(struct sk_buff **pskb)
int ip_xfrm_me_harder(struct sk_buff *skb)
{
struct flowi fl;
unsigned int hh_len;
struct dst_entry *dst;
if (IPCB(*pskb)->flags & IPSKB_XFRM_TRANSFORMED)
if (IPCB(skb)->flags & IPSKB_XFRM_TRANSFORMED)
return 0;
if (xfrm_decode_session(*pskb, &fl, AF_INET) < 0)
if (xfrm_decode_session(skb, &fl, AF_INET) < 0)
return -1;
dst = (*pskb)->dst;
dst = skb->dst;
if (dst->xfrm)
dst = ((struct xfrm_dst *)dst)->route;
dst_hold(dst);
if (xfrm_lookup(&dst, &fl, (*pskb)->sk, 0) < 0)
if (xfrm_lookup(&dst, &fl, skb->sk, 0) < 0)
return -1;
dst_release((*pskb)->dst);
(*pskb)->dst = dst;
dst_release(skb->dst);
skb->dst = dst;
/* Change in oif may mean change in hh_len. */
hh_len = (*pskb)->dst->dev->hard_header_len;
if (skb_headroom(*pskb) < hh_len) {
struct sk_buff *nskb;
nskb = skb_realloc_headroom(*pskb, hh_len);
if (!nskb)
return -1;
if ((*pskb)->sk)
skb_set_owner_w(nskb, (*pskb)->sk);
kfree_skb(*pskb);
*pskb = nskb;
}
hh_len = skb->dst->dev->hard_header_len;
if (skb_headroom(skb) < hh_len &&
pskb_expand_head(skb, hh_len - skb_headroom(skb), 0, GFP_ATOMIC))
return -1;
return 0;
}
EXPORT_SYMBOL(ip_xfrm_me_harder);
@ -150,17 +135,17 @@ static void nf_ip_saveroute(const struct sk_buff *skb, struct nf_info *info)
}
}
static int nf_ip_reroute(struct sk_buff **pskb, const struct nf_info *info)
static int nf_ip_reroute(struct sk_buff *skb, const struct nf_info *info)
{
const struct ip_rt_info *rt_info = nf_info_reroute(info);
if (info->hook == NF_IP_LOCAL_OUT) {
const struct iphdr *iph = ip_hdr(*pskb);
const struct iphdr *iph = ip_hdr(skb);
if (!(iph->tos == rt_info->tos
&& iph->daddr == rt_info->daddr
&& iph->saddr == rt_info->saddr))
return ip_route_me_harder(pskb, RTN_UNSPEC);
return ip_route_me_harder(skb, RTN_UNSPEC);
}
return 0;
}

20
net/ipv4/netfilter/arp_tables.c
View File

@ -197,7 +197,7 @@ static inline int arp_checkentry(const struct arpt_arp *arp)
return 1;
}
static unsigned int arpt_error(struct sk_buff **pskb,
static unsigned int arpt_error(struct sk_buff *skb,
const struct net_device *in,
const struct net_device *out,
unsigned int hooknum,
@ -215,7 +215,7 @@ static inline struct arpt_entry *get_entry(void *base, unsigned int offset)
return (struct arpt_entry *)(base + offset);
}
unsigned int arpt_do_table(struct sk_buff **pskb,
unsigned int arpt_do_table(struct sk_buff *skb,
unsigned int hook,
const struct net_device *in,
const struct net_device *out,
@ -231,9 +231,9 @@ unsigned int arpt_do_table(struct sk_buff **pskb,
struct xt_table_info *private;
/* ARP header, plus 2 device addresses, plus 2 IP addresses. */
if (!pskb_may_pull((*pskb), (sizeof(struct arphdr) +
(2 * (*pskb)->dev->addr_len) +
(2 * sizeof(u32)))))
if (!pskb_may_pull(skb, (sizeof(struct arphdr) +
(2 * skb->dev->addr_len) +
(2 * sizeof(u32)))))
return NF_DROP;
indev = in ? in->name : nulldevname;
@ -245,14 +245,14 @@ unsigned int arpt_do_table(struct sk_buff **pskb,
e = get_entry(table_base, private->hook_entry[hook]);
back = get_entry(table_base, private->underflow[hook]);
arp = arp_hdr(*pskb);
arp = arp_hdr(skb);
do {
if (arp_packet_match(arp, (*pskb)->dev, indev, outdev, &e->arp)) {
if (arp_packet_match(arp, skb->dev, indev, outdev, &e->arp)) {
struct arpt_entry_target *t;
int hdr_len;
hdr_len = sizeof(*arp) + (2 * sizeof(struct in_addr)) +
(2 * (*pskb)->dev->addr_len);
(2 * skb->dev->addr_len);
ADD_COUNTER(e->counters, hdr_len, 1);
t = arpt_get_target(e);
@ -290,14 +290,14 @@ unsigned int arpt_do_table(struct sk_buff **pskb,
/* Targets which reenter must return
* abs. verdicts
*/
verdict = t->u.kernel.target->target(pskb,
verdict = t->u.kernel.target->target(skb,
in, out,
hook,
t->u.kernel.target,
t->data);
/* Target might have changed stuff. */
arp = arp_hdr(*pskb);
arp = arp_hdr(skb);
if (verdict == ARPT_CONTINUE)
e = (void *)e + e->next_offset;

28
net/ipv4/netfilter/arpt_mangle.c
View File

@ -1,5 +1,6 @@
/* module that allows mangling of the arp payload */
#include <linux/module.h>
#include <linux/netfilter.h>
#include <linux/netfilter_arp/arpt_mangle.h>
#include <net/sock.h>
@ -8,7 +9,7 @@ MODULE_AUTHOR("Bart De Schuymer <bdschuym@pandora.be>");
MODULE_DESCRIPTION("arptables arp payload mangle target");
static unsigned int
target(struct sk_buff **pskb,
target(struct sk_buff *skb,
const struct net_device *in, const struct net_device *out,
unsigned int hooknum, const struct xt_target *target,
const void *targinfo)
@ -18,47 +19,38 @@ target(struct sk_buff **pskb,
unsigned char *arpptr;
int pln, hln;
if (skb_shared(*pskb) || skb_cloned(*pskb)) {
struct sk_buff *nskb;
if (skb_make_writable(skb, skb->len))
return NF_DROP;
nskb = skb_copy(*pskb, GFP_ATOMIC);
if (!nskb)
return NF_DROP;
if ((*pskb)->sk)
skb_set_owner_w(nskb, (*pskb)->sk);
kfree_skb(*pskb);
*pskb = nskb;
}
arp = arp_hdr(*pskb);
arpptr = skb_network_header(*pskb) + sizeof(*arp);
arp = arp_hdr(skb);
arpptr = skb_network_header(skb) + sizeof(*arp);
pln = arp->ar_pln;
hln = arp->ar_hln;
/* We assume that pln and hln were checked in the match */
if (mangle->flags & ARPT_MANGLE_SDEV) {
if (ARPT_DEV_ADDR_LEN_MAX < hln ||
(arpptr + hln > skb_tail_pointer(*pskb)))
(arpptr + hln > skb_tail_pointer(skb)))
return NF_DROP;
memcpy(arpptr, mangle->src_devaddr, hln);
}
arpptr += hln;
if (mangle->flags & ARPT_MANGLE_SIP) {
if (ARPT_MANGLE_ADDR_LEN_MAX < pln ||
(arpptr + pln > skb_tail_pointer(*pskb)))
(arpptr + pln > skb_tail_pointer(skb)))
return NF_DROP;
memcpy(arpptr, &mangle->u_s.src_ip, pln);
}
arpptr += pln;
if (mangle->flags & ARPT_MANGLE_TDEV) {
if (ARPT_DEV_ADDR_LEN_MAX < hln ||
(arpptr + hln > skb_tail_pointer(*pskb)))
(arpptr + hln > skb_tail_pointer(skb)))
return NF_DROP;
memcpy(arpptr, mangle->tgt_devaddr, hln);
}
arpptr += hln;
if (mangle->flags & ARPT_MANGLE_TIP) {
if (ARPT_MANGLE_ADDR_LEN_MAX < pln ||
(arpptr + pln > skb_tail_pointer(*pskb)))
(arpptr + pln > skb_tail_pointer(skb)))
return NF_DROP;
memcpy(arpptr, &mangle->u_t.tgt_ip, pln);
}

4
net/ipv4/netfilter/arptable_filter.c
View File

@ -56,12 +56,12 @@ static struct arpt_table packet_filter = {
/* The work comes in here from netfilter.c */
static unsigned int arpt_hook(unsigned int hook,
struct sk_buff **pskb,
struct sk_buff *skb,
const struct net_device *in,
const struct net_device *out,
int (*okfn)(struct sk_buff *))
{
return arpt_do_table(pskb, hook, in, out, &packet_filter);
return arpt_do_table(skb, hook, in, out, &packet_filter);
}
static struct nf_hook_ops arpt_ops[] = {

24
net/ipv4/netfilter/ip_queue.c
View File

@ -335,6 +335,7 @@ static int
ipq_mangle_ipv4(ipq_verdict_msg_t *v, struct ipq_queue_entry *e)
{
int diff;
int err;
struct iphdr *user_iph = (struct iphdr *)v->payload;
if (v->data_len < sizeof(*user_iph))
@ -347,25 +348,18 @@ ipq_mangle_ipv4(ipq_verdict_msg_t *v, struct ipq_queue_entry *e)
if (v->data_len > 0xFFFF)
return -EINVAL;
if (diff > skb_tailroom(e->skb)) {
struct sk_buff *newskb;
newskb = skb_copy_expand(e->skb,
skb_headroom(e->skb),
diff,
GFP_ATOMIC);
if (newskb == NULL) {
printk(KERN_WARNING "ip_queue: OOM "
"in mangle, dropping packet\n");
return -ENOMEM;
err = pskb_expand_head(e->skb, 0,
diff - skb_tailroom(e->skb),
GFP_ATOMIC);
if (err) {
printk(KERN_WARNING "ip_queue: error "
"in mangle, dropping packet: %d\n", -err);
return err;
}
if (e->skb->sk)
skb_set_owner_w(newskb, e->skb->sk);
kfree_skb(e->skb);
e->skb = newskb;
}
skb_put(e->skb, diff);
}
if (!skb_make_writable(&e->skb, v->data_len))
if (!skb_make_writable(e->skb, v->data_len))
return -ENOMEM;
skb_copy_to_linear_data(e->skb, v->payload, v->data_len);
e->skb->ip_summed = CHECKSUM_NONE;

20
net/ipv4/netfilter/ip_tables.c
View File

@ -169,7 +169,7 @@ ip_checkentry(const struct ipt_ip *ip)
}
static unsigned int
ipt_error(struct sk_buff **pskb,
ipt_error(struct sk_buff *skb,
const struct net_device *in,
const struct net_device *out,
unsigned int hooknum,
@ -312,7 +312,7 @@ static void trace_packet(struct sk_buff *skb,
/* Returns one of the generic firewall policies, like NF_ACCEPT. */
unsigned int
ipt_do_table(struct sk_buff **pskb,
ipt_do_table(struct sk_buff *skb,
unsigned int hook,
const struct net_device *in,
const struct net_device *out,
@ -331,8 +331,8 @@ ipt_do_table(struct sk_buff **pskb,
struct xt_table_info *private;
/* Initialization */
ip = ip_hdr(*pskb);
datalen = (*pskb)->len - ip->ihl * 4;
ip = ip_hdr(skb);
datalen = skb->len - ip->ihl * 4;
indev = in ? in->name : nulldevname;
outdev = out ? out->name : nulldevname;
/* We handle fragments by dealing with the first fragment as
@ -359,7 +359,7 @@ ipt_do_table(struct sk_buff **pskb,
struct ipt_entry_target *t;
if (IPT_MATCH_ITERATE(e, do_match,
*pskb, in, out,
skb, in, out,
offset, &hotdrop) != 0)
goto no_match;
@ -371,8 +371,8 @@ ipt_do_table(struct sk_buff **pskb,
#if defined(CONFIG_NETFILTER_XT_TARGET_TRACE) || \
defined(CONFIG_NETFILTER_XT_TARGET_TRACE_MODULE)
/* The packet is traced: log it */
if (unlikely((*pskb)->nf_trace))
trace_packet(*pskb, hook, in, out,
if (unlikely(skb->nf_trace))
trace_packet(skb, hook, in, out,
table->name, private, e);
#endif
/* Standard target? */
@ -410,7 +410,7 @@ ipt_do_table(struct sk_buff **pskb,
((struct ipt_entry *)table_base)->comefrom
= 0xeeeeeeec;
#endif
verdict = t->u.kernel.target->target(pskb,
verdict = t->u.kernel.target->target(skb,
in, out,
hook,
t->u.kernel.target,
@ -428,8 +428,8 @@ ipt_do_table(struct sk_buff **pskb,
= 0x57acc001;
#endif
/* Target might have changed stuff. */
ip = ip_hdr(*pskb);
datalen = (*pskb)->len - ip->ihl * 4;
ip = ip_hdr(skb);
datalen = skb->len - ip->ihl * 4;
if (verdict == IPT_CONTINUE)
e = (void *)e + e->next_offset;

14
net/ipv4/netfilter/ipt_CLUSTERIP.c
View File

@ -289,7 +289,7 @@ clusterip_responsible(const struct clusterip_config *config, u_int32_t hash)
***********************************************************************/
static unsigned int
target(struct sk_buff **pskb,
target(struct sk_buff *skb,
const struct net_device *in,
const struct net_device *out,
unsigned int hooknum,
@ -305,7 +305,7 @@ target(struct sk_buff **pskb,
* is only decremented by destroy() - and ip_tables guarantees
* that the ->target() function isn't called after ->destroy() */
ct = nf_ct_get(*pskb, &ctinfo);
ct = nf_ct_get(skb, &ctinfo);
if (ct == NULL) {
printk(KERN_ERR "CLUSTERIP: no conntrack!\n");
/* FIXME: need to drop invalid ones, since replies
@ -316,7 +316,7 @@ target(struct sk_buff **pskb,
/* special case: ICMP error handling. conntrack distinguishes between
* error messages (RELATED) and information requests (see below) */
if (ip_hdr(*pskb)->protocol == IPPROTO_ICMP
if (ip_hdr(skb)->protocol == IPPROTO_ICMP
&& (ctinfo == IP_CT_RELATED
|| ctinfo == IP_CT_RELATED+IP_CT_IS_REPLY))
return XT_CONTINUE;
@ -325,7 +325,7 @@ target(struct sk_buff **pskb,
* TIMESTAMP, INFO_REQUEST or ADDRESS type icmp packets from here
* on, which all have an ID field [relevant for hashing]. */
hash = clusterip_hashfn(*pskb, cipinfo->config);
hash = clusterip_hashfn(skb, cipinfo->config);
switch (ctinfo) {
case IP_CT_NEW:
@ -355,7 +355,7 @@ target(struct sk_buff **pskb,
/* despite being received via linklayer multicast, this is
* actually a unicast IP packet. TCP doesn't like PACKET_MULTICAST */
(*pskb)->pkt_type = PACKET_HOST;
skb->pkt_type = PACKET_HOST;
return XT_CONTINUE;
}
@ -505,12 +505,12 @@ static void arp_print(struct arp_payload *payload)
static unsigned int
arp_mangle(unsigned int hook,
struct sk_buff **pskb,
struct sk_buff *skb,
const struct net_device *in,
const struct net_device *out,
int (*okfn)(struct sk_buff *))
{
struct arphdr *arp = arp_hdr(*pskb);
struct arphdr *arp = arp_hdr(skb);
struct arp_payload *payload;
struct clusterip_config *c;

27
net/ipv4/netfilter/ipt_ECN.c
View File

@ -26,15 +26,15 @@ MODULE_DESCRIPTION("iptables ECN modification module");
/* set ECT codepoint from IP header.
* return false if there was an error. */
static inline bool
set_ect_ip(struct sk_buff **pskb, const struct ipt_ECN_info *einfo)
set_ect_ip(struct sk_buff *skb, const struct ipt_ECN_info *einfo)
{
struct iphdr *iph = ip_hdr(*pskb);
struct iphdr *iph = ip_hdr(skb);
if ((iph->tos & IPT_ECN_IP_MASK) != (einfo->ip_ect & IPT_ECN_IP_MASK)) {
__u8 oldtos;
if (!skb_make_writable(pskb, sizeof(struct iphdr)))
if (!skb_make_writable(skb, sizeof(struct iphdr)))
return false;
iph = ip_hdr(*pskb);
iph = ip_hdr(skb);
oldtos = iph->tos;
iph->tos &= ~IPT_ECN_IP_MASK;
iph->tos |= (einfo->ip_ect & IPT_ECN_IP_MASK);
@ -45,14 +45,13 @@ set_ect_ip(struct sk_buff **pskb, const struct ipt_ECN_info *einfo)
/* Return false if there was an error. */
static inline bool
set_ect_tcp(struct sk_buff **pskb, const struct ipt_ECN_info *einfo)
set_ect_tcp(struct sk_buff *skb, const struct ipt_ECN_info *einfo)
{
struct tcphdr _tcph, *tcph;
__be16 oldval;
/* Not enought header? */
tcph = skb_header_pointer(*pskb, ip_hdrlen(*pskb),
sizeof(_tcph), &_tcph);
tcph = skb_header_pointer(skb, ip_hdrlen(skb), sizeof(_tcph), &_tcph);
if (!tcph)
return false;
@ -62,9 +61,9 @@ set_ect_tcp(struct sk_buff **pskb, const struct ipt_ECN_info *einfo)
tcph->cwr == einfo->proto.tcp.cwr))
return true;
if (!skb_make_writable(pskb, ip_hdrlen(*pskb) + sizeof(*tcph)))
if (!skb_make_writable(skb, ip_hdrlen(skb) + sizeof(*tcph)))
return false;
tcph = (void *)ip_hdr(*pskb) + ip_hdrlen(*pskb);
tcph = (void *)ip_hdr(skb) + ip_hdrlen(skb);
oldval = ((__be16 *)tcph)[6];
if (einfo->operation & IPT_ECN_OP_SET_ECE)
@ -72,13 +71,13 @@ set_ect_tcp(struct sk_buff **pskb, const struct ipt_ECN_info *einfo)
if (einfo->operation & IPT_ECN_OP_SET_CWR)
tcph->cwr = einfo->proto.tcp.cwr;
nf_proto_csum_replace2(&tcph->check, *pskb,
nf_proto_csum_replace2(&tcph->check, skb,
oldval, ((__be16 *)tcph)[6], 0);
return true;
}
static unsigned int
target(struct sk_buff **pskb,
target(struct sk_buff *skb,
const struct net_device *in,
const struct net_device *out,
unsigned int hooknum,
@ -88,12 +87,12 @@ target(struct sk_buff **pskb,
const struct ipt_ECN_info *einfo = targinfo;
if (einfo->operation & IPT_ECN_OP_SET_IP)
if (!set_ect_ip(pskb, einfo))
if (!set_ect_ip(skb, einfo))
return NF_DROP;
if (einfo->operation & (IPT_ECN_OP_SET_ECE | IPT_ECN_OP_SET_CWR)
&& ip_hdr(*pskb)->protocol == IPPROTO_TCP)
if (!set_ect_tcp(pskb, einfo))
&& ip_hdr(skb)->protocol == IPPROTO_TCP)
if (!set_ect_tcp(skb, einfo))
return NF_DROP;
return XT_CONTINUE;

4
net/ipv4/netfilter/ipt_LOG.c
View File

@ -418,7 +418,7 @@ ipt_log_packet(unsigned int pf,
}
static unsigned int
ipt_log_target(struct sk_buff **pskb,
ipt_log_target(struct sk_buff *skb,
const struct net_device *in,
const struct net_device *out,
unsigned int hooknum,
@ -432,7 +432,7 @@ ipt_log_target(struct sk_buff **pskb,
li.u.log.level = loginfo->level;
li.u.log.logflags = loginfo->logflags;
ipt_log_packet(PF_INET, hooknum, *pskb, in, out, &li,
ipt_log_packet(PF_INET, hooknum, skb, in, out, &li,
loginfo->prefix);
return XT_CONTINUE;
}

6
net/ipv4/netfilter/ipt_MASQUERADE.c
View File

@ -52,7 +52,7 @@ masquerade_check(const char *tablename,
}
static unsigned int
masquerade_target(struct sk_buff **pskb,
masquerade_target(struct sk_buff *skb,
const struct net_device *in,
const struct net_device *out,
unsigned int hooknum,
@ -69,7 +69,7 @@ masquerade_target(struct sk_buff **pskb,
NF_CT_ASSERT(hooknum == NF_IP_POST_ROUTING);
ct = nf_ct_get(*pskb, &ctinfo);
ct = nf_ct_get(skb, &ctinfo);
nat = nfct_nat(ct);
NF_CT_ASSERT(ct && (ctinfo == IP_CT_NEW || ctinfo == IP_CT_RELATED
@ -82,7 +82,7 @@ masquerade_target(struct sk_buff **pskb,
return NF_ACCEPT;
mr = targinfo;
rt = (struct rtable *)(*pskb)->dst;
rt = (struct rtable *)skb->dst;
newsrc = inet_select_addr(out, rt->rt_gateway, RT_SCOPE_UNIVERSE);
if (!newsrc) {
printk("MASQUERADE: %s ate my IP address\n", out->name);

8
net/ipv4/netfilter/ipt_NETMAP.c
View File

@ -43,7 +43,7 @@ check(const char *tablename,
}
static unsigned int
target(struct sk_buff **pskb,
target(struct sk_buff *skb,
const struct net_device *in,
const struct net_device *out,
unsigned int hooknum,
@ -59,14 +59,14 @@ target(struct sk_buff **pskb,
NF_CT_ASSERT(hooknum == NF_IP_PRE_ROUTING
|| hooknum == NF_IP_POST_ROUTING
|| hooknum == NF_IP_LOCAL_OUT);
ct = nf_ct_get(*pskb, &ctinfo);
ct = nf_ct_get(skb, &ctinfo);
netmask = ~(mr->range[0].min_ip ^ mr->range[0].max_ip);
if (hooknum == NF_IP_PRE_ROUTING || hooknum == NF_IP_LOCAL_OUT)
new_ip = ip_hdr(*pskb)->daddr & ~netmask;
new_ip = ip_hdr(skb)->daddr & ~netmask;
else
new_ip = ip_hdr(*pskb)->saddr & ~netmask;
new_ip = ip_hdr(skb)->saddr & ~netmask;
new_ip |= mr->range[0].min_ip & netmask;
newrange = ((struct nf_nat_range)

6
net/ipv4/netfilter/ipt_REDIRECT.c
View File

@ -47,7 +47,7 @@ redirect_check(const char *tablename,
}
static unsigned int
redirect_target(struct sk_buff **pskb,
redirect_target(struct sk_buff *skb,
const struct net_device *in,
const struct net_device *out,
unsigned int hooknum,
@ -63,7 +63,7 @@ redirect_target(struct sk_buff **pskb,
NF_CT_ASSERT(hooknum == NF_IP_PRE_ROUTING
|| hooknum == NF_IP_LOCAL_OUT);
ct = nf_ct_get(*pskb, &ctinfo);
ct = nf_ct_get(skb, &ctinfo);
NF_CT_ASSERT(ct && (ctinfo == IP_CT_NEW || ctinfo == IP_CT_RELATED));
/* Local packets: make them go to loopback */
@ -76,7 +76,7 @@ redirect_target(struct sk_buff **pskb,
newdst = 0;
rcu_read_lock();
indev = __in_dev_get_rcu((*pskb)->dev);
indev = __in_dev_get_rcu(skb->dev);
if (indev && (ifa = indev->ifa_list))
newdst = ifa->ifa_local;
rcu_read_unlock();

22
net/ipv4/netfilter/ipt_REJECT.c
View File

@ -131,7 +131,7 @@ static void send_reset(struct sk_buff *oldskb, int hook)
)
addr_type = RTN_LOCAL;
if (ip_route_me_harder(&nskb, addr_type))
if (ip_route_me_harder(nskb, addr_type))
goto free_nskb;
nskb->ip_summed = CHECKSUM_NONE;
@ -162,7 +162,7 @@ static inline void send_unreach(struct sk_buff *skb_in, int code)
icmp_send(skb_in, ICMP_DEST_UNREACH, code, 0);
}
static unsigned int reject(struct sk_buff **pskb,
static unsigned int reject(struct sk_buff *skb,
const struct net_device *in,
const struct net_device *out,
unsigned int hooknum,
@ -173,7 +173,7 @@ static unsigned int reject(struct sk_buff **pskb,
/* Our naive response construction doesn't deal with IP
options, and probably shouldn't try. */
if (ip_hdrlen(*pskb) != sizeof(struct iphdr))
if (ip_hdrlen(skb) != sizeof(struct iphdr))
return NF_DROP;
/* WARNING: This code causes reentry within iptables.
@ -181,28 +181,28 @@ static unsigned int reject(struct sk_buff **pskb,
must return an absolute verdict. --RR */
switch (reject->with) {
case IPT_ICMP_NET_UNREACHABLE:
send_unreach(*pskb, ICMP_NET_UNREACH);
send_unreach(skb, ICMP_NET_UNREACH);
break;
case IPT_ICMP_HOST_UNREACHABLE:
send_unreach(*pskb, ICMP_HOST_UNREACH);
send_unreach(skb, ICMP_HOST_UNREACH);
break;
case IPT_ICMP_PROT_UNREACHABLE:
send_unreach(*pskb, ICMP_PROT_UNREACH);
send_unreach(skb, ICMP_PROT_UNREACH);
break;
case IPT_ICMP_PORT_UNREACHABLE:
send_unreach(*pskb, ICMP_PORT_UNREACH);
send_unreach(skb, ICMP_PORT_UNREACH);
break;
case IPT_ICMP_NET_PROHIBITED:
send_unreach(*pskb, ICMP_NET_ANO);
send_unreach(skb, ICMP_NET_ANO);
break;
case IPT_ICMP_HOST_PROHIBITED:
send_unreach(*pskb, ICMP_HOST_ANO);
send_unreach(skb, ICMP_HOST_ANO);
break;
case IPT_ICMP_ADMIN_PROHIBITED:
send_unreach(*pskb, ICMP_PKT_FILTERED);
send_unreach(skb, ICMP_PKT_FILTERED);
break;
case IPT_TCP_RESET:
send_reset(*pskb, hooknum);
send_reset(skb, hooknum);
case IPT_ICMP_ECHOREPLY:
/* Doesn't happen. */
break;

4
net/ipv4/netfilter/ipt_SAME.c
View File

@ -104,7 +104,7 @@ same_destroy(const struct xt_target *target, void *targinfo)
}
static unsigned int
same_target(struct sk_buff **pskb,
same_target(struct sk_buff *skb,
const struct net_device *in,
const struct net_device *out,
unsigned int hooknum,
@ -121,7 +121,7 @@ same_target(struct sk_buff **pskb,
NF_CT_ASSERT(hooknum == NF_IP_PRE_ROUTING ||
hooknum == NF_IP_POST_ROUTING);
ct = nf_ct_get(*pskb, &ctinfo);
ct = nf_ct_get(skb, &ctinfo);
t = &ct->tuplehash[IP_CT_DIR_ORIGINAL].tuple;

8
net/ipv4/netfilter/ipt_TOS.c
View File

@ -21,7 +21,7 @@ MODULE_AUTHOR("Netfilter Core Team <coreteam@netfilter.org>");
MODULE_DESCRIPTION("iptables TOS mangling module");
static unsigned int
target(struct sk_buff **pskb,
target(struct sk_buff *skb,
const struct net_device *in,
const struct net_device *out,
unsigned int hooknum,
@ -29,13 +29,13 @@ target(struct sk_buff **pskb,
const void *targinfo)
{
const struct ipt_tos_target_info *tosinfo = targinfo;
struct iphdr *iph = ip_hdr(*pskb);
struct iphdr *iph = ip_hdr(skb);
if ((iph->tos & IPTOS_TOS_MASK) != tosinfo->tos) {
__u8 oldtos;
if (!skb_make_writable(pskb, sizeof(struct iphdr)))
if (!skb_make_writable(skb, sizeof(struct iphdr)))
return NF_DROP;
iph = ip_hdr(*pskb);
iph = ip_hdr(skb);
oldtos = iph->tos;
iph->tos = (iph->tos & IPTOS_PREC_MASK) | tosinfo->tos;
nf_csum_replace2(&iph->check, htons(oldtos), htons(iph->tos));

6
net/ipv4/netfilter/ipt_TTL.c
View File

@ -20,7 +20,7 @@ MODULE_DESCRIPTION("IP tables TTL modification module");
MODULE_LICENSE("GPL");
static unsigned int
ipt_ttl_target(struct sk_buff **pskb,
ipt_ttl_target(struct sk_buff *skb,
const struct net_device *in, const struct net_device *out,
unsigned int hooknum, const struct xt_target *target,
const void *targinfo)
@ -29,10 +29,10 @@ ipt_ttl_target(struct sk_buff **pskb,
const struct ipt_TTL_info *info = targinfo;
int new_ttl;
if (!skb_make_writable(pskb, (*pskb)->len))
if (!skb_make_writable(skb, skb->len))
return NF_DROP;
iph = ip_hdr(*pskb);
iph = ip_hdr(skb);
switch (info->mode) {
case IPT_TTL_SET:

4
net/ipv4/netfilter/ipt_ULOG.c
View File

@ -279,7 +279,7 @@ alloc_failure:
spin_unlock_bh(&ulog_lock);
}
static unsigned int ipt_ulog_target(struct sk_buff **pskb,
static unsigned int ipt_ulog_target(struct sk_buff *skb,
const struct net_device *in,
const struct net_device *out,
unsigned int hooknum,
@ -288,7 +288,7 @@ static unsigned int ipt_ulog_target(struct sk_buff **pskb,
{
struct ipt_ulog_info *loginfo = (struct ipt_ulog_info *) targinfo;
ipt_ulog_packet(hooknum, *pskb, in, out, loginfo, NULL);
ipt_ulog_packet(hooknum, skb, in, out, loginfo, NULL);
return XT_CONTINUE;
}

12
net/ipv4/netfilter/iptable_filter.c
View File

@ -62,31 +62,31 @@ static struct xt_table packet_filter = {
/* The work comes in here from netfilter.c. */
static unsigned int
ipt_hook(unsigned int hook,
struct sk_buff **pskb,
struct sk_buff *skb,
const struct net_device *in,
const struct net_device *out,
int (*okfn)(struct sk_buff *))
{
return ipt_do_table(pskb, hook, in, out, &packet_filter);
return ipt_do_table(skb, hook, in, out, &packet_filter);
}
static unsigned int
ipt_local_out_hook(unsigned int hook,
struct sk_buff **pskb,
struct sk_buff *skb,
const struct net_device *in,
const struct net_device *out,
int (*okfn)(struct sk_buff *))
{
/* root is playing with raw sockets. */
if ((*pskb)->len < sizeof(struct iphdr)
|| ip_hdrlen(*pskb) < sizeof(struct iphdr)) {
if (skb->len < sizeof(struct iphdr) ||
ip_hdrlen(skb) < sizeof(struct iphdr)) {
if (net_ratelimit())
printk("iptable_filter: ignoring short SOCK_RAW "
"packet.\n");
return NF_ACCEPT;
}
return ipt_do_table(pskb, hook, in, out, &packet_filter);
return ipt_do_table(skb, hook, in, out, &packet_filter);
}
static struct nf_hook_ops ipt_ops[] = {

22
net/ipv4/netfilter/iptable_mangle.c
View File

@ -75,17 +75,17 @@ static struct xt_table packet_mangler = {
/* The work comes in here from netfilter.c. */
static unsigned int
ipt_route_hook(unsigned int hook,
struct sk_buff **pskb,
struct sk_buff *skb,
const struct net_device *in,
const struct net_device *out,
int (*okfn)(struct sk_buff *))
{
return ipt_do_table(pskb, hook, in, out, &packet_mangler);
return ipt_do_table(skb, hook, in, out, &packet_mangler);
}
static unsigned int
ipt_local_hook(unsigned int hook,
struct sk_buff **pskb,
struct sk_buff *skb,
const struct net_device *in,
const struct net_device *out,
int (*okfn)(struct sk_buff *))
@ -97,8 +97,8 @@ ipt_local_hook(unsigned int hook,
u_int32_t mark;
/* root is playing with raw sockets. */
if ((*pskb)->len < sizeof(struct iphdr)
|| ip_hdrlen(*pskb) < sizeof(struct iphdr)) {
if (skb->len < sizeof(struct iphdr)
|| ip_hdrlen(skb) < sizeof(struct iphdr)) {
if (net_ratelimit())
printk("iptable_mangle: ignoring short SOCK_RAW "
"packet.\n");
@ -106,22 +106,22 @@ ipt_local_hook(unsigned int hook,
}
/* Save things which could affect route */
mark = (*pskb)->mark;
iph = ip_hdr(*pskb);
mark = skb->mark;
iph = ip_hdr(skb);
saddr = iph->saddr;
daddr = iph->daddr;
tos = iph->tos;
ret = ipt_do_table(pskb, hook, in, out, &packet_mangler);
ret = ipt_do_table(skb, hook, in, out, &packet_mangler);
/* Reroute for ANY change. */
if (ret != NF_DROP && ret != NF_STOLEN && ret != NF_QUEUE) {
iph = ip_hdr(*pskb);
iph = ip_hdr(skb);
if (iph->saddr != saddr ||
iph->daddr != daddr ||
(*pskb)->mark != mark ||
skb->mark != mark ||
iph->tos != tos)
if (ip_route_me_harder(pskb, RTN_UNSPEC))
if (ip_route_me_harder(skb, RTN_UNSPEC))
ret = NF_DROP;
}

12
net/ipv4/netfilter/iptable_raw.c
View File

@ -47,30 +47,30 @@ static struct xt_table packet_raw = {
/* The work comes in here from netfilter.c. */
static unsigned int
ipt_hook(unsigned int hook,
struct sk_buff **pskb,
struct sk_buff *skb,
const struct net_device *in,
const struct net_device *out,
int (*okfn)(struct sk_buff *))
{
return ipt_do_table(pskb, hook, in, out, &packet_raw);
return ipt_do_table(skb, hook, in, out, &packet_raw);
}
static unsigned int
ipt_local_hook(unsigned int hook,
struct sk_buff **pskb,
struct sk_buff *skb,
const struct net_device *in,
const struct net_device *out,
int (*okfn)(struct sk_buff *))
{
/* root is playing with raw sockets. */
if ((*pskb)->len < sizeof(struct iphdr) ||
ip_hdrlen(*pskb) < sizeof(struct iphdr)) {
if (skb->len < sizeof(struct iphdr) ||
ip_hdrlen(skb) < sizeof(struct iphdr)) {
if (net_ratelimit())
printk("iptable_raw: ignoring short SOCK_RAW"
"packet.\n");
return NF_ACCEPT;
}
return ipt_do_table(pskb, hook, in, out, &packet_raw);
return ipt_do_table(skb, hook, in, out, &packet_raw);
}
/* 'raw' is the very first table. */

48
net/ipv4/netfilter/nf_conntrack_l3proto_ipv4.c
View File

@ -63,19 +63,20 @@ static int ipv4_print_conntrack(struct seq_file *s,
}
/* Returns new sk_buff, or NULL */
static struct sk_buff *
nf_ct_ipv4_gather_frags(struct sk_buff *skb, u_int32_t user)
static int nf_ct_ipv4_gather_frags(struct sk_buff *skb, u_int32_t user)
{
int err;
skb_orphan(skb);
local_bh_disable();
skb = ip_defrag(skb, user);
err = ip_defrag(skb, user);
local_bh_enable();
if (skb)
if (!err)
ip_send_check(ip_hdr(skb));
return skb;
return err;
}
static int ipv4_get_l4proto(const struct sk_buff *skb, unsigned int nhoff,
@ -99,17 +100,17 @@ static int ipv4_get_l4proto(const struct sk_buff *skb, unsigned int nhoff,
}
static unsigned int ipv4_confirm(unsigned int hooknum,
struct sk_buff **pskb,
struct sk_buff *skb,
const struct net_device *in,
const struct net_device *out,
int (*okfn)(struct sk_buff *))
{
/* We've seen it coming out the other side: confirm it */
return nf_conntrack_confirm(pskb);
return nf_conntrack_confirm(skb);
}
static unsigned int ipv4_conntrack_help(unsigned int hooknum,
struct sk_buff **pskb,
struct sk_buff *skb,
const struct net_device *in,
const struct net_device *out,
int (*okfn)(struct sk_buff *))
@ -120,7 +121,7 @@ static unsigned int ipv4_conntrack_help(unsigned int hooknum,
struct nf_conntrack_helper *helper;
/* This is where we call the helper: as the packet goes out. */
ct = nf_ct_get(*pskb, &ctinfo);
ct = nf_ct_get(skb, &ctinfo);
if (!ct || ctinfo == IP_CT_RELATED + IP_CT_IS_REPLY)
return NF_ACCEPT;
@ -131,56 +132,55 @@ static unsigned int ipv4_conntrack_help(unsigned int hooknum,
helper = rcu_dereference(help->helper);
if (!helper)
return NF_ACCEPT;
return helper->help(pskb, skb_network_offset(*pskb) + ip_hdrlen(*pskb),
return helper->help(skb, skb_network_offset(skb) + ip_hdrlen(skb),
ct, ctinfo);
}
static unsigned int ipv4_conntrack_defrag(unsigned int hooknum,
struct sk_buff **pskb,
struct sk_buff *skb,
const struct net_device *in,
const struct net_device *out,
int (*okfn)(struct sk_buff *))
{
/* Previously seen (loopback)? Ignore. Do this before
fragment check. */
if ((*pskb)->nfct)
if (skb->nfct)
return NF_ACCEPT;
/* Gather fragments. */
if (ip_hdr(*pskb)->frag_off & htons(IP_MF | IP_OFFSET)) {
*pskb = nf_ct_ipv4_gather_frags(*pskb,
hooknum == NF_IP_PRE_ROUTING ?
IP_DEFRAG_CONNTRACK_IN :
IP_DEFRAG_CONNTRACK_OUT);
if (!*pskb)
if (ip_hdr(skb)->frag_off & htons(IP_MF | IP_OFFSET)) {
if (nf_ct_ipv4_gather_frags(skb,
hooknum == NF_IP_PRE_ROUTING ?
IP_DEFRAG_CONNTRACK_IN :
IP_DEFRAG_CONNTRACK_OUT))
return NF_STOLEN;
}
return NF_ACCEPT;
}
static unsigned int ipv4_conntrack_in(unsigned int hooknum,
struct sk_buff **pskb,
struct sk_buff *skb,
const struct net_device *in,
const struct net_device *out,
int (*okfn)(struct sk_buff *))
{
return nf_conntrack_in(PF_INET, hooknum, pskb);
return nf_conntrack_in(PF_INET, hooknum, skb);
}
static unsigned int ipv4_conntrack_local(unsigned int hooknum,
struct sk_buff **pskb,
struct sk_buff *skb,
const struct net_device *in,
const struct net_device *out,
int (*okfn)(struct sk_buff *))
{
/* root is playing with raw sockets. */
if ((*pskb)->len < sizeof(struct iphdr)
|| ip_hdrlen(*pskb) < sizeof(struct iphdr)) {
if (skb->len < sizeof(struct iphdr) ||
ip_hdrlen(skb) < sizeof(struct iphdr)) {
if (net_ratelimit())
printk("ipt_hook: happy cracking.\n");
return NF_ACCEPT;
}
return nf_conntrack_in(PF_INET, hooknum, pskb);
return nf_conntrack_in(PF_INET, hooknum, skb);
}
/* Connection tracking may drop packets, but never alters them, so

4
net/ipv4/netfilter/nf_nat_amanda.c
View File

@ -24,7 +24,7 @@ MODULE_DESCRIPTION("Amanda NAT helper");
MODULE_LICENSE("GPL");
MODULE_ALIAS("ip_nat_amanda");
static unsigned int help(struct sk_buff **pskb,
static unsigned int help(struct sk_buff *skb,
enum ip_conntrack_info ctinfo,
unsigned int matchoff,
unsigned int matchlen,
@ -53,7 +53,7 @@ static unsigned int help(struct sk_buff **pskb,
return NF_DROP;
sprintf(buffer, "%u", port);
ret = nf_nat_mangle_udp_packet(pskb, exp->master, ctinfo,
ret = nf_nat_mangle_udp_packet(skb, exp->master, ctinfo,
matchoff, matchlen,
buffer, strlen(buffer));
if (ret != NF_ACCEPT)

50
net/ipv4/netfilter/nf_nat_core.c
View File

@ -349,7 +349,7 @@ EXPORT_SYMBOL(nf_nat_setup_info);
/* Returns true if succeeded. */
static int
manip_pkt(u_int16_t proto,
struct sk_buff **pskb,
struct sk_buff *skb,
unsigned int iphdroff,
const struct nf_conntrack_tuple *target,
enum nf_nat_manip_type maniptype)
@ -357,19 +357,19 @@ manip_pkt(u_int16_t proto,
struct iphdr *iph;
struct nf_nat_protocol *p;
if (!skb_make_writable(pskb, iphdroff + sizeof(*iph)))
if (!skb_make_writable(skb, iphdroff + sizeof(*iph)))
return 0;
iph = (void *)(*pskb)->data + iphdroff;
iph = (void *)skb->data + iphdroff;
/* Manipulate protcol part. */
/* rcu_read_lock()ed by nf_hook_slow */
p = __nf_nat_proto_find(proto);
if (!p->manip_pkt(pskb, iphdroff, target, maniptype))
if (!p->manip_pkt(skb, iphdroff, target, maniptype))
return 0;
iph = (void *)(*pskb)->data + iphdroff;
iph = (void *)skb->data + iphdroff;
if (maniptype == IP_NAT_MANIP_SRC) {
nf_csum_replace4(&iph->check, iph->saddr, target->src.u3.ip);
@ -385,7 +385,7 @@ manip_pkt(u_int16_t proto,
unsigned int nf_nat_packet(struct nf_conn *ct,
enum ip_conntrack_info ctinfo,
unsigned int hooknum,
struct sk_buff **pskb)
struct sk_buff *skb)
{
enum ip_conntrack_dir dir = CTINFO2DIR(ctinfo);
unsigned long statusbit;
@ -407,7 +407,7 @@ unsigned int nf_nat_packet(struct nf_conn *ct,
/* We are aiming to look like inverse of other direction. */
nf_ct_invert_tuplepr(&target, &ct->tuplehash[!dir].tuple);
if (!manip_pkt(target.dst.protonum, pskb, 0, &target, mtype))
if (!manip_pkt(target.dst.protonum, skb, 0, &target, mtype))
return NF_DROP;
}
return NF_ACCEPT;
@ -418,7 +418,7 @@ EXPORT_SYMBOL_GPL(nf_nat_packet);
int nf_nat_icmp_reply_translation(struct nf_conn *ct,
enum ip_conntrack_info ctinfo,
unsigned int hooknum,
struct sk_buff **pskb)
struct sk_buff *skb)
{
struct {
struct icmphdr icmp;
@ -426,24 +426,24 @@ int nf_nat_icmp_reply_translation(struct nf_conn *ct,
} *inside;
struct nf_conntrack_l4proto *l4proto;
struct nf_conntrack_tuple inner, target;
int hdrlen = ip_hdrlen(*pskb);
int hdrlen = ip_hdrlen(skb);
enum ip_conntrack_dir dir = CTINFO2DIR(ctinfo);
unsigned long statusbit;
enum nf_nat_manip_type manip = HOOK2MANIP(hooknum);
if (!skb_make_writable(pskb, hdrlen + sizeof(*inside)))
if (!skb_make_writable(skb, hdrlen + sizeof(*inside)))
return 0;
inside = (void *)(*pskb)->data + ip_hdrlen(*pskb);
inside = (void *)skb->data + ip_hdrlen(skb);
/* We're actually going to mangle it beyond trivial checksum
adjustment, so make sure the current checksum is correct. */
if (nf_ip_checksum(*pskb, hooknum, hdrlen, 0))
if (nf_ip_checksum(skb, hooknum, hdrlen, 0))
return 0;
/* Must be RELATED */
NF_CT_ASSERT((*pskb)->nfctinfo == IP_CT_RELATED ||
(*pskb)->nfctinfo == IP_CT_RELATED+IP_CT_IS_REPLY);
NF_CT_ASSERT(skb->nfctinfo == IP_CT_RELATED ||
skb->nfctinfo == IP_CT_RELATED+IP_CT_IS_REPLY);
/* Redirects on non-null nats must be dropped, else they'll
start talking to each other without our translation, and be
@ -458,15 +458,15 @@ int nf_nat_icmp_reply_translation(struct nf_conn *ct,
}
pr_debug("icmp_reply_translation: translating error %p manip %u "
"dir %s\n", *pskb, manip,
"dir %s\n", skb, manip,
dir == IP_CT_DIR_ORIGINAL ? "ORIG" : "REPLY");
/* rcu_read_lock()ed by nf_hook_slow */
l4proto = __nf_ct_l4proto_find(PF_INET, inside->ip.protocol);
if (!nf_ct_get_tuple(*pskb,
ip_hdrlen(*pskb) + sizeof(struct icmphdr),
(ip_hdrlen(*pskb) +
if (!nf_ct_get_tuple(skb,
ip_hdrlen(skb) + sizeof(struct icmphdr),
(ip_hdrlen(skb) +
sizeof(struct icmphdr) + inside->ip.ihl * 4),
(u_int16_t)AF_INET,
inside->ip.protocol,
@ -478,19 +478,19 @@ int nf_nat_icmp_reply_translation(struct nf_conn *ct,
pass all hooks (locally-generated ICMP). Consider incoming
packet: PREROUTING (DST manip), routing produces ICMP, goes
through POSTROUTING (which must correct the DST manip). */
if (!manip_pkt(inside->ip.protocol, pskb,
ip_hdrlen(*pskb) + sizeof(inside->icmp),
if (!manip_pkt(inside->ip.protocol, skb,
ip_hdrlen(skb) + sizeof(inside->icmp),
&ct->tuplehash[!dir].tuple,
!manip))
return 0;
if ((*pskb)->ip_summed != CHECKSUM_PARTIAL) {
if (skb->ip_summed != CHECKSUM_PARTIAL) {
/* Reloading "inside" here since manip_pkt inner. */
inside = (void *)(*pskb)->data + ip_hdrlen(*pskb);
inside = (void *)skb->data + ip_hdrlen(skb);
inside->icmp.checksum = 0;
inside->icmp.checksum =
csum_fold(skb_checksum(*pskb, hdrlen,
(*pskb)->len - hdrlen, 0));
csum_fold(skb_checksum(skb, hdrlen,
skb->len - hdrlen, 0));
}
/* Change outer to look the reply to an incoming packet
@ -506,7 +506,7 @@ int nf_nat_icmp_reply_translation(struct nf_conn *ct,
if (ct->status & statusbit) {
nf_ct_invert_tuplepr(&target, &ct->tuplehash[!dir].tuple);
if (!manip_pkt(0, pskb, 0, &target, manip))
if (!manip_pkt(0, skb, 0, &target, manip))
return 0;
}

18
net/ipv4/netfilter/nf_nat_ftp.c
View File

@ -28,7 +28,7 @@ MODULE_ALIAS("ip_nat_ftp");
/* FIXME: Time out? --RR */
static int
mangle_rfc959_packet(struct sk_buff **pskb,
mangle_rfc959_packet(struct sk_buff *skb,
__be32 newip,
u_int16_t port,
unsigned int matchoff,
@ -43,13 +43,13 @@ mangle_rfc959_packet(struct sk_buff **pskb,
pr_debug("calling nf_nat_mangle_tcp_packet\n");
return nf_nat_mangle_tcp_packet(pskb, ct, ctinfo, matchoff,
return nf_nat_mangle_tcp_packet(skb, ct, ctinfo, matchoff,
matchlen, buffer, strlen(buffer));
}
/* |1|132.235.1.2|6275| */
static int
mangle_eprt_packet(struct sk_buff **pskb,
mangle_eprt_packet(struct sk_buff *skb,
__be32 newip,
u_int16_t port,
unsigned int matchoff,
@ -63,13 +63,13 @@ mangle_eprt_packet(struct sk_buff **pskb,
pr_debug("calling nf_nat_mangle_tcp_packet\n");
return nf_nat_mangle_tcp_packet(pskb, ct, ctinfo, matchoff,
return nf_nat_mangle_tcp_packet(skb, ct, ctinfo, matchoff,
matchlen, buffer, strlen(buffer));
}
/* |1|132.235.1.2|6275| */
static int
mangle_epsv_packet(struct sk_buff **pskb,
mangle_epsv_packet(struct sk_buff *skb,
__be32 newip,
u_int16_t port,
unsigned int matchoff,
@ -83,11 +83,11 @@ mangle_epsv_packet(struct sk_buff **pskb,
pr_debug("calling nf_nat_mangle_tcp_packet\n");
return nf_nat_mangle_tcp_packet(pskb, ct, ctinfo, matchoff,
return nf_nat_mangle_tcp_packet(skb, ct, ctinfo, matchoff,
matchlen, buffer, strlen(buffer));
}
static int (*mangle[])(struct sk_buff **, __be32, u_int16_t,
static int (*mangle[])(struct sk_buff *, __be32, u_int16_t,
unsigned int, unsigned int, struct nf_conn *,
enum ip_conntrack_info)
= {
@ -99,7 +99,7 @@ static int (*mangle[])(struct sk_buff **, __be32, u_int16_t,
/* So, this packet has hit the connection tracking matching code.
Mangle it, and change the expectation to match the new version. */
static unsigned int nf_nat_ftp(struct sk_buff **pskb,
static unsigned int nf_nat_ftp(struct sk_buff *skb,
enum ip_conntrack_info ctinfo,
enum nf_ct_ftp_type type,
unsigned int matchoff,
@ -132,7 +132,7 @@ static unsigned int nf_nat_ftp(struct sk_buff **pskb,
if (port == 0)
return NF_DROP;
if (!mangle[type](pskb, newip, port, matchoff, matchlen, ct, ctinfo)) {
if (!mangle[type](skb, newip, port, matchoff, matchlen, ct, ctinfo)) {
nf_ct_unexpect_related(exp);
return NF_DROP;
}

58
net/ipv4/netfilter/nf_nat_h323.c
View File

@ -22,12 +22,12 @@
#include <linux/netfilter/nf_conntrack_h323.h>
/****************************************************************************/
static int set_addr(struct sk_buff **pskb,
static int set_addr(struct sk_buff *skb,
unsigned char **data, int dataoff,
unsigned int addroff, __be32 ip, __be16 port)
{
enum ip_conntrack_info ctinfo;
struct nf_conn *ct = nf_ct_get(*pskb, &ctinfo);
struct nf_conn *ct = nf_ct_get(skb, &ctinfo);
struct {
__be32 ip;
__be16 port;
@ -38,8 +38,8 @@ static int set_addr(struct sk_buff **pskb,
buf.port = port;
addroff += dataoff;
if (ip_hdr(*pskb)->protocol == IPPROTO_TCP) {
if (!nf_nat_mangle_tcp_packet(pskb, ct, ctinfo,
if (ip_hdr(skb)->protocol == IPPROTO_TCP) {
if (!nf_nat_mangle_tcp_packet(skb, ct, ctinfo,
addroff, sizeof(buf),
(char *) &buf, sizeof(buf))) {
if (net_ratelimit())
@ -49,14 +49,13 @@ static int set_addr(struct sk_buff **pskb,
}
/* Relocate data pointer */
th = skb_header_pointer(*pskb, ip_hdrlen(*pskb),
th = skb_header_pointer(skb, ip_hdrlen(skb),
sizeof(_tcph), &_tcph);
if (th == NULL)
return -1;
*data = (*pskb)->data + ip_hdrlen(*pskb) +
th->doff * 4 + dataoff;
*data = skb->data + ip_hdrlen(skb) + th->doff * 4 + dataoff;
} else {
if (!nf_nat_mangle_udp_packet(pskb, ct, ctinfo,
if (!nf_nat_mangle_udp_packet(skb, ct, ctinfo,
addroff, sizeof(buf),
(char *) &buf, sizeof(buf))) {
if (net_ratelimit())
@ -67,36 +66,35 @@ static int set_addr(struct sk_buff **pskb,
/* nf_nat_mangle_udp_packet uses skb_make_writable() to copy
* or pull everything in a linear buffer, so we can safely
* use the skb pointers now */
*data = ((*pskb)->data + ip_hdrlen(*pskb) +
sizeof(struct udphdr));
*data = skb->data + ip_hdrlen(skb) + sizeof(struct udphdr);
}
return 0;
}
/****************************************************************************/
static int set_h225_addr(struct sk_buff **pskb,
static int set_h225_addr(struct sk_buff *skb,
unsigned char **data, int dataoff,
TransportAddress *taddr,
union nf_conntrack_address *addr, __be16 port)
{
return set_addr(pskb, data, dataoff, taddr->ipAddress.ip,
return set_addr(skb, data, dataoff, taddr->ipAddress.ip,
addr->ip, port);
}
/****************************************************************************/
static int set_h245_addr(struct sk_buff **pskb,
static int set_h245_addr(struct sk_buff *skb,
unsigned char **data, int dataoff,
H245_TransportAddress *taddr,
union nf_conntrack_address *addr, __be16 port)
{
return set_addr(pskb, data, dataoff,
return set_addr(skb, data, dataoff,
taddr->unicastAddress.iPAddress.network,
addr->ip, port);
}
/****************************************************************************/
static int set_sig_addr(struct sk_buff **pskb, struct nf_conn *ct,
static int set_sig_addr(struct sk_buff *skb, struct nf_conn *ct,
enum ip_conntrack_info ctinfo,
unsigned char **data,
TransportAddress *taddr, int count)
@ -125,7 +123,7 @@ static int set_sig_addr(struct sk_buff **pskb, struct nf_conn *ct,
NIPQUAD(addr.ip), port,
NIPQUAD(ct->tuplehash[!dir].tuple.dst.u3.ip),
info->sig_port[!dir]);
return set_h225_addr(pskb, data, 0, &taddr[i],
return set_h225_addr(skb, data, 0, &taddr[i],
&ct->tuplehash[!dir].
tuple.dst.u3,
info->sig_port[!dir]);
@ -137,7 +135,7 @@ static int set_sig_addr(struct sk_buff **pskb, struct nf_conn *ct,
NIPQUAD(addr.ip), port,
NIPQUAD(ct->tuplehash[!dir].tuple.src.u3.ip),
info->sig_port[!dir]);
return set_h225_addr(pskb, data, 0, &taddr[i],
return set_h225_addr(skb, data, 0, &taddr[i],
&ct->tuplehash[!dir].
tuple.src.u3,
info->sig_port[!dir]);
@ -149,7 +147,7 @@ static int set_sig_addr(struct sk_buff **pskb, struct nf_conn *ct,
}
/****************************************************************************/
static int set_ras_addr(struct sk_buff **pskb, struct nf_conn *ct,
static int set_ras_addr(struct sk_buff *skb, struct nf_conn *ct,
enum ip_conntrack_info ctinfo,
unsigned char **data,
TransportAddress *taddr, int count)
@ -168,7 +166,7 @@ static int set_ras_addr(struct sk_buff **pskb, struct nf_conn *ct,
NIPQUAD(addr.ip), ntohs(port),
NIPQUAD(ct->tuplehash[!dir].tuple.dst.u3.ip),
ntohs(ct->tuplehash[!dir].tuple.dst.u.udp.port));
return set_h225_addr(pskb, data, 0, &taddr[i],
return set_h225_addr(skb, data, 0, &taddr[i],
&ct->tuplehash[!dir].tuple.dst.u3,
ct->tuplehash[!dir].tuple.
dst.u.udp.port);
@ -179,7 +177,7 @@ static int set_ras_addr(struct sk_buff **pskb, struct nf_conn *ct,
}
/****************************************************************************/
static int nat_rtp_rtcp(struct sk_buff **pskb, struct nf_conn *ct,
static int nat_rtp_rtcp(struct sk_buff *skb, struct nf_conn *ct,
enum ip_conntrack_info ctinfo,
unsigned char **data, int dataoff,
H245_TransportAddress *taddr,
@ -244,7 +242,7 @@ static int nat_rtp_rtcp(struct sk_buff **pskb, struct nf_conn *ct,
}
/* Modify signal */
if (set_h245_addr(pskb, data, dataoff, taddr,
if (set_h245_addr(skb, data, dataoff, taddr,
&ct->tuplehash[!dir].tuple.dst.u3,
htons((port & htons(1)) ? nated_port + 1 :
nated_port)) == 0) {
@ -273,7 +271,7 @@ static int nat_rtp_rtcp(struct sk_buff **pskb, struct nf_conn *ct,
}
/****************************************************************************/
static int nat_t120(struct sk_buff **pskb, struct nf_conn *ct,
static int nat_t120(struct sk_buff *skb, struct nf_conn *ct,
enum ip_conntrack_info ctinfo,
unsigned char **data, int dataoff,
H245_TransportAddress *taddr, __be16 port,
@ -301,7 +299,7 @@ static int nat_t120(struct sk_buff **pskb, struct nf_conn *ct,
}
/* Modify signal */
if (set_h245_addr(pskb, data, dataoff, taddr,
if (set_h245_addr(skb, data, dataoff, taddr,
&ct->tuplehash[!dir].tuple.dst.u3,
htons(nated_port)) < 0) {
nf_ct_unexpect_related(exp);
@ -318,7 +316,7 @@ static int nat_t120(struct sk_buff **pskb, struct nf_conn *ct,
}
/****************************************************************************/
static int nat_h245(struct sk_buff **pskb, struct nf_conn *ct,
static int nat_h245(struct sk_buff *skb, struct nf_conn *ct,
enum ip_conntrack_info ctinfo,
unsigned char **data, int dataoff,
TransportAddress *taddr, __be16 port,
@ -351,7 +349,7 @@ static int nat_h245(struct sk_buff **pskb, struct nf_conn *ct,
}
/* Modify signal */
if (set_h225_addr(pskb, data, dataoff, taddr,
if (set_h225_addr(skb, data, dataoff, taddr,
&ct->tuplehash[!dir].tuple.dst.u3,
htons(nated_port)) == 0) {
/* Save ports */
@ -406,7 +404,7 @@ static void ip_nat_q931_expect(struct nf_conn *new,
}
/****************************************************************************/
static int nat_q931(struct sk_buff **pskb, struct nf_conn *ct,
static int nat_q931(struct sk_buff *skb, struct nf_conn *ct,
enum ip_conntrack_info ctinfo,
unsigned char **data, TransportAddress *taddr, int idx,
__be16 port, struct nf_conntrack_expect *exp)
@ -439,7 +437,7 @@ static int nat_q931(struct sk_buff **pskb, struct nf_conn *ct,
}
/* Modify signal */
if (set_h225_addr(pskb, data, 0, &taddr[idx],
if (set_h225_addr(skb, data, 0, &taddr[idx],
&ct->tuplehash[!dir].tuple.dst.u3,
htons(nated_port)) == 0) {
/* Save ports */
@ -450,7 +448,7 @@ static int nat_q931(struct sk_buff **pskb, struct nf_conn *ct,
if (idx > 0 &&
get_h225_addr(ct, *data, &taddr[0], &addr, &port) &&
(ntohl(addr.ip) & 0xff000000) == 0x7f000000) {
set_h225_addr(pskb, data, 0, &taddr[0],
set_h225_addr(skb, data, 0, &taddr[0],
&ct->tuplehash[!dir].tuple.dst.u3,
info->sig_port[!dir]);
}
@ -495,7 +493,7 @@ static void ip_nat_callforwarding_expect(struct nf_conn *new,
}
/****************************************************************************/
static int nat_callforwarding(struct sk_buff **pskb, struct nf_conn *ct,
static int nat_callforwarding(struct sk_buff *skb, struct nf_conn *ct,
enum ip_conntrack_info ctinfo,
unsigned char **data, int dataoff,
TransportAddress *taddr, __be16 port,
@ -525,7 +523,7 @@ static int nat_callforwarding(struct sk_buff **pskb, struct nf_conn *ct,
}
/* Modify signal */
if (!set_h225_addr(pskb, data, dataoff, taddr,
if (!set_h225_addr(skb, data, dataoff, taddr,
&ct->tuplehash[!dir].tuple.dst.u3,
htons(nated_port)) == 0) {
nf_ct_unexpect_related(exp);

118
net/ipv4/netfilter/nf_nat_helper.c
View File

@ -111,22 +111,14 @@ static void mangle_contents(struct sk_buff *skb,
}
/* Unusual, but possible case. */
static int enlarge_skb(struct sk_buff **pskb, unsigned int extra)
static int enlarge_skb(struct sk_buff *skb, unsigned int extra)
{
struct sk_buff *nskb;
if ((*pskb)->len + extra > 65535)
if (skb->len + extra > 65535)
return 0;
nskb = skb_copy_expand(*pskb, skb_headroom(*pskb), extra, GFP_ATOMIC);
if (!nskb)
if (pskb_expand_head(skb, 0, extra - skb_tailroom(skb), GFP_ATOMIC))
return 0;
/* Transfer socket to new skb. */
if ((*pskb)->sk)
skb_set_owner_w(nskb, (*pskb)->sk);
kfree_skb(*pskb);
*pskb = nskb;
return 1;
}
@ -139,7 +131,7 @@ static int enlarge_skb(struct sk_buff **pskb, unsigned int extra)
*
* */
int
nf_nat_mangle_tcp_packet(struct sk_buff **pskb,
nf_nat_mangle_tcp_packet(struct sk_buff *skb,
struct nf_conn *ct,
enum ip_conntrack_info ctinfo,
unsigned int match_offset,
@ -147,37 +139,37 @@ nf_nat_mangle_tcp_packet(struct sk_buff **pskb,
const char *rep_buffer,
unsigned int rep_len)
{
struct rtable *rt = (struct rtable *)(*pskb)->dst;
struct rtable *rt = (struct rtable *)skb->dst;
struct iphdr *iph;
struct tcphdr *tcph;
int oldlen, datalen;
if (!skb_make_writable(pskb, (*pskb)->len))
if (!skb_make_writable(skb, skb->len))
return 0;
if (rep_len > match_len &&
rep_len - match_len > skb_tailroom(*pskb) &&
!enlarge_skb(pskb, rep_len - match_len))
rep_len - match_len > skb_tailroom(skb) &&
!enlarge_skb(skb, rep_len - match_len))
return 0;
SKB_LINEAR_ASSERT(*pskb);
SKB_LINEAR_ASSERT(skb);
iph = ip_hdr(*pskb);
iph = ip_hdr(skb);
tcph = (void *)iph + iph->ihl*4;
oldlen = (*pskb)->len - iph->ihl*4;
mangle_contents(*pskb, iph->ihl*4 + tcph->doff*4,
oldlen = skb->len - iph->ihl*4;
mangle_contents(skb, iph->ihl*4 + tcph->doff*4,
match_offset, match_len, rep_buffer, rep_len);
datalen = (*pskb)->len - iph->ihl*4;
if ((*pskb)->ip_summed != CHECKSUM_PARTIAL) {
datalen = skb->len - iph->ihl*4;
if (skb->ip_summed != CHECKSUM_PARTIAL) {
if (!(rt->rt_flags & RTCF_LOCAL) &&
(*pskb)->dev->features & NETIF_F_V4_CSUM) {
(*pskb)->ip_summed = CHECKSUM_PARTIAL;
(*pskb)->csum_start = skb_headroom(*pskb) +
skb_network_offset(*pskb) +
iph->ihl * 4;
(*pskb)->csum_offset = offsetof(struct tcphdr, check);
skb->dev->features & NETIF_F_V4_CSUM) {
skb->ip_summed = CHECKSUM_PARTIAL;
skb->csum_start = skb_headroom(skb) +
skb_network_offset(skb) +
iph->ihl * 4;
skb->csum_offset = offsetof(struct tcphdr, check);
tcph->check = ~tcp_v4_check(datalen,
iph->saddr, iph->daddr, 0);
} else {
@ -188,7 +180,7 @@ nf_nat_mangle_tcp_packet(struct sk_buff **pskb,
datalen, 0));
}
} else
nf_proto_csum_replace2(&tcph->check, *pskb,
nf_proto_csum_replace2(&tcph->check, skb,
htons(oldlen), htons(datalen), 1);
if (rep_len != match_len) {
@ -197,7 +189,7 @@ nf_nat_mangle_tcp_packet(struct sk_buff **pskb,
(int)rep_len - (int)match_len,
ct, ctinfo);
/* Tell TCP window tracking about seq change */
nf_conntrack_tcp_update(*pskb, ip_hdrlen(*pskb),
nf_conntrack_tcp_update(skb, ip_hdrlen(skb),
ct, CTINFO2DIR(ctinfo));
}
return 1;
@ -215,7 +207,7 @@ EXPORT_SYMBOL(nf_nat_mangle_tcp_packet);
* should be fairly easy to do.
*/
int
nf_nat_mangle_udp_packet(struct sk_buff **pskb,
nf_nat_mangle_udp_packet(struct sk_buff *skb,
struct nf_conn *ct,
enum ip_conntrack_info ctinfo,
unsigned int match_offset,
@ -223,48 +215,48 @@ nf_nat_mangle_udp_packet(struct sk_buff **pskb,
const char *rep_buffer,
unsigned int rep_len)
{
struct rtable *rt = (struct rtable *)(*pskb)->dst;
struct rtable *rt = (struct rtable *)skb->dst;
struct iphdr *iph;
struct udphdr *udph;
int datalen, oldlen;
/* UDP helpers might accidentally mangle the wrong packet */
iph = ip_hdr(*pskb);
if ((*pskb)->len < iph->ihl*4 + sizeof(*udph) +
iph = ip_hdr(skb);
if (skb->len < iph->ihl*4 + sizeof(*udph) +
match_offset + match_len)
return 0;
if (!skb_make_writable(pskb, (*pskb)->len))
if (!skb_make_writable(skb, skb->len))
return 0;
if (rep_len > match_len &&
rep_len - match_len > skb_tailroom(*pskb) &&
!enlarge_skb(pskb, rep_len - match_len))
rep_len - match_len > skb_tailroom(skb) &&
!enlarge_skb(skb, rep_len - match_len))
return 0;
iph = ip_hdr(*pskb);
iph = ip_hdr(skb);
udph = (void *)iph + iph->ihl*4;
oldlen = (*pskb)->len - iph->ihl*4;
mangle_contents(*pskb, iph->ihl*4 + sizeof(*udph),
oldlen = skb->len - iph->ihl*4;
mangle_contents(skb, iph->ihl*4 + sizeof(*udph),
match_offset, match_len, rep_buffer, rep_len);
/* update the length of the UDP packet */
datalen = (*pskb)->len - iph->ihl*4;
datalen = skb->len - iph->ihl*4;
udph->len = htons(datalen);
/* fix udp checksum if udp checksum was previously calculated */
if (!udph->check && (*pskb)->ip_summed != CHECKSUM_PARTIAL)
if (!udph->check && skb->ip_summed != CHECKSUM_PARTIAL)
return 1;
if ((*pskb)->ip_summed != CHECKSUM_PARTIAL) {
if (skb->ip_summed != CHECKSUM_PARTIAL) {
if (!(rt->rt_flags & RTCF_LOCAL) &&
(*pskb)->dev->features & NETIF_F_V4_CSUM) {
(*pskb)->ip_summed = CHECKSUM_PARTIAL;
(*pskb)->csum_start = skb_headroom(*pskb) +
skb_network_offset(*pskb) +
iph->ihl * 4;
(*pskb)->csum_offset = offsetof(struct udphdr, check);
skb->dev->features & NETIF_F_V4_CSUM) {
skb->ip_summed = CHECKSUM_PARTIAL;
skb->csum_start = skb_headroom(skb) +
skb_network_offset(skb) +
iph->ihl * 4;
skb->csum_offset = offsetof(struct udphdr, check);
udph->check = ~csum_tcpudp_magic(iph->saddr, iph->daddr,
datalen, IPPROTO_UDP,
0);
@ -278,7 +270,7 @@ nf_nat_mangle_udp_packet(struct sk_buff **pskb,
udph->check = CSUM_MANGLED_0;
}
} else
nf_proto_csum_replace2(&udph->check, *pskb,
nf_proto_csum_replace2(&udph->check, skb,
htons(oldlen), htons(datalen), 1);
return 1;
@ -330,7 +322,7 @@ sack_adjust(struct sk_buff *skb,
/* TCP SACK sequence number adjustment */
static inline unsigned int
nf_nat_sack_adjust(struct sk_buff **pskb,
nf_nat_sack_adjust(struct sk_buff *skb,
struct tcphdr *tcph,
struct nf_conn *ct,
enum ip_conntrack_info ctinfo)
@ -338,17 +330,17 @@ nf_nat_sack_adjust(struct sk_buff **pskb,
unsigned int dir, optoff, optend;
struct nf_conn_nat *nat = nfct_nat(ct);
optoff = ip_hdrlen(*pskb) + sizeof(struct tcphdr);
optend = ip_hdrlen(*pskb) + tcph->doff * 4;
optoff = ip_hdrlen(skb) + sizeof(struct tcphdr);
optend = ip_hdrlen(skb) + tcph->doff * 4;
if (!skb_make_writable(pskb, optend))
if (!skb_make_writable(skb, optend))
return 0;
dir = CTINFO2DIR(ctinfo);
while (optoff < optend) {
/* Usually: option, length. */
unsigned char *op = (*pskb)->data + optoff;
unsigned char *op = skb->data + optoff;
switch (op[0]) {
case TCPOPT_EOL:
@ -365,7 +357,7 @@ nf_nat_sack_adjust(struct sk_buff **pskb,
if (op[0] == TCPOPT_SACK &&
op[1] >= 2+TCPOLEN_SACK_PERBLOCK &&
((op[1] - 2) % TCPOLEN_SACK_PERBLOCK) == 0)
sack_adjust(*pskb, tcph, optoff+2,
sack_adjust(skb, tcph, optoff+2,
optoff+op[1], &nat->seq[!dir]);
optoff += op[1];
}
@ -375,7 +367,7 @@ nf_nat_sack_adjust(struct sk_buff **pskb,
/* TCP sequence number adjustment. Returns 1 on success, 0 on failure */
int
nf_nat_seq_adjust(struct sk_buff **pskb,
nf_nat_seq_adjust(struct sk_buff *skb,
struct nf_conn *ct,
enum ip_conntrack_info ctinfo)
{
@ -390,10 +382,10 @@ nf_nat_seq_adjust(struct sk_buff **pskb,
this_way = &nat->seq[dir];
other_way = &nat->seq[!dir];
if (!skb_make_writable(pskb, ip_hdrlen(*pskb) + sizeof(*tcph)))
if (!skb_make_writable(skb, ip_hdrlen(skb) + sizeof(*tcph)))
return 0;
tcph = (void *)(*pskb)->data + ip_hdrlen(*pskb);
tcph = (void *)skb->data + ip_hdrlen(skb);
if (after(ntohl(tcph->seq), this_way->correction_pos))
newseq = htonl(ntohl(tcph->seq) + this_way->offset_after);
else
@ -405,8 +397,8 @@ nf_nat_seq_adjust(struct sk_buff **pskb,
else
newack = htonl(ntohl(tcph->ack_seq) - other_way->offset_before);
nf_proto_csum_replace4(&tcph->check, *pskb, tcph->seq, newseq, 0);
nf_proto_csum_replace4(&tcph->check, *pskb, tcph->ack_seq, newack, 0);
nf_proto_csum_replace4(&tcph->check, skb, tcph->seq, newseq, 0);
nf_proto_csum_replace4(&tcph->check, skb, tcph->ack_seq, newack, 0);
pr_debug("Adjusting sequence number from %u->%u, ack from %u->%u\n",
ntohl(tcph->seq), ntohl(newseq), ntohl(tcph->ack_seq),
@ -415,10 +407,10 @@ nf_nat_seq_adjust(struct sk_buff **pskb,
tcph->seq = newseq;
tcph->ack_seq = newack;
if (!nf_nat_sack_adjust(pskb, tcph, ct, ctinfo))
if (!nf_nat_sack_adjust(skb, tcph, ct, ctinfo))
return 0;
nf_conntrack_tcp_update(*pskb, ip_hdrlen(*pskb), ct, dir);
nf_conntrack_tcp_update(skb, ip_hdrlen(skb), ct, dir);
return 1;
}

4
net/ipv4/netfilter/nf_nat_irc.c
View File

@ -27,7 +27,7 @@ MODULE_DESCRIPTION("IRC (DCC) NAT helper");
MODULE_LICENSE("GPL");
MODULE_ALIAS("ip_nat_irc");
static unsigned int help(struct sk_buff **pskb,
static unsigned int help(struct sk_buff *skb,
enum ip_conntrack_info ctinfo,
unsigned int matchoff,
unsigned int matchlen,
@ -58,7 +58,7 @@ static unsigned int help(struct sk_buff **pskb,
pr_debug("nf_nat_irc: inserting '%s' == %u.%u.%u.%u, port %u\n",
buffer, NIPQUAD(ip), port);
ret = nf_nat_mangle_tcp_packet(pskb, exp->master, ctinfo,
ret = nf_nat_mangle_tcp_packet(skb, exp->master, ctinfo,
matchoff, matchlen, buffer,
strlen(buffer));
if (ret != NF_ACCEPT)

8
net/ipv4/netfilter/nf_nat_pptp.c
View File

@ -110,7 +110,7 @@ static void pptp_nat_expected(struct nf_conn *ct,
/* outbound packets == from PNS to PAC */
static int
pptp_outbound_pkt(struct sk_buff **pskb,
pptp_outbound_pkt(struct sk_buff *skb,
struct nf_conn *ct,
enum ip_conntrack_info ctinfo,
struct PptpControlHeader *ctlh,
@ -175,7 +175,7 @@ pptp_outbound_pkt(struct sk_buff **pskb,
ntohs(REQ_CID(pptpReq, cid_off)), ntohs(new_callid));
/* mangle packet */
if (nf_nat_mangle_tcp_packet(pskb, ct, ctinfo,
if (nf_nat_mangle_tcp_packet(skb, ct, ctinfo,
cid_off + sizeof(struct pptp_pkt_hdr) +
sizeof(struct PptpControlHeader),
sizeof(new_callid), (char *)&new_callid,
@ -213,7 +213,7 @@ pptp_exp_gre(struct nf_conntrack_expect *expect_orig,
/* inbound packets == from PAC to PNS */
static int
pptp_inbound_pkt(struct sk_buff **pskb,
pptp_inbound_pkt(struct sk_buff *skb,
struct nf_conn *ct,
enum ip_conntrack_info ctinfo,
struct PptpControlHeader *ctlh,
@ -268,7 +268,7 @@ pptp_inbound_pkt(struct sk_buff **pskb,
pr_debug("altering peer call id from 0x%04x to 0x%04x\n",
ntohs(REQ_CID(pptpReq, pcid_off)), ntohs(new_pcid));
if (nf_nat_mangle_tcp_packet(pskb, ct, ctinfo,
if (nf_nat_mangle_tcp_packet(skb, ct, ctinfo,
pcid_off + sizeof(struct pptp_pkt_hdr) +
sizeof(struct PptpControlHeader),
sizeof(new_pcid), (char *)&new_pcid,

8
net/ipv4/netfilter/nf_nat_proto_gre.c
View File

@ -98,21 +98,21 @@ gre_unique_tuple(struct nf_conntrack_tuple *tuple,
/* manipulate a GRE packet according to maniptype */
static int
gre_manip_pkt(struct sk_buff **pskb, unsigned int iphdroff,
gre_manip_pkt(struct sk_buff *skb, unsigned int iphdroff,
const struct nf_conntrack_tuple *tuple,
enum nf_nat_manip_type maniptype)
{
struct gre_hdr *greh;
struct gre_hdr_pptp *pgreh;
struct iphdr *iph = (struct iphdr *)((*pskb)->data + iphdroff);
struct iphdr *iph = (struct iphdr *)(skb->data + iphdroff);
unsigned int hdroff = iphdroff + iph->ihl * 4;
/* pgreh includes two optional 32bit fields which are not required
* to be there. That's where the magic '8' comes from */
if (!skb_make_writable(pskb, hdroff + sizeof(*pgreh) - 8))
if (!skb_make_writable(skb, hdroff + sizeof(*pgreh) - 8))
return 0;
greh = (void *)(*pskb)->data + hdroff;
greh = (void *)skb->data + hdroff;
pgreh = (struct gre_hdr_pptp *)greh;
/* we only have destination manip of a packet, since 'source key'

10
net/ipv4/netfilter/nf_nat_proto_icmp.c
View File

@ -52,20 +52,20 @@ icmp_unique_tuple(struct nf_conntrack_tuple *tuple,
}
static int
icmp_manip_pkt(struct sk_buff **pskb,
icmp_manip_pkt(struct sk_buff *skb,
unsigned int iphdroff,
const struct nf_conntrack_tuple *tuple,
enum nf_nat_manip_type maniptype)
{
struct iphdr *iph = (struct iphdr *)((*pskb)->data + iphdroff);
struct iphdr *iph = (struct iphdr *)(skb->data + iphdroff);
struct icmphdr *hdr;
unsigned int hdroff = iphdroff + iph->ihl*4;
if (!skb_make_writable(pskb, hdroff + sizeof(*hdr)))
if (!skb_make_writable(skb, hdroff + sizeof(*hdr)))
return 0;
hdr = (struct icmphdr *)((*pskb)->data + hdroff);
nf_proto_csum_replace2(&hdr->checksum, *pskb,
hdr = (struct icmphdr *)(skb->data + hdroff);
nf_proto_csum_replace2(&hdr->checksum, skb,
hdr->un.echo.id, tuple->src.u.icmp.id, 0);
hdr->un.echo.id = tuple->src.u.icmp.id;
return 1;

16
net/ipv4/netfilter/nf_nat_proto_tcp.c
View File

@ -88,12 +88,12 @@ tcp_unique_tuple(struct nf_conntrack_tuple *tuple,
}
static int
tcp_manip_pkt(struct sk_buff **pskb,
tcp_manip_pkt(struct sk_buff *skb,
unsigned int iphdroff,
const struct nf_conntrack_tuple *tuple,
enum nf_nat_manip_type maniptype)
{
struct iphdr *iph = (struct iphdr *)((*pskb)->data + iphdroff);
struct iphdr *iph = (struct iphdr *)(skb->data + iphdroff);
struct tcphdr *hdr;
unsigned int hdroff = iphdroff + iph->ihl*4;
__be32 oldip, newip;
@ -103,14 +103,14 @@ tcp_manip_pkt(struct sk_buff **pskb,
/* this could be a inner header returned in icmp packet; in such
cases we cannot update the checksum field since it is outside of
the 8 bytes of transport layer headers we are guaranteed */
if ((*pskb)->len >= hdroff + sizeof(struct tcphdr))
if (skb->len >= hdroff + sizeof(struct tcphdr))
hdrsize = sizeof(struct tcphdr);
if (!skb_make_writable(pskb, hdroff + hdrsize))
if (!skb_make_writable(skb, hdroff + hdrsize))
return 0;
iph = (struct iphdr *)((*pskb)->data + iphdroff);
hdr = (struct tcphdr *)((*pskb)->data + hdroff);
iph = (struct iphdr *)(skb->data + iphdroff);
hdr = (struct tcphdr *)(skb->data + hdroff);
if (maniptype == IP_NAT_MANIP_SRC) {
/* Get rid of src ip and src pt */
@ -132,8 +132,8 @@ tcp_manip_pkt(struct sk_buff **pskb,
if (hdrsize < sizeof(*hdr))
return 1;
nf_proto_csum_replace4(&hdr->check, *pskb, oldip, newip, 1);
nf_proto_csum_replace2(&hdr->check, *pskb, oldport, newport, 0);
nf_proto_csum_replace4(&hdr->check, skb, oldip, newip, 1);
nf_proto_csum_replace2(&hdr->check, skb, oldport, newport, 0);
return 1;
}

16
net/ipv4/netfilter/nf_nat_proto_udp.c
View File

@ -86,22 +86,22 @@ udp_unique_tuple(struct nf_conntrack_tuple *tuple,
}
static int
udp_manip_pkt(struct sk_buff **pskb,
udp_manip_pkt(struct sk_buff *skb,
unsigned int iphdroff,
const struct nf_conntrack_tuple *tuple,
enum nf_nat_manip_type maniptype)
{
struct iphdr *iph = (struct iphdr *)((*pskb)->data + iphdroff);
struct iphdr *iph = (struct iphdr *)(skb->data + iphdroff);
struct udphdr *hdr;
unsigned int hdroff = iphdroff + iph->ihl*4;
__be32 oldip, newip;
__be16 *portptr, newport;
if (!skb_make_writable(pskb, hdroff + sizeof(*hdr)))
if (!skb_make_writable(skb, hdroff + sizeof(*hdr)))
return 0;
iph = (struct iphdr *)((*pskb)->data + iphdroff);
hdr = (struct udphdr *)((*pskb)->data + hdroff);
iph = (struct iphdr *)(skb->data + iphdroff);
hdr = (struct udphdr *)(skb->data + hdroff);
if (maniptype == IP_NAT_MANIP_SRC) {
/* Get rid of src ip and src pt */
@ -116,9 +116,9 @@ udp_manip_pkt(struct sk_buff **pskb,
newport = tuple->dst.u.udp.port;
portptr = &hdr->dest;
}
if (hdr->check || (*pskb)->ip_summed == CHECKSUM_PARTIAL) {
nf_proto_csum_replace4(&hdr->check, *pskb, oldip, newip, 1);
nf_proto_csum_replace2(&hdr->check, *pskb, *portptr, newport,
if (hdr->check || skb->ip_summed == CHECKSUM_PARTIAL) {
nf_proto_csum_replace4(&hdr->check, skb, oldip, newip, 1);
nf_proto_csum_replace2(&hdr->check, skb, *portptr, newport,
0);
if (!hdr->check)
hdr->check = CSUM_MANGLED_0;

2
net/ipv4/netfilter/nf_nat_proto_unknown.c
View File

@ -37,7 +37,7 @@ static int unknown_unique_tuple(struct nf_conntrack_tuple *tuple,
}
static int
unknown_manip_pkt(struct sk_buff **pskb,
unknown_manip_pkt(struct sk_buff *skb,
unsigned int iphdroff,
const struct nf_conntrack_tuple *tuple,
enum nf_nat_manip_type maniptype)

14
net/ipv4/netfilter/nf_nat_rule.c
View File

@ -65,7 +65,7 @@ static struct xt_table nat_table = {
};
/* Source NAT */
static unsigned int ipt_snat_target(struct sk_buff **pskb,
static unsigned int ipt_snat_target(struct sk_buff *skb,
const struct net_device *in,
const struct net_device *out,
unsigned int hooknum,
@ -78,7 +78,7 @@ static unsigned int ipt_snat_target(struct sk_buff **pskb,
NF_CT_ASSERT(hooknum == NF_IP_POST_ROUTING);
ct = nf_ct_get(*pskb, &ctinfo);
ct = nf_ct_get(skb, &ctinfo);
/* Connection must be valid and new. */
NF_CT_ASSERT(ct && (ctinfo == IP_CT_NEW || ctinfo == IP_CT_RELATED ||
@ -107,7 +107,7 @@ static void warn_if_extra_mangle(__be32 dstip, __be32 srcip)
ip_rt_put(rt);
}
static unsigned int ipt_dnat_target(struct sk_buff **pskb,
static unsigned int ipt_dnat_target(struct sk_buff *skb,
const struct net_device *in,
const struct net_device *out,
unsigned int hooknum,
@ -121,14 +121,14 @@ static unsigned int ipt_dnat_target(struct sk_buff **pskb,
NF_CT_ASSERT(hooknum == NF_IP_PRE_ROUTING ||
hooknum == NF_IP_LOCAL_OUT);
ct = nf_ct_get(*pskb, &ctinfo);
ct = nf_ct_get(skb, &ctinfo);
/* Connection must be valid and new. */
NF_CT_ASSERT(ct && (ctinfo == IP_CT_NEW || ctinfo == IP_CT_RELATED));
if (hooknum == NF_IP_LOCAL_OUT &&
mr->range[0].flags & IP_NAT_RANGE_MAP_IPS)
warn_if_extra_mangle(ip_hdr(*pskb)->daddr,
warn_if_extra_mangle(ip_hdr(skb)->daddr,
mr->range[0].min_ip);
return nf_nat_setup_info(ct, &mr->range[0], hooknum);
@ -204,7 +204,7 @@ alloc_null_binding_confirmed(struct nf_conn *ct, unsigned int hooknum)
return nf_nat_setup_info(ct, &range, hooknum);
}
int nf_nat_rule_find(struct sk_buff **pskb,
int nf_nat_rule_find(struct sk_buff *skb,
unsigned int hooknum,
const struct net_device *in,
const struct net_device *out,
@ -212,7 +212,7 @@ int nf_nat_rule_find(struct sk_buff **pskb,
{
int ret;
ret = ipt_do_table(pskb, hooknum, in, out, &nat_table);
ret = ipt_do_table(skb, hooknum, in, out, &nat_table);
if (ret == NF_ACCEPT) {
if (!nf_nat_initialized(ct, HOOK2MANIP(hooknum)))

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