These arrays are accessed by iteration in
llc_exec_station_trans_actions(). There must not be any zero-filled
gaps in them, so the explicit indices are pointless.
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
We only ever put one skb on the send queue, and then immediately
send it. Remove the queue and call dev_queue_xmit() directly.
This leaves struct llc_station empty, so remove that as well.
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
We only ever put one skb on the event queue, and then immediately
process it. Remove the queue and fold together the related functions,
removing several blatantly false comments.
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
The initial state is UP and there is no way to enter the other states
as the required event type is never generated. Delete all states,
event types, and other dead code. The only thing left is handling
of the XID and TEST commands.
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
John W. Linville says:
====================
This is another batch of updates intended for the 3.7 stream.
There are not a lot of large items, but iwlwifi, mwifiex, rt2x00,
ath9k, and brcmfmac all get some attention. Wei Yongjun also provides
a series of small maintenance fixes.
This also includes a pull of the wireless tree in order to satisfy
some prerequisites for later patches.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Conflicts:
net/netfilter/nfnetlink_log.c
net/netfilter/xt_LOG.c
Rather easy conflict resolution, the 'net' tree had bug fixes to make
sure we checked if a socket is a time-wait one or not and elide the
logging code if so.
Whereas on the 'net-next' side we are calculating the UID and GID from
the creds using different interfaces due to the user namespace changes
from Eric Biederman.
Signed-off-by: David S. Miller <davem@davemloft.net>
Pull networking fixes from David Miller:
1) Use after free and new device IDs in bluetooth from Andre Guedes,
Yevgeniy Melnichuk, Gustavo Padovan, and Henrik Rydberg.
2) Fix crashes with short packet lengths and VLAN in pktgen, from
Nishank Trivedi.
3) mISDN calls flush_work_sync() with locks held, fix from Karsten
Keil.
4) Packet scheduler gred parameters are reported to userspace
improperly scaled, and WRED idling is not performed correctly. All
from David Ward.
5) Fix TCP socket refcount problem in ipv6, from Julian Anastasov.
6) ibmveth device has RX queue alignment requirements which are not
being explicitly met resulting in sporadic failures, fix from
Santiago Leon.
7) Netfilter needs to take care when interpreting sockets attached to
socket buffers, they could be time-wait minisockets. Fix from Eric
Dumazet.
8) sock_edemux() has the same issue as netfilter did in #7 above, fix
from Eric Dumazet.
9) Avoid infinite loops in CBQ scheduler with some configurations, from
Eric Dumazet.
10) Deal with "Reflection scan: an Off-Path Attack on TCP", from Jozsef
Kadlecsik.
11) SCTP overcharges socket for TX packets, fix from Thomas Graf.
12) CODEL packet scheduler should not reset it's state every time it
builds a new flow, fix from Eric Dumazet.
13) Fix memory leak in nl80211, from Wei Yongjun.
14) NETROM doesn't check skb_copy_datagram_iovec() return values, from
Alan Cox.
15) l2tp ethernet was using sizeof(ETH_HLEN) instead of plain ETH_HLEN,
oops. From Eric Dumazet.
16) Fix selection of ath9k chips on which PA linearization and AM2PM
predistoration are used, from Felix Fietkau.
17) Flow steering settings in mlx4 driver need to be validated properly,
from Hadar Hen Zion.
18) bnx2x doesn't show the correct link duplex setting, from Yaniv
Rosner.
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (75 commits)
pktgen: fix crash with vlan and packet size less than 46
bnx2x: Add missing afex code
bnx2x: fix registers dumped
bnx2x: correct advertisement of pause capabilities
bnx2x: display the correct duplex value
bnx2x: prevent timeouts when using PFC
bnx2x: fix stats copying logic
bnx2x: Avoid sending multiple statistics queries
net: qmi_wwan: call subdriver with control intf only
net_sched: gred: actually perform idling in WRED mode
net_sched: gred: fix qave reporting via netlink
net_sched: gred: eliminate redundant DP prio comparisons
net_sched: gred: correct comment about qavg calculation in RIO mode
mISDN: Fix wrong usage of flush_work_sync while holding locks
netfilter: log: Fix log-level processing
net-sched: sch_cbq: avoid infinite loop
net: qmi_wwan: fix Gobi device probing for un2430
net: fix net/core/sock.c build error
ixp4xx_hss: fix build failure due to missing linux/module.h inclusion
caif: move the dereference below the NULL test
...
If vlan option is being specified in the pktgen and packet size
being requested is less than 46 bytes, despite being illogical
request, pktgen should not crash the kernel.
BUG: unable to handle kernel paging request at ffff88021fb82000
Process kpktgend_0 (pid: 1184, threadinfo ffff880215f1a000, task ffff880218544530)
Call Trace:
[<ffffffffa0637cd2>] ? pktgen_finalize_skb+0x222/0x300 [pktgen]
[<ffffffff814f0084>] ? build_skb+0x34/0x1c0
[<ffffffffa0639b11>] pktgen_thread_worker+0x5d1/0x1790 [pktgen]
[<ffffffffa03ffb10>] ? igb_xmit_frame_ring+0xa30/0xa30 [igb]
[<ffffffff8107ba20>] ? wake_up_bit+0x40/0x40
[<ffffffff8107ba20>] ? wake_up_bit+0x40/0x40
[<ffffffffa0639540>] ? spin+0x240/0x240 [pktgen]
[<ffffffff8107b4e3>] kthread+0x93/0xa0
[<ffffffff81615de4>] kernel_thread_helper+0x4/0x10
[<ffffffff8107b450>] ? flush_kthread_worker+0x80/0x80
[<ffffffff81615de0>] ? gs_change+0x13/0x13
The root cause of why pktgen is not able to handle this case is due
to comparison of signed (datalen) and unsigned data (sizeof), which
eventually passes a huge number to skb_put().
Signed-off-by: Nishank Trivedi <nistrive@cisco.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
geting route info does not write rt->rt6i_table, so replace
write lock with read lock
Suggested-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Li RongQing <roy.qing.li@gmail.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Compare bits up to the source address's prefix length only to
allows DNS load balancing to continue to be used as a tie breaker.
Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Added labels for site-local addresses (fec0::/10) and 6bone testing
addresses (3ffe::/16) in order to depreference them.
Note that the RFC introduced new rows for Teredo, ULA and 6to4 addresses
in the default policy table. Some of them have different labels from ours.
For backward compatibility, we do not change the "default" labels.
Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Replace the current (inefficient) for-loop with memcpy, to copy priomap.
Signed-off-by: Srivatsa S. Bhat <srivatsa.bhat@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The update_netdev_tables() function appears to be unnecessary, since the
write_update_netdev_table() function will adjust the priomaps as and when
required anyway. So drop the usage of update_netdev_tables() entirely.
Signed-off-by: Srivatsa S. Bhat <srivatsa.bhat@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
gred_dequeue() and gred_drop() do not seem to get called when the
queue is empty, meaning that we never start idling while in WRED
mode. And since qidlestart is not stored by gred_store_wred_set(),
we would never stop idling while in WRED mode if we ever started.
This messes up the average queue size calculation that influences
packet marking/dropping behavior.
Now, we start WRED mode idling as we are removing the last packet
from the queue. Also we now actually stop WRED mode idling when we
are enqueuing a packet.
Cc: Bruce Osler <brosler@cisco.com>
Signed-off-by: David Ward <david.ward@ll.mit.edu>
Acked-by: Jamal Hadi Salim <jhs@mojatatu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
q->vars.qavg is a Wlog scaled value, but q->backlog is not. In order
to pass q->vars.qavg as the backlog value, we need to un-scale it.
Additionally, the qave value returned via netlink should not be Wlog
scaled, so we need to un-scale the result of red_calc_qavg().
This caused artificially high values for "Average Queue" to be shown
by 'tc -s -d qdisc', but did not affect the actual operation of GRED.
Signed-off-by: David Ward <david.ward@ll.mit.edu>
Acked-by: Jamal Hadi Salim <jhs@mojatatu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Each pair of DPs only needs to be compared once when searching for
a non-unique prio value.
Signed-off-by: David Ward <david.ward@ll.mit.edu>
Acked-by: Jamal Hadi Salim <jhs@mojatatu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Pablo Neira Ayuso says:
====================
The following patchset contains four Netfilter updates, mostly targeting
to fix issues added with IPv6 NAT, and one little IPVS update for net-next:
* Remove unneeded conditional free of skb in nfnetlink_queue, from
Wei Yongjun.
* One semantic path from coccinelle detected the use of list_del +
INIT_LIST_HEAD, instead of list_del_init, again from Wei Yongjun.
* Fix out-of-bound memory access in the NAT address selection, from
Florian Westphal. This was introduced with the IPv6 NAT patches.
* Two fixes for crashes that were introduced in the recently merged
IPv6 NAT support, from myself.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Pablo Neira Ayuso say:
====================
The following patchset contains four updates for your net tree, they are:
* Fix crash on timewait sockets, since the TCP early demux was added,
in nfnetlink_log, from Eric Dumazet.
* Fix broken syslog log-level for xt_LOG and ebt_log since printk format was
converted from <.> to a 2 bytes pattern using ASCII SOH, from Joe Perches.
* Two security fixes for the TCP connection tracking targeting off-path attacks,
from Jozsef Kadlecsik. The problem was discovered by Jan Wrobel and it is
documented in: http://mixedbit.org/reflection_scan/reflection_scan.pdf.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
- Final (hopefully) fix for the range checking code in NFSv4 getacl. This
should fix the Oopses being seen when the acl size is close to PAGE_SIZE.
- Fix a regression with the legacy binary mount code
- Fix a regression in the readdir cookieverf initialisation
- Fix an RPC over UDP regression
- Ensure that we report all errors in the NFSv4 open code
- Ensure that fsync() reports all relevant synchronisation errors.
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Merge tag 'nfs-for-3.6-4' of git://git.linux-nfs.org/projects/trondmy/linux-nfs
Pull NFS client bugfixes from Trond Myklebust:
- Final (hopefully) fix for the range checking code in NFSv4 getacl.
This should fix the Oopses being seen when the acl size is close to
PAGE_SIZE.
- Fix a regression with the legacy binary mount code
- Fix a regression in the readdir cookieverf initialisation
- Fix an RPC over UDP regression
- Ensure that we report all errors in the NFSv4 open code
- Ensure that fsync() reports all relevant synchronisation errors.
* tag 'nfs-for-3.6-4' of git://git.linux-nfs.org/projects/trondmy/linux-nfs:
NFS: fsync() must exit with an error if page writeback failed
SUNRPC: Fix a UDP transport regression
NFS: return error from decode_getfh in decode open
NFSv4: Fix buffer overflow checking in __nfs4_get_acl_uncached
NFSv4: Fix range checking in __nfs4_get_acl_uncached and __nfs4_proc_set_acl
NFS: Fix a problem with the legacy binary mount code
NFS: Fix the initialisation of the readdir 'cookieverf' array
(c7232c9 netfilter: add protocol independent NAT core) added
incorrect locking for the module auto-load case in ctnetlink_parse_nat.
That function is always called from ctnetlink_create_conntrack which
requires no locking.
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
auto75914331@hushmail.com reports that iptables does not correctly
output the KERN_<level>.
$IPTABLES -A RULE_0_in -j LOG --log-level notice --log-prefix "DENY in: "
result with linux 3.6-rc5
Sep 12 06:37:29 xxxxx kernel: <5>DENY in: IN=eth0 OUT= MAC=.......
result with linux 3.5.3 and older:
Sep 9 10:43:01 xxxxx kernel: DENY in: IN=eth0 OUT= MAC......
commit 04d2c8c83d0
("printk: convert the format for KERN_<LEVEL> to a 2 byte pattern")
updated the syslog header style but did not update netfilter uses.
Do so.
Use KERN_SOH and string concatenation instead of "%c" KERN_SOH_ASCII
as suggested by Eric Dumazet.
Signed-off-by: Joe Perches <joe@perches.com>
cc: auto75914331@hushmail.com
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Its possible to setup a bad cbq configuration leading to
an infinite loop in cbq_classify()
DEV_OUT=eth0
ICMP="match ip protocol 1 0xff"
U32="protocol ip u32"
DST="match ip dst"
tc qdisc add dev $DEV_OUT root handle 1: cbq avpkt 1000 \
bandwidth 100mbit
tc class add dev $DEV_OUT parent 1: classid 1:1 cbq \
rate 512kbit allot 1500 prio 5 bounded isolated
tc filter add dev $DEV_OUT parent 1: prio 3 $U32 \
$ICMP $DST 192.168.3.234 flowid 1:
Reported-by: Denys Fedoryschenko <denys@visp.net.lb>
Tested-by: Denys Fedoryschenko <denys@visp.net.lb>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Fix net/core/sock.c build error when CONFIG_INET is not enabled:
net/built-in.o: In function `sock_edemux':
(.text+0xd396): undefined reference to `inet_twsk_put'
Signed-off-by: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
After this commit:
commit 97cac0821af4474ec4ba3a9e7a36b98ed9b6db88
Author: David S. Miller <davem@davemloft.net>
Date: Mon Jul 2 22:43:47 2012 -0700
ipv6: Store route neighbour in rt6_info struct.
we no longer use RCU to protect route neighbour.
Cc: "David S. Miller" <davem@davemloft.net>
Signed-off-by: Cong Wang <amwang@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The dereference should be moved below the NULL test.
spatch with a semantic match is used to found this.
(http://coccinelle.lip6.fr/)
Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: David S. Miller <davem@davemloft.net>
Add a new ALU opcode, to compute a modulus.
Commit ffe06c17afbbb used an ancillary to implement XOR_X,
but here we reserve one of the available ALU opcode to implement both
MOD_X and MOD_K
Signed-off-by: Eric Dumazet <edumazet@google.com>
Suggested-by: George Bakos <gbakos@alpinista.org>
Cc: Jay Schulist <jschlst@samba.org>
Cc: Jiri Pirko <jpirko@redhat.com>
Cc: Andi Kleen <ak@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
When a policy expiration is triggered from user space the request
travels through km_policy_expired and ultimately into
xfrm_exp_policy_notify which calls build_polexpire. build_polexpire
uses the netlink port passed to km_policy_expired as the source port for
the netlink message it builds.
When a state expiration is triggered from user space the request travles
through km_state_expired and ultimately into xfrm_exp_state_notify which
calls build_expire. build_expire uses the netlink port passed to
km_state_expired as the source port for the netlink message it builds.
Pass nlh->nlmsg_pid from the user generated netlink message that
requested the expiration to km_policy_expired and km_state_expired
instead of current->pid which is not a netlink port number.
Cc: Jamal Hadi Salim <hadi@cyberus.ca>
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Acked-by: Jamal Hadi Salim <jhs@mojatatu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
It is a frequent mistake to confuse the netlink port identifier with a
process identifier. Try to reduce this confusion by renaming fields
that hold port identifiers portid instead of pid.
I have carefully avoided changing the structures exported to
userspace to avoid changing the userspace API.
I have successfully built an allyesconfig kernel with this change.
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Acked-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Using list_del_init() instead of list_del() + INIT_LIST_HEAD().
spatch with a semantic match is used to found this problem.
(http://coccinelle.lip6.fr/)
Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Acked-by: Simon Horman <horms@verge.net.au>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
We spare nothing by not validating the sequence number of dataless
ACK packets and enabling it makes harder off-path attacks.
See: "Reflection scan: an Off-Path Attack on TCP" by Jan Wrobel,
http://arxiv.org/abs/1201.2074
Signed-off-by: Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Clients should not send such packets. By accepting them, we open
up a hole by wich ephemeral ports can be discovered in an off-path
attack.
See: "Reflection scan: an Off-Path Attack on TCP" by Jan Wrobel,
http://arxiv.org/abs/1201.2074
Signed-off-by: Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
include/linux/jhash.h:138:16: warning: array subscript is above array bounds
[jhash2() expects the number of u32 in the key]
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
This patch defines netlink_kernel_create as a wrapper function of
__netlink_kernel_create to hide the struct module *me parameter
(which seems to be THIS_MODULE in all existing netlink subsystems).
Suggested by David S. Miller.
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Replace netlink_set_nonroot by one new field `flags' in
struct netlink_kernel_cfg that is passed to netlink_kernel_create.
This patch also renames NL_NONROOT_* to NL_CFG_F_NONROOT_* since
now the flags field in nl_table is generic (so we can add more
flags if needed in the future).
Also adjust all callers in the net-next tree to use these flags
instead of netlink_set_nonroot.
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
In the current rxhash calculation function, while the
sorting of the ports/addrs is coherent (you get the
same rxhash for packets sharing the same 4-tuple, in
both directions), ports and addrs are sorted
independently. This implies packets from a connection
between the same addresses but crossed ports hash to
the same rxhash.
For example, traffic between A=S:l and B=L:s is hashed
(in both directions) from {L, S, {s, l}}. The same
rxhash is obtained for packets between C=S:s and D=L:l.
This patch ensures that you either swap both addrs and ports,
or you swap none. Traffic between A and B, and traffic
between C and D, get their rxhash from different sources
({L, S, {l, s}} for A<->B, and {L, S, {s, l}} for C<->D)
The patch is co-written with Eric Dumazet <edumazet@google.com>
Signed-off-by: Chema Gonzalez <chema@google.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
We dont use jhash anymore since route cache removal,
so we can get rid of get_random_bytes() calls for rt_genid
changes.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Since route cache deletion (89aef8921bfbac22f), delay is no
more used. Remove it.
Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Passing uids and gids on NETLINK_CB from a process in one user
namespace to a process in another user namespace can result in the
wrong uid or gid being presented to userspace. Avoid that problem by
passing kuids and kgids instead.
- define struct scm_creds for use in scm_cookie and netlink_skb_parms
that holds uid and gid information in kuid_t and kgid_t.
- Modify scm_set_cred to fill out scm_creds by heand instead of using
cred_to_ucred to fill out struct ucred. This conversion ensures
userspace does not get incorrect uid or gid values to look at.
- Modify scm_recv to convert from struct scm_creds to struct ucred
before copying credential values to userspace.
- Modify __scm_send to populate struct scm_creds on in the scm_cookie,
instead of just copying struct ucred from userspace.
- Modify netlink_sendmsg to copy scm_creds instead of struct ucred
into the NETLINK_CB.
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
John W. Linville says:
====================
Please pull these fixes intended for 3.6. There are more commits
here than I would like -- I got a bit behind while I was stalking
Steven Rostedt in San Diego last week... I'll slow it down after this!
There are a couple of pulls here. One is from Johannes:
"Please pull (according to the below information) to get a few fixes.
* a fix to properly disconnect in the driver when authentication or
association fails
* a fix to prevent invalid information about mesh paths being reported
to userspace
* a memory leak fix in an nl80211 error path"
The other comes via Gustavo:
"A few updates for the 3.6 kernel. There are two btusb patches to add
more supported devices through the new USB_VENDOR_AND_INTEFACE_INFO()
macro and another one that add a new device id for a Sony Vaio laptop,
one fix for a user-after-free and, finally, two patches from Vinicius
to fix a issue in SMP pairing."
Along with those...
Arend van Spriel provides a fix for a use-after-free bug in brcmfmac.
Daniel Drake avoids a hang by not trying to touch the libertas hardware
duing suspend if it is already powered-down.
Felix Fietkau provides a batch of ath9k fixes that adress some
potential problems with power settings, as well as a fix to avoid a
potential interrupt storm.
Gertjan van Wingerde provides a register-width fix for rt2x00, and
a rt2x00 fix to prevent incorrectly detecting the rfkill status.
He also provides a device ID patch.
Hante Meuleman gives us three brcmfmac fixes, one that properly
initializes a command structure, one that fixes a race condition that
could lose usb requests, and one that removes some log spam.
Marc Kleine-Budde offers an rt2x00 fix for a voltage setting on some
specific devices.
Mohammed Shafi Shajakhan sent an ath9k fix to avoid a crash related to
using timers that aren't allocated when 2 wire bluetooth coexistence
hardware is in use.
Sergei Poselenov changes rt2800usb to do some validity checking for
received packets, avoiding crashes on an ARM Soc.
Stone Piao gives us an mwifiex fix for an incorrectly set skb length
value for a command buffer.
All of these are localized to their specific drivers, and relatively
small. The power-related patches from Felix are bigger than I would
like, but I merged them in consideration of their isolation to ath9k
and the sensitive nature of power settings in wireless devices.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
