mirror of
https://github.com/joel16/android_kernel_sony_msm8994.git
synced 2024-11-27 06:01:12 +00:00
b9099fea22
[ No applicable upstream commit, the upstream implementation is now completely different and doesn't have this bug. ] In case of WCCPv2 GRE header has extra four bytes. Following patch pull those extra four bytes so that skb offsets are set correctly. CC: Eric Dumazet <eric.dumazet@gmail.com> Reported-by: Peter Schmitt <peter.schmitt82@yahoo.de> Tested-by: Peter Schmitt <peter.schmitt82@yahoo.de> Signed-off-by: Pravin B Shelar <pshelar@nicira.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
164 lines
4.4 KiB
C
164 lines
4.4 KiB
C
#ifndef __NET_IP_TUNNELS_H
|
|
#define __NET_IP_TUNNELS_H 1
|
|
|
|
#include <linux/if_tunnel.h>
|
|
#include <linux/netdevice.h>
|
|
#include <linux/skbuff.h>
|
|
#include <linux/types.h>
|
|
#include <linux/u64_stats_sync.h>
|
|
#include <net/dsfield.h>
|
|
#include <net/gro_cells.h>
|
|
#include <net/inet_ecn.h>
|
|
#include <net/ip.h>
|
|
#include <net/rtnetlink.h>
|
|
|
|
#if IS_ENABLED(CONFIG_IPV6)
|
|
#include <net/ipv6.h>
|
|
#include <net/ip6_fib.h>
|
|
#include <net/ip6_route.h>
|
|
#endif
|
|
|
|
/* Keep error state on tunnel for 30 sec */
|
|
#define IPTUNNEL_ERR_TIMEO (30*HZ)
|
|
|
|
/* 6rd prefix/relay information */
|
|
#ifdef CONFIG_IPV6_SIT_6RD
|
|
struct ip_tunnel_6rd_parm {
|
|
struct in6_addr prefix;
|
|
__be32 relay_prefix;
|
|
u16 prefixlen;
|
|
u16 relay_prefixlen;
|
|
};
|
|
#endif
|
|
|
|
struct ip_tunnel_prl_entry {
|
|
struct ip_tunnel_prl_entry __rcu *next;
|
|
__be32 addr;
|
|
u16 flags;
|
|
struct rcu_head rcu_head;
|
|
};
|
|
|
|
struct ip_tunnel {
|
|
struct ip_tunnel __rcu *next;
|
|
struct hlist_node hash_node;
|
|
struct net_device *dev;
|
|
|
|
int err_count; /* Number of arrived ICMP errors */
|
|
unsigned long err_time; /* Time when the last ICMP error
|
|
* arrived */
|
|
|
|
/* These four fields used only by GRE */
|
|
__u32 i_seqno; /* The last seen seqno */
|
|
__u32 o_seqno; /* The last output seqno */
|
|
int hlen; /* Precalculated header length */
|
|
int mlink;
|
|
|
|
struct ip_tunnel_parm parms;
|
|
|
|
/* for SIT */
|
|
#ifdef CONFIG_IPV6_SIT_6RD
|
|
struct ip_tunnel_6rd_parm ip6rd;
|
|
#endif
|
|
struct ip_tunnel_prl_entry __rcu *prl; /* potential router list */
|
|
unsigned int prl_count; /* # of entries in PRL */
|
|
int ip_tnl_net_id;
|
|
struct gro_cells gro_cells;
|
|
};
|
|
|
|
#define TUNNEL_CSUM __cpu_to_be16(0x01)
|
|
#define TUNNEL_ROUTING __cpu_to_be16(0x02)
|
|
#define TUNNEL_KEY __cpu_to_be16(0x04)
|
|
#define TUNNEL_SEQ __cpu_to_be16(0x08)
|
|
#define TUNNEL_STRICT __cpu_to_be16(0x10)
|
|
#define TUNNEL_REC __cpu_to_be16(0x20)
|
|
#define TUNNEL_VERSION __cpu_to_be16(0x40)
|
|
#define TUNNEL_NO_KEY __cpu_to_be16(0x80)
|
|
|
|
struct tnl_ptk_info {
|
|
__be16 flags;
|
|
__be16 proto;
|
|
__be32 key;
|
|
__be32 seq;
|
|
};
|
|
|
|
#define PACKET_RCVD 0
|
|
#define PACKET_REJECT 1
|
|
|
|
#define IP_TNL_HASH_BITS 10
|
|
#define IP_TNL_HASH_SIZE (1 << IP_TNL_HASH_BITS)
|
|
|
|
struct ip_tunnel_net {
|
|
struct hlist_head *tunnels;
|
|
struct net_device *fb_tunnel_dev;
|
|
};
|
|
|
|
int ip_tunnel_init(struct net_device *dev);
|
|
void ip_tunnel_uninit(struct net_device *dev);
|
|
void ip_tunnel_dellink(struct net_device *dev, struct list_head *head);
|
|
int ip_tunnel_init_net(struct net *net, int ip_tnl_net_id,
|
|
struct rtnl_link_ops *ops, char *devname);
|
|
|
|
void ip_tunnel_delete_net(struct ip_tunnel_net *itn);
|
|
|
|
void ip_tunnel_xmit(struct sk_buff *skb, struct net_device *dev,
|
|
const struct iphdr *tnl_params);
|
|
int ip_tunnel_ioctl(struct net_device *dev, struct ip_tunnel_parm *p, int cmd);
|
|
int ip_tunnel_change_mtu(struct net_device *dev, int new_mtu);
|
|
|
|
struct rtnl_link_stats64 *ip_tunnel_get_stats64(struct net_device *dev,
|
|
struct rtnl_link_stats64 *tot);
|
|
struct ip_tunnel *ip_tunnel_lookup(struct ip_tunnel_net *itn,
|
|
int link, __be16 flags,
|
|
__be32 remote, __be32 local,
|
|
__be32 key);
|
|
|
|
int ip_tunnel_rcv(struct ip_tunnel *tunnel, struct sk_buff *skb,
|
|
const struct tnl_ptk_info *tpi, int hdr_len, bool log_ecn_error);
|
|
int ip_tunnel_changelink(struct net_device *dev, struct nlattr *tb[],
|
|
struct ip_tunnel_parm *p);
|
|
int ip_tunnel_newlink(struct net_device *dev, struct nlattr *tb[],
|
|
struct ip_tunnel_parm *p);
|
|
void ip_tunnel_setup(struct net_device *dev, int net_id);
|
|
|
|
/* Extract dsfield from inner protocol */
|
|
static inline u8 ip_tunnel_get_dsfield(const struct iphdr *iph,
|
|
const struct sk_buff *skb)
|
|
{
|
|
if (skb->protocol == htons(ETH_P_IP))
|
|
return iph->tos;
|
|
else if (skb->protocol == htons(ETH_P_IPV6))
|
|
return ipv6_get_dsfield((const struct ipv6hdr *)iph);
|
|
else
|
|
return 0;
|
|
}
|
|
|
|
/* Propogate ECN bits out */
|
|
static inline u8 ip_tunnel_ecn_encap(u8 tos, const struct iphdr *iph,
|
|
const struct sk_buff *skb)
|
|
{
|
|
u8 inner = ip_tunnel_get_dsfield(iph, skb);
|
|
|
|
return INET_ECN_encapsulate(tos, inner);
|
|
}
|
|
|
|
static inline void iptunnel_xmit(struct sk_buff *skb, struct net_device *dev)
|
|
{
|
|
int err;
|
|
int pkt_len = skb->len - skb_transport_offset(skb);
|
|
struct pcpu_tstats *tstats = this_cpu_ptr(dev->tstats);
|
|
|
|
nf_reset(skb);
|
|
|
|
err = ip_local_out(skb);
|
|
if (likely(net_xmit_eval(err) == 0)) {
|
|
u64_stats_update_begin(&tstats->syncp);
|
|
tstats->tx_bytes += pkt_len;
|
|
tstats->tx_packets++;
|
|
u64_stats_update_end(&tstats->syncp);
|
|
} else {
|
|
dev->stats.tx_errors++;
|
|
dev->stats.tx_aborted_errors++;
|
|
}
|
|
}
|
|
#endif /* __NET_IP_TUNNELS_H */
|