linux/include/net/ipip.h
<<
>>
Prefs
   1#ifndef __NET_IPIP_H
   2#define __NET_IPIP_H 1
   3
   4#include <linux/if_tunnel.h>
   5#include <net/ip.h>
   6
   7/* Keep error state on tunnel for 30 sec */
   8#define IPTUNNEL_ERR_TIMEO      (30*HZ)
   9
  10/* 6rd prefix/relay information */
  11struct ip_tunnel_6rd_parm {
  12        struct in6_addr         prefix;
  13        __be32                  relay_prefix;
  14        u16                     prefixlen;
  15        u16                     relay_prefixlen;
  16};
  17
  18struct ip_tunnel {
  19        struct ip_tunnel __rcu  *next;
  20        struct net_device       *dev;
  21
  22        int                     err_count;      /* Number of arrived ICMP errors */
  23        unsigned long           err_time;       /* Time when the last ICMP error arrived */
  24
  25        /* These four fields used only by GRE */
  26        __u32                   i_seqno;        /* The last seen seqno  */
  27        __u32                   o_seqno;        /* The last output seqno */
  28        int                     hlen;           /* Precalculated GRE header length */
  29        int                     mlink;
  30
  31        struct ip_tunnel_parm   parms;
  32
  33        /* for SIT */
  34#ifdef CONFIG_IPV6_SIT_6RD
  35        struct ip_tunnel_6rd_parm       ip6rd;
  36#endif
  37        struct ip_tunnel_prl_entry __rcu *prl;          /* potential router list */
  38        unsigned int                    prl_count;      /* # of entries in PRL */
  39};
  40
  41struct ip_tunnel_prl_entry {
  42        struct ip_tunnel_prl_entry __rcu *next;
  43        __be32                          addr;
  44        u16                             flags;
  45        struct rcu_head                 rcu_head;
  46};
  47
  48#define __IPTUNNEL_XMIT(stats1, stats2) do {                            \
  49        int err;                                                        \
  50        int pkt_len = skb->len - skb_transport_offset(skb);             \
  51                                                                        \
  52        skb->ip_summed = CHECKSUM_NONE;                                 \
  53        ip_select_ident(iph, &rt->dst, NULL);                           \
  54                                                                        \
  55        err = ip_local_out(skb);                                        \
  56        if (likely(net_xmit_eval(err) == 0)) {                          \
  57                u64_stats_update_begin(&(stats1)->syncp);               \
  58                (stats1)->tx_bytes += pkt_len;                          \
  59                (stats1)->tx_packets++;                                 \
  60                u64_stats_update_end(&(stats1)->syncp);                 \
  61        } else {                                                        \
  62                (stats2)->tx_errors++;                                  \
  63                (stats2)->tx_aborted_errors++;                          \
  64        }                                                               \
  65} while (0)
  66
  67#define IPTUNNEL_XMIT() __IPTUNNEL_XMIT(txq, stats)
  68
  69#endif
  70
lxr.linux.no kindly hosted by Redpill Linpro AS, provider of Linux consulting and operations services since 1995.