SAFE public projects git trees. - safe/jmp/linux-2.6/blob - include/net/ipip.h

   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 struct ip_tunnel
  11 {
  12         struct ip_tunnel        *next;
  13         struct net_device       *dev;
  14
  15         int                     err_count;      /* Number of arrived ICMP errors */
  16         unsigned long           err_time;       /* Time when the last ICMP error arrived */
  17
  18         /* These four fields used only by GRE */
  19         __u32                   i_seqno;        /* The last seen seqno  */
  20         __u32                   o_seqno;        /* The last output seqno */
  21         int                     hlen;           /* Precalculated GRE header length */
  22         int                     mlink;
  23
  24         struct ip_tunnel_parm   parms;
  25
  26         struct ip_tunnel_prl_entry      *prl;           /* potential router list */
  27         unsigned int                    prl_count;      /* # of entries in PRL */
  28 };
  29
  30 /* ISATAP: default interval between RS in secondy */
  31 #define IPTUNNEL_RS_DEFAULT_DELAY       (900)
  32
  33 struct ip_tunnel_prl_entry
  34 {
  35         struct ip_tunnel_prl_entry      *next;
  36         __be32                          addr;
  37         u16                             flags;
  38         unsigned long                   rs_delay;
  39         struct timer_list               rs_timer;
  40         struct ip_tunnel                *tunnel;
  41         spinlock_t                      lock;
  42 };
  43
  44 #define IPTUNNEL_XMIT() do {                                            \
  45         int err;                                                        \
  46         int pkt_len = skb->len - skb_transport_offset(skb);             \
  47                                                                         \
  48         skb->ip_summed = CHECKSUM_NONE;                                 \
  49         ip_select_ident(iph, &rt->u.dst, NULL);                         \
  50                                                                         \
  51         err = ip_local_out(skb);                                        \
  52         if (net_xmit_eval(err) == 0) {                                  \
  53                 stats->tx_bytes += pkt_len;                             \
  54                 stats->tx_packets++;                                    \
  55         } else {                                                        \
  56                 stats->tx_errors++;                                     \
  57                 stats->tx_aborted_errors++;                             \
  58         }                                                               \
  59 } while (0)
  60
  61 #endif