pintos-os.org Git - openvswitch/blob - datapath/linux-2.6/compat-2.6/include/net/ipip.h

   1 #ifndef __NET_IPIP_WRAPPER_H
   2 #define __NET_IPIP_WRAPPER_H 1
   3
   4 #include <linux/version.h>
   5
   6 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,31)
   7 #define HAVE_NETDEV_QUEUE_STATS
   8 #endif
   9
  10 #if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,32)
  11
  12 #include <linux/if_tunnel.h>
  13 #include <net/ip.h>
  14
  15 /* Keep error state on tunnel for 30 sec */
  16 #define IPTUNNEL_ERR_TIMEO      (30*HZ)
  17
  18 struct ip_tunnel
  19 {
  20         struct ip_tunnel        *next;
  21         struct net_device       *dev;
  22 #ifndef HAVE_NETDEV_STATS
  23         struct net_device_stats stat;
  24 #endif
  25
  26         int                     err_count;      /* Number of arrived ICMP errors */
  27         unsigned long           err_time;       /* Time when the last ICMP error arrived */
  28
  29         /* These four fields used only by GRE */
  30         __u32                   i_seqno;        /* The last seen seqno  */
  31         __u32                   o_seqno;        /* The last output seqno */
  32         int                     hlen;           /* Precalculated GRE header length */
  33         int                     mlink;
  34
  35         struct ip_tunnel_parm   parms;
  36
  37         struct ip_tunnel_prl_entry      *prl;           /* potential router list */
  38         unsigned int                    prl_count;      /* # of entries in PRL */
  39 };
  40
  41 /* ISATAP: default interval between RS in secondy */
  42 #define IPTUNNEL_RS_DEFAULT_DELAY       (900)
  43
  44 struct ip_tunnel_prl_entry
  45 {
  46         struct ip_tunnel_prl_entry      *next;
  47         __be32                          addr;
  48         u16                             flags;
  49         unsigned long                   rs_delay;
  50         struct timer_list               rs_timer;
  51         struct ip_tunnel                *tunnel;
  52         spinlock_t                      lock;
  53 };
  54
  55 #ifdef HAVE_NETDEV_QUEUE_STATS
  56 #define UPDATE_TX_STATS()                                               \
  57         txq->tx_bytes += pkt_len;                                       \
  58         txq->tx_packets++;
  59 #else
  60 #define UPDATE_TX_STATS()                                               \
  61         stats->tx_bytes += pkt_len;                                     \
  62         stats->tx_packets++;
  63 #endif
  64
  65 #define IPTUNNEL_XMIT() do {                                            \
  66         int err;                                                        \
  67         int pkt_len = skb->len - skb_transport_offset(skb);             \
  68                                                                         \
  69         skb->ip_summed = CHECKSUM_NONE;                                 \
  70         ip_select_ident(iph, &rt->u.dst, NULL);                         \
  71                                                                         \
  72         err = ip_local_out(skb);                                        \
  73         if (likely(net_xmit_eval(err) == 0)) {                          \
  74                 UPDATE_TX_STATS();                                      \
  75         } else {                                                        \
  76                 stats->tx_errors++;                                     \
  77                 stats->tx_aborted_errors++;                             \
  78         }                                                               \
  79 } while (0)
  80
  81 #else
  82 #include_next <net/ipip.h>
  83 #endif /* kernel < 2.6.32 */
  84
  85 #endif /* net/ipip.h wrapper */