4 #include <linux/if_tunnel.h>
7 /* Keep error state on tunnel for 30 sec */
8 #define IPTUNNEL_ERR_TIMEO (30*HZ)
12 struct ip_tunnel *next;
13 struct net_device *dev;
15 int err_count; /* Number of arrived ICMP errors */
16 unsigned long err_time; /* Time when the last ICMP error arrived */
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 */
24 struct ip_tunnel_parm parms;
26 struct ip_tunnel_prl_entry *prl; /* potential router list */
27 unsigned int prl_count; /* # of entries in PRL */
30 /* ISATAP: default interval between RS in secondy */
31 #define IPTUNNEL_RS_DEFAULT_DELAY (900)
33 struct ip_tunnel_prl_entry
35 struct ip_tunnel_prl_entry *next;
38 unsigned long rs_delay;
39 struct timer_list rs_timer;
40 struct ip_tunnel *tunnel;
44 #define IPTUNNEL_XMIT() do { \
46 int pkt_len = skb->len - skb_transport_offset(skb); \
48 skb->ip_summed = CHECKSUM_NONE; \
49 ip_select_ident(iph, &rt->u.dst, NULL); \
51 err = ip_local_out(skb); \
52 if (net_xmit_eval(err) == 0) { \
53 stats->tx_bytes += pkt_len; \
54 stats->tx_packets++; \
57 stats->tx_aborted_errors++; \