4 #include <linux/if_tunnel.h>
5 #include <net/gro_cells.h>
8 /* Keep error state on tunnel for 30 sec */
9 #define IPTUNNEL_ERR_TIMEO (30*HZ)
11 /* 6rd prefix/relay information */
12 struct ip_tunnel_6rd_parm {
13 struct in6_addr prefix;
20 struct ip_tunnel __rcu *next;
21 struct net_device *dev;
23 int err_count; /* Number of arrived ICMP errors */
24 unsigned long err_time; /* Time when the last ICMP error arrived */
26 /* These four fields used only by GRE */
27 __u32 i_seqno; /* The last seen seqno */
28 __u32 o_seqno; /* The last output seqno */
29 int hlen; /* Precalculated GRE header length */
32 struct ip_tunnel_parm parms;
35 #ifdef CONFIG_IPV6_SIT_6RD
36 struct ip_tunnel_6rd_parm ip6rd;
38 struct ip_tunnel_prl_entry __rcu *prl; /* potential router list */
39 unsigned int prl_count; /* # of entries in PRL */
41 struct gro_cells gro_cells;
44 struct ip_tunnel_prl_entry {
45 struct ip_tunnel_prl_entry __rcu *next;
48 struct rcu_head rcu_head;
51 static inline void iptunnel_xmit(struct sk_buff *skb, struct net_device *dev)
54 struct iphdr *iph = ip_hdr(skb);
55 int pkt_len = skb->len - skb_transport_offset(skb);
56 struct pcpu_tstats *tstats = this_cpu_ptr(dev->tstats);
59 skb->ip_summed = CHECKSUM_NONE;
60 ip_select_ident(iph, skb_dst(skb), NULL);
62 err = ip_local_out(skb);
63 if (likely(net_xmit_eval(err) == 0)) {
64 u64_stats_update_begin(&tstats->syncp);
65 tstats->tx_bytes += pkt_len;
67 u64_stats_update_end(&tstats->syncp);
69 dev->stats.tx_errors++;
70 dev->stats.tx_aborted_errors++;