| #ifndef __NET_IPIP_H |
| #define __NET_IPIP_H 1 |
| |
| #include <linux/if_tunnel.h> |
| #include <net/ip.h> |
| |
| /* Keep error state on tunnel for 30 sec */ |
| #define IPTUNNEL_ERR_TIMEO (30*HZ) |
| |
| /* 6rd prefix/relay information */ |
| struct ip_tunnel_6rd_parm |
| { |
| struct in6_addr prefix; |
| __be32 relay_prefix; |
| u16 prefixlen; |
| u16 relay_prefixlen; |
| }; |
| |
| struct ip_tunnel |
| { |
| struct ip_tunnel *next; |
| struct net_device *dev; |
| |
| int err_count; /* Number of arrived ICMP errors */ |
| unsigned long err_time; /* Time when the last ICMP error arrived */ |
| |
| /* These four fields used only by GRE */ |
| __u32 i_seqno; /* The last seen seqno */ |
| __u32 o_seqno; /* The last output seqno */ |
| int hlen; /* Precalculated GRE header length */ |
| int mlink; |
| |
| struct ip_tunnel_parm parms; |
| |
| /* for SIT */ |
| #ifdef CONFIG_IPV6_SIT_6RD |
| struct ip_tunnel_6rd_parm ip6rd; |
| #endif |
| struct ip_tunnel_prl_entry *prl; /* potential router list */ |
| unsigned int prl_count; /* # of entries in PRL */ |
| }; |
| |
| struct ip_tunnel_prl_entry |
| { |
| struct ip_tunnel_prl_entry *next; |
| __be32 addr; |
| u16 flags; |
| struct rcu_head rcu_head; |
| }; |
| |
| #define IPTUNNEL_XMIT() do { \ |
| int err; \ |
| int pkt_len = skb->len - skb_transport_offset(skb); \ |
| \ |
| skb->ip_summed = CHECKSUM_NONE; \ |
| ip_select_ident(iph, &rt->u.dst, NULL); \ |
| \ |
| err = ip_local_out(skb); \ |
| if (likely(net_xmit_eval(err) == 0)) { \ |
| txq->tx_bytes += pkt_len; \ |
| txq->tx_packets++; \ |
| } else { \ |
| stats->tx_errors++; \ |
| stats->tx_aborted_errors++; \ |
| } \ |
| } while (0) |
| |
| #endif |