diff options
Diffstat (limited to 'include/net/ipip.h')
| -rw-r--r-- | include/net/ipip.h | 67 |
1 files changed, 67 insertions, 0 deletions
diff --git a/include/net/ipip.h b/include/net/ipip.h new file mode 100644 index 00000000..a32654d5 --- /dev/null +++ b/include/net/ipip.h @@ -0,0 +1,67 @@ +#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 __rcu *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 __rcu *prl; /* potential router list */ + unsigned int prl_count; /* # of entries in PRL */ +}; + +struct ip_tunnel_prl_entry { + struct ip_tunnel_prl_entry __rcu *next; + __be32 addr; + u16 flags; + struct rcu_head rcu_head; +}; + +#define __IPTUNNEL_XMIT(stats1, stats2) do { \ + int err; \ + int pkt_len = skb->len - skb_transport_offset(skb); \ + \ + skb->ip_summed = CHECKSUM_NONE; \ + ip_select_ident(iph, &rt->dst, NULL); \ + \ + err = ip_local_out(skb); \ + if (likely(net_xmit_eval(err) == 0)) { \ + (stats1)->tx_bytes += pkt_len; \ + (stats1)->tx_packets++; \ + } else { \ + (stats2)->tx_errors++; \ + (stats2)->tx_aborted_errors++; \ + } \ +} while (0) + +#define IPTUNNEL_XMIT() __IPTUNNEL_XMIT(txq, stats) + +#endif |