diff options
| author | Yasuyuki Kozakai <yasuyuki.kozakai@toshiba.co.jp> | 2006-11-03 09:39:14 +0900 |
|---|---|---|
| committer | David S. Miller <davem@sunset.davemloft.net> | 2007-04-25 22:23:38 -0700 |
| commit | 8359925be8bb5960f614e3f25454f3ef7cc9df65 (patch) | |
| tree | 4dd61c55544be0d6d1522d9ec2a4ad61b860058b /net/ipv6/ip6_tunnel.c | |
| parent | e490d1d85cf5e191791979e5f260d32eb4f703a8 (diff) | |
| download | linux-8359925be8bb5960f614e3f25454f3ef7cc9df65.tar.gz | |
[IPV6] IP6TUNNEL: Split out generic routine in ip6ip6_rcv().
This enables to add IPv4/IPv6 specific handling later, Signed-off-by: Yasuyuki Kozakai <yasuyuki.kozakai@toshiba.co.jp> Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv6/ip6_tunnel.c')
| -rw-r--r-- | net/ipv6/ip6_tunnel.c | 34 |
1 files changed, 23 insertions, 11 deletions
diff --git a/net/ipv6/ip6_tunnel.c b/net/ipv6/ip6_tunnel.c index 6022fc5e557a..985d106dff6d 100644 --- a/net/ipv6/ip6_tunnel.c +++ b/net/ipv6/ip6_tunnel.c @@ -513,14 +513,17 @@ ip6ip6_err(struct sk_buff *skb, struct inet6_skb_parm *opt, return 0; } -static inline void ip6ip6_ecn_decapsulate(struct ipv6hdr *outer_iph, - struct sk_buff *skb) +static void ip6ip6_dscp_ecn_decapsulate(struct ip6_tnl *t, + struct ipv6hdr *ipv6h, + struct sk_buff *skb) { - struct ipv6hdr *inner_iph = skb->nh.ipv6h; + if (t->parms.flags & IP6_TNL_F_RCV_DSCP_COPY) + ipv6_copy_dscp(ipv6h, skb->nh.ipv6h); - if (INET_ECN_is_ce(ipv6_get_dsfield(outer_iph))) - IP6_ECN_set_ce(inner_iph); + if (INET_ECN_is_ce(ipv6_get_dsfield(ipv6h))) + IP6_ECN_set_ce(skb->nh.ipv6h); } + static inline int ip6_tnl_rcv_ctl(struct ip6_tnl *t) { struct ip6_tnl_parm *p = &t->parms; @@ -546,12 +549,16 @@ static inline int ip6_tnl_rcv_ctl(struct ip6_tnl *t) /** * ip6ip6_rcv - decapsulate IPv6 packet and retransmit it locally * @skb: received socket buffer + * @protocol: ethernet protocol ID + * @dscp_ecn_decapsulate: the function to decapsulate DSCP code and ECN * * Return: 0 **/ -static int -ip6ip6_rcv(struct sk_buff *skb) +static int ip6_tnl_rcv(struct sk_buff *skb, __u16 protocol, + void (*dscp_ecn_decapsulate)(struct ip6_tnl *t, + struct ipv6hdr *ipv6h, + struct sk_buff *skb)) { struct ipv6hdr *ipv6h; struct ip6_tnl *t; @@ -574,16 +581,16 @@ ip6ip6_rcv(struct sk_buff *skb) secpath_reset(skb); skb->mac.raw = skb->nh.raw; skb->nh.raw = skb->data; - skb->protocol = htons(ETH_P_IPV6); + skb->protocol = htons(protocol); skb->pkt_type = PACKET_HOST; memset(skb->cb, 0, sizeof(struct inet6_skb_parm)); skb->dev = t->dev; dst_release(skb->dst); skb->dst = NULL; nf_reset(skb); - if (t->parms.flags & IP6_TNL_F_RCV_DSCP_COPY) - ipv6_copy_dscp(ipv6h, skb->nh.ipv6h); - ip6ip6_ecn_decapsulate(ipv6h, skb); + + dscp_ecn_decapsulate(t, ipv6h, skb); + t->stat.rx_packets++; t->stat.rx_bytes += skb->len; netif_rx(skb); @@ -598,6 +605,11 @@ discard: return 0; } +static int ip6ip6_rcv(struct sk_buff *skb) +{ + return ip6_tnl_rcv(skb, ETH_P_IPV6, ip6ip6_dscp_ecn_decapsulate); +} + struct ipv6_tel_txoption { struct ipv6_txoptions ops; __u8 dst_opt[8]; |