Commit 8359925b authored by Yasuyuki Kozakai's avatar Yasuyuki Kozakai Committed by David S. Miller
Browse files

[IPV6] IP6TUNNEL: Split out generic routine in ip6ip6_rcv().

This enables to add IPv4/IPv6 specific handling later,
Signed-off-by: default avatarYasuyuki Kozakai <>
Signed-off-by: default avatarYOSHIFUJI Hideaki <>
Signed-off-by: default avatarDavid S. Miller <>
parent e490d1d8
......@@ -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)))
if (INET_ECN_is_ce(ipv6_get_dsfield(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)
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;
skb->dst = NULL;
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_bytes += skb->len;
......@@ -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];
Markdown is supported
0% or .
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment