[NETNS][IPV6] tcp6 - handle several network namespace
We have the right network namespace at the right place now.
So make use of this information to make tcp6 per network namespace
Signed-off-by: Daniel Lezcano <dlezcano@fr.ibm.com>
Signed-off-by: Benjamin Thery <benjamin.thery@bull.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/ipv6/tcp_ipv6.c b/net/ipv6/tcp_ipv6.c
index 7954b4e..caf0cc1 100644
--- a/net/ipv6/tcp_ipv6.c
+++ b/net/ipv6/tcp_ipv6.c
@@ -988,6 +988,8 @@
struct tcphdr *th = tcp_hdr(skb), *t1;
struct sk_buff *buff;
struct flowi fl;
+ struct net *net = skb->dst->dev->nd_net;
+ struct sock *ctl_sk = net->ipv6.tcp_sk;
unsigned int tot_len = sizeof(*th);
#ifdef CONFIG_TCP_MD5SIG
struct tcp_md5sig_key *key;
@@ -1072,11 +1074,10 @@
* Underlying function will use this to retrieve the network
* namespace
*/
- if (!ip6_dst_lookup(init_net.ipv6.tcp_sk, &buff->dst, &fl)) {
+ if (!ip6_dst_lookup(ctl_sk, &buff->dst, &fl)) {
if (xfrm_lookup(&buff->dst, &fl, NULL, 0) >= 0) {
- ip6_xmit(init_net.ipv6.tcp_sk,
- buff, &fl, NULL, 0);
+ ip6_xmit(ctl_sk, buff, &fl, NULL, 0);
TCP_INC_STATS_BH(TCP_MIB_OUTSEGS);
TCP_INC_STATS_BH(TCP_MIB_OUTRSTS);
return;
@@ -1092,6 +1093,8 @@
struct tcphdr *th = tcp_hdr(skb), *t1;
struct sk_buff *buff;
struct flowi fl;
+ struct net *net = skb->dev->nd_net;
+ struct sock *ctl_sk = net->ipv6.tcp_sk;
unsigned int tot_len = sizeof(struct tcphdr);
__be32 *topt;
#ifdef CONFIG_TCP_MD5SIG
@@ -1173,10 +1176,9 @@
fl.fl_ip_sport = t1->source;
security_skb_classify_flow(skb, &fl);
- if (!ip6_dst_lookup(init_net.ipv6.tcp_sk, &buff->dst, &fl)) {
+ if (!ip6_dst_lookup(ctl_sk, &buff->dst, &fl)) {
if (xfrm_lookup(&buff->dst, &fl, NULL, 0) >= 0) {
- ip6_xmit(init_net.ipv6.tcp_sk,
- buff, &fl, NULL, 0);
+ ip6_xmit(ctl_sk, buff, &fl, NULL, 0);
TCP_INC_STATS_BH(TCP_MIB_OUTSEGS);
return;
}