diff options
| author | Daniel Lezcano <dlezcano@fr.ibm.com> | 2008-03-07 11:16:02 -0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2008-03-07 11:16:02 -0800 |
| commit | 93ec926b075d14bb7edcbc054e92199e9ad4ad1d (patch) | |
| tree | 7899be4a1f6e45199e80a324a9e9af8b582b5fb3 /net/ipv6 | |
| parent | 1762f7e88eb34f653b4a915be99a102e347dd45e (diff) | |
[NETNS][IPV6] tcp6 - make socket control per namespace
Instead of having a tcp6_socket global to all the namespace, there is
tcp6 socket control per namespace. That is consistent with which
namespace sent a RST and allows to pass the socket to the underlying
function to retrieve the 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>
Diffstat (limited to 'net/ipv6')
| -rw-r--r-- | net/ipv6/tcp_ipv6.c | 43 |
1 files changed, 33 insertions, 10 deletions
diff --git a/net/ipv6/tcp_ipv6.c b/net/ipv6/tcp_ipv6.c index b47cce8fea4..7954b4e99c4 100644 --- a/net/ipv6/tcp_ipv6.c +++ b/net/ipv6/tcp_ipv6.c @@ -69,9 +69,6 @@ #include <linux/crypto.h> #include <linux/scatterlist.h> -/* Socket used for sending RSTs and ACKs */ -static struct socket *tcp6_socket; - static void tcp_v6_send_reset(struct sock *sk, struct sk_buff *skb); static void tcp_v6_reqsk_send_ack(struct sk_buff *skb, struct request_sock *req); static void tcp_v6_send_check(struct sock *sk, int len, @@ -1075,10 +1072,11 @@ static void tcp_v6_send_reset(struct sock *sk, struct sk_buff *skb) * Underlying function will use this to retrieve the network * namespace */ - if (!ip6_dst_lookup(tcp6_socket->sk, &buff->dst, &fl)) { + if (!ip6_dst_lookup(init_net.ipv6.tcp_sk, &buff->dst, &fl)) { if (xfrm_lookup(&buff->dst, &fl, NULL, 0) >= 0) { - ip6_xmit(tcp6_socket->sk, buff, &fl, NULL, 0); + ip6_xmit(init_net.ipv6.tcp_sk, + buff, &fl, NULL, 0); TCP_INC_STATS_BH(TCP_MIB_OUTSEGS); TCP_INC_STATS_BH(TCP_MIB_OUTRSTS); return; @@ -1175,9 +1173,10 @@ static void tcp_v6_send_ack(struct tcp_timewait_sock *tw, fl.fl_ip_sport = t1->source; security_skb_classify_flow(skb, &fl); - if (!ip6_dst_lookup(tcp6_socket->sk, &buff->dst, &fl)) { + if (!ip6_dst_lookup(init_net.ipv6.tcp_sk, &buff->dst, &fl)) { if (xfrm_lookup(&buff->dst, &fl, NULL, 0) >= 0) { - ip6_xmit(tcp6_socket->sk, buff, &fl, NULL, 0); + ip6_xmit(init_net.ipv6.tcp_sk, + buff, &fl, NULL, 0); TCP_INC_STATS_BH(TCP_MIB_OUTSEGS); return; } @@ -2198,6 +2197,31 @@ static struct inet_protosw tcpv6_protosw = { INET_PROTOSW_ICSK, }; +static int tcpv6_net_init(struct net *net) +{ + int err; + struct socket *sock; + struct sock *sk; + + err = inet_csk_ctl_sock_create(&sock, PF_INET6, SOCK_RAW, IPPROTO_TCP); + if (err) + return err; + + net->ipv6.tcp_sk = sk = sock->sk; + sk_change_net(sk, net); + return err; +} + +static void tcpv6_net_exit(struct net *net) +{ + sk_release_kernel(net->ipv6.tcp_sk); +} + +static struct pernet_operations tcpv6_net_ops = { + .init = tcpv6_net_init, + .exit = tcpv6_net_exit, +}; + int __init tcpv6_init(void) { int ret; @@ -2211,8 +2235,7 @@ int __init tcpv6_init(void) if (ret) goto out_tcpv6_protocol; - ret = inet_csk_ctl_sock_create(&tcp6_socket, PF_INET6, - SOCK_RAW, IPPROTO_TCP); + ret = register_pernet_subsys(&tcpv6_net_ops); if (ret) goto out_tcpv6_protosw; out: @@ -2227,7 +2250,7 @@ out_tcpv6_protosw: void tcpv6_exit(void) { - sock_release(tcp6_socket); + unregister_pernet_subsys(&tcpv6_net_ops); inet6_unregister_protosw(&tcpv6_protosw); inet6_del_protocol(&tcpv6_protocol, IPPROTO_TCP); } |