path: root/net/ipv4/tcp_ipv4.c
diff options
authorDavid Ahern <dsahern@gmail.com>2017-08-07 08:44:17 -0700
committerDavid S. Miller <davem@davemloft.net>2017-08-07 11:39:21 -0700
commit3fa6f616a7a4d0bdf4d877d530456d8a5c3b109b (patch)
treed59b0df380b5f2b8d54356a47950fac577e8ef3c /net/ipv4/tcp_ipv4.c
parentnet: ipv4: add second dif to udp socket lookups (diff)
net: ipv4: add second dif to inet socket lookups
Add a second device index, sdif, to inet socket lookups. sdif is the index for ingress devices enslaved to an l3mdev. It allows the lookups to consider the enslaved device as well as the L3 domain when searching for a socket. TCP moves the data in the cb. Prior to tcp_v4_rcv (e.g., early demux) the ingress index is obtained from IPCB using inet_sdif and after the cb move in tcp_v4_rcv the tcp_v4_sdif helper is used. Signed-off-by: David Ahern <dsahern@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4/tcp_ipv4.c')
1 files changed, 8 insertions, 5 deletions
diff --git a/net/ipv4/tcp_ipv4.c b/net/ipv4/tcp_ipv4.c
index 5f708c85110e..c8784ab37852 100644
--- a/net/ipv4/tcp_ipv4.c
+++ b/net/ipv4/tcp_ipv4.c
@@ -383,7 +383,7 @@ void tcp_v4_err(struct sk_buff *icmp_skb, u32 info)
sk = __inet_lookup_established(net, &tcp_hashinfo, iph->daddr,
th->dest, iph->saddr, ntohs(th->source),
- inet_iif(icmp_skb));
+ inet_iif(icmp_skb), 0);
if (!sk) {
@@ -659,7 +659,8 @@ static void tcp_v4_send_reset(const struct sock *sk, struct sk_buff *skb)
sk1 = __inet_lookup_listener(net, &tcp_hashinfo, NULL, 0,
th->source, ip_hdr(skb)->daddr,
- ntohs(th->source), inet_iif(skb));
+ ntohs(th->source), inet_iif(skb),
+ tcp_v4_sdif(skb));
/* don't send rst if it can't find key */
if (!sk1)
goto out;
@@ -1523,7 +1524,7 @@ void tcp_v4_early_demux(struct sk_buff *skb)
sk = __inet_lookup_established(dev_net(skb->dev), &tcp_hashinfo,
iph->saddr, th->source,
iph->daddr, ntohs(th->dest),
- skb->skb_iif);
+ skb->skb_iif, inet_sdif(skb));
if (sk) {
skb->sk = sk;
skb->destructor = sock_edemux;
@@ -1588,6 +1589,7 @@ EXPORT_SYMBOL(tcp_filter);
int tcp_v4_rcv(struct sk_buff *skb)
struct net *net = dev_net(skb->dev);
+ int sdif = inet_sdif(skb);
const struct iphdr *iph;
const struct tcphdr *th;
bool refcounted;
@@ -1638,7 +1640,7 @@ int tcp_v4_rcv(struct sk_buff *skb)
sk = __inet_lookup_skb(&tcp_hashinfo, skb, __tcp_hdrlen(th), th->source,
- th->dest, &refcounted);
+ th->dest, sdif, &refcounted);
if (!sk)
goto no_tcp_socket;
@@ -1766,7 +1768,8 @@ do_time_wait:
iph->saddr, th->source,
iph->daddr, th->dest,
- inet_iif(skb));
+ inet_iif(skb),
+ sdif);
if (sk2) {
sk = sk2;