diff options
| author | Shawn Bohrer <sbohrer@rgmadvisors.com> | 2013-10-07 11:01:38 -0500 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2013-10-08 16:27:33 -0400 |
| commit | 005ec9743394010cd37d86c3fd2e81978231cdbf (patch) | |
| tree | 2d551f452fbb3cd1aa0ffb3443abf217dee22549 /net/ipv6/udp.c | |
| parent | 2c8c8e6f9d534a77f97df4d7148561cb902c0f83 (diff) | |
udp: Only allow busy read/poll on connected sockets
UDP sockets can receive packets from multiple endpoints and thus may be
received on multiple receive queues. Since packets packets can arrive
on multiple receive queues we should not mark the napi_id for all
packets. This makes busy read/poll only work for connected UDP sockets.
This additionally enables busy read/poll for UDP multicast packets as
long as the socket is connected by moving the check into
__udp_queue_rcv_skb().
Signed-off-by: Shawn Bohrer <sbohrer@rgmadvisors.com>
Suggested-by: Eric Dumazet <edumazet@google.com>
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv6/udp.c')
| -rw-r--r-- | net/ipv6/udp.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/net/ipv6/udp.c b/net/ipv6/udp.c index 8119791e8a95..37532478e3ba 100644 --- a/net/ipv6/udp.c +++ b/net/ipv6/udp.c @@ -549,8 +549,10 @@ static int __udpv6_queue_rcv_skb(struct sock *sk, struct sk_buff *skb) { int rc; - if (!ipv6_addr_any(&inet6_sk(sk)->daddr)) + if (!ipv6_addr_any(&inet6_sk(sk)->daddr)) { sock_rps_save_rxhash(sk, skb); + sk_mark_napi_id(sk, skb); + } rc = sock_queue_rcv_skb(sk, skb); if (rc < 0) { @@ -844,7 +846,6 @@ int __udp6_lib_rcv(struct sk_buff *skb, struct udp_table *udptable, if (sk != NULL) { int ret; - sk_mark_napi_id(sk, skb); ret = udpv6_queue_rcv_skb(sk, skb); sock_put(sk); |