| Message ID | 1380656025-8847-2-git-send-email-sbohrer@rgmadvisors.com |
|---|---|
| State | Changes Requested, archived |
| Delegated to: | David Miller |
| Headers | show |
On Tue, 2013-10-01 at 14:33 -0500, Shawn Bohrer wrote: > 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> Thanks for following up, it seems I forgot to submit this patch ;) -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
diff --git a/net/ipv4/udp.c b/net/ipv4/udp.c index 728ce95..1982a03 100644 --- a/net/ipv4/udp.c +++ b/net/ipv4/udp.c @@ -1405,8 +1405,10 @@ static int __udp_queue_rcv_skb(struct sock *sk, struct sk_buff *skb) { int rc; - if (inet_sk(sk)->inet_daddr) + if (inet_sk(sk)->inet_daddr) { sock_rps_save_rxhash(sk, skb); + sk_mark_napi_id(sk, skb); + } rc = sock_queue_rcv_skb(sk, skb); if (rc < 0) { @@ -1716,7 +1718,6 @@ int __udp4_lib_rcv(struct sk_buff *skb, struct udp_table *udptable, if (sk != NULL) { int ret; - sk_mark_napi_id(sk, skb); ret = udp_queue_rcv_skb(sk, skb); sock_put(sk); diff --git a/net/ipv6/udp.c b/net/ipv6/udp.c index f405815..84e18ab 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);
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> --- net/ipv4/udp.c | 5 +++-- net/ipv6/udp.c | 5 +++-- 2 files changed, 6 insertions(+), 4 deletions(-)