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authorPaolo Abeni <pabeni@redhat.com>2016-10-21 14:55:47 +0300
committerDavid S. Miller <davem@davemloft.net>2016-10-23 00:05:05 +0300
commit850cbaddb52dfd4e0c7cabe2c168dd34b44ae0b9 (patch)
treebdb5f6df459764e4a78d835200917d90c3330652 /net/sunrpc/xprtsock.c
parentf970bd9e3a06f06df8d8ecf1f8ad2c8615cc17eb (diff)
downloadlinux-850cbaddb52dfd4e0c7cabe2c168dd34b44ae0b9.tar.xz
udp: use it's own memory accounting schema
Completely avoid default sock memory accounting and replace it with udp-specific accounting. Since the new memory accounting model encapsulates completely the required locking, remove the socket lock on both enqueue and dequeue, and avoid using the backlog on enqueue. Be sure to clean-up rx queue memory on socket destruction, using udp its own sk_destruct. Tested using pktgen with random src port, 64 bytes packet, wire-speed on a 10G link as sender and udp_sink as the receiver, using an l4 tuple rxhash to stress the contention, and one or more udp_sink instances with reuseport. nr readers Kpps (vanilla) Kpps (patched) 1 170 440 3 1250 2150 6 3000 3650 9 4200 4450 12 5700 6250 v4 -> v5: - avoid unneeded test in first_packet_length v3 -> v4: - remove useless sk_rcvqueues_full() call v2 -> v3: - do not set the now unsed backlog_rcv callback v1 -> v2: - add memory pressure support - fixed dropwatch accounting for ipv6 Acked-by: Hannes Frederic Sowa <hannes@stressinduktion.org> Signed-off-by: Paolo Abeni <pabeni@redhat.com> Acked-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/sunrpc/xprtsock.c')
-rw-r--r--net/sunrpc/xprtsock.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/net/sunrpc/xprtsock.c b/net/sunrpc/xprtsock.c
index 0137af1c0916..1758665d609c 100644
--- a/net/sunrpc/xprtsock.c
+++ b/net/sunrpc/xprtsock.c
@@ -1083,7 +1083,7 @@ static void xs_udp_data_receive(struct sock_xprt *transport)
skb = skb_recv_datagram(sk, 0, 1, &err);
if (skb != NULL) {
xs_udp_data_read_skb(&transport->xprt, sk, skb);
- skb_free_datagram_locked(sk, skb);
+ consume_skb(skb);
continue;
}
if (!test_and_clear_bit(XPRT_SOCK_DATA_READY, &transport->sock_state))