From 1a2449a87bb7606113b1aa1a9d3c3e78ef189a1c Mon Sep 17 00:00:00 2001 From: Chris Leech Date: Tue, 23 May 2006 18:05:53 -0700 Subject: [I/OAT]: TCP recv offload to I/OAT Locks down user pages and sets up for DMA in tcp_recvmsg, then calls dma_async_try_early_copy in tcp_v4_do_rcv Signed-off-by: Chris Leech Signed-off-by: David S. Miller --- net/ipv6/tcp_ipv6.c | 12 ++++++++++-- 1 file changed, 10 insertions(+), 2 deletions(-) (limited to 'net/ipv6') diff --git a/net/ipv6/tcp_ipv6.c b/net/ipv6/tcp_ipv6.c index 301eee726b0f..a50eb306e9e2 100644 --- a/net/ipv6/tcp_ipv6.c +++ b/net/ipv6/tcp_ipv6.c @@ -1218,8 +1218,16 @@ process: bh_lock_sock(sk); ret = 0; if (!sock_owned_by_user(sk)) { - if (!tcp_prequeue(sk, skb)) - ret = tcp_v6_do_rcv(sk, skb); +#ifdef CONFIG_NET_DMA + struct tcp_sock *tp = tcp_sk(sk); + if (tp->ucopy.dma_chan) + ret = tcp_v6_do_rcv(sk, skb); + else +#endif + { + if (!tcp_prequeue(sk, skb)) + ret = tcp_v6_do_rcv(sk, skb); + } } else sk_add_backlog(sk, skb); bh_unlock_sock(sk); -- cgit v1.2.3