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authorChris Leech <christopher.leech@intel.com>2006-05-24 01:05:53 (GMT)
committerDavid S. Miller <davem@sunset.davemloft.net>2006-06-18 04:25:56 (GMT)
commit1a2449a87bb7606113b1aa1a9d3c3e78ef189a1c (patch)
tree86e833a8694f201de138697646e7e8469e9c8ef6 /net/ipv6
parent9593782585e0cf70babe787a8463d492a68b1744 (diff)
downloadlinux-1a2449a87bb7606113b1aa1a9d3c3e78ef189a1c.tar.xz
[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 <christopher.leech@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv6')
-rw-r--r--net/ipv6/tcp_ipv6.c12
1 files changed, 10 insertions, 2 deletions
diff --git a/net/ipv6/tcp_ipv6.c b/net/ipv6/tcp_ipv6.c
index 301eee7..a50eb30 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);