From ddb61a57bb6df673986e6476407f97d28b02031f Mon Sep 17 00:00:00 2001 From: Jens Axboe Date: Sat, 23 Jun 2007 23:07:50 -0700 Subject: [PATCH] [TCP] tcp_read_sock: Allow recv_actor() return return negative error value. tcp_read_sock() currently assumes that the recv_actor() only returns number of bytes copied. For network splice receive, we may have to return an error in some cases. So allow the actor to return a negative error value. Signed-off-by: Jens Axboe Signed-off-by: David S. Miller --- net/ipv4/tcp.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c index cd3c7e95de9e..450f44bb2c8e 100644 --- a/net/ipv4/tcp.c +++ b/net/ipv4/tcp.c @@ -1064,7 +1064,11 @@ int tcp_read_sock(struct sock *sk, read_descriptor_t *desc, break; } used = recv_actor(desc, skb, offset, len); - if (used <= len) { + if (used < 0) { + if (!copied) + copied = used; + break; + } else if (used <= len) { seq += used; copied += used; offset += used; @@ -1086,7 +1090,7 @@ int tcp_read_sock(struct sock *sk, read_descriptor_t *desc, tcp_rcv_space_adjust(sk); /* Clean up data we have read: This will do ACK frames. */ - if (copied) + if (copied > 0) tcp_cleanup_rbuf(sk, copied); return copied; } -- 2.20.1