| Message ID | 2eb7a9afd12bce54668813df849c6ba2319bc828.1594287359.git.sd@queasysnail.net |
|---|---|
| State | Awaiting Upstream |
| Delegated to: | David Miller |
| Headers | show |
| Series | xfrm: a few fixes for espintcp | expand |
diff --git a/net/xfrm/espintcp.c b/net/xfrm/espintcp.c index 5d3d2b98c62d..cb83e3664680 100644 --- a/net/xfrm/espintcp.c +++ b/net/xfrm/espintcp.c @@ -109,8 +109,11 @@ static int espintcp_recvmsg(struct sock *sk, struct msghdr *msg, size_t len, flags |= nonblock ? MSG_DONTWAIT : 0; skb = __skb_recv_datagram(sk, &ctx->ike_queue, flags, &off, &err); - if (!skb) + if (!skb) { + if (err == -EAGAIN && sk->sk_shutdown & RCV_SHUTDOWN) + return 0; return err; + } copied = len; if (copied > skb->len)
man 2 recv says: RETURN VALUE When a stream socket peer has performed an orderly shutdown, the return value will be 0 (the traditional "end-of-file" return). Currently, this works for blocking reads, but non-blocking reads will return -EAGAIN. This patch overwrites that return value when the peer won't send us any more data. Fixes: e27cca96cd68 ("xfrm: add espintcp (RFC 8229)") Reported-by: Andrew Cagney <cagney@libreswan.org> Tested-by: Andrew Cagney <cagney@libreswan.org> Signed-off-by: Sabrina Dubroca <sd@queasysnail.net> --- net/xfrm/espintcp.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-)