Commit 7c81e6a9 authored by Trond Myklebust's avatar Trond Myklebust Committed by Anna Schumaker
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SUNRPC: Tweak TCP socket shutdown in the RPC client 



We only really need to call shutdown() if we're in the ESTABLISHED TCP
state, since that is the only case where the client is initiating a
close of an established connection.

If the socket is in FIN_WAIT1 or FIN_WAIT2, then we've already initiated
socket shutdown and are waiting for the server's reply, so do nothing.

In all other cases where we've already received a FIN from the server,
we should be able to just close the socket.

Signed-off-by: default avatarTrond Myklebust <trond.myklebust@hammerspace.com>
Signed-off-by: default avatarAnna Schumaker <Anna.Schumaker@Netapp.com>
parent 0a6ff58e

net/sunrpc/xprtsock.c

+6 −3
Original line number Diff line number Diff line
@@ -2104,12 +2104,15 @@ static void xs_tcp_shutdown(struct rpc_xprt *xprt) 
		return;

	}

	switch (skst) {

	default:

	case TCP_FIN_WAIT1:

	case TCP_FIN_WAIT2:

		break;

	case TCP_ESTABLISHED:

	case TCP_CLOSE_WAIT:

		kernel_sock_shutdown(sock, SHUT_RDWR);

		trace_rpc_socket_shutdown(xprt, sock);

		break;

	case TCP_CLOSE:

	case TCP_TIME_WAIT:

	default:

		xs_reset_transport(transport);

	}

}