[PATCH net 1/2] vsock: add half-closed socket details in the implementation notes

From: Stefano Garzarella <sgarzare@redhat.com>
To: netdev@vger.kernel.org
Cc: kvm@vger.kernel.org, "Michael S. Tsirkin" <mst@redhat.com>,
	linux-kernel@vger.kernel.org, Adit Ranadive <aditr@vmware.com>,
	Stefan Hajnoczi <stefanha@redhat.com>,
	virtualization@lists.linux-foundation.org,
	"David S. Miller" <davem@davemloft.net>,
	Jorgen Hansen <jhansen@vmware.com>
Subject: [PATCH net 1/2] vsock: add half-closed socket details in the implementation notes
Date: Fri, 11 Oct 2019 15:07:57 +0200	[thread overview]
Message-ID: <20191011130758.22134-2-sgarzare__44459.8469812021$1570799985$gmane$org@redhat.com> (raw)
In-Reply-To: <20191011130758.22134-1-sgarzare@redhat.com>

vmci_transport never allowed half-closed socket on the host side.
Since we want to have the same behaviour across all transports, we
add a section in the "Implementation notes".

Cc: Jorgen Hansen <jhansen@vmware.com>
Cc: Adit Ranadive <aditr@vmware.com>
Signed-off-by: Stefano Garzarella <sgarzare@redhat.com>
---
 net/vmw_vsock/af_vsock.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/net/vmw_vsock/af_vsock.c b/net/vmw_vsock/af_vsock.c
index 2ab43b2bba31..27df57c2024b 100644
--- a/net/vmw_vsock/af_vsock.c
+++ b/net/vmw_vsock/af_vsock.c
@@ -83,6 +83,10 @@
  *   TCP_ESTABLISHED - connected
  *   TCP_CLOSING - disconnecting
  *   TCP_LISTEN - listening
+ *
+ * - Half-closed socket is supported only on the guest side. recv() on the host
+ * side should return EOF when the guest closes a connection, also if some
+ * data is still in the receive queue.
  */
 
 #include <linux/types.h>
-- 
2.21.0
