Commit 8d5ac871 authored by Arseny Krasnov's avatar Arseny Krasnov Committed by Michael S. Tsirkin
Browse files

virtio/vsock: support MSG_EOR bit processing 



If packet has 'EOR' bit - set MSG_EOR in 'recvmsg()' flags.

Signed-off-by: default avatarArseny Krasnov <arseny.krasnov@kaspersky.com>
Reviewed-by: default avatarStefano Garzarella <sgarzare@redhat.com>
Link: https://lore.kernel.org/r/20210903123251.3273639-1-arseny.krasnov@kaspersky.com


Signed-off-by: default avatarMichael S. Tsirkin <mst@redhat.com>
parent 1af7e555

net/vmw_vsock/virtio_transport_common.c

+8 −1
Original line number Diff line number Diff line
@@ -76,8 +76,12 @@ virtio_transport_alloc_pkt(struct virtio_vsock_pkt_info *info, 
			goto out;



		if (msg_data_left(info->msg) == 0 &&

		    info->type == VIRTIO_VSOCK_TYPE_SEQPACKET)

		    info->type == VIRTIO_VSOCK_TYPE_SEQPACKET) {

			pkt->hdr.flags |= cpu_to_le32(VIRTIO_VSOCK_SEQ_EOM);



			if (info->msg->msg_flags & MSG_EOR)

				pkt->hdr.flags |= cpu_to_le32(VIRTIO_VSOCK_SEQ_EOR);

		}

	}



	trace_virtio_transport_alloc_pkt(src_cid, src_port,
@@ -460,6 +464,9 @@ static int virtio_transport_seqpacket_do_dequeue(struct vsock_sock *vsk, 
		if (le32_to_cpu(pkt->hdr.flags) & VIRTIO_VSOCK_SEQ_EOM) {

			msg_ready = true;

			vvs->msg_count--;



			if (le32_to_cpu(pkt->hdr.flags) & VIRTIO_VSOCK_SEQ_EOR)

				msg->msg_flags |= MSG_EOR;

		}



		virtio_transport_dec_rx_pkt(vvs, pkt);