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authorArseny Krasnov <arseny.krasnov@kaspersky.com>2021-09-03 15:32:48 +0300
committerMichael S. Tsirkin <mst@redhat.com>2021-09-05 16:23:09 -0400
commit8d5ac871b556c73b042438dc1c811c554dadca52 (patch)
tree7d458c2f0b1eca5f547580c649095404d2835f44 /net/vmw_vsock
parent1af7e55511fe194a07f3fa4e77b5b9d10bdd9208 (diff)
downloadlinux-8d5ac871b556c73b042438dc1c811c554dadca52.tar.bz2
virtio/vsock: support MSG_EOR bit processing
If packet has 'EOR' bit - set MSG_EOR in 'recvmsg()' flags. Signed-off-by: Arseny Krasnov <arseny.krasnov@kaspersky.com> Reviewed-by: Stefano Garzarella <sgarzare@redhat.com> Link: https://lore.kernel.org/r/20210903123251.3273639-1-arseny.krasnov@kaspersky.com Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Diffstat (limited to 'net/vmw_vsock')
-rw-r--r--net/vmw_vsock/virtio_transport_common.c9
1 files changed, 8 insertions, 1 deletions
diff --git a/net/vmw_vsock/virtio_transport_common.c b/net/vmw_vsock/virtio_transport_common.c
index 4d5a93beceb0..59ee1be5a6dd 100644
--- a/net/vmw_vsock/virtio_transport_common.c
+++ b/net/vmw_vsock/virtio_transport_common.c
@@ -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);