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virtio/vsock: support MSG_EOR bit processing

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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>
This commit is contained in:
Arseny Krasnov 2021-09-03 15:32:48 +03:00 committed by Michael S. Tsirkin
parent 1af7e55511
commit 8d5ac871b5
1 changed files with 8 additions and 1 deletions
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9
net/vmw_vsock/virtio_transport_common.c
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@ -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);