leandrof/linux
1
0
Fork 0
forked from Minki/linux
Code Issues Pull Requests Packages Projects Releases Wiki Activity

virtio/vsock: rename 'EOR' to 'EOM' bit.

Browse Source 
This current implemented bit is used to mark end of messages
('EOM' - end of message), not records('EOR' - end of record).
Also rename 'record' to 'message' in implementation as it is
different things.

Signed-off-by: Arseny Krasnov <arseny.krasnov@kaspersky.com>
Reviewed-by: Stefano Garzarella <sgarzare@redhat.com>
Link: https://lore.kernel.org/r/20210903123109.3273053-1-arseny.krasnov@kaspersky.com
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Arseny Krasnov 2021-09-03 15:31:06 +03:00 committed by Michael S. Tsirkin
parent 694a1116b4
commit 9af8f10616
3 changed files with 14 additions and 14 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

12
drivers/vhost/vsock.c
View File

@ -178,15 +178,15 @@ vhost_transport_do_send_pkt(struct vhost_vsock *vsock,
* small rx buffers, headers of packets in rx queue are
* created dynamically and are initialized with header
* of current packet(except length). But in case of
* SOCK_SEQPACKET, we also must clear record delimeter
* bit(VIRTIO_VSOCK_SEQ_EOR). Otherwise, instead of one
* packet with delimeter(which marks end of record),
* SOCK_SEQPACKET, we also must clear message delimeter
* bit(VIRTIO_VSOCK_SEQ_EOM). Otherwise, instead of one
* packet with delimeter(which marks end of message),
* there will be sequence of packets with delimeter
* bit set. After initialized header will be copied to
* rx buffer, this bit will be restored.
*/
if (le32_to_cpu(pkt->hdr.flags) & VIRTIO_VSOCK_SEQ_EOR) {
pkt->hdr.flags &= ~cpu_to_le32(VIRTIO_VSOCK_SEQ_EOR);
if (le32_to_cpu(pkt->hdr.flags) & VIRTIO_VSOCK_SEQ_EOM) {
pkt->hdr.flags &= ~cpu_to_le32(VIRTIO_VSOCK_SEQ_EOM);
restore_flag = true;
}
}
@ -225,7 +225,7 @@ vhost_transport_do_send_pkt(struct vhost_vsock *vsock,
*/
if (pkt->off < pkt->len) {
if (restore_flag)
pkt->hdr.flags |= cpu_to_le32(VIRTIO_VSOCK_SEQ_EOR);
pkt->hdr.flags |= cpu_to_le32(VIRTIO_VSOCK_SEQ_EOM);
/* We are queueing the same virtio_vsock_pkt to handle
* the remaining bytes, and we want to deliver it

2
include/uapi/linux/virtio_vsock.h
View File

@ -97,7 +97,7 @@ enum virtio_vsock_shutdown {
/* VIRTIO_VSOCK_OP_RW flags values */
enum virtio_vsock_rw {
VIRTIO_VSOCK_SEQ_EOR = 1,
VIRTIO_VSOCK_SEQ_EOM = 1,
};
#endif /* _UAPI_LINUX_VIRTIO_VSOCK_H */

14
net/vmw_vsock/virtio_transport_common.c
View File

@ -77,7 +77,7 @@ virtio_transport_alloc_pkt(struct virtio_vsock_pkt_info *info,
if (msg_data_left(info->msg) == 0 &&
info->type == VIRTIO_VSOCK_TYPE_SEQPACKET)
pkt->hdr.flags |= cpu_to_le32(VIRTIO_VSOCK_SEQ_EOR);
pkt->hdr.flags |= cpu_to_le32(VIRTIO_VSOCK_SEQ_EOM);
}
trace_virtio_transport_alloc_pkt(src_cid, src_port,
@ -457,7 +457,7 @@ static int virtio_transport_seqpacket_do_dequeue(struct vsock_sock *vsk,
dequeued_len += pkt_len;
}
if (le32_to_cpu(pkt->hdr.flags) & VIRTIO_VSOCK_SEQ_EOR) {
if (le32_to_cpu(pkt->hdr.flags) & VIRTIO_VSOCK_SEQ_EOM) {
msg_ready = true;
vvs->msg_count--;
}
@ -1029,7 +1029,7 @@ virtio_transport_recv_enqueue(struct vsock_sock *vsk,
goto out;
}
if (le32_to_cpu(pkt->hdr.flags) & VIRTIO_VSOCK_SEQ_EOR)
if (le32_to_cpu(pkt->hdr.flags) & VIRTIO_VSOCK_SEQ_EOM)
vvs->msg_count++;
/* Try to copy small packets into the buffer of last packet queued,
@ -1044,12 +1044,12 @@ virtio_transport_recv_enqueue(struct vsock_sock *vsk,
/* If there is space in the last packet queued, we copy the
* new packet in its buffer. We avoid this if the last packet
* queued has VIRTIO_VSOCK_SEQ_EOR set, because this is
* delimiter of SEQPACKET record, so 'pkt' is the first packet
* of a new record.
* queued has VIRTIO_VSOCK_SEQ_EOM set, because this is
* delimiter of SEQPACKET message, so 'pkt' is the first packet
* of a new message.
*/
if ((pkt->len <= last_pkt->buf_len - last_pkt->len) &&
!(le32_to_cpu(last_pkt->hdr.flags) & VIRTIO_VSOCK_SEQ_EOR)) {
!(le32_to_cpu(last_pkt->hdr.flags) & VIRTIO_VSOCK_SEQ_EOM)) {
memcpy(last_pkt->buf + last_pkt->len, pkt->buf,
pkt->len);
last_pkt->len += pkt->len;