lkml.org 
[lkml]   [2021]   [Jul]   [26]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[RFC PATCH v1 3/7] vhost/vsock: support MSG_EOR bit processing
Date
It works in the same way as 'end-of-message' bit: if packet has
'EOM' bit, also check for 'EOR' bit.

Signed-off-by: Arseny Krasnov <arseny.krasnov@kaspersky.com>
---
drivers/vhost/vsock.c | 12 +++++++++++-
1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/drivers/vhost/vsock.c b/drivers/vhost/vsock.c
index 3b55de70ac77..3e2b150f9c6f 100644
--- a/drivers/vhost/vsock.c
+++ b/drivers/vhost/vsock.c
@@ -115,6 +115,7 @@ vhost_transport_do_send_pkt(struct vhost_vsock *vsock,
size_t iov_len, payload_len;
int head;
bool restore_msg_eom_flag = false;
+ bool restore_msg_eor_flag = false;

spin_lock_bh(&vsock->send_pkt_list_lock);
if (list_empty(&vsock->send_pkt_list)) {
@@ -188,6 +189,11 @@ vhost_transport_do_send_pkt(struct vhost_vsock *vsock,
if (le32_to_cpu(pkt->hdr.flags) & VIRTIO_VSOCK_SEQ_EOM) {
pkt->hdr.flags &= ~cpu_to_le32(VIRTIO_VSOCK_SEQ_EOM);
restore_msg_eom_flag = true;
+
+ if (le32_to_cpu(pkt->hdr.flags & VIRTIO_VSOCK_SEQ_EOR)) {
+ pkt->hdr.flags &= ~cpu_to_le32(VIRTIO_VSOCK_SEQ_EOR);
+ restore_msg_eor_flag = true;
+ }
}
}

@@ -224,9 +230,13 @@ vhost_transport_do_send_pkt(struct vhost_vsock *vsock,
* to send it with the next available buffer.
*/
if (pkt->off < pkt->len) {
- if (restore_msg_eom_flag)
+ if (restore_msg_eom_flag) {
pkt->hdr.flags |= cpu_to_le32(VIRTIO_VSOCK_SEQ_EOM);

+ if (restore_msg_eor_flag)
+ pkt->hdr.flags |= cpu_to_le32(VIRTIO_VSOCK_SEQ_EOR);
+ }
+
/* We are queueing the same virtio_vsock_pkt to handle
* the remaining bytes, and we want to deliver it
* to monitoring devices in the next iteration.
--
2.25.1
\
 
 \ /
  Last update: 2021-07-26 18:40    [W:0.299 / U:0.412 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site