From: Stefano Garzarella <sgarzare@redhat.com>
To: Arseny Krasnov <arseny.krasnov@kaspersky.com>
Cc: Stefan Hajnoczi <stefanha@redhat.com>,
"Michael S. Tsirkin" <mst@redhat.com>,
Jason Wang <jasowang@redhat.com>,
"David S. Miller" <davem@davemloft.net>,
Jakub Kicinski <kuba@kernel.org>,
Norbert Slusarek <nslusarek@gmx.net>,
Andra Paraschiv <andraprs@amazon.com>,
Colin Ian King <colin.king@canonical.com>,
kvm@vger.kernel.org, virtualization@lists.linux-foundation.org,
netdev@vger.kernel.org, linux-kernel@vger.kernel.org,
oxffffaa@gmail.com
Subject: Re: [RFC PATCH v1 3/7] vhost/vsock: support MSG_EOR bit processing
Date: Fri, 6 Aug 2021 09:28:49 +0200 [thread overview]
Message-ID: <20210806072849.4by3wbdkg2bsierm@steredhat> (raw)
In-Reply-To: <20210726163341.2589759-1-arseny.krasnov@kaspersky.com>
On Mon, Jul 26, 2021 at 07:33:38PM +0300, Arseny Krasnov wrote:
>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;
Since we now have 2 flags to potentially restore, we could use a single
variable (e.g. uint32_t flags_to_restore), initialized to 0.
We can set all the flags we need to restore and then simply put it
in or with the `pkt->hdr.flags` field.
> 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)) {
^
Here it should be `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);
>+ }
>+
If we use a single variable, here we can simply do:
pkt->hdr.flags |= cpu_to_le32(flags_to_restore);
Stefano
next prev parent reply other threads:[~2021-08-06 7:28 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-07-26 16:31 [RFC PATCH v1 0/7] virtio/vsock: introduce MSG_EOR flag for SEQPACKET Arseny Krasnov
2021-07-26 16:33 ` [RFC PATCH v1 1/7] virtio/vsock: add 'VIRTIO_VSOCK_SEQ_EOM' bit Arseny Krasnov
2021-08-06 7:18 ` Stefano Garzarella
2021-07-26 16:33 ` [RFC PATCH v1 2/7] vsock: rename implementation from 'record' to 'message' Arseny Krasnov
2021-08-06 7:20 ` Stefano Garzarella
2021-07-26 16:33 ` [RFC PATCH v1 3/7] vhost/vsock: support MSG_EOR bit processing Arseny Krasnov
2021-08-06 7:28 ` Stefano Garzarella [this message]
2021-08-06 8:40 ` Arseny Krasnov
2021-08-06 8:47 ` Stefano Garzarella
2021-07-26 16:33 ` [RFC PATCH v1 4/7] virito/vsock: " Arseny Krasnov
2021-07-26 16:34 ` [RFC PATCH v1 5/7] af_vsock: rename variables in receive loop Arseny Krasnov
2021-07-26 16:34 ` [RFC PATCH v1 6/7] vsock_test: update message bounds test for MSG_EOR Arseny Krasnov
2021-07-26 16:34 ` [RFC PATCH v1 7/7] vsock_test: 'SO_RCVTIMEO' test for SEQPACKET Arseny Krasnov
2021-07-27 7:59 ` [RFC PATCH v1 0/7] virtio/vsock: introduce MSG_EOR flag " Stefano Garzarella
2021-07-27 9:34 ` [MASSMAIL KLMS] " Arseny Krasnov
2021-07-27 9:58 ` Stefano Garzarella
2021-07-27 12:35 ` [MASSMAIL KLMS] " Arseny Krasnov
2021-08-04 12:57 ` Stefano Garzarella
2021-08-05 8:33 ` Arseny Krasnov
2021-08-05 9:06 ` Stefano Garzarella
2021-08-05 9:21 ` [!!Mass Mail KSE][MASSMAIL KLMS] " Arseny Krasnov
2021-08-06 7:16 ` Stefano Garzarella
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