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vdpa: Restore vlan filtering state

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This patch introduces vhost_vdpa_net_load_single_vlan()
and vhost_vdpa_net_load_vlan() to restore the vlan
filtering state at device's startup.

Co-developed-by: Eugenio Pérez <eperezma@redhat.com>
Signed-off-by: Eugenio Pérez <eperezma@redhat.com>
Signed-off-by: Hawkins Jiawei <yin31149@gmail.com>
Message-Id: <e76a29f77bb3f386e4a643c8af94b77b775d1752.1690106284.git.yin31149@gmail.com>
Tested-by: Lei Yang <leiyang@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Hawkins Jiawei 2023-07-23 20:09:13 +08:00 committed by Michael S. Tsirkin
parent e19751a32f
commit 8f7e996748
1 changed files with 48 additions and 0 deletions
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48
net/vhost-vdpa.c
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@ -968,6 +968,50 @@ static int vhost_vdpa_net_load_rx(VhostVDPAState *s,
return 0;
}
static int vhost_vdpa_net_load_single_vlan(VhostVDPAState *s,
const VirtIONet *n,
uint16_t vid)
{
const struct iovec data = {
.iov_base = &vid,
.iov_len = sizeof(vid),
};
ssize_t dev_written = vhost_vdpa_net_load_cmd(s, VIRTIO_NET_CTRL_VLAN,
VIRTIO_NET_CTRL_VLAN_ADD,
&data, 1);
if (unlikely(dev_written < 0)) {
return dev_written;
}
if (unlikely(*s->status != VIRTIO_NET_OK)) {
return -EIO;
}
return 0;
}
static int vhost_vdpa_net_load_vlan(VhostVDPAState *s,
const VirtIONet *n)
{
int r;
if (!virtio_vdev_has_feature(&n->parent_obj, VIRTIO_NET_F_CTRL_VLAN)) {
return 0;
}
for (int i = 0; i < MAX_VLAN >> 5; i++) {
for (int j = 0; n->vlans[i] && j <= 0x1f; j++) {
if (n->vlans[i] & (1U << j)) {
r = vhost_vdpa_net_load_single_vlan(s, n, (i << 5) + j);
if (unlikely(r != 0)) {
return r;
}
}
}
}
return 0;
}
static int vhost_vdpa_net_load(NetClientState *nc)
{
VhostVDPAState *s = DO_UPCAST(VhostVDPAState, nc, nc);
@ -998,6 +1042,10 @@ static int vhost_vdpa_net_load(NetClientState *nc)
if (unlikely(r)) {
return r;
}
r = vhost_vdpa_net_load_vlan(s, n);
if (unlikely(r)) {
return r;
}
return 0;
}