diff options
| author | Gaurav Kohli <gauravkohli@linux.microsoft.com> | 2022-10-06 08:52:59 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2022-10-07 10:43:58 +0300 |
| commit | 365e1ececb2905f94cc10a5817c5b644a32a3ae2 (patch) | |
| tree | 7b397b41e30b0e5d4a9c6323acbb192552caf08c /drivers/net/hyperv/netvsc.c | |
| parent | 30393181fdbc1608cc683b4ee99dcce05ffcc8c7 (diff) | |
| download | linux-365e1ececb2905f94cc10a5817c5b644a32a3ae2.tar.xz | |
hv_netvsc: Fix race between VF offering and VF association message from host
During vm boot, there might be possibility that vf registration
call comes before the vf association from host to vm.
And this might break netvsc vf path, To prevent the same block
vf registration until vf bind message comes from host.
Cc: stable@vger.kernel.org
Fixes: 00d7ddba11436 ("hv_netvsc: pair VF based on serial number")
Reviewed-by: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: Gaurav Kohli <gauravkohli@linux.microsoft.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/hyperv/netvsc.c')
| -rw-r--r-- | drivers/net/hyperv/netvsc.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/net/hyperv/netvsc.c b/drivers/net/hyperv/netvsc.c index f066de0da492..9352dad58996 100644 --- a/drivers/net/hyperv/netvsc.c +++ b/drivers/net/hyperv/netvsc.c @@ -1580,6 +1580,10 @@ static void netvsc_send_vf(struct net_device *ndev, net_device_ctx->vf_alloc = nvmsg->msg.v4_msg.vf_assoc.allocated; net_device_ctx->vf_serial = nvmsg->msg.v4_msg.vf_assoc.serial; + + if (net_device_ctx->vf_alloc) + complete(&net_device_ctx->vf_add); + netdev_info(ndev, "VF slot %u %s\n", net_device_ctx->vf_serial, net_device_ctx->vf_alloc ? "added" : "removed"); |