[PATCH net-next 1/2] net: libwx: Fix statistics of multicast packets

[PATCH net-next 1/2] net: libwx: Fix statistics of multicast packets

[Jiawen Wu]

When SR-IOV is enabled, the number of multicast packets is mistakenly
counted starting from queue 0. It would be a wrong count that includes
the packets received on VF. Fix it to count from the correct offset.

Fixes: c52d4b898901 ("net: libwx: Redesign flow when sriov is enabled")
Signed-off-by: Jiawen Wu <jiawenwu@trustnetic.com>
---
 drivers/net/ethernet/wangxun/libwx/wx_hw.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/wangxun/libwx/wx_hw.c b/drivers/net/ethernet/wangxun/libwx/wx_hw.c
index 143cc1088eea..17ff3c21539a 100644
--- a/drivers/net/ethernet/wangxun/libwx/wx_hw.c
+++ b/drivers/net/ethernet/wangxun/libwx/wx_hw.c
@@ -2792,7 +2792,8 @@ void wx_update_stats(struct wx *wx)
 		hwstats->fdirmiss += rd32(wx, WX_RDB_FDIR_MISS);
 	}
 
-	for (i = 0; i < wx->mac.max_rx_queues; i++)
+	for (i = wx->num_vfs * wx->num_rx_queues_per_pool;
+	     i < wx->mac.max_rx_queues; i++)
 		hwstats->qmprc += rd32(wx, WX_PX_MPRC(i));
 }
 EXPORT_SYMBOL(wx_update_stats);
-- 
2.48.1

Re: [PATCH net-next 1/2] net: libwx: Fix statistics of multicast packets

[Simon Horman]

On Tue, May 20, 2025 at 02:38:59PM +0800, Jiawen Wu wrote:
> When SR-IOV is enabled, the number of multicast packets is mistakenly
> counted starting from queue 0. It would be a wrong count that includes
> the packets received on VF. Fix it to count from the correct offset.
> 
> Fixes: c52d4b898901 ("net: libwx: Redesign flow when sriov is enabled")
> Signed-off-by: Jiawen Wu <jiawenwu@trustnetic.com>

I note that this is a fix for a commit present in net-next
but not net. So the net-next target + Fixes tag looks good to me.

Reviewed-by: Simon Horman <horms@kernel.org>