eth: fbnic: Reset hw stats upon PCI error

[ Upstream commit b1161b1863c5f3d592adba5accd6e5c79741720f ]

Upon experiencing a PCI error, fbnic reset the device to recover from
the failure. Reset the hardware stats as part of the device reset to
ensure accurate stats reporting.

Note that the reset is not really resetting the aggregate value to 0,
which may result in a spike for a system collecting deltas in stats.
Rather, the reset re-latches the current value as previous, in case HW
got reset.

Signed-off-by: Mohsin Bashir <mohsin.bashr@gmail.com>
Reviewed-by: Jacob Keller <jacob.e.keller@intel.com>
Link: https://patch.msgid.link/20250825200206.2357713-3-kuba@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/net/ethernet/meta/fbnic/fbnic_pci.c b/drivers/net/ethernet/meta/fbnic/fbnic_pci.c
index 28e23e3ffca88c243b682c4e28e58f368b09791f..c4d51490140ebcbb6c57fa35706c7aebd5942e9d 100644 (file)
--- a/drivers/net/ethernet/meta/fbnic/fbnic_pci.c
+++ b/drivers/net/ethernet/meta/fbnic/fbnic_pci.c
@@ -489,6 +489,8 @@ static void __fbnic_pm_attach(struct device *dev)
        struct net_device *netdev = fbd->netdev;
        struct fbnic_net *fbn;
 
+       fbnic_reset_hw_stats(fbd);
+
        if (fbnic_init_failure(fbd))
                return;