diff mbox series

[v3,net,1/3] net: enetc: remove xdp_drops statistic from enetc_xdp_drop()

Message ID 20241009090327.146461-2-wei.fang@nxp.com (mailing list archive)
State Superseded
Headers show
Series net: enetc: fix some issues of XDP | expand

Commit Message

Wei Fang Oct. 9, 2024, 9:03 a.m. UTC
The xdp_drops statistic indicates the number of XDP frames dropped in
the Rx direction. However, enetc_xdp_drop() is also used in XDP_TX and
XDP_REDIRECT actions. If frame loss occurs in these two actions, the
frames loss count should not be included in xdp_drops, because there
are already xdp_tx_drops and xdp_redirect_failures to count the frame
loss of these two actions, so it's better to remove xdp_drops statistic
from enetc_xdp_drop() and increase xdp_drops in XDP_DROP action.

Fixes: 7ed2bc80074e ("net: enetc: add support for XDP_TX")
Cc: stable@vger.kernel.org
Signed-off-by: Wei Fang <wei.fang@nxp.com>
Reviewed-by: Maciej Fijalkowski <maciej.fijalkowski@intel.com>
---
v2: no changes
v3: no changes
---
 drivers/net/ethernet/freescale/enetc/enetc.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Comments

Vladimir Oltean Oct. 9, 2024, 11:23 a.m. UTC | #1
On Wed, Oct 09, 2024 at 05:03:25PM +0800, Wei Fang wrote:
> The xdp_drops statistic indicates the number of XDP frames dropped in
> the Rx direction. However, enetc_xdp_drop() is also used in XDP_TX and
> XDP_REDIRECT actions. If frame loss occurs in these two actions, the
> frames loss count should not be included in xdp_drops, because there
> are already xdp_tx_drops and xdp_redirect_failures to count the frame
> loss of these two actions, so it's better to remove xdp_drops statistic
> from enetc_xdp_drop() and increase xdp_drops in XDP_DROP action.
> 
> Fixes: 7ed2bc80074e ("net: enetc: add support for XDP_TX")
> Cc: stable@vger.kernel.org
> Signed-off-by: Wei Fang <wei.fang@nxp.com>
> Reviewed-by: Maciej Fijalkowski <maciej.fijalkowski@intel.com>
> ---

Reviewed-by: Vladimir Oltean <vladimir.oltean@nxp.com>
diff mbox series

Patch

diff --git a/drivers/net/ethernet/freescale/enetc/enetc.c b/drivers/net/ethernet/freescale/enetc/enetc.c
index 032d8eadd003..56e59721ec7d 100644
--- a/drivers/net/ethernet/freescale/enetc/enetc.c
+++ b/drivers/net/ethernet/freescale/enetc/enetc.c
@@ -1521,7 +1521,6 @@  static void enetc_xdp_drop(struct enetc_bdr *rx_ring, int rx_ring_first,
 				  &rx_ring->rx_swbd[rx_ring_first]);
 		enetc_bdr_idx_inc(rx_ring, &rx_ring_first);
 	}
-	rx_ring->stats.xdp_drops++;
 }
 
 static int enetc_clean_rx_ring_xdp(struct enetc_bdr *rx_ring,
@@ -1586,6 +1585,7 @@  static int enetc_clean_rx_ring_xdp(struct enetc_bdr *rx_ring,
 			fallthrough;
 		case XDP_DROP:
 			enetc_xdp_drop(rx_ring, orig_i, i);
+			rx_ring->stats.xdp_drops++;
 			break;
 		case XDP_PASS:
 			rxbd = orig_rxbd;