netdev - [PATCH iwl-next] ice: improve error message for insufficient filter space

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Message-ID: <20250314081110.34694-2-martyna.szapar-mudlaw@linux.intel.com>
Date: Fri, 14 Mar 2025 09:11:11 +0100
From: Martyna Szapar-Mudlaw <martyna.szapar-mudlaw@...ux.intel.com>
To: intel-wired-lan@...ts.osuosl.org
Cc: netdev@...r.kernel.org,
	Martyna Szapar-Mudlaw <martyna.szapar-mudlaw@...ux.intel.com>,
	Michal Swiatkowski <michal.swiatkowski@...ux.intel.com>
Subject: [PATCH iwl-next] ice: improve error message for insufficient filter space

When adding a rule to switch through tc, if the operation fails
due to not enough free recipes (-ENOSPC), provide a clearer
error message: "Unable to add filter: insufficient space available."

This improves user feedback by distinguishing space limitations from
other generic failures.

Reviewed-by: Michal Swiatkowski <michal.swiatkowski@...ux.intel.com>
Signed-off-by: Martyna Szapar-Mudlaw <martyna.szapar-mudlaw@...ux.intel.com>
---
 drivers/net/ethernet/intel/ice/ice_tc_lib.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/drivers/net/ethernet/intel/ice/ice_tc_lib.c b/drivers/net/ethernet/intel/ice/ice_tc_lib.c
index ea39b999a0d0..5acfa72fe7d8 100644
--- a/drivers/net/ethernet/intel/ice/ice_tc_lib.c
+++ b/drivers/net/ethernet/intel/ice/ice_tc_lib.c
@@ -846,6 +846,9 @@ ice_eswitch_add_tc_fltr(struct ice_vsi *vsi, struct ice_tc_flower_fltr *fltr)
 		NL_SET_ERR_MSG_MOD(fltr->extack, "Unable to add filter because it already exist");
 		ret = -EINVAL;
 		goto exit;
+	} else if (ret == -ENOSPC) {
+		NL_SET_ERR_MSG_MOD(fltr->extack, "Unable to add filter: insufficient space available.");
+		goto exit;
 	} else if (ret) {
 		NL_SET_ERR_MSG_MOD(fltr->extack, "Unable to add filter due to error");
 		goto exit;
@@ -1071,6 +1074,10 @@ ice_add_tc_flower_adv_fltr(struct ice_vsi *vsi,
 				   "Unable to add filter because it already exist");
 		ret = -EINVAL;
 		goto exit;
+	} else if (ret == -ENOSPC) {
+		NL_SET_ERR_MSG_MOD(tc_fltr->extack,
+				   "Unable to add filter: insufficient space available.");
+		goto exit;
 	} else if (ret) {
 		NL_SET_ERR_MSG_MOD(tc_fltr->extack,
 				   "Unable to add filter due to error");
-- 
2.47.0