From: Wojciech Drewek <wojciech.drewek@intel.com>
Date: Wed, 20 Apr 2022 12:55:41 +0200
Subject: ice: return ENOSPC when exceeding ICE_MAX_CHAIN_WORDS
Patch-mainline: v5.19-rc1
Git-commit: bd1ffe8e5df4e24fc637d85b01f40e282c29856d
References: jsc#PED-376

When number of words exceeds ICE_MAX_CHAIN_WORDS, -ENOSPC
should be returned not -EINVAL. Do not overwrite this
error code in ice_add_tc_flower_adv_fltr.

Signed-off-by: Wojciech Drewek <wojciech.drewek@intel.com>
Suggested-by: Marcin Szycik <marcin.szycik@linux.intel.com>
Acked-by: Maciej Fijalkowski <maciej.fijalkowski@intel.com>
Tested-by: Sandeep Penigalapati <sandeep.penigalapati@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
 drivers/net/ethernet/intel/ice/ice_switch.c |    5 ++++-
 drivers/net/ethernet/intel/ice/ice_tc_lib.c |    1 -
 2 files changed, 4 insertions(+), 2 deletions(-)

--- a/drivers/net/ethernet/intel/ice/ice_switch.c
+++ b/drivers/net/ethernet/intel/ice/ice_switch.c
@@ -5992,9 +5992,12 @@ ice_add_adv_rule(struct ice_hw *hw, stru
 				word_cnt++;
 	}
 
-	if (!word_cnt || word_cnt > ICE_MAX_CHAIN_WORDS)
+	if (!word_cnt)
 		return -EINVAL;
 
+	if (word_cnt > ICE_MAX_CHAIN_WORDS)
+		return -ENOSPC;
+
 	/* locate a dummy packet */
 	profile = ice_find_dummy_packet(lkups, lkups_cnt, rinfo->tun_type);
 
--- a/drivers/net/ethernet/intel/ice/ice_tc_lib.c
+++ b/drivers/net/ethernet/intel/ice/ice_tc_lib.c
@@ -622,7 +622,6 @@ ice_add_tc_flower_adv_fltr(struct ice_vs
 	} else if (ret) {
 		NL_SET_ERR_MSG_MOD(tc_fltr->extack,
 				   "Unable to add filter due to error");
-		ret = -EIO;
 		goto exit;
 	}