netdev - RE: [net-next 05/15] ice: return correct error code from ice_aq_sw

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Message-ID: <SN6PR11MB2847EA0F57447F0CF6650B52FE700@SN6PR11MB2847.namprd11.prod.outlook.com>
Date:   Wed, 29 Jul 2020 16:26:33 +0000
From:   "Patil, Kiran" <kiran.patil@...el.com>
To:     "Nguyen, Anthony L" <anthony.l.nguyen@...el.com>,
        "davem@...emloft.net" <davem@...emloft.net>
CC:     "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        "nhorman@...hat.com" <nhorman@...hat.com>,
        "sassmann@...hat.com" <sassmann@...hat.com>,
        "Kirsher, Jeffrey T" <jeffrey.t.kirsher@...el.com>,
        "Bowers, AndrewX" <andrewx.bowers@...el.com>
Subject: RE: [net-next 05/15] ice: return correct error code from
 ice_aq_sw_rules

ACK

-----Original Message-----
From: Nguyen, Anthony L <anthony.l.nguyen@...el.com> 
Sent: Wednesday, July 29, 2020 9:24 AM
To: davem@...emloft.net
Cc: Patil, Kiran <kiran.patil@...el.com>; netdev@...r.kernel.org; nhorman@...hat.com; sassmann@...hat.com; Kirsher, Jeffrey T <jeffrey.t.kirsher@...el.com>; Nguyen, Anthony L <anthony.l.nguyen@...el.com>; Bowers, AndrewX <andrewx.bowers@...el.com>
Subject: [net-next 05/15] ice: return correct error code from ice_aq_sw_rules

From: Kiran Patil <kiran.patil@...el.com>

Return ICE_ERR_DOES_NOT_EXIST return code if admin command error code is ICE_AQ_RC_ENOENT (not exist). ice_aq_sw_rules is used when switch rule is getting added/deleted/updated. In case of delete/update switch rule, admin command can return ICE_AQ_RC_ENOENT error code if such rule does not exist, hence return ICE_ERR_DOES_NOT_EXIST error code from ice_aq_sw_rule, so that caller of this function can decide how to handle ICE_ERR_DOES_NOT_EXIST.

Signed-off-by: Kiran Patil <kiran.patil@...el.com>
Tested-by: Andrew Bowers <andrewx.bowers@...el.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@...el.com>
---
 drivers/net/ethernet/intel/ice/ice_switch.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/intel/ice/ice_switch.c b/drivers/net/ethernet/intel/ice/ice_switch.c
index ccbe1cc64295..c3a6c41385ee 100644
--- a/drivers/net/ethernet/intel/ice/ice_switch.c
+++ b/drivers/net/ethernet/intel/ice/ice_switch.c
@@ -495,6 +495,7 @@ ice_aq_sw_rules(struct ice_hw *hw, void *rule_list, u16 rule_list_sz,
 		u8 num_rules, enum ice_adminq_opc opc, struct ice_sq_cd *cd)  {
 	struct ice_aq_desc desc;
+	enum ice_status status;
 
 	if (opc != ice_aqc_opc_add_sw_rules &&
 	    opc != ice_aqc_opc_update_sw_rules && @@ -506,7 +507,12 @@ ice_aq_sw_rules(struct ice_hw *hw, void *rule_list, u16 rule_list_sz,
 	desc.flags |= cpu_to_le16(ICE_AQ_FLAG_RD);
 	desc.params.sw_rules.num_rules_fltr_entry_index =
 		cpu_to_le16(num_rules);
-	return ice_aq_send_cmd(hw, &desc, rule_list, rule_list_sz, cd);
+	status = ice_aq_send_cmd(hw, &desc, rule_list, rule_list_sz, cd);
+	if (opc != ice_aqc_opc_add_sw_rules &&
+	    hw->adminq.sq_last_status == ICE_AQ_RC_ENOENT)
+		status = ICE_ERR_DOES_NOT_EXIST;
+
+	return status;
 }
 
 /* ice_init_port_info - Initialize port_info with switch configuration data
--
2.26.2