[dpdk-dev] [PATCH v2 08/12] net/ice/base: fix unexpected switch rule overwrite

Qi Zhang qi.z.zhang at intel.com
Sun Oct 6 05:14:04 CEST 2019


A switch rule with "drop" action will be overwritten by a
rule with same pattern match but with a "to queue" action.
While in an inversed flow creation sequence, the "to queue"
can't be overwritten by the "drop" rule.

The inconsistent behavior is not expected, the patch
fix the issue by preventing rule overwrite in both cases.

Fixes: fed0c5ca5f19 ("net/ice/base: support programming a new switch recipe")

Signed-off-by: Qi Zhang <qi.z.zhang at intel.com>
Signed-off-by: Paul M Stillwell Jr <paul.m.stillwell.jr at intel.com>
Acked-by: Qiming Yang <qiming.yang at intel.com>
---
 drivers/net/ice/base/ice_switch.c | 7 ++-----
 1 file changed, 2 insertions(+), 5 deletions(-)

diff --git a/drivers/net/ice/base/ice_switch.c b/drivers/net/ice/base/ice_switch.c
index 334f1b5e0..2c02021b1 100644
--- a/drivers/net/ice/base/ice_switch.c
+++ b/drivers/net/ice/base/ice_switch.c
@@ -5977,13 +5977,10 @@ ice_adv_add_update_vsi_list(struct ice_hw *hw,
 	u16 vsi_list_id = 0;
 
 	if (cur_fltr->sw_act.fltr_act == ICE_FWD_TO_Q ||
-	    cur_fltr->sw_act.fltr_act == ICE_FWD_TO_QGRP)
+	    cur_fltr->sw_act.fltr_act == ICE_FWD_TO_QGRP ||
+	    cur_fltr->sw_act.fltr_act == ICE_DROP_PACKET)
 		return ICE_ERR_NOT_IMPL;
 
-	if (cur_fltr->sw_act.fltr_act == ICE_DROP_PACKET &&
-	    new_fltr->sw_act.fltr_act == ICE_DROP_PACKET)
-		return ICE_ERR_ALREADY_EXISTS;
-
 	if ((new_fltr->sw_act.fltr_act == ICE_FWD_TO_Q ||
 	     new_fltr->sw_act.fltr_act == ICE_FWD_TO_QGRP) &&
 	    (cur_fltr->sw_act.fltr_act == ICE_FWD_TO_VSI ||
-- 
2.13.6



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