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Message-Id: <20230224181130.187328-4-pctammela@mojatatu.com>
Date:   Fri, 24 Feb 2023 15:11:30 -0300
From:   Pedro Tammela <pctammela@...atatu.com>
To:     netdev@...r.kernel.org
Cc:     Pedro Tammela <pctammela@...atatu.com>,
        Jamal Hadi Salim <jhs@...atatu.com>
Subject: [PATCH iproute2 3/3] tc: m_nat: parse index argument correctly

'action nat index 1' is a valid cli according to TC's
architecture. Fix the grammar parsing to accept it.

tdc tests:
1..28
ok 1 7565 - Add nat action on ingress with default control action
ok 2 fd79 - Add nat action on ingress with pipe control action
ok 3 eab9 - Add nat action on ingress with continue control action
ok 4 c53a - Add nat action on ingress with reclassify control action
ok 5 76c9 - Add nat action on ingress with jump control action
ok 6 24c6 - Add nat action on ingress with drop control action
ok 7 2120 - Add nat action on ingress with maximum index value
ok 8 3e9d - Add nat action on ingress with invalid index value
ok 9 f6c9 - Add nat action on ingress with invalid IP address
ok 10 be25 - Add nat action on ingress with invalid argument
ok 11 a7bd - Add nat action on ingress with DEFAULT IP address
ok 12 ee1e - Add nat action on ingress with ANY IP address
ok 13 1de8 - Add nat action on ingress with ALL IP address
ok 14 8dba - Add nat action on egress with default control action
ok 15 19a7 - Add nat action on egress with pipe control action
ok 16 f1d9 - Add nat action on egress with continue control action
ok 17 6d4a - Add nat action on egress with reclassify control action
ok 18 b313 - Add nat action on egress with jump control action
ok 19 d9fc - Add nat action on egress with drop control action
ok 20 a895 - Add nat action on egress with DEFAULT IP address
ok 21 2572 - Add nat action on egress with ANY IP address
ok 22 37f3 - Add nat action on egress with ALL IP address
ok 23 6054 - Add nat action on egress with cookie
ok 24 79d6 - Add nat action on ingress with cookie
ok 25 4b12 - Replace nat action with invalid goto chain control
ok 26 b811 - Delete nat action with valid index
ok 27 a521 - Delete nat action with invalid index
ok 28 2c81 - Reference nat action object in filter

Fixes: fc2d0206 ("Add NAT action")
Reviewed-by: Jamal Hadi Salim <jhs@...atatu.com>
Signed-off-by: Pedro Tammela <pctammela@...atatu.com>
---
 tc/m_nat.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/tc/m_nat.c b/tc/m_nat.c
index 58315125..722575c7 100644
--- a/tc/m_nat.c
+++ b/tc/m_nat.c
@@ -88,7 +88,9 @@ parse_nat(struct action_util *a, int *argc_p, char ***argv_p, int tca_id, struct
 	while (argc > 0) {
 		if (matches(*argv, "nat") == 0) {
 			NEXT_ARG();
-			if (parse_nat_args(&argc, &argv, &sel)) {
+			if (matches(*argv, "index") == 0) {
+				goto skip_args;
+			} else if (parse_nat_args(&argc, &argv, &sel)) {
 				fprintf(stderr, "Illegal nat construct (%s)\n",
 					*argv);
 				explain();
@@ -113,6 +115,7 @@ parse_nat(struct action_util *a, int *argc_p, char ***argv_p, int tca_id, struct
 
 	if (argc) {
 		if (matches(*argv, "index") == 0) {
+skip_args:
 			NEXT_ARG();
 			if (get_u32(&sel.index, *argv, 10)) {
 				fprintf(stderr, "Nat: Illegal \"index\"\n");
-- 
2.34.1

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