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Message-Id: <20221123044949.4785-1-stephen@networkplumber.org>
Date:   Tue, 22 Nov 2022 20:49:49 -0800
From:   Stephen Hemminger <stephen@...workplumber.org>
To:     netdev@...r.kernel.org
Cc:     Stephen Hemminger <stephen@...workplumber.org>
Subject: [PATCH iproute2] tc: add json support to size table

Fix the JSON output if size addaption table is used.

Example:
[ {
        "kind": "fq_codel",
        "handle": "1:",
        "dev": "enp2s0",
        "root": true,
        "refcnt": 2,
        "options": {
            "limit": 10240,
            "flows": 1024,
            "quantum": 1514,
            "target": 4999,
            "interval": 99999,
            "memory_limit": 33554432,
            "ecn": true,
            "drop_batch": 64
        },
        "stab": {
            "overhead": 30,
            "mpu": 68,
            "mtu": 2047,
            "tsize": 512
        }
    } ]

Remove fixed prefix arg and no longer needed fp arg.

Signed-off-by: Stephen Hemminger <stephen@...workplumber.org>
---
 tc/tc_common.h |  2 +-
 tc/tc_qdisc.c  |  2 +-
 tc/tc_stab.c   | 22 ++++++++++++++--------
 3 files changed, 16 insertions(+), 10 deletions(-)

diff --git a/tc/tc_common.h b/tc/tc_common.h
index 58dc9d6a6c4f..f1561d80a43b 100644
--- a/tc/tc_common.h
+++ b/tc/tc_common.h
@@ -16,7 +16,7 @@ int print_action(struct nlmsghdr *n, void *arg);
 int print_filter(struct nlmsghdr *n, void *arg);
 int print_qdisc(struct nlmsghdr *n, void *arg);
 int print_class(struct nlmsghdr *n, void *arg);
-void print_size_table(FILE *fp, const char *prefix, struct rtattr *rta);
+void print_size_table(struct rtattr *rta);
 
 struct tc_estimator;
 int parse_estimator(int *p_argc, char ***p_argv, struct tc_estimator *est);
diff --git a/tc/tc_qdisc.c b/tc/tc_qdisc.c
index b79029d96202..33a6665eaac0 100644
--- a/tc/tc_qdisc.c
+++ b/tc/tc_qdisc.c
@@ -329,7 +329,7 @@ int print_qdisc(struct nlmsghdr *n, void *arg)
 	print_nl();
 
 	if (show_details && tb[TCA_STAB]) {
-		print_size_table(fp, " ", tb[TCA_STAB]);
+		print_size_table(tb[TCA_STAB]);
 		print_nl();
 	}
 
diff --git a/tc/tc_stab.c b/tc/tc_stab.c
index c61ecfd200ca..06dc1b134d85 100644
--- a/tc/tc_stab.c
+++ b/tc/tc_stab.c
@@ -103,7 +103,7 @@ int parse_size_table(int *argcp, char ***argvp, struct tc_sizespec *sp)
 	return 0;
 }
 
-void print_size_table(FILE *fp, const char *prefix, struct rtattr *rta)
+void print_size_table(struct rtattr *rta)
 {
 	struct rtattr *tb[TCA_STAB_MAX + 1];
 
@@ -117,17 +117,23 @@ void print_size_table(FILE *fp, const char *prefix, struct rtattr *rta)
 		memcpy(&s, RTA_DATA(tb[TCA_STAB_BASE]),
 				MIN(RTA_PAYLOAD(tb[TCA_STAB_BASE]), sizeof(s)));
 
-		fprintf(fp, "%s", prefix);
+		print_string(PRINT_FP, NULL, " ", NULL);
+
 		if (s.linklayer)
-			fprintf(fp, "linklayer %s ",
-					sprint_linklayer(s.linklayer, b1));
+			print_string(PRINT_ANY, "linklayer",
+				     "linklayer %s ",
+				     sprint_linklayer(s.linklayer, b1));
 		if (s.overhead)
-			fprintf(fp, "overhead %d ", s.overhead);
+			print_int(PRINT_ANY, "overhead",
+				  "overhead %d ", s.overhead);
 		if (s.mpu)
-			fprintf(fp, "mpu %u ", s.mpu);
+			print_uint(PRINT_ANY, "mpu",
+				   "mpu %u ", s.mpu);
 		if (s.mtu)
-			fprintf(fp, "mtu %u ", s.mtu);
+			print_uint(PRINT_ANY, "mtu",
+				   "mtu %u ", s.mtu);
 		if (s.tsize)
-			fprintf(fp, "tsize %u ", s.tsize);
+			print_uint(PRINT_ANY, "tsize",
+				   "tsize %u ", s.tsize);
 	}
 }
-- 
2.35.1

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