netdev - [PATCH iproute2-next] f_flower: simplify cfm dump function

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Message-ID: <20230629195736.675018-1-zahari.doychev@linux.com>
Date: Thu, 29 Jun 2023 21:57:36 +0200
From: Zahari Doychev <zahari.doychev@...ux.com>
To: netdev@...r.kernel.org
Cc: dsahern@...il.com,
	stephen@...workplumber.org,
	hmehrtens@...linear.com,
	aleksander.lobakin@...el.com,
	simon.horman@...igine.com,
	idosch@...sch.org,
	Zahari Doychev <zdoychev@...linear.com>
Subject: [PATCH iproute2-next] f_flower: simplify cfm dump function

From: Zahari Doychev <zdoychev@...linear.com>

The standard print function can be used to print the cfm attributes in
both standard and json use cases. In this way no string buffer is needed
which simplifies the code.

Signed-off-by: Zahari Doychev <zdoychev@...linear.com>
---
 tc/f_flower.c | 20 ++++++--------------
 1 file changed, 6 insertions(+), 14 deletions(-)

diff --git a/tc/f_flower.c b/tc/f_flower.c
index 6da5028a..c71394f7 100644
--- a/tc/f_flower.c
+++ b/tc/f_flower.c
@@ -2816,9 +2816,6 @@ static void flower_print_arp_op(const char *name,
 static void flower_print_cfm(struct rtattr *attr)
 {
 	struct rtattr *tb[TCA_FLOWER_KEY_CFM_OPT_MAX + 1];
-	struct rtattr *v;
-	SPRINT_BUF(out);
-	size_t sz = 0;
 
 	if (!attr || !(attr->rta_type & NLA_F_NESTED))
 		return;
@@ -2830,20 +2827,15 @@ static void flower_print_cfm(struct rtattr *attr)
 	print_string(PRINT_FP, NULL, "  cfm", NULL);
 	open_json_object("cfm");
 
-	v = tb[TCA_FLOWER_KEY_CFM_MD_LEVEL];
-	if (v) {
-		sz += sprintf(out, " mdl %u", rta_getattr_u8(v));
-		print_hhu(PRINT_JSON, "mdl", NULL, rta_getattr_u8(v));
-	}
+	if (tb[TCA_FLOWER_KEY_CFM_MD_LEVEL])
+		print_hhu(PRINT_ANY, "mdl", " mdl %u",
+			  rta_getattr_u8(tb[TCA_FLOWER_KEY_CFM_MD_LEVEL]));
 
-	v = tb[TCA_FLOWER_KEY_CFM_OPCODE];
-	if (v) {
-		sprintf(out + sz, " op %u", rta_getattr_u8(v));
-		print_hhu(PRINT_JSON, "op", NULL, rta_getattr_u8(v));
-	}
+	if (tb[TCA_FLOWER_KEY_CFM_OPCODE])
+		print_hhu(PRINT_ANY, "op", " op %u",
+			  rta_getattr_u8(tb[TCA_FLOWER_KEY_CFM_OPCODE]));
 
 	close_json_object();
-	print_string(PRINT_FP, "cfm", "%s", out);
 }
 
 static int flower_print_opt(struct filter_util *qu, FILE *f,
-- 
2.41.0