netdev - [PATCH iproute2 7/9] ip/tunnel: Minor cleanups in print routines

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Date:   Fri, 12 Jan 2018 19:39:32 +0200
From:   Serhey Popovych <serhe.popovych@...il.com>
To:     netdev@...r.kernel.org
Subject: [PATCH iproute2 7/9] ip/tunnel: Minor cleanups in print routines

Print "unknown" parameter for "encap" type in PRINT_FP
context using "%s " format specifier and benefit from
complite time string merge.

Unify encapsulation type check.

Signed-off-by: Serhey Popovych <serhe.popovych@...il.com>
---
 ip/link_gre.c    |    5 +++--
 ip/link_gre6.c   |    8 ++++----
 ip/link_ip6tnl.c |    6 +++---
 ip/link_iptnl.c  |    2 +-
 4 files changed, 11 insertions(+), 10 deletions(-)

diff --git a/ip/link_gre.c b/ip/link_gre.c
index a7d1cd1..b4cde62 100644
--- a/ip/link_gre.c
+++ b/ip/link_gre.c
@@ -450,6 +450,8 @@ static void gre_print_direct_opt(FILE *f, struct rtattr *tb[])
 
 static void gre_print_opt(struct link_util *lu, FILE *f, struct rtattr *tb[])
 {
+	__u16 type;
+
 	if (!tb)
 		return;
 
@@ -469,8 +471,7 @@ static void gre_print_opt(struct link_util *lu, FILE *f, struct rtattr *tb[])
 	}
 
 	if (tb[IFLA_GRE_ENCAP_TYPE] &&
-	    rta_getattr_u16(tb[IFLA_GRE_ENCAP_TYPE]) != TUNNEL_ENCAP_NONE) {
-		__u16 type = rta_getattr_u16(tb[IFLA_GRE_ENCAP_TYPE]);
+	    (type = rta_getattr_u16(tb[IFLA_GRE_ENCAP_TYPE])) != TUNNEL_ENCAP_NONE) {
 		__u16 flags = rta_getattr_u16(tb[IFLA_GRE_ENCAP_FLAGS]);
 		__u16 sport = rta_getattr_u16(tb[IFLA_GRE_ENCAP_SPORT]);
 		__u16 dport = rta_getattr_u16(tb[IFLA_GRE_ENCAP_DPORT]);
diff --git a/ip/link_gre6.c b/ip/link_gre6.c
index 200846e..557151f 100644
--- a/ip/link_gre6.c
+++ b/ip/link_gre6.c
@@ -381,6 +381,7 @@ static void gre_print_opt(struct link_util *lu, FILE *f, struct rtattr *tb[])
 	unsigned int iflags = 0;
 	unsigned int oflags = 0;
 	unsigned int flags = 0;
+	__u16 type;
 	__u32 flowinfo = 0;
 	struct in6_addr in6_addr_any = IN6ADDR_ANY_INIT;
 	__u8 ttl = 0;
@@ -518,15 +519,14 @@ static void gre_print_opt(struct link_util *lu, FILE *f, struct rtattr *tb[])
 	}
 
 	if (tb[IFLA_GRE_ENCAP_TYPE] &&
-	    rta_getattr_u16(tb[IFLA_GRE_ENCAP_TYPE]) != TUNNEL_ENCAP_NONE) {
-		__u16 type = rta_getattr_u16(tb[IFLA_GRE_ENCAP_TYPE]);
+	    (type = rta_getattr_u16(tb[IFLA_GRE_ENCAP_TYPE])) != TUNNEL_ENCAP_NONE) {
 		__u16 flags = rta_getattr_u16(tb[IFLA_GRE_ENCAP_FLAGS]);
 		__u16 sport = rta_getattr_u16(tb[IFLA_GRE_ENCAP_SPORT]);
 		__u16 dport = rta_getattr_u16(tb[IFLA_GRE_ENCAP_DPORT]);
 
 		open_json_object("encap");
-
 		print_string(PRINT_FP, NULL, "encap ", NULL);
+
 		switch (type) {
 		case TUNNEL_ENCAP_FOU:
 			print_string(PRINT_ANY, "type", "%s ", "fou");
@@ -535,7 +535,7 @@ static void gre_print_opt(struct link_util *lu, FILE *f, struct rtattr *tb[])
 			print_string(PRINT_ANY, "type", "%s ", "gue");
 			break;
 		default:
-			print_null(PRINT_ANY, "type", "unknown ", NULL);
+			print_null(PRINT_ANY, "type", "%s ", "unknown");
 			break;
 		}
 
diff --git a/ip/link_ip6tnl.c b/ip/link_ip6tnl.c
index aa6f6fa..51c73dc 100644
--- a/ip/link_ip6tnl.c
+++ b/ip/link_ip6tnl.c
@@ -336,6 +336,7 @@ static void ip6tunnel_print_opt(struct link_util *lu, FILE *f, struct rtattr *tb
 	char s2[64];
 	unsigned int link;
 	int flags = 0;
+	__u16 type;
 	__u32 flowinfo = 0;
 	__u8 ttl = 0;
 
@@ -458,8 +459,7 @@ static void ip6tunnel_print_opt(struct link_util *lu, FILE *f, struct rtattr *tb
 	}
 
 	if (tb[IFLA_IPTUN_ENCAP_TYPE] &&
-	    rta_getattr_u16(tb[IFLA_IPTUN_ENCAP_TYPE]) != TUNNEL_ENCAP_NONE) {
-		__u16 type = rta_getattr_u16(tb[IFLA_IPTUN_ENCAP_TYPE]);
+	    (type = rta_getattr_u16(tb[IFLA_IPTUN_ENCAP_TYPE])) != TUNNEL_ENCAP_NONE) {
 		__u16 flags = rta_getattr_u16(tb[IFLA_IPTUN_ENCAP_FLAGS]);
 		__u16 sport = rta_getattr_u16(tb[IFLA_IPTUN_ENCAP_SPORT]);
 		__u16 dport = rta_getattr_u16(tb[IFLA_IPTUN_ENCAP_DPORT]);
@@ -474,7 +474,7 @@ static void ip6tunnel_print_opt(struct link_util *lu, FILE *f, struct rtattr *tb
 			print_string(PRINT_ANY, "type", "%s ", "gue");
 			break;
 		default:
-			print_null(PRINT_ANY, "type", "unknown ", NULL);
+			print_null(PRINT_ANY, "type", "%s ", "unknown");
 			break;
 		}
 
diff --git a/ip/link_iptnl.c b/ip/link_iptnl.c
index 83a524f..17d28ec 100644
--- a/ip/link_iptnl.c
+++ b/ip/link_iptnl.c
@@ -505,7 +505,7 @@ static void iptunnel_print_opt(struct link_util *lu, FILE *f, struct rtattr *tb[
 			print_string(PRINT_ANY, "type", "%s ", "gue");
 			break;
 		default:
-			print_null(PRINT_ANY, "type", "unknown ", NULL);
+			print_null(PRINT_ANY, "type", "%s ", "unknown");
 			break;
 		}
 
-- 
1.7.10.4