Use @s2 buffer to store string representation of flowlabel and get rid of extra SPRINT_BUF(): no need to preserve @s2 contents for later.
Use print_string(PRINT_ANY, ...) with prepared by snprintf() string for both PRINT_JSON and PRINT_FP cases. Omit flowlabel from output if no flowinfo attribute is given and IP6_TNL_F_USE_ORIG_FLOWLABEL isn't set. Signed-off-by: Serhey Popovych <serhe.popov...@gmail.com> --- ip/link_gre6.c | 15 ++++----------- ip/link_ip6tnl.c | 14 ++++---------- 2 files changed, 8 insertions(+), 21 deletions(-) diff --git a/ip/link_gre6.c b/ip/link_gre6.c index a02dd4a..1205946 100644 --- a/ip/link_gre6.c +++ b/ip/link_gre6.c @@ -452,18 +452,11 @@ static void gre_print_opt(struct link_util *lu, FILE *f, struct rtattr *tb[]) "ip6_tnl_f_use_orig_flowlabel", "flowlabel inherit ", true); - } else { - if (is_json_context()) { - SPRINT_BUF(b1); - - snprintf(b1, sizeof(b1), "0x%05x", - ntohl(flowinfo & IP6_FLOWINFO_FLOWLABEL)); - print_string(PRINT_JSON, "flowlabel", NULL, b1); + } else if (tb[IFLA_GRE_FLOWINFO]) { + __u32 val = ntohl(flowinfo & IP6_FLOWINFO_FLOWLABEL); - } else { - fprintf(f, "flowlabel 0x%05x ", - ntohl(flowinfo & IP6_FLOWINFO_FLOWLABEL)); - } + snprintf(s2, sizeof(s2), "0x%05x", val); + print_string(PRINT_ANY, "flowlabel", "flowlabel %s ", s2); } if (flags & IP6_TNL_F_USE_ORIG_TCLASS) { diff --git a/ip/link_ip6tnl.c b/ip/link_ip6tnl.c index 05322fd..7000056 100644 --- a/ip/link_ip6tnl.c +++ b/ip/link_ip6tnl.c @@ -421,17 +421,11 @@ static void ip6tunnel_print_opt(struct link_util *lu, FILE *f, struct rtattr *tb "ip6_tnl_f_use_orig_flowlabel", "flowlabel inherit ", true); - } else { - if (is_json_context()) { - SPRINT_BUF(b1); + } else if (tb[IFLA_IPTUN_FLOWINFO]) { + __u32 val = ntohl(flowinfo & IP6_FLOWINFO_FLOWLABEL); - snprintf(b1, sizeof(b1), "0x%05x", - ntohl(flowinfo & IP6_FLOWINFO_FLOWLABEL)); - print_string(PRINT_JSON, "flowlabel", NULL, b1); - } else { - printf("flowlabel 0x%05x ", - ntohl(flowinfo & IP6_FLOWINFO_FLOWLABEL)); - } + snprintf(s2, sizeof(s2), "0x%05x", val); + print_string(PRINT_ANY, "flowlabel", "flowlabel %s ", s2); } if (flags & IP6_TNL_F_RCV_DSCP_COPY) -- 1.7.10.4