From ede6a3eaf53aed3671a4236d3006de0693ab6246 Mon Sep 17 00:00:00 2001 From: Nicolas Dichtel Date: Tue, 5 Feb 2013 00:38:34 -0800 Subject: [PATCH] iplink: display the value of IFLA_PROMISCUITY This is useful to know the 'real' status of an interface (the flag IFF_PROMISC is exported by the kernel only when the user set it explicitly, for example it will not be exported when a tcpdump is running). This information will be displayed when '-details' is provided by the user. Example: $ ip -d l l tun10 6: tun10: mtu 1480 qdisc noqueue state UNKNOWN mode DEFAULT link/sit 10.16.0.249 peer 10.16.0.121 sit remote 10.16.0.121 local 10.16.0.249 ttl inherit pmtudisc 6rd-prefix 2002::/16 promiscuity 2 Signed-off-by: Nicolas Dichtel --- ip/ipaddress.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/ip/ipaddress.c b/ip/ipaddress.c index 2eb1a0a6..e8cab409 100644 --- a/ip/ipaddress.c +++ b/ip/ipaddress.c @@ -464,6 +464,10 @@ int print_linkinfo(const struct sockaddr_nl *who, if (do_link && tb[IFLA_LINKINFO] && show_details) print_linktype(fp, tb[IFLA_LINKINFO]); + if (do_link && tb[IFLA_PROMISCUITY] && show_details) + fprintf(fp, "\n promiscuity %u ", + *(int*)RTA_DATA(tb[IFLA_PROMISCUITY])); + if (do_link && tb[IFLA_IFALIAS]) fprintf(fp,"\n alias %s", rta_getattr_str(tb[IFLA_IFALIAS]));