ip: show min and max mtu

Add min/max MTU to the link details

Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>

diff --git a/include/uapi/linux/if_link.h b/include/uapi/linux/if_link.h
index 26e8cf8b45aa7cb90cebf12c86a3cee1497a1597..8456ff2540153b1c27c44207ae5736d6b575527d 100644 (file)
--- a/include/uapi/linux/if_link.h
+++ b/include/uapi/linux/if_link.h
@@ -164,6 +164,8 @@ enum {
        IFLA_CARRIER_UP_COUNT,
        IFLA_CARRIER_DOWN_COUNT,
        IFLA_NEW_IFINDEX,
+       IFLA_MIN_MTU,
+       IFLA_MAX_MTU,
        __IFLA_MAX
 };
 

diff --git a/ip/ipaddress.c b/ip/ipaddress.c
index bcee9ab731ce338d8208e017c70ed327a5339996..85958e1a9cef843708326b68bf79b9ccfbbf7b5e 100644 (file)
--- a/ip/ipaddress.c
+++ b/ip/ipaddress.c
@@ -1012,6 +1012,16 @@ int print_linkinfo(const struct sockaddr_nl *who,
                                   " promiscuity %u ",
                                   rta_getattr_u32(tb[IFLA_PROMISCUITY]));
 
+               if (tb[IFLA_MIN_MTU])
+                       print_uint(PRINT_ANY,
+                                  "min_mtu", "minmtu %u ",
+                                  rta_getattr_u32(tb[IFLA_MIN_MTU]));
+
+               if (tb[IFLA_MAX_MTU])
+                       print_uint(PRINT_ANY,
+                                  "max_mtu", "maxmtu %u ",
+                                  rta_getattr_u32(tb[IFLA_MAX_MTU]));
+
                if (tb[IFLA_LINKINFO])
                        print_linktype(fp, tb[IFLA_LINKINFO]);