iplink: add support for protodown reason

[mirror_iproute2.git] / ip / iplink.c

diff --git a/ip/iplink.c b/ip/iplink.c
index 5ec33a98b96e95f00ebd88dd511f0fd482fd5db7..d6b766de1fcf22c9ee11559bb44ee8496494b2af 100644 (file)
--- a/ip/iplink.c
+++ b/ip/iplink.c
@@ -105,6 +105,7 @@ void iplink_usage(void)
                "               [ nomaster ]\n"
                "               [ addrgenmode { eui64 | none | stable_secret | random } ]\n"
                "               [ protodown { on | off } ]\n"
+               "               [ protodown_reason PREASON { on | off } ]\n"
                "               [ gso_max_size BYTES ] | [ gso_max_segs PACKETS ]\n"
                "\n"
                "       ip link show [ DEVICE | group GROUP ] [up] [master DEV] [vrf NAME] [type TYPE]\n"
@@ -903,6 +904,28 @@ int iplink_parse(int argc, char **argv, struct iplink_req *req, char **type)
                                return on_off("protodown", *argv);
                        addattr8(&req->n, sizeof(*req), IFLA_PROTO_DOWN,
                                 proto_down);
+               } else if (strcmp(*argv, "protodown_reason") == 0) {
+                       struct rtattr *pr;
+                       __u32 preason = 0, prvalue = 0, prmask = 0;
+
+                       NEXT_ARG();
+                       if (protodown_reason_a2n(&preason, *argv))
+                               invarg("invalid protodown reason\n", *argv);
+                       NEXT_ARG();
+                       prmask = 1 << preason;
+                       if (matches(*argv, "on") == 0)
+                               prvalue |= prmask;
+                       else if (matches(*argv, "off") == 0)
+                               prvalue &= ~prmask;
+                       else
+                               return on_off("protodown_reason", *argv);
+                       pr = addattr_nest(&req->n, sizeof(*req),
+                                         IFLA_PROTO_DOWN_REASON | NLA_F_NESTED);
+                       addattr32(&req->n, sizeof(*req),
+                                 IFLA_PROTO_DOWN_REASON_MASK, prmask);
+                       addattr32(&req->n, sizeof(*req),
+                                 IFLA_PROTO_DOWN_REASON_VALUE, prvalue);
+                       addattr_nest_end(&req->n, pr);
                } else if (strcmp(*argv, "gso_max_size") == 0) {
                        unsigned int max_size;