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diff --git a/sys/net/if.c b/sys/net/if.c
--- a/sys/net/if.c
+++ b/sys/net/if.c
@@ -1468,6 +1468,26 @@
IFNET_WUNLOCK();
}
+int
+if_foreach_group(struct ifnet *ifp, if_foreach_group_cb_t cb, void *cb_arg)
+{
+ struct ifg_list *ifgl;
+ int error;
+
+ MPASS(cb);
+
+ error = 0;
+ IFNET_RLOCK();
+ CK_STAILQ_FOREACH(ifgl, &ifp->if_groups, ifgl_next) {
+ error = cb(ifgl->ifgl_group->ifg_group, cb_arg);
+ if (error != 0)
+ break;
+ }
+ IFNET_RUNLOCK();
+
+ return (error);
+}
+
/*
* Stores all groups from an interface in memory pointed to by ifgr.
*/
diff --git a/sys/net/if_var.h b/sys/net/if_var.h
--- a/sys/net/if_var.h
+++ b/sys/net/if_var.h
@@ -525,6 +525,8 @@
#define MCDPRINTF(...)
#endif
+typedef int (*if_foreach_group_cb_t)(char[IFNAMSIZ], void *);
+int if_foreach_group(if_t, if_foreach_group_cb_t, void *);
int if_addgroup(if_t, const char *);
int if_delgroup(if_t, const char *);
int if_addmulti(if_t, struct sockaddr *, struct ifmultiaddr **);
diff --git a/sys/netlink/netlink_snl_route_parsers.h b/sys/netlink/netlink_snl_route_parsers.h
--- a/sys/netlink/netlink_snl_route_parsers.h
+++ b/sys/netlink/netlink_snl_route_parsers.h
@@ -177,6 +177,16 @@
sizeof(struct snl_parsed_route), _fp_p_route, _nla_p_route,
_cb_p_route);
+struct iflaf_group {
+ uint32_t num_groups;
+ char **groups;
+};
+
+static const struct snl_attr_parser _nla_p_ifgroups[] = {
+ { .type = IFLAF_GROUP, .cb = snl_attr_copy_string, .arg_u32 = sizeof(char[IFNAMSIZ]) },
+};
+SNL_DECLARE_ATTR_PARSER_EXT(_ifgroups_parser, sizeof(char[IFNAMSIZ]), _nla_p_ifgroups, NULL);
+
/* RTM_<NEW|DEL|GET>LINK message parser */
struct snl_parsed_link {
uint32_t ifi_index;
@@ -194,6 +204,7 @@
struct rtnl_link_stats64 *ifla_stats64;
struct nlattr *iflaf_orig_hwaddr;
struct snl_attr_bitset iflaf_caps;
+ struct iflaf_group iflaf_groups;
};
#define _IN(_field) offsetof(struct ifinfomsg, _field)
@@ -201,6 +212,8 @@
static const struct snl_attr_parser _nla_p_link_fbsd[] = {
{ .type = IFLAF_ORIG_HWADDR, .off = _OUT(iflaf_orig_hwaddr), .cb = snl_attr_dup_nla },
{ .type = IFLAF_CAPS, .off = _OUT(iflaf_caps), .cb = snl_attr_get_bitset_c },
+ { .type = IFLAF_GROUP, .off = _OUT(iflaf_groups), .cb = snl_attr_get_parray,
+ .arg = &_ifgroups_parser },
};
SNL_DECLARE_ATTR_PARSER(_link_fbsd_parser, _nla_p_link_fbsd);
diff --git a/sys/netlink/route/iface.c b/sys/netlink/route/iface.c
--- a/sys/netlink/route/iface.c
+++ b/sys/netlink/route/iface.c
@@ -204,6 +204,40 @@
}
}
+static int
+dump_group_cb(char group[IFNAMSIZ], void *_arg)
+{
+ struct nl_writer *nw = (struct nl_writer *)_arg;
+ bool ret;
+
+ int off = nlattr_add_nested(nw, IFLAF_GROUP);
+ if (off == 0)
+ return (ENOMEM);
+
+ ret = nlattr_add_string(nw, IFLAF_GROUP, group);
+ if (!ret) {
+ nlattr_set_len(nw, off);
+ return (ENOMEM);
+ }
+
+ nlattr_set_len(nw, off);
+ return (0);
+}
+
+static void
+dump_group(struct nl_writer *nw, if_t ifp)
+{
+ int off;
+
+ off = nlattr_add_nested(nw, IFLAF_GROUP);
+ if (off == 0)
+ return;
+
+ if_foreach_group(ifp, dump_group_cb, nw);
+ nlattr_set_len(nw, off);
+}
+
+
static unsigned
ifp_flags_to_netlink(const if_t ifp)
{
@@ -344,7 +378,6 @@
/*
nlattr_add_u32(nw, IFLA_MIN_MTU, 60);
nlattr_add_u32(nw, IFLA_MAX_MTU, 9000);
- nlattr_add_u32(nw, IFLA_GROUP, 0);
*/
if (if_getdescr(ifp) != NULL)
@@ -355,6 +388,7 @@
if (off != 0) {
get_hwaddr(nw, ifp);
dump_iface_caps(nw, ifp);
+ dump_group(nw, ifp);
nlattr_set_len(nw, off);
}
diff --git a/sys/netlink/route/interface.h b/sys/netlink/route/interface.h
--- a/sys/netlink/route/interface.h
+++ b/sys/netlink/route/interface.h
@@ -152,6 +152,7 @@
IFLAF_ORIG_IFNAME = 1, /* string, original interface name at creation */
IFLAF_ORIG_HWADDR = 2, /* binary, original hardware address */
IFLAF_CAPS = 3, /* bitset, interface capabilities */
+ IFLAF_GROUP = 4, /* string, interface group name (multi-attr) */
__IFLAF_MAX
};
#define IFLAF_MAX (__IFLAF_MAX - 1)

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