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bridge: Extend br_fill_ifinfo to return MPR status

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This patch extends the function br_fill_ifinfo to return also the MRP
status for each instance on a bridge. It also adds a new filter
RTEXT_FILTER_MRP to return the MRP status only when this is set, not to
interfer with the vlans. The MRP status is return only on the bridge
interfaces.

Signed-off-by: Horatiu Vultur <[email protected]>
Acked-by: Nikolay Aleksandrov <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
This commit is contained in:
Horatiu Vultur authored and David S. Miller committed 2020-07-02 14:19:15 -07:00
1 parent df42ef227d
commit 36a8e8e265
2 files changed
+25 -1
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include/uapi/linux/rtnetlink.h
+1
View File
@@ -778,6 +778,7 @@ enum {
#define RTEXT_FILTER_BRVLAN (1 << 1)
#define RTEXT_FILTER_BRVLAN_COMPRESSED (1 << 2)
#define RTEXT_FILTER_SKIP_STATS (1 << 3)
#define RTEXT_FILTER_MRP (1 << 4)
/* End of information exported to user level */
net/bridge/br_netlink.c
+24 -1
View File
@@ -453,6 +453,28 @@ static int br_fill_ifinfo(struct sk_buff *skb,
rcu_read_unlock();
if (err)
goto nla_put_failure;
nla_nest_end(skb, af);
}
if (filter_mask & RTEXT_FILTER_MRP) {
struct nlattr *af;
int err;
if (!br_mrp_enabled(br) || port)
goto done;
af = nla_nest_start_noflag(skb, IFLA_AF_SPEC);
if (!af)
goto nla_put_failure;
rcu_read_lock();
err = br_mrp_fill_info(skb, br);
rcu_read_unlock();
if (err)
goto nla_put_failure;
nla_nest_end(skb, af);
}
@@ -516,7 +538,8 @@ int br_getlink(struct sk_buff *skb, u32 pid, u32 seq,
struct net_bridge_port *port = br_port_get_rtnl(dev);
if (!port && !(filter_mask & RTEXT_FILTER_BRVLAN) &&
!(filter_mask & RTEXT_FILTER_BRVLAN_COMPRESSED))
!(filter_mask & RTEXT_FILTER_BRVLAN_COMPRESSED) &&
!(filter_mask & RTEXT_FILTER_MRP))
return 0;
return br_fill_ifinfo(skb, port, pid, seq, RTM_NEWLINK, nlflags,