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bridge: Extend br_fill_ifinfo to return MPR status 

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 <horatiu.vultur@microchip.com>
Acked-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Horatiu Vultur 2020-07-02 10:13:07 +02:00 committed by David S. Miller
parent df42ef227d
commit 36a8e8e265
2 changed files with 25 additions and 1 deletions
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1
include/uapi/linux/rtnetlink.h
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 */

25
net/bridge/br_netlink.c
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,