net: bridge: Add port attribute IFLA_BRPORT_MRP_RING_OPEN

This patch adds a new port attribute, IFLA_BRPORT_MRP_RING_OPEN, which allows
to notify the userspace when the port lost the continuite of MRP frames.

This attribute is set by kernel whenever the SW or HW detects that the ring is
being open or closed.

Reviewed-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
Signed-off-by: Horatiu Vultur <horatiu.vultur@microchip.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/include/uapi/linux/if_link.h b/include/uapi/linux/if_link.h
index 127c704..a009365 100644 (file)
--- a/include/uapi/linux/if_link.h
+++ b/include/uapi/linux/if_link.h
@@ -343,6 +343,7 @@ enum {
        IFLA_BRPORT_NEIGH_SUPPRESS,
        IFLA_BRPORT_ISOLATED,
        IFLA_BRPORT_BACKUP_PORT,
+       IFLA_BRPORT_MRP_RING_OPEN,
        __IFLA_BRPORT_MAX
 };
 #define IFLA_BRPORT_MAX (__IFLA_BRPORT_MAX - 1)

diff --git a/net/bridge/br_netlink.c b/net/bridge/br_netlink.c
index 43dab40..4084f1e 100644 (file)
--- a/net/bridge/br_netlink.c
+++ b/net/bridge/br_netlink.c
@@ -151,6 +151,7 @@ static inline size_t br_port_info_size(void)
                + nla_total_size(sizeof(u8))    /* IFLA_BRPORT_MULTICAST_ROUTER */
 #endif
                + nla_total_size(sizeof(u16))   /* IFLA_BRPORT_GROUP_FWD_MASK */
+               + nla_total_size(sizeof(u8))    /* IFLA_BRPORT_MRP_RING_OPEN */
                + 0;
 }
 
@@ -213,6 +214,8 @@ static int br_port_fill_attrs(struct sk_buff *skb,
            nla_put_u16(skb, IFLA_BRPORT_GROUP_FWD_MASK, p->group_fwd_mask) ||
            nla_put_u8(skb, IFLA_BRPORT_NEIGH_SUPPRESS,
                       !!(p->flags & BR_NEIGH_SUPPRESS)) ||
+           nla_put_u8(skb, IFLA_BRPORT_MRP_RING_OPEN, !!(p->flags &
+                                                         BR_MRP_LOST_CONT)) ||
            nla_put_u8(skb, IFLA_BRPORT_ISOLATED, !!(p->flags & BR_ISOLATED)))
                return -EMSGSIZE;
 

diff --git a/tools/include/uapi/linux/if_link.h b/tools/include/uapi/linux/if_link.h
index ca6665e..cafedbb 100644 (file)
--- a/tools/include/uapi/linux/if_link.h
+++ b/tools/include/uapi/linux/if_link.h
@@ -343,6 +343,7 @@ enum {
        IFLA_BRPORT_NEIGH_SUPPRESS,
        IFLA_BRPORT_ISOLATED,
        IFLA_BRPORT_BACKUP_PORT,
+       IFLA_BRPORT_MRP_RING_OPEN,
        __IFLA_BRPORT_MAX
 };
 #define IFLA_BRPORT_MAX (__IFLA_BRPORT_MAX - 1)