On 22/04/2020 19:18, Horatiu Vultur wrote:
> 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.
>
> Signed-off-by: Horatiu Vultur <horatiu.vultur@xxxxxxxxxxxxx>
> ---
> include/uapi/linux/if_link.h | 1 +
> net/bridge/br_netlink.c | 3 +++
> tools/include/uapi/linux/if_link.h | 1 +
> 3 files changed, 5 insertions(+)
>
> diff --git a/include/uapi/linux/if_link.h b/include/uapi/linux/if_link.h
> index 61e0801c82df..4a295deb933b 100644
> --- 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 43dab4066f91..4084f1ef8641 100644
> --- 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 024af2d1d0af..70dae9ba16f4 100644
> --- 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)
>
Reviewed-by: Nikolay Aleksandrov <nikolay@xxxxxxxxxxxxxxxxxxx>
