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From:   Horatiu Vultur <horatiu.vultur@microchip.com>
To:     <nikolay@cumulusnetworks.com>, <roopa@cumulusnetworks.com>,
        <davem@davemloft.net>, <kuba@kernel.org>, <jiri@resnulli.us>,
        <ivecera@redhat.com>, <andrew@lunn.ch>,
        <UNGLinuxDriver@microchip.com>, <netdev@vger.kernel.org>,
        <linux-kernel@vger.kernel.org>, <bridge@lists.linux-foundation.org>
CC:     Horatiu Vultur <horatiu.vultur@microchip.com>
Subject: [PATCH net-next v3 12/12] net: bridge: Add port attribute IFLA_BRPORT_MRP_IN_OPEN
Date:   Sun, 12 Jul 2020 16:05:56 +0200
Message-ID: <20200712140556.1758725-13-horatiu.vultur@microchip.com>
In-Reply-To: <20200712140556.1758725-1-horatiu.vultur@microchip.com>
References: <20200712140556.1758725-1-horatiu.vultur@microchip.com>
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This patch adds a new port attribute, IFLA_BRPORT_MRP_IN_OPEN, which
allows to notify the userspace when the node lost the contiuity of
MRP_InTest frames.

Signed-off-by: Horatiu Vultur <horatiu.vultur@microchip.com>
---
 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 cc185a007ade8..26842ffd0501d 100644
--- a/include/uapi/linux/if_link.h
+++ b/include/uapi/linux/if_link.h
@@ -344,6 +344,7 @@ enum {
 	IFLA_BRPORT_ISOLATED,
 	IFLA_BRPORT_BACKUP_PORT,
 	IFLA_BRPORT_MRP_RING_OPEN,
+	IFLA_BRPORT_MRP_IN_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 c532fa65c9834..147d52596e174 100644
--- a/net/bridge/br_netlink.c
+++ b/net/bridge/br_netlink.c
@@ -152,6 +152,7 @@ static inline size_t br_port_info_size(void)
 #endif
 		+ nla_total_size(sizeof(u16))	/* IFLA_BRPORT_GROUP_FWD_MASK */
 		+ nla_total_size(sizeof(u8))	/* IFLA_BRPORT_MRP_RING_OPEN */
+		+ nla_total_size(sizeof(u8))	/* IFLA_BRPORT_MRP_IN_OPEN */
 		+ 0;
 }
 
@@ -216,6 +217,8 @@ static int br_port_fill_attrs(struct sk_buff *skb,
 		       !!(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_MRP_IN_OPEN,
+		       !!(p->flags & BR_MRP_LOST_IN_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 cafedbbfefbe9..781e482dc499f 100644
--- a/tools/include/uapi/linux/if_link.h
+++ b/tools/include/uapi/linux/if_link.h
@@ -344,6 +344,7 @@ enum {
 	IFLA_BRPORT_ISOLATED,
 	IFLA_BRPORT_BACKUP_PORT,
 	IFLA_BRPORT_MRP_RING_OPEN,
+	IFLA_BRPORT_MRP_IN_OPEN,
 	__IFLA_BRPORT_MAX
 };
 #define IFLA_BRPORT_MAX (__IFLA_BRPORT_MAX - 1)
-- 
2.27.0