From 036e314bd93602f7388262cc37faf8b626980af1 Mon Sep 17 00:00:00 2001
From: Gary Loughnane <gary.loughnane@intel.com>
Date: Mon, 17 Aug 2015 21:19:24 +0000
Subject: [PATCH] lldpad: system capability incorrect advertised as station
 only

Fix system capability TLV on switch. On our switches we have found
that the system capability was being advertised as Station Only. This
patch changes the capability to Bridge.

Signed-off-by: Gary Loughnane <gary.loughnane@intel.com>
Signed-off-by: John Fastabend <john.r.fastabend@intel.com>
---
 include/lldp_util.h |  1 +
 lldp_util.c         | 22 +++++++++++++++++++++-
 2 files changed, 22 insertions(+), 1 deletion(-)

diff --git a/include/lldp_util.h b/include/lldp_util.h
index 878426b..69b67b1 100644
--- a/include/lldp_util.h
+++ b/include/lldp_util.h
@@ -125,6 +125,7 @@ int is_active(const char *ifname);
 int is_bond(const char *ifname);
 int is_san_mac(u8 *addr);
 int is_bridge(const char *ifname);
+int is_bridge_port(const char *ifname);
 int is_vlan(const char *ifname);
 int is_vlan_capable(const char *ifname);
 int is_wlan(const char *ifname);
diff --git a/lldp_util.c b/lldp_util.c
index f1fb7b9..62f0af8 100644
--- a/lldp_util.c
+++ b/lldp_util.c
@@ -580,6 +580,26 @@ int is_bridge(const char *ifname)
 	return rc;
 }
 
+int is_bridge_port(const char *ifname)
+{
+	int rc = 0;
+	char path[256];
+	DIR *dirp;
+
+	if (!is_ether(ifname)) {
+		return 0;
+	}
+	/* check if the given ifname is a bridge port in sysfs */
+	snprintf(path, sizeof(path), "/sys/class/net/%s/brport/", ifname);
+	dirp = opendir(path);
+	if (dirp) {
+		closedir(dirp);
+		rc = 1;
+	}
+
+	return rc;
+}
+
 int is_vlan(const char *ifname)
 {
 	int fd;
@@ -942,7 +962,7 @@ u16 get_caps(const char *ifname)
 	if (is_vlan(ifname))
 		caps |= SYSCAP_CVLAN;
 
-	if (is_bridge(ifname))
+	if (is_bridge_port(ifname))
 		caps |= SYSCAP_BRIDGE;
 
 	if (is_router())
-- 
2.5.5