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authorVivien Didelot <vivien.didelot@gmail.com>2019-12-11 20:07:10 -0500
committerJakub Kicinski <jakub.kicinski@netronome.com>2019-12-14 20:02:36 -0800
commitde1799667b002331609e8ee6b924ccfd51968d99 (patch)
treee8793d7755a11bd522455a4913cdb24788dd9086
parentea6a547669b37453f2b1a5d85188d75b3613dfaa (diff)
net: bridge: add STP xstats
This adds rx_bpdu, tx_bpdu, rx_tcn, tx_tcn, transition_blk, transition_fwd xstats counters to the bridge ports copied over via netlink, providing useful information for STP. Signed-off-by: Vivien Didelot <vivien.didelot@gmail.com> Acked-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com> Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
-rw-r--r--include/uapi/linux/if_bridge.h10
-rw-r--r--net/bridge/br_netlink.c13
-rw-r--r--net/bridge/br_private.h2
-rw-r--r--net/bridge/br_stp.c15
-rw-r--r--net/bridge/br_stp_bpdu.c4
5 files changed, 44 insertions, 0 deletions
diff --git a/include/uapi/linux/if_bridge.h b/include/uapi/linux/if_bridge.h
index 1b3c2b643a02..4a58e3d7de46 100644
--- a/include/uapi/linux/if_bridge.h
+++ b/include/uapi/linux/if_bridge.h
@@ -156,6 +156,15 @@ struct bridge_vlan_xstats {
__u32 pad2;
};
+struct bridge_stp_xstats {
+ __u64 transition_blk;
+ __u64 transition_fwd;
+ __u64 rx_bpdu;
+ __u64 tx_bpdu;
+ __u64 rx_tcn;
+ __u64 tx_tcn;
+};
+
/* Bridge multicast database attributes
* [MDBA_MDB] = {
* [MDBA_MDB_ENTRY] = {
@@ -262,6 +271,7 @@ enum {
BRIDGE_XSTATS_VLAN,
BRIDGE_XSTATS_MCAST,
BRIDGE_XSTATS_PAD,
+ BRIDGE_XSTATS_STP,
__BRIDGE_XSTATS_MAX
};
#define BRIDGE_XSTATS_MAX (__BRIDGE_XSTATS_MAX - 1)
diff --git a/net/bridge/br_netlink.c b/net/bridge/br_netlink.c
index a0a54482aabc..60136575aea4 100644
--- a/net/bridge/br_netlink.c
+++ b/net/bridge/br_netlink.c
@@ -1607,6 +1607,19 @@ static int br_fill_linkxstats(struct sk_buff *skb,
br_multicast_get_stats(br, p, nla_data(nla));
}
#endif
+
+ if (p) {
+ nla = nla_reserve_64bit(skb, BRIDGE_XSTATS_STP,
+ sizeof(p->stp_xstats),
+ BRIDGE_XSTATS_PAD);
+ if (!nla)
+ goto nla_put_failure;
+
+ spin_lock_bh(&br->lock);
+ memcpy(nla_data(nla), &p->stp_xstats, sizeof(p->stp_xstats));
+ spin_unlock_bh(&br->lock);
+ }
+
nla_nest_end(skb, nest);
*prividx = 0;
diff --git a/net/bridge/br_private.h b/net/bridge/br_private.h
index 36b0367ca1e0..f540f3bdf294 100644
--- a/net/bridge/br_private.h
+++ b/net/bridge/br_private.h
@@ -283,6 +283,8 @@ struct net_bridge_port {
#endif
u16 group_fwd_mask;
u16 backup_redirected_cnt;
+
+ struct bridge_stp_xstats stp_xstats;
};
#define kobj_to_brport(obj) container_of(obj, struct net_bridge_port, kobj)
diff --git a/net/bridge/br_stp.c b/net/bridge/br_stp.c
index 1f1410f8d312..6856a6d9282b 100644
--- a/net/bridge/br_stp.c
+++ b/net/bridge/br_stp.c
@@ -45,6 +45,17 @@ void br_set_state(struct net_bridge_port *p, unsigned int state)
br_info(p->br, "port %u(%s) entered %s state\n",
(unsigned int) p->port_no, p->dev->name,
br_port_state_names[p->state]);
+
+ if (p->br->stp_enabled == BR_KERNEL_STP) {
+ switch (p->state) {
+ case BR_STATE_BLOCKING:
+ p->stp_xstats.transition_blk++;
+ break;
+ case BR_STATE_FORWARDING:
+ p->stp_xstats.transition_fwd++;
+ break;
+ }
+ }
}
/* called under bridge lock */
@@ -484,6 +495,8 @@ void br_received_config_bpdu(struct net_bridge_port *p,
struct net_bridge *br;
int was_root;
+ p->stp_xstats.rx_bpdu++;
+
br = p->br;
was_root = br_is_root_bridge(br);
@@ -517,6 +530,8 @@ void br_received_config_bpdu(struct net_bridge_port *p,
/* called under bridge lock */
void br_received_tcn_bpdu(struct net_bridge_port *p)
{
+ p->stp_xstats.rx_tcn++;
+
if (br_is_designated_port(p)) {
br_info(p->br, "port %u(%s) received tcn bpdu\n",
(unsigned int) p->port_no, p->dev->name);
diff --git a/net/bridge/br_stp_bpdu.c b/net/bridge/br_stp_bpdu.c
index 7796dd9d42d7..0e4572f31330 100644
--- a/net/bridge/br_stp_bpdu.c
+++ b/net/bridge/br_stp_bpdu.c
@@ -118,6 +118,8 @@ void br_send_config_bpdu(struct net_bridge_port *p, struct br_config_bpdu *bpdu)
br_set_ticks(buf+33, bpdu->forward_delay);
br_send_bpdu(p, buf, 35);
+
+ p->stp_xstats.tx_bpdu++;
}
/* called under bridge lock */
@@ -133,6 +135,8 @@ void br_send_tcn_bpdu(struct net_bridge_port *p)
buf[2] = 0;
buf[3] = BPDU_TYPE_TCN;
br_send_bpdu(p, buf, 4);
+
+ p->stp_xstats.tx_tcn++;
}
/*