This patch adds an option to have per-port vlan stats instead of the
default global stats. The option can be set only when there are no port
vlans in the bridge since we need to allocate the stats if it is set
when vlans are being added to ports (and respectively free them
when being deleted). Also bump RTNL_MAX_TYPE as the bridge is the
largest user of options. The current stats design allows us to add
these without any changes to the fast-path, it all comes down to
the per-vlan stats pointer which, if this option is enabled, will
be allocated for each port vlan instead of using the global bridge-wide
one.
CC: bridge@lists.linux-foundation.org
CC: Roopa Prabhu
Signed-off-by: Nikolay Aleksandrov
---
include/uapi/linux/if_link.h | 1 +
net/bridge/br_netlink.c | 14 ++-
net/bridge/br_private.h | 2 ++
net/bridge/br_sysfs_br.c | 17 +
net/bridge/br_vlan.c | 49 ++--
net/core/rtnetlink.c | 2 +-
6 files changed, 81 insertions(+), 4 deletions(-)
diff --git a/include/uapi/linux/if_link.h b/include/uapi/linux/if_link.h
index 58faab897201..1debfa42cba1 100644
--- a/include/uapi/linux/if_link.h
+++ b/include/uapi/linux/if_link.h
@@ -287,6 +287,7 @@ enum {
IFLA_BR_MCAST_STATS_ENABLED,
IFLA_BR_MCAST_IGMP_VERSION,
IFLA_BR_MCAST_MLD_VERSION,
+ IFLA_BR_VLAN_STATS_PER_PORT,
__IFLA_BR_MAX,
};
diff --git a/net/bridge/br_netlink.c b/net/bridge/br_netlink.c
index e5a5bc5d5232..3345f1984542 100644
--- a/net/bridge/br_netlink.c
+++ b/net/bridge/br_netlink.c
@@ -1034,6 +1034,7 @@ static const struct nla_policy br_policy[IFLA_BR_MAX + 1]
= {
[IFLA_BR_MCAST_STATS_ENABLED] = { .type = NLA_U8 },
[IFLA_BR_MCAST_IGMP_VERSION] = { .type = NLA_U8 },
[IFLA_BR_MCAST_MLD_VERSION] = { .type = NLA_U8 },
+ [IFLA_BR_VLAN_STATS_PER_PORT] = { .type = NLA_U8 },
};
static int br_changelink(struct net_device *brdev, struct nlattr *tb[],
@@ -1114,6 +1115,14 @@ static int br_changelink(struct net_device *brdev,
struct nlattr *tb[],
if (err)
return err;
}
+
+ if (data[IFLA_BR_VLAN_STATS_PER_PORT]) {
+ __u8 per_port = nla_get_u8(data[IFLA_BR_VLAN_STATS_PER_PORT]);
+
+ err = br_vlan_set_stats_per_port(br, per_port);
+ if (err)
+ return err;
+ }
#endif
if (data[IFLA_BR_GROUP_FWD_MASK]) {
@@ -1327,6 +1336,7 @@ static size_t br_get_size(const struct net_device *brdev)
nla_total_size(sizeof(__be16)) + /* IFLA_BR_VLAN_PROTOCOL */
nla_total_size(sizeof(u16)) +/* IFLA_BR_VLAN_DEFAULT_PVID */
nla_total_size(sizeof(u8)) + /* IFLA_BR_VLAN_STATS_ENABLED */
+ nla_total_size(sizeof(u8)) + /* IFLA_BR_VLAN_STATS_PER_PORT
*/
#endif
nla_total_size(sizeof(u16)) +/* IFLA_BR_GROUP_FWD_MASK */
nla_total_size(sizeof(struct ifla_bridge_id)) + /*
IFLA_BR_ROOT_ID */
@@ -1417,7 +1427,9 @@ static int br_fill_info(struct sk_buff *skb, const struct
net_device *brdev)
if (nla_put_be16(skb, IFLA_BR_VLAN_PROTOCOL, br->vlan_proto) ||
nla_put_u16(skb, IFLA_BR_VLAN_DEFAULT_PVID, br->default_pvid) ||
nla_put_u8(skb, IFLA_BR_VLAN_STATS_ENABLED,
- br_opt_get(br, BROPT_VLAN_STATS_ENABLED)))
+ br_opt_get(br, BROPT_VLAN_STATS_ENABLED)) ||
+ nla_put_u8(skb, IFLA_BR_VLAN_STATS_PER_PORT,
+ br_opt_get(br, IFLA_BR_VLAN_STATS_PER_PORT)))
return -EMSGSIZE;
#endif
#ifdef CONFIG_BRIDGE_IGMP_SNOOPING
diff --git a/net/bridge/br_private.h b/net/bridge/br_private.h
index 57229b9d800f..10ee39fdca5c 100644
--- a/net/bridge/br_private.h
+++ b/net/bridge/br_private.h
@@ -320,6 +320,7 @@ enum net_bridge_opts {
BROPT_HAS_IPV6_ADDR,
BROPT_NEIGH_SUPPRESS_ENABLED,
BROPT_MTU_SET_BY_USER,
+ BROPT_VLAN_STATS_PER_PORT,
};
struct net_bridge {
@@ -859,6 +860,7 @@ int br_vlan_filter_toggle(struct net_bridge *br, unsigned
long val);
int __br_vlan_set_proto(struct net_bridge *br, __be16 proto);
int br_vlan_set_proto(struct net_bridge *br, unsigned long val);
int br_vlan_set_stats(struct net_bridge *br, unsigned long val);
+int br_vlan_set_stats_per_port(struct net_bridge *br, unsigned long val);
int br_vlan_init(struct net_bridge *br);
int br_vlan_set_default_pvid(struct net_bridge *br, unsigned long val);
int __br_vlan_set_default_pvid(struct net_bridge *br, u16 pvid);
diff --git a/net/bridge/br_sysfs_br.c b/net/bridge/br_sysfs_br.c
index c93c5724609e..60182bef6341 100644
--- a/net/bridge/br_sysfs_br.c
+++ b/net/bridge/br_sysfs_br.c
@@ -803,6 +803,22 @@ static ssize_t vlan_stats_enabled_store(struct device *d,
return store_bridge_parm(d, buf, len, br_vlan_set_stats);
}
static DEVICE_ATTR_RW(vlan_stats_enabled);
+
+static ssize_t
