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bridge: netlink: export per-vlan stats

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Add a new LINK_XSTATS_TYPE_BRIDGE attribute and implement the
RTM_GETSTATS callbacks for IFLA_STATS_LINK_XSTATS (fill_linkxstats and
get_linkxstats_size) in order to export the per-vlan stats.
The paddings were added because soon these fields will be needed for
per-port per-vlan stats (or something else if someone beats me to it) so
avoiding at least a few more netlink attributes.

Signed-off-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Nikolay Aleksandrov
2016-04-30 10:25:29 +02:00
committed by David S. Miller
parent 6dada9b10a
commit a60c090361
5 changed files with 118 additions and 0 deletions
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27
net/bridge/br_vlan.c
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@@ -1054,3 +1054,30 @@ void nbp_vlan_flush(struct net_bridge_port *port)
synchronize_rcu();
__vlan_group_free(vg);
}
void br_vlan_get_stats(const struct net_bridge_vlan *v,
struct br_vlan_stats *stats)
{
int i;
memset(stats, 0, sizeof(*stats));
for_each_possible_cpu(i) {
u64 rxpackets, rxbytes, txpackets, txbytes;
struct br_vlan_stats *cpu_stats;
unsigned int start;
cpu_stats = per_cpu_ptr(v->stats, i);
do {
start = u64_stats_fetch_begin_irq(&cpu_stats->syncp);
rxpackets = cpu_stats->rx_packets;
rxbytes = cpu_stats->rx_bytes;
txbytes = cpu_stats->tx_bytes;
txpackets = cpu_stats->tx_packets;
} while (u64_stats_fetch_retry_irq(&cpu_stats->syncp, start));
stats->rx_packets += rxpackets;
stats->rx_bytes += rxbytes;
stats->tx_bytes += txbytes;
stats->tx_packets += txpackets;
}
}