/* Must be called with rcu_read_lock or ovs_mutex. */
void ovs_flow_stats_get(const struct sw_flow *flow,
struct ovs_flow_stats *ovs_stats,
unsigned long *used, __be16 *tcp_flags)
{
int node;
*used = 0;
*tcp_flags = 0;
memset(ovs_stats, 0, sizeof(*ovs_stats));
for_each_node(node) {
struct flow_stats *stats = rcu_dereference_ovsl(flow->stats[node]);
if (stats) {
/* Local CPU may write on non-local stats, so we must
* block bottom-halves here.
*/
spin_lock_bh(&stats->lock);
if (!*used || time_after(stats->used, *used))
*used = stats->used;
*tcp_flags |= stats->tcp_flags;
ovs_stats->n_packets += stats->packet_count;
ovs_stats->n_bytes += stats->byte_count;
spin_unlock_bh(&stats->lock);
}
}
}
/**
* ovs_vport_get_upcall_portids - get the upcall_portids of @vport.
*
* @vport: vport from which to retrieve the portids.
* @skb: sk_buff where portids should be appended.
*
* Retrieves the configuration of the given vport, appending the
* %OVS_VPORT_ATTR_UPCALL_PID attribute which is the array of upcall
* portids to @skb.
*
* Returns 0 if successful, -EMSGSIZE if @skb has insufficient room.
* If an error occurs, @skb is left unmodified. Must be called with
* ovs_mutex or rcu_read_lock.
*/
int ovs_vport_get_upcall_portids(const struct vport *vport,
struct sk_buff *skb)
{
struct vport_portids *ids;
ids = rcu_dereference_ovsl(vport->upcall_portids);
if (vport->dp->user_features & OVS_DP_F_VPORT_PIDS)
return nla_put(skb, OVS_VPORT_ATTR_UPCALL_PID,
ids->n_ids * sizeof(u32), (void *)ids->ids);
else
return nla_put_u32(skb, OVS_VPORT_ATTR_UPCALL_PID, ids->ids[0]);
}