/* 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]); }