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/*
* Copyright (c) 2009, 2010 Nicira Networks.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <config.h>
#include "xflow-util.h"
#include <inttypes.h>
#include <stdlib.h>
#include <string.h>
#include "coverage.h"
#include "dynamic-string.h"
#include "flow.h"
#include "packets.h"
#include "timeval.h"
#include "util.h"
union xflow_action *
xflow_actions_add(struct xflow_actions *actions, uint16_t type)
{
union xflow_action *a;
size_t idx;
idx = actions->n_actions++ & (MAX_XFLOW_ACTIONS - 1);
a = &actions->actions[idx];
memset(a, 0, sizeof *a);
a->type = type;
return a;
}
void
format_xflow_key(struct ds *ds, const struct xflow_key *key)
{
ds_put_format(ds, "tunnel%"PRIx32":in_port%04x",
key->tun_id, key->in_port);
if (key->dl_tci) {
ds_put_format(ds, ":vlan%"PRIu16":pcp%d",
vlan_tci_to_vid(key->dl_tci),
vlan_tci_to_pcp(key->dl_tci));
}
ds_put_format(ds, " mac"ETH_ADDR_FMT"->"ETH_ADDR_FMT" type%04x "
"proto%"PRId8" tos%"PRIu8" ip"IP_FMT"->"IP_FMT" port%d->%d",
ETH_ADDR_ARGS(key->dl_src), ETH_ADDR_ARGS(key->dl_dst),
ntohs(key->dl_type), key->nw_proto, key->nw_tos,
IP_ARGS(&key->nw_src), IP_ARGS(&key->nw_dst),
ntohs(key->tp_src), ntohs(key->tp_dst));
}
void
format_xflow_action(struct ds *ds, const union xflow_action *a)
{
switch (a->type) {
case XFLOWAT_OUTPUT:
ds_put_format(ds, "%"PRIu16, a->output.port);
break;
case XFLOWAT_OUTPUT_GROUP:
ds_put_format(ds, "g%"PRIu16, a->output_group.group);
break;
case XFLOWAT_CONTROLLER:
ds_put_format(ds, "ctl(%"PRIu32")", a->controller.arg);
break;
case XFLOWAT_SET_TUNNEL:
ds_put_format(ds, "set_tunnel(0x%08"PRIx32")", ntohl(a->tunnel.tun_id));
break;
case XFLOWAT_SET_DL_TCI:
ds_put_format(ds, "set_tci(%04"PRIx16",mask=%04"PRIx16")",
ntohs(a->dl_tci.tci), ntohs(a->dl_tci.mask));
break;
case XFLOWAT_STRIP_VLAN:
ds_put_format(ds, "strip_vlan");
break;
case XFLOWAT_SET_DL_SRC:
ds_put_format(ds, "set_dl_src("ETH_ADDR_FMT")",
ETH_ADDR_ARGS(a->dl_addr.dl_addr));
break;
case XFLOWAT_SET_DL_DST:
ds_put_format(ds, "set_dl_dst("ETH_ADDR_FMT")",
ETH_ADDR_ARGS(a->dl_addr.dl_addr));
break;
case XFLOWAT_SET_NW_SRC:
ds_put_format(ds, "set_nw_src("IP_FMT")",
IP_ARGS(&a->nw_addr.nw_addr));
break;
case XFLOWAT_SET_NW_DST:
ds_put_format(ds, "set_nw_dst("IP_FMT")",
IP_ARGS(&a->nw_addr.nw_addr));
break;
case XFLOWAT_SET_NW_TOS:
ds_put_format(ds, "set_nw_tos(%"PRIu8")", a->nw_tos.nw_tos);
break;
case XFLOWAT_SET_TP_SRC:
ds_put_format(ds, "set_tp_src(%"PRIu16")", ntohs(a->tp_port.tp_port));
break;
case XFLOWAT_SET_TP_DST:
ds_put_format(ds, "set_tp_dst(%"PRIu16")", ntohs(a->tp_port.tp_port));
break;
case XFLOWAT_SET_PRIORITY:
ds_put_format(ds, "set_priority(0x%"PRIx32")", a->priority.priority);
break;
case XFLOWAT_POP_PRIORITY:
ds_put_cstr(ds, "pop_priority");
break;
case XFLOWAT_DROP_SPOOFED_ARP:
ds_put_cstr(ds, "drop_spoofed_arp");
break;
default:
ds_put_format(ds, "***bad action 0x%"PRIx16"***", a->type);
break;
}
}
void
format_xflow_actions(struct ds *ds, const union xflow_action *actions,
size_t n_actions)
{
size_t i;
for (i = 0; i < n_actions; i++) {
if (i) {
ds_put_char(ds, ',');
}
format_xflow_action(ds, &actions[i]);
}
if (!n_actions) {
ds_put_cstr(ds, "drop");
}
}
void
format_xflow_flow_stats(struct ds *ds, const struct xflow_flow_stats *s)
{
ds_put_format(ds, "packets:%llu, bytes:%llu, used:",
(unsigned long long int) s->n_packets,
(unsigned long long int) s->n_bytes);
if (s->used_sec) {
long long int used = s->used_sec * 1000 + s->used_nsec / 1000000;
ds_put_format(ds, "%.3fs", (time_msec() - used) / 1000.0);
} else {
ds_put_format(ds, "never");
}
}
void
format_xflow_flow(struct ds *ds, const struct xflow_flow *f)
{
format_xflow_key(ds, &f->key);
ds_put_cstr(ds, ", ");
format_xflow_flow_stats(ds, &f->stats);
ds_put_cstr(ds, ", actions:");
format_xflow_actions(ds, f->actions, f->n_actions);
}
void
xflow_key_from_flow(struct xflow_key *key, const struct flow *flow)
{
key->tun_id = flow->tun_id;
key->nw_src = flow->nw_src;
key->nw_dst = flow->nw_dst;
key->in_port = ofp_port_to_xflow_port(flow->in_port);
if (flow->dl_vlan == htons(OFP_VLAN_NONE)) {
key->dl_tci = htons(0);
} else {
uint16_t vid = flow->dl_vlan & htons(VLAN_VID_MASK);
uint16_t pcp = htons((flow->dl_vlan_pcp << VLAN_PCP_SHIFT)
& VLAN_PCP_MASK);
key->dl_tci = vid | pcp | htons(XFLOW_TCI_PRESENT);
}
key->dl_type = flow->dl_type;
key->tp_src = flow->tp_src;
key->tp_dst = flow->tp_dst;
memcpy(key->dl_src, flow->dl_src, ETH_ADDR_LEN);
memcpy(key->dl_dst, flow->dl_dst, ETH_ADDR_LEN);
key->nw_proto = flow->nw_proto;
key->nw_tos = flow->nw_tos;
}
void
xflow_key_to_flow(const struct xflow_key *key, struct flow *flow)
{
flow->wildcards = 0;
flow->priority = 0xffff;
flow->tun_id = key->tun_id;
flow->nw_src = key->nw_src;
flow->nw_dst = key->nw_dst;
flow->in_port = xflow_port_to_ofp_port(key->in_port);
if (key->dl_tci) {
flow->dl_vlan = htons(vlan_tci_to_vid(key->dl_tci));
flow->dl_vlan_pcp = vlan_tci_to_pcp(key->dl_tci);
} else {
flow->dl_vlan = htons(OFP_VLAN_NONE);
flow->dl_vlan_pcp = 0;
}
flow->dl_type = key->dl_type;
flow->tp_src = key->tp_src;
flow->tp_dst = key->tp_dst;
memcpy(flow->dl_src, key->dl_src, ETH_ADDR_LEN);
memcpy(flow->dl_dst, key->dl_dst, ETH_ADDR_LEN);
flow->nw_proto = key->nw_proto;
flow->nw_tos = key->nw_tos;
}
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