lib/odp-util.c

   1 /*
   2  * Copyright (c) 2009, 2010 Nicira Networks.
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at:
   7  *
   8  *     http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16
  17 #include <config.h>
  18 #include "odp-util.h"
  19 #include <inttypes.h>
  20 #include <stdlib.h>
  21 #include <string.h>
  22 #include "coverage.h"
  23 #include "dynamic-string.h"
  24 #include "flow.h"
  25 #include "packets.h"
  26 #include "timeval.h"
  27 #include "util.h"
  28
  29 union odp_action *
  30 odp_actions_add(struct odp_actions *actions, uint16_t type)
  31 {
  32     union odp_action *a;
  33     size_t idx;
  34
  35     idx = actions->n_actions++ & (MAX_ODP_ACTIONS - 1);
  36     a = &actions->actions[idx];
  37     memset(a, 0, sizeof *a);
  38     a->type = type;
  39     return a;
  40 }
  41
  42 void
  43 format_odp_flow_key(struct ds *ds, const struct odp_flow_key *key)
  44 {
  45     ds_put_format(ds, "in_port%04x tci(", key->in_port);
  46     if (key->dl_tci) {
  47         ds_put_format(ds, "vlan%"PRIu16",pcp%d",
  48                       vlan_tci_to_vid(key->dl_tci),
  49                       vlan_tci_to_pcp(key->dl_tci));
  50     } else {
  51         ds_put_char(ds, '0');
  52     }
  53     ds_put_format(ds, ") mac"ETH_ADDR_FMT"->"ETH_ADDR_FMT" type%04x "
  54                   "proto%"PRId8" tos%"PRIu8" ip"IP_FMT"->"IP_FMT" port%d->%d",
  55                   ETH_ADDR_ARGS(key->dl_src), ETH_ADDR_ARGS(key->dl_dst),
  56                   ntohs(key->dl_type), key->nw_proto, key->nw_tos,
  57                   IP_ARGS(&key->nw_src), IP_ARGS(&key->nw_dst),
  58                   ntohs(key->tp_src), ntohs(key->tp_dst));
  59 }
  60
  61 void
  62 format_odp_action(struct ds *ds, const union odp_action *a)
  63 {
  64     switch (a->type) {
  65     case ODPAT_OUTPUT:
  66         ds_put_format(ds, "%"PRIu16, a->output.port);
  67         break;
  68     case ODPAT_CONTROLLER:
  69         ds_put_format(ds, "ctl(%"PRIu32")", a->controller.arg);
  70         break;
  71     case ODPAT_SET_TUNNEL:
  72         ds_put_format(ds, "set_tunnel(0x%08"PRIx32")", ntohl(a->tunnel.tun_id));
  73         break;
  74     case ODPAT_SET_DL_TCI:
  75         ds_put_format(ds, "set_tci(vid=%"PRIu16",pcp=%d)",
  76                       vlan_tci_to_vid(a->dl_tci.tci),
  77                       vlan_tci_to_pcp(a->dl_tci.tci));
  78         break;
  79     case ODPAT_STRIP_VLAN:
  80         ds_put_format(ds, "strip_vlan");
  81         break;
  82     case ODPAT_SET_DL_SRC:
  83         ds_put_format(ds, "set_dl_src("ETH_ADDR_FMT")",
  84                ETH_ADDR_ARGS(a->dl_addr.dl_addr));
  85         break;
  86     case ODPAT_SET_DL_DST:
  87         ds_put_format(ds, "set_dl_dst("ETH_ADDR_FMT")",
  88                ETH_ADDR_ARGS(a->dl_addr.dl_addr));
  89         break;
  90     case ODPAT_SET_NW_SRC:
  91         ds_put_format(ds, "set_nw_src("IP_FMT")",
  92                       IP_ARGS(&a->nw_addr.nw_addr));
  93         break;
  94     case ODPAT_SET_NW_DST:
  95         ds_put_format(ds, "set_nw_dst("IP_FMT")",
  96                       IP_ARGS(&a->nw_addr.nw_addr));
  97         break;
  98     case ODPAT_SET_NW_TOS:
  99         ds_put_format(ds, "set_nw_tos(%"PRIu8")", a->nw_tos.nw_tos);
 100         break;
 101     case ODPAT_SET_TP_SRC:
 102         ds_put_format(ds, "set_tp_src(%"PRIu16")", ntohs(a->tp_port.tp_port));
 103         break;
 104     case ODPAT_SET_TP_DST:
 105         ds_put_format(ds, "set_tp_dst(%"PRIu16")", ntohs(a->tp_port.tp_port));
 106         break;
 107     case ODPAT_SET_PRIORITY:
 108         ds_put_format(ds, "set_priority(0x%"PRIx32")", a->priority.priority);
 109         break;
 110     case ODPAT_POP_PRIORITY:
 111         ds_put_cstr(ds, "pop_priority");
 112         break;
 113     case ODPAT_DROP_SPOOFED_ARP:
 114         ds_put_cstr(ds, "drop_spoofed_arp");
 115         break;
 116     default:
 117         ds_put_format(ds, "***bad action 0x%"PRIx16"***", a->type);
 118         break;
 119     }
 120 }
 121
 122 void
 123 format_odp_actions(struct ds *ds, const union odp_action *actions,
 124                    size_t n_actions)
 125 {
 126     size_t i;
 127     for (i = 0; i < n_actions; i++) {
 128         if (i) {
 129             ds_put_char(ds, ',');
 130         }
 131         format_odp_action(ds, &actions[i]);
 132     }
 133     if (!n_actions) {
 134         ds_put_cstr(ds, "drop");
 135     }
 136 }
 137
 138 void
 139 format_odp_flow_stats(struct ds *ds, const struct odp_flow_stats *s)
 140 {
 141     ds_put_format(ds, "packets:%llu, bytes:%llu, used:",
 142                   (unsigned long long int) s->n_packets,
 143                   (unsigned long long int) s->n_bytes);
 144     if (s->used_sec) {
 145         long long int used = s->used_sec * 1000 + s->used_nsec / 1000000;
 146         ds_put_format(ds, "%.3fs", (time_msec() - used) / 1000.0);
 147     } else {
 148         ds_put_format(ds, "never");
 149     }
 150 }
 151
 152 void
 153 format_odp_flow(struct ds *ds, const struct odp_flow *f)
 154 {
 155     format_odp_flow_key(ds, &f->key);
 156     ds_put_cstr(ds, ", ");
 157     format_odp_flow_stats(ds, &f->stats);
 158     ds_put_cstr(ds, ", actions:");
 159     format_odp_actions(ds, f->actions, f->n_actions);
 160 }
 161 \f
 162 void
 163 odp_flow_key_from_flow(struct odp_flow_key *key, const struct flow *flow)
 164 {
 165     key->tun_id = flow->tun_id;
 166     key->nw_src = flow->nw_src;
 167     key->nw_dst = flow->nw_dst;
 168     key->in_port = flow->in_port;
 169     if (flow->dl_vlan == htons(OFP_VLAN_NONE)) {
 170         key->dl_tci = htons(0);
 171     } else {
 172         uint16_t vid = flow->dl_vlan & htons(VLAN_VID_MASK);
 173         uint16_t pcp = htons((flow->dl_vlan_pcp << VLAN_PCP_SHIFT)
 174                              & VLAN_PCP_MASK);
 175         key->dl_tci = vid | pcp | htons(ODP_TCI_PRESENT);
 176     }
 177     key->dl_type = flow->dl_type;
 178     key->tp_src = flow->tp_src;
 179     key->tp_dst = flow->tp_dst;
 180     memcpy(key->dl_src, flow->dl_src, ETH_ADDR_LEN);
 181     memcpy(key->dl_dst, flow->dl_dst, ETH_ADDR_LEN);
 182     key->nw_proto = flow->nw_proto;
 183     key->nw_tos = flow->nw_tos;
 184 }
 185
 186 void
 187 odp_flow_key_to_flow(const struct odp_flow_key *key, struct flow *flow)
 188 {
 189     flow->tun_id = key->tun_id;
 190     flow->nw_src = key->nw_src;
 191     flow->nw_dst = key->nw_dst;
 192     flow->in_port = key->in_port;
 193     if (key->dl_tci) {
 194         flow->dl_vlan = htons(vlan_tci_to_vid(key->dl_tci));
 195         flow->dl_vlan_pcp = vlan_tci_to_pcp(key->dl_tci);
 196     } else {
 197         flow->dl_vlan = htons(OFP_VLAN_NONE);
 198         flow->dl_vlan_pcp = 0;
 199     }
 200     flow->dl_type = key->dl_type;
 201     flow->tp_src = key->tp_src;
 202     flow->tp_dst = key->tp_dst;
 203     memcpy(flow->dl_src, key->dl_src, ETH_ADDR_LEN);
 204     memcpy(flow->dl_dst, key->dl_dst, ETH_ADDR_LEN);
 205     flow->nw_proto = key->nw_proto;
 206     flow->nw_tos = key->nw_tos;
 207 }