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         int vid = vlan_tci_to_vid(a->dl_tci.tci);
  76         int pcp = vlan_tci_to_pcp(a->dl_tci.tci);
  77
  78         switch (ntohs(a->dl_tci.mask)) {
  79         case VLAN_VID_MASK:
  80             ds_put_format(ds, "set_tci(vlan=%d)", vid);
  81             break;
  82         case VLAN_PCP_MASK:
  83             ds_put_format(ds, "set_tci(pcp=%d)", pcp);
  84             break;
  85         case VLAN_VID_MASK | VLAN_PCP_MASK:
  86             ds_put_format(ds, "set_tci(vlan=%d,pcp=%d)", vid, pcp);
  87             break;
  88         default:
  89             ds_put_format(ds, "set_tci(tci=%04"PRIx16",mask=%04"PRIx16")",
  90                           ntohs(a->dl_tci.tci), ntohs(a->dl_tci.mask));
  91             break;
  92         }
  93     }
  94         break;
  95     case ODPAT_STRIP_VLAN:
  96         ds_put_format(ds, "strip_vlan");
  97         break;
  98     case ODPAT_SET_DL_SRC:
  99         ds_put_format(ds, "set_dl_src("ETH_ADDR_FMT")",
 100                ETH_ADDR_ARGS(a->dl_addr.dl_addr));
 101         break;
 102     case ODPAT_SET_DL_DST:
 103         ds_put_format(ds, "set_dl_dst("ETH_ADDR_FMT")",
 104                ETH_ADDR_ARGS(a->dl_addr.dl_addr));
 105         break;
 106     case ODPAT_SET_NW_SRC:
 107         ds_put_format(ds, "set_nw_src("IP_FMT")",
 108                       IP_ARGS(&a->nw_addr.nw_addr));
 109         break;
 110     case ODPAT_SET_NW_DST:
 111         ds_put_format(ds, "set_nw_dst("IP_FMT")",
 112                       IP_ARGS(&a->nw_addr.nw_addr));
 113         break;
 114     case ODPAT_SET_NW_TOS:
 115         ds_put_format(ds, "set_nw_tos(%"PRIu8")", a->nw_tos.nw_tos);
 116         break;
 117     case ODPAT_SET_TP_SRC:
 118         ds_put_format(ds, "set_tp_src(%"PRIu16")", ntohs(a->tp_port.tp_port));
 119         break;
 120     case ODPAT_SET_TP_DST:
 121         ds_put_format(ds, "set_tp_dst(%"PRIu16")", ntohs(a->tp_port.tp_port));
 122         break;
 123     case ODPAT_SET_PRIORITY:
 124         ds_put_format(ds, "set_priority(0x%"PRIx32")", a->priority.priority);
 125         break;
 126     case ODPAT_POP_PRIORITY:
 127         ds_put_cstr(ds, "pop_priority");
 128         break;
 129     case ODPAT_DROP_SPOOFED_ARP:
 130         ds_put_cstr(ds, "drop_spoofed_arp");
 131         break;
 132     default:
 133         ds_put_format(ds, "***bad action 0x%"PRIx16"***", a->type);
 134         break;
 135     }
 136 }
 137
 138 void
 139 format_odp_actions(struct ds *ds, const union odp_action *actions,
 140                    size_t n_actions)
 141 {
 142     size_t i;
 143     for (i = 0; i < n_actions; i++) {
 144         if (i) {
 145             ds_put_char(ds, ',');
 146         }
 147         format_odp_action(ds, &actions[i]);
 148     }
 149     if (!n_actions) {
 150         ds_put_cstr(ds, "drop");
 151     }
 152 }
 153
 154 void
 155 format_odp_flow_stats(struct ds *ds, const struct odp_flow_stats *s)
 156 {
 157     ds_put_format(ds, "packets:%llu, bytes:%llu, used:",
 158                   (unsigned long long int) s->n_packets,
 159                   (unsigned long long int) s->n_bytes);
 160     if (s->used_sec) {
 161         long long int used = s->used_sec * 1000 + s->used_nsec / 1000000;
 162         ds_put_format(ds, "%.3fs", (time_msec() - used) / 1000.0);
 163     } else {
 164         ds_put_format(ds, "never");
 165     }
 166 }
 167
 168 void
 169 format_odp_flow(struct ds *ds, const struct odp_flow *f)
 170 {
 171     format_odp_flow_key(ds, &f->key);
 172     ds_put_cstr(ds, ", ");
 173     format_odp_flow_stats(ds, &f->stats);
 174     ds_put_cstr(ds, ", actions:");
 175     format_odp_actions(ds, f->actions, f->n_actions);
 176 }
 177 \f
 178 void
 179 odp_flow_key_from_flow(struct odp_flow_key *key, const struct flow *flow)
 180 {
 181     key->tun_id = flow->tun_id;
 182     key->nw_src = flow->nw_src;
 183     key->nw_dst = flow->nw_dst;
 184     key->in_port = flow->in_port;
 185     if (flow->dl_vlan == htons(OFP_VLAN_NONE)) {
 186         key->dl_tci = htons(0);
 187     } else {
 188         uint16_t vid = flow->dl_vlan & htons(VLAN_VID_MASK);
 189         uint16_t pcp = htons((flow->dl_vlan_pcp << VLAN_PCP_SHIFT)
 190                              & VLAN_PCP_MASK);
 191         key->dl_tci = vid | pcp | htons(ODP_TCI_PRESENT);
 192     }
 193     key->dl_type = flow->dl_type;
 194     key->tp_src = flow->tp_src;
 195     key->tp_dst = flow->tp_dst;
 196     memcpy(key->dl_src, flow->dl_src, ETH_ADDR_LEN);
 197     memcpy(key->dl_dst, flow->dl_dst, ETH_ADDR_LEN);
 198     key->nw_proto = flow->nw_proto;
 199     key->nw_tos = flow->nw_tos;
 200 }
 201
 202 void
 203 odp_flow_key_to_flow(const struct odp_flow_key *key, struct flow *flow)
 204 {
 205     flow->tun_id = key->tun_id;
 206     flow->nw_src = key->nw_src;
 207     flow->nw_dst = key->nw_dst;
 208     flow->in_port = key->in_port;
 209     if (key->dl_tci) {
 210         flow->dl_vlan = htons(vlan_tci_to_vid(key->dl_tci));
 211         flow->dl_vlan_pcp = vlan_tci_to_pcp(key->dl_tci);
 212     } else {
 213         flow->dl_vlan = htons(OFP_VLAN_NONE);
 214         flow->dl_vlan_pcp = 0;
 215     }
 216     flow->dl_type = key->dl_type;
 217     flow->tp_src = key->tp_src;
 218     flow->tp_dst = key->tp_dst;
 219     memcpy(flow->dl_src, key->dl_src, ETH_ADDR_LEN);
 220     memcpy(flow->dl_dst, key->dl_dst, ETH_ADDR_LEN);
 221     flow->nw_proto = key->nw_proto;
 222     flow->nw_tos = key->nw_tos;
 223 }