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         ds_put_cstr(ds, "set_tci(");
  79         switch (ntohs(a->dl_tci.mask)) {
  80         case VLAN_VID_MASK:
  81             ds_put_format(ds, "set_tci(vlan=%d)", vid);
  82             break;
  83         case VLAN_PCP_MASK:
  84             ds_put_format(ds, "set_tci(pcp=%d)", pcp);
  85             break;
  86         case VLAN_VID_MASK | VLAN_PCP_MASK:
  87             ds_put_format(ds, "set_tci(vlan=%d,pcp=%d)", vid, pcp);
  88             break;
  89         default:
  90             ds_put_format(ds, "set_tci(tci=%04"PRIx16",mask=%04"PRIx16")",
  91                           ntohs(a->dl_tci.tci), ntohs(a->dl_tci.mask));
  92             break;
  93         }
  94     }
  95         break;
  96     case ODPAT_STRIP_VLAN:
  97         ds_put_format(ds, "strip_vlan");
  98         break;
  99     case ODPAT_SET_DL_SRC:
 100         ds_put_format(ds, "set_dl_src("ETH_ADDR_FMT")",
 101                ETH_ADDR_ARGS(a->dl_addr.dl_addr));
 102         break;
 103     case ODPAT_SET_DL_DST:
 104         ds_put_format(ds, "set_dl_dst("ETH_ADDR_FMT")",
 105                ETH_ADDR_ARGS(a->dl_addr.dl_addr));
 106         break;
 107     case ODPAT_SET_NW_SRC:
 108         ds_put_format(ds, "set_nw_src("IP_FMT")",
 109                       IP_ARGS(&a->nw_addr.nw_addr));
 110         break;
 111     case ODPAT_SET_NW_DST:
 112         ds_put_format(ds, "set_nw_dst("IP_FMT")",
 113                       IP_ARGS(&a->nw_addr.nw_addr));
 114         break;
 115     case ODPAT_SET_NW_TOS:
 116         ds_put_format(ds, "set_nw_tos(%"PRIu8")", a->nw_tos.nw_tos);
 117         break;
 118     case ODPAT_SET_TP_SRC:
 119         ds_put_format(ds, "set_tp_src(%"PRIu16")", ntohs(a->tp_port.tp_port));
 120         break;
 121     case ODPAT_SET_TP_DST:
 122         ds_put_format(ds, "set_tp_dst(%"PRIu16")", ntohs(a->tp_port.tp_port));
 123         break;
 124     case ODPAT_SET_PRIORITY:
 125         ds_put_format(ds, "set_priority(0x%"PRIx32")", a->priority.priority);
 126         break;
 127     case ODPAT_POP_PRIORITY:
 128         ds_put_cstr(ds, "pop_priority");
 129         break;
 130     case ODPAT_DROP_SPOOFED_ARP:
 131         ds_put_cstr(ds, "drop_spoofed_arp");
 132         break;
 133     default:
 134         ds_put_format(ds, "***bad action 0x%"PRIx16"***", a->type);
 135         break;
 136     }
 137 }
 138
 139 void
 140 format_odp_actions(struct ds *ds, const union odp_action *actions,
 141                    size_t n_actions)
 142 {
 143     size_t i;
 144     for (i = 0; i < n_actions; i++) {
 145         if (i) {
 146             ds_put_char(ds, ',');
 147         }
 148         format_odp_action(ds, &actions[i]);
 149     }
 150     if (!n_actions) {
 151         ds_put_cstr(ds, "drop");
 152     }
 153 }
 154
 155 void
 156 format_odp_flow_stats(struct ds *ds, const struct odp_flow_stats *s)
 157 {
 158     ds_put_format(ds, "packets:%llu, bytes:%llu, used:",
 159                   (unsigned long long int) s->n_packets,
 160                   (unsigned long long int) s->n_bytes);
 161     if (s->used_sec) {
 162         long long int used = s->used_sec * 1000 + s->used_nsec / 1000000;
 163         ds_put_format(ds, "%.3fs", (time_msec() - used) / 1000.0);
 164     } else {
 165         ds_put_format(ds, "never");
 166     }
 167 }
 168
 169 void
 170 format_odp_flow(struct ds *ds, const struct odp_flow *f)
 171 {
 172     format_odp_flow_key(ds, &f->key);
 173     ds_put_cstr(ds, ", ");
 174     format_odp_flow_stats(ds, &f->stats);
 175     ds_put_cstr(ds, ", actions:");
 176     format_odp_actions(ds, f->actions, f->n_actions);
 177 }
 178 \f
 179 void
 180 odp_flow_key_from_flow(struct odp_flow_key *key, const struct flow *flow)
 181 {
 182     key->tun_id = flow->tun_id;
 183     key->nw_src = flow->nw_src;
 184     key->nw_dst = flow->nw_dst;
 185     key->in_port = flow->in_port;
 186     if (flow->dl_vlan == htons(OFP_VLAN_NONE)) {
 187         key->dl_tci = htons(0);
 188     } else {
 189         uint16_t vid = flow->dl_vlan & htons(VLAN_VID_MASK);
 190         uint16_t pcp = htons((flow->dl_vlan_pcp << VLAN_PCP_SHIFT)
 191                              & VLAN_PCP_MASK);
 192         key->dl_tci = vid | pcp | htons(ODP_TCI_PRESENT);
 193     }
 194     key->dl_type = flow->dl_type;
 195     key->tp_src = flow->tp_src;
 196     key->tp_dst = flow->tp_dst;
 197     memcpy(key->dl_src, flow->dl_src, ETH_ADDR_LEN);
 198     memcpy(key->dl_dst, flow->dl_dst, ETH_ADDR_LEN);
 199     key->nw_proto = flow->nw_proto;
 200     key->nw_tos = flow->nw_tos;
 201 }
 202
 203 void
 204 odp_flow_key_to_flow(const struct odp_flow_key *key, struct flow *flow)
 205 {
 206     flow->tun_id = key->tun_id;
 207     flow->nw_src = key->nw_src;
 208     flow->nw_dst = key->nw_dst;
 209     flow->in_port = key->in_port;
 210     if (key->dl_tci) {
 211         flow->dl_vlan = htons(vlan_tci_to_vid(key->dl_tci));
 212         flow->dl_vlan_pcp = vlan_tci_to_pcp(key->dl_tci);
 213     } else {
 214         flow->dl_vlan = htons(OFP_VLAN_NONE);
 215         flow->dl_vlan_pcp = 0;
 216     }
 217     flow->dl_type = key->dl_type;
 218     flow->tp_src = key->tp_src;
 219     flow->tp_dst = key->tp_dst;
 220     memcpy(flow->dl_src, key->dl_src, ETH_ADDR_LEN);
 221     memcpy(flow->dl_dst, key->dl_dst, ETH_ADDR_LEN);
 222     flow->nw_proto = key->nw_proto;
 223     flow->nw_tos = key->nw_tos;
 224 }