lib/mlag.c

   1 /* mlag generic code.
   2  * Copyright (C) 2018 Cumulus Networks, Inc.
   3  *                    Donald Sharp
   4  *
   5  * This file is part of FRR.
   6  *
   7  * FRR is free software; you can redistribute it and/or modify it
   8  * under the terms of the GNU General Public License as published by the
   9  * Free Software Foundation; either version 2, or (at your option) any
  10  * later version.
  11  *
  12  * FRR is distributed in the hope that it will be useful, but
  13  * WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License
  18  * along with FRR; see the file COPYING.  If not, write to the Free
  19  * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
  20  * 02111-1307, USA.
  21  */
  22 #include <zebra.h>
  23
  24 #include <mlag.h>
  25
  26 char *mlag_role2str(enum mlag_role role, char *buf, size_t size)
  27 {
  28         switch (role) {
  29         case MLAG_ROLE_NONE:
  30                 snprintf(buf, size, "NONE");
  31                 break;
  32         case MLAG_ROLE_PRIMARY:
  33                 snprintf(buf, size, "PRIMARY");
  34                 break;
  35         case MLAG_ROLE_SECONDARY:
  36                 snprintf(buf, size, "SECONDARY");
  37                 break;
  38         }
  39
  40         return buf;
  41 }
  42
  43 char *mlag_lib_msgid_to_str(enum mlag_msg_type msg_type, char *buf, size_t size)
  44 {
  45         switch (msg_type) {
  46         case MLAG_REGISTER:
  47                 snprintf(buf, size, "Register");
  48                 break;
  49         case MLAG_DEREGISTER:
  50                 snprintf(buf, size, "De-Register");
  51                 break;
  52         case MLAG_MROUTE_ADD:
  53                 snprintf(buf, size, "Mroute add");
  54                 break;
  55         case MLAG_MROUTE_DEL:
  56                 snprintf(buf, size, "Mroute del");
  57                 break;
  58         case MLAG_DUMP:
  59                 snprintf(buf, size, "Mlag Replay");
  60                 break;
  61         case MLAG_MROUTE_ADD_BULK:
  62                 snprintf(buf, size, "Mroute Add Batch");
  63                 break;
  64         case MLAG_MROUTE_DEL_BULK:
  65                 snprintf(buf, size, "Mroute Del Batch");
  66                 break;
  67         case MLAG_STATUS_UPDATE:
  68                 snprintf(buf, size, "Mlag Status");
  69                 break;
  70         case MLAG_VXLAN_UPDATE:
  71                 snprintf(buf, size, "Mlag vxlan update");
  72                 break;
  73         case MLAG_PEER_FRR_STATUS:
  74                 snprintf(buf, size, "Mlag Peer FRR Status");
  75                 break;
  76         default:
  77                 snprintf(buf, size, "Unknown %d", msg_type);
  78                 break;
  79         }
  80         return buf;
  81 }
  82
  83
  84 int mlag_lib_decode_mlag_hdr(struct stream *s, struct mlag_msg *msg,
  85                              size_t *length)
  86 {
  87 #define LIB_MLAG_HDR_LENGTH 8
  88         if (s == NULL || msg == NULL)
  89                 return -1;
  90
  91         *length = stream_get_endp(s);
  92
  93         if (*length < LIB_MLAG_HDR_LENGTH)
  94                 return -1;
  95
  96         *length -= LIB_MLAG_HDR_LENGTH;
  97
  98         STREAM_GETL(s, msg->msg_type);
  99         STREAM_GETW(s, msg->data_len);
 100         STREAM_GETW(s, msg->msg_cnt);
 101
 102         return 0;
 103 stream_failure:
 104         return -1;
 105 }
 106
 107 #define MLAG_MROUTE_ADD_LENGTH                                                 \
 108         (VRF_NAMSIZ + INTERFACE_NAMSIZ + 4 + 4 + 4 + 4 + 1 + 1 + 4)
 109
 110 int mlag_lib_decode_mroute_add(struct stream *s, struct mlag_mroute_add *msg,
 111                                size_t *length)
 112 {
 113         if (s == NULL || msg == NULL || *length < MLAG_MROUTE_ADD_LENGTH)
 114                 return -1;
 115
 116         STREAM_GET(msg->vrf_name, s, VRF_NAMSIZ);
 117         STREAM_GETL(s, msg->source_ip);
 118         STREAM_GETL(s, msg->group_ip);
 119         STREAM_GETL(s, msg->cost_to_rp);
 120         STREAM_GETL(s, msg->owner_id);
 121         STREAM_GETC(s, msg->am_i_dr);
 122         STREAM_GETC(s, msg->am_i_dual_active);
 123         STREAM_GETL(s, msg->vrf_id);
 124         STREAM_GET(msg->intf_name, s, INTERFACE_NAMSIZ);
 125
 126         return 0;
 127 stream_failure:
 128         return -1;
 129 }
 130
 131 #define MLAG_MROUTE_DEL_LENGTH (VRF_NAMSIZ + INTERFACE_NAMSIZ + 4 + 4 + 4 + 4)
 132
 133 int mlag_lib_decode_mroute_del(struct stream *s, struct mlag_mroute_del *msg,
 134                                size_t *length)
 135 {
 136         if (s == NULL || msg == NULL || *length < MLAG_MROUTE_DEL_LENGTH)
 137                 return -1;
 138
 139         STREAM_GET(msg->vrf_name, s, VRF_NAMSIZ);
 140         STREAM_GETL(s, msg->source_ip);
 141         STREAM_GETL(s, msg->group_ip);
 142         STREAM_GETL(s, msg->owner_id);
 143         STREAM_GETL(s, msg->vrf_id);
 144         STREAM_GET(msg->intf_name, s, INTERFACE_NAMSIZ);
 145
 146         return 0;
 147 stream_failure:
 148         return -1;
 149 }
 150
 151 int mlag_lib_decode_mlag_status(struct stream *s, struct mlag_status *msg)
 152 {
 153         if (s == NULL || msg == NULL)
 154                 return -1;
 155
 156         STREAM_GET(msg->peerlink_rif, s, INTERFACE_NAMSIZ);
 157         STREAM_GETL(s, msg->my_role);
 158         STREAM_GETL(s, msg->peer_state);
 159         return 0;
 160 stream_failure:
 161         return -1;
 162 }
 163
 164 int mlag_lib_decode_vxlan_update(struct stream *s, struct mlag_vxlan *msg)
 165 {
 166         if (s == NULL || msg == NULL)
 167                 return -1;
 168
 169         STREAM_GETL(s, msg->anycast_ip);
 170         STREAM_GETL(s, msg->local_ip);
 171         return 0;
 172
 173 stream_failure:
 174         return -1;
 175 }
 176
 177 int mlag_lib_decode_frr_status(struct stream *s, struct mlag_frr_status *msg)
 178 {
 179         if (s == NULL || msg == NULL)
 180                 return -1;
 181
 182         STREAM_GETL(s, msg->frr_state);
 183         return 0;
 184 stream_failure:
 185         return -1;
 186 }