Shad Ansari | 2f7f9be | 2017-06-07 13:34:53 -0700 | [diff] [blame^] | 1 | /* |
| 2 | <:copyright-BRCM:2016:DUAL/GPL:standard |
| 3 | |
| 4 | Broadcom Proprietary and Confidential.(c) 2016 Broadcom |
| 5 | All Rights Reserved |
| 6 | |
| 7 | Unless you and Broadcom execute a separate written software license |
| 8 | agreement governing use of this software, this software is licensed |
| 9 | to you under the terms of the GNU General Public License version 2 |
| 10 | (the "GPL"), available at http://www.broadcom.com/licenses/GPLv2.php, |
| 11 | with the following added to such license: |
| 12 | |
| 13 | As a special exception, the copyright holders of this software give |
| 14 | you permission to link this software with independent modules, and |
| 15 | to copy and distribute the resulting executable under terms of your |
| 16 | choice, provided that you also meet, for each linked independent |
| 17 | module, the terms and conditions of the license of that module. |
| 18 | An independent module is a module which is not derived from this |
| 19 | software. The special exception does not apply to any modifications |
| 20 | of the software. |
| 21 | |
| 22 | Not withstanding the above, under no circumstances may you combine |
| 23 | this software in any way with any other Broadcom software provided |
| 24 | under a license other than the GPL, without Broadcom's express prior |
| 25 | written consent. |
| 26 | |
| 27 | :> |
| 28 | */ |
| 29 | |
| 30 | /* This file contains the pieces of the OAM negotiation state machine that are common to all OAM. */ |
| 31 | |
| 32 | #include "oam_common.h" |
| 33 | #include "bcmolt_utils.h" |
| 34 | #include "bcmolt_math.h" |
| 35 | #include "bcmolt_eon_private.h" |
| 36 | #include "bcmolt_user_appl_epon_oam.h" |
| 37 | #include "dpoe/dpoe.h" |
| 38 | #include "brcm/brcm.h" |
| 39 | #include "ctc/ctc.h" |
| 40 | |
| 41 | static const oam_info_add_tlv add_org_spec_tlv[EON_OAM_SET_ID_COUNT] = |
| 42 | { |
| 43 | [EON_OAM_SET_ID_DPOE] = dpoe_tx_add_tlv, |
| 44 | [EON_OAM_SET_ID_BRCM] = brcm_tx_add_tlv, |
| 45 | [EON_OAM_SET_ID_CTC] = ctc_tx_add_tlv |
| 46 | }; |
| 47 | |
| 48 | static const oam_rx_org_spec_tlv rx_org_spec_tlv[EON_OAM_SET_ID_COUNT] = |
| 49 | { |
| 50 | [EON_OAM_SET_ID_DPOE] = dpoe_rx_tlv, |
| 51 | [EON_OAM_SET_ID_BRCM] = brcm_rx_tlv, |
| 52 | [EON_OAM_SET_ID_CTC] = ctc_rx_tlv |
| 53 | }; |
| 54 | |
| 55 | static uint8_t get_oam_version(void) |
| 56 | { |
| 57 | return 0x01; /* only version currently supported */ |
| 58 | } |
| 59 | |
| 60 | static void fill_local_tlv(const eon_link_state *link_state, bcmolt_epon_oam_local_remote_info *tlv) |
| 61 | { |
| 62 | tlv->oam_version = get_oam_version(); |
| 63 | tlv->revision = link_state->revision; |
| 64 | tlv->state = |
| 65 | BCMOLT_EPON_OAM_LOCAL_REMOTE_INFO_STATE_PARSER_ACTION1 | |
| 66 | BCMOLT_EPON_OAM_LOCAL_REMOTE_INFO_STATE_MULTIPLEXER_ACTION; |
| 67 | tlv->oam_config = |
| 68 | BCMOLT_EPON_OAM_LOCAL_REMOTE_INFO_CONFIG_OAM_MODE | |
| 69 | BCMOLT_EPON_OAM_LOCAL_REMOTE_INFO_CONFIG_UNIDIRECTIONAL_SUPPORT | |
| 70 | BCMOLT_EPON_OAM_LOCAL_REMOTE_INFO_CONFIG_LINK_EVENTS; |
| 71 | tlv->max_pdu_size = link_state->max_pdu_size; |
| 72 | tlv->oui = BCMOLT_EPON_OAM_WELL_KNOWN_OUI_TEK; |
| 73 | tlv->vendor_specific_information[0] = 0x06; |
| 74 | tlv->vendor_specific_information[1] = 0x86; |
| 75 | tlv->vendor_specific_information[2] = 0x20; |
| 76 | tlv->vendor_specific_information[3] = 0xA0; |
| 77 | } |
| 78 | |
| 79 | static void dump_std_info_tlv(const eon_link_key *link_key, const char *type, bcmolt_epon_oam_local_remote_info *info) |
| 80 | { |
| 81 | EON_LINK_LOG( |
| 82 | DEBUG, |
| 83 | link_key, |
| 84 | "%s: ver %02x rev %04x state %02x cfg %02x pdu %5u oui %06x vendor %02x%02x%02x%02x\n", |
| 85 | type, |
| 86 | info->oam_version, |
| 87 | info->revision, |
| 88 | info->state, |
| 89 | info->oam_config, |
| 90 | info->max_pdu_size, |
| 91 | info->oui, |
| 92 | info->vendor_specific_information[0], |
| 93 | info->vendor_specific_information[1], |
| 94 | info->vendor_specific_information[2], |
| 95 | info->vendor_specific_information[3]); |
| 96 | } |
| 97 | |
| 98 | static void dump_org_spec_tlv(const eon_link_key *link_key, bcmolt_epon_oam_organization_specific_info *org_spec) |
| 99 | { |
| 100 | switch (org_spec->oui) |
| 101 | { |
| 102 | case BCMOLT_EPON_OAM_WELL_KNOWN_OUI_TEK: |
| 103 | if (BCMOLT_EPON_OAM_TEK_INFO_TLV_TYPE_EXTENSION_SUPPORT == org_spec->u.tek.tlvs.type) |
| 104 | { |
| 105 | EON_LINK_LOG( |
| 106 | DEBUG, link_key, "BRCM Ext Support: ver %02x rpt %02x pref %02x\n", |
| 107 | org_spec->u.tek.tlvs.u.extension_support.version, |
| 108 | org_spec->u.tek.tlvs.u.extension_support.report_mode, |
| 109 | org_spec->u.tek.tlvs.u.extension_support.preferred_report_mode); |
| 110 | } |
| 111 | break; |
| 112 | case BCMOLT_EPON_OAM_WELL_KNOWN_OUI_DPOE: |
| 113 | if (BCMOLT_EPON_OAM_DPOE_INFO_TLV_TYPE_DPOE_OAM_SUPPORT == org_spec->u.dpoe.dpoe_info_tlv.type) |
| 114 | { |
| 115 | EON_LINK_LOG( |
| 116 | DEBUG, link_key, "DPoE Support: ver %02x\n", |
| 117 | org_spec->u.dpoe.dpoe_info_tlv.u.dpoe_oam_support.dpoe_oam_version); |
| 118 | } |
| 119 | break; |
| 120 | case BCMOLT_EPON_OAM_WELL_KNOWN_OUI_CTC: |
| 121 | EON_LINK_LOG( |
| 122 | DEBUG, link_key, "CTC Extension Support %u, Preferred Version 0x%02x, Supports (%u):\n", |
| 123 | org_spec->u.ctc.extension_support, |
| 124 | org_spec->u.ctc.version, |
| 125 | org_spec->u.ctc.supp_version_count); |
| 126 | for (uint32_t i = 0; i < org_spec->u.ctc.supp_version_count; i++) |
| 127 | { |
| 128 | EON_LINK_LOG( |
| 129 | DEBUG, link_key, "\tOUI %06x, Version 0x%02x\n", |
| 130 | org_spec->u.ctc.supp_version[i].oui, org_spec->u.ctc.supp_version[i].version); |
| 131 | } |
| 132 | break; |
| 133 | default: |
| 134 | EON_LINK_LOG(WARNING, link_key, "No support for %06x\n", org_spec->oui); |
| 135 | break; |
| 136 | } |
| 137 | } |
| 138 | |
| 139 | static void dump_info_frame(const bcmolt_epon_oam_ethernet_frame *oam, const eon_link_state* link_state) |
| 140 | { |
| 141 | static const char* entname[] = {"ONU","OLT"}; |
| 142 | char da_buf[MAC_STR_LEN]; |
| 143 | char sa_buf[MAC_STR_LEN]; |
| 144 | bcmolt_epon_oam_oam_flags flags = oam->protocols[0].u.slow_protocol.value.u.oam.flags; |
| 145 | uint8_t is_olt = (0 == memcmp(link_state->epon_ni_mac_addr.u8, oam->sa.u8, BCMOS_ETH_ALEN)); |
| 146 | uint8_t olt_stab = 0 != |
| 147 | (flags & (is_olt ? BCMOLT_EPON_OAM_OAM_FLAGS_LOCAL_STABLE : BCMOLT_EPON_OAM_OAM_FLAGS_REMOTE_STABLE)); |
| 148 | uint8_t onu_stab = 0 != |
| 149 | (flags & (is_olt ? BCMOLT_EPON_OAM_OAM_FLAGS_REMOTE_STABLE : BCMOLT_EPON_OAM_OAM_FLAGS_LOCAL_STABLE)); |
| 150 | uint8_t olt_eval = 0 != |
| 151 | (flags & (is_olt ? BCMOLT_EPON_OAM_OAM_FLAGS_LOCAL_EVALUATING : BCMOLT_EPON_OAM_OAM_FLAGS_REMOTE_EVALUATING)); |
| 152 | uint8_t onu_eval = 0 != |
| 153 | (flags & (is_olt ? BCMOLT_EPON_OAM_OAM_FLAGS_REMOTE_EVALUATING : BCMOLT_EPON_OAM_OAM_FLAGS_LOCAL_EVALUATING)); |
| 154 | |
| 155 | EON_LINK_LOG( |
| 156 | DEBUG, &link_state->link_key, "from %s: OLT %s ONU %s\n", entname[is_olt], |
| 157 | olt_stab ? "stab" : (olt_eval ? "eval" : "NONE"), |
| 158 | onu_stab ? "stab" : (onu_eval ? "eval" : "NONE")); |
| 159 | |
| 160 | EON_LINK_LOG(DEBUG, &link_state->link_key, " da sa eth su flgs cd\n"); |
| 161 | EON_LINK_LOG( |
| 162 | DEBUG, &link_state->link_key, "%s %s %04x %02x %04x %02x\n", |
| 163 | bcmos_mac_2_str(&oam->da, da_buf), bcmos_mac_2_str(&oam->sa, sa_buf), |
| 164 | oam->protocols[0].ethertype, oam->protocols[0].u.slow_protocol.value.subtype, |
| 165 | oam->protocols[0].u.slow_protocol.value.u.oam.flags, |
| 166 | oam->protocols[0].u.slow_protocol.value.u.oam.content.code); |
| 167 | EON_LINK_LOG( |
| 168 | DEBUG, &link_state->link_key, "TLVS: (%u)\n", |
| 169 | oam->protocols[0].u.slow_protocol.value.u.oam.content.u.info.tlvs_count); |
| 170 | for (uint8_t i = 0; i < oam->protocols[0].u.slow_protocol.value.u.oam.content.u.info.tlvs_count; i++) |
| 171 | { |
| 172 | switch (oam->protocols[0].u.slow_protocol.value.u.oam.content.u.info.tlvs[i].type) |
| 173 | { |
| 174 | case BCMOLT_EPON_OAM_INFO_TLV_TYPE_LOCAL: |
| 175 | dump_std_info_tlv( |
| 176 | &link_state->link_key, |
| 177 | "LOCAL", |
| 178 | &oam->protocols[0].u.slow_protocol.value.u.oam.content.u.info.tlvs[i].u.local.info); |
| 179 | break; |
| 180 | case BCMOLT_EPON_OAM_INFO_TLV_TYPE_REMOTE: |
| 181 | dump_std_info_tlv( |
| 182 | &link_state->link_key, |
| 183 | "REMOTE", |
| 184 | &oam->protocols[0].u.slow_protocol.value.u.oam.content.u.info.tlvs[i].u.remote.info); |
| 185 | break; |
| 186 | case BCMOLT_EPON_OAM_INFO_TLV_TYPE_ORGANIZATION_SPECIFIC: |
| 187 | dump_org_spec_tlv( |
| 188 | &link_state->link_key, |
| 189 | &oam->protocols[0].u.slow_protocol.value.u.oam.content.u.info.tlvs[i].u.organization_specific.value); |
| 190 | break; |
| 191 | default: |
| 192 | break; |
| 193 | } |
| 194 | } |
| 195 | } |
| 196 | |
| 197 | bcmos_errno build_tx_info_frame(eon_link_state *link_state, eon_frame_data *frame_data) |
| 198 | { |
| 199 | bcmos_bool have_remote_info = link_state->remote_info.oam_version == get_oam_version(); |
| 200 | bcmolt_epon_oam_ethernet_frame oam_frame = {}; |
| 201 | bcmolt_epon_oam_ethernet_protocol protocol = {}; |
| 202 | bcmolt_epon_oam_info_tlv_base tlvs[4] = {}; |
| 203 | |
| 204 | EON_LINK_LOG(DEBUG, &link_state->link_key, "BUILDING INFO FRAME, current state %04x\n", link_state->oam_state); |
| 205 | |
| 206 | oam_frame.da = slow_protocol_multicast_mac; |
| 207 | oam_frame.sa = link_state->epon_ni_mac_addr; |
| 208 | oam_frame.protocols_count = 1; |
| 209 | oam_frame.protocols = &protocol; |
| 210 | protocol.ethertype = BCMOLT_EPON_OAM_PROTOCOL_TYPE_SLOW_PROTOCOL; |
| 211 | protocol.u.slow_protocol.value.subtype = BCMOLT_EPON_OAM_SLOW_PROTOCOL_SUBTYPE_OAM; |
| 212 | protocol.u.slow_protocol.value.u.oam.flags = link_state->oam_state; |
| 213 | protocol.u.slow_protocol.value.u.oam.content.code = BCMOLT_EPON_OAM_OAM_OPCODE_INFO; |
| 214 | protocol.u.slow_protocol.value.u.oam.content.u.info.tlvs_count = 1; |
| 215 | protocol.u.slow_protocol.value.u.oam.content.u.info.tlvs = tlvs; |
| 216 | tlvs[0].type = BCMOLT_EPON_OAM_INFO_TLV_TYPE_LOCAL; |
| 217 | fill_local_tlv(link_state, &tlvs[0].u.local.info); |
| 218 | if (have_remote_info) |
| 219 | { |
| 220 | tlvs[1].type = BCMOLT_EPON_OAM_INFO_TLV_TYPE_REMOTE; |
| 221 | tlvs[1].u.remote.info = link_state->remote_info; |
| 222 | protocol.u.slow_protocol.value.u.oam.content.u.info.tlvs_count++; |
| 223 | } |
| 224 | add_org_spec_tlv[link_state->oam_set](link_state, &protocol.u.slow_protocol.value.u.oam.content); |
| 225 | tlvs[protocol.u.slow_protocol.value.u.oam.content.u.info.tlvs_count].type = BCMOLT_EPON_OAM_INFO_TLV_TYPE_END; |
| 226 | protocol.u.slow_protocol.value.u.oam.content.u.info.tlvs_count++; |
| 227 | |
| 228 | dump_info_frame(&oam_frame, link_state); |
| 229 | |
| 230 | return epon_oam_pack_frame(&oam_frame, &frame_data->payload, &frame_data->length); |
| 231 | } |
| 232 | |
| 233 | /* OK = done |
| 234 | in_progress = send next frame |
| 235 | parse = ignore |
| 236 | other = stop |
| 237 | */ |
| 238 | bcmos_errno handle_rx_info_frame(eon_link_state *link_state, uint16_t rx_length, uint8_t *rx_payload) |
| 239 | { |
| 240 | bcmos_errno rc = BCM_ERR_IN_PROGRESS; |
| 241 | bcmolt_epon_oam_oam_flags start_state; |
| 242 | bcmolt_epon_oam_ethernet_frame *frame; |
| 243 | bcmolt_epon_oam_slow_protocol *sp; |
| 244 | bcmolt_epon_oam_organization_specific_info *org_spec = NULL; |
| 245 | |
| 246 | start_state = link_state->oam_state; |
| 247 | EON_LINK_LOG(DEBUG, &link_state->link_key, "RECEIVED INFO FRAME, current state %04x\n", start_state); |
| 248 | |
| 249 | frame = epon_oam_unpack(link_state->link_key.device_id, rx_length, rx_payload); |
| 250 | |
| 251 | if ((frame->protocols_count == 0) || |
| 252 | (frame->protocols[0].ethertype != BCMOLT_EPON_OAM_PROTOCOL_TYPE_SLOW_PROTOCOL) || |
| 253 | (frame->protocols[0].u.slow_protocol.value.subtype != BCMOLT_EPON_OAM_SLOW_PROTOCOL_SUBTYPE_OAM) || |
| 254 | (frame->protocols[0].u.slow_protocol.value.u.oam.content.code != BCMOLT_EPON_OAM_OAM_OPCODE_INFO)) |
| 255 | { |
| 256 | /* not an info frame, ignore */ |
| 257 | bcmos_free(frame); |
| 258 | return BCM_ERR_PARSE; |
| 259 | } |
| 260 | |
| 261 | dump_info_frame(frame, link_state); |
| 262 | sp = &frame->protocols[0].u.slow_protocol.value; |
| 263 | |
| 264 | /* capture link's TLV for subsequent retransmission */ |
| 265 | if ((sp->u.oam.content.u.info.tlvs_count > 0) && |
| 266 | (sp->u.oam.content.u.info.tlvs[0].type == BCMOLT_EPON_OAM_INFO_TLV_TYPE_LOCAL)) |
| 267 | { |
| 268 | link_state->remote_info = sp->u.oam.content.u.info.tlvs[0].u.local.info; |
| 269 | } |
| 270 | else |
| 271 | { |
| 272 | bcmos_free(frame); |
| 273 | return BCM_ERR_ONU_ERR_RESP; /* no local info */ |
| 274 | } |
| 275 | |
| 276 | if (0 != memcmp(frame->da.u8, slow_protocol_multicast_mac.u8, sizeof(slow_protocol_multicast_mac))) |
| 277 | { |
| 278 | rc = BCM_ERR_ONU_ERR_RESP; |
| 279 | EON_LINK_LOG(WARNING, &link_state->link_key, |
| 280 | "DA mismatch "BCMOS_MACADDR_FMT_STR" expected vs. "BCMOS_MACADDR_FMT_STR" actual\n", |
| 281 | BCMOS_MACADDR_PARAMS(&slow_protocol_multicast_mac), BCMOS_MACADDR_PARAMS(&frame->da)); |
| 282 | } |
| 283 | |
| 284 | if (0 != memcmp(frame->sa.u8, &link_state->link_key.link.mac_address, sizeof(frame->sa))) |
| 285 | { |
| 286 | rc = BCM_ERR_ONU_ERR_RESP; |
| 287 | EON_LINK_LOG(WARNING, &link_state->link_key, |
| 288 | "SA mismatch "BCMOS_MACADDR_FMT_STR" expected vs. "BCMOS_MACADDR_FMT_STR" actual\n", |
| 289 | BCMOS_MACADDR_PARAMS(&link_state->link_key.link.mac_address), BCMOS_MACADDR_PARAMS(&frame->sa)); |
| 290 | } |
| 291 | |
| 292 | if (sp->u.oam.content.u.info.tlvs[0].u.local.info.oam_version != get_oam_version()) |
| 293 | { |
| 294 | rc = BCM_ERR_ONU_ERR_RESP; |
| 295 | EON_LINK_LOG(WARNING, &link_state->link_key, "oam version mismatch 0x%02x expected vs. 0x%02x actual\n", |
| 296 | get_oam_version(), sp->u.oam.content.u.info.tlvs[0].u.local.info.oam_version); |
| 297 | } |
| 298 | |
| 299 | /* Is the far end echoing the TLV we sent? */ |
| 300 | if ((sp->u.oam.content.u.info.tlvs_count > 1) && |
| 301 | (sp->u.oam.content.u.info.tlvs[1].type == BCMOLT_EPON_OAM_INFO_TLV_TYPE_REMOTE)) |
| 302 | { |
| 303 | if (sp->u.oam.content.u.info.tlvs[0].u.local.info.max_pdu_size != |
| 304 | sp->u.oam.content.u.info.tlvs[1].u.remote.info.max_pdu_size) |
| 305 | { |
| 306 | link_state->max_pdu_size = MIN( |
| 307 | sp->u.oam.content.u.info.tlvs[0].u.local.info.max_pdu_size, |
| 308 | sp->u.oam.content.u.info.tlvs[1].u.remote.info.max_pdu_size); |
| 309 | link_state->revision++; |
| 310 | } |
| 311 | else |
| 312 | { |
| 313 | bcmolt_epon_oam_local_remote_info loc_tlv = {}; |
| 314 | fill_local_tlv(link_state, &loc_tlv); |
| 315 | if (0 == memcmp(&loc_tlv, &sp->u.oam.content.u.info.tlvs[1].u.remote.info, sizeof(loc_tlv))) |
| 316 | { |
| 317 | link_state->oam_state = (link_state->oam_state | BCMOLT_EPON_OAM_OAM_FLAGS_LOCAL_STABLE) & |
| 318 | (~BCMOLT_EPON_OAM_OAM_FLAGS_LOCAL_EVALUATING); |
| 319 | EON_LINK_LOG(DEBUG, &link_state->link_key, "setting LOCAL STABLE flag\n"); |
| 320 | } |
| 321 | else |
| 322 | { |
| 323 | EON_LINK_LOG(WARNING, &link_state->link_key, "Remote TLV from ONU does NOT match what we sent\n"); |
| 324 | } |
| 325 | } |
| 326 | } |
| 327 | |
| 328 | if (sp->u.oam.flags & BCMOLT_EPON_OAM_OAM_FLAGS_LOCAL_EVALUATING) |
| 329 | { |
| 330 | link_state->oam_state = (link_state->oam_state | BCMOLT_EPON_OAM_OAM_FLAGS_REMOTE_EVALUATING) & |
| 331 | (~BCMOLT_EPON_OAM_OAM_FLAGS_REMOTE_STABLE); |
| 332 | EON_LINK_LOG(DEBUG, &link_state->link_key, "setting REMOTE EVAL flag\n"); |
| 333 | } |
| 334 | |
| 335 | if (sp->u.oam.flags & BCMOLT_EPON_OAM_OAM_FLAGS_LOCAL_STABLE) |
| 336 | { |
| 337 | link_state->oam_state = (link_state->oam_state | BCMOLT_EPON_OAM_OAM_FLAGS_REMOTE_STABLE) & |
| 338 | (~BCMOLT_EPON_OAM_OAM_FLAGS_REMOTE_EVALUATING); |
| 339 | EON_LINK_LOG(DEBUG, &link_state->link_key, "setting REMOTE STABLE flag\n"); |
| 340 | } |
| 341 | |
| 342 | if (LOCAL_STABLE_REMOTE_STABLE == link_state->oam_state) |
| 343 | { |
| 344 | rc = BCM_ERR_OK; /* basic negotiation complete */ |
| 345 | } |
| 346 | |
| 347 | if ((sp->u.oam.content.u.info.tlvs_count > 2) && |
| 348 | (sp->u.oam.content.u.info.tlvs[2].type == BCMOLT_EPON_OAM_INFO_TLV_TYPE_ORGANIZATION_SPECIFIC)) |
| 349 | { |
| 350 | org_spec = &sp->u.oam.content.u.info.tlvs[2].u.organization_specific.value; |
| 351 | } |
| 352 | rx_org_spec_tlv[link_state->oam_set](link_state, org_spec, &rc); |
| 353 | |
| 354 | EON_LINK_LOG(DEBUG, &link_state->link_key, "state %04x -> %04x (%s)\n", |
| 355 | start_state, link_state->oam_state, bcmos_strerror(rc)); |
| 356 | |
| 357 | bcmos_free(frame); |
| 358 | |
| 359 | return rc; |
| 360 | } |
| 361 | |