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 specific to CTC OAM. */ |
| 31 | |
| 32 | #include "bcmolt_eon_private.h" |
| 33 | #include "../oam_common.h" |
| 34 | #include "ctc.h" |
| 35 | |
| 36 | #define CTC_EXTENSION_SUPPORT 0x1 |
| 37 | #define CTC_PREFERRED_VERSION 0x30 |
| 38 | |
| 39 | typedef enum |
| 40 | { |
| 41 | CTC_NEG_ADVERTISING, |
| 42 | CTC_NEG_CONFIRMING, |
| 43 | CTC_NEG_DONE |
| 44 | } ctc_neg_state; |
| 45 | |
| 46 | typedef struct |
| 47 | { |
| 48 | ctc_neg_state state; |
| 49 | uint8_t selected_version; |
| 50 | } ctc_state; |
| 51 | |
| 52 | static bcmolt_epon_oam_ctc_oui_version_pair ctc_advertised_versions[] = |
| 53 | { |
| 54 | { .oui = BCMOLT_EPON_OAM_WELL_KNOWN_OUI_CTC, .version = 0x30 }, |
| 55 | { .oui = BCMOLT_EPON_OAM_WELL_KNOWN_OUI_CTC, .version = 0x21 }, |
| 56 | { .oui = BCMOLT_EPON_OAM_WELL_KNOWN_OUI_CTC, .version = 0x20 }, |
| 57 | { .oui = BCMOLT_EPON_OAM_WELL_KNOWN_OUI_CTC, .version = 0x13 }, |
| 58 | { .oui = BCMOLT_EPON_OAM_WELL_KNOWN_OUI_CTC, .version = 0x01 } |
| 59 | }; |
| 60 | |
| 61 | /* Org specific TLV to send to the ONU */ |
| 62 | static const bcmolt_epon_oam_organization_specific_info ctc_tx_advertise_tlv = |
| 63 | { |
| 64 | .oui = BCMOLT_EPON_OAM_WELL_KNOWN_OUI_CTC, |
| 65 | .u = |
| 66 | { |
| 67 | .ctc = |
| 68 | { |
| 69 | .extension_support = CTC_EXTENSION_SUPPORT, |
| 70 | .version = CTC_PREFERRED_VERSION, |
| 71 | .supp_version_count = NUM_ELEM(ctc_advertised_versions), |
| 72 | .supp_version = ctc_advertised_versions |
| 73 | } |
| 74 | } |
| 75 | }; |
| 76 | |
| 77 | void ctc_tx_add_tlv(eon_link_state *link_state, bcmolt_epon_oam_oam_pdu_content *oam) |
| 78 | { |
| 79 | ctc_state *ctc = link_state->org_spec_state; |
| 80 | |
| 81 | if (ctc != NULL) |
| 82 | { |
| 83 | switch (ctc->state) |
| 84 | { |
| 85 | case CTC_NEG_ADVERTISING: |
| 86 | oam->u.info.tlvs[oam->u.info.tlvs_count].type = BCMOLT_EPON_OAM_INFO_TLV_TYPE_ORGANIZATION_SPECIFIC; |
| 87 | oam->u.info.tlvs[oam->u.info.tlvs_count].u.organization_specific.value = ctc_tx_advertise_tlv; |
| 88 | oam->u.info.tlvs_count++; |
| 89 | break; |
| 90 | case CTC_NEG_CONFIRMING: |
| 91 | oam->u.info.tlvs[oam->u.info.tlvs_count].type = BCMOLT_EPON_OAM_INFO_TLV_TYPE_ORGANIZATION_SPECIFIC; |
| 92 | oam->u.info.tlvs[oam->u.info.tlvs_count].u.organization_specific.value.oui = |
| 93 | BCMOLT_EPON_OAM_WELL_KNOWN_OUI_CTC; |
| 94 | oam->u.info.tlvs[oam->u.info.tlvs_count].u.organization_specific.value.u.ctc.extension_support = |
| 95 | CTC_EXTENSION_SUPPORT; |
| 96 | oam->u.info.tlvs[oam->u.info.tlvs_count].u.organization_specific.value.u.ctc.version = |
| 97 | ctc->selected_version; |
| 98 | oam->u.info.tlvs[oam->u.info.tlvs_count].u.organization_specific.value.u.ctc.supp_version_count = 0; |
| 99 | oam->u.info.tlvs[oam->u.info.tlvs_count].u.organization_specific.value.u.ctc.supp_version = NULL; |
| 100 | oam->u.info.tlvs_count++; |
| 101 | break; |
| 102 | case CTC_NEG_DONE: |
| 103 | break; /* don't add a TLV */ |
| 104 | default: |
| 105 | EON_LINK_LOG(ERROR, &link_state->link_key, "Unknown CTC state %d\n", ctc->state); |
| 106 | break; |
| 107 | } |
| 108 | } |
| 109 | } |
| 110 | |
| 111 | void ctc_rx_tlv( |
| 112 | eon_link_state *link_state, |
| 113 | bcmolt_epon_oam_organization_specific_info *org_spec, |
| 114 | bcmos_errno *rc) |
| 115 | { |
| 116 | *rc = BCM_ERR_IN_PROGRESS; |
| 117 | |
| 118 | if (link_state->org_spec_state != NULL) |
| 119 | { |
| 120 | ctc_state *ctc = link_state->org_spec_state; |
| 121 | |
| 122 | switch (ctc->state) |
| 123 | { |
| 124 | case CTC_NEG_ADVERTISING: |
| 125 | if ((NULL == org_spec) || (BCMOLT_EPON_OAM_WELL_KNOWN_OUI_CTC != org_spec->oui)) |
| 126 | { |
| 127 | EON_LINK_LOG(INFO, &link_state->link_key, "Didn't get CTC advertise TLV\n"); |
| 128 | *rc = BCM_ERR_ONU_ERR_RESP; |
| 129 | } |
| 130 | else |
| 131 | { |
| 132 | /* find highest common version */ |
| 133 | ctc->selected_version = 0; |
| 134 | for (uint8_t i = 0; i < org_spec->u.ctc.supp_version_count; i++) |
| 135 | { |
| 136 | for (uint8_t j = 0; j < NUM_ELEM(ctc_advertised_versions); j++) |
| 137 | { |
| 138 | if ((org_spec->u.ctc.supp_version[i].oui == ctc_advertised_versions[j].oui) && |
| 139 | (org_spec->u.ctc.supp_version[i].version == ctc_advertised_versions[j].version)) |
| 140 | { |
| 141 | if (ctc_advertised_versions[j].version > ctc->selected_version) |
| 142 | { |
| 143 | ctc->selected_version = ctc_advertised_versions[j].version; |
| 144 | } |
| 145 | } |
| 146 | } |
| 147 | } |
| 148 | if (ctc->selected_version == 0) |
| 149 | { |
| 150 | *rc = BCM_ERR_NOT_SUPPORTED; /* no common version found */ |
| 151 | } |
| 152 | else |
| 153 | { |
| 154 | ctc->state = CTC_NEG_CONFIRMING; |
| 155 | } |
| 156 | } |
| 157 | break; |
| 158 | case CTC_NEG_CONFIRMING: |
| 159 | if ((NULL == org_spec) || (BCMOLT_EPON_OAM_WELL_KNOWN_OUI_CTC != org_spec->oui)) |
| 160 | { |
| 161 | EON_LINK_LOG(INFO, &link_state->link_key, "Didn't get CTC confirm TLV\n"); |
| 162 | *rc = BCM_ERR_ONU_ERR_RESP; |
| 163 | } |
| 164 | else |
| 165 | { |
| 166 | if (org_spec->u.ctc.supp_version_count == 0) |
| 167 | { |
| 168 | if (org_spec->u.ctc.version != ctc->selected_version) |
| 169 | { |
| 170 | *rc = BCM_ERR_NOT_SUPPORTED; |
| 171 | } |
| 172 | else |
| 173 | { |
| 174 | ctc->state = CTC_NEG_DONE; |
| 175 | } |
| 176 | } |
| 177 | } |
| 178 | break; |
| 179 | case CTC_NEG_DONE: |
| 180 | if ((NULL != org_spec) && (org_spec->oui == BCMOLT_EPON_OAM_WELL_KNOWN_OUI_CTC)) |
| 181 | { |
| 182 | EON_LINK_LOG( |
| 183 | INFO, &link_state->link_key, "Got unexpected CTC TLV after negotiation\n"); |
| 184 | *rc = BCM_ERR_ONU_ERR_RESP; |
| 185 | } |
| 186 | else |
| 187 | { |
| 188 | *rc = BCM_ERR_OK; |
| 189 | } |
| 190 | break; |
| 191 | default: |
| 192 | break; |
| 193 | } |
| 194 | } |
| 195 | else |
| 196 | { |
| 197 | if ((NULL != org_spec) && (org_spec->oui == BCMOLT_EPON_OAM_WELL_KNOWN_OUI_CTC)) |
| 198 | { |
| 199 | EON_LINK_LOG( |
| 200 | INFO, &link_state->link_key, "Got unexpected CTC TLV before negotiation\n"); |
| 201 | *rc = BCM_ERR_ONU_ERR_RESP; |
| 202 | } |
| 203 | |
| 204 | if (LOCAL_STABLE_REMOTE_STABLE == link_state->oam_state) |
| 205 | { |
| 206 | ctc_state *ctc = bcmos_calloc(sizeof(ctc_state)); |
| 207 | ctc->state = CTC_NEG_ADVERTISING; |
| 208 | link_state->org_spec_state = ctc; |
| 209 | } |
| 210 | } |
| 211 | } |
| 212 | |