1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 /* 22 * Copyright 2006 Sun Microsystems, Inc. All rights reserved. 23 * Use is subject to license terms. 24 */ 25 26 #pragma ident "%Z%%M% %I% %E% SMI" 27 28 /* 29 * Ethernet MAC plugin for the Nemo mac module 30 */ 31 32 #include <sys/types.h> 33 #include <sys/modctl.h> 34 #include <sys/dlpi.h> 35 #include <sys/mac.h> 36 #include <sys/mac_ether.h> 37 #include <sys/dls.h> 38 #include <sys/ethernet.h> 39 #include <sys/byteorder.h> 40 #include <sys/strsun.h> 41 #include <inet/common.h> 42 43 static uint8_t ether_brdcst[] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff }; 44 45 static mac_stat_info_t ether_stats[] = { 46 /* RFC1643 stats */ 47 { ETHER_STAT_ALIGN_ERRORS, "align_errors", KSTAT_DATA_UINT32, 0 }, 48 { ETHER_STAT_FCS_ERRORS, "fcs_errors", KSTAT_DATA_UINT32, 0 }, 49 { ETHER_STAT_FIRST_COLLISIONS, "first_collsions", KSTAT_DATA_UINT32, 50 0 }, 51 { ETHER_STAT_MULTI_COLLISIONS, "multi_collsions", KSTAT_DATA_UINT32, 52 0 }, 53 { ETHER_STAT_SQE_ERRORS, "sqe_errors", KSTAT_DATA_UINT32, 0}, 54 { ETHER_STAT_DEFER_XMTS, "defer_xmts", KSTAT_DATA_UINT32, 0}, 55 { ETHER_STAT_TX_LATE_COLLISIONS, "tx_late_collsions", 56 KSTAT_DATA_UINT32, 0 }, 57 { ETHER_STAT_EX_COLLISIONS, "ex_collsions", KSTAT_DATA_UINT32, 0 }, 58 { ETHER_STAT_MACXMT_ERRORS, "macxmt_errors", KSTAT_DATA_UINT32, 0 }, 59 { ETHER_STAT_CARRIER_ERRORS, "carrier_errors", KSTAT_DATA_UINT32, 0 }, 60 { ETHER_STAT_TOOLONG_ERRORS, "toolong_errors", KSTAT_DATA_UINT32, 0 }, 61 { ETHER_STAT_MACRCV_ERRORS, "macrcv_errors", KSTAT_DATA_UINT32, 0 }, 62 63 /* Statistics described in the ieee802.3(5) man page */ 64 { ETHER_STAT_XCVR_ADDR, "xcvr_addr", KSTAT_DATA_UINT32, 0 }, 65 { ETHER_STAT_XCVR_ID, "xcvr_id", KSTAT_DATA_UINT32, 0 }, 66 { ETHER_STAT_XCVR_INUSE, "xcvr_inuse", KSTAT_DATA_UINT32, 0 }, 67 { ETHER_STAT_CAP_1000FDX, "cap_1000fdx", KSTAT_DATA_UINT32, 0 }, 68 { ETHER_STAT_CAP_1000HDX, "cap_1000hdx", KSTAT_DATA_UINT32, 0 }, 69 { ETHER_STAT_CAP_100FDX, "cap_100fdx", KSTAT_DATA_UINT32, 0 }, 70 { ETHER_STAT_CAP_100HDX, "cap_100hdx", KSTAT_DATA_UINT32, 0 }, 71 { ETHER_STAT_CAP_10FDX, "cap_10fdx", KSTAT_DATA_UINT32, 0 }, 72 { ETHER_STAT_CAP_10HDX, "cap_10hdx", KSTAT_DATA_UINT32, 0 }, 73 { ETHER_STAT_CAP_ASMPAUSE, "cap_asmpause", KSTAT_DATA_UINT32, 0 }, 74 { ETHER_STAT_CAP_PAUSE, "cap_pause", KSTAT_DATA_UINT32, 0 }, 75 { ETHER_STAT_CAP_AUTONEG, "cap_autoneg", KSTAT_DATA_UINT32, 0 }, 76 { ETHER_STAT_ADV_CAP_1000FDX, "adv_cap_1000fdx", KSTAT_DATA_UINT32, 0 }, 77 { ETHER_STAT_ADV_CAP_1000HDX, "adv_cap_1000hdx", KSTAT_DATA_UINT32, 0 }, 78 { ETHER_STAT_ADV_CAP_100FDX, "adv_cap_100fdx", KSTAT_DATA_UINT32, 0}, 79 { ETHER_STAT_ADV_CAP_100HDX, "adv_cap_100hdx", KSTAT_DATA_UINT32, 0}, 80 { ETHER_STAT_ADV_CAP_10FDX, "adv_cap_10fdx", KSTAT_DATA_UINT32, 0 }, 81 { ETHER_STAT_ADV_CAP_10HDX, "adv_cap_10hdx", KSTAT_DATA_UINT32, 0 }, 82 { ETHER_STAT_ADV_CAP_ASMPAUSE, "adv_cap_asmpause", KSTAT_DATA_UINT32, 83 0 }, 84 { ETHER_STAT_ADV_CAP_PAUSE, "adv_cap_pause", KSTAT_DATA_UINT32, 0 }, 85 { ETHER_STAT_ADV_CAP_AUTONEG, "adv_cap_autoneg", KSTAT_DATA_UINT32, 0 }, 86 { ETHER_STAT_LP_CAP_1000FDX, "lp_cap_1000fdx", KSTAT_DATA_UINT32, 0 }, 87 { ETHER_STAT_LP_CAP_1000HDX, "lp_cap_1000hdx", KSTAT_DATA_UINT32, 0 }, 88 { ETHER_STAT_LP_CAP_100FDX, "lp_cap_100fdx", KSTAT_DATA_UINT32, 0 }, 89 { ETHER_STAT_LP_CAP_100HDX, "lp_cap_100hdx", KSTAT_DATA_UINT32, 0 }, 90 { ETHER_STAT_LP_CAP_10FDX, "lp_cap_10fdx", KSTAT_DATA_UINT32, 0 }, 91 { ETHER_STAT_LP_CAP_10HDX, "lp_cap_10hdx", KSTAT_DATA_UINT32, 0 }, 92 { ETHER_STAT_LP_CAP_ASMPAUSE, "lp_cap_asmpause", KSTAT_DATA_UINT32, 0 }, 93 { ETHER_STAT_LP_CAP_PAUSE, "lp_cap_pause", KSTAT_DATA_UINT32, 0 }, 94 { ETHER_STAT_LP_CAP_AUTONEG, "lp_cap_autoneg", KSTAT_DATA_UINT32, 0 }, 95 { ETHER_STAT_LINK_ASMPAUSE, "link_asmpause", KSTAT_DATA_UINT32, 0 }, 96 { ETHER_STAT_LINK_PAUSE, "link_pause", KSTAT_DATA_UINT32, 0 }, 97 { ETHER_STAT_LINK_AUTONEG, "link_autoneg", KSTAT_DATA_UINT32, 0 }, 98 { ETHER_STAT_LINK_DUPLEX, "link_duplex", KSTAT_DATA_UINT32, 0 } 99 }; 100 101 static struct modlmisc mac_ether_modlmisc = { 102 &mod_miscops, 103 "Ethernet MAC plugin %I%" 104 }; 105 106 static struct modlinkage mac_ether_modlinkage = { 107 MODREV_1, 108 &mac_ether_modlmisc, 109 NULL 110 }; 111 112 static mactype_ops_t mac_ether_type_ops; 113 114 int 115 _init(void) 116 { 117 mactype_register_t *mtrp; 118 int err; 119 120 if ((mtrp = mactype_alloc(MACTYPE_VERSION)) == NULL) 121 return (ENOTSUP); 122 mtrp->mtr_ident = MAC_PLUGIN_IDENT_ETHER; 123 mtrp->mtr_ops = &mac_ether_type_ops; 124 mtrp->mtr_mactype = DL_ETHER; 125 mtrp->mtr_addrlen = ETHERADDRL; 126 mtrp->mtr_brdcst_addr = ether_brdcst; 127 mtrp->mtr_stats = ether_stats; 128 mtrp->mtr_statcount = A_CNT(ether_stats); 129 if ((err = mactype_register(mtrp)) == 0) { 130 if ((err = mod_install(&mac_ether_modlinkage)) != 0) 131 (void) mactype_unregister(MAC_PLUGIN_IDENT_ETHER); 132 } 133 mactype_free(mtrp); 134 return (err); 135 } 136 137 int 138 _fini(void) 139 { 140 int err; 141 142 if ((err = mactype_unregister(MAC_PLUGIN_IDENT_ETHER)) != 0) 143 return (err); 144 return (mod_remove(&mac_ether_modlinkage)); 145 } 146 147 int 148 _info(struct modinfo *modinfop) 149 { 150 return (mod_info(&mac_ether_modlinkage, modinfop)); 151 } 152 153 /* 154 * MAC Type plugin operations 155 */ 156 157 /* ARGSUSED */ 158 int 159 mac_ether_unicst_verify(const void *addr, void *mac_pdata) 160 { 161 /* If it's not a group address, then it's a valid unicast address. */ 162 return (((((uint8_t *)addr)[0] & 0x01) != 0) ? EINVAL : 0); 163 } 164 165 /* ARGSUSED */ 166 int 167 mac_ether_multicst_verify(const void *addr, void *mac_pdata) 168 { 169 /* The address must be a group address. */ 170 if ((((uint8_t *)addr)[0] & 0x01) == 0) 171 return (EINVAL); 172 /* The address must not be the media broadcast address. */ 173 if (bcmp(addr, ether_brdcst, ETHERADDRL) == 0) 174 return (EINVAL); 175 return (0); 176 } 177 178 /* 179 * Check the legality of an Ethernet SAP value. The following values are 180 * allowed, as specified by PSARC 2003/150: 181 * 182 * 0..ETHERMTU (1500) 802 semantics 183 * ETHERTYPE_802_MIN (1536)..ETHERTYPE_MAX (65535) ethertype semantics 184 * 185 * Note that SAP values less than or equal to ETHERMTU (1500) represent LLC 186 * channels. (See PSARC 2003/150). We strictly use SAP 0 to represent LLC 187 * channels. 188 */ 189 /* ARGSUSED */ 190 boolean_t 191 mac_ether_sap_verify(uint32_t sap, uint32_t *bind_sap, void *mac_pdata) 192 { 193 if (sap >= ETHERTYPE_802_MIN && sap <= ETHERTYPE_MAX) { 194 if (bind_sap != NULL) 195 *bind_sap = sap; 196 return (B_TRUE); 197 } 198 199 if (sap <= ETHERMTU) { 200 if (bind_sap != NULL) 201 *bind_sap = DLS_SAP_LLC; 202 return (B_TRUE); 203 } 204 return (B_FALSE); 205 } 206 207 /* ARGSUSED */ 208 mblk_t * 209 mac_ether_header(const void *saddr, const void *daddr, uint32_t sap, 210 void *mac_pdata, mblk_t *payload, size_t extra_len) 211 { 212 struct ether_header *ehp; 213 mblk_t *mp; 214 uint32_t bind_sap; 215 216 if (!mac_ether_sap_verify(sap, &bind_sap, NULL)) 217 return (NULL); 218 219 mp = allocb(sizeof (struct ether_header) + extra_len, BPRI_HI); 220 if (mp == NULL) 221 return (NULL); 222 223 ehp = (struct ether_header *)mp->b_rptr; 224 bcopy(daddr, &(ehp->ether_dhost), ETHERADDRL); 225 bcopy(saddr, &(ehp->ether_shost), ETHERADDRL); 226 227 /* 228 * sap <= ETHERMTU indicates that LLC is being used. If that's the 229 * case, then the ether_type needs to be set to the payload length. 230 */ 231 if ((bind_sap == DLS_SAP_LLC) && (payload != NULL)) 232 sap = msgdsize(payload); 233 ehp->ether_type = htons(sap); 234 235 mp->b_wptr += sizeof (struct ether_header); 236 return (mp); 237 } 238 239 /* ARGSUSED */ 240 int 241 mac_ether_header_info(mblk_t *mp, void *mac_pdata, mac_header_info_t *hdr_info) 242 { 243 struct ether_header *ehp; 244 uint16_t ether_type; 245 246 if (MBLKL(mp) < sizeof (struct ether_header)) 247 return (EINVAL); 248 249 ehp = (struct ether_header *)mp->b_rptr; 250 ether_type = ntohs(ehp->ether_type); 251 252 hdr_info->mhi_hdrsize = sizeof (struct ether_header); 253 hdr_info->mhi_daddr = (const uint8_t *)&(ehp->ether_dhost); 254 hdr_info->mhi_saddr = (const uint8_t *)&(ehp->ether_shost); 255 hdr_info->mhi_origsap = ether_type; 256 hdr_info->mhi_bindsap = (ether_type > ETHERMTU) ? 257 ether_type : DLS_SAP_LLC; 258 hdr_info->mhi_pktsize = (hdr_info->mhi_bindsap == DLS_SAP_LLC) ? 259 hdr_info->mhi_hdrsize + ether_type : 0; 260 261 if (mac_ether_unicst_verify(hdr_info->mhi_daddr, NULL) == 0) 262 hdr_info->mhi_dsttype = MAC_ADDRTYPE_UNICAST; 263 else if (mac_ether_multicst_verify(hdr_info->mhi_daddr, NULL) == 0) 264 hdr_info->mhi_dsttype = MAC_ADDRTYPE_MULTICAST; 265 else 266 hdr_info->mhi_dsttype = MAC_ADDRTYPE_BROADCAST; 267 268 return (0); 269 } 270 271 static mactype_ops_t mac_ether_type_ops = { 272 0, 273 mac_ether_unicst_verify, 274 mac_ether_multicst_verify, 275 mac_ether_sap_verify, 276 mac_ether_header, 277 mac_ether_header_info 278 }; 279