X-Git-Url: https://git.saurik.com/apple/xnu.git/blobdiff_plain/765c9de3b4af7c2078d16a03812ae2c7c2b24938..440d4c6cfad24426bfddca7518f16c17f4e443f7:/bsd/net/ether_if_module.c diff --git a/bsd/net/ether_if_module.c b/bsd/net/ether_if_module.c index 1720cb787..60b6846d2 100644 --- a/bsd/net/ether_if_module.c +++ b/bsd/net/ether_if_module.c @@ -1,23 +1,29 @@ /* - * Copyright (c) 2000 Apple Computer, Inc. All rights reserved. + * Copyright (c) 2000-2011 Apple Inc. All rights reserved. * - * @APPLE_LICENSE_HEADER_START@ + * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ * - * The contents of this file constitute Original Code as defined in and - * are subject to the Apple Public Source License Version 1.1 (the - * "License"). You may not use this file except in compliance with the - * License. Please obtain a copy of the License at - * http://www.apple.com/publicsource and read it before using this file. + * This file contains Original Code and/or Modifications of Original Code + * as defined in and that are subject to the Apple Public Source License + * Version 2.0 (the 'License'). You may not use this file except in + * compliance with the License. The rights granted to you under the License + * may not be used to create, or enable the creation or redistribution of, + * unlawful or unlicensed copies of an Apple operating system, or to + * circumvent, violate, or enable the circumvention or violation of, any + * terms of an Apple operating system software license agreement. * - * This Original Code and all software distributed under the License are - * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER + * Please obtain a copy of the License at + * http://www.opensource.apple.com/apsl/ and read it before using this file. + * + * The Original Code and all software distributed under the License are + * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the - * License for the specific language governing rights and limitations - * under the License. + * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. + * Please see the License for the specific language governing rights and + * limitations under the License. * - * @APPLE_LICENSE_HEADER_END@ + * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ */ /* * Copyright (c) 1982, 1989, 1993 @@ -64,14 +70,20 @@ #include #include +#include + +#define etherbroadcastaddr fugly #include -#include #include #include #include #include -#include +#include #include +#include /* For M_LOOP */ +#include +#include +#undef etherbroadcastaddr /* #if INET @@ -82,12 +94,18 @@ #include #endif */ - +#include #include +#include +#if BOND +#include +#endif /* BOND */ +#if IF_BRIDGE +#include +#endif /* IF_BRIDGE */ #include - #if LLC && CCITT extern struct ifqueue pkintrq; #endif @@ -100,342 +118,408 @@ extern struct ifqueue atalkintrq; #endif -#if BRIDGE -#include -#endif - -/* #include "vlan.h" */ -#if NVLAN > 0 -#include -#endif /* NVLAN > 0 */ - -static u_long lo_dlt = 0; -static ivedonethis = 0; +#define memcpy(x,y,z) bcopy(y, x, z) -#define IFP2AC(IFP) ((struct arpcom *)IFP) -u_char etherbroadcastaddr[6] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff }; +SYSCTL_DECL(_net_link); +SYSCTL_NODE(_net_link, IFT_ETHER, ether, CTLFLAG_RW|CTLFLAG_LOCKED, 0, "Ethernet"); - -#define DB_HEADER_SIZE 20 struct en_desc { - short total_len; - u_short ethertype; - u_long dl_tag; - struct ifnet *ifp; - struct if_proto *proto; - u_long proto_id_length; - u_long proto_id_data[8]; /* probably less - proto-id and bitmasks */ + u_int16_t type; /* Type of protocol stored in data */ + u_int32_t protocol_family; /* Protocol family */ + u_int32_t data[2]; /* Protocol data */ }; - -#define LITMUS_SIZE 16 -#define ETHER_DESC_BLK_SIZE 50 -#define MAX_INTERFACES 50 + +/* descriptors are allocated in blocks of ETHER_DESC_BLK_SIZE */ +#if CONFIG_EMBEDDED +#define ETHER_DESC_BLK_SIZE (2) /* IP, ARP */ +#else +#define ETHER_DESC_BLK_SIZE (10) +#endif /* - * Statics for demux module + * Header for the demux list, hangs off of IFP at if_family_cookie */ struct ether_desc_blk_str { - u_long n_blocks; - u_long *block_ptr; + u_int32_t n_max_used; + u_int32_t n_count; + u_int32_t n_used; + struct en_desc block_ptr[1]; }; +/* Size of the above struct before the array of struct en_desc */ +#define ETHER_DESC_HEADER_SIZE ((size_t)offsetof(struct ether_desc_blk_str, block_ptr)) +__private_extern__ u_char etherbroadcastaddr[ETHER_ADDR_LEN] = + { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff }; -struct dl_es_at_entry -{ - struct ifnet *ifp; - u_long dl_tag; - int ref_count; -}; - - -static struct ether_desc_blk_str ether_desc_blk[MAX_INTERFACES]; -static u_long litmus_mask[LITMUS_SIZE]; -static u_long litmus_length = 0; - - -/* - * Temp static for protocol registration XXX - */ - -#define MAX_EN_COUNT 30 - -static struct dl_es_at_entry en_at_array[MAX_EN_COUNT]; /* - * This could be done below in-line with heavy casting, but the pointer arithmetic is - * prone to error. + * Release all descriptor entries owned by this protocol (there may be several). + * Setting the type to 0 releases the entry. Eventually we should compact-out + * the unused entries. */ - -static -int desc_in_bounds(block, current_ptr, offset_length) - u_int block; - char *current_ptr; - u_long offset_length; +int +ether_del_proto( + ifnet_t ifp, + protocol_family_t protocol_family) { - u_long end_of_block; - u_long current_ptr_tmp; - - current_ptr_tmp = (u_long) current_ptr; - end_of_block = (u_long) ether_desc_blk[block].block_ptr; - end_of_block += (ETHER_DESC_BLK_SIZE * ether_desc_blk[block].n_blocks); - if ((current_ptr_tmp + offset_length) < end_of_block) - return 1; - else + struct ether_desc_blk_str *desc_blk = (struct ether_desc_blk_str *)ifp->if_family_cookie; + u_int32_t current = 0; + int found = 0; + + if (desc_blk == NULL) + return 0; + + for (current = desc_blk->n_max_used; current > 0; current--) { + if (desc_blk->block_ptr[current - 1].protocol_family == protocol_family) { + found = 1; + desc_blk->block_ptr[current - 1].type = 0; + desc_blk->n_used--; + } + } + + if (desc_blk->n_used == 0) { + FREE(ifp->if_family_cookie, M_IFADDR); + ifp->if_family_cookie = 0; + } + else { + /* Decrement n_max_used */ + for (; desc_blk->n_max_used > 0 && desc_blk->block_ptr[desc_blk->n_max_used - 1].type == 0; desc_blk->n_max_used--) + ; + } + return 0; -} + } -/* - * Release all descriptor entries owned by this dl_tag (there may be several). - * Setting the dl_tag to 0 releases the entry. Eventually we should compact-out - * the unused entries. - */ -static -int ether_del_proto(struct if_proto *proto, u_long dl_tag) +static int +ether_add_proto_internal( + struct ifnet *ifp, + protocol_family_t protocol, + const struct ifnet_demux_desc *demux) { - char *current_ptr = (char *) ether_desc_blk[proto->ifp->family_cookie].block_ptr; - struct en_desc *ed; - int i; - int found = 0; - - ed = (struct en_desc *) current_ptr; - - while(ed->total_len) { - if (ed->dl_tag == dl_tag) { - found = 1; - ed->dl_tag = 0; + struct en_desc *ed; + struct ether_desc_blk_str *desc_blk = (struct ether_desc_blk_str *)ifp->if_family_cookie; + u_int32_t i; + + switch (demux->type) { + /* These types are supported */ + /* Top three are preferred */ + case DLIL_DESC_ETYPE2: + if (demux->datalen != 2) { + return EINVAL; + } + break; + + case DLIL_DESC_SAP: + if (demux->datalen != 3) { + return EINVAL; + } + break; + + case DLIL_DESC_SNAP: + if (demux->datalen != 5) { + return EINVAL; + } + break; + + default: + return ENOTSUP; } + + // Verify a matching descriptor does not exist. + if (desc_blk != NULL) { + switch (demux->type) { + case DLIL_DESC_ETYPE2: + for (i = 0; i < desc_blk->n_max_used; i++) { + if (desc_blk->block_ptr[i].type == DLIL_DESC_ETYPE2 && + desc_blk->block_ptr[i].data[0] == + *(u_int16_t*)demux->data) { + return EADDRINUSE; + } + } + break; + case DLIL_DESC_SAP: + case DLIL_DESC_SNAP: + for (i = 0; i < desc_blk->n_max_used; i++) { + if (desc_blk->block_ptr[i].type == demux->type && + bcmp(desc_blk->block_ptr[i].data, demux->data, + demux->datalen) == 0) { + return EADDRINUSE; + } + } + break; + } + } + + // Check for case where all of the descriptor blocks are in use + if (desc_blk == NULL || desc_blk->n_used == desc_blk->n_count) { + struct ether_desc_blk_str *tmp; + u_int32_t new_count = ETHER_DESC_BLK_SIZE; + u_int32_t new_size; + u_int32_t old_size = 0; + + i = 0; + + if (desc_blk) { + new_count += desc_blk->n_count; + old_size = desc_blk->n_count * sizeof(struct en_desc) + ETHER_DESC_HEADER_SIZE; + i = desc_blk->n_used; + } + + new_size = new_count * sizeof(struct en_desc) + ETHER_DESC_HEADER_SIZE; + + tmp = _MALLOC(new_size, M_IFADDR, M_WAITOK); + if (tmp == 0) { + /* + * Remove any previous descriptors set in the call. + */ + return ENOMEM; + } - current_ptr += ed->total_len; - ed = (struct en_desc *) current_ptr; - } - } - - + bzero(((char *)tmp) + old_size, new_size - old_size); + if (desc_blk) { + bcopy(desc_blk, tmp, old_size); + FREE(desc_blk, M_IFADDR); + } + desc_blk = tmp; + ifp->if_family_cookie = (uintptr_t)desc_blk; + desc_blk->n_count = new_count; + } + else { + /* Find a free entry */ + for (i = 0; i < desc_blk->n_count; i++) { + if (desc_blk->block_ptr[i].type == 0) { + break; + } + } + } + + /* Bump n_max_used if appropriate */ + if (i + 1 > desc_blk->n_max_used) { + desc_blk->n_max_used = i + 1; + } + + ed = &desc_blk->block_ptr[i]; + ed->protocol_family = protocol; + ed->data[0] = 0; + ed->data[1] = 0; + + switch (demux->type) { + case DLIL_DESC_ETYPE2: + /* 2 byte ethernet raw protocol type is at native_type */ + /* prtocol must be in network byte order */ + ed->type = DLIL_DESC_ETYPE2; + ed->data[0] = *(u_int16_t*)demux->data; + break; + + case DLIL_DESC_SAP: + ed->type = DLIL_DESC_SAP; + bcopy(demux->data, &ed->data[0], 3); + break; + + case DLIL_DESC_SNAP: { + u_int8_t* pDest = ((u_int8_t*)&ed->data[0]) + 3; + ed->type = DLIL_DESC_SNAP; + bcopy(demux->data, pDest, 5); + } + break; + } + + desc_blk->n_used++; + + return 0; +} -static -int ether_add_proto(struct ddesc_head_str *desc_head, struct if_proto *proto, u_long dl_tag) -{ - char *current_ptr; - struct dlil_demux_desc *desc; - u_long id_length; /* IN LONGWORDS!!! */ - struct en_desc *ed; - u_long *bitmask; - u_long *proto_id; - int i; - short total_length; - u_long block_count; - u_long *tmp; - - - TAILQ_FOREACH(desc, desc_head, next) { - switch (desc->type) - { - case DLIL_DESC_RAW: - id_length = desc->variants.bitmask.proto_id_length; - break; - - case DLIL_DESC_802_2: - id_length = 1; - break; - - case DLIL_DESC_802_2_SNAP: - id_length = 2; - break; - - default: - return EINVAL; - } - -restart: - block_count = ether_desc_blk[proto->ifp->family_cookie].n_blocks; - current_ptr = (char *) ether_desc_blk[proto->ifp->family_cookie].block_ptr; - ed = (struct en_desc *) current_ptr; - total_length = ((id_length << 2) * 2) + DB_HEADER_SIZE; - - while ((ed->total_len) && (desc_in_bounds(proto->ifp->family_cookie, - current_ptr, total_length))) { - if ((ed->dl_tag == 0) && (total_length <= ed->total_len)) - break; - else - current_ptr += *(short *)current_ptr; - - ed = (struct en_desc *) current_ptr; - } - - if (!desc_in_bounds(proto->ifp->family_cookie, current_ptr, total_length)) { - - tmp = _MALLOC((ETHER_DESC_BLK_SIZE * (block_count + 1)), - M_IFADDR, M_WAITOK); - if (tmp == 0) { - /* - * Remove any previous descriptors set in the call. - */ - ether_del_proto(proto, dl_tag); - return ENOMEM; - } - - bzero(tmp, ETHER_DESC_BLK_SIZE * (block_count + 1)); - bcopy(ether_desc_blk[proto->ifp->family_cookie].block_ptr, - tmp, (ETHER_DESC_BLK_SIZE * block_count)); - FREE(ether_desc_blk[proto->ifp->family_cookie].block_ptr, M_IFADDR); - ether_desc_blk[proto->ifp->family_cookie].n_blocks = block_count + 1; - ether_desc_blk[proto->ifp->family_cookie].block_ptr = tmp; - goto restart; - } - - if (ed->total_len == 0) - ed->total_len = total_length; - ed->ethertype = *((u_short *) desc->native_type); - - ed->dl_tag = dl_tag; - ed->proto = proto; - ed->proto_id_length = id_length; - ed->ifp = proto->ifp; - - switch (desc->type) - { - case DLIL_DESC_RAW: - bcopy(desc->variants.bitmask.proto_id, &ed->proto_id_data[0], (id_length << 2) ); - bcopy(desc->variants.bitmask.proto_id_mask, &ed->proto_id_data[id_length], - (id_length << 2)); - break; - - case DLIL_DESC_802_2: - ed->proto_id_data[0] = 0; - bcopy(&desc->variants.desc_802_2, &ed->proto_id_data[0], 3); - ed->proto_id_data[1] = 0xffffff00; - break; - - case DLIL_DESC_802_2_SNAP: - /* XXX Add verification of fixed values here */ - - ed->proto_id_data[0] = 0; - ed->proto_id_data[1] = 0; - bcopy(&desc->variants.desc_802_2_SNAP, &ed->proto_id_data[0], 8); - ed->proto_id_data[2] = 0xffffffff; - ed->proto_id_data[3] = 0xffffffff;; - break; - } - - if (id_length) { - proto_id = (u_long *) &ed->proto_id_data[0]; - bitmask = (u_long *) &ed->proto_id_data[id_length]; - for (i=0; i < (id_length); i++) { - litmus_mask[i] &= bitmask[i]; - litmus_mask[i] &= proto_id[i]; - } - if (id_length > litmus_length) - litmus_length = id_length; - } - } - - return 0; -} - - -static -int ether_shutdown() +int +ether_add_proto( + ifnet_t ifp, + protocol_family_t protocol, + const struct ifnet_demux_desc *demux_list, + u_int32_t demux_count) { - return 0; + int error = 0; + u_int32_t i; + + for (i = 0; i < demux_count; i++) { + error = ether_add_proto_internal(ifp, protocol, &demux_list[i]); + if (error) { + ether_del_proto(ifp, protocol); + break; + } + } + + return error; } +int +ether_demux( + ifnet_t ifp, + mbuf_t m, + char *frame_header, + protocol_family_t *protocol_family) +{ + struct ether_header *eh = (struct ether_header *)(void *)frame_header; + u_short ether_type = eh->ether_type; + u_int16_t type; + u_int8_t *data; + u_int32_t i = 0; + struct ether_desc_blk_str *desc_blk = (struct ether_desc_blk_str *)ifp->if_family_cookie; + u_int32_t maxd = desc_blk ? desc_blk->n_max_used : 0; + struct en_desc *ed = desc_blk ? desc_blk->block_ptr : NULL; + u_int32_t extProto1 = 0; + u_int32_t extProto2 = 0; + + if (eh->ether_dhost[0] & 1) { + /* Check for broadcast */ + if (_ether_cmp(etherbroadcastaddr, eh->ether_dhost) == 0) + m->m_flags |= M_BCAST; + else + m->m_flags |= M_MCAST; + } + if (m->m_flags & M_HASFCS) { + /* + * If the M_HASFCS is set by the driver we want to make sure + * that we strip off the trailing FCS data before handing it + * up the stack. + */ + m_adj(m, -ETHER_CRC_LEN); + m->m_flags &= ~M_HASFCS; + } + + if (ifp->if_eflags & IFEF_BOND) { + /* if we're bonded, bond "protocol" gets all the packets */ + *protocol_family = PF_BOND; + return (0); + } - - -int ether_demux(ifp, m, frame_header, proto) - struct ifnet *ifp; - struct mbuf *m; - char *frame_header; - struct if_proto **proto; - -{ - register struct ether_header *eh = (struct ether_header *)frame_header; - u_short ether_type; - char *current_ptr = (char *) ether_desc_blk[ifp->family_cookie].block_ptr; - struct dlil_demux_desc *desc; - register u_long temp; - u_long *data; - register struct if_proto *ifproto; - u_long i; - struct en_desc *ed; - - - if (eh->ether_dhost[0] & 1) { - if (bcmp((caddr_t)etherbroadcastaddr, (caddr_t)eh->ether_dhost, - sizeof(etherbroadcastaddr)) == 0) - m->m_flags |= M_BCAST; - else - m->m_flags |= M_MCAST; - } - - ether_type = ntohs(eh->ether_type); - - /* - * Search through the connected protocols for a match. - */ - - - data = mtod(m, u_long *); - ed = (struct en_desc *) current_ptr; - while (desc_in_bounds(ifp->family_cookie, current_ptr, DB_HEADER_SIZE)) { - if (ed->total_len == 0) - break; - - if ((ed->dl_tag != 0) && (ed->ifp == ifp) && - ((ed->ethertype == ntohs(eh->ether_type)) || (ed->ethertype == 0))) { - if (ed->proto_id_length) { - for (i=0; i < (ed->proto_id_length); i++) { - temp = ntohs(data[i]) & ed->proto_id_data[ed->proto_id_length + i]; - if ((temp ^ ed->proto_id_data[i])) - break; + if ((eh->ether_dhost[0] & 1) == 0) { + /* + * When the driver is put into promiscuous mode we may receive unicast + * frames that are not intended for our interfaces. They are marked here + * as being promiscuous so the caller may dispose of them after passing + * the packets to any interface filters. + */ + if (_ether_cmp(eh->ether_dhost, ifnet_lladdr(ifp))) { + m->m_flags |= M_PROMISC; } - - if (i >= (ed->proto_id_length)) { - *proto = ed->proto; - return 0; + } + + /* check for VLAN */ + if ((m->m_pkthdr.csum_flags & CSUM_VLAN_TAG_VALID) != 0) { + if (EVL_VLANOFTAG(m->m_pkthdr.vlan_tag) != 0) { + *protocol_family = PF_VLAN; + return (0); } - } - else { - *proto = ed->proto; - return 0; - } + /* the packet is just priority-tagged, clear the bit */ + m->m_pkthdr.csum_flags &= ~CSUM_VLAN_TAG_VALID; } - current_ptr += ed->total_len; - ed = (struct en_desc *) current_ptr; - } + else if (ether_type == htons(ETHERTYPE_VLAN)) { + struct ether_vlan_header * evl; + + evl = (struct ether_vlan_header *)(void *)frame_header; + if (m->m_len < ETHER_VLAN_ENCAP_LEN + || ntohs(evl->evl_proto) == ETHERTYPE_VLAN + || EVL_VLANOFTAG(ntohs(evl->evl_tag)) != 0) { + *protocol_family = PF_VLAN; + return 0; + } + /* the packet is just priority-tagged */ -/* - kprintf("ether_demux - No match for <%x><%x><%x><%x><%x><%x><%x<%x>\n", - eh->ether_type,data[0], data[1], data[2], data[3], data[4],data[5],data[6]); -*/ + /* make the encapsulated ethertype the actual ethertype */ + ether_type = evl->evl_encap_proto = evl->evl_proto; - return ENOENT; + /* remove the encapsulation header */ + m->m_len -= ETHER_VLAN_ENCAP_LEN; + m->m_data += ETHER_VLAN_ENCAP_LEN; + m->m_pkthdr.len -= ETHER_VLAN_ENCAP_LEN; + m->m_pkthdr.csum_flags = 0; /* can't trust hardware checksum */ + } + + data = mtod(m, u_int8_t*); + + /* + * Determine the packet's protocol type and stuff the protocol into + * longs for quick compares. + */ + + if (ntohs(ether_type) <= 1500) { + bcopy(data, &extProto1, sizeof (u_int32_t)); + + // SAP or SNAP + if ((extProto1 & htonl(0xFFFFFF00)) == htonl(0xAAAA0300)) { + // SNAP + type = DLIL_DESC_SNAP; + bcopy(data + sizeof(u_int32_t), &extProto2, sizeof (u_int32_t)); + extProto1 &= htonl(0x000000FF); + } else { + type = DLIL_DESC_SAP; + extProto1 &= htonl(0xFFFFFF00); + } + } else { + type = DLIL_DESC_ETYPE2; + } + + /* + * Search through the connected protocols for a match. + */ + + switch (type) { + case DLIL_DESC_ETYPE2: + for (i = 0; i < maxd; i++) { + if ((ed[i].type == type) && (ed[i].data[0] == ether_type)) { + *protocol_family = ed[i].protocol_family; + return 0; + } + } + break; + + case DLIL_DESC_SAP: + for (i = 0; i < maxd; i++) { + if ((ed[i].type == type) && (ed[i].data[0] == extProto1)) { + *protocol_family = ed[i].protocol_family; + return 0; + } + } + break; + + case DLIL_DESC_SNAP: + for (i = 0; i < maxd; i++) { + if ((ed[i].type == type) && (ed[i].data[0] == extProto1) && + (ed[i].data[1] == extProto2)) { + *protocol_family = ed[i].protocol_family; + return 0; + } + } + break; + } + + return ENOENT; } - - /* * Ethernet output routine. * Encapsulate a packet of type family for the local net. * Use trailer local net encapsulation if enough data in first * packet leaves a multiple of 512 bytes of data in remainder. - * Assumes that ifp is actually pointer to arpcom structure. */ int -ether_frameout(ifp, m, ndest, edst, ether_type) - register struct ifnet *ifp; - struct mbuf **m; - struct sockaddr *ndest; - char *edst; - char *ether_type; +ether_frameout( + struct ifnet *ifp, + struct mbuf **m, + const struct sockaddr *ndest, + const char *edst, + const char *ether_type +#if KPI_INTERFACE_EMBEDDED + , + u_int32_t *prepend_len, + u_int32_t *postpend_len +#endif /* KPI_INTERFACE_EMBEDDED */ + ) { - register struct ether_header *eh; - int hlen; /* link layer header lenght */ - struct arpcom *ac = IFP2AC(ifp); - + struct ether_header *eh; + int hlen; /* link layer header length */ hlen = ETHER_HDR_LEN; @@ -450,26 +534,21 @@ ether_frameout(ifp, m, ndest, edst, ether_type) */ if ((ifp->if_flags & IFF_SIMPLEX) && ((*m)->m_flags & M_LOOP)) { - if (lo_dlt == 0) - dlil_find_dltag(APPLE_IF_FAM_LOOPBACK, 0, PF_INET, &lo_dlt); - - if (lo_dlt) { - if ((*m)->m_flags & M_BCAST) { - struct mbuf *n = m_copy(*m, 0, (int)M_COPYALL); - if (n != NULL) - dlil_output(lo_dlt, n, 0, ndest, 0); - } - else - { - if (bcmp(edst, ac->ac_enaddr, ETHER_ADDR_LEN) == 0) { - dlil_output(lo_dlt, *m, 0, ndest, 0); - return EJUSTRETURN; - } - } + if (lo_ifp) { + if ((*m)->m_flags & M_BCAST) { + struct mbuf *n = m_copy(*m, 0, (int)M_COPYALL); + if (n != NULL) + dlil_output(lo_ifp, ndest->sa_family, n, NULL, ndest, 0, NULL); + } + else { + if (_ether_cmp(edst, ifnet_lladdr(ifp)) == 0) { + dlil_output(lo_ifp, ndest->sa_family, *m, NULL, ndest, 0, NULL); + return EJUSTRETURN; + } + } } } - - + /* * Add local net header. If no space in first mbuf, * allocate another. @@ -479,141 +558,98 @@ ether_frameout(ifp, m, ndest, edst, ether_type) return (EJUSTRETURN); } - +#if KPI_INTERFACE_EMBEDDED + *prepend_len = sizeof (struct ether_header); + *postpend_len = 0; +#endif /* KPI_INTERFACE_EMBEDDED */ + eh = mtod(*m, struct ether_header *); (void)memcpy(&eh->ether_type, ether_type, sizeof(eh->ether_type)); - (void)memcpy(eh->ether_dhost, edst, 6); - (void)memcpy(eh->ether_shost, ac->ac_enaddr, - sizeof(eh->ether_shost)); + (void)memcpy(eh->ether_dhost, edst, ETHER_ADDR_LEN); + ifnet_lladdr_copy_bytes(ifp, eh->ether_shost, ETHER_ADDR_LEN); return 0; } - -static -int ether_add_if(struct ifnet *ifp) +errno_t +ether_check_multi( + __unused ifnet_t ifp, + const struct sockaddr *proto_addr) { - u_long i; - - ifp->if_framer = ether_frameout; - ifp->if_demux = ether_demux; - ifp->if_event = 0; - - for (i=0; i < MAX_INTERFACES; i++) - if (ether_desc_blk[i].n_blocks == 0) - break; - - if (i == MAX_INTERFACES) - return ENOMEM; - - ether_desc_blk[i].block_ptr = _MALLOC(ETHER_DESC_BLK_SIZE, M_IFADDR, M_WAITOK); - if (ether_desc_blk[i].block_ptr == 0) - return ENOMEM; - - ether_desc_blk[i].n_blocks = 1; - bzero(ether_desc_blk[i].block_ptr, ETHER_DESC_BLK_SIZE); - - ifp->family_cookie = i; - - return 0; -} - -static -int ether_del_if(struct ifnet *ifp) -{ - if ((ifp->family_cookie < MAX_INTERFACES) && - (ether_desc_blk[ifp->family_cookie].n_blocks)) { - FREE(ether_desc_blk[ifp->family_cookie].block_ptr, M_IFADDR); - ether_desc_blk[ifp->family_cookie].n_blocks = 0; - return 0; - } - else - return ENOENT; + errno_t result = EAFNOSUPPORT; + const u_char *e_addr; + + /* + * AF_SPEC and AF_LINK don't require translation. We do + * want to verify that they specify a valid multicast. + */ + switch(proto_addr->sa_family) { + case AF_UNSPEC: + e_addr = (const u_char*)&proto_addr->sa_data[0]; + if ((e_addr[0] & 0x01) != 0x01) + result = EADDRNOTAVAIL; + else + result = 0; + break; + + case AF_LINK: + e_addr = CONST_LLADDR((const struct sockaddr_dl*) + (uintptr_t)(size_t)proto_addr); + if ((e_addr[0] & 0x01) != 0x01) + result = EADDRNOTAVAIL; + else + result = 0; + break; + } + + return result; } - - int -ether_ifmod_ioctl(ifp, command, data) - struct ifnet *ifp; - u_long command; - caddr_t data; +ether_ioctl( + __unused ifnet_t ifp, + __unused u_int32_t command, + __unused void* data) { - struct rslvmulti_req *rsreq = (struct rslvmulti_req *) data; - int error = 0; - struct sockaddr_dl *sdl; - struct sockaddr_in *sin; - u_char *e_addr; - - - switch (command) - { - case SIOCRSLVMULTI: - switch(rsreq->sa->sa_family) - { - case AF_UNSPEC: - /* AppleTalk uses AF_UNSPEC for multicast registration. - * No mapping needed. Just check that it's a valid MC address. - */ - e_addr = &rsreq->sa->sa_data[0]; - if ((e_addr[0] & 1) != 1) - return EADDRNOTAVAIL; - *rsreq->llsa = 0; - return EJUSTRETURN; - - - case AF_LINK: - /* - * No mapping needed. Just check that it's a valid MC address. - */ - sdl = (struct sockaddr_dl *)rsreq->sa; - e_addr = LLADDR(sdl); - if ((e_addr[0] & 1) != 1) - return EADDRNOTAVAIL; - *rsreq->llsa = 0; - return EJUSTRETURN; - - default: - return EAFNOSUPPORT; - } - - default: - return EOPNOTSUPP; - } + return EOPNOTSUPP; } - -int ether_family_init() +__private_extern__ int ether_family_init(void) { - int i; - struct dlil_ifmod_reg_str ifmod_reg; - - if (ivedonethis) - return 0; - - ivedonethis = 1; - - ifmod_reg.add_if = ether_add_if; - ifmod_reg.del_if = ether_del_if; - ifmod_reg.add_proto = ether_add_proto; - ifmod_reg.del_proto = ether_del_proto; - ifmod_reg.ifmod_ioctl = ether_ifmod_ioctl; - ifmod_reg.shutdown = ether_shutdown; - - if (dlil_reg_if_modules(APPLE_IF_FAM_ETHERNET, &ifmod_reg)) { - printf("WARNING: ether_family_init -- Can't register if family modules\n"); - return EIO; - } - - for (i=0; i < (LITMUS_SIZE/4); i++) - litmus_mask[i] = 0xffffffff; - - for (i=0; i < MAX_INTERFACES; i++) - ether_desc_blk[i].n_blocks = 0; - - for (i=0; i < MAX_EN_COUNT; i++) - en_at_array[i].ifp = 0; - - return 0; + errno_t error = 0; + + /* Register protocol registration functions */ + if ((error = proto_register_plumber(PF_INET, APPLE_IF_FAM_ETHERNET, + ether_attach_inet, ether_detach_inet)) != 0) { + printf("proto_register_plumber failed for PF_INET error=%d\n", error); + goto done; + } +#if INET6 + if ((error = proto_register_plumber(PF_INET6, APPLE_IF_FAM_ETHERNET, + ether_attach_inet6, ether_detach_inet6)) != 0) { + printf("proto_register_plumber failed for PF_INET6 error=%d\n", error); + goto done; + } +#endif /* INET6 */ +#if NETAT + if ((error = proto_register_plumber(PF_APPLETALK, APPLE_IF_FAM_ETHERNET, + ether_attach_at, ether_detach_at)) != 0) { + printf("proto_register_plumber failed PF_APPLETALK error=%d\n", error); + goto done; + } +#endif /* NETAT */ +#if VLAN + vlan_family_init(); +#endif /* VLAN */ +#if BOND + bond_family_init(); +#endif /* BOND */ +#if IF_BRIDGE + bridgeattach(0); +#endif /* IF_BRIDGE */ + + done: + + return (error); }