1c398230bSWarner Losh /*- 251369649SPedro F. Giffuni * SPDX-License-Identifier: BSD-3-Clause 351369649SPedro F. Giffuni * 4df8bae1dSRodney W. Grimes * Copyright (c) 1982, 1989, 1993 5df8bae1dSRodney W. Grimes * The Regents of the University of California. All rights reserved. 6df8bae1dSRodney W. Grimes * 7df8bae1dSRodney W. Grimes * Redistribution and use in source and binary forms, with or without 8df8bae1dSRodney W. Grimes * modification, are permitted provided that the following conditions 9df8bae1dSRodney W. Grimes * are met: 10df8bae1dSRodney W. Grimes * 1. Redistributions of source code must retain the above copyright 11df8bae1dSRodney W. Grimes * notice, this list of conditions and the following disclaimer. 12df8bae1dSRodney W. Grimes * 2. Redistributions in binary form must reproduce the above copyright 13df8bae1dSRodney W. Grimes * notice, this list of conditions and the following disclaimer in the 14df8bae1dSRodney W. Grimes * documentation and/or other materials provided with the distribution. 15fbbd9655SWarner Losh * 3. Neither the name of the University nor the names of its contributors 16df8bae1dSRodney W. Grimes * may be used to endorse or promote products derived from this software 17df8bae1dSRodney W. Grimes * without specific prior written permission. 18df8bae1dSRodney W. Grimes * 19df8bae1dSRodney W. Grimes * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20df8bae1dSRodney W. Grimes * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21df8bae1dSRodney W. Grimes * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22df8bae1dSRodney W. Grimes * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23df8bae1dSRodney W. Grimes * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24df8bae1dSRodney W. Grimes * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25df8bae1dSRodney W. Grimes * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26df8bae1dSRodney W. Grimes * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27df8bae1dSRodney W. Grimes * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28df8bae1dSRodney W. Grimes * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29df8bae1dSRodney W. Grimes * SUCH DAMAGE. 30df8bae1dSRodney W. Grimes * 31df8bae1dSRodney W. Grimes * @(#)if_ethersubr.c 8.1 (Berkeley) 6/10/93 32c3aac50fSPeter Wemm * $FreeBSD$ 33df8bae1dSRodney W. Grimes */ 34df8bae1dSRodney W. Grimes 351d5e9e22SEivind Eklund #include "opt_inet.h" 36cfa1ca9dSYoshinobu Inoue #include "opt_inet6.h" 374cf49a43SJulian Elischer #include "opt_netgraph.h" 386eeac1d9SJulian Elischer #include "opt_mbuf_profiling.h" 397527624eSRobert Watson #include "opt_rss.h" 40430df5f4SEivind Eklund 41df8bae1dSRodney W. Grimes #include <sys/param.h> 42df8bae1dSRodney W. Grimes #include <sys/systm.h> 438819ad85SSepherosa Ziehau #include <sys/bus.h> 448819ad85SSepherosa Ziehau #include <sys/eventhandler.h> 45df8bae1dSRodney W. Grimes #include <sys/kernel.h> 46385195c0SMarko Zec #include <sys/lock.h> 47df8bae1dSRodney W. Grimes #include <sys/malloc.h> 4841ee9f1cSPoul-Henning Kamp #include <sys/module.h> 49df8bae1dSRodney W. Grimes #include <sys/mbuf.h> 50f1379734SKonstantin Belousov #include <sys/priv.h> 5110b1fde0SMark Murray #include <sys/random.h> 52df8bae1dSRodney W. Grimes #include <sys/socket.h> 5351a53488SBruce Evans #include <sys/sockio.h> 54602d513cSGarrett Wollman #include <sys/sysctl.h> 55ef1f9169SMarcel Moolenaar #include <sys/uuid.h> 56df8bae1dSRodney W. Grimes 57df8bae1dSRodney W. Grimes #include <net/if.h> 5876039bc8SGleb Smirnoff #include <net/if_var.h> 59d7647d96SDag-Erling Smørgrav #include <net/if_arp.h> 60df8bae1dSRodney W. Grimes #include <net/netisr.h> 61df8bae1dSRodney W. Grimes #include <net/route.h> 62df8bae1dSRodney W. Grimes #include <net/if_llc.h> 63df8bae1dSRodney W. Grimes #include <net/if_dl.h> 64df8bae1dSRodney W. Grimes #include <net/if_types.h> 652e2de7f2SArchie Cobbs #include <net/bpf.h> 66e1e1452dSArchie Cobbs #include <net/ethernet.h> 67fd6238a6SAndrew Thompson #include <net/if_bridgevar.h> 68c1d93b05SSam Leffler #include <net/if_vlan_var.h> 696e6b3f7cSQing Li #include <net/if_llatbl.h> 707d4317bdSAlexander V. Chernikov #include <net/pfil.h> 71b2bdc62aSAdrian Chadd #include <net/rss_config.h> 724b79449eSBjoern A. Zeeb #include <net/vnet.h> 73df8bae1dSRodney W. Grimes 7475bf2db3SGleb Smirnoff #include <netpfil/pf/pf_mtag.h> 7575bf2db3SGleb Smirnoff 7682cd038dSYoshinobu Inoue #if defined(INET) || defined(INET6) 77df8bae1dSRodney W. Grimes #include <netinet/in.h> 78df8bae1dSRodney W. Grimes #include <netinet/in_var.h> 79df8bae1dSRodney W. Grimes #include <netinet/if_ether.h> 8054bfbd51SWill Andrews #include <netinet/ip_carp.h> 810bcfa8e4SLuigi Rizzo #include <netinet/ip_var.h> 821d5e9e22SEivind Eklund #endif 8382cd038dSYoshinobu Inoue #ifdef INET6 8482cd038dSYoshinobu Inoue #include <netinet6/nd6.h> 8582cd038dSYoshinobu Inoue #endif 86aed55708SRobert Watson #include <security/mac/mac_framework.h> 87aed55708SRobert Watson 88d54d93acSEd Maste #ifdef CTASSERT 89d54d93acSEd Maste CTASSERT(sizeof (struct ether_header) == ETHER_ADDR_LEN * 2 + 2); 90d54d93acSEd Maste CTASSERT(sizeof (struct ether_addr) == ETHER_ADDR_LEN); 91d54d93acSEd Maste #endif 92d54d93acSEd Maste 937d4317bdSAlexander V. Chernikov VNET_DEFINE(struct pfil_head, link_pfil_hook); /* Packet filter hooks */ 947d4317bdSAlexander V. Chernikov 95e1e1452dSArchie Cobbs /* netgraph node hooks for ng_ether(4) */ 96c1d93b05SSam Leffler void (*ng_ether_input_p)(struct ifnet *ifp, struct mbuf **mp); 97c1d93b05SSam Leffler void (*ng_ether_input_orphan_p)(struct ifnet *ifp, struct mbuf *m); 98e1e1452dSArchie Cobbs int (*ng_ether_output_p)(struct ifnet *ifp, struct mbuf **mp); 99e1e1452dSArchie Cobbs void (*ng_ether_attach_p)(struct ifnet *ifp); 100e1e1452dSArchie Cobbs void (*ng_ether_detach_p)(struct ifnet *ifp); 101e1e1452dSArchie Cobbs 102824eb9dcSDavid E. O'Brien void (*vlan_input_p)(struct ifnet *, struct mbuf *); 1039d4fe4b2SBrooks Davis 104fd6238a6SAndrew Thompson /* if_bridge(4) support */ 1058f867517SAndrew Thompson struct mbuf *(*bridge_input_p)(struct ifnet *, struct mbuf *); 1068f867517SAndrew Thompson int (*bridge_output_p)(struct ifnet *, struct mbuf *, 1078f867517SAndrew Thompson struct sockaddr *, struct rtentry *); 108c8b01292SAndrew Thompson void (*bridge_dn_p)(struct mbuf *, struct ifnet *); 1098f867517SAndrew Thompson 11018242d3bSAndrew Thompson /* if_lagg(4) support */ 11118242d3bSAndrew Thompson struct mbuf *(*lagg_input_p)(struct ifnet *, struct mbuf *); 112b47888ceSAndrew Thompson 113e589108dSRobert Watson static const u_char etherbroadcastaddr[ETHER_ADDR_LEN] = 114868d8b62SMatthew N. Dodd { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff }; 115868d8b62SMatthew N. Dodd 116929ddbbbSAlfred Perlstein static int ether_resolvemulti(struct ifnet *, struct sockaddr **, 117929ddbbbSAlfred Perlstein struct sockaddr *); 118d3c351c5SMarko Zec #ifdef VIMAGE 119d3c351c5SMarko Zec static void ether_reassign(struct ifnet *, struct vnet *, char *); 120d3c351c5SMarko Zec #endif 1214fb3a820SAlexander V. Chernikov static int ether_requestencap(struct ifnet *, struct if_encap_req *); 122868d8b62SMatthew N. Dodd 12369462a82SBruce M Simpson 1244c8e8c05SJulian Elischer #define senderr(e) do { error = (e); goto bad;} while (0) 125df8bae1dSRodney W. Grimes 12622f8ce43SAlexander V. Chernikov static void 12722f8ce43SAlexander V. Chernikov update_mbuf_csumflags(struct mbuf *src, struct mbuf *dst) 12822f8ce43SAlexander V. Chernikov { 12922f8ce43SAlexander V. Chernikov int csum_flags = 0; 13022f8ce43SAlexander V. Chernikov 13122f8ce43SAlexander V. Chernikov if (src->m_pkthdr.csum_flags & CSUM_IP) 13222f8ce43SAlexander V. Chernikov csum_flags |= (CSUM_IP_CHECKED|CSUM_IP_VALID); 13322f8ce43SAlexander V. Chernikov if (src->m_pkthdr.csum_flags & CSUM_DELAY_DATA) 13422f8ce43SAlexander V. Chernikov csum_flags |= (CSUM_DATA_VALID|CSUM_PSEUDO_HDR); 13522f8ce43SAlexander V. Chernikov if (src->m_pkthdr.csum_flags & CSUM_SCTP) 13622f8ce43SAlexander V. Chernikov csum_flags |= CSUM_SCTP_VALID; 13722f8ce43SAlexander V. Chernikov dst->m_pkthdr.csum_flags |= csum_flags; 13822f8ce43SAlexander V. Chernikov if (csum_flags & CSUM_DATA_VALID) 13922f8ce43SAlexander V. Chernikov dst->m_pkthdr.csum_data = 0xffff; 14022f8ce43SAlexander V. Chernikov } 14122f8ce43SAlexander V. Chernikov 142df8bae1dSRodney W. Grimes /* 1434fb3a820SAlexander V. Chernikov * Handle link-layer encapsulation requests. 1444fb3a820SAlexander V. Chernikov */ 1454fb3a820SAlexander V. Chernikov static int 1464fb3a820SAlexander V. Chernikov ether_requestencap(struct ifnet *ifp, struct if_encap_req *req) 1474fb3a820SAlexander V. Chernikov { 1484fb3a820SAlexander V. Chernikov struct ether_header *eh; 1494fb3a820SAlexander V. Chernikov struct arphdr *ah; 1504fb3a820SAlexander V. Chernikov uint16_t etype; 1514fb3a820SAlexander V. Chernikov const u_char *lladdr; 1524fb3a820SAlexander V. Chernikov 1534fb3a820SAlexander V. Chernikov if (req->rtype != IFENCAP_LL) 1544fb3a820SAlexander V. Chernikov return (EOPNOTSUPP); 1554fb3a820SAlexander V. Chernikov 1564fb3a820SAlexander V. Chernikov if (req->bufsize < ETHER_HDR_LEN) 1574fb3a820SAlexander V. Chernikov return (ENOMEM); 1584fb3a820SAlexander V. Chernikov 1594fb3a820SAlexander V. Chernikov eh = (struct ether_header *)req->buf; 1604fb3a820SAlexander V. Chernikov lladdr = req->lladdr; 1614fb3a820SAlexander V. Chernikov req->lladdr_off = 0; 1624fb3a820SAlexander V. Chernikov 1634fb3a820SAlexander V. Chernikov switch (req->family) { 1644fb3a820SAlexander V. Chernikov case AF_INET: 1654fb3a820SAlexander V. Chernikov etype = htons(ETHERTYPE_IP); 1664fb3a820SAlexander V. Chernikov break; 1674fb3a820SAlexander V. Chernikov case AF_INET6: 1684fb3a820SAlexander V. Chernikov etype = htons(ETHERTYPE_IPV6); 1694fb3a820SAlexander V. Chernikov break; 1704fb3a820SAlexander V. Chernikov case AF_ARP: 1714fb3a820SAlexander V. Chernikov ah = (struct arphdr *)req->hdata; 1724fb3a820SAlexander V. Chernikov ah->ar_hrd = htons(ARPHRD_ETHER); 1734fb3a820SAlexander V. Chernikov 1744fb3a820SAlexander V. Chernikov switch(ntohs(ah->ar_op)) { 1754fb3a820SAlexander V. Chernikov case ARPOP_REVREQUEST: 1764fb3a820SAlexander V. Chernikov case ARPOP_REVREPLY: 1774fb3a820SAlexander V. Chernikov etype = htons(ETHERTYPE_REVARP); 1784fb3a820SAlexander V. Chernikov break; 1794fb3a820SAlexander V. Chernikov case ARPOP_REQUEST: 1804fb3a820SAlexander V. Chernikov case ARPOP_REPLY: 1814fb3a820SAlexander V. Chernikov default: 1824fb3a820SAlexander V. Chernikov etype = htons(ETHERTYPE_ARP); 1834fb3a820SAlexander V. Chernikov break; 1844fb3a820SAlexander V. Chernikov } 1854fb3a820SAlexander V. Chernikov 1864fb3a820SAlexander V. Chernikov if (req->flags & IFENCAP_FLAG_BROADCAST) 1874fb3a820SAlexander V. Chernikov lladdr = ifp->if_broadcastaddr; 1884fb3a820SAlexander V. Chernikov break; 1894fb3a820SAlexander V. Chernikov default: 1904fb3a820SAlexander V. Chernikov return (EAFNOSUPPORT); 1914fb3a820SAlexander V. Chernikov } 1924fb3a820SAlexander V. Chernikov 1934fb3a820SAlexander V. Chernikov memcpy(&eh->ether_type, &etype, sizeof(eh->ether_type)); 1944fb3a820SAlexander V. Chernikov memcpy(eh->ether_dhost, lladdr, ETHER_ADDR_LEN); 1954fb3a820SAlexander V. Chernikov memcpy(eh->ether_shost, IF_LLADDR(ifp), ETHER_ADDR_LEN); 1964fb3a820SAlexander V. Chernikov req->bufsize = sizeof(struct ether_header); 1974fb3a820SAlexander V. Chernikov 1984fb3a820SAlexander V. Chernikov return (0); 1994fb3a820SAlexander V. Chernikov } 2004fb3a820SAlexander V. Chernikov 2014fb3a820SAlexander V. Chernikov 2024fb3a820SAlexander V. Chernikov static int 2034fb3a820SAlexander V. Chernikov ether_resolve_addr(struct ifnet *ifp, struct mbuf *m, 2044fb3a820SAlexander V. Chernikov const struct sockaddr *dst, struct route *ro, u_char *phdr, 2056d768226SGeorge V. Neville-Neil uint32_t *pflags, struct llentry **plle) 2064fb3a820SAlexander V. Chernikov { 2074fb3a820SAlexander V. Chernikov struct ether_header *eh; 2084fb3a820SAlexander V. Chernikov uint32_t lleflags = 0; 2094fb3a820SAlexander V. Chernikov int error = 0; 2104fb3a820SAlexander V. Chernikov #if defined(INET) || defined(INET6) 2114fb3a820SAlexander V. Chernikov uint16_t etype; 2124fb3a820SAlexander V. Chernikov #endif 2134fb3a820SAlexander V. Chernikov 2146d768226SGeorge V. Neville-Neil if (plle) 2156d768226SGeorge V. Neville-Neil *plle = NULL; 2164fb3a820SAlexander V. Chernikov eh = (struct ether_header *)phdr; 2174fb3a820SAlexander V. Chernikov 2184fb3a820SAlexander V. Chernikov switch (dst->sa_family) { 2194fb3a820SAlexander V. Chernikov #ifdef INET 2204fb3a820SAlexander V. Chernikov case AF_INET: 2214fb3a820SAlexander V. Chernikov if ((m->m_flags & (M_BCAST | M_MCAST)) == 0) 2226d768226SGeorge V. Neville-Neil error = arpresolve(ifp, 0, m, dst, phdr, &lleflags, 2236d768226SGeorge V. Neville-Neil plle); 2244fb3a820SAlexander V. Chernikov else { 2254fb3a820SAlexander V. Chernikov if (m->m_flags & M_BCAST) 2264fb3a820SAlexander V. Chernikov memcpy(eh->ether_dhost, ifp->if_broadcastaddr, 2274fb3a820SAlexander V. Chernikov ETHER_ADDR_LEN); 2284fb3a820SAlexander V. Chernikov else { 2294fb3a820SAlexander V. Chernikov const struct in_addr *a; 2304fb3a820SAlexander V. Chernikov a = &(((const struct sockaddr_in *)dst)->sin_addr); 2314fb3a820SAlexander V. Chernikov ETHER_MAP_IP_MULTICAST(a, eh->ether_dhost); 2324fb3a820SAlexander V. Chernikov } 2334fb3a820SAlexander V. Chernikov etype = htons(ETHERTYPE_IP); 2344fb3a820SAlexander V. Chernikov memcpy(&eh->ether_type, &etype, sizeof(etype)); 2354fb3a820SAlexander V. Chernikov memcpy(eh->ether_shost, IF_LLADDR(ifp), ETHER_ADDR_LEN); 2364fb3a820SAlexander V. Chernikov } 2374fb3a820SAlexander V. Chernikov break; 2384fb3a820SAlexander V. Chernikov #endif 2394fb3a820SAlexander V. Chernikov #ifdef INET6 2404fb3a820SAlexander V. Chernikov case AF_INET6: 2414fb3a820SAlexander V. Chernikov if ((m->m_flags & M_MCAST) == 0) 2426d768226SGeorge V. Neville-Neil error = nd6_resolve(ifp, 0, m, dst, phdr, &lleflags, 2436d768226SGeorge V. Neville-Neil plle); 2444fb3a820SAlexander V. Chernikov else { 2454fb3a820SAlexander V. Chernikov const struct in6_addr *a6; 2464fb3a820SAlexander V. Chernikov a6 = &(((const struct sockaddr_in6 *)dst)->sin6_addr); 2474fb3a820SAlexander V. Chernikov ETHER_MAP_IPV6_MULTICAST(a6, eh->ether_dhost); 2484fb3a820SAlexander V. Chernikov etype = htons(ETHERTYPE_IPV6); 2494fb3a820SAlexander V. Chernikov memcpy(&eh->ether_type, &etype, sizeof(etype)); 2504fb3a820SAlexander V. Chernikov memcpy(eh->ether_shost, IF_LLADDR(ifp), ETHER_ADDR_LEN); 2514fb3a820SAlexander V. Chernikov } 2524fb3a820SAlexander V. Chernikov break; 2534fb3a820SAlexander V. Chernikov #endif 2544fb3a820SAlexander V. Chernikov default: 2554fb3a820SAlexander V. Chernikov if_printf(ifp, "can't handle af%d\n", dst->sa_family); 2564fb3a820SAlexander V. Chernikov if (m != NULL) 2574fb3a820SAlexander V. Chernikov m_freem(m); 2584fb3a820SAlexander V. Chernikov return (EAFNOSUPPORT); 2594fb3a820SAlexander V. Chernikov } 2604fb3a820SAlexander V. Chernikov 2614fb3a820SAlexander V. Chernikov if (error == EHOSTDOWN) { 26236402a68SAlexander V. Chernikov if (ro != NULL && (ro->ro_flags & RT_HAS_GW) != 0) 2634fb3a820SAlexander V. Chernikov error = EHOSTUNREACH; 2644fb3a820SAlexander V. Chernikov } 2654fb3a820SAlexander V. Chernikov 2664fb3a820SAlexander V. Chernikov if (error != 0) 2674fb3a820SAlexander V. Chernikov return (error); 2684fb3a820SAlexander V. Chernikov 2694fb3a820SAlexander V. Chernikov *pflags = RT_MAY_LOOP; 2704fb3a820SAlexander V. Chernikov if (lleflags & LLE_IFADDR) 2714fb3a820SAlexander V. Chernikov *pflags |= RT_L2_ME; 2724fb3a820SAlexander V. Chernikov 2734fb3a820SAlexander V. Chernikov return (0); 2744fb3a820SAlexander V. Chernikov } 2754fb3a820SAlexander V. Chernikov 2764fb3a820SAlexander V. Chernikov /* 277df8bae1dSRodney W. Grimes * Ethernet output routine. 278df8bae1dSRodney W. Grimes * Encapsulate a packet of type family for the local net. 279df8bae1dSRodney W. Grimes * Use trailer local net encapsulation if enough data in first 280df8bae1dSRodney W. Grimes * packet leaves a multiple of 512 bytes of data in remainder. 281df8bae1dSRodney W. Grimes */ 282df8bae1dSRodney W. Grimes int 28372fd1b6aSDag-Erling Smørgrav ether_output(struct ifnet *ifp, struct mbuf *m, 28447e8d432SGleb Smirnoff const struct sockaddr *dst, struct route *ro) 285df8bae1dSRodney W. Grimes { 2864fb3a820SAlexander V. Chernikov int error = 0; 2874fb3a820SAlexander V. Chernikov char linkhdr[ETHER_HDR_LEN], *phdr; 288098a8c3bSMatthew N. Dodd struct ether_header *eh; 28960ee3847SMax Laier struct pf_mtag *t; 290c54c76ccSOleg Bulyzhin int loop_copy = 1; 291d32864c3SRobert Watson int hlen; /* link layer header length */ 2924fb3a820SAlexander V. Chernikov uint32_t pflags; 2936d768226SGeorge V. Neville-Neil struct llentry *lle = NULL; 2946d768226SGeorge V. Neville-Neil int addref = 0; 295df8bae1dSRodney W. Grimes 2964fb3a820SAlexander V. Chernikov phdr = NULL; 2974fb3a820SAlexander V. Chernikov pflags = 0; 298279aa3d4SKip Macy if (ro != NULL) { 2996d768226SGeorge V. Neville-Neil /* XXX BPF uses ro_prepend */ 3006d768226SGeorge V. Neville-Neil if (ro->ro_prepend != NULL) { 3014fb3a820SAlexander V. Chernikov phdr = ro->ro_prepend; 3024fb3a820SAlexander V. Chernikov hlen = ro->ro_plen; 3036d768226SGeorge V. Neville-Neil } else if (!(m->m_flags & (M_BCAST | M_MCAST))) { 3046d768226SGeorge V. Neville-Neil if ((ro->ro_flags & RT_LLE_CACHE) != 0) { 3056d768226SGeorge V. Neville-Neil lle = ro->ro_lle; 3066d768226SGeorge V. Neville-Neil if (lle != NULL && 3076d768226SGeorge V. Neville-Neil (lle->la_flags & LLE_VALID) == 0) { 3086d768226SGeorge V. Neville-Neil LLE_FREE(lle); 3096d768226SGeorge V. Neville-Neil lle = NULL; /* redundant */ 3106d768226SGeorge V. Neville-Neil ro->ro_lle = NULL; 311279aa3d4SKip Macy } 3126d768226SGeorge V. Neville-Neil if (lle == NULL) { 3136d768226SGeorge V. Neville-Neil /* if we lookup, keep cache */ 3146d768226SGeorge V. Neville-Neil addref = 1; 3151435dcd9SAlexander V. Chernikov } else 3161435dcd9SAlexander V. Chernikov /* 3171435dcd9SAlexander V. Chernikov * Notify LLE code that 3181435dcd9SAlexander V. Chernikov * the entry was used 3191435dcd9SAlexander V. Chernikov * by datapath. 3201435dcd9SAlexander V. Chernikov */ 3211435dcd9SAlexander V. Chernikov llentry_mark_used(lle); 3226d768226SGeorge V. Neville-Neil } 3236d768226SGeorge V. Neville-Neil if (lle != NULL) { 3246d768226SGeorge V. Neville-Neil phdr = lle->r_linkdata; 3256d768226SGeorge V. Neville-Neil hlen = lle->r_hdrlen; 3266d768226SGeorge V. Neville-Neil pflags = lle->r_flags; 3276d768226SGeorge V. Neville-Neil } 3286d768226SGeorge V. Neville-Neil } 3296d768226SGeorge V. Neville-Neil } 3306d768226SGeorge V. Neville-Neil 33143b29369SRobert Watson #ifdef MAC 33230d239bcSRobert Watson error = mac_ifnet_check_transmit(ifp, m); 33343b29369SRobert Watson if (error) 33443b29369SRobert Watson senderr(error); 33543b29369SRobert Watson #endif 33643b29369SRobert Watson 3376eeac1d9SJulian Elischer M_PROFILE(m); 338afbe3a0fSPoul-Henning Kamp if (ifp->if_flags & IFF_MONITOR) 339afbe3a0fSPoul-Henning Kamp senderr(ENETDOWN); 34013f4c340SRobert Watson if (!((ifp->if_flags & IFF_UP) && 34113f4c340SRobert Watson (ifp->if_drv_flags & IFF_DRV_RUNNING))) 342df8bae1dSRodney W. Grimes senderr(ENETDOWN); 3437f760c48SMatthew N. Dodd 3444fb3a820SAlexander V. Chernikov if (phdr == NULL) { 3454fb3a820SAlexander V. Chernikov /* No prepend data supplied. Try to calculate ourselves. */ 3464fb3a820SAlexander V. Chernikov phdr = linkhdr; 34784dd0fd0SJulian Elischer hlen = ETHER_HDR_LEN; 3486d768226SGeorge V. Neville-Neil error = ether_resolve_addr(ifp, m, dst, ro, phdr, &pflags, 3496d768226SGeorge V. Neville-Neil addref ? &lle : NULL); 3506d768226SGeorge V. Neville-Neil if (addref && lle != NULL) 3516d768226SGeorge V. Neville-Neil ro->ro_lle = lle; 3524fb3a820SAlexander V. Chernikov if (error != 0) 353cd46a114SLuigi Rizzo return (error == EWOULDBLOCK ? 0 : error); 35443a6c75aSMatthew N. Dodd } 35543a6c75aSMatthew N. Dodd 3564fb3a820SAlexander V. Chernikov if ((pflags & RT_L2_ME) != 0) { 35722f8ce43SAlexander V. Chernikov update_mbuf_csumflags(m, m); 3586e6b3f7cSQing Li return (if_simloop(ifp, m, dst->sa_family, 0)); 3596e6b3f7cSQing Li } 3604fb3a820SAlexander V. Chernikov loop_copy = pflags & RT_MAY_LOOP; 3616e6b3f7cSQing Li 362df8bae1dSRodney W. Grimes /* 363df8bae1dSRodney W. Grimes * Add local net header. If no space in first mbuf, 364df8bae1dSRodney W. Grimes * allocate another. 3656cdb1854SAlexander V. Chernikov * 3666cdb1854SAlexander V. Chernikov * Note that we do prepend regardless of RT_HAS_HEADER flag. 3676cdb1854SAlexander V. Chernikov * This is done because BPF code shifts m_data pointer 3686cdb1854SAlexander V. Chernikov * to the end of ethernet header prior to calling if_output(). 369df8bae1dSRodney W. Grimes */ 3704fb3a820SAlexander V. Chernikov M_PREPEND(m, hlen, M_NOWAIT); 3712166ffe8SRobert Watson if (m == NULL) 372df8bae1dSRodney W. Grimes senderr(ENOBUFS); 3734fb3a820SAlexander V. Chernikov if ((pflags & RT_HAS_HEADER) == 0) { 374df8bae1dSRodney W. Grimes eh = mtod(m, struct ether_header *); 3754fb3a820SAlexander V. Chernikov memcpy(eh, phdr, hlen); 376c69aeaadSAlexander V. Chernikov } 377ed7509acSJulian Elischer 378ed7509acSJulian Elischer /* 379ed7509acSJulian Elischer * If a simplex interface, and the packet is being sent to our 380ed7509acSJulian Elischer * Ethernet address or a broadcast address, loopback a copy. 381ed7509acSJulian Elischer * XXX To make a simplex device behave exactly like a duplex 382ed7509acSJulian Elischer * device, we should copy in the case of sending to our own 383ed7509acSJulian Elischer * ethernet address (thus letting the original actually appear 384ed7509acSJulian Elischer * on the wire). However, we don't do that here for security 385ed7509acSJulian Elischer * reasons and compatibility with the original behavior. 386ed7509acSJulian Elischer */ 3874fb3a820SAlexander V. Chernikov if ((m->m_flags & M_BCAST) && loop_copy && (ifp->if_flags & IFF_SIMPLEX) && 38860ee3847SMax Laier ((t = pf_find_mtag(m)) == NULL || !t->routed)) { 38906f684b0SMatthew N. Dodd struct mbuf *n; 390ed7509acSJulian Elischer 391294dd290SLuigi Rizzo /* 392294dd290SLuigi Rizzo * Because if_simloop() modifies the packet, we need a 393294dd290SLuigi Rizzo * writable copy through m_dup() instead of a readonly 394294dd290SLuigi Rizzo * one as m_copy[m] would give us. The alternative would 395294dd290SLuigi Rizzo * be to modify if_simloop() to handle the readonly mbuf, 396294dd290SLuigi Rizzo * but performancewise it is mostly equivalent (trading 397294dd290SLuigi Rizzo * extra data copying vs. extra locking). 3989983b3c0SYaroslav Tykhiy * 3999983b3c0SYaroslav Tykhiy * XXX This is a local workaround. A number of less 4009983b3c0SYaroslav Tykhiy * often used kernel parts suffer from the same bug. 4019983b3c0SYaroslav Tykhiy * See PR kern/105943 for a proposed general solution. 402294dd290SLuigi Rizzo */ 403eb1b1807SGleb Smirnoff if ((n = m_dup(m, M_NOWAIT)) != NULL) { 40422f8ce43SAlexander V. Chernikov update_mbuf_csumflags(m, n); 40506a429a3SArchie Cobbs (void)if_simloop(ifp, n, dst->sa_family, hlen); 406c1404dc0SArchie Cobbs } else 4073751dddbSGleb Smirnoff if_inc_counter(ifp, IFCOUNTER_IQDROPS, 1); 408ed7509acSJulian Elischer } 4092e2de7f2SArchie Cobbs 4103f7d1396SAndrew Thompson /* 4113f7d1396SAndrew Thompson * Bridges require special output handling. 4123f7d1396SAndrew Thompson */ 4133f7d1396SAndrew Thompson if (ifp->if_bridge) { 4143f7d1396SAndrew Thompson BRIDGE_OUTPUT(ifp, m, error); 4153f7d1396SAndrew Thompson return (error); 4163f7d1396SAndrew Thompson } 4173f7d1396SAndrew Thompson 418259d2d54SBjoern A. Zeeb #if defined(INET) || defined(INET6) 419a9771948SGleb Smirnoff if (ifp->if_carp && 42008b68b0eSGleb Smirnoff (error = (*carp_output_p)(ifp, m, dst))) 421a9771948SGleb Smirnoff goto bad; 422a9771948SGleb Smirnoff #endif 423a9771948SGleb Smirnoff 424e1e1452dSArchie Cobbs /* Handle ng_ether(4) processing, if any */ 425833e8dc5SGleb Smirnoff if (ifp->if_l2com != NULL) { 426514bcb89SPoul-Henning Kamp KASSERT(ng_ether_output_p != NULL, 427514bcb89SPoul-Henning Kamp ("ng_ether_output_p is NULL")); 428e1e1452dSArchie Cobbs if ((error = (*ng_ether_output_p)(ifp, &m)) != 0) { 429e1e1452dSArchie Cobbs bad: if (m != NULL) 430e1e1452dSArchie Cobbs m_freem(m); 431e1e1452dSArchie Cobbs return (error); 432e1e1452dSArchie Cobbs } 433e1e1452dSArchie Cobbs if (m == NULL) 434e1e1452dSArchie Cobbs return (0); 435e1e1452dSArchie Cobbs } 436e1e1452dSArchie Cobbs 437e1e1452dSArchie Cobbs /* Continue with link-layer output */ 438e1e1452dSArchie Cobbs return ether_output_frame(ifp, m); 439e1e1452dSArchie Cobbs } 440e1e1452dSArchie Cobbs 441f1379734SKonstantin Belousov static bool 442f1379734SKonstantin Belousov ether_set_pcp(struct mbuf **mp, struct ifnet *ifp, uint8_t pcp) 443f1379734SKonstantin Belousov { 444f1379734SKonstantin Belousov struct ether_header *eh; 445f1379734SKonstantin Belousov 446f1379734SKonstantin Belousov eh = mtod(*mp, struct ether_header *); 447f1379734SKonstantin Belousov if (ntohs(eh->ether_type) == ETHERTYPE_VLAN || 448f1379734SKonstantin Belousov ether_8021q_frame(mp, ifp, ifp, 0, pcp)) 449f1379734SKonstantin Belousov return (true); 450f1379734SKonstantin Belousov if_inc_counter(ifp, IFCOUNTER_OERRORS, 1); 451f1379734SKonstantin Belousov return (false); 452f1379734SKonstantin Belousov } 453f1379734SKonstantin Belousov 454e1e1452dSArchie Cobbs /* 455e1e1452dSArchie Cobbs * Ethernet link layer output routine to send a raw frame to the device. 456e1e1452dSArchie Cobbs * 457e1e1452dSArchie Cobbs * This assumes that the 14 byte Ethernet header is present and contiguous 458e1e1452dSArchie Cobbs * in the first mbuf (if BRIDGE'ing). 459e1e1452dSArchie Cobbs */ 460e1e1452dSArchie Cobbs int 461c1d93b05SSam Leffler ether_output_frame(struct ifnet *ifp, struct mbuf *m) 462e1e1452dSArchie Cobbs { 463f1379734SKonstantin Belousov int error; 464f1379734SKonstantin Belousov uint8_t pcp; 465f1379734SKonstantin Belousov 466f1379734SKonstantin Belousov pcp = ifp->if_pcp; 467f1379734SKonstantin Belousov if (pcp != IFNET_PCP_NONE && !ether_set_pcp(&m, ifp, pcp)) 468f1379734SKonstantin Belousov return (0); 4692b25acc1SLuigi Rizzo 4707d4317bdSAlexander V. Chernikov if (PFIL_HOOKED(&V_link_pfil_hook)) { 471f1379734SKonstantin Belousov error = pfil_run_hooks(&V_link_pfil_hook, &m, ifp, 472f1379734SKonstantin Belousov PFIL_OUT, 0, NULL); 473f1379734SKonstantin Belousov if (error != 0) 4747d4317bdSAlexander V. Chernikov return (EACCES); 4757d4317bdSAlexander V. Chernikov 4767d4317bdSAlexander V. Chernikov if (m == NULL) 4777d4317bdSAlexander V. Chernikov return (0); 4784b984093SLuigi Rizzo } 4792b25acc1SLuigi Rizzo 480df8bae1dSRodney W. Grimes /* 481df5e1987SJonathan Lemon * Queue message on interface, update output statistics if 482df5e1987SJonathan Lemon * successful, and start output if interface not yet active. 483df8bae1dSRodney W. Grimes */ 484aea78d20SKip Macy return ((ifp->if_transmit)(ifp, m)); 485df8bae1dSRodney W. Grimes } 486df8bae1dSRodney W. Grimes 4874b984093SLuigi Rizzo /* 488c1d93b05SSam Leffler * Process a received Ethernet packet; the packet is in the 489c1d93b05SSam Leffler * mbuf chain m with the ethernet header at the front. 490df8bae1dSRodney W. Grimes */ 491c1d93b05SSam Leffler static void 4926cb52192SRobert Watson ether_input_internal(struct ifnet *ifp, struct mbuf *m) 493df8bae1dSRodney W. Grimes { 494c1d93b05SSam Leffler struct ether_header *eh; 495c1d93b05SSam Leffler u_short etype; 496df8bae1dSRodney W. Grimes 49769462a82SBruce M Simpson if ((ifp->if_flags & IFF_UP) == 0) { 49869462a82SBruce M Simpson m_freem(m); 49969462a82SBruce M Simpson return; 50069462a82SBruce M Simpson } 50169462a82SBruce M Simpson #ifdef DIAGNOSTIC 50269462a82SBruce M Simpson if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0) { 50369462a82SBruce M Simpson if_printf(ifp, "discard frame at !IFF_DRV_RUNNING\n"); 50469462a82SBruce M Simpson m_freem(m); 50569462a82SBruce M Simpson return; 50669462a82SBruce M Simpson } 50769462a82SBruce M Simpson #endif 508797f247bSMatthew N. Dodd if (m->m_len < ETHER_HDR_LEN) { 509c1d93b05SSam Leffler /* XXX maybe should pullup? */ 510c1d93b05SSam Leffler if_printf(ifp, "discard frame w/o leading ethernet " 511c1d93b05SSam Leffler "header (len %u pkt len %u)\n", 512c1d93b05SSam Leffler m->m_len, m->m_pkthdr.len); 5133751dddbSGleb Smirnoff if_inc_counter(ifp, IFCOUNTER_IERRORS, 1); 514c1d93b05SSam Leffler m_freem(m); 515c1d93b05SSam Leffler return; 5162e2de7f2SArchie Cobbs } 517c1d93b05SSam Leffler eh = mtod(m, struct ether_header *); 518c1d93b05SSam Leffler etype = ntohs(eh->ether_type); 519d1b06863SMark Murray random_harvest_queue(m, sizeof(*m), 2, RANDOM_NET_ETHER); 520d1b06863SMark Murray 52121ca7b57SMarko Zec CURVNET_SET_QUIET(ifp->if_vnet); 52221ca7b57SMarko Zec 52369462a82SBruce M Simpson if (ETHER_IS_MULTICAST(eh->ether_dhost)) { 52469462a82SBruce M Simpson if (ETHER_IS_BROADCAST(eh->ether_dhost)) 52569462a82SBruce M Simpson m->m_flags |= M_BCAST; 52669462a82SBruce M Simpson else 52769462a82SBruce M Simpson m->m_flags |= M_MCAST; 5283751dddbSGleb Smirnoff if_inc_counter(ifp, IFCOUNTER_IMCASTS, 1); 52969462a82SBruce M Simpson } 53069462a82SBruce M Simpson 531533d8562SRobert Watson #ifdef MAC 532533d8562SRobert Watson /* 533533d8562SRobert Watson * Tag the mbuf with an appropriate MAC label before any other 534533d8562SRobert Watson * consumers can get to it. 535533d8562SRobert Watson */ 53630d239bcSRobert Watson mac_ifnet_create_mbuf(ifp, m); 537533d8562SRobert Watson #endif 538533d8562SRobert Watson 539c1d93b05SSam Leffler /* 54069462a82SBruce M Simpson * Give bpf a chance at the packet. 541c1d93b05SSam Leffler */ 542d05d4616SChristian S.J. Peron ETHER_BPF_MTAP(ifp, m); 5432e2de7f2SArchie Cobbs 54469462a82SBruce M Simpson /* 54569462a82SBruce M Simpson * If the CRC is still on the packet, trim it off. We do this once 54669462a82SBruce M Simpson * and once only in case we are re-entered. Nothing else on the 54769462a82SBruce M Simpson * Ethernet receive path expects to see the FCS. 54869462a82SBruce M Simpson */ 549c1d93b05SSam Leffler if (m->m_flags & M_HASFCS) { 550c1d93b05SSam Leffler m_adj(m, -ETHER_CRC_LEN); 551c1d93b05SSam Leffler m->m_flags &= ~M_HASFCS; 552c1d93b05SSam Leffler } 553c1d93b05SSam Leffler 5544cdc1f54SGleb Smirnoff if (!(ifp->if_capenable & IFCAP_HWSTATS)) 5553751dddbSGleb Smirnoff if_inc_counter(ifp, IFCOUNTER_IBYTES, m->m_pkthdr.len); 55605463bb5SDavid Greenman 55769462a82SBruce M Simpson /* Allow monitor mode to claim this frame, after stats are updated. */ 558de572b37SChristian S.J. Peron if (ifp->if_flags & IFF_MONITOR) { 559de572b37SChristian S.J. Peron m_freem(m); 56021ca7b57SMarko Zec CURVNET_RESTORE(); 561de572b37SChristian S.J. Peron return; 562de572b37SChristian S.J. Peron } 563de572b37SChristian S.J. Peron 56418242d3bSAndrew Thompson /* Handle input from a lagg(4) port */ 565b47888ceSAndrew Thompson if (ifp->if_type == IFT_IEEE8023ADLAG) { 56618242d3bSAndrew Thompson KASSERT(lagg_input_p != NULL, 56718242d3bSAndrew Thompson ("%s: if_lagg not loaded!", __func__)); 56818242d3bSAndrew Thompson m = (*lagg_input_p)(ifp, m); 569b47888ceSAndrew Thompson if (m != NULL) 570b47888ceSAndrew Thompson ifp = m->m_pkthdr.rcvif; 5712db13e75SMarko Zec else { 5722db13e75SMarko Zec CURVNET_RESTORE(); 573b47888ceSAndrew Thompson return; 574b47888ceSAndrew Thompson } 5752db13e75SMarko Zec } 576b47888ceSAndrew Thompson 57769462a82SBruce M Simpson /* 57869462a82SBruce M Simpson * If the hardware did not process an 802.1Q tag, do this now, 57969462a82SBruce M Simpson * to allow 802.1P priority frames to be passed to the main input 58069462a82SBruce M Simpson * path correctly. 58169462a82SBruce M Simpson * TODO: Deal with Q-in-Q frames, but not arbitrary nesting levels. 58269462a82SBruce M Simpson */ 58369462a82SBruce M Simpson if ((m->m_flags & M_VLANTAG) == 0 && etype == ETHERTYPE_VLAN) { 58469462a82SBruce M Simpson struct ether_vlan_header *evl; 58569462a82SBruce M Simpson 58669462a82SBruce M Simpson if (m->m_len < sizeof(*evl) && 58769462a82SBruce M Simpson (m = m_pullup(m, sizeof(*evl))) == NULL) { 588402d5e27SBruce M Simpson #ifdef DIAGNOSTIC 58969462a82SBruce M Simpson if_printf(ifp, "cannot pullup VLAN header\n"); 590402d5e27SBruce M Simpson #endif 5913751dddbSGleb Smirnoff if_inc_counter(ifp, IFCOUNTER_IERRORS, 1); 5922db13e75SMarko Zec CURVNET_RESTORE(); 59369462a82SBruce M Simpson return; 59469462a82SBruce M Simpson } 59569462a82SBruce M Simpson 59669462a82SBruce M Simpson evl = mtod(m, struct ether_vlan_header *); 59769462a82SBruce M Simpson m->m_pkthdr.ether_vtag = ntohs(evl->evl_tag); 59869462a82SBruce M Simpson m->m_flags |= M_VLANTAG; 59969462a82SBruce M Simpson 60069462a82SBruce M Simpson bcopy((char *)evl, (char *)evl + ETHER_VLAN_ENCAP_LEN, 60169462a82SBruce M Simpson ETHER_HDR_LEN - ETHER_TYPE_LEN); 60269462a82SBruce M Simpson m_adj(m, ETHER_VLAN_ENCAP_LEN); 60397cce87fSGleb Smirnoff eh = mtod(m, struct ether_header *); 60469462a82SBruce M Simpson } 60569462a82SBruce M Simpson 606a34c6aebSBjoern A. Zeeb M_SETFIB(m, ifp->if_fib); 607a34c6aebSBjoern A. Zeeb 60869462a82SBruce M Simpson /* Allow ng_ether(4) to claim this frame. */ 609833e8dc5SGleb Smirnoff if (ifp->if_l2com != NULL) { 610514bcb89SPoul-Henning Kamp KASSERT(ng_ether_input_p != NULL, 61169462a82SBruce M Simpson ("%s: ng_ether_input_p is NULL", __func__)); 61269462a82SBruce M Simpson m->m_flags &= ~M_PROMISC; 613c1d93b05SSam Leffler (*ng_ether_input_p)(ifp, &m); 61421ca7b57SMarko Zec if (m == NULL) { 61521ca7b57SMarko Zec CURVNET_RESTORE(); 616e1e1452dSArchie Cobbs return; 617e1e1452dSArchie Cobbs } 6185e9a5429SGleb Smirnoff eh = mtod(m, struct ether_header *); 61921ca7b57SMarko Zec } 620e1e1452dSArchie Cobbs 6218f867517SAndrew Thompson /* 62269462a82SBruce M Simpson * Allow if_bridge(4) to claim this frame. 62369462a82SBruce M Simpson * The BRIDGE_INPUT() macro will update ifp if the bridge changed it 62469462a82SBruce M Simpson * and the frame should be delivered locally. 6258f867517SAndrew Thompson */ 62669462a82SBruce M Simpson if (ifp->if_bridge != NULL) { 62769462a82SBruce M Simpson m->m_flags &= ~M_PROMISC; 628fd6238a6SAndrew Thompson BRIDGE_INPUT(ifp, m); 62921ca7b57SMarko Zec if (m == NULL) { 63021ca7b57SMarko Zec CURVNET_RESTORE(); 6318f867517SAndrew Thompson return; 6328f867517SAndrew Thompson } 6335e9a5429SGleb Smirnoff eh = mtod(m, struct ether_header *); 63421ca7b57SMarko Zec } 6358f867517SAndrew Thompson 636259d2d54SBjoern A. Zeeb #if defined(INET) || defined(INET6) 63769462a82SBruce M Simpson /* 63869462a82SBruce M Simpson * Clear M_PROMISC on frame so that carp(4) will see it when the 63969462a82SBruce M Simpson * mbuf flows up to Layer 3. 64069462a82SBruce M Simpson * FreeBSD's implementation of carp(4) uses the inprotosw 64169462a82SBruce M Simpson * to dispatch IPPROTO_CARP. carp(4) also allocates its own 64269462a82SBruce M Simpson * Ethernet addresses of the form 00:00:5e:00:01:xx, which 64369462a82SBruce M Simpson * is outside the scope of the M_PROMISC test below. 64469462a82SBruce M Simpson * TODO: Maintain a hash table of ethernet addresses other than 64569462a82SBruce M Simpson * ether_dhost which may be active on this ifp. 64669462a82SBruce M Simpson */ 64754bfbd51SWill Andrews if (ifp->if_carp && (*carp_forus_p)(ifp, eh->ether_dhost)) { 64869462a82SBruce M Simpson m->m_flags &= ~M_PROMISC; 64969462a82SBruce M Simpson } else 65069462a82SBruce M Simpson #endif 65169462a82SBruce M Simpson { 65269462a82SBruce M Simpson /* 653e7f8c833SBruce M Simpson * If the frame received was not for our MAC address, set the 65469462a82SBruce M Simpson * M_PROMISC flag on the mbuf chain. The frame may need to 65569462a82SBruce M Simpson * be seen by the rest of the Ethernet input path in case of 65669462a82SBruce M Simpson * re-entry (e.g. bridge, vlan, netgraph) but should not be 65769462a82SBruce M Simpson * seen by upper protocol layers. 65869462a82SBruce M Simpson */ 65969462a82SBruce M Simpson if (!ETHER_IS_MULTICAST(eh->ether_dhost) && 660e7f8c833SBruce M Simpson bcmp(IF_LLADDR(ifp), eh->ether_dhost, ETHER_ADDR_LEN) != 0) 66169462a82SBruce M Simpson m->m_flags |= M_PROMISC; 66269462a82SBruce M Simpson } 66369462a82SBruce M Simpson 664acf032f5SRobert Watson ether_demux(ifp, m); 66521ca7b57SMarko Zec CURVNET_RESTORE(); 666e1e1452dSArchie Cobbs } 667e1e1452dSArchie Cobbs 668e1e1452dSArchie Cobbs /* 6696cb52192SRobert Watson * Ethernet input dispatch; by default, direct dispatch here regardless of 6707527624eSRobert Watson * global configuration. However, if RSS is enabled, hook up RSS affinity 6717527624eSRobert Watson * so that when deferred or hybrid dispatch is enabled, we can redistribute 6727527624eSRobert Watson * load based on RSS. 6737527624eSRobert Watson * 6747527624eSRobert Watson * XXXRW: Would be nice if the ifnet passed up a flag indicating whether or 6757527624eSRobert Watson * not it had already done work distribution via multi-queue. Then we could 6767527624eSRobert Watson * direct dispatch in the event load balancing was already complete and 6777527624eSRobert Watson * handle the case of interfaces with different capabilities better. 6787527624eSRobert Watson * 6797527624eSRobert Watson * XXXRW: Sort of want an M_DISTRIBUTED flag to avoid multiple distributions 6807527624eSRobert Watson * at multiple layers? 6817527624eSRobert Watson * 6827527624eSRobert Watson * XXXRW: For now, enable all this only if RSS is compiled in, although it 6837527624eSRobert Watson * works fine without RSS. Need to characterise the performance overhead 6847527624eSRobert Watson * of the detour through the netisr code in the event the result is always 6857527624eSRobert Watson * direct dispatch. 6866cb52192SRobert Watson */ 6876cb52192SRobert Watson static void 6886cb52192SRobert Watson ether_nh_input(struct mbuf *m) 6896cb52192SRobert Watson { 6906cb52192SRobert Watson 691b71bed24SAndrey V. Elsukov M_ASSERTPKTHDR(m); 692b71bed24SAndrey V. Elsukov KASSERT(m->m_pkthdr.rcvif != NULL, 693b71bed24SAndrey V. Elsukov ("%s: NULL interface pointer", __func__)); 6946cb52192SRobert Watson ether_input_internal(m->m_pkthdr.rcvif, m); 6956cb52192SRobert Watson } 6966cb52192SRobert Watson 6976cb52192SRobert Watson static struct netisr_handler ether_nh = { 6986cb52192SRobert Watson .nh_name = "ether", 6996cb52192SRobert Watson .nh_handler = ether_nh_input, 7006cb52192SRobert Watson .nh_proto = NETISR_ETHER, 7017527624eSRobert Watson #ifdef RSS 7027527624eSRobert Watson .nh_policy = NETISR_POLICY_CPU, 7037527624eSRobert Watson .nh_dispatch = NETISR_DISPATCH_DIRECT, 7047527624eSRobert Watson .nh_m2cpuid = rss_m2cpuid, 7057527624eSRobert Watson #else 7066cb52192SRobert Watson .nh_policy = NETISR_POLICY_SOURCE, 7076cb52192SRobert Watson .nh_dispatch = NETISR_DISPATCH_DIRECT, 7087527624eSRobert Watson #endif 7096cb52192SRobert Watson }; 7106cb52192SRobert Watson 7116cb52192SRobert Watson static void 7126cb52192SRobert Watson ether_init(__unused void *arg) 7136cb52192SRobert Watson { 7146cb52192SRobert Watson 7156cb52192SRobert Watson netisr_register(ðer_nh); 7166cb52192SRobert Watson } 7176cb52192SRobert Watson SYSINIT(ether, SI_SUB_INIT_IF, SI_ORDER_ANY, ether_init, NULL); 7186cb52192SRobert Watson 7196cb52192SRobert Watson static void 7207d4317bdSAlexander V. Chernikov vnet_ether_init(__unused void *arg) 7217d4317bdSAlexander V. Chernikov { 7227d4317bdSAlexander V. Chernikov int i; 7237d4317bdSAlexander V. Chernikov 7247d4317bdSAlexander V. Chernikov /* Initialize packet filter hooks. */ 7257d4317bdSAlexander V. Chernikov V_link_pfil_hook.ph_type = PFIL_TYPE_AF; 7267d4317bdSAlexander V. Chernikov V_link_pfil_hook.ph_af = AF_LINK; 7277d4317bdSAlexander V. Chernikov if ((i = pfil_head_register(&V_link_pfil_hook)) != 0) 7287d4317bdSAlexander V. Chernikov printf("%s: WARNING: unable to register pfil link hook, " 7297d4317bdSAlexander V. Chernikov "error %d\n", __func__, i); 730484149deSBjoern A. Zeeb #ifdef VIMAGE 731484149deSBjoern A. Zeeb netisr_register_vnet(ðer_nh); 732484149deSBjoern A. Zeeb #endif 7337d4317bdSAlexander V. Chernikov } 7347d4317bdSAlexander V. Chernikov VNET_SYSINIT(vnet_ether_init, SI_SUB_PROTO_IF, SI_ORDER_ANY, 7357d4317bdSAlexander V. Chernikov vnet_ether_init, NULL); 7367d4317bdSAlexander V. Chernikov 737484149deSBjoern A. Zeeb #ifdef VIMAGE 7387d4317bdSAlexander V. Chernikov static void 739484149deSBjoern A. Zeeb vnet_ether_pfil_destroy(__unused void *arg) 7407d4317bdSAlexander V. Chernikov { 7417d4317bdSAlexander V. Chernikov int i; 7427d4317bdSAlexander V. Chernikov 7437d4317bdSAlexander V. Chernikov if ((i = pfil_head_unregister(&V_link_pfil_hook)) != 0) 7447d4317bdSAlexander V. Chernikov printf("%s: WARNING: unable to unregister pfil link hook, " 7457d4317bdSAlexander V. Chernikov "error %d\n", __func__, i); 7467d4317bdSAlexander V. Chernikov } 747484149deSBjoern A. Zeeb VNET_SYSUNINIT(vnet_ether_pfil_uninit, SI_SUB_PROTO_PFIL, SI_ORDER_ANY, 748484149deSBjoern A. Zeeb vnet_ether_pfil_destroy, NULL); 749484149deSBjoern A. Zeeb 750484149deSBjoern A. Zeeb static void 751484149deSBjoern A. Zeeb vnet_ether_destroy(__unused void *arg) 752484149deSBjoern A. Zeeb { 753484149deSBjoern A. Zeeb 754484149deSBjoern A. Zeeb netisr_unregister_vnet(ðer_nh); 755484149deSBjoern A. Zeeb } 7567d4317bdSAlexander V. Chernikov VNET_SYSUNINIT(vnet_ether_uninit, SI_SUB_PROTO_IF, SI_ORDER_ANY, 7577d4317bdSAlexander V. Chernikov vnet_ether_destroy, NULL); 758484149deSBjoern A. Zeeb #endif 7597d4317bdSAlexander V. Chernikov 7607d4317bdSAlexander V. Chernikov 7617d4317bdSAlexander V. Chernikov 7627d4317bdSAlexander V. Chernikov static void 7636cb52192SRobert Watson ether_input(struct ifnet *ifp, struct mbuf *m) 7646cb52192SRobert Watson { 7656cb52192SRobert Watson 7664857f5fbSGeorge V. Neville-Neil struct mbuf *mn; 7674857f5fbSGeorge V. Neville-Neil 7684857f5fbSGeorge V. Neville-Neil /* 7694857f5fbSGeorge V. Neville-Neil * The drivers are allowed to pass in a chain of packets linked with 7704857f5fbSGeorge V. Neville-Neil * m_nextpkt. We split them up into separate packets here and pass 7714857f5fbSGeorge V. Neville-Neil * them up. This allows the drivers to amortize the receive lock. 7724857f5fbSGeorge V. Neville-Neil */ 7734857f5fbSGeorge V. Neville-Neil while (m) { 7744857f5fbSGeorge V. Neville-Neil mn = m->m_nextpkt; 7754857f5fbSGeorge V. Neville-Neil m->m_nextpkt = NULL; 7764857f5fbSGeorge V. Neville-Neil 7776cb52192SRobert Watson /* 7786cb52192SRobert Watson * We will rely on rcvif being set properly in the deferred context, 7796cb52192SRobert Watson * so assert it is correct here. 7806cb52192SRobert Watson */ 781e84ef07fSBjoern A. Zeeb KASSERT(m->m_pkthdr.rcvif == ifp, ("%s: ifnet mismatch m %p " 782e84ef07fSBjoern A. Zeeb "rcvif %p ifp %p", __func__, m, m->m_pkthdr.rcvif, ifp)); 783484149deSBjoern A. Zeeb CURVNET_SET_QUIET(ifp->if_vnet); 7846cb52192SRobert Watson netisr_dispatch(NETISR_ETHER, m); 785484149deSBjoern A. Zeeb CURVNET_RESTORE(); 7864857f5fbSGeorge V. Neville-Neil m = mn; 7874857f5fbSGeorge V. Neville-Neil } 7886cb52192SRobert Watson } 7896cb52192SRobert Watson 7906cb52192SRobert Watson /* 791e1e1452dSArchie Cobbs * Upper layer processing for a received Ethernet packet. 792e1e1452dSArchie Cobbs */ 793e1e1452dSArchie Cobbs void 794c1d93b05SSam Leffler ether_demux(struct ifnet *ifp, struct mbuf *m) 795e1e1452dSArchie Cobbs { 796c1d93b05SSam Leffler struct ether_header *eh; 7977d4317bdSAlexander V. Chernikov int i, isr; 798e1e1452dSArchie Cobbs u_short ether_type; 79969462a82SBruce M Simpson 80069462a82SBruce M Simpson KASSERT(ifp != NULL, ("%s: NULL interface pointer", __func__)); 80169462a82SBruce M Simpson 8027d4317bdSAlexander V. Chernikov /* Do not grab PROMISC frames in case we are re-entered. */ 8037d4317bdSAlexander V. Chernikov if (PFIL_HOOKED(&V_link_pfil_hook) && !(m->m_flags & M_PROMISC)) { 804effaab88SKristof Provost i = pfil_run_hooks(&V_link_pfil_hook, &m, ifp, PFIL_IN, 0, 805effaab88SKristof Provost NULL); 8067d4317bdSAlexander V. Chernikov 8077d4317bdSAlexander V. Chernikov if (i != 0 || m == NULL) 8087d4317bdSAlexander V. Chernikov return; 80969462a82SBruce M Simpson } 8107d4317bdSAlexander V. Chernikov 811c1d93b05SSam Leffler eh = mtod(m, struct ether_header *); 812cd0cd014SJoerg Wunsch ether_type = ntohs(eh->ether_type); 813c1d93b05SSam Leffler 814a9771948SGleb Smirnoff /* 81569462a82SBruce M Simpson * If this frame has a VLAN tag other than 0, call vlan_input() 81669462a82SBruce M Simpson * if its module is loaded. Otherwise, drop. 817a9771948SGleb Smirnoff */ 81869462a82SBruce M Simpson if ((m->m_flags & M_VLANTAG) && 81969462a82SBruce M Simpson EVL_VLANOFTAG(m->m_pkthdr.ether_vtag) != 0) { 82075ee267cSGleb Smirnoff if (ifp->if_vlantrunk == NULL) { 8213751dddbSGleb Smirnoff if_inc_counter(ifp, IFCOUNTER_NOPROTO, 1); 8226c23e6ccSRuslan Ermilov m_freem(m); 8236c23e6ccSRuslan Ermilov return; 8246c23e6ccSRuslan Ermilov } 82569462a82SBruce M Simpson KASSERT(vlan_input_p != NULL,("%s: VLAN not loaded!", 82669462a82SBruce M Simpson __func__)); 82769462a82SBruce M Simpson /* Clear before possibly re-entering ether_input(). */ 82869462a82SBruce M Simpson m->m_flags &= ~M_PROMISC; 829c1d93b05SSam Leffler (*vlan_input_p)(ifp, m); 830c1d93b05SSam Leffler return; 831c1d93b05SSam Leffler } 832c1d93b05SSam Leffler 833c1d93b05SSam Leffler /* 83469462a82SBruce M Simpson * Pass promiscuously received frames to the upper layer if the user 83569462a82SBruce M Simpson * requested this by setting IFF_PPROMISC. Otherwise, drop them. 836c1d93b05SSam Leffler */ 83769462a82SBruce M Simpson if ((ifp->if_flags & IFF_PPROMISC) == 0 && (m->m_flags & M_PROMISC)) { 838c1d93b05SSam Leffler m_freem(m); 839c1d93b05SSam Leffler return; 840c1d93b05SSam Leffler } 841c1d93b05SSam Leffler 84269462a82SBruce M Simpson /* 84369462a82SBruce M Simpson * Reset layer specific mbuf flags to avoid confusing upper layers. 84469462a82SBruce M Simpson * Strip off Ethernet header. 84569462a82SBruce M Simpson */ 84669462a82SBruce M Simpson m->m_flags &= ~M_VLANTAG; 84786bd0491SAndre Oppermann m_clrprotoflags(m); 848797f247bSMatthew N. Dodd m_adj(m, ETHER_HDR_LEN); 849c1d93b05SSam Leffler 85069462a82SBruce M Simpson /* 85169462a82SBruce M Simpson * Dispatch frame to upper layer. 85269462a82SBruce M Simpson */ 853307d80beSDavid Greenman switch (ether_type) { 854df8bae1dSRodney W. Grimes #ifdef INET 855df8bae1dSRodney W. Grimes case ETHERTYPE_IP: 8561cafed39SJonathan Lemon isr = NETISR_IP; 857df8bae1dSRodney W. Grimes break; 858df8bae1dSRodney W. Grimes 859df8bae1dSRodney W. Grimes case ETHERTYPE_ARP: 86008aadfbbSJonathan Lemon if (ifp->if_flags & IFF_NOARP) { 86108aadfbbSJonathan Lemon /* Discard packet if ARP is disabled on interface */ 86208aadfbbSJonathan Lemon m_freem(m); 86308aadfbbSJonathan Lemon return; 86408aadfbbSJonathan Lemon } 8651cafed39SJonathan Lemon isr = NETISR_ARP; 866df8bae1dSRodney W. Grimes break; 867df8bae1dSRodney W. Grimes #endif 86882cd038dSYoshinobu Inoue #ifdef INET6 86982cd038dSYoshinobu Inoue case ETHERTYPE_IPV6: 8701cafed39SJonathan Lemon isr = NETISR_IPV6; 87182cd038dSYoshinobu Inoue break; 87282cd038dSYoshinobu Inoue #endif 873df8bae1dSRodney W. Grimes default: 8741cafed39SJonathan Lemon goto discard; 875df8bae1dSRodney W. Grimes } 8761cafed39SJonathan Lemon netisr_dispatch(isr, m); 877c1d93b05SSam Leffler return; 8781cafed39SJonathan Lemon 879c1d93b05SSam Leffler discard: 880c1d93b05SSam Leffler /* 881c1d93b05SSam Leffler * Packet is to be discarded. If netgraph is present, 882c1d93b05SSam Leffler * hand the packet to it for last chance processing; 883c1d93b05SSam Leffler * otherwise dispose of it. 884c1d93b05SSam Leffler */ 885833e8dc5SGleb Smirnoff if (ifp->if_l2com != NULL) { 886514bcb89SPoul-Henning Kamp KASSERT(ng_ether_input_orphan_p != NULL, 887514bcb89SPoul-Henning Kamp ("ng_ether_input_orphan_p is NULL")); 888c1d93b05SSam Leffler /* 889c1d93b05SSam Leffler * Put back the ethernet header so netgraph has a 890c1d93b05SSam Leffler * consistent view of inbound packets. 891c1d93b05SSam Leffler */ 892eb1b1807SGleb Smirnoff M_PREPEND(m, ETHER_HDR_LEN, M_NOWAIT); 893c1d93b05SSam Leffler (*ng_ether_input_orphan_p)(ifp, m); 894c1d93b05SSam Leffler return; 895c1d93b05SSam Leffler } 896c1d93b05SSam Leffler m_freem(m); 897c1d93b05SSam Leffler } 898c1d93b05SSam Leffler 899c1d93b05SSam Leffler /* 900c1d93b05SSam Leffler * Convert Ethernet address to printable (loggable) representation. 901c1d93b05SSam Leffler * This routine is for compatibility; it's better to just use 902c1d93b05SSam Leffler * 903c1d93b05SSam Leffler * printf("%6D", <pointer to address>, ":"); 904c1d93b05SSam Leffler * 905c1d93b05SSam Leffler * since there's no static buffer involved. 906c1d93b05SSam Leffler */ 907c1d93b05SSam Leffler char * 908c1d93b05SSam Leffler ether_sprintf(const u_char *ap) 909c1d93b05SSam Leffler { 910c1d93b05SSam Leffler static char etherbuf[18]; 911c1d93b05SSam Leffler snprintf(etherbuf, sizeof (etherbuf), "%6D", ap, ":"); 912c1d93b05SSam Leffler return (etherbuf); 913df8bae1dSRodney W. Grimes } 914df8bae1dSRodney W. Grimes 915df8bae1dSRodney W. Grimes /* 916df8bae1dSRodney W. Grimes * Perform common duties while attaching to interface list 917df8bae1dSRodney W. Grimes */ 918df8bae1dSRodney W. Grimes void 919d09ed26fSRuslan Ermilov ether_ifattach(struct ifnet *ifp, const u_int8_t *lla) 920df8bae1dSRodney W. Grimes { 921f93dfa28SBrooks Davis int i; 922098a8c3bSMatthew N. Dodd struct ifaddr *ifa; 923098a8c3bSMatthew N. Dodd struct sockaddr_dl *sdl; 924df8bae1dSRodney W. Grimes 925c1d93b05SSam Leffler ifp->if_addrlen = ETHER_ADDR_LEN; 926c1d93b05SSam Leffler ifp->if_hdrlen = ETHER_HDR_LEN; 927cfeff1b6SJonathan Lemon if_attach(ifp); 928df8bae1dSRodney W. Grimes ifp->if_mtu = ETHERMTU; 929c1d93b05SSam Leffler ifp->if_output = ether_output; 930c1d93b05SSam Leffler ifp->if_input = ether_input; 9311158dfb7SGarrett Wollman ifp->if_resolvemulti = ether_resolvemulti; 9324fb3a820SAlexander V. Chernikov ifp->if_requestencap = ether_requestencap; 933d3c351c5SMarko Zec #ifdef VIMAGE 934d3c351c5SMarko Zec ifp->if_reassign = ether_reassign; 935d3c351c5SMarko Zec #endif 936a330e1f1SGary Palmer if (ifp->if_baudrate == 0) 937c1d93b05SSam Leffler ifp->if_baudrate = IF_Mbps(10); /* just a default */ 938322dcb8dSMax Khon ifp->if_broadcastaddr = etherbroadcastaddr; 939c1d93b05SSam Leffler 9404a0d6638SRuslan Ermilov ifa = ifp->if_addr; 9416e551fb6SDavid E. O'Brien KASSERT(ifa != NULL, ("%s: no lladdr!\n", __func__)); 94259562606SGarrett Wollman sdl = (struct sockaddr_dl *)ifa->ifa_addr; 943df8bae1dSRodney W. Grimes sdl->sdl_type = IFT_ETHER; 944df8bae1dSRodney W. Grimes sdl->sdl_alen = ifp->if_addrlen; 945d09ed26fSRuslan Ermilov bcopy(lla, LLADDR(sdl), ifp->if_addrlen); 946c1d93b05SSam Leffler 9475b1a5e45SRavi Pokala if (ifp->if_hw_addr != NULL) 948ddae5750SRavi Pokala bcopy(lla, ifp->if_hw_addr, ifp->if_addrlen); 949ddae5750SRavi Pokala 950797f247bSMatthew N. Dodd bpfattach(ifp, DLT_EN10MB, ETHER_HDR_LEN); 951e1e1452dSArchie Cobbs if (ng_ether_attach_p != NULL) 952e1e1452dSArchie Cobbs (*ng_ether_attach_p)(ifp); 953e3bbbec2SMatthew N. Dodd 954f93dfa28SBrooks Davis /* Announce Ethernet MAC address if non-zero. */ 955f93dfa28SBrooks Davis for (i = 0; i < ifp->if_addrlen; i++) 956d09ed26fSRuslan Ermilov if (lla[i] != 0) 957f93dfa28SBrooks Davis break; 958f93dfa28SBrooks Davis if (i != ifp->if_addrlen) 959d09ed26fSRuslan Ermilov if_printf(ifp, "Ethernet address: %6D\n", lla, ":"); 960ef1f9169SMarcel Moolenaar 961ef1f9169SMarcel Moolenaar uuid_ether_add(LLADDR(sdl)); 9628819ad85SSepherosa Ziehau 9638819ad85SSepherosa Ziehau /* Add necessary bits are setup; announce it now. */ 9648819ad85SSepherosa Ziehau EVENTHANDLER_INVOKE(ether_ifattach_event, ifp); 9658819ad85SSepherosa Ziehau if (IS_DEFAULT_VNET(curvnet)) 9668819ad85SSepherosa Ziehau devctl_notify("ETHERNET", ifp->if_xname, "IFATTACH", NULL); 967e1e1452dSArchie Cobbs } 968e1e1452dSArchie Cobbs 96921b8ebd9SArchie Cobbs /* 97021b8ebd9SArchie Cobbs * Perform common duties while detaching an Ethernet interface 97121b8ebd9SArchie Cobbs */ 97221b8ebd9SArchie Cobbs void 973c1d93b05SSam Leffler ether_ifdetach(struct ifnet *ifp) 97421b8ebd9SArchie Cobbs { 975ef1f9169SMarcel Moolenaar struct sockaddr_dl *sdl; 976ef1f9169SMarcel Moolenaar 977ef1f9169SMarcel Moolenaar sdl = (struct sockaddr_dl *)(ifp->if_addr->ifa_addr); 978ef1f9169SMarcel Moolenaar uuid_ether_del(LLADDR(sdl)); 979ef1f9169SMarcel Moolenaar 980833e8dc5SGleb Smirnoff if (ifp->if_l2com != NULL) { 981514bcb89SPoul-Henning Kamp KASSERT(ng_ether_detach_p != NULL, 982514bcb89SPoul-Henning Kamp ("ng_ether_detach_p is NULL")); 98321b8ebd9SArchie Cobbs (*ng_ether_detach_p)(ifp); 984514bcb89SPoul-Henning Kamp } 98520a65f37SAndrew Thompson 98621b8ebd9SArchie Cobbs bpfdetach(ifp); 98721b8ebd9SArchie Cobbs if_detach(ifp); 98821b8ebd9SArchie Cobbs } 98921b8ebd9SArchie Cobbs 990d3c351c5SMarko Zec #ifdef VIMAGE 991d3c351c5SMarko Zec void 992d3c351c5SMarko Zec ether_reassign(struct ifnet *ifp, struct vnet *new_vnet, char *unused __unused) 993d3c351c5SMarko Zec { 994d3c351c5SMarko Zec 995833e8dc5SGleb Smirnoff if (ifp->if_l2com != NULL) { 996d3c351c5SMarko Zec KASSERT(ng_ether_detach_p != NULL, 997d3c351c5SMarko Zec ("ng_ether_detach_p is NULL")); 998d3c351c5SMarko Zec (*ng_ether_detach_p)(ifp); 999d3c351c5SMarko Zec } 1000d3c351c5SMarko Zec 1001d3c351c5SMarko Zec if (ng_ether_attach_p != NULL) { 1002d3c351c5SMarko Zec CURVNET_SET_QUIET(new_vnet); 1003d3c351c5SMarko Zec (*ng_ether_attach_p)(ifp); 1004d3c351c5SMarko Zec CURVNET_RESTORE(); 1005d3c351c5SMarko Zec } 1006d3c351c5SMarko Zec } 1007d3c351c5SMarko Zec #endif 1008d3c351c5SMarko Zec 1009ce02431fSDoug Rabson SYSCTL_DECL(_net_link); 1010602d513cSGarrett Wollman SYSCTL_NODE(_net_link, IFT_ETHER, ether, CTLFLAG_RW, 0, "Ethernet"); 101130106f6aSPoul-Henning Kamp 101216b4a343SChristian Weisgerber #if 0 101316b4a343SChristian Weisgerber /* 101416b4a343SChristian Weisgerber * This is for reference. We have a table-driven version 101516b4a343SChristian Weisgerber * of the little-endian crc32 generator, which is faster 101616b4a343SChristian Weisgerber * than the double-loop. 101716b4a343SChristian Weisgerber */ 101816b4a343SChristian Weisgerber uint32_t 101916b4a343SChristian Weisgerber ether_crc32_le(const uint8_t *buf, size_t len) 102016b4a343SChristian Weisgerber { 102116b4a343SChristian Weisgerber size_t i; 102216b4a343SChristian Weisgerber uint32_t crc; 102316b4a343SChristian Weisgerber int bit; 102416b4a343SChristian Weisgerber uint8_t data; 102516b4a343SChristian Weisgerber 102616b4a343SChristian Weisgerber crc = 0xffffffff; /* initial value */ 102716b4a343SChristian Weisgerber 102816b4a343SChristian Weisgerber for (i = 0; i < len; i++) { 1029933dad75SAntoine Brodin for (data = *buf++, bit = 0; bit < 8; bit++, data >>= 1) { 103016b4a343SChristian Weisgerber carry = (crc ^ data) & 1; 103116b4a343SChristian Weisgerber crc >>= 1; 103216b4a343SChristian Weisgerber if (carry) 103316b4a343SChristian Weisgerber crc = (crc ^ ETHER_CRC_POLY_LE); 103416b4a343SChristian Weisgerber } 1035933dad75SAntoine Brodin } 103616b4a343SChristian Weisgerber 103716b4a343SChristian Weisgerber return (crc); 103816b4a343SChristian Weisgerber } 103916b4a343SChristian Weisgerber #else 104016b4a343SChristian Weisgerber uint32_t 104116b4a343SChristian Weisgerber ether_crc32_le(const uint8_t *buf, size_t len) 104216b4a343SChristian Weisgerber { 104316b4a343SChristian Weisgerber static const uint32_t crctab[] = { 104416b4a343SChristian Weisgerber 0x00000000, 0x1db71064, 0x3b6e20c8, 0x26d930ac, 104516b4a343SChristian Weisgerber 0x76dc4190, 0x6b6b51f4, 0x4db26158, 0x5005713c, 104616b4a343SChristian Weisgerber 0xedb88320, 0xf00f9344, 0xd6d6a3e8, 0xcb61b38c, 104716b4a343SChristian Weisgerber 0x9b64c2b0, 0x86d3d2d4, 0xa00ae278, 0xbdbdf21c 104816b4a343SChristian Weisgerber }; 104916b4a343SChristian Weisgerber size_t i; 105016b4a343SChristian Weisgerber uint32_t crc; 105116b4a343SChristian Weisgerber 105216b4a343SChristian Weisgerber crc = 0xffffffff; /* initial value */ 105316b4a343SChristian Weisgerber 105416b4a343SChristian Weisgerber for (i = 0; i < len; i++) { 105516b4a343SChristian Weisgerber crc ^= buf[i]; 105616b4a343SChristian Weisgerber crc = (crc >> 4) ^ crctab[crc & 0xf]; 105716b4a343SChristian Weisgerber crc = (crc >> 4) ^ crctab[crc & 0xf]; 105816b4a343SChristian Weisgerber } 105916b4a343SChristian Weisgerber 106016b4a343SChristian Weisgerber return (crc); 106116b4a343SChristian Weisgerber } 106216b4a343SChristian Weisgerber #endif 106316b4a343SChristian Weisgerber 106416b4a343SChristian Weisgerber uint32_t 106516b4a343SChristian Weisgerber ether_crc32_be(const uint8_t *buf, size_t len) 106616b4a343SChristian Weisgerber { 106716b4a343SChristian Weisgerber size_t i; 106816b4a343SChristian Weisgerber uint32_t crc, carry; 106916b4a343SChristian Weisgerber int bit; 107016b4a343SChristian Weisgerber uint8_t data; 107116b4a343SChristian Weisgerber 107216b4a343SChristian Weisgerber crc = 0xffffffff; /* initial value */ 107316b4a343SChristian Weisgerber 107416b4a343SChristian Weisgerber for (i = 0; i < len; i++) { 107516b4a343SChristian Weisgerber for (data = *buf++, bit = 0; bit < 8; bit++, data >>= 1) { 107616b4a343SChristian Weisgerber carry = ((crc & 0x80000000) ? 1 : 0) ^ (data & 0x01); 107716b4a343SChristian Weisgerber crc <<= 1; 107816b4a343SChristian Weisgerber if (carry) 107916b4a343SChristian Weisgerber crc = (crc ^ ETHER_CRC_POLY_BE) | carry; 108016b4a343SChristian Weisgerber } 108116b4a343SChristian Weisgerber } 108216b4a343SChristian Weisgerber 108316b4a343SChristian Weisgerber return (crc); 108416b4a343SChristian Weisgerber } 108516b4a343SChristian Weisgerber 1086fb583156SDavid Greenman int 1087995c7fd1SYaroslav Tykhiy ether_ioctl(struct ifnet *ifp, u_long command, caddr_t data) 108830106f6aSPoul-Henning Kamp { 108930106f6aSPoul-Henning Kamp struct ifaddr *ifa = (struct ifaddr *) data; 109030106f6aSPoul-Henning Kamp struct ifreq *ifr = (struct ifreq *) data; 1091fb583156SDavid Greenman int error = 0; 109230106f6aSPoul-Henning Kamp 109330106f6aSPoul-Henning Kamp switch (command) { 109430106f6aSPoul-Henning Kamp case SIOCSIFADDR: 109530106f6aSPoul-Henning Kamp ifp->if_flags |= IFF_UP; 109630106f6aSPoul-Henning Kamp 109730106f6aSPoul-Henning Kamp switch (ifa->ifa_addr->sa_family) { 109830106f6aSPoul-Henning Kamp #ifdef INET 109930106f6aSPoul-Henning Kamp case AF_INET: 110030106f6aSPoul-Henning Kamp ifp->if_init(ifp->if_softc); /* before arpwhohas */ 1101322dcb8dSMax Khon arp_ifinit(ifp, ifa); 110230106f6aSPoul-Henning Kamp break; 110330106f6aSPoul-Henning Kamp #endif 110430106f6aSPoul-Henning Kamp default: 110530106f6aSPoul-Henning Kamp ifp->if_init(ifp->if_softc); 110630106f6aSPoul-Henning Kamp break; 110730106f6aSPoul-Henning Kamp } 110830106f6aSPoul-Henning Kamp break; 110930106f6aSPoul-Henning Kamp 111030106f6aSPoul-Henning Kamp case SIOCGIFADDR: 111138d958a6SBrooks Davis bcopy(IF_LLADDR(ifp), &ifr->ifr_addr.sa_data[0], 111238d958a6SBrooks Davis ETHER_ADDR_LEN); 111330106f6aSPoul-Henning Kamp break; 1114fb583156SDavid Greenman 1115fb583156SDavid Greenman case SIOCSIFMTU: 1116fb583156SDavid Greenman /* 1117fb583156SDavid Greenman * Set the interface MTU. 1118fb583156SDavid Greenman */ 1119fb583156SDavid Greenman if (ifr->ifr_mtu > ETHERMTU) { 1120fb583156SDavid Greenman error = EINVAL; 1121fb583156SDavid Greenman } else { 1122fb583156SDavid Greenman ifp->if_mtu = ifr->ifr_mtu; 112330106f6aSPoul-Henning Kamp } 1124fb583156SDavid Greenman break; 1125f1379734SKonstantin Belousov 1126f1379734SKonstantin Belousov case SIOCSLANPCP: 1127f1379734SKonstantin Belousov error = priv_check(curthread, PRIV_NET_SETLANPCP); 1128f1379734SKonstantin Belousov if (error != 0) 1129f1379734SKonstantin Belousov break; 1130f1379734SKonstantin Belousov if (ifr->ifr_lan_pcp > 7 && 1131f1379734SKonstantin Belousov ifr->ifr_lan_pcp != IFNET_PCP_NONE) 1132f1379734SKonstantin Belousov error = EINVAL; 1133f1379734SKonstantin Belousov else 1134f1379734SKonstantin Belousov ifp->if_pcp = ifr->ifr_lan_pcp; 1135f1379734SKonstantin Belousov break; 1136f1379734SKonstantin Belousov 1137f1379734SKonstantin Belousov case SIOCGLANPCP: 1138f1379734SKonstantin Belousov ifr->ifr_lan_pcp = ifp->if_pcp; 1139f1379734SKonstantin Belousov break; 1140f1379734SKonstantin Belousov 1141c1d93b05SSam Leffler default: 1142c1d93b05SSam Leffler error = EINVAL; /* XXX netbsd has ENOTTY??? */ 1143c1d93b05SSam Leffler break; 1144fb583156SDavid Greenman } 1145fb583156SDavid Greenman return (error); 114630106f6aSPoul-Henning Kamp } 11471158dfb7SGarrett Wollman 114837c84183SPoul-Henning Kamp static int 114972fd1b6aSDag-Erling Smørgrav ether_resolvemulti(struct ifnet *ifp, struct sockaddr **llsa, 115072fd1b6aSDag-Erling Smørgrav struct sockaddr *sa) 11511158dfb7SGarrett Wollman { 11521158dfb7SGarrett Wollman struct sockaddr_dl *sdl; 1153d7647d96SDag-Erling Smørgrav #ifdef INET 11541158dfb7SGarrett Wollman struct sockaddr_in *sin; 1155d7647d96SDag-Erling Smørgrav #endif 115682cd038dSYoshinobu Inoue #ifdef INET6 115782cd038dSYoshinobu Inoue struct sockaddr_in6 *sin6; 115882cd038dSYoshinobu Inoue #endif 11591158dfb7SGarrett Wollman u_char *e_addr; 11601158dfb7SGarrett Wollman 11611158dfb7SGarrett Wollman switch(sa->sa_family) { 11621158dfb7SGarrett Wollman case AF_LINK: 11637f33a738SJulian Elischer /* 11647f33a738SJulian Elischer * No mapping needed. Just check that it's a valid MC address. 11657f33a738SJulian Elischer */ 11661158dfb7SGarrett Wollman sdl = (struct sockaddr_dl *)sa; 11671158dfb7SGarrett Wollman e_addr = LLADDR(sdl); 1168086e98c4SBruce M Simpson if (!ETHER_IS_MULTICAST(e_addr)) 11691158dfb7SGarrett Wollman return EADDRNOTAVAIL; 1170155d72c4SPedro F. Giffuni *llsa = NULL; 11711158dfb7SGarrett Wollman return 0; 11721158dfb7SGarrett Wollman 11731158dfb7SGarrett Wollman #ifdef INET 11741158dfb7SGarrett Wollman case AF_INET: 11751158dfb7SGarrett Wollman sin = (struct sockaddr_in *)sa; 11761158dfb7SGarrett Wollman if (!IN_MULTICAST(ntohl(sin->sin_addr.s_addr))) 11771158dfb7SGarrett Wollman return EADDRNOTAVAIL; 117895fbe4d0SAlexander V. Chernikov sdl = link_init_sdl(ifp, *llsa, IFT_ETHER); 11791158dfb7SGarrett Wollman sdl->sdl_alen = ETHER_ADDR_LEN; 11801158dfb7SGarrett Wollman e_addr = LLADDR(sdl); 11811158dfb7SGarrett Wollman ETHER_MAP_IP_MULTICAST(&sin->sin_addr, e_addr); 11821158dfb7SGarrett Wollman *llsa = (struct sockaddr *)sdl; 11831158dfb7SGarrett Wollman return 0; 11841158dfb7SGarrett Wollman #endif 118582cd038dSYoshinobu Inoue #ifdef INET6 118682cd038dSYoshinobu Inoue case AF_INET6: 118782cd038dSYoshinobu Inoue sin6 = (struct sockaddr_in6 *)sa; 1188595b8a1cSJun-ichiro itojun Hagino if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) { 1189595b8a1cSJun-ichiro itojun Hagino /* 1190595b8a1cSJun-ichiro itojun Hagino * An IP6 address of 0 means listen to all 1191595b8a1cSJun-ichiro itojun Hagino * of the Ethernet multicast address used for IP6. 1192595b8a1cSJun-ichiro itojun Hagino * (This is used for multicast routers.) 1193595b8a1cSJun-ichiro itojun Hagino */ 1194595b8a1cSJun-ichiro itojun Hagino ifp->if_flags |= IFF_ALLMULTI; 1195155d72c4SPedro F. Giffuni *llsa = NULL; 1196595b8a1cSJun-ichiro itojun Hagino return 0; 1197595b8a1cSJun-ichiro itojun Hagino } 119882cd038dSYoshinobu Inoue if (!IN6_IS_ADDR_MULTICAST(&sin6->sin6_addr)) 119982cd038dSYoshinobu Inoue return EADDRNOTAVAIL; 120095fbe4d0SAlexander V. Chernikov sdl = link_init_sdl(ifp, *llsa, IFT_ETHER); 120182cd038dSYoshinobu Inoue sdl->sdl_alen = ETHER_ADDR_LEN; 120282cd038dSYoshinobu Inoue e_addr = LLADDR(sdl); 120382cd038dSYoshinobu Inoue ETHER_MAP_IPV6_MULTICAST(&sin6->sin6_addr, e_addr); 120482cd038dSYoshinobu Inoue *llsa = (struct sockaddr *)sdl; 120582cd038dSYoshinobu Inoue return 0; 120682cd038dSYoshinobu Inoue #endif 12071158dfb7SGarrett Wollman 12081158dfb7SGarrett Wollman default: 12091158dfb7SGarrett Wollman /* 12101158dfb7SGarrett Wollman * Well, the text isn't quite right, but it's the name 12111158dfb7SGarrett Wollman * that counts... 12121158dfb7SGarrett Wollman */ 12131158dfb7SGarrett Wollman return EAFNOSUPPORT; 12141158dfb7SGarrett Wollman } 12151158dfb7SGarrett Wollman } 121640811c14SMatthew N. Dodd 121740811c14SMatthew N. Dodd static moduledata_t ether_mod = { 1218833e8dc5SGleb Smirnoff .name = "ether", 121940811c14SMatthew N. Dodd }; 122040811c14SMatthew N. Dodd 122152f1277eSChristian S.J. Peron void 122252f1277eSChristian S.J. Peron ether_vlan_mtap(struct bpf_if *bp, struct mbuf *m, void *data, u_int dlen) 122352f1277eSChristian S.J. Peron { 122452f1277eSChristian S.J. Peron struct ether_vlan_header vlan; 122552f1277eSChristian S.J. Peron struct mbuf mv, mb; 122652f1277eSChristian S.J. Peron 122752f1277eSChristian S.J. Peron KASSERT((m->m_flags & M_VLANTAG) != 0, 122852f1277eSChristian S.J. Peron ("%s: vlan information not present", __func__)); 122952f1277eSChristian S.J. Peron KASSERT(m->m_len >= sizeof(struct ether_header), 123052f1277eSChristian S.J. Peron ("%s: mbuf not large enough for header", __func__)); 123152f1277eSChristian S.J. Peron bcopy(mtod(m, char *), &vlan, sizeof(struct ether_header)); 123252f1277eSChristian S.J. Peron vlan.evl_proto = vlan.evl_encap_proto; 123352f1277eSChristian S.J. Peron vlan.evl_encap_proto = htons(ETHERTYPE_VLAN); 123452f1277eSChristian S.J. Peron vlan.evl_tag = htons(m->m_pkthdr.ether_vtag); 123552f1277eSChristian S.J. Peron m->m_len -= sizeof(struct ether_header); 123652f1277eSChristian S.J. Peron m->m_data += sizeof(struct ether_header); 123752f1277eSChristian S.J. Peron /* 123852f1277eSChristian S.J. Peron * If a data link has been supplied by the caller, then we will need to 123952f1277eSChristian S.J. Peron * re-create a stack allocated mbuf chain with the following structure: 124052f1277eSChristian S.J. Peron * 124152f1277eSChristian S.J. Peron * (1) mbuf #1 will contain the supplied data link 124252f1277eSChristian S.J. Peron * (2) mbuf #2 will contain the vlan header 124352f1277eSChristian S.J. Peron * (3) mbuf #3 will contain the original mbuf's packet data 124452f1277eSChristian S.J. Peron * 124552f1277eSChristian S.J. Peron * Otherwise, submit the packet and vlan header via bpf_mtap2(). 124652f1277eSChristian S.J. Peron */ 124752f1277eSChristian S.J. Peron if (data != NULL) { 124852f1277eSChristian S.J. Peron mv.m_next = m; 124952f1277eSChristian S.J. Peron mv.m_data = (caddr_t)&vlan; 125052f1277eSChristian S.J. Peron mv.m_len = sizeof(vlan); 125152f1277eSChristian S.J. Peron mb.m_next = &mv; 125252f1277eSChristian S.J. Peron mb.m_data = data; 125352f1277eSChristian S.J. Peron mb.m_len = dlen; 125452f1277eSChristian S.J. Peron bpf_mtap(bp, &mb); 125552f1277eSChristian S.J. Peron } else 125652f1277eSChristian S.J. Peron bpf_mtap2(bp, &vlan, sizeof(vlan), m); 125752f1277eSChristian S.J. Peron m->m_len += sizeof(struct ether_header); 125852f1277eSChristian S.J. Peron m->m_data -= sizeof(struct ether_header); 125952f1277eSChristian S.J. Peron } 126052f1277eSChristian S.J. Peron 126160e87ca8SAndrew Thompson struct mbuf * 1262a0cf8186SAndrew Thompson ether_vlanencap(struct mbuf *m, uint16_t tag) 126360e87ca8SAndrew Thompson { 126460e87ca8SAndrew Thompson struct ether_vlan_header *evl; 126560e87ca8SAndrew Thompson 1266eb1b1807SGleb Smirnoff M_PREPEND(m, ETHER_VLAN_ENCAP_LEN, M_NOWAIT); 126760e87ca8SAndrew Thompson if (m == NULL) 126860e87ca8SAndrew Thompson return (NULL); 126960e87ca8SAndrew Thompson /* M_PREPEND takes care of m_len, m_pkthdr.len for us */ 127060e87ca8SAndrew Thompson 127160e87ca8SAndrew Thompson if (m->m_len < sizeof(*evl)) { 127260e87ca8SAndrew Thompson m = m_pullup(m, sizeof(*evl)); 127360e87ca8SAndrew Thompson if (m == NULL) 127460e87ca8SAndrew Thompson return (NULL); 127560e87ca8SAndrew Thompson } 127660e87ca8SAndrew Thompson 127760e87ca8SAndrew Thompson /* 127860e87ca8SAndrew Thompson * Transform the Ethernet header into an Ethernet header 127960e87ca8SAndrew Thompson * with 802.1Q encapsulation. 128060e87ca8SAndrew Thompson */ 128160e87ca8SAndrew Thompson evl = mtod(m, struct ether_vlan_header *); 128260e87ca8SAndrew Thompson bcopy((char *)evl + ETHER_VLAN_ENCAP_LEN, 128360e87ca8SAndrew Thompson (char *)evl, ETHER_HDR_LEN - ETHER_TYPE_LEN); 128460e87ca8SAndrew Thompson evl->evl_encap_proto = htons(ETHERTYPE_VLAN); 128560e87ca8SAndrew Thompson evl->evl_tag = htons(tag); 128660e87ca8SAndrew Thompson return (m); 128760e87ca8SAndrew Thompson } 128860e87ca8SAndrew Thompson 1289f1379734SKonstantin Belousov static SYSCTL_NODE(_net_link, IFT_L2VLAN, vlan, CTLFLAG_RW, 0, 1290f1379734SKonstantin Belousov "IEEE 802.1Q VLAN"); 1291f1379734SKonstantin Belousov static SYSCTL_NODE(_net_link_vlan, PF_LINK, link, CTLFLAG_RW, 0, 1292f1379734SKonstantin Belousov "for consistency"); 1293f1379734SKonstantin Belousov 1294f1379734SKonstantin Belousov static VNET_DEFINE(int, soft_pad); 1295f1379734SKonstantin Belousov #define V_soft_pad VNET(soft_pad) 1296f1379734SKonstantin Belousov SYSCTL_INT(_net_link_vlan, OID_AUTO, soft_pad, CTLFLAG_RW | CTLFLAG_VNET, 1297f1379734SKonstantin Belousov &VNET_NAME(soft_pad), 0, 1298f1379734SKonstantin Belousov "pad short frames before tagging"); 1299f1379734SKonstantin Belousov 1300f1379734SKonstantin Belousov /* 1301f1379734SKonstantin Belousov * For now, make preserving PCP via an mbuf tag optional, as it increases 1302f1379734SKonstantin Belousov * per-packet memory allocations and frees. In the future, it would be 1303f1379734SKonstantin Belousov * preferable to reuse ether_vtag for this, or similar. 1304f1379734SKonstantin Belousov */ 1305f1379734SKonstantin Belousov int vlan_mtag_pcp = 0; 1306f1379734SKonstantin Belousov SYSCTL_INT(_net_link_vlan, OID_AUTO, mtag_pcp, CTLFLAG_RW, 1307f1379734SKonstantin Belousov &vlan_mtag_pcp, 0, 1308f1379734SKonstantin Belousov "Retain VLAN PCP information as packets are passed up the stack"); 1309f1379734SKonstantin Belousov 1310f1379734SKonstantin Belousov bool 1311f1379734SKonstantin Belousov ether_8021q_frame(struct mbuf **mp, struct ifnet *ife, struct ifnet *p, 1312f1379734SKonstantin Belousov uint16_t vid, uint8_t pcp) 1313f1379734SKonstantin Belousov { 1314f1379734SKonstantin Belousov struct m_tag *mtag; 1315f1379734SKonstantin Belousov int n; 1316f1379734SKonstantin Belousov uint16_t tag; 1317f1379734SKonstantin Belousov static const char pad[8]; /* just zeros */ 1318f1379734SKonstantin Belousov 1319f1379734SKonstantin Belousov /* 1320f1379734SKonstantin Belousov * Pad the frame to the minimum size allowed if told to. 1321f1379734SKonstantin Belousov * This option is in accord with IEEE Std 802.1Q, 2003 Ed., 1322f1379734SKonstantin Belousov * paragraph C.4.4.3.b. It can help to work around buggy 1323f1379734SKonstantin Belousov * bridges that violate paragraph C.4.4.3.a from the same 1324f1379734SKonstantin Belousov * document, i.e., fail to pad short frames after untagging. 1325f1379734SKonstantin Belousov * E.g., a tagged frame 66 bytes long (incl. FCS) is OK, but 1326f1379734SKonstantin Belousov * untagging it will produce a 62-byte frame, which is a runt 1327f1379734SKonstantin Belousov * and requires padding. There are VLAN-enabled network 1328f1379734SKonstantin Belousov * devices that just discard such runts instead or mishandle 1329f1379734SKonstantin Belousov * them somehow. 1330f1379734SKonstantin Belousov */ 1331f1379734SKonstantin Belousov if (V_soft_pad && p->if_type == IFT_ETHER) { 1332f1379734SKonstantin Belousov for (n = ETHERMIN + ETHER_HDR_LEN - (*mp)->m_pkthdr.len; 1333f1379734SKonstantin Belousov n > 0; n -= sizeof(pad)) { 1334f1379734SKonstantin Belousov if (!m_append(*mp, min(n, sizeof(pad)), pad)) 1335f1379734SKonstantin Belousov break; 1336f1379734SKonstantin Belousov } 1337f1379734SKonstantin Belousov if (n > 0) { 1338f1379734SKonstantin Belousov m_freem(*mp); 1339f1379734SKonstantin Belousov *mp = NULL; 1340f1379734SKonstantin Belousov if_printf(ife, "cannot pad short frame"); 1341f1379734SKonstantin Belousov return (false); 1342f1379734SKonstantin Belousov } 1343f1379734SKonstantin Belousov } 1344f1379734SKonstantin Belousov 1345f1379734SKonstantin Belousov /* 1346f1379734SKonstantin Belousov * If underlying interface can do VLAN tag insertion itself, 1347f1379734SKonstantin Belousov * just pass the packet along. However, we need some way to 1348f1379734SKonstantin Belousov * tell the interface where the packet came from so that it 1349f1379734SKonstantin Belousov * knows how to find the VLAN tag to use, so we attach a 1350f1379734SKonstantin Belousov * packet tag that holds it. 1351f1379734SKonstantin Belousov */ 1352f1379734SKonstantin Belousov if (vlan_mtag_pcp && (mtag = m_tag_locate(*mp, MTAG_8021Q, 1353f1379734SKonstantin Belousov MTAG_8021Q_PCP_OUT, NULL)) != NULL) 1354f1379734SKonstantin Belousov tag = EVL_MAKETAG(vid, *(uint8_t *)(mtag + 1), 0); 1355f1379734SKonstantin Belousov else 1356f1379734SKonstantin Belousov tag = EVL_MAKETAG(vid, pcp, 0); 1357f1379734SKonstantin Belousov if (p->if_capenable & IFCAP_VLAN_HWTAGGING) { 1358f1379734SKonstantin Belousov (*mp)->m_pkthdr.ether_vtag = tag; 1359f1379734SKonstantin Belousov (*mp)->m_flags |= M_VLANTAG; 1360f1379734SKonstantin Belousov } else { 1361f1379734SKonstantin Belousov *mp = ether_vlanencap(*mp, tag); 1362f1379734SKonstantin Belousov if (*mp == NULL) { 1363f1379734SKonstantin Belousov if_printf(ife, "unable to prepend 802.1Q header"); 1364f1379734SKonstantin Belousov return (false); 1365f1379734SKonstantin Belousov } 1366f1379734SKonstantin Belousov } 1367f1379734SKonstantin Belousov return (true); 1368f1379734SKonstantin Belousov } 1369f1379734SKonstantin Belousov 1370fc74a9f9SBrooks Davis DECLARE_MODULE(ether, ether_mod, SI_SUB_INIT_IF, SI_ORDER_ANY); 137140811c14SMatthew N. Dodd MODULE_VERSION(ether, 1); 1372