ieee8023ad_marker.c revision 1.1.6.2
1 1.1.6.2 kent /* $NetBSD: ieee8023ad_marker.c,v 1.1.6.2 2005/04/29 11:29:32 kent Exp $ */ 2 1.1.6.2 kent 3 1.1.6.2 kent /*- 4 1.1.6.2 kent * Copyright (c)2005 YAMAMOTO Takashi, 5 1.1.6.2 kent * All rights reserved. 6 1.1.6.2 kent * 7 1.1.6.2 kent * Redistribution and use in source and binary forms, with or without 8 1.1.6.2 kent * modification, are permitted provided that the following conditions 9 1.1.6.2 kent * are met: 10 1.1.6.2 kent * 1. Redistributions of source code must retain the above copyright 11 1.1.6.2 kent * notice, this list of conditions and the following disclaimer. 12 1.1.6.2 kent * 2. Redistributions in binary form must reproduce the above copyright 13 1.1.6.2 kent * notice, this list of conditions and the following disclaimer in the 14 1.1.6.2 kent * documentation and/or other materials provided with the distribution. 15 1.1.6.2 kent * 16 1.1.6.2 kent * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17 1.1.6.2 kent * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 1.1.6.2 kent * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 1.1.6.2 kent * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20 1.1.6.2 kent * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 1.1.6.2 kent * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 1.1.6.2 kent * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 1.1.6.2 kent * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 1.1.6.2 kent * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 1.1.6.2 kent * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 1.1.6.2 kent * SUCH DAMAGE. 27 1.1.6.2 kent */ 28 1.1.6.2 kent 29 1.1.6.2 kent #include <sys/cdefs.h> 30 1.1.6.2 kent __KERNEL_RCSID(0, "$NetBSD: ieee8023ad_marker.c,v 1.1.6.2 2005/04/29 11:29:32 kent Exp $"); 31 1.1.6.2 kent 32 1.1.6.2 kent #include <sys/param.h> 33 1.1.6.2 kent #include <sys/mbuf.h> 34 1.1.6.2 kent #include <sys/systm.h> 35 1.1.6.2 kent 36 1.1.6.2 kent #include <net/if.h> 37 1.1.6.2 kent #include <net/if_ether.h> 38 1.1.6.2 kent 39 1.1.6.2 kent #include <net/agr/if_agrvar_impl.h> 40 1.1.6.2 kent #include <net/agr/ieee8023_slowprotocols.h> 41 1.1.6.2 kent #include <net/agr/ieee8023_tlv.h> 42 1.1.6.2 kent #include <net/agr/ieee8023ad.h> 43 1.1.6.2 kent #include <net/agr/ieee8023ad_marker.h> 44 1.1.6.2 kent 45 1.1.6.2 kent static const struct tlv_template marker_info_tlv_template[] = { 46 1.1.6.2 kent { MARKER_TYPE_INFO, 16 }, 47 1.1.6.2 kent { 0, 0 }, 48 1.1.6.2 kent }; 49 1.1.6.2 kent 50 1.1.6.2 kent static const struct tlv_template marker_response_tlv_template[] = { 51 1.1.6.2 kent { MARKER_TYPE_RESPONSE, 16 }, 52 1.1.6.2 kent { 0, 0 }, 53 1.1.6.2 kent }; 54 1.1.6.2 kent 55 1.1.6.2 kent int 56 1.1.6.2 kent ieee8023ad_marker_input(struct ifnet *ifp, struct mbuf *m) 57 1.1.6.2 kent { 58 1.1.6.2 kent struct markerdu *mdu; 59 1.1.6.2 kent struct agr_port *port; 60 1.1.6.2 kent int error = 0; 61 1.1.6.2 kent 62 1.1.6.2 kent port = ifp->if_agrprivate; /* XXX race with agr_remport. */ 63 1.1.6.2 kent KASSERT(port); 64 1.1.6.2 kent if (__predict_false(port->port_flags & AGRPORT_DETACHING)) { 65 1.1.6.2 kent goto bad; 66 1.1.6.2 kent } 67 1.1.6.2 kent 68 1.1.6.2 kent if (m->m_pkthdr.len != sizeof(*mdu)) { 69 1.1.6.2 kent goto bad; 70 1.1.6.2 kent } 71 1.1.6.2 kent 72 1.1.6.2 kent if ((m->m_flags & M_MCAST) == 0) { 73 1.1.6.2 kent goto bad; 74 1.1.6.2 kent } 75 1.1.6.2 kent 76 1.1.6.2 kent if (m->m_len < sizeof(*mdu)) { 77 1.1.6.2 kent m = m_pullup(m, sizeof(*mdu)); 78 1.1.6.2 kent if (m == NULL) { 79 1.1.6.2 kent return ENOMEM; 80 1.1.6.2 kent } 81 1.1.6.2 kent } 82 1.1.6.2 kent 83 1.1.6.2 kent mdu = mtod(m, struct markerdu *); 84 1.1.6.2 kent 85 1.1.6.2 kent if (memcmp(&mdu->mdu_eh.ether_dhost, 86 1.1.6.2 kent ðermulticastaddr_slowprotocols, ETHER_ADDR_LEN)) { 87 1.1.6.2 kent goto bad; 88 1.1.6.2 kent } 89 1.1.6.2 kent 90 1.1.6.2 kent KASSERT(mdu->mdu_sph.sph_subtype == SLOWPROTOCOLS_SUBTYPE_MARKER); 91 1.1.6.2 kent if (mdu->mdu_sph.sph_version != 1) { 92 1.1.6.2 kent goto bad; 93 1.1.6.2 kent } 94 1.1.6.2 kent 95 1.1.6.2 kent switch (mdu->mdu_tlv.tlv_type) { 96 1.1.6.2 kent case MARKER_TYPE_INFO: 97 1.1.6.2 kent if (tlv_check(mdu, sizeof(*mdu), &mdu->mdu_tlv, 98 1.1.6.2 kent marker_info_tlv_template, TRUE)) { 99 1.1.6.2 kent goto bad; 100 1.1.6.2 kent } 101 1.1.6.2 kent mdu->mdu_tlv.tlv_type = MARKER_TYPE_RESPONSE; 102 1.1.6.2 kent memcpy(&mdu->mdu_eh.ether_dhost, 103 1.1.6.2 kent ðermulticastaddr_slowprotocols, ETHER_ADDR_LEN); 104 1.1.6.2 kent memcpy(&mdu->mdu_eh.ether_shost, 105 1.1.6.2 kent &port->port_origlladdr, ETHER_ADDR_LEN); 106 1.1.6.2 kent error = agr_xmit_frame(ifp, m); 107 1.1.6.2 kent break; 108 1.1.6.2 kent 109 1.1.6.2 kent case MARKER_TYPE_RESPONSE: 110 1.1.6.2 kent if (tlv_check(mdu, sizeof(*mdu), &mdu->mdu_tlv, 111 1.1.6.2 kent marker_response_tlv_template, TRUE)) { 112 1.1.6.2 kent goto bad; 113 1.1.6.2 kent } 114 1.1.6.2 kent /* 115 1.1.6.2 kent * we are not interested in responses as 116 1.1.6.2 kent * we don't have a marker sender. 117 1.1.6.2 kent */ 118 1.1.6.2 kent /* FALLTHROUGH */ 119 1.1.6.2 kent default: 120 1.1.6.2 kent goto bad; 121 1.1.6.2 kent } 122 1.1.6.2 kent 123 1.1.6.2 kent return error; 124 1.1.6.2 kent 125 1.1.6.2 kent bad: 126 1.1.6.2 kent m_freem(m); 127 1.1.6.2 kent return EINVAL; 128 1.1.6.2 kent } 129
Indexes created Wed Oct 01 19:09:53 GMT 2025