1 /* $NetBSD: if_agrsubr.c,v 1.3 2005/12/11 12:24:54 christos Exp $ */ 2 3 /*- 4 * Copyright (c)2005 YAMAMOTO Takashi, 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 */ 28 29 #include <sys/cdefs.h> 30 __KERNEL_RCSID(0, "$NetBSD: if_agrsubr.c,v 1.3 2005/12/11 12:24:54 christos Exp $"); 31 32 #include "bpfilter.h" 33 #include "opt_inet.h" 34 35 #include <sys/param.h> 36 #include <sys/callout.h> 37 #include <sys/malloc.h> 38 #include <sys/systm.h> 39 #include <sys/types.h> 40 #include <sys/queue.h> 41 #include <sys/sockio.h> 42 43 #include <net/if.h> 44 45 #include <net/agr/if_agrvar_impl.h> 46 #include <net/agr/if_agrsubr.h> 47 48 struct agr_mc_entry { 49 TAILQ_ENTRY(agr_mc_entry) ame_q; 50 int ame_refcnt; 51 struct agr_ifreq ame_ifr; /* XXX waste */ 52 }; 53 54 static struct agr_mc_entry *agr_mc_lookup(struct agr_multiaddrs *, 55 const struct ifreq *); 56 static int agrport_mc_add_callback(struct agr_port *, void *); 57 static int agrport_mc_del_callback(struct agr_port *, void *); 58 static int agrmc_mc_add_callback(struct agr_mc_entry *, void *); 59 static int agrmc_mc_del_callback(struct agr_mc_entry *, void *); 60 61 static int agr_mc_add(struct agr_multiaddrs *, const struct ifreq *); 62 static int agr_mc_del(struct agr_multiaddrs *, const struct ifreq *); 63 64 int 65 agr_mc_purgeall(struct agr_softc *sc, struct agr_multiaddrs *ama) 66 { 67 struct agr_mc_entry *ame; 68 int error = 0; 69 70 while ((ame = TAILQ_FIRST(&ama->ama_addrs)) != NULL) { 71 error = agr_port_foreach(sc, 72 agrport_mc_del_callback, &ame->ame_ifr); 73 if (error) { 74 /* XXX XXX */ 75 printf("%s: error %d\n", __func__, error); 76 } 77 78 free(ame, M_DEVBUF); 79 } 80 81 return error; 82 } 83 84 int 85 agr_mc_init(struct agr_softc *sc, struct agr_multiaddrs *ama) 86 { 87 88 TAILQ_INIT(&ama->ama_addrs); 89 90 return 0; 91 } 92 93 /* ==================== */ 94 95 static struct agr_mc_entry * 96 agr_mc_lookup(struct agr_multiaddrs *ama, const struct ifreq *ifr) 97 { 98 struct agr_mc_entry *ame; 99 const struct sockaddr *sa; 100 sa = &ifr->ifr_addr; 101 102 TAILQ_FOREACH(ame, &ama->ama_addrs, ame_q) { 103 if (!memcmp(&ame->ame_ifr.ifr_ss, sa, sa->sa_len)) 104 return ame; 105 } 106 107 return NULL; 108 } 109 110 int 111 agr_mc_foreach(struct agr_multiaddrs *ama, 112 int (*func)(struct agr_mc_entry *, void *), void *arg) 113 { 114 struct agr_mc_entry *ame; 115 int error = 0; 116 117 TAILQ_FOREACH(ame, &ama->ama_addrs, ame_q) { 118 error = (*func)(ame, arg); 119 if (error) { 120 /* 121 * XXX how to recover? 122 * we can try to restore setting, but it can also fail.. 123 */ 124 break; 125 } 126 } 127 128 return error; 129 } 130 131 static int 132 agr_mc_add(struct agr_multiaddrs *ama, const struct ifreq *ifr) 133 { 134 struct agr_mc_entry *ame; 135 const struct sockaddr *sa; 136 137 ame = agr_mc_lookup(ama, ifr); 138 if (ame) { 139 ame->ame_refcnt++; 140 return 0; 141 } 142 143 ame = malloc(sizeof(*ame), M_DEVBUF, M_NOWAIT | M_ZERO); 144 if (ame == NULL) 145 return ENOMEM; 146 147 sa = &ifr->ifr_addr; 148 memcpy(&ame->ame_ifr.ifr_ss, sa, sa->sa_len); 149 ame->ame_refcnt = 1; 150 151 return ENETRESET; 152 } 153 154 static int 155 agr_mc_del(struct agr_multiaddrs *ama, const struct ifreq *ifr) 156 { 157 struct agr_mc_entry *ame; 158 159 ame = agr_mc_lookup(ama, ifr); 160 if (ame == NULL) 161 return ENOENT; 162 163 ame->ame_refcnt--; 164 if (ame->ame_refcnt > 0) 165 return 0; 166 167 free(ame, M_DEVBUF); 168 169 return ENETRESET; 170 } 171 172 /* ==================== */ 173 174 int 175 agr_port_foreach(struct agr_softc *sc, 176 int (*func)(struct agr_port *, void *), void *arg) 177 { 178 struct agr_port *port; 179 int error = 0; 180 181 TAILQ_FOREACH(port, &sc->sc_ports, port_q) { 182 if ((port->port_flags & (AGRPORT_LARVAL | AGRPORT_DETACHING))) { 183 continue; 184 } 185 error = (func)(port, arg); 186 if (error) { 187 /* 188 * XXX how to recover? 189 * we can try to restore setting, but it can also fail.. 190 */ 191 break; 192 } 193 } 194 195 return error; 196 } 197 198 /* ==================== */ 199 200 static int 201 agrmc_mc_add_callback(struct agr_mc_entry *ame, void *arg) 202 { 203 204 return agrport_mc_add_callback(arg, &ame->ame_ifr); 205 } 206 207 static int 208 agrmc_mc_del_callback(struct agr_mc_entry *ame, void *arg) 209 { 210 211 return agrport_mc_del_callback(arg, &ame->ame_ifr); 212 } 213 214 int 215 agr_configmulti_port(struct agr_multiaddrs *ama, struct agr_port *port, 216 boolean_t add) 217 { 218 219 return agr_mc_foreach(ama, 220 add ? agrmc_mc_add_callback : agrmc_mc_del_callback, port); 221 } 222 223 /* -------------------- */ 224 225 static int 226 agrport_mc_add_callback(struct agr_port *port, void *arg) 227 { 228 229 return agrport_ioctl(port, SIOCADDMULTI, arg); 230 } 231 232 static int 233 agrport_mc_del_callback(struct agr_port *port, void *arg) 234 { 235 236 return agrport_ioctl(port, SIOCADDMULTI, arg); 237 } 238 239 int 240 agr_configmulti_ifreq(struct agr_softc *sc, struct agr_multiaddrs *ama, 241 struct ifreq *ifr, boolean_t add) 242 { 243 int error; 244 245 if (add) 246 error = agr_mc_add(ama, ifr); 247 else 248 error = agr_mc_del(ama, ifr); 249 250 if (error != ENETRESET) 251 return error; 252 253 return agr_port_foreach(sc, 254 add ? agrport_mc_add_callback : agrport_mc_del_callback, ifr); 255 } 256 257 /* ==================== */ 258 259 int 260 agr_port_getmedia(struct agr_port *port, u_int *media, u_int *status) 261 { 262 struct ifmediareq ifmr; 263 int error; 264 265 memset(&ifmr, 0, sizeof(ifmr)); 266 ifmr.ifm_count = 0; 267 error = agrport_ioctl(port, SIOCGIFMEDIA, (caddr_t)&ifmr); 268 269 if (error == 0) { 270 *media = ifmr.ifm_active; 271 *status = ifmr.ifm_status; 272 } 273 274 return error; 275 } 276