if_agrsubr.c revision 1.5.2.1
1 /* $NetBSD: if_agrsubr.c,v 1.5.2.1 2007/08/20 21:27:56 ad 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 1.5.2.1 2007/08/20 21:27:56 ad 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 TAILQ_REMOVE(&ama->ama_addrs, ame, ame_q); 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 TAILQ_INSERT_TAIL(&ama->ama_addrs, ame, ame_q); 151 152 return ENETRESET; 153 } 154 155 static int 156 agr_mc_del(struct agr_multiaddrs *ama, const struct ifreq *ifr) 157 { 158 struct agr_mc_entry *ame; 159 160 ame = agr_mc_lookup(ama, ifr); 161 if (ame == NULL) 162 return ENOENT; 163 164 ame->ame_refcnt--; 165 if (ame->ame_refcnt > 0) 166 return 0; 167 168 TAILQ_REMOVE(&ama->ama_addrs, ame, ame_q); 169 free(ame, M_DEVBUF); 170 171 return ENETRESET; 172 } 173 174 /* ==================== */ 175 176 int 177 agr_port_foreach(struct agr_softc *sc, 178 int (*func)(struct agr_port *, void *), void *arg) 179 { 180 struct agr_port *port; 181 int error = 0; 182 183 TAILQ_FOREACH(port, &sc->sc_ports, port_q) { 184 if ((port->port_flags & (AGRPORT_LARVAL | AGRPORT_DETACHING))) { 185 continue; 186 } 187 error = (func)(port, arg); 188 if (error) { 189 /* 190 * XXX how to recover? 191 * we can try to restore setting, but it can also fail.. 192 */ 193 break; 194 } 195 } 196 197 return error; 198 } 199 200 /* ==================== */ 201 202 static int 203 agrmc_mc_add_callback(struct agr_mc_entry *ame, void *arg) 204 { 205 206 return agrport_mc_add_callback(arg, &ame->ame_ifr); 207 } 208 209 static int 210 agrmc_mc_del_callback(struct agr_mc_entry *ame, void *arg) 211 { 212 213 return agrport_mc_del_callback(arg, &ame->ame_ifr); 214 } 215 216 int 217 agr_configmulti_port(struct agr_multiaddrs *ama, struct agr_port *port, 218 bool add) 219 { 220 221 return agr_mc_foreach(ama, 222 add ? agrmc_mc_add_callback : agrmc_mc_del_callback, port); 223 } 224 225 /* -------------------- */ 226 227 static int 228 agrport_mc_add_callback(struct agr_port *port, void *arg) 229 { 230 231 return agrport_ioctl(port, SIOCADDMULTI, arg); 232 } 233 234 static int 235 agrport_mc_del_callback(struct agr_port *port, void *arg) 236 { 237 238 return agrport_ioctl(port, SIOCDELMULTI, arg); 239 } 240 241 int 242 agr_configmulti_ifreq(struct agr_softc *sc, struct agr_multiaddrs *ama, 243 struct ifreq *ifr, bool add) 244 { 245 int error; 246 247 if (add) 248 error = agr_mc_add(ama, ifr); 249 else 250 error = agr_mc_del(ama, ifr); 251 252 if (error != ENETRESET) 253 return error; 254 255 return agr_port_foreach(sc, 256 add ? agrport_mc_add_callback : agrport_mc_del_callback, ifr); 257 } 258 259 /* ==================== */ 260 261 int 262 agr_port_getmedia(struct agr_port *port, u_int *media, u_int *status) 263 { 264 struct ifmediareq ifmr; 265 int error; 266 267 memset(&ifmr, 0, sizeof(ifmr)); 268 ifmr.ifm_count = 0; 269 error = agrport_ioctl(port, SIOCGIFMEDIA, (void *)&ifmr); 270 271 if (error == 0) { 272 *media = ifmr.ifm_active; 273 *status = ifmr.ifm_status; 274 } 275 276 return error; 277 } 278
Indexes created Sun Oct 19 02:09:48 GMT 2025