if_agrsubr.c revision 1.8
1 /* $NetBSD: if_agrsubr.c,v 1.8 2007/09/01 03:07:24 dyoung 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 1.8 2007/09/01 03:07:24 dyoung 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 sockaddr *); 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 sockaddr *); 62 static int agr_mc_del(struct agr_multiaddrs *, const struct sockaddr *); 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 sockaddr *sa) 97 { 98 struct agr_mc_entry *ame; 99 100 TAILQ_FOREACH(ame, &ama->ama_addrs, ame_q) { 101 if (!memcmp(&ame->ame_ifr.ifr_ss, sa, sa->sa_len)) 102 return ame; 103 } 104 105 return NULL; 106 } 107 108 int 109 agr_mc_foreach(struct agr_multiaddrs *ama, 110 int (*func)(struct agr_mc_entry *, void *), void *arg) 111 { 112 struct agr_mc_entry *ame; 113 int error = 0; 114 115 TAILQ_FOREACH(ame, &ama->ama_addrs, ame_q) { 116 error = (*func)(ame, arg); 117 if (error) { 118 /* 119 * XXX how to recover? 120 * we can try to restore setting, but it can also fail.. 121 */ 122 break; 123 } 124 } 125 126 return error; 127 } 128 129 static int 130 agr_mc_add(struct agr_multiaddrs *ama, const struct sockaddr *sa) 131 { 132 struct agr_mc_entry *ame; 133 134 ame = agr_mc_lookup(ama, sa); 135 if (ame) { 136 ame->ame_refcnt++; 137 return 0; 138 } 139 140 ame = malloc(sizeof(*ame), M_DEVBUF, M_NOWAIT | M_ZERO); 141 if (ame == NULL) 142 return ENOMEM; 143 144 memcpy(&ame->ame_ifr.ifr_ss, sa, sa->sa_len); 145 ame->ame_refcnt = 1; 146 TAILQ_INSERT_TAIL(&ama->ama_addrs, ame, ame_q); 147 148 return ENETRESET; 149 } 150 151 static int 152 agr_mc_del(struct agr_multiaddrs *ama, const struct sockaddr *sa) 153 { 154 struct agr_mc_entry *ame; 155 156 ame = agr_mc_lookup(ama, sa); 157 if (ame == NULL) 158 return ENOENT; 159 160 ame->ame_refcnt--; 161 if (ame->ame_refcnt > 0) 162 return 0; 163 164 TAILQ_REMOVE(&ama->ama_addrs, ame, ame_q); 165 free(ame, M_DEVBUF); 166 167 return ENETRESET; 168 } 169 170 /* ==================== */ 171 172 int 173 agr_port_foreach(struct agr_softc *sc, 174 int (*func)(struct agr_port *, void *), void *arg) 175 { 176 struct agr_port *port; 177 int error = 0; 178 179 TAILQ_FOREACH(port, &sc->sc_ports, port_q) { 180 if ((port->port_flags & (AGRPORT_LARVAL | AGRPORT_DETACHING))) { 181 continue; 182 } 183 error = (func)(port, arg); 184 if (error) { 185 /* 186 * XXX how to recover? 187 * we can try to restore setting, but it can also fail.. 188 */ 189 break; 190 } 191 } 192 193 return error; 194 } 195 196 /* ==================== */ 197 198 static int 199 agrmc_mc_add_callback(struct agr_mc_entry *ame, void *arg) 200 { 201 202 return agrport_mc_add_callback(arg, &ame->ame_ifr); 203 } 204 205 static int 206 agrmc_mc_del_callback(struct agr_mc_entry *ame, void *arg) 207 { 208 209 return agrport_mc_del_callback(arg, &ame->ame_ifr); 210 } 211 212 int 213 agr_configmulti_port(struct agr_multiaddrs *ama, struct agr_port *port, 214 bool add) 215 { 216 217 return agr_mc_foreach(ama, 218 add ? agrmc_mc_add_callback : agrmc_mc_del_callback, port); 219 } 220 221 /* -------------------- */ 222 223 static int 224 agrport_mc_add_callback(struct agr_port *port, void *arg) 225 { 226 227 return agrport_ioctl(port, SIOCADDMULTI, arg); 228 } 229 230 static int 231 agrport_mc_del_callback(struct agr_port *port, void *arg) 232 { 233 234 return agrport_ioctl(port, SIOCDELMULTI, arg); 235 } 236 237 int 238 agr_configmulti_ifreq(struct agr_softc *sc, struct agr_multiaddrs *ama, 239 struct ifreq *ifr, bool add) 240 { 241 int error; 242 243 if (add) 244 error = agr_mc_add(ama, ifreq_getaddr(SIOCADDMULTI, ifr)); 245 else 246 error = agr_mc_del(ama, ifreq_getaddr(SIOCDELMULTI, ifr)); 247 248 if (error != ENETRESET) 249 return error; 250 251 return agr_port_foreach(sc, 252 add ? agrport_mc_add_callback : agrport_mc_del_callback, ifr); 253 } 254 255 /* ==================== */ 256 257 int 258 agr_port_getmedia(struct agr_port *port, u_int *media, u_int *status) 259 { 260 struct ifmediareq ifmr; 261 int error; 262 263 memset(&ifmr, 0, sizeof(ifmr)); 264 ifmr.ifm_count = 0; 265 error = agrport_ioctl(port, SIOCGIFMEDIA, (void *)&ifmr); 266 267 if (error == 0) { 268 *media = ifmr.ifm_active; 269 *status = ifmr.ifm_status; 270 } 271 272 return error; 273 } 274
Indexes created Sun Oct 19 02:09:48 GMT 2025