pf_if.c revision 135215
1190214Srpaulo/* $FreeBSD: head/sys/contrib/pf/net/pf_if.c 135215 2004-09-14 15:20:24Z mlaier $ */ 2190214Srpaulo/* $OpenBSD: pf_if.c,v 1.11 2004/03/15 11:38:23 cedric Exp $ */ 3190214Srpaulo/* add $OpenBSD: pf_if.c,v 1.19 2004/08/11 12:06:44 henning Exp $ */ 4190214Srpaulo 5190214Srpaulo/* 6190214Srpaulo * Copyright (c) 2001 Daniel Hartmeier 7190214Srpaulo * Copyright (c) 2003 Cedric Berger 8190214Srpaulo * All rights reserved. 9190214Srpaulo * 10190214Srpaulo * Redistribution and use in source and binary forms, with or without 11190214Srpaulo * modification, are permitted provided that the following conditions 12190214Srpaulo * are met: 13190214Srpaulo * 14190214Srpaulo * - Redistributions of source code must retain the above copyright 15190214Srpaulo * notice, this list of conditions and the following disclaimer. 16190214Srpaulo * - Redistributions in binary form must reproduce the above 17190214Srpaulo * copyright notice, this list of conditions and the following 18190214Srpaulo * disclaimer in the documentation and/or other materials provided 19190214Srpaulo * with the distribution. 20190214Srpaulo * 21190214Srpaulo * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 22190214Srpaulo * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 23190214Srpaulo * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 24190214Srpaulo * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 25190214Srpaulo * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 26190214Srpaulo * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 27190214Srpaulo * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 28190214Srpaulo * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 29190214Srpaulo * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30190214Srpaulo * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN 31190214Srpaulo * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 32190214Srpaulo * POSSIBILITY OF SUCH DAMAGE. 33190214Srpaulo */ 34190214Srpaulo 35190214Srpaulo#if defined(__FreeBSD__) 36190214Srpaulo#include "opt_inet.h" 37190214Srpaulo#include "opt_inet6.h" 38190214Srpaulo#endif 39190214Srpaulo 40190214Srpaulo#include <sys/param.h> 41190214Srpaulo#include <sys/systm.h> 42190214Srpaulo#ifdef __FreeBSD__ 43190214Srpaulo#include <sys/malloc.h> 44190214Srpaulo#endif 45190214Srpaulo#include <sys/mbuf.h> 46190214Srpaulo#include <sys/filio.h> 47190214Srpaulo#include <sys/socket.h> 48190214Srpaulo#include <sys/socketvar.h> 49190214Srpaulo#include <sys/kernel.h> 50190214Srpaulo#ifndef __FreeBSD__ 51190214Srpaulo#include <sys/device.h> 52190214Srpaulo#endif 53190214Srpaulo#include <sys/time.h> 54190214Srpaulo 55190214Srpaulo#include <net/if.h> 56190214Srpaulo#include <net/if_types.h> 57190214Srpaulo#include <net/route.h> 58190214Srpaulo 59190214Srpaulo#include <netinet/in.h> 60190214Srpaulo#include <netinet/in_var.h> 61190214Srpaulo#include <netinet/in_systm.h> 62190214Srpaulo#include <netinet/ip.h> 63190214Srpaulo#include <netinet/ip_var.h> 64190214Srpaulo 65190214Srpaulo#include <net/pfvar.h> 66190214Srpaulo 67190214Srpaulo#ifdef INET6 68190214Srpaulo#include <netinet/ip6.h> 69190214Srpaulo#endif /* INET6 */ 70190214Srpaulo 71190214Srpaulo#define ACCEPT_FLAGS(oklist) \ 72190214Srpaulo do { \ 73190214Srpaulo if ((flags & ~(oklist)) & \ 74190214Srpaulo PFI_FLAG_ALLMASK) \ 75190214Srpaulo return (EINVAL); \ 76190214Srpaulo } while (0) 77190214Srpaulo 78190214Srpaulo#define senderr(e) do { rv = (e); goto _bad; } while (0) 79190214Srpaulo 80190214Srpaulostruct pfi_kif **pfi_index2kif; 81190214Srpaulostruct pfi_kif *pfi_self, *pfi_dummy; 82190214Srpauloint pfi_indexlim; 83190214Srpaulostruct pfi_ifhead pfi_ifs; 84190214Srpaulostruct pfi_statehead pfi_statehead; 85190214Srpauloint pfi_ifcnt; 86190214Srpaulo#ifdef __FreeBSD__ 87190214Srpaulouma_zone_t pfi_addr_pl; 88190214Srpaulo#else 89190214Srpaulostruct pool pfi_addr_pl; 90190214Srpaulo#endif 91190214Srpaulolong pfi_update = 1; 92190214Srpaulostruct pfr_addr *pfi_buffer; 93190214Srpauloint pfi_buffer_cnt; 94190214Srpauloint pfi_buffer_max; 95190214Srpaulochar pfi_reserved_anchor[PF_ANCHOR_NAME_SIZE] = 96190214Srpaulo PF_RESERVED_ANCHOR; 97190214Srpaulochar pfi_interface_ruleset[PF_RULESET_NAME_SIZE] = 98190214Srpaulo PF_INTERFACE_RULESET; 99190214Srpaulo#ifdef __FreeBSD__ 100190214Srpauloeventhandler_tag pfi_clone_cookie = NULL; 101190214Srpauloeventhandler_tag pfi_attach_cookie = NULL; 102190214Srpauloeventhandler_tag pfi_detach_cookie = NULL; 103190214Srpaulo#endif 104190214Srpaulo 105190214Srpaulovoid pfi_dynaddr_update(void *); 106190214Srpaulovoid pfi_kifaddr_update(void *); 107190214Srpaulovoid pfi_table_update(struct pfr_ktable *, struct pfi_kif *, 108190214Srpaulo int, int); 109190214Srpaulovoid pfi_instance_add(struct ifnet *, int, int); 110190214Srpaulovoid pfi_address_add(struct sockaddr *, int, int); 111190214Srpauloint pfi_if_compare(struct pfi_kif *, struct pfi_kif *); 112190214Srpaulostruct pfi_kif *pfi_if_create(const char *, struct pfi_kif *, int); 113190214Srpaulovoid pfi_copy_group(char *, const char *, int); 114190214Srpaulovoid pfi_dynamic_drivers(void); 115190214Srpaulovoid pfi_newgroup(const char *, int); 116190214Srpauloint pfi_skip_if(const char *, struct pfi_kif *, int); 117190214Srpauloint pfi_unmask(void *); 118190214Srpaulovoid pfi_dohooks(struct pfi_kif *); 119190214Srpaulo#ifdef __FreeBSD__ 120190214Srpaulovoid pfi_kifaddr_update_event(void *, struct ifnet *); 121190214Srpaulovoid pfi_attach_clone_event(void * __unused, struct if_clone *); 122190214Srpaulovoid pfi_attach_ifnet_event(void * __unused, struct ifnet *); 123190214Srpaulovoid pfi_detach_ifnet_event(void * __unused, struct ifnet *); 124190214Srpaulo#endif 125190214Srpaulo 126190214SrpauloRB_PROTOTYPE(pfi_ifhead, pfi_kif, pfik_tree, pfi_if_compare); 127190214SrpauloRB_GENERATE(pfi_ifhead, pfi_kif, pfik_tree, pfi_if_compare); 128190214Srpaulo 129190214Srpaulo#define PFI_DYNAMIC_BUSES { "pcmcia", "cardbus", "uhub" } 130190214Srpaulo#define PFI_BUFFER_MAX 0x10000 131190214Srpaulo#ifdef __FreeBSD__ 132190214SrpauloMALLOC_DEFINE(PFI_MTYPE, "pf_if", "pf interface table"); 133190214Srpaulo#else 134190214Srpaulo#define PFI_MTYPE M_IFADDR 135190214Srpaulo#endif 136190214Srpaulo 137190214Srpaulovoid 138190214Srpaulopfi_initialize(void) 139190214Srpaulo{ 140190214Srpaulo#ifdef __FreeBSD__ 141190214Srpaulo struct ifnet *ifp; 142190214Srpaulo#endif 143190214Srpaulo 144190214Srpaulo if (pfi_self != NULL) /* already initialized */ 145190214Srpaulo return; 146190214Srpaulo 147190214Srpaulo TAILQ_INIT(&pfi_statehead); 148190214Srpaulo#ifndef __FreeBSD__ 149190214Srpaulo pool_init(&pfi_addr_pl, sizeof(struct pfi_dynaddr), 0, 0, 0, 150190214Srpaulo "pfiaddrpl", &pool_allocator_nointr); 151190214Srpaulo#endif 152190214Srpaulo pfi_buffer_max = 64; 153190214Srpaulo pfi_buffer = malloc(pfi_buffer_max * sizeof(*pfi_buffer), 154190214Srpaulo PFI_MTYPE, M_WAITOK); 155190214Srpaulo pfi_self = pfi_if_create("self", NULL, PFI_IFLAG_GROUP); 156190214Srpaulo pfi_dynamic_drivers(); 157190214Srpaulo#ifdef __FreeBSD__ 158190214Srpaulo PF_LOCK(); 159190214Srpaulo IFNET_RLOCK(); 160190214Srpaulo TAILQ_FOREACH(ifp, &ifnet, if_link) 161190214Srpaulo if (ifp->if_dunit != IF_DUNIT_NONE) { 162190214Srpaulo IFNET_RUNLOCK(); 163190214Srpaulo pfi_attach_ifnet(ifp); 164190214Srpaulo IFNET_RLOCK(); 165190214Srpaulo } 166190214Srpaulo IFNET_RUNLOCK(); 167190214Srpaulo PF_UNLOCK(); 168190214Srpaulo pfi_dummy = pfi_if_create("notyet", pfi_self, 169190214Srpaulo PFI_IFLAG_GROUP | PFI_IFLAG_DYNAMIC); 170190214Srpaulo pfi_attach_cookie = EVENTHANDLER_REGISTER(ifnet_arrival_event, 171190214Srpaulo pfi_attach_ifnet_event, NULL, EVENTHANDLER_PRI_ANY); 172190214Srpaulo pfi_detach_cookie = EVENTHANDLER_REGISTER(ifnet_departure_event, 173190214Srpaulo pfi_detach_ifnet_event, NULL, EVENTHANDLER_PRI_ANY); 174190214Srpaulo pfi_clone_cookie = EVENTHANDLER_REGISTER(if_clone_event, 175190214Srpaulo pfi_attach_clone_event, NULL, EVENTHANDLER_PRI_ANY); 176190214Srpaulo#endif 177190214Srpaulo} 178190214Srpaulo 179190214Srpaulo#ifdef __FreeBSD__ 180190214Srpaulovoid 181190214Srpaulopfi_cleanup(void) 182190214Srpaulo{ 183190214Srpaulo struct pfi_kif *p, key; 184190214Srpaulo struct ifnet *ifp; 185190214Srpaulo 186190214Srpaulo PF_ASSERT(MA_OWNED); 187190214Srpaulo 188190214Srpaulo PF_UNLOCK(); 189190214Srpaulo EVENTHANDLER_DEREGISTER(ifnet_arrival_event, pfi_attach_cookie); 190190214Srpaulo EVENTHANDLER_DEREGISTER(ifnet_departure_event, pfi_detach_cookie); 191190214Srpaulo EVENTHANDLER_DEREGISTER(if_clone_event, pfi_clone_cookie); 192190214Srpaulo PF_LOCK(); 193190214Srpaulo 194190214Srpaulo IFNET_RLOCK(); 195190214Srpaulo /* release PFI_IFLAG_INSTANCE */ 196190214Srpaulo TAILQ_FOREACH(ifp, &ifnet, if_link) { 197190214Srpaulo strlcpy(key.pfik_name, ifp->if_xname, sizeof(key.pfik_name)); 198190214Srpaulo p = RB_FIND(pfi_ifhead, &pfi_ifs, &key); 199190214Srpaulo if (p != NULL) { 200190214Srpaulo IFNET_RUNLOCK(); 201190214Srpaulo pfi_detach_ifnet(ifp); 202190214Srpaulo IFNET_RLOCK(); 203190214Srpaulo } 204190214Srpaulo } 205190214Srpaulo IFNET_RUNLOCK(); 206190214Srpaulo 207190214Srpaulo /* XXX clear all other interface group */ 208190214Srpaulo while ((p = RB_MIN(pfi_ifhead, &pfi_ifs))) { 209190214Srpaulo RB_REMOVE(pfi_ifhead, &pfi_ifs, p); 210190214Srpaulo 211190214Srpaulo free(p->pfik_ah_head, PFI_MTYPE); 212190214Srpaulo free(p, PFI_MTYPE); 213190214Srpaulo } 214190214Srpaulo free(pfi_index2kif, PFI_MTYPE); 215190214Srpaulo free(pfi_buffer, PFI_MTYPE); 216190214Srpaulo pfi_index2kif = NULL; 217190214Srpaulo pfi_buffer = NULL; 218190214Srpaulo pfi_self = NULL; 219190214Srpaulo} 220190214Srpaulo 221190214Srpaulo/* 222190214Srpaulo * Wrapper functions for FreeBSD eventhandler 223190214Srpaulo */ 224190214Srpaulovoid 225190214Srpaulopfi_kifaddr_update_event(void *arg, struct ifnet *ifp) 226190214Srpaulo{ 227190214Srpaulo struct pfi_kif *p = arg; 228190214Srpaulo 229190214Srpaulo PF_LOCK(); 230190214Srpaulo /* 231190214Srpaulo * Check to see if it is 'our' interface as we do not have per 232190214Srpaulo * interface hooks and thus get an update for every interface. 233190214Srpaulo */ 234190214Srpaulo if (p && p->pfik_ifp == ifp) 235190214Srpaulo pfi_kifaddr_update(p); 236190214Srpaulo PF_UNLOCK(); 237190214Srpaulo} 238190214Srpaulo 239190214Srpaulovoid 240190214Srpaulopfi_attach_clone_event(void *arg __unused, struct if_clone *ifc) 241190214Srpaulo{ 242190214Srpaulo PF_LOCK(); 243190214Srpaulo pfi_attach_clone(ifc); 244190214Srpaulo PF_UNLOCK(); 245190214Srpaulo} 246190214Srpaulo 247190214Srpaulovoid 248190214Srpaulopfi_attach_ifnet_event(void *arg __unused, struct ifnet *ifp) 249190214Srpaulo{ 250190214Srpaulo PF_LOCK(); 251190214Srpaulo if (ifp->if_dunit != IF_DUNIT_NONE) 252190214Srpaulo pfi_attach_ifnet(ifp); 253190214Srpaulo PF_UNLOCK(); 254190214Srpaulo} 255190214Srpaulo 256190214Srpaulovoid 257190214Srpaulopfi_detach_ifnet_event(void *arg __unused, struct ifnet *ifp) 258190214Srpaulo{ 259190214Srpaulo PF_LOCK(); 260190214Srpaulo pfi_detach_ifnet(ifp); 261190214Srpaulo PF_UNLOCK(); 262190214Srpaulo} 263190214Srpaulo#endif /* __FreeBSD__ */ 264190214Srpaulo 265190214Srpaulovoid 266190214Srpaulopfi_attach_clone(struct if_clone *ifc) 267190214Srpaulo{ 268190214Srpaulo pfi_initialize(); 269190214Srpaulo pfi_newgroup(ifc->ifc_name, PFI_IFLAG_CLONABLE); 270190214Srpaulo} 271190214Srpaulo 272190214Srpaulovoid 273190214Srpaulopfi_attach_ifnet(struct ifnet *ifp) 274190214Srpaulo{ 275190214Srpaulo struct pfi_kif *p, *q, key; 276190214Srpaulo int s; 277190214Srpaulo#ifdef __FreeBSD__ 278190214Srpaulo int realname; 279190214Srpaulo#endif 280190214Srpaulo 281190214Srpaulo pfi_initialize(); 282190214Srpaulo s = splsoftnet(); 283190214Srpaulo pfi_update++; 284190214Srpaulo if (ifp->if_index >= pfi_indexlim) { 285190214Srpaulo /* 286190214Srpaulo * grow pfi_index2kif, similar to ifindex2ifnet code in if.c 287190214Srpaulo */ 288190214Srpaulo size_t m, n, oldlim; 289190214Srpaulo struct pfi_kif **mp, **np; 290190214Srpaulo 291190214Srpaulo oldlim = pfi_indexlim; 292190214Srpaulo if (pfi_indexlim == 0) 293190214Srpaulo pfi_indexlim = 64; 294190214Srpaulo while (ifp->if_index >= pfi_indexlim) 295190214Srpaulo pfi_indexlim <<= 1; 296190214Srpaulo 297190214Srpaulo m = oldlim * sizeof(struct pfi_kif *); 298190214Srpaulo mp = pfi_index2kif; 299190214Srpaulo n = pfi_indexlim * sizeof(struct pfi_kif *); 300190214Srpaulo#ifdef __FreeBSD__ 301190214Srpaulo np = malloc(n, PFI_MTYPE, M_NOWAIT); 302190214Srpaulo#else 303190214Srpaulo np = malloc(n, PFI_MTYPE, M_DONTWAIT); 304190214Srpaulo#endif 305190214Srpaulo if (np == NULL) 306190214Srpaulo panic("pfi_attach_ifnet: " 307190214Srpaulo "cannot allocate translation table"); 308190214Srpaulo bzero(np, n); 309190214Srpaulo if (mp != NULL) 310190214Srpaulo bcopy(mp, np, m); 311190214Srpaulo pfi_index2kif = np; 312190214Srpaulo if (mp != NULL) 313190214Srpaulo free(mp, PFI_MTYPE); 314190214Srpaulo } 315190214Srpaulo 316190214Srpaulo strlcpy(key.pfik_name, ifp->if_xname, sizeof(key.pfik_name)); 317190214Srpaulo p = RB_FIND(pfi_ifhead, &pfi_ifs, &key); 318190214Srpaulo#ifdef __FreeBSD__ 319190214Srpaulo /* some additional trickery for placeholders */ 320190214Srpaulo if ((p == NULL) || (p->pfik_parent == pfi_dummy)) { 321190214Srpaulo /* are we looking at a renamed instance or not? */ 322190214Srpaulo pfi_copy_group(key.pfik_name, ifp->if_xname, 323190214Srpaulo sizeof(key.pfik_name)); 324190214Srpaulo realname = (strncmp(key.pfik_name, ifp->if_dname, 325190214Srpaulo sizeof(key.pfik_name)) == 0); 326190214Srpaulo /* add group */ 327190214Srpaulo /* we can change if_xname, hence use if_dname as group id */ 328190214Srpaulo pfi_copy_group(key.pfik_name, ifp->if_dname, 329190214Srpaulo sizeof(key.pfik_name)); 330190214Srpaulo q = RB_FIND(pfi_ifhead, &pfi_ifs, &key); 331190214Srpaulo if (q == NULL) 332190214Srpaulo q = pfi_if_create(key.pfik_name, pfi_self, 333190214Srpaulo PFI_IFLAG_GROUP|PFI_IFLAG_DYNAMIC); 334190214Srpaulo else if (q->pfik_parent == pfi_dummy) { 335190214Srpaulo q->pfik_parent = pfi_self; 336190214Srpaulo q->pfik_flags = (PFI_IFLAG_GROUP | PFI_IFLAG_DYNAMIC); 337190214Srpaulo } 338190214Srpaulo if (q == NULL) 339190214Srpaulo panic("pfi_attach_ifnet: " 340190214Srpaulo "cannot allocate '%s' group", key.pfik_name); 341190214Srpaulo 342190214Srpaulo /* add/modify interface */ 343190214Srpaulo if (p == NULL) 344190214Srpaulo p = pfi_if_create(ifp->if_xname, q, 345190214Srpaulo realname?PFI_IFLAG_INSTANCE:PFI_IFLAG_PLACEHOLDER); 346190214Srpaulo else { 347190214Srpaulo /* remove from the dummy group */ 348190214Srpaulo /* XXX: copy stats? We should not have any!!! */ 349190214Srpaulo pfi_dummy->pfik_delcnt++; 350190214Srpaulo TAILQ_REMOVE(&pfi_dummy->pfik_grouphead, p, 351190214Srpaulo pfik_instances); 352190214Srpaulo /* move to the right group */ 353190214Srpaulo p->pfik_parent = q; 354190214Srpaulo q->pfik_addcnt++; 355190214Srpaulo TAILQ_INSERT_TAIL(&q->pfik_grouphead, p, 356190214Srpaulo pfik_instances); 357190214Srpaulo if (realname) { 358190214Srpaulo p->pfik_flags &= ~PFI_IFLAG_PLACEHOLDER; 359190214Srpaulo p->pfik_flags |= PFI_IFLAG_INSTANCE; 360190214Srpaulo } 361190214Srpaulo } 362190214Srpaulo if (p == NULL) 363190214Srpaulo panic("pfi_attach_ifnet: " 364190214Srpaulo "cannot allocate '%s' interface", ifp->if_xname); 365190214Srpaulo#else 366190214Srpaulo if (p == NULL) { 367190214Srpaulo /* add group */ 368190214Srpaulo pfi_copy_group(key.pfik_name, ifp->if_xname, 369190214Srpaulo sizeof(key.pfik_name)); 370190214Srpaulo q = RB_FIND(pfi_ifhead, &pfi_ifs, &key); 371190214Srpaulo if (q == NULL) 372190214Srpaulo q = pfi_if_create(key.pfik_name, pfi_self, PFI_IFLAG_GROUP); 373190214Srpaulo else if (q->pfik_parent == pfi_dummy) { 374190214Srpaulo q->pfik_parent = pfi_self; 375190214Srpaulo q->pfik_flags = (PFI_IFLAG_GROUP | PFI_IFLAG_DYNAMIC); 376190214Srpaulo } 377190214Srpaulo if (q == NULL) 378190214Srpaulo panic("pfi_attach_ifnet: " 379190214Srpaulo "cannot allocate '%s' group", key.pfik_name); 380190214Srpaulo 381190214Srpaulo /* add interface */ 382190214Srpaulo p = pfi_if_create(ifp->if_xname, q, PFI_IFLAG_INSTANCE); 383190214Srpaulo if (p == NULL) 384190214Srpaulo panic("pfi_attach_ifnet: " 385190214Srpaulo "cannot allocate '%s' interface", ifp->if_xname); 386190214Srpaulo#endif 387190214Srpaulo } else 388190214Srpaulo q = p->pfik_parent; 389190214Srpaulo p->pfik_ifp = ifp; 390190214Srpaulo p->pfik_flags |= PFI_IFLAG_ATTACHED; 391190214Srpaulo#ifdef __FreeBSD__ 392190214Srpaulo PF_UNLOCK(); 393190214Srpaulo p->pfik_ah_cookie = EVENTHANDLER_REGISTER(ifaddr_event, 394190214Srpaulo pfi_kifaddr_update_event, p, EVENTHANDLER_PRI_ANY); 395190214Srpaulo PF_LOCK(); 396190214Srpaulo#else 397190214Srpaulo p->pfik_ah_cookie = 398190214Srpaulo hook_establish(ifp->if_addrhooks, 1, pfi_kifaddr_update, p); 399190214Srpaulo#endif 400190214Srpaulo pfi_index2kif[ifp->if_index] = p; 401190214Srpaulo pfi_dohooks(p); 402190214Srpaulo splx(s); 403190214Srpaulo} 404190214Srpaulo 405190214Srpaulovoid 406190214Srpaulopfi_detach_ifnet(struct ifnet *ifp) 407190214Srpaulo{ 408190214Srpaulo struct pfi_kif *p, *q, key; 409190214Srpaulo int s; 410190214Srpaulo 411190214Srpaulo strlcpy(key.pfik_name, ifp->if_xname, sizeof(key.pfik_name)); 412190214Srpaulo 413190214Srpaulo s = splsoftnet(); 414190214Srpaulo pfi_update++; 415190214Srpaulo p = RB_FIND(pfi_ifhead, &pfi_ifs, &key); 416190214Srpaulo if (p == NULL) { 417190214Srpaulo printf("pfi_detach_ifnet: cannot find %s", ifp->if_xname); 418190214Srpaulo splx(s); 419190214Srpaulo return; 420190214Srpaulo } 421190214Srpaulo#ifdef __FreeBSD__ 422190214Srpaulo PF_UNLOCK(); 423190214Srpaulo EVENTHANDLER_DEREGISTER(ifaddr_event, p->pfik_ah_cookie); 424190214Srpaulo PF_LOCK(); 425190214Srpaulo#else 426190214Srpaulo hook_disestablish(p->pfik_ifp->if_addrhooks, p->pfik_ah_cookie); 427190214Srpaulo#endif 428190214Srpaulo q = p->pfik_parent; 429190214Srpaulo p->pfik_ifp = NULL; 430190214Srpaulo p->pfik_flags &= ~PFI_IFLAG_ATTACHED; 431190214Srpaulo pfi_index2kif[ifp->if_index] = NULL; 432190214Srpaulo pfi_dohooks(p); 433190214Srpaulo pfi_maybe_destroy(p); 434190214Srpaulo splx(s); 435190214Srpaulo} 436190214Srpaulo 437190214Srpaulostruct pfi_kif * 438190214Srpaulopfi_lookup_create(const char *name) 439190214Srpaulo{ 440190214Srpaulo struct pfi_kif *p, *q, key; 441190214Srpaulo int s; 442190214Srpaulo 443190214Srpaulo s = splsoftnet(); 444190214Srpaulo p = pfi_lookup_if(name); 445190214Srpaulo if (p == NULL) { 446190214Srpaulo pfi_copy_group(key.pfik_name, name, sizeof(key.pfik_name)); 447190214Srpaulo q = pfi_lookup_if(key.pfik_name); 448190214Srpaulo#ifdef __FreeBSD__ 449190214Srpaulo if ((q != NULL) && (q->pfik_parent != pfi_dummy)) 450190214Srpaulo p = pfi_if_create(name, q, PFI_IFLAG_INSTANCE); 451190214Srpaulo else { 452190214Srpaulo if (pfi_dummy == NULL) 453190214Srpaulo panic("no 'notyet' dummy group"); 454190214Srpaulo p = pfi_if_create(name, pfi_dummy, 455190214Srpaulo PFI_IFLAG_PLACEHOLDER); 456190214Srpaulo } 457190214Srpaulo#else 458190214Srpaulo if (q != NULL) 459190214Srpaulo p = pfi_if_create(name, q, PFI_IFLAG_INSTANCE); 460190214Srpaulo#endif 461190214Srpaulo } 462190214Srpaulo splx(s); 463190214Srpaulo return (p); 464190214Srpaulo} 465190214Srpaulo 466190214Srpaulostruct pfi_kif * 467190214Srpaulopfi_attach_rule(const char *name) 468190214Srpaulo{ 469190214Srpaulo struct pfi_kif *p; 470190214Srpaulo 471190214Srpaulo p = pfi_lookup_create(name); 472190214Srpaulo if (p != NULL) 473190214Srpaulo p->pfik_rules++; 474190214Srpaulo return (p); 475190214Srpaulo} 476190214Srpaulo 477190214Srpaulovoid 478190214Srpaulopfi_detach_rule(struct pfi_kif *p) 479190214Srpaulo{ 480190214Srpaulo if (p == NULL) 481190214Srpaulo return; 482190214Srpaulo if (p->pfik_rules > 0) 483190214Srpaulo p->pfik_rules--; 484190214Srpaulo else 485190214Srpaulo printf("pfi_detach_rule: reference count at 0\n"); 486190214Srpaulo pfi_maybe_destroy(p); 487190214Srpaulo} 488190214Srpaulo 489190214Srpaulovoid 490190214Srpaulopfi_attach_state(struct pfi_kif *p) 491190214Srpaulo{ 492190214Srpaulo if (!p->pfik_states++) 493190214Srpaulo TAILQ_INSERT_TAIL(&pfi_statehead, p, pfik_w_states); 494190214Srpaulo} 495190214Srpaulo 496190214Srpaulovoid 497190214Srpaulopfi_detach_state(struct pfi_kif *p) 498190214Srpaulo{ 499190214Srpaulo if (p == NULL) 500190214Srpaulo return; 501190214Srpaulo if (p->pfik_states <= 0) { 502190214Srpaulo printf("pfi_detach_state: reference count <= 0\n"); 503190214Srpaulo return; 504190214Srpaulo } 505190214Srpaulo if (!--p->pfik_states) 506190214Srpaulo TAILQ_REMOVE(&pfi_statehead, p, pfik_w_states); 507190214Srpaulo pfi_maybe_destroy(p); 508190214Srpaulo} 509190214Srpaulo 510190214Srpauloint 511190214Srpaulopfi_dynaddr_setup(struct pf_addr_wrap *aw, sa_family_t af) 512190214Srpaulo{ 513190214Srpaulo struct pfi_dynaddr *dyn; 514190214Srpaulo char tblname[PF_TABLE_NAME_SIZE]; 515190214Srpaulo struct pf_ruleset *ruleset = NULL; 516190214Srpaulo int s, rv = 0; 517190214Srpaulo 518190214Srpaulo if (aw->type != PF_ADDR_DYNIFTL) 519190214Srpaulo return (0); 520190214Srpaulo dyn = pool_get(&pfi_addr_pl, PR_NOWAIT); 521190214Srpaulo if (dyn == NULL) 522190214Srpaulo return (1); 523190214Srpaulo bzero(dyn, sizeof(*dyn)); 524190214Srpaulo 525190214Srpaulo s = splsoftnet(); 526190214Srpaulo dyn->pfid_kif = pfi_attach_rule(aw->v.ifname); 527190214Srpaulo if (dyn->pfid_kif == NULL) 528190214Srpaulo senderr(1); 529190214Srpaulo 530190214Srpaulo dyn->pfid_net = pfi_unmask(&aw->v.a.mask); 531190214Srpaulo if (af == AF_INET && dyn->pfid_net == 32) 532190214Srpaulo dyn->pfid_net = 128; 533190214Srpaulo strlcpy(tblname, aw->v.ifname, sizeof(tblname)); 534190214Srpaulo if (aw->iflags & PFI_AFLAG_NETWORK) 535190214Srpaulo strlcat(tblname, ":network", sizeof(tblname)); 536190214Srpaulo if (aw->iflags & PFI_AFLAG_BROADCAST) 537190214Srpaulo strlcat(tblname, ":broadcast", sizeof(tblname)); 538190214Srpaulo if (aw->iflags & PFI_AFLAG_PEER) 539190214Srpaulo strlcat(tblname, ":peer", sizeof(tblname)); 540190214Srpaulo if (aw->iflags & PFI_AFLAG_NOALIAS) 541190214Srpaulo strlcat(tblname, ":0", sizeof(tblname)); 542190214Srpaulo if (dyn->pfid_net != 128) 543190214Srpaulo snprintf(tblname + strlen(tblname), 544190214Srpaulo sizeof(tblname) - strlen(tblname), "/%d", dyn->pfid_net); 545190214Srpaulo ruleset = pf_find_or_create_ruleset(pfi_reserved_anchor, 546190214Srpaulo pfi_interface_ruleset); 547190214Srpaulo if (ruleset == NULL) 548190214Srpaulo senderr(1); 549190214Srpaulo 550190214Srpaulo dyn->pfid_kt = pfr_attach_table(ruleset, tblname); 551190214Srpaulo if (dyn->pfid_kt == NULL) 552190214Srpaulo senderr(1); 553190214Srpaulo 554190214Srpaulo dyn->pfid_kt->pfrkt_flags |= PFR_TFLAG_ACTIVE; 555190214Srpaulo dyn->pfid_iflags = aw->iflags; 556190214Srpaulo dyn->pfid_af = af; 557190214Srpaulo dyn->pfid_hook_cookie = hook_establish(dyn->pfid_kif->pfik_ah_head, 1, 558190214Srpaulo pfi_dynaddr_update, dyn); 559190214Srpaulo if (dyn->pfid_hook_cookie == NULL) 560190214Srpaulo senderr(1); 561190214Srpaulo 562190214Srpaulo aw->p.dyn = dyn; 563190214Srpaulo pfi_dynaddr_update(aw->p.dyn); 564190214Srpaulo splx(s); 565190214Srpaulo return (0); 566190214Srpaulo 567190214Srpaulo_bad: 568190214Srpaulo if (dyn->pfid_kt != NULL) 569190214Srpaulo pfr_detach_table(dyn->pfid_kt); 570190214Srpaulo if (ruleset != NULL) 571190214Srpaulo pf_remove_if_empty_ruleset(ruleset); 572190214Srpaulo if (dyn->pfid_kif != NULL) 573190214Srpaulo pfi_detach_rule(dyn->pfid_kif); 574190214Srpaulo pool_put(&pfi_addr_pl, dyn); 575190214Srpaulo splx(s); 576190214Srpaulo return (rv); 577190214Srpaulo} 578190214Srpaulo 579190214Srpaulovoid 580190214Srpaulopfi_dynaddr_update(void *p) 581190214Srpaulo{ 582190214Srpaulo struct pfi_dynaddr *dyn = (struct pfi_dynaddr *)p; 583190214Srpaulo struct pfi_kif *kif = dyn->pfid_kif; 584190214Srpaulo struct pfr_ktable *kt = dyn->pfid_kt; 585190214Srpaulo 586190214Srpaulo if (dyn == NULL || kif == NULL || kt == NULL) 587190214Srpaulo panic("pfi_dynaddr_update"); 588190214Srpaulo if (kt->pfrkt_larg != pfi_update) { 589190214Srpaulo /* this table needs to be brought up-to-date */ 590190214Srpaulo pfi_table_update(kt, kif, dyn->pfid_net, dyn->pfid_iflags); 591190214Srpaulo kt->pfrkt_larg = pfi_update; 592190214Srpaulo } 593190214Srpaulo pfr_dynaddr_update(kt, dyn); 594190214Srpaulo} 595190214Srpaulo 596190214Srpaulovoid 597190214Srpaulopfi_table_update(struct pfr_ktable *kt, struct pfi_kif *kif, int net, int flags) 598190214Srpaulo{ 599190214Srpaulo int e, size2 = 0; 600190214Srpaulo struct pfi_kif *p; 601190214Srpaulo struct pfr_table t; 602190214Srpaulo 603190214Srpaulo if ((kif->pfik_flags & PFI_IFLAG_INSTANCE) && kif->pfik_ifp == NULL) { 604190214Srpaulo pfr_clr_addrs(&kt->pfrkt_t, NULL, 0); 605190214Srpaulo return; 606190214Srpaulo } 607190214Srpaulo pfi_buffer_cnt = 0; 608190214Srpaulo if ((kif->pfik_flags & PFI_IFLAG_INSTANCE)) 609190214Srpaulo pfi_instance_add(kif->pfik_ifp, net, flags); 610190214Srpaulo else if (strcmp(kif->pfik_name, "self")) { 611190214Srpaulo TAILQ_FOREACH(p, &kif->pfik_grouphead, pfik_instances) 612190214Srpaulo pfi_instance_add(p->pfik_ifp, net, flags); 613190214Srpaulo } else { 614190214Srpaulo RB_FOREACH(p, pfi_ifhead, &pfi_ifs) 615190214Srpaulo if (p->pfik_flags & PFI_IFLAG_INSTANCE) 616190214Srpaulo pfi_instance_add(p->pfik_ifp, net, flags); 617190214Srpaulo } 618190214Srpaulo t = kt->pfrkt_t; 619190214Srpaulo t.pfrt_flags = 0; 620190214Srpaulo if ((e = pfr_set_addrs(&t, pfi_buffer, pfi_buffer_cnt, &size2, 621190214Srpaulo NULL, NULL, NULL, 0))) 622190214Srpaulo printf("pfi_table_update: cannot set %d new addresses " 623190214Srpaulo "into table %s: %d\n", pfi_buffer_cnt, kt->pfrkt_name, e); 624190214Srpaulo} 625190214Srpaulo 626190214Srpaulovoid 627190214Srpaulopfi_instance_add(struct ifnet *ifp, int net, int flags) 628190214Srpaulo{ 629190214Srpaulo struct ifaddr *ia; 630190214Srpaulo int got4 = 0, got6 = 0; 631190214Srpaulo int net2, af; 632190214Srpaulo 633 if (ifp == NULL) 634 return; 635 TAILQ_FOREACH(ia, &ifp->if_addrlist, ifa_list) { 636 if (ia->ifa_addr == NULL) 637 continue; 638 af = ia->ifa_addr->sa_family; 639 if (af != AF_INET && af != AF_INET6) 640 continue; 641#ifdef __FreeBSD__ 642 /* 643 * XXX: For point-to-point interfaces, (ifname:0) and IPv4, 644 * jump over addresses without a proper route to work 645 * around a problem with ppp not fully removing the 646 * address used during IPCP. 647 */ 648 if ((ifp->if_flags & IFF_POINTOPOINT) && 649 !(ia->ifa_flags & IFA_ROUTE) && 650 (flags & PFI_AFLAG_NOALIAS) && (af == AF_INET)) 651 continue; 652#endif 653 if ((flags & PFI_AFLAG_BROADCAST) && af == AF_INET6) 654 continue; 655 if ((flags & PFI_AFLAG_BROADCAST) && 656 !(ifp->if_flags & IFF_BROADCAST)) 657 continue; 658 if ((flags & PFI_AFLAG_PEER) && 659 !(ifp->if_flags & IFF_POINTOPOINT)) 660 continue; 661 if ((flags & PFI_AFLAG_NETWORK) && af == AF_INET6 && 662 IN6_IS_ADDR_LINKLOCAL( 663 &((struct sockaddr_in6 *)ia->ifa_addr)->sin6_addr)) 664 continue; 665 if (flags & PFI_AFLAG_NOALIAS) { 666 if (af == AF_INET && got4) 667 continue; 668 if (af == AF_INET6 && got6) 669 continue; 670 } 671 if (af == AF_INET) 672 got4 = 1; 673 else 674 got6 = 1; 675 net2 = net; 676 if (net2 == 128 && (flags & PFI_AFLAG_NETWORK)) { 677 if (af == AF_INET) { 678 net2 = pfi_unmask(&((struct sockaddr_in *) 679 ia->ifa_netmask)->sin_addr); 680 } else { 681 net2 = pfi_unmask(&((struct sockaddr_in6 *) 682 ia->ifa_netmask)->sin6_addr); 683 } 684 } 685 if (af == AF_INET && net2 > 32) 686 net2 = 32; 687 if (flags & PFI_AFLAG_BROADCAST) 688 pfi_address_add(ia->ifa_broadaddr, af, net2); 689 else if (flags & PFI_AFLAG_PEER) 690 pfi_address_add(ia->ifa_dstaddr, af, net2); 691 else 692 pfi_address_add(ia->ifa_addr, af, net2); 693 } 694} 695 696void 697pfi_address_add(struct sockaddr *sa, int af, int net) 698{ 699 struct pfr_addr *p; 700 int i; 701 702 if (pfi_buffer_cnt >= pfi_buffer_max) { 703 int new_max = pfi_buffer_max * 2; 704 705 if (new_max > PFI_BUFFER_MAX) { 706 printf("pfi_address_add: address buffer full (%d/%d)\n", 707 pfi_buffer_cnt, PFI_BUFFER_MAX); 708 return; 709 } 710#ifdef __FreeBSD__ 711 p = malloc(new_max * sizeof(*pfi_buffer), PFI_MTYPE, 712 M_NOWAIT); 713#else 714 p = malloc(new_max * sizeof(*pfi_buffer), PFI_MTYPE, 715 M_DONTWAIT); 716#endif 717 if (p == NULL) { 718 printf("pfi_address_add: no memory to grow buffer " 719 "(%d/%d)\n", pfi_buffer_cnt, PFI_BUFFER_MAX); 720 return; 721 } 722 memcpy(pfi_buffer, p, pfi_buffer_cnt * sizeof(*pfi_buffer)); 723 /* no need to zero buffer */ 724 free(pfi_buffer, PFI_MTYPE); 725 pfi_buffer = p; 726 pfi_buffer_max = new_max; 727 } 728 if (af == AF_INET && net > 32) 729 net = 128; 730 p = pfi_buffer + pfi_buffer_cnt++; 731 bzero(p, sizeof(*p)); 732 p->pfra_af = af; 733 p->pfra_net = net; 734 if (af == AF_INET) 735 p->pfra_ip4addr = ((struct sockaddr_in *)sa)->sin_addr; 736 if (af == AF_INET6) { 737 p->pfra_ip6addr = ((struct sockaddr_in6 *)sa)->sin6_addr; 738 if (IN6_IS_ADDR_LINKLOCAL(&p->pfra_ip6addr)) 739 p->pfra_ip6addr.s6_addr16[1] = 0; 740 } 741 /* mask network address bits */ 742 if (net < 128) 743 ((caddr_t)p)[p->pfra_net/8] &= ~(0xFF >> (p->pfra_net%8)); 744 for (i = (p->pfra_net+7)/8; i < sizeof(p->pfra_u); i++) 745 ((caddr_t)p)[i] = 0; 746} 747 748void 749pfi_dynaddr_remove(struct pf_addr_wrap *aw) 750{ 751 int s; 752 753 if (aw->type != PF_ADDR_DYNIFTL || aw->p.dyn == NULL || 754 aw->p.dyn->pfid_kif == NULL || aw->p.dyn->pfid_kt == NULL) 755 return; 756 757 s = splsoftnet(); 758 hook_disestablish(aw->p.dyn->pfid_kif->pfik_ah_head, 759 aw->p.dyn->pfid_hook_cookie); 760 pfi_detach_rule(aw->p.dyn->pfid_kif); 761 aw->p.dyn->pfid_kif = NULL; 762 pfr_detach_table(aw->p.dyn->pfid_kt); 763 aw->p.dyn->pfid_kt = NULL; 764 pool_put(&pfi_addr_pl, aw->p.dyn); 765 aw->p.dyn = NULL; 766 splx(s); 767} 768 769void 770pfi_dynaddr_copyout(struct pf_addr_wrap *aw) 771{ 772 if (aw->type != PF_ADDR_DYNIFTL || aw->p.dyn == NULL || 773 aw->p.dyn->pfid_kif == NULL) 774 return; 775 aw->p.dyncnt = aw->p.dyn->pfid_acnt4 + aw->p.dyn->pfid_acnt6; 776} 777 778void 779pfi_kifaddr_update(void *v) 780{ 781 int s; 782 783 s = splsoftnet(); 784 pfi_update++; 785 pfi_dohooks(v); 786 splx(s); 787} 788 789int 790pfi_if_compare(struct pfi_kif *p, struct pfi_kif *q) 791{ 792 return (strncmp(p->pfik_name, q->pfik_name, IFNAMSIZ)); 793} 794 795struct pfi_kif * 796pfi_if_create(const char *name, struct pfi_kif *q, int flags) 797{ 798 struct pfi_kif *p; 799 800#ifdef __FreeBSD__ 801 p = malloc(sizeof(*p), PFI_MTYPE, M_NOWAIT); 802#else 803 p = malloc(sizeof(*p), PFI_MTYPE, M_DONTWAIT); 804#endif 805 if (p == NULL) 806 return (NULL); 807 bzero(p, sizeof(*p)); 808#ifdef __FreeBSD__ 809 p->pfik_ah_head = malloc(sizeof(*p->pfik_ah_head), PFI_MTYPE, 810 M_NOWAIT); 811#else 812 p->pfik_ah_head = malloc(sizeof(*p->pfik_ah_head), PFI_MTYPE, 813 M_DONTWAIT); 814#endif 815 if (p->pfik_ah_head == NULL) { 816 free(p, PFI_MTYPE); 817 return (NULL); 818 } 819 bzero(p->pfik_ah_head, sizeof(*p->pfik_ah_head)); 820 TAILQ_INIT(p->pfik_ah_head); 821 TAILQ_INIT(&p->pfik_grouphead); 822 strlcpy(p->pfik_name, name, sizeof(p->pfik_name)); 823 RB_INIT(&p->pfik_lan_ext); 824 RB_INIT(&p->pfik_ext_gwy); 825 p->pfik_flags = flags; 826 p->pfik_parent = q; 827#ifdef __FreeBSD__ 828 p->pfik_tzero = time_second; 829#else 830 p->pfik_tzero = time.tv_sec; 831#endif 832 833 RB_INSERT(pfi_ifhead, &pfi_ifs, p); 834 if (q != NULL) { 835 q->pfik_addcnt++; 836 TAILQ_INSERT_TAIL(&q->pfik_grouphead, p, pfik_instances); 837 } 838 pfi_ifcnt++; 839 return (p); 840} 841 842int 843pfi_maybe_destroy(struct pfi_kif *p) 844{ 845 int i, j, k, s; 846 struct pfi_kif *q = p->pfik_parent; 847 848 if ((p->pfik_flags & (PFI_IFLAG_ATTACHED | PFI_IFLAG_GROUP)) || 849 p->pfik_rules > 0 || p->pfik_states > 0) 850#ifdef __FreeBSD__ 851 if (!(p->pfik_flags & PFI_IFLAG_PLACEHOLDER)) 852#endif 853 return (0); 854 855 s = splsoftnet(); 856 if (q != NULL) { 857 for (i = 0; i < 2; i++) 858 for (j = 0; j < 2; j++) 859 for (k = 0; k < 2; k++) { 860 q->pfik_bytes[i][j][k] += 861 p->pfik_bytes[i][j][k]; 862 q->pfik_packets[i][j][k] += 863 p->pfik_packets[i][j][k]; 864#ifdef __FreeBSD__ 865 /* clear stats in case we return to the dummy group */ 866 p->pfik_bytes[i][j][k] = 0; 867 p->pfik_packets[i][j][k] = 0; 868#endif 869 } 870 q->pfik_delcnt++; 871 TAILQ_REMOVE(&q->pfik_grouphead, p, pfik_instances); 872 } 873#ifdef __FreeBSD__ 874 if (p->pfik_rules > 0 || p->pfik_states > 0) { 875 /* move back to the dummy group */ 876 p->pfik_parent = pfi_dummy; 877 pfi_dummy->pfik_addcnt++; 878 TAILQ_INSERT_TAIL(&pfi_dummy->pfik_grouphead, p, 879 pfik_instances); 880 return (0); 881 } 882#endif 883 pfi_ifcnt--; 884 RB_REMOVE(pfi_ifhead, &pfi_ifs, p); 885 splx(s); 886 887 free(p->pfik_ah_head, PFI_MTYPE); 888 free(p, PFI_MTYPE); 889 return (1); 890} 891 892void 893pfi_copy_group(char *p, const char *q, int m) 894{ 895 while (m > 1 && *q && !(*q >= '0' && *q <= '9')) { 896 *p++ = *q++; 897 m--; 898 } 899 if (m > 0) 900 *p++ = '\0'; 901} 902 903void 904pfi_dynamic_drivers(void) 905{ 906#ifdef __FreeBSD__ 907 struct ifnet *ifp; 908 909/* 910 * For FreeBSD basically every interface is "dynamic" as we can unload 911 * modules e.g. 912 */ 913 914 IFNET_RLOCK(); 915 TAILQ_FOREACH(ifp, &ifnet, if_link) { 916 if (ifp->if_dunit == IF_DUNIT_NONE) 917 continue; 918 pfi_newgroup(ifp->if_dname, PFI_IFLAG_DYNAMIC); 919 } 920 IFNET_RUNLOCK(); 921#else 922 char *buses[] = PFI_DYNAMIC_BUSES; 923 int nbuses = sizeof(buses)/sizeof(buses[0]); 924 int enabled[sizeof(buses)/sizeof(buses[0])]; 925 struct device *dev; 926 struct cfdata *cf; 927 struct cfdriver *drv; 928 short *p; 929 int i; 930 931 bzero(enabled, sizeof(enabled)); 932 TAILQ_FOREACH(dev, &alldevs, dv_list) { 933 if (!(dev->dv_flags & DVF_ACTIVE)) 934 continue; 935 for (i = 0; i < nbuses; i++) 936 if (!enabled[i] && !strcmp(buses[i], 937 dev->dv_cfdata->cf_driver->cd_name)) 938 enabled[i] = 1; 939 } 940 for (cf = cfdata; cf->cf_driver; cf++) { 941 if (cf->cf_driver->cd_class != DV_IFNET) 942 continue; 943 for (p = cf->cf_parents; p && *p >= 0; p++) { 944 if ((drv = cfdata[*p].cf_driver) == NULL) 945 continue; 946 for (i = 0; i < nbuses; i++) 947 if (enabled[i] && 948 !strcmp(drv->cd_name, buses[i])) 949 break; 950 if (i < nbuses) { 951 pfi_newgroup(cf->cf_driver->cd_name, 952 PFI_IFLAG_DYNAMIC); 953 break; 954 } 955 } 956 } 957#endif 958} 959 960void 961pfi_newgroup(const char *name, int flags) 962{ 963 struct pfi_kif *p; 964 965 p = pfi_lookup_if(name); 966 if (p == NULL) 967 p = pfi_if_create(name, pfi_self, PFI_IFLAG_GROUP); 968 if (p == NULL) { 969 printf("pfi_newgroup: cannot allocate '%s' group", name); 970 return; 971 } 972 p->pfik_flags |= flags; 973} 974 975void 976pfi_fill_oldstatus(struct pf_status *pfs) 977{ 978 struct pfi_kif *p, key; 979 int i, j, k, s; 980 981 strlcpy(key.pfik_name, pfs->ifname, sizeof(key.pfik_name)); 982 s = splsoftnet(); 983 p = RB_FIND(pfi_ifhead, &pfi_ifs, &key); 984 if (p == NULL) { 985 splx(s); 986 return; 987 } 988 bzero(pfs->pcounters, sizeof(pfs->pcounters)); 989 bzero(pfs->bcounters, sizeof(pfs->bcounters)); 990 for (i = 0; i < 2; i++) 991 for (j = 0; j < 2; j++) 992 for (k = 0; k < 2; k++) { 993 pfs->pcounters[i][j][k] = 994 p->pfik_packets[i][j][k]; 995 pfs->bcounters[i][j] += 996 p->pfik_bytes[i][j][k]; 997 } 998 splx(s); 999} 1000 1001int 1002pfi_clr_istats(const char *name, int *nzero, int flags) 1003{ 1004 struct pfi_kif *p; 1005 int n = 0, s; 1006#ifdef __FreeBSD__ 1007 long tzero = time_second; 1008#else 1009 long tzero = time.tv_sec; 1010#endif 1011 1012 s = splsoftnet(); 1013 ACCEPT_FLAGS(PFI_FLAG_GROUP|PFI_FLAG_INSTANCE); 1014 RB_FOREACH(p, pfi_ifhead, &pfi_ifs) { 1015 if (pfi_skip_if(name, p, flags)) 1016 continue; 1017 bzero(p->pfik_packets, sizeof(p->pfik_packets)); 1018 bzero(p->pfik_bytes, sizeof(p->pfik_bytes)); 1019 p->pfik_tzero = tzero; 1020 n++; 1021 } 1022 splx(s); 1023 if (nzero != NULL) 1024 *nzero = n; 1025 return (0); 1026} 1027 1028int 1029pfi_get_ifaces(const char *name, struct pfi_if *buf, int *size, int flags) 1030{ 1031 struct pfi_kif *p; 1032 int s, n = 0; 1033#ifdef __FreeBSD__ 1034 int ec; 1035#endif 1036 1037 ACCEPT_FLAGS(PFI_FLAG_GROUP|PFI_FLAG_INSTANCE); 1038 s = splsoftnet(); 1039 RB_FOREACH(p, pfi_ifhead, &pfi_ifs) { 1040 if (pfi_skip_if(name, p, flags)) 1041 continue; 1042 if (*size > n++) { 1043 if (!p->pfik_tzero) 1044 p->pfik_tzero = boottime.tv_sec; 1045#ifdef __FreeBSD__ 1046 PF_COPYOUT(p, buf++, sizeof(*buf), ec); 1047 if (ec) { 1048#else 1049 if (copyout(p, buf++, sizeof(*buf))) { 1050#endif 1051 splx(s); 1052 return (EFAULT); 1053 } 1054 } 1055 } 1056 splx(s); 1057 *size = n; 1058 return (0); 1059} 1060 1061struct pfi_kif * 1062pfi_lookup_if(const char *name) 1063{ 1064 struct pfi_kif *p, key; 1065 1066 strlcpy(key.pfik_name, name, sizeof(key.pfik_name)); 1067 p = RB_FIND(pfi_ifhead, &pfi_ifs, &key); 1068 return (p); 1069} 1070 1071int 1072pfi_skip_if(const char *filter, struct pfi_kif *p, int f) 1073{ 1074 int n; 1075 1076 if ((p->pfik_flags & PFI_IFLAG_GROUP) && !(f & PFI_FLAG_GROUP)) 1077 return (1); 1078 if ((p->pfik_flags & PFI_IFLAG_INSTANCE) && !(f & PFI_FLAG_INSTANCE)) 1079 return (1); 1080 if (filter == NULL || !*filter) 1081 return (0); 1082 if (!strcmp(p->pfik_name, filter)) 1083 return (0); /* exact match */ 1084 n = strlen(filter); 1085 if (n < 1 || n >= IFNAMSIZ) 1086 return (1); /* sanity check */ 1087 if (filter[n-1] >= '0' && filter[n-1] <= '9') 1088 return (1); /* only do exact match in that case */ 1089 if (strncmp(p->pfik_name, filter, n)) 1090 return (1); /* prefix doesn't match */ 1091 return (p->pfik_name[n] < '0' || p->pfik_name[n] > '9'); 1092} 1093 1094/* from pf_print_state.c */ 1095int 1096pfi_unmask(void *addr) 1097{ 1098 struct pf_addr *m = addr; 1099 int i = 31, j = 0, b = 0; 1100 u_int32_t tmp; 1101 1102 while (j < 4 && m->addr32[j] == 0xffffffff) { 1103 b += 32; 1104 j++; 1105 } 1106 if (j < 4) { 1107 tmp = ntohl(m->addr32[j]); 1108 for (i = 31; tmp & (1 << i); --i) 1109 b++; 1110 } 1111 return (b); 1112} 1113 1114void 1115pfi_dohooks(struct pfi_kif *p) 1116{ 1117 for (; p != NULL; p = p->pfik_parent) 1118 dohooks(p->pfik_ah_head, 0); 1119} 1120 1121int 1122pfi_match_addr(struct pfi_dynaddr *dyn, struct pf_addr *a, sa_family_t af) 1123{ 1124 if (af == AF_INET) { 1125 switch (dyn->pfid_acnt4) { 1126 case 0: 1127 return (0); 1128 case 1: 1129 return (PF_MATCHA(0, &dyn->pfid_addr4, 1130 &dyn->pfid_mask4, a, AF_INET)); 1131 default: 1132 return (pfr_match_addr(dyn->pfid_kt, a, AF_INET)); 1133 } 1134 } else { 1135 switch (dyn->pfid_acnt6) { 1136 case 0: 1137 return (0); 1138 case 1: 1139 return (PF_MATCHA(0, &dyn->pfid_addr6, 1140 &dyn->pfid_mask6, a, AF_INET6)); 1141 default: 1142 return (pfr_match_addr(dyn->pfid_kt, a, AF_INET6)); 1143 } 1144 } 1145} 1146