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author | mlaier <mlaier@FreeBSD.org> | 2004-06-16 23:03:14 +0000 |
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committer | mlaier <mlaier@FreeBSD.org> | 2004-06-16 23:03:14 +0000 |
commit | 27ecf76342d463232e4a49959506df6807d5e5b9 (patch) | |
tree | 9fc135784e63d43b5a32089b570c21d765bf7266 /sys | |
parent | 18ff3600274a040e5de7283d8307f491d309ab41 (diff) | |
parent | e31d6b9346e110db8eee07eb9643b6b7235bc7f7 (diff) | |
download | FreeBSD-src-27ecf76342d463232e4a49959506df6807d5e5b9.zip FreeBSD-src-27ecf76342d463232e4a49959506df6807d5e5b9.tar.gz |
This commit was generated by cvs2svn to compensate for changes in r130610,
which included commits to RCS files with non-trunk default branches.
Diffstat (limited to 'sys')
-rw-r--r-- | sys/contrib/pf/net/pf_if.c | 840 |
1 files changed, 840 insertions, 0 deletions
diff --git a/sys/contrib/pf/net/pf_if.c b/sys/contrib/pf/net/pf_if.c new file mode 100644 index 0000000..cdc6e36 --- /dev/null +++ b/sys/contrib/pf/net/pf_if.c @@ -0,0 +1,840 @@ +/* $OpenBSD: pf_if.c,v 1.11 2004/03/15 11:38:23 cedric Exp $ */ + +/* + * Copyright (c) 2001 Daniel Hartmeier + * Copyright (c) 2003 Cedric Berger + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * - Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * - Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following + * disclaimer in the documentation and/or other materials provided + * with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS + * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE + * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, + * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER + * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN + * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +#include <sys/param.h> +#include <sys/systm.h> +#include <sys/mbuf.h> +#include <sys/filio.h> +#include <sys/socket.h> +#include <sys/socketvar.h> +#include <sys/kernel.h> +#include <sys/device.h> +#include <sys/time.h> + +#include <net/if.h> +#include <net/if_types.h> + +#include <netinet/in.h> +#include <netinet/in_var.h> +#include <netinet/in_systm.h> +#include <netinet/ip.h> +#include <netinet/ip_var.h> + +#include <net/pfvar.h> + +#ifdef INET6 +#include <netinet/ip6.h> +#endif /* INET6 */ + +#define ACCEPT_FLAGS(oklist) \ + do { \ + if ((flags & ~(oklist)) & \ + PFI_FLAG_ALLMASK) \ + return (EINVAL); \ + } while (0) + +#define senderr(e) do { rv = (e); goto _bad; } while (0) + +struct pfi_kif **pfi_index2kif; +struct pfi_kif *pfi_self; +int pfi_indexlim; +struct pfi_ifhead pfi_ifs; +struct pfi_statehead pfi_statehead; +int pfi_ifcnt; +struct pool pfi_addr_pl; +long pfi_update = 1; +struct pfr_addr *pfi_buffer; +int pfi_buffer_cnt; +int pfi_buffer_max; +char pfi_reserved_anchor[PF_ANCHOR_NAME_SIZE] = + PF_RESERVED_ANCHOR; +char pfi_interface_ruleset[PF_RULESET_NAME_SIZE] = + PF_INTERFACE_RULESET; + +void pfi_dynaddr_update(void *); +void pfi_kifaddr_update(void *); +void pfi_table_update(struct pfr_ktable *, struct pfi_kif *, + int, int); +void pfi_instance_add(struct ifnet *, int, int); +void pfi_address_add(struct sockaddr *, int, int); +int pfi_if_compare(struct pfi_kif *, struct pfi_kif *); +struct pfi_kif *pfi_if_create(const char *, struct pfi_kif *, int); +void pfi_copy_group(char *, const char *, int); +void pfi_dynamic_drivers(void); +void pfi_newgroup(const char *, int); +int pfi_skip_if(const char *, struct pfi_kif *, int); +int pfi_unmask(void *); +void pfi_dohooks(struct pfi_kif *); + +RB_PROTOTYPE(pfi_ifhead, pfi_kif, pfik_tree, pfi_if_compare); +RB_GENERATE(pfi_ifhead, pfi_kif, pfik_tree, pfi_if_compare); + +#define PFI_DYNAMIC_BUSES { "pcmcia", "cardbus", "uhub" } +#define PFI_BUFFER_MAX 0x10000 +#define PFI_MTYPE M_IFADDR + +void +pfi_initialize(void) +{ + if (pfi_self != NULL) /* already initialized */ + return; + + TAILQ_INIT(&pfi_statehead); + pool_init(&pfi_addr_pl, sizeof(struct pfi_dynaddr), 0, 0, 0, + "pfiaddrpl", &pool_allocator_nointr); + pfi_buffer_max = 64; + pfi_buffer = malloc(pfi_buffer_max * sizeof(*pfi_buffer), + PFI_MTYPE, M_WAITOK); + pfi_self = pfi_if_create("self", NULL, PFI_IFLAG_GROUP); + pfi_dynamic_drivers(); +} + +void +pfi_attach_clone(struct if_clone *ifc) +{ + pfi_initialize(); + pfi_newgroup(ifc->ifc_name, PFI_IFLAG_CLONABLE); +} + +void +pfi_attach_ifnet(struct ifnet *ifp) +{ + struct pfi_kif *p, *q, key; + int s; + + pfi_initialize(); + s = splsoftnet(); + pfi_update++; + if (ifp->if_index >= pfi_indexlim) { + /* + * grow pfi_index2kif, similar to ifindex2ifnet code in if.c + */ + size_t m, n, oldlim; + struct pfi_kif **mp, **np; + + oldlim = pfi_indexlim; + if (pfi_indexlim == 0) + pfi_indexlim = 64; + while (ifp->if_index >= pfi_indexlim) + pfi_indexlim <<= 1; + + m = oldlim * sizeof(struct pfi_kif *); + mp = pfi_index2kif; + n = pfi_indexlim * sizeof(struct pfi_kif *); + np = malloc(n, PFI_MTYPE, M_DONTWAIT); + if (np == NULL) + panic("pfi_attach_ifnet: " + "cannot allocate translation table"); + bzero(np, n); + if (mp != NULL) + bcopy(mp, np, m); + pfi_index2kif = np; + if (mp != NULL) + free(mp, PFI_MTYPE); + } + + strlcpy(key.pfik_name, ifp->if_xname, sizeof(key.pfik_name)); + p = RB_FIND(pfi_ifhead, &pfi_ifs, &key); + if (p == NULL) { + /* add group */ + pfi_copy_group(key.pfik_name, ifp->if_xname, + sizeof(key.pfik_name)); + q = RB_FIND(pfi_ifhead, &pfi_ifs, &key); + if (q == NULL) + q = pfi_if_create(key.pfik_name, pfi_self, PFI_IFLAG_GROUP); + if (q == NULL) + panic("pfi_attach_ifnet: " + "cannot allocate '%s' group", key.pfik_name); + + /* add interface */ + p = pfi_if_create(ifp->if_xname, q, PFI_IFLAG_INSTANCE); + if (p == NULL) + panic("pfi_attach_ifnet: " + "cannot allocate '%s' interface", ifp->if_xname); + } else + q = p->pfik_parent; + p->pfik_ifp = ifp; + p->pfik_flags |= PFI_IFLAG_ATTACHED; + p->pfik_ah_cookie = + hook_establish(ifp->if_addrhooks, 1, pfi_kifaddr_update, p); + pfi_index2kif[ifp->if_index] = p; + pfi_dohooks(p); + splx(s); +} + +void +pfi_detach_ifnet(struct ifnet *ifp) +{ + struct pfi_kif *p, *q, key; + int s; + + strlcpy(key.pfik_name, ifp->if_xname, sizeof(key.pfik_name)); + + s = splsoftnet(); + pfi_update++; + p = RB_FIND(pfi_ifhead, &pfi_ifs, &key); + if (p == NULL) { + printf("pfi_detach_ifnet: cannot find %s", ifp->if_xname); + splx(s); + return; + } + hook_disestablish(p->pfik_ifp->if_addrhooks, p->pfik_ah_cookie); + q = p->pfik_parent; + p->pfik_ifp = NULL; + p->pfik_flags &= ~PFI_IFLAG_ATTACHED; + pfi_index2kif[ifp->if_index] = NULL; + pfi_dohooks(p); + pfi_maybe_destroy(p); + splx(s); +} + +struct pfi_kif * +pfi_lookup_create(const char *name) +{ + struct pfi_kif *p, *q, key; + int s; + + s = splsoftnet(); + p = pfi_lookup_if(name); + if (p == NULL) { + pfi_copy_group(key.pfik_name, name, sizeof(key.pfik_name)); + q = pfi_lookup_if(key.pfik_name); + if (q != NULL) + p = pfi_if_create(name, q, PFI_IFLAG_INSTANCE); + } + splx(s); + return (p); +} + +struct pfi_kif * +pfi_attach_rule(const char *name) +{ + struct pfi_kif *p; + + p = pfi_lookup_create(name); + if (p != NULL) + p->pfik_rules++; + return (p); +} + +void +pfi_detach_rule(struct pfi_kif *p) +{ + if (p == NULL) + return; + if (p->pfik_rules > 0) + p->pfik_rules--; + else + printf("pfi_detach_rule: reference count at 0\n"); + pfi_maybe_destroy(p); +} + +void +pfi_attach_state(struct pfi_kif *p) +{ + if (!p->pfik_states++) + TAILQ_INSERT_TAIL(&pfi_statehead, p, pfik_w_states); +} + +void +pfi_detach_state(struct pfi_kif *p) +{ + if (p == NULL) + return; + if (p->pfik_states <= 0) { + printf("pfi_detach_state: reference count <= 0\n"); + return; + } + if (!--p->pfik_states) + TAILQ_REMOVE(&pfi_statehead, p, pfik_w_states); + pfi_maybe_destroy(p); +} + +int +pfi_dynaddr_setup(struct pf_addr_wrap *aw, sa_family_t af) +{ + struct pfi_dynaddr *dyn; + char tblname[PF_TABLE_NAME_SIZE]; + struct pf_ruleset *ruleset = NULL; + int s, rv = 0; + + if (aw->type != PF_ADDR_DYNIFTL) + return (0); + dyn = pool_get(&pfi_addr_pl, PR_NOWAIT); + if (dyn == NULL) + return (1); + bzero(dyn, sizeof(*dyn)); + + s = splsoftnet(); + dyn->pfid_kif = pfi_attach_rule(aw->v.ifname); + if (dyn->pfid_kif == NULL) + senderr(1); + + dyn->pfid_net = pfi_unmask(&aw->v.a.mask); + if (af == AF_INET && dyn->pfid_net == 32) + dyn->pfid_net = 128; + strlcpy(tblname, aw->v.ifname, sizeof(tblname)); + if (aw->iflags & PFI_AFLAG_NETWORK) + strlcat(tblname, ":network", sizeof(tblname)); + if (aw->iflags & PFI_AFLAG_BROADCAST) + strlcat(tblname, ":broadcast", sizeof(tblname)); + if (aw->iflags & PFI_AFLAG_PEER) + strlcat(tblname, ":peer", sizeof(tblname)); + if (aw->iflags & PFI_AFLAG_NOALIAS) + strlcat(tblname, ":0", sizeof(tblname)); + if (dyn->pfid_net != 128) + snprintf(tblname + strlen(tblname), + sizeof(tblname) - strlen(tblname), "/%d", dyn->pfid_net); + ruleset = pf_find_or_create_ruleset(pfi_reserved_anchor, + pfi_interface_ruleset); + if (ruleset == NULL) + senderr(1); + + dyn->pfid_kt = pfr_attach_table(ruleset, tblname); + if (dyn->pfid_kt == NULL) + senderr(1); + + dyn->pfid_kt->pfrkt_flags |= PFR_TFLAG_ACTIVE; + dyn->pfid_iflags = aw->iflags; + dyn->pfid_af = af; + dyn->pfid_hook_cookie = hook_establish(dyn->pfid_kif->pfik_ah_head, 1, + pfi_dynaddr_update, dyn); + if (dyn->pfid_hook_cookie == NULL) + senderr(1); + + aw->p.dyn = dyn; + pfi_dynaddr_update(aw->p.dyn); + splx(s); + return (0); + +_bad: + if (dyn->pfid_kt != NULL) + pfr_detach_table(dyn->pfid_kt); + if (ruleset != NULL) + pf_remove_if_empty_ruleset(ruleset); + if (dyn->pfid_kif != NULL) + pfi_detach_rule(dyn->pfid_kif); + pool_put(&pfi_addr_pl, dyn); + splx(s); + return (rv); +} + +void +pfi_dynaddr_update(void *p) +{ + struct pfi_dynaddr *dyn = (struct pfi_dynaddr *)p; + struct pfi_kif *kif = dyn->pfid_kif; + struct pfr_ktable *kt = dyn->pfid_kt; + + if (dyn == NULL || kif == NULL || kt == NULL) + panic("pfi_dynaddr_update"); + if (kt->pfrkt_larg != pfi_update) { + /* this table needs to be brought up-to-date */ + pfi_table_update(kt, kif, dyn->pfid_net, dyn->pfid_iflags); + kt->pfrkt_larg = pfi_update; + } + pfr_dynaddr_update(kt, dyn); +} + +void +pfi_table_update(struct pfr_ktable *kt, struct pfi_kif *kif, int net, int flags) +{ + int e, size2 = 0; + struct pfi_kif *p; + struct pfr_table t; + + if ((kif->pfik_flags & PFI_IFLAG_INSTANCE) && kif->pfik_ifp == NULL) { + pfr_clr_addrs(&kt->pfrkt_t, NULL, 0); + return; + } + pfi_buffer_cnt = 0; + if ((kif->pfik_flags & PFI_IFLAG_INSTANCE)) + pfi_instance_add(kif->pfik_ifp, net, flags); + else if (strcmp(kif->pfik_name, "self")) { + TAILQ_FOREACH(p, &kif->pfik_grouphead, pfik_instances) + pfi_instance_add(p->pfik_ifp, net, flags); + } else { + RB_FOREACH(p, pfi_ifhead, &pfi_ifs) + if (p->pfik_flags & PFI_IFLAG_INSTANCE) + pfi_instance_add(p->pfik_ifp, net, flags); + } + t = kt->pfrkt_t; + t.pfrt_flags = 0; + if ((e = pfr_set_addrs(&t, pfi_buffer, pfi_buffer_cnt, &size2, + NULL, NULL, NULL, 0))) + printf("pfi_table_update: cannot set %d new addresses " + "into table %s: %d\n", pfi_buffer_cnt, kt->pfrkt_name, e); +} + +void +pfi_instance_add(struct ifnet *ifp, int net, int flags) +{ + struct ifaddr *ia; + int got4 = 0, got6 = 0; + int net2, af; + + if (ifp == NULL) + return; + TAILQ_FOREACH(ia, &ifp->if_addrlist, ifa_list) { + if (ia->ifa_addr == NULL) + continue; + af = ia->ifa_addr->sa_family; + if (af != AF_INET && af != AF_INET6) + continue; + if ((flags & PFI_AFLAG_BROADCAST) && af == AF_INET6) + continue; + if ((flags & PFI_AFLAG_BROADCAST) && + !(ifp->if_flags & IFF_BROADCAST)) + continue; + if ((flags & PFI_AFLAG_PEER) && + !(ifp->if_flags & IFF_POINTOPOINT)) + continue; + if ((flags & PFI_AFLAG_NETWORK) && af == AF_INET6 && + IN6_IS_ADDR_LINKLOCAL( + &((struct sockaddr_in6 *)ia->ifa_addr)->sin6_addr)) + continue; + if (flags & PFI_AFLAG_NOALIAS) { + if (af == AF_INET && got4) + continue; + if (af == AF_INET6 && got6) + continue; + } + if (af == AF_INET) + got4 = 1; + else + got6 = 1; + net2 = net; + if (net2 == 128 && (flags & PFI_AFLAG_NETWORK)) { + if (af == AF_INET) { + net2 = pfi_unmask(&((struct sockaddr_in *) + ia->ifa_netmask)->sin_addr); + } else { + net2 = pfi_unmask(&((struct sockaddr_in6 *) + ia->ifa_netmask)->sin6_addr); + } + } + if (af == AF_INET && net2 > 32) + net2 = 32; + if (flags & PFI_AFLAG_BROADCAST) + pfi_address_add(ia->ifa_broadaddr, af, net2); + else if (flags & PFI_AFLAG_PEER) + pfi_address_add(ia->ifa_dstaddr, af, net2); + else + pfi_address_add(ia->ifa_addr, af, net2); + } +} + +void +pfi_address_add(struct sockaddr *sa, int af, int net) +{ + struct pfr_addr *p; + int i; + + if (pfi_buffer_cnt >= pfi_buffer_max) { + int new_max = pfi_buffer_max * 2; + + if (new_max > PFI_BUFFER_MAX) { + printf("pfi_address_add: address buffer full (%d/%d)\n", + pfi_buffer_cnt, PFI_BUFFER_MAX); + return; + } + p = malloc(new_max * sizeof(*pfi_buffer), PFI_MTYPE, + M_DONTWAIT); + if (p == NULL) { + printf("pfi_address_add: no memory to grow buffer " + "(%d/%d)\n", pfi_buffer_cnt, PFI_BUFFER_MAX); + return; + } + memcpy(pfi_buffer, p, pfi_buffer_cnt * sizeof(*pfi_buffer)); + /* no need to zero buffer */ + free(pfi_buffer, PFI_MTYPE); + pfi_buffer = p; + pfi_buffer_max = new_max; + } + if (af == AF_INET && net > 32) + net = 128; + p = pfi_buffer + pfi_buffer_cnt++; + bzero(p, sizeof(*p)); + p->pfra_af = af; + p->pfra_net = net; + if (af == AF_INET) + p->pfra_ip4addr = ((struct sockaddr_in *)sa)->sin_addr; + if (af == AF_INET6) { + p->pfra_ip6addr = ((struct sockaddr_in6 *)sa)->sin6_addr; + if (IN6_IS_ADDR_LINKLOCAL(&p->pfra_ip6addr)) + p->pfra_ip6addr.s6_addr16[1] = 0; + } + /* mask network address bits */ + if (net < 128) + ((caddr_t)p)[p->pfra_net/8] &= ~(0xFF >> (p->pfra_net%8)); + for (i = (p->pfra_net+7)/8; i < sizeof(p->pfra_u); i++) + ((caddr_t)p)[i] = 0; +} + +void +pfi_dynaddr_remove(struct pf_addr_wrap *aw) +{ + int s; + + if (aw->type != PF_ADDR_DYNIFTL || aw->p.dyn == NULL || + aw->p.dyn->pfid_kif == NULL || aw->p.dyn->pfid_kt == NULL) + return; + + s = splsoftnet(); + hook_disestablish(aw->p.dyn->pfid_kif->pfik_ah_head, + aw->p.dyn->pfid_hook_cookie); + pfi_detach_rule(aw->p.dyn->pfid_kif); + aw->p.dyn->pfid_kif = NULL; + pfr_detach_table(aw->p.dyn->pfid_kt); + aw->p.dyn->pfid_kt = NULL; + pool_put(&pfi_addr_pl, aw->p.dyn); + aw->p.dyn = NULL; + splx(s); +} + +void +pfi_dynaddr_copyout(struct pf_addr_wrap *aw) +{ + if (aw->type != PF_ADDR_DYNIFTL || aw->p.dyn == NULL || + aw->p.dyn->pfid_kif == NULL) + return; + aw->p.dyncnt = aw->p.dyn->pfid_acnt4 + aw->p.dyn->pfid_acnt6; +} + +void +pfi_kifaddr_update(void *v) +{ + int s; + + s = splsoftnet(); + pfi_update++; + pfi_dohooks(v); + splx(s); +} + +int +pfi_if_compare(struct pfi_kif *p, struct pfi_kif *q) +{ + return (strncmp(p->pfik_name, q->pfik_name, IFNAMSIZ)); +} + +struct pfi_kif * +pfi_if_create(const char *name, struct pfi_kif *q, int flags) +{ + struct pfi_kif *p; + + p = malloc(sizeof(*p), PFI_MTYPE, M_DONTWAIT); + if (p == NULL) + return (NULL); + bzero(p, sizeof(*p)); + p->pfik_ah_head = malloc(sizeof(*p->pfik_ah_head), PFI_MTYPE, + M_DONTWAIT); + if (p->pfik_ah_head == NULL) { + free(p, PFI_MTYPE); + return (NULL); + } + bzero(p->pfik_ah_head, sizeof(*p->pfik_ah_head)); + TAILQ_INIT(p->pfik_ah_head); + TAILQ_INIT(&p->pfik_grouphead); + strlcpy(p->pfik_name, name, sizeof(p->pfik_name)); + RB_INIT(&p->pfik_lan_ext); + RB_INIT(&p->pfik_ext_gwy); + p->pfik_flags = flags; + p->pfik_parent = q; + p->pfik_tzero = time.tv_sec; + + RB_INSERT(pfi_ifhead, &pfi_ifs, p); + if (q != NULL) { + q->pfik_addcnt++; + TAILQ_INSERT_TAIL(&q->pfik_grouphead, p, pfik_instances); + } + pfi_ifcnt++; + return (p); +} + +int +pfi_maybe_destroy(struct pfi_kif *p) +{ + int i, j, k, s; + struct pfi_kif *q = p->pfik_parent; + + if ((p->pfik_flags & (PFI_IFLAG_ATTACHED | PFI_IFLAG_GROUP)) || + p->pfik_rules > 0 || p->pfik_states > 0) + return (0); + + s = splsoftnet(); + if (q != NULL) { + for (i = 0; i < 2; i++) + for (j = 0; j < 2; j++) + for (k = 0; k < 2; k++) { + q->pfik_bytes[i][j][k] += + p->pfik_bytes[i][j][k]; + q->pfik_packets[i][j][k] += + p->pfik_packets[i][j][k]; + } + q->pfik_delcnt++; + TAILQ_REMOVE(&q->pfik_grouphead, p, pfik_instances); + } + pfi_ifcnt--; + RB_REMOVE(pfi_ifhead, &pfi_ifs, p); + splx(s); + + free(p->pfik_ah_head, PFI_MTYPE); + free(p, PFI_MTYPE); + return (1); +} + +void +pfi_copy_group(char *p, const char *q, int m) +{ + while (m > 1 && *q && !(*q >= '0' && *q <= '9')) { + *p++ = *q++; + m--; + } + if (m > 0) + *p++ = '\0'; +} + +void +pfi_dynamic_drivers(void) +{ + char *buses[] = PFI_DYNAMIC_BUSES; + int nbuses = sizeof(buses)/sizeof(buses[0]); + int enabled[sizeof(buses)/sizeof(buses[0])]; + struct device *dev; + struct cfdata *cf; + struct cfdriver *drv; + short *p; + int i; + + bzero(enabled, sizeof(enabled)); + TAILQ_FOREACH(dev, &alldevs, dv_list) { + if (!(dev->dv_flags & DVF_ACTIVE)) + continue; + for (i = 0; i < nbuses; i++) + if (!enabled[i] && !strcmp(buses[i], + dev->dv_cfdata->cf_driver->cd_name)) + enabled[i] = 1; + } + for (cf = cfdata; cf->cf_driver; cf++) { + if (cf->cf_driver->cd_class != DV_IFNET) + continue; + for (p = cf->cf_parents; p && *p >= 0; p++) { + if ((drv = cfdata[*p].cf_driver) == NULL) + continue; + for (i = 0; i < nbuses; i++) + if (enabled[i] && + !strcmp(drv->cd_name, buses[i])) + break; + if (i < nbuses) { + pfi_newgroup(cf->cf_driver->cd_name, + PFI_IFLAG_DYNAMIC); + break; + } + } + } +} + +void +pfi_newgroup(const char *name, int flags) +{ + struct pfi_kif *p; + + p = pfi_lookup_if(name); + if (p == NULL) + p = pfi_if_create(name, pfi_self, PFI_IFLAG_GROUP); + if (p == NULL) { + printf("pfi_newgroup: cannot allocate '%s' group", name); + return; + } + p->pfik_flags |= flags; +} + +void +pfi_fill_oldstatus(struct pf_status *pfs) +{ + struct pfi_kif *p, key; + int i, j, k, s; + + strlcpy(key.pfik_name, pfs->ifname, sizeof(key.pfik_name)); + s = splsoftnet(); + p = RB_FIND(pfi_ifhead, &pfi_ifs, &key); + if (p == NULL) { + splx(s); + return; + } + bzero(pfs->pcounters, sizeof(pfs->pcounters)); + bzero(pfs->bcounters, sizeof(pfs->bcounters)); + for (i = 0; i < 2; i++) + for (j = 0; j < 2; j++) + for (k = 0; k < 2; k++) { + pfs->pcounters[i][j][k] = + p->pfik_packets[i][j][k]; + pfs->bcounters[i][j] += + p->pfik_bytes[i][j][k]; + } + splx(s); +} + +int +pfi_clr_istats(const char *name, int *nzero, int flags) +{ + struct pfi_kif *p; + int n = 0, s; + long tzero = time.tv_sec; + + s = splsoftnet(); + ACCEPT_FLAGS(PFI_FLAG_GROUP|PFI_FLAG_INSTANCE); + RB_FOREACH(p, pfi_ifhead, &pfi_ifs) { + if (pfi_skip_if(name, p, flags)) + continue; + bzero(p->pfik_packets, sizeof(p->pfik_packets)); + bzero(p->pfik_bytes, sizeof(p->pfik_bytes)); + p->pfik_tzero = tzero; + n++; + } + splx(s); + if (nzero != NULL) + *nzero = n; + return (0); +} + +int +pfi_get_ifaces(const char *name, struct pfi_if *buf, int *size, int flags) +{ + struct pfi_kif *p; + int s, n = 0; + + ACCEPT_FLAGS(PFI_FLAG_GROUP|PFI_FLAG_INSTANCE); + s = splsoftnet(); + RB_FOREACH(p, pfi_ifhead, &pfi_ifs) { + if (pfi_skip_if(name, p, flags)) + continue; + if (*size > n++) { + if (!p->pfik_tzero) + p->pfik_tzero = boottime.tv_sec; + if (copyout(p, buf++, sizeof(*buf))) { + splx(s); + return (EFAULT); + } + } + } + splx(s); + *size = n; + return (0); +} + +struct pfi_kif * +pfi_lookup_if(const char *name) +{ + struct pfi_kif *p, key; + + strlcpy(key.pfik_name, name, sizeof(key.pfik_name)); + p = RB_FIND(pfi_ifhead, &pfi_ifs, &key); + return (p); +} + +int +pfi_skip_if(const char *filter, struct pfi_kif *p, int f) +{ + int n; + + if ((p->pfik_flags & PFI_IFLAG_GROUP) && !(f & PFI_FLAG_GROUP)) + return (1); + if ((p->pfik_flags & PFI_IFLAG_INSTANCE) && !(f & PFI_FLAG_INSTANCE)) + return (1); + if (filter == NULL || !*filter) + return (0); + if (!strcmp(p->pfik_name, filter)) + return (0); /* exact match */ + n = strlen(filter); + if (n < 1 || n >= IFNAMSIZ) + return (1); /* sanity check */ + if (filter[n-1] >= '0' && filter[n-1] <= '9') + return (1); /* only do exact match in that case */ + if (strncmp(p->pfik_name, filter, n)) + return (1); /* prefix doesn't match */ + return (p->pfik_name[n] < '0' || p->pfik_name[n] > '9'); +} + +/* from pf_print_state.c */ +int +pfi_unmask(void *addr) +{ + struct pf_addr *m = addr; + int i = 31, j = 0, b = 0; + u_int32_t tmp; + + while (j < 4 && m->addr32[j] == 0xffffffff) { + b += 32; + j++; + } + if (j < 4) { + tmp = ntohl(m->addr32[j]); + for (i = 31; tmp & (1 << i); --i) + b++; + } + return (b); +} + +void +pfi_dohooks(struct pfi_kif *p) +{ + for (; p != NULL; p = p->pfik_parent) + dohooks(p->pfik_ah_head, 0); +} + +int +pfi_match_addr(struct pfi_dynaddr *dyn, struct pf_addr *a, sa_family_t af) +{ + if (af == AF_INET) { + switch (dyn->pfid_acnt4) { + case 0: + return (0); + case 1: + return (PF_MATCHA(0, &dyn->pfid_addr4, + &dyn->pfid_mask4, a, AF_INET)); + default: + return (pfr_match_addr(dyn->pfid_kt, a, AF_INET)); + } + } else { + switch (dyn->pfid_acnt6) { + case 0: + return (0); + case 1: + return (PF_MATCHA(0, &dyn->pfid_addr6, + &dyn->pfid_mask6, a, AF_INET6)); + default: + return (pfr_match_addr(dyn->pfid_kt, a, AF_INET6)); + } + } +} |