--- zzzz-none-000/linux-3.10.107/net/xfrm/xfrm_state.c 2017-06-27 09:49:32.000000000 +0000 +++ scorpion-7490-727/linux-3.10.107/net/xfrm/xfrm_state.c 2021-02-04 17:41:59.000000000 +0000 @@ -35,13 +35,8 @@ destination/tunnel endpoint. (output) */ -static DEFINE_SPINLOCK(xfrm_state_lock); - static unsigned int xfrm_state_hashmax __read_mostly = 1 * 1024 * 1024; -static struct xfrm_state_afinfo *xfrm_state_get_afinfo(unsigned int family); -static void xfrm_state_put_afinfo(struct xfrm_state_afinfo *afinfo); - static inline unsigned int xfrm_dst_hash(struct net *net, const xfrm_address_t *daddr, const xfrm_address_t *saddr, @@ -102,8 +97,6 @@ return ((state_hmask + 1) << 1) * sizeof(struct hlist_head); } -static DEFINE_MUTEX(hash_resize_mutex); - static void xfrm_hash_resize(struct work_struct *work) { struct net *net = container_of(work, struct net, xfrm.state_hash_work); @@ -112,25 +105,23 @@ unsigned int nhashmask, ohashmask; int i; - mutex_lock(&hash_resize_mutex); - nsize = xfrm_hash_new_size(net->xfrm.state_hmask); ndst = xfrm_hash_alloc(nsize); if (!ndst) - goto out_unlock; + return; nsrc = xfrm_hash_alloc(nsize); if (!nsrc) { xfrm_hash_free(ndst, nsize); - goto out_unlock; + return; } nspi = xfrm_hash_alloc(nsize); if (!nspi) { xfrm_hash_free(ndst, nsize); xfrm_hash_free(nsrc, nsize); - goto out_unlock; + return; } - spin_lock_bh(&xfrm_state_lock); + spin_lock_bh(&net->xfrm.xfrm_state_lock); nhashmask = (nsize / sizeof(struct hlist_head)) - 1U; for (i = net->xfrm.state_hmask; i >= 0; i--) @@ -147,15 +138,12 @@ net->xfrm.state_byspi = nspi; net->xfrm.state_hmask = nhashmask; - spin_unlock_bh(&xfrm_state_lock); + spin_unlock_bh(&net->xfrm.xfrm_state_lock); osize = (ohashmask + 1) * sizeof(struct hlist_head); xfrm_hash_free(odst, osize); xfrm_hash_free(osrc, osize); xfrm_hash_free(ospi, osize); - -out_unlock: - mutex_unlock(&hash_resize_mutex); } static DEFINE_SPINLOCK(xfrm_state_afinfo_lock); @@ -166,6 +154,7 @@ int __xfrm_state_delete(struct xfrm_state *x); int km_query(struct xfrm_state *x, struct xfrm_tmpl *t, struct xfrm_policy *pol); +bool km_is_alive(const struct km_event *c); void km_state_expired(struct xfrm_state *x, int hard, u32 portid); static DEFINE_SPINLOCK(xfrm_type_lock); @@ -377,8 +366,6 @@ hlist_for_each_entry_safe(x, tmp, &gc_list, gclist) xfrm_state_gc_destroy(x); - - wake_up(&net->xfrm.km_waitq); } static inline unsigned long make_jiffies(long secs) @@ -389,11 +376,10 @@ return secs*HZ; } -static enum hrtimer_restart xfrm_timer_handler(struct hrtimer * me) +static enum hrtimer_restart xfrm_timer_handler(struct hrtimer *me) { struct tasklet_hrtimer *thr = container_of(me, struct tasklet_hrtimer, timer); struct xfrm_state *x = container_of(thr, struct xfrm_state, mtimer); - struct net *net = xs_net(x); unsigned long now = get_seconds(); long next = LONG_MAX; int warn = 0; @@ -456,27 +442,21 @@ if (warn) km_state_expired(x, 0, 0); resched: - if (next != LONG_MAX){ + if (next != LONG_MAX) { tasklet_hrtimer_start(&x->mtimer, ktime_set(next, 0), HRTIMER_MODE_REL); } goto out; expired: - if (x->km.state == XFRM_STATE_ACQ && x->id.spi == 0) { + if (x->km.state == XFRM_STATE_ACQ && x->id.spi == 0) x->km.state = XFRM_STATE_EXPIRED; - wake_up(&net->xfrm.km_waitq); - next = 2; - goto resched; - } err = __xfrm_state_delete(x); - if (!err && x->id.spi) + if (!err) km_state_expired(x, 1, 0); - xfrm_audit_state_delete(x, err ? 0 : 1, - audit_get_loginuid(current), - audit_get_sessionid(current), 0); + xfrm_audit_state_delete(x, err ? 0 : 1, true); out: spin_unlock(&x->lock); @@ -499,7 +479,8 @@ INIT_HLIST_NODE(&x->bydst); INIT_HLIST_NODE(&x->bysrc); INIT_HLIST_NODE(&x->byspi); - tasklet_hrtimer_init(&x->mtimer, xfrm_timer_handler, CLOCK_REALTIME, HRTIMER_MODE_ABS); + tasklet_hrtimer_init(&x->mtimer, xfrm_timer_handler, + CLOCK_BOOTTIME, HRTIMER_MODE_ABS); setup_timer(&x->rtimer, xfrm_replay_timer_handler, (unsigned long)x); x->curlft.add_time = get_seconds(); @@ -537,14 +518,14 @@ if (x->km.state != XFRM_STATE_DEAD) { x->km.state = XFRM_STATE_DEAD; - spin_lock(&xfrm_state_lock); + spin_lock(&net->xfrm.xfrm_state_lock); list_del(&x->km.all); hlist_del(&x->bydst); hlist_del(&x->bysrc); if (x->id.spi) hlist_del(&x->byspi); net->xfrm.state_num--; - spin_unlock(&xfrm_state_lock); + spin_unlock(&net->xfrm.xfrm_state_lock); /* All xfrm_state objects are created by xfrm_state_alloc. * The xfrm_state_alloc call gives a reference, and that @@ -572,7 +553,7 @@ #ifdef CONFIG_SECURITY_NETWORK_XFRM static inline int -xfrm_state_flush_secctx_check(struct net *net, u8 proto, struct xfrm_audit *audit_info) +xfrm_state_flush_secctx_check(struct net *net, u8 proto, bool task_valid) { int i, err = 0; @@ -582,10 +563,7 @@ hlist_for_each_entry(x, net->xfrm.state_bydst+i, bydst) { if (xfrm_id_proto_match(x->id.proto, proto) && (err = security_xfrm_state_delete(x)) != 0) { - xfrm_audit_state_delete(x, 0, - audit_info->loginuid, - audit_info->sessionid, - audit_info->secid); + xfrm_audit_state_delete(x, 0, task_valid); return err; } } @@ -595,18 +573,18 @@ } #else static inline int -xfrm_state_flush_secctx_check(struct net *net, u8 proto, struct xfrm_audit *audit_info) +xfrm_state_flush_secctx_check(struct net *net, u8 proto, bool task_valid) { return 0; } #endif -int xfrm_state_flush(struct net *net, u8 proto, struct xfrm_audit *audit_info) +int xfrm_state_flush(struct net *net, u8 proto, bool task_valid) { int i, err = 0, cnt = 0; - spin_lock_bh(&xfrm_state_lock); - err = xfrm_state_flush_secctx_check(net, proto, audit_info); + spin_lock_bh(&net->xfrm.xfrm_state_lock); + err = xfrm_state_flush_secctx_check(net, proto, task_valid); if (err) goto out; @@ -618,18 +596,16 @@ if (!xfrm_state_kern(x) && xfrm_id_proto_match(x->id.proto, proto)) { xfrm_state_hold(x); - spin_unlock_bh(&xfrm_state_lock); + spin_unlock_bh(&net->xfrm.xfrm_state_lock); err = xfrm_state_delete(x); xfrm_audit_state_delete(x, err ? 0 : 1, - audit_info->loginuid, - audit_info->sessionid, - audit_info->secid); + task_valid); xfrm_state_put(x); if (!err) cnt++; - spin_lock_bh(&xfrm_state_lock); + spin_lock_bh(&net->xfrm.xfrm_state_lock); goto restart; } } @@ -638,19 +614,18 @@ err = 0; out: - spin_unlock_bh(&xfrm_state_lock); - wake_up(&net->xfrm.km_waitq); + spin_unlock_bh(&net->xfrm.xfrm_state_lock); return err; } EXPORT_SYMBOL(xfrm_state_flush); void xfrm_sad_getinfo(struct net *net, struct xfrmk_sadinfo *si) { - spin_lock_bh(&xfrm_state_lock); + spin_lock_bh(&net->xfrm.xfrm_state_lock); si->sadcnt = net->xfrm.state_num; si->sadhcnt = net->xfrm.state_hmask; si->sadhmcnt = xfrm_state_hashmax; - spin_unlock_bh(&xfrm_state_lock); + spin_unlock_bh(&net->xfrm.xfrm_state_lock); } EXPORT_SYMBOL(xfrm_sad_getinfo); @@ -800,10 +775,11 @@ struct xfrm_state *best = NULL; u32 mark = pol->mark.v & pol->mark.m; unsigned short encap_family = tmpl->encap_family; + struct km_event c; to_put = NULL; - spin_lock_bh(&xfrm_state_lock); + spin_lock_bh(&net->xfrm.xfrm_state_lock); h = xfrm_dst_hash(net, daddr, saddr, tmpl->reqid, encap_family); hlist_for_each_entry(x, net->xfrm.state_bydst+h, bydst) { if (x->props.family == encap_family && @@ -817,7 +793,7 @@ xfrm_state_look_at(pol, x, fl, encap_family, &best, &acquire_in_progress, &error); } - if (best) + if (best || acquire_in_progress) goto found; h_wildcard = xfrm_dst_hash(net, daddr, &saddr_wildcard, tmpl->reqid, encap_family); @@ -826,7 +802,7 @@ x->props.reqid == tmpl->reqid && (mark & x->mark.m) == x->mark.v && !(x->props.flags & XFRM_STATE_WILDRECV) && - xfrm_state_addr_check(x, daddr, saddr, encap_family) && + xfrm_addr_equal(&x->id.daddr, daddr, encap_family) && tmpl->mode == x->props.mode && tmpl->id.proto == x->id.proto && (tmpl->id.spi == x->id.spi || !tmpl->id.spi)) @@ -844,6 +820,17 @@ error = -EEXIST; goto out; } + + c.net = net; + /* If the KMs have no listeners (yet...), avoid allocating an SA + * for each and every packet - garbage collection might not + * handle the flood. + */ + if (!km_is_alive(&c)) { + error = -ESRCH; + goto out; + } + x = xfrm_state_alloc(net); if (x == NULL) { error = -ENOMEM; @@ -888,7 +875,7 @@ xfrm_state_hold(x); else *err = acquire_in_progress ? -EAGAIN : error; - spin_unlock_bh(&xfrm_state_lock); + spin_unlock_bh(&net->xfrm.xfrm_state_lock); if (to_put) xfrm_state_put(to_put); return x; @@ -902,7 +889,7 @@ unsigned int h; struct xfrm_state *rx = NULL, *x = NULL; - spin_lock(&xfrm_state_lock); + spin_lock_bh(&net->xfrm.xfrm_state_lock); h = xfrm_dst_hash(net, daddr, saddr, reqid, family); hlist_for_each_entry(x, net->xfrm.state_bydst+h, bydst) { if (x->props.family == family && @@ -920,13 +907,35 @@ if (rx) xfrm_state_hold(rx); - spin_unlock(&xfrm_state_lock); + spin_unlock_bh(&net->xfrm.xfrm_state_lock); return rx; } EXPORT_SYMBOL(xfrm_stateonly_find); +struct xfrm_state *xfrm_state_lookup_byspi(struct net *net, __be32 spi, + unsigned short family) +{ + struct xfrm_state *x; + struct xfrm_state_walk *w; + + spin_lock_bh(&net->xfrm.xfrm_state_lock); + list_for_each_entry(w, &net->xfrm.state_all, all) { + x = container_of(w, struct xfrm_state, km); + if (x->props.family != family || + x->id.spi != spi) + continue; + + xfrm_state_hold(x); + spin_unlock_bh(&net->xfrm.xfrm_state_lock); + return x; + } + spin_unlock_bh(&net->xfrm.xfrm_state_lock); + return NULL; +} +EXPORT_SYMBOL(xfrm_state_lookup_byspi); + static void __xfrm_state_insert(struct xfrm_state *x) { struct net *net = xs_net(x); @@ -952,14 +961,12 @@ if (x->replay_maxage) mod_timer(&x->rtimer, jiffies + x->replay_maxage); - wake_up(&net->xfrm.km_waitq); - net->xfrm.state_num++; xfrm_hash_grow_check(net, x->bydst.next != NULL); } -/* xfrm_state_lock is held */ +/* net->xfrm.xfrm_state_lock is held */ static void __xfrm_state_bump_genids(struct xfrm_state *xnew) { struct net *net = xs_net(xnew); @@ -982,19 +989,23 @@ void xfrm_state_insert(struct xfrm_state *x) { - spin_lock_bh(&xfrm_state_lock); + struct net *net = xs_net(x); + + spin_lock_bh(&net->xfrm.xfrm_state_lock); __xfrm_state_bump_genids(x); __xfrm_state_insert(x); - spin_unlock_bh(&xfrm_state_lock); + spin_unlock_bh(&net->xfrm.xfrm_state_lock); } EXPORT_SYMBOL(xfrm_state_insert); -/* xfrm_state_lock is held */ -static struct xfrm_state *__find_acq_core(struct net *net, struct xfrm_mark *m, +/* net->xfrm.xfrm_state_lock is held */ +static struct xfrm_state *__find_acq_core(struct net *net, + const struct xfrm_mark *m, unsigned short family, u8 mode, u32 reqid, u8 proto, const xfrm_address_t *daddr, - const xfrm_address_t *saddr, int create) + const xfrm_address_t *saddr, + int create) { unsigned int h = xfrm_dst_hash(net, daddr, saddr, reqid, family); struct xfrm_state *x; @@ -1032,12 +1043,12 @@ break; case AF_INET6: - *(struct in6_addr *)x->sel.daddr.a6 = *(struct in6_addr *)daddr; - *(struct in6_addr *)x->sel.saddr.a6 = *(struct in6_addr *)saddr; + x->sel.daddr.in6 = daddr->in6; + x->sel.saddr.in6 = saddr->in6; x->sel.prefixlen_d = 128; x->sel.prefixlen_s = 128; - *(struct in6_addr *)x->props.saddr.a6 = *(struct in6_addr *)saddr; - *(struct in6_addr *)x->id.daddr.a6 = *(struct in6_addr *)daddr; + x->props.saddr.in6 = saddr->in6; + x->id.daddr.in6 = daddr->in6; break; } @@ -1079,7 +1090,7 @@ to_put = NULL; - spin_lock_bh(&xfrm_state_lock); + spin_lock_bh(&net->xfrm.xfrm_state_lock); x1 = __xfrm_state_locate(x, use_spi, family); if (x1) { @@ -1108,7 +1119,7 @@ err = 0; out: - spin_unlock_bh(&xfrm_state_lock); + spin_unlock_bh(&net->xfrm.xfrm_state_lock); if (x1) { xfrm_state_delete(x1); @@ -1123,10 +1134,9 @@ EXPORT_SYMBOL(xfrm_state_add); #ifdef CONFIG_XFRM_MIGRATE -static struct xfrm_state *xfrm_state_clone(struct xfrm_state *orig, int *errp) +static struct xfrm_state *xfrm_state_clone(struct xfrm_state *orig) { struct net *net = xs_net(orig); - int err = -ENOMEM; struct xfrm_state *x = xfrm_state_alloc(net); if (!x) goto out; @@ -1147,6 +1157,11 @@ } x->props.aalgo = orig->props.aalgo; + if (orig->aead) { + x->aead = xfrm_algo_aead_clone(orig->aead); + if (!x->aead) + goto error; + } if (orig->ealg) { x->ealg = xfrm_algo_clone(orig->ealg); if (!x->ealg) @@ -1175,20 +1190,21 @@ } if (orig->replay_esn) { - err = xfrm_replay_clone(x, orig); - if (err) + if (xfrm_replay_clone(x, orig)) goto error; } memcpy(&x->mark, &orig->mark, sizeof(x->mark)); - err = xfrm_init_state(x); - if (err) + if (xfrm_init_state(x) < 0) goto error; x->props.flags = orig->props.flags; x->props.extra_flags = orig->props.extra_flags; + x->tfcpad = orig->tfcpad; + x->replay_maxdiff = orig->replay_maxdiff; + x->replay_maxage = orig->replay_maxage; x->curlft.add_time = orig->curlft.add_time; x->km.state = orig->km.state; x->km.seq = orig->km.seq; @@ -1198,21 +1214,20 @@ error: xfrm_state_put(x); out: - if (errp) - *errp = err; return NULL; } -/* xfrm_state_lock is held */ -struct xfrm_state * xfrm_migrate_state_find(struct xfrm_migrate *m) +struct xfrm_state *xfrm_migrate_state_find(struct xfrm_migrate *m, struct net *net) { unsigned int h; - struct xfrm_state *x; + struct xfrm_state *x = NULL; + + spin_lock_bh(&net->xfrm.xfrm_state_lock); if (m->reqid) { - h = xfrm_dst_hash(&init_net, &m->old_daddr, &m->old_saddr, + h = xfrm_dst_hash(net, &m->old_daddr, &m->old_saddr, m->reqid, m->old_family); - hlist_for_each_entry(x, init_net.xfrm.state_bydst+h, bydst) { + hlist_for_each_entry(x, net->xfrm.state_bydst+h, bydst) { if (x->props.mode != m->mode || x->id.proto != m->proto) continue; @@ -1224,12 +1239,12 @@ m->old_family)) continue; xfrm_state_hold(x); - return x; + break; } } else { - h = xfrm_src_hash(&init_net, &m->old_daddr, &m->old_saddr, + h = xfrm_src_hash(net, &m->old_daddr, &m->old_saddr, m->old_family); - hlist_for_each_entry(x, init_net.xfrm.state_bysrc+h, bysrc) { + hlist_for_each_entry(x, net->xfrm.state_bysrc+h, bysrc) { if (x->props.mode != m->mode || x->id.proto != m->proto) continue; @@ -1239,21 +1254,22 @@ m->old_family)) continue; xfrm_state_hold(x); - return x; + break; } } - return NULL; + spin_unlock_bh(&net->xfrm.xfrm_state_lock); + + return x; } EXPORT_SYMBOL(xfrm_migrate_state_find); -struct xfrm_state * xfrm_state_migrate(struct xfrm_state *x, - struct xfrm_migrate *m) +struct xfrm_state *xfrm_state_migrate(struct xfrm_state *x, + struct xfrm_migrate *m) { struct xfrm_state *xc; - int err; - xc = xfrm_state_clone(x, &err); + xc = xfrm_state_clone(x); if (!xc) return NULL; @@ -1266,7 +1282,7 @@ state is to be updated as it is a part of triplet */ xfrm_state_insert(xc); } else { - if ((err = xfrm_state_add(xc)) < 0) + if (xfrm_state_add(xc) < 0) goto error; } @@ -1283,10 +1299,11 @@ struct xfrm_state *x1, *to_put; int err; int use_spi = xfrm_id_proto_match(x->id.proto, IPSEC_PROTO_ANY); + struct net *net = xs_net(x); to_put = NULL; - spin_lock_bh(&xfrm_state_lock); + spin_lock_bh(&net->xfrm.xfrm_state_lock); x1 = __xfrm_state_locate(x, use_spi, x->props.family); err = -ESRCH; @@ -1306,7 +1323,7 @@ err = 0; out: - spin_unlock_bh(&xfrm_state_lock); + spin_unlock_bh(&net->xfrm.xfrm_state_lock); if (to_put) xfrm_state_put(to_put); @@ -1357,7 +1374,7 @@ if (x->curlft.bytes >= x->lft.hard_byte_limit || x->curlft.packets >= x->lft.hard_packet_limit) { x->km.state = XFRM_STATE_EXPIRED; - tasklet_hrtimer_start(&x->mtimer, ktime_set(0,0), HRTIMER_MODE_REL); + tasklet_hrtimer_start(&x->mtimer, ktime_set(0, 0), HRTIMER_MODE_REL); return -EINVAL; } @@ -1377,9 +1394,9 @@ { struct xfrm_state *x; - spin_lock_bh(&xfrm_state_lock); + spin_lock_bh(&net->xfrm.xfrm_state_lock); x = __xfrm_state_lookup(net, mark, daddr, spi, proto, family); - spin_unlock_bh(&xfrm_state_lock); + spin_unlock_bh(&net->xfrm.xfrm_state_lock); return x; } EXPORT_SYMBOL(xfrm_state_lookup); @@ -1391,23 +1408,23 @@ { struct xfrm_state *x; - spin_lock_bh(&xfrm_state_lock); + spin_lock_bh(&net->xfrm.xfrm_state_lock); x = __xfrm_state_lookup_byaddr(net, mark, daddr, saddr, proto, family); - spin_unlock_bh(&xfrm_state_lock); + spin_unlock_bh(&net->xfrm.xfrm_state_lock); return x; } EXPORT_SYMBOL(xfrm_state_lookup_byaddr); struct xfrm_state * -xfrm_find_acq(struct net *net, struct xfrm_mark *mark, u8 mode, u32 reqid, u8 proto, - const xfrm_address_t *daddr, const xfrm_address_t *saddr, - int create, unsigned short family) +xfrm_find_acq(struct net *net, const struct xfrm_mark *mark, u8 mode, u32 reqid, + u8 proto, const xfrm_address_t *daddr, + const xfrm_address_t *saddr, int create, unsigned short family) { struct xfrm_state *x; - spin_lock_bh(&xfrm_state_lock); + spin_lock_bh(&net->xfrm.xfrm_state_lock); x = __find_acq_core(net, mark, family, mode, reqid, proto, daddr, saddr, create); - spin_unlock_bh(&xfrm_state_lock); + spin_unlock_bh(&net->xfrm.xfrm_state_lock); return x; } @@ -1416,17 +1433,17 @@ #ifdef CONFIG_XFRM_SUB_POLICY int xfrm_tmpl_sort(struct xfrm_tmpl **dst, struct xfrm_tmpl **src, int n, - unsigned short family) + unsigned short family, struct net *net) { int err = 0; struct xfrm_state_afinfo *afinfo = xfrm_state_get_afinfo(family); if (!afinfo) return -EAFNOSUPPORT; - spin_lock_bh(&xfrm_state_lock); + spin_lock_bh(&net->xfrm.xfrm_state_lock); /*FIXME*/ if (afinfo->tmpl_sort) err = afinfo->tmpl_sort(dst, src, n); - spin_unlock_bh(&xfrm_state_lock); + spin_unlock_bh(&net->xfrm.xfrm_state_lock); xfrm_state_put_afinfo(afinfo); return err; } @@ -1438,13 +1455,15 @@ { int err = 0; struct xfrm_state_afinfo *afinfo = xfrm_state_get_afinfo(family); + struct net *net = xs_net(*src); + if (!afinfo) return -EAFNOSUPPORT; - spin_lock_bh(&xfrm_state_lock); + spin_lock_bh(&net->xfrm.xfrm_state_lock); if (afinfo->state_sort) err = afinfo->state_sort(dst, src, n); - spin_unlock_bh(&xfrm_state_lock); + spin_unlock_bh(&net->xfrm.xfrm_state_lock); xfrm_state_put_afinfo(afinfo); return err; } @@ -1476,9 +1495,9 @@ { struct xfrm_state *x; - spin_lock_bh(&xfrm_state_lock); + spin_lock_bh(&net->xfrm.xfrm_state_lock); x = __xfrm_find_acq_byseq(net, mark, seq); - spin_unlock_bh(&xfrm_state_lock); + spin_unlock_bh(&net->xfrm.xfrm_state_lock); return x; } EXPORT_SYMBOL(xfrm_find_acq_byseq); @@ -1496,6 +1515,30 @@ } EXPORT_SYMBOL(xfrm_get_acqseq); +int verify_spi_info(u8 proto, u32 min, u32 max) +{ + switch (proto) { + case IPPROTO_AH: + case IPPROTO_ESP: + break; + + case IPPROTO_COMP: + /* IPCOMP spi is 16-bits. */ + if (max >= 0x10000) + return -EINVAL; + break; + + default: + return -EINVAL; + } + + if (min > max) + return -EINVAL; + + return 0; +} +EXPORT_SYMBOL(verify_spi_info); + int xfrm_alloc_spi(struct xfrm_state *x, u32 low, u32 high) { struct net *net = xs_net(x); @@ -1525,8 +1568,8 @@ x->id.spi = minspi; } else { u32 spi = 0; - for (h=0; hid.daddr, htonl(spi), x->id.proto, x->props.family); if (x0 == NULL) { x->id.spi = htonl(spi); @@ -1536,10 +1579,10 @@ } } if (x->id.spi) { - spin_lock_bh(&xfrm_state_lock); + spin_lock_bh(&net->xfrm.xfrm_state_lock); h = xfrm_spi_hash(net, &x->id.daddr, x->id.spi, x->id.proto, x->props.family); hlist_add_head(&x->byspi, net->xfrm.state_byspi+h); - spin_unlock_bh(&xfrm_state_lock); + spin_unlock_bh(&net->xfrm.xfrm_state_lock); err = 0; } @@ -1551,6 +1594,23 @@ } EXPORT_SYMBOL(xfrm_alloc_spi); +static bool __xfrm_state_filter_match(struct xfrm_state *x, + struct xfrm_address_filter *filter) +{ + if (filter) { + if ((filter->family == AF_INET || + filter->family == AF_INET6) && + x->props.family != filter->family) + return false; + + return addr_match(&x->props.saddr, &filter->saddr, + filter->splen) && + addr_match(&x->id.daddr, &filter->daddr, + filter->dplen); + } + return true; +} + int xfrm_state_walk(struct net *net, struct xfrm_state_walk *walk, int (*func)(struct xfrm_state *, int, void*), void *data) @@ -1562,17 +1622,19 @@ if (walk->seq != 0 && list_empty(&walk->all)) return 0; - spin_lock_bh(&xfrm_state_lock); + spin_lock_bh(&net->xfrm.xfrm_state_lock); if (list_empty(&walk->all)) x = list_first_entry(&net->xfrm.state_all, struct xfrm_state_walk, all); else - x = list_entry(&walk->all, struct xfrm_state_walk, all); + x = list_first_entry(&walk->all, struct xfrm_state_walk, all); list_for_each_entry_from(x, &net->xfrm.state_all, all) { if (x->state == XFRM_STATE_DEAD) continue; state = container_of(x, struct xfrm_state, km); if (!xfrm_id_proto_match(state->id.proto, walk->proto)) continue; + if (!__xfrm_state_filter_match(state, walk->filter)) + continue; err = func(state, walk->seq, data); if (err) { list_move_tail(&walk->all, &x->all); @@ -1586,34 +1648,38 @@ } list_del_init(&walk->all); out: - spin_unlock_bh(&xfrm_state_lock); + spin_unlock_bh(&net->xfrm.xfrm_state_lock); return err; } EXPORT_SYMBOL(xfrm_state_walk); -void xfrm_state_walk_init(struct xfrm_state_walk *walk, u8 proto) +void xfrm_state_walk_init(struct xfrm_state_walk *walk, u8 proto, + struct xfrm_address_filter *filter) { INIT_LIST_HEAD(&walk->all); walk->proto = proto; walk->state = XFRM_STATE_DEAD; walk->seq = 0; + walk->filter = filter; } EXPORT_SYMBOL(xfrm_state_walk_init); -void xfrm_state_walk_done(struct xfrm_state_walk *walk) +void xfrm_state_walk_done(struct xfrm_state_walk *walk, struct net *net) { + kfree(walk->filter); + if (list_empty(&walk->all)) return; - spin_lock_bh(&xfrm_state_lock); + spin_lock_bh(&net->xfrm.xfrm_state_lock); list_del(&walk->all); - spin_unlock_bh(&xfrm_state_lock); + spin_unlock_bh(&net->xfrm.xfrm_state_lock); } EXPORT_SYMBOL(xfrm_state_walk_done); static void xfrm_replay_timer_handler(unsigned long data) { - struct xfrm_state *x = (struct xfrm_state*)data; + struct xfrm_state *x = (struct xfrm_state *)data; spin_lock(&x->lock); @@ -1655,16 +1721,12 @@ void km_state_expired(struct xfrm_state *x, int hard, u32 portid) { - struct net *net = xs_net(x); struct km_event c; c.data.hard = hard; c.portid = portid; c.event = XFRM_MSG_EXPIRE; km_state_notify(x, &c); - - if (hard) - wake_up(&net->xfrm.km_waitq); } EXPORT_SYMBOL(km_state_expired); @@ -1707,16 +1769,12 @@ void km_policy_expired(struct xfrm_policy *pol, int dir, int hard, u32 portid) { - struct net *net = xp_net(pol); struct km_event c; c.data.hard = hard; c.portid = portid; c.event = XFRM_MSG_POLEXPIRE; km_policy_notify(pol, dir, &c); - - if (hard) - wake_up(&net->xfrm.km_waitq); } EXPORT_SYMBOL(km_policy_expired); @@ -1762,6 +1820,24 @@ } EXPORT_SYMBOL(km_report); +bool km_is_alive(const struct km_event *c) +{ + struct xfrm_mgr *km; + bool is_alive = false; + + rcu_read_lock(); + list_for_each_entry_rcu(km, &xfrm_km_list, list) { + if (km->is_alive && km->is_alive(c)) { + is_alive = true; + break; + } + } + rcu_read_unlock(); + + return is_alive; +} +EXPORT_SYMBOL(km_is_alive); + int xfrm_user_policy(struct sock *sk, int optname, u8 __user *optval, int optlen) { int err; @@ -1832,7 +1908,7 @@ return -EAFNOSUPPORT; spin_lock_bh(&xfrm_state_afinfo_lock); if (unlikely(xfrm_state_afinfo[afinfo->family] != NULL)) - err = -ENOBUFS; + err = -EEXIST; else rcu_assign_pointer(xfrm_state_afinfo[afinfo->family], afinfo); spin_unlock_bh(&xfrm_state_afinfo_lock); @@ -1860,7 +1936,7 @@ } EXPORT_SYMBOL(xfrm_state_unregister_afinfo); -static struct xfrm_state_afinfo *xfrm_state_get_afinfo(unsigned int family) +struct xfrm_state_afinfo *xfrm_state_get_afinfo(unsigned int family) { struct xfrm_state_afinfo *afinfo; if (unlikely(family >= NPROTO)) @@ -1872,7 +1948,7 @@ return afinfo; } -static void xfrm_state_put_afinfo(struct xfrm_state_afinfo *afinfo) +void xfrm_state_put_afinfo(struct xfrm_state_afinfo *afinfo) { rcu_read_unlock(); } @@ -2025,7 +2101,7 @@ INIT_WORK(&net->xfrm.state_hash_work, xfrm_hash_resize); INIT_HLIST_HEAD(&net->xfrm.state_gc_list); INIT_WORK(&net->xfrm.state_gc_work, xfrm_state_gc_task); - init_waitqueue_head(&net->xfrm.km_waitq); + spin_lock_init(&net->xfrm.xfrm_state_lock); return 0; out_byspi: @@ -2038,14 +2114,10 @@ void xfrm_state_fini(struct net *net) { - struct xfrm_audit audit_info; unsigned int sz; flush_work(&net->xfrm.state_hash_work); - audit_info.loginuid = INVALID_UID; - audit_info.sessionid = -1; - audit_info.secid = 0; - xfrm_state_flush(net, IPSEC_PROTO_ANY, &audit_info); + xfrm_state_flush(net, IPSEC_PROTO_ANY, false); flush_work(&net->xfrm.state_gc_work); WARN_ON(!list_empty(&net->xfrm.state_all)); @@ -2070,7 +2142,7 @@ audit_log_format(audit_buf, " sec_alg=%u sec_doi=%u sec_obj=%s", ctx->ctx_alg, ctx->ctx_doi, ctx->ctx_str); - switch(x->props.family) { + switch (x->props.family) { case AF_INET: audit_log_format(audit_buf, " src=%pI4 dst=%pI4", &x->props.saddr.a4, &x->id.daddr.a4); @@ -2100,7 +2172,7 @@ iph6 = ipv6_hdr(skb); audit_log_format(audit_buf, " src=%pI6 dst=%pI6 flowlbl=0x%x%02x%02x", - &iph6->saddr,&iph6->daddr, + &iph6->saddr, &iph6->daddr, iph6->flow_lbl[0] & 0x0f, iph6->flow_lbl[1], iph6->flow_lbl[2]); @@ -2108,30 +2180,28 @@ } } -void xfrm_audit_state_add(struct xfrm_state *x, int result, - kuid_t auid, u32 sessionid, u32 secid) +void xfrm_audit_state_add(struct xfrm_state *x, int result, bool task_valid) { struct audit_buffer *audit_buf; audit_buf = xfrm_audit_start("SAD-add"); if (audit_buf == NULL) return; - xfrm_audit_helper_usrinfo(auid, sessionid, secid, audit_buf); + xfrm_audit_helper_usrinfo(task_valid, audit_buf); xfrm_audit_helper_sainfo(x, audit_buf); audit_log_format(audit_buf, " res=%u", result); audit_log_end(audit_buf); } EXPORT_SYMBOL_GPL(xfrm_audit_state_add); -void xfrm_audit_state_delete(struct xfrm_state *x, int result, - kuid_t auid, u32 sessionid, u32 secid) +void xfrm_audit_state_delete(struct xfrm_state *x, int result, bool task_valid) { struct audit_buffer *audit_buf; audit_buf = xfrm_audit_start("SAD-delete"); if (audit_buf == NULL) return; - xfrm_audit_helper_usrinfo(auid, sessionid, secid, audit_buf); + xfrm_audit_helper_usrinfo(task_valid, audit_buf); xfrm_audit_helper_sainfo(x, audit_buf); audit_log_format(audit_buf, " res=%u", result); audit_log_end(audit_buf);