From ff8cf9a93800e8118ea097c1aba7203d59a0f3f1 Mon Sep 17 00:00:00 2001 From: John Dykstra Date: Wed, 11 Mar 2009 09:22:51 -0700 Subject: ipv6: Fix BUG when disabled ipv6 module is unloaded Do not try to "uninitialize" ipv6 if its initialization had been skipped because module parameter disable=1 had been specified. Reported-by: Thomas Backlund Signed-off-by: John Dykstra Acked-by: Brian Haley Signed-off-by: David S. Miller --- net/ipv6/af_inet6.c | 3 +++ 1 file changed, 3 insertions(+) (limited to 'net') diff --git a/net/ipv6/af_inet6.c b/net/ipv6/af_inet6.c index da944eca2ca6..9c8309ed35cf 100644 --- a/net/ipv6/af_inet6.c +++ b/net/ipv6/af_inet6.c @@ -1192,6 +1192,9 @@ module_init(inet6_init); static void __exit inet6_exit(void) { + if (disable_ipv6) + return; + /* First of all disallow new sockets creation. */ sock_unregister(PF_INET6); /* Disallow any further netlink messages */ -- cgit v1.2.3-59-g8ed1b From 08ec9af1c0622b0858099a8644a33af02dd3019f Mon Sep 17 00:00:00 2001 From: "David S. Miller" Date: Fri, 13 Mar 2009 14:22:40 -0700 Subject: xfrm: Fix xfrm_state_find() wrt. wildcard source address. The change to make xfrm_state objects hash on source address broke the case where such source addresses are wildcarded. Fix this by doing a two phase lookup, first with fully specified source address, next using saddr wildcarded. Reported-by: Nicolas Dichtel Signed-off-by: David S. Miller --- net/xfrm/xfrm_state.c | 90 +++++++++++++++++++++++++++++++++------------------ 1 file changed, 58 insertions(+), 32 deletions(-) (limited to 'net') diff --git a/net/xfrm/xfrm_state.c b/net/xfrm/xfrm_state.c index e25ff62ab2a6..62a5425cc6aa 100644 --- a/net/xfrm/xfrm_state.c +++ b/net/xfrm/xfrm_state.c @@ -748,12 +748,51 @@ static void xfrm_hash_grow_check(struct net *net, int have_hash_collision) schedule_work(&net->xfrm.state_hash_work); } +static void xfrm_state_look_at(struct xfrm_policy *pol, struct xfrm_state *x, + struct flowi *fl, unsigned short family, + xfrm_address_t *daddr, xfrm_address_t *saddr, + struct xfrm_state **best, int *acq_in_progress, + int *error) +{ + /* Resolution logic: + * 1. There is a valid state with matching selector. Done. + * 2. Valid state with inappropriate selector. Skip. + * + * Entering area of "sysdeps". + * + * 3. If state is not valid, selector is temporary, it selects + * only session which triggered previous resolution. Key + * manager will do something to install a state with proper + * selector. + */ + if (x->km.state == XFRM_STATE_VALID) { + if ((x->sel.family && + !xfrm_selector_match(&x->sel, fl, x->sel.family)) || + !security_xfrm_state_pol_flow_match(x, pol, fl)) + return; + + if (!*best || + (*best)->km.dying > x->km.dying || + ((*best)->km.dying == x->km.dying && + (*best)->curlft.add_time < x->curlft.add_time)) + *best = x; + } else if (x->km.state == XFRM_STATE_ACQ) { + *acq_in_progress = 1; + } else if (x->km.state == XFRM_STATE_ERROR || + x->km.state == XFRM_STATE_EXPIRED) { + if (xfrm_selector_match(&x->sel, fl, x->sel.family) && + security_xfrm_state_pol_flow_match(x, pol, fl)) + *error = -ESRCH; + } +} + struct xfrm_state * xfrm_state_find(xfrm_address_t *daddr, xfrm_address_t *saddr, struct flowi *fl, struct xfrm_tmpl *tmpl, struct xfrm_policy *pol, int *err, unsigned short family) { + static xfrm_address_t saddr_wildcard = { }; struct net *net = xp_net(pol); unsigned int h; struct hlist_node *entry; @@ -773,40 +812,27 @@ xfrm_state_find(xfrm_address_t *daddr, xfrm_address_t *saddr, xfrm_state_addr_check(x, daddr, saddr, family) && tmpl->mode == x->props.mode && tmpl->id.proto == x->id.proto && - (tmpl->id.spi == x->id.spi || !tmpl->id.spi)) { - /* Resolution logic: - 1. There is a valid state with matching selector. - Done. - 2. Valid state with inappropriate selector. Skip. - - Entering area of "sysdeps". - - 3. If state is not valid, selector is temporary, - it selects only session which triggered - previous resolution. Key manager will do - something to install a state with proper - selector. - */ - if (x->km.state == XFRM_STATE_VALID) { - if ((x->sel.family && !xfrm_selector_match(&x->sel, fl, x->sel.family)) || - !security_xfrm_state_pol_flow_match(x, pol, fl)) - continue; - if (!best || - best->km.dying > x->km.dying || - (best->km.dying == x->km.dying && - best->curlft.add_time < x->curlft.add_time)) - best = x; - } else if (x->km.state == XFRM_STATE_ACQ) { - acquire_in_progress = 1; - } else if (x->km.state == XFRM_STATE_ERROR || - x->km.state == XFRM_STATE_EXPIRED) { - if (xfrm_selector_match(&x->sel, fl, x->sel.family) && - security_xfrm_state_pol_flow_match(x, pol, fl)) - error = -ESRCH; - } - } + (tmpl->id.spi == x->id.spi || !tmpl->id.spi)) + xfrm_state_look_at(pol, x, fl, family, daddr, saddr, + &best, &acquire_in_progress, &error); + } + if (best) + goto found; + + h = xfrm_dst_hash(net, daddr, &saddr_wildcard, tmpl->reqid, family); + hlist_for_each_entry(x, entry, net->xfrm.state_bydst+h, bydst) { + if (x->props.family == family && + x->props.reqid == tmpl->reqid && + !(x->props.flags & XFRM_STATE_WILDRECV) && + xfrm_state_addr_check(x, daddr, saddr, family) && + tmpl->mode == x->props.mode && + tmpl->id.proto == x->id.proto && + (tmpl->id.spi == x->id.spi || !tmpl->id.spi)) + xfrm_state_look_at(pol, x, fl, family, daddr, saddr, + &best, &acquire_in_progress, &error); } +found: x = best; if (!x && !error && !acquire_in_progress) { if (tmpl->id.spi && -- cgit v1.2.3-59-g8ed1b