mac80211: fix modprobe deadlock by not calling wep_init under rtnl_lock

[safe/jmp/linux-2.6] / net / ipv4 / xfrm4_policy.c

diff --git a/net/ipv4/xfrm4_policy.c b/net/ipv4/xfrm4_policy.c
index 10b72d1..60d918c 100644 (file)
--- a/net/ipv4/xfrm4_policy.c
+++ b/net/ipv4/xfrm4_policy.c
@@ -18,7 +18,8 @@
 static struct dst_ops xfrm4_dst_ops;
 static struct xfrm_policy_afinfo xfrm4_policy_afinfo;
 
-static struct dst_entry *xfrm4_dst_lookup(int tos, xfrm_address_t *saddr,
+static struct dst_entry *xfrm4_dst_lookup(struct net *net, int tos,
+                                         xfrm_address_t *saddr,
                                          xfrm_address_t *daddr)
 {
        struct flowi fl = {
@@ -36,19 +37,20 @@ static struct dst_entry *xfrm4_dst_lookup(int tos, xfrm_address_t *saddr,
        if (saddr)
                fl.fl4_src = saddr->a4;
 
-       err = __ip_route_output_key(&rt, &fl);
+       err = __ip_route_output_key(net, &rt, &fl);
        dst = &rt->u.dst;
        if (err)
                dst = ERR_PTR(err);
        return dst;
 }
 
-static int xfrm4_get_saddr(xfrm_address_t *saddr, xfrm_address_t *daddr)
+static int xfrm4_get_saddr(struct net *net,
+                          xfrm_address_t *saddr, xfrm_address_t *daddr)
 {
        struct dst_entry *dst;
        struct rtable *rt;
 
-       dst = xfrm4_dst_lookup(0, NULL, daddr);
+       dst = xfrm4_dst_lookup(net, 0, NULL, daddr);
        if (IS_ERR(dst))
                return -EHOSTUNREACH;
 
@@ -65,7 +67,7 @@ __xfrm4_find_bundle(struct flowi *fl, struct xfrm_policy *policy)
 
        read_lock_bh(&policy->lock);
        for (dst = policy->bundles; dst; dst = dst->next) {
-               struct xfrm_dst *xdst = (struct xfrm_dst*)dst;
+               struct xfrm_dst *xdst = (struct xfrm_dst *)dst;
                if (xdst->u.rt.fl.oif == fl->oif &&     /*XXX*/
                    xdst->u.rt.fl.fl4_dst == fl->fl4_dst &&
                    xdst->u.rt.fl.fl4_src == fl->fl4_src &&
@@ -84,6 +86,12 @@ static int xfrm4_get_tos(struct flowi *fl)
        return fl->fl4_tos;
 }
 
+static int xfrm4_init_path(struct xfrm_dst *path, struct dst_entry *dst,
+                          int nfheader_len)
+{
+       return 0;
+}
+
 static int xfrm4_fill_dst(struct xfrm_dst *xdst, struct net_device *dev)
 {
        struct rtable *rt = (struct rtable *)xdst->route;
@@ -115,7 +123,7 @@ static int xfrm4_fill_dst(struct xfrm_dst *xdst, struct net_device *dev)
 }
 
 static void
-_decode_session4(struct sk_buff *skb, struct flowi *fl)
+_decode_session4(struct sk_buff *skb, struct flowi *fl, int reverse)
 {
        struct iphdr *iph = ip_hdr(skb);
        u8 *xprth = skb_network_header(skb) + iph->ihl * 4;
@@ -131,8 +139,8 @@ _decode_session4(struct sk_buff *skb, struct flowi *fl)
                        if (pskb_may_pull(skb, xprth + 4 - skb->data)) {
                                __be16 *ports = (__be16 *)xprth;
 
-                               fl->fl_ip_sport = ports[0];
-                               fl->fl_ip_dport = ports[1];
+                               fl->fl_ip_sport = ports[!!reverse];
+                               fl->fl_ip_dport = ports[!reverse];
                        }
                        break;
 
@@ -174,14 +182,14 @@ _decode_session4(struct sk_buff *skb, struct flowi *fl)
                }
        }
        fl->proto = iph->protocol;
-       fl->fl4_dst = iph->daddr;
-       fl->fl4_src = iph->saddr;
+       fl->fl4_dst = reverse ? iph->saddr : iph->daddr;
+       fl->fl4_src = reverse ? iph->daddr : iph->saddr;
        fl->fl4_tos = iph->tos;
 }
 
-static inline int xfrm4_garbage_collect(void)
+static inline int xfrm4_garbage_collect(struct dst_ops *ops)
 {
-       xfrm4_policy_afinfo.garbage_collect();
+       xfrm4_policy_afinfo.garbage_collect(&init_net);
        return (atomic_read(&xfrm4_dst_ops.entries) > xfrm4_dst_ops.gc_thresh*2);
 }
 
@@ -215,7 +223,7 @@ static void xfrm4_dst_ifdown(struct dst_entry *dst, struct net_device *dev,
        xdst = (struct xfrm_dst *)dst;
        if (xdst->u.rt.idev->dev == dev) {
                struct in_device *loopback_idev =
-                       in_dev_get(dev->nd_net->loopback_dev);
+                       in_dev_get(dev_net(dev)->loopback_dev);
                BUG_ON(!loopback_idev);
 
                do {
@@ -233,14 +241,14 @@ static void xfrm4_dst_ifdown(struct dst_entry *dst, struct net_device *dev,
 
 static struct dst_ops xfrm4_dst_ops = {
        .family =               AF_INET,
-       .protocol =             __constant_htons(ETH_P_IP),
+       .protocol =             cpu_to_be16(ETH_P_IP),
        .gc =                   xfrm4_garbage_collect,
        .update_pmtu =          xfrm4_update_pmtu,
        .destroy =              xfrm4_dst_destroy,
        .ifdown =               xfrm4_dst_ifdown,
        .local_out =            __ip_local_out,
        .gc_thresh =            1024,
-       .entry_size =           sizeof(struct xfrm_dst),
+       .entries =              ATOMIC_INIT(0),
 };
 
 static struct xfrm_policy_afinfo xfrm4_policy_afinfo = {
@@ -251,6 +259,7 @@ static struct xfrm_policy_afinfo xfrm4_policy_afinfo = {
        .find_bundle =          __xfrm4_find_bundle,
        .decode_session =       _decode_session4,
        .get_tos =              xfrm4_get_tos,
+       .init_path =            xfrm4_init_path,
        .fill_dst =             xfrm4_fill_dst,
 };