20 files changed, 65 insertions, 101 deletions

diff --git a/net/bridge/br_fdb.c b/net/bridge/br_fdb.c
index 91b017016d5..3fc69729381 100644
--- a/net/bridge/br_fdb.c
+++ b/net/bridge/br_fdb.c
@@ -121,6 +121,7 @@ void br_fdb_cleanup(unsigned long _data)
 {
         struct net_bridge *br = (struct net_bridge *)_data;
         unsigned long delay = hold_time(br);
+        unsigned long next_timer = jiffies + br->forward_delay;
         int i;
 
         spin_lock_bh(&br->hash_lock);
@@ -129,14 +130,21 @@ void br_fdb_cleanup(unsigned long _data)
                 struct hlist_node *h, *n;
 
                 hlist_for_each_entry_safe(f, h, n, &br->hash[i], hlist) {
-                        if (!f->is_static &&
-                            time_before_eq(f->ageing_timer + delay, jiffies))
+                        unsigned long this_timer;
+                        if (f->is_static)
+                                continue;
+                        this_timer = f->ageing_timer + delay;
+                        if (time_before_eq(this_timer, jiffies))
                                 fdb_delete(f);
+                        else if (this_timer < next_timer)
+                                next_timer = this_timer;
                 }
         }
         spin_unlock_bh(&br->hash_lock);
 
-        mod_timer(&br->gc_timer, jiffies + HZ/10);
+        /* Add HZ/4 to ensure we round the jiffies upwards to be after the next
+         * timer, otherwise we might round down and will have no-op run. */
+        mod_timer(&br->gc_timer, round_jiffies(next_timer + HZ/4));
 }
 
 /* Completely flush all dynamic entries in forwarding database.*/
diff --git a/net/bridge/br_stp.c b/net/bridge/br_stp.c
index 0e035d6162c..e38034aa56f 100644
--- a/net/bridge/br_stp.c
+++ b/net/bridge/br_stp.c
@@ -178,7 +178,8 @@ void br_transmit_config(struct net_bridge_port *p)
                 br_send_config_bpdu(p, &bpdu);
                 p->topology_change_ack = 0;
                 p->config_pending = 0;
-                mod_timer(&p->hold_timer, jiffies + BR_HOLD_TIME);
+                mod_timer(&p->hold_timer,
+                          round_jiffies(jiffies + BR_HOLD_TIME));
         }
 }
 
diff --git a/net/bridge/br_stp_timer.c b/net/bridge/br_stp_timer.c
index 24e0ca4a313..77f5255e691 100644
--- a/net/bridge/br_stp_timer.c
+++ b/net/bridge/br_stp_timer.c
@@ -42,7 +42,7 @@ static void br_hello_timer_expired(unsigned long arg)
         if (br->dev->flags & IFF_UP) {
                 br_config_bpdu_generation(br);
 
-                mod_timer(&br->hello_timer, jiffies + br->hello_time);
+                mod_timer(&br->hello_timer, round_jiffies(jiffies + br->hello_time));
         }
         spin_unlock(&br->lock);
 }
diff --git a/net/core/sysctl_net_core.c b/net/core/sysctl_net_core.c
index f34aca041a2..6d5ea976204 100644
--- a/net/core/sysctl_net_core.c
+++ b/net/core/sysctl_net_core.c
@@ -25,6 +25,7 @@ extern int sysctl_core_destroy_delay;
 extern u32 sysctl_xfrm_aevent_etime;
 extern u32 sysctl_xfrm_aevent_rseqth;
 extern int sysctl_xfrm_larval_drop;
+extern u32 sysctl_xfrm_acq_expires;
 #endif
 
 ctl_table core_table[] = {
@@ -127,6 +128,14 @@ ctl_table core_table[] = {
                 .mode           = 0644,
                 .proc_handler   = &proc_dointvec
         },
+        {
+                .ctl_name       = CTL_UNNUMBERED,
+                .procname       = "xfrm_acq_expires",
+                .data           = &sysctl_xfrm_acq_expires,
+                .maxlen         = sizeof(int),
+                .mode           = 0644,
+                .proc_handler   = &proc_dointvec
+        },
 #endif /* CONFIG_XFRM */
 #endif /* CONFIG_NET */
         {
diff --git a/net/core/utils.c b/net/core/utils.c
index adecfd281ae..2030bb8c2d3 100644
--- a/net/core/utils.c
+++ b/net/core/utils.c
@@ -139,16 +139,16 @@ int in4_pton(const char *src, int srclen,
         while(1) {
                 int c;
                 c = xdigit2bin(srclen > 0 ? *s : '\0', delim);
-                if (!(c & (IN6PTON_DIGIT | IN6PTON_DOT | IN6PTON_DELIM))) {
+                if (!(c & (IN6PTON_DIGIT | IN6PTON_DOT | IN6PTON_DELIM | IN6PTON_COLON_MASK))) {
                         goto out;
                 }
-                if (c & (IN6PTON_DOT | IN6PTON_DELIM)) {
+                if (c & (IN6PTON_DOT | IN6PTON_DELIM | IN6PTON_COLON_MASK)) {
                         if (w == 0)
                                 goto out;
                         *d++ = w & 0xff;
                         w = 0;
                         i++;
-                        if (c & IN6PTON_DELIM) {
+                        if (c & (IN6PTON_DELIM | IN6PTON_COLON_MASK)) {
                                 if (i != 4)
                                         goto out;
                                 break;
diff --git a/net/ieee80211/ieee80211_module.c b/net/ieee80211/ieee80211_module.c
index 7ec6610841b..17ad278696e 100644
--- a/net/ieee80211/ieee80211_module.c
+++ b/net/ieee80211/ieee80211_module.c
@@ -140,7 +140,7 @@ struct net_device *alloc_ieee80211(int sizeof_priv)
 
         dev = alloc_etherdev(sizeof(struct ieee80211_device) + sizeof_priv);
         if (!dev) {
-                IEEE80211_ERROR("Unable to network device.\n");
+                IEEE80211_ERROR("Unable to allocate network device.\n");
                 goto failed;
         }
         ieee = netdev_priv(dev);
diff --git a/net/ieee80211/softmac/ieee80211softmac_module.c b/net/ieee80211/softmac/ieee80211softmac_module.c
index e9cdc6615dd..c308756c2f9 100644
--- a/net/ieee80211/softmac/ieee80211softmac_module.c
+++ b/net/ieee80211/softmac/ieee80211softmac_module.c
@@ -33,7 +33,10 @@ struct net_device *alloc_ieee80211softmac(int sizeof_priv)
         struct ieee80211softmac_device *softmac;
         struct net_device *dev;
 
-        dev = alloc_ieee80211(sizeof(struct ieee80211softmac_device) + sizeof_priv);
+        dev = alloc_ieee80211(sizeof(*softmac) + sizeof_priv);
+        if (!dev)
+                return NULL;
+
         softmac = ieee80211_priv(dev);
         softmac->dev = dev;
         softmac->ieee = netdev_priv(dev);
diff --git a/net/ipv4/fib_frontend.c b/net/ipv4/fib_frontend.c
index 837f2957fa8..9ad1f6252a9 100644
--- a/net/ipv4/fib_frontend.c
+++ b/net/ipv4/fib_frontend.c
@@ -250,8 +250,6 @@ e_inval:
         return -EINVAL;
 }
 
-#ifndef CONFIG_IP_NOSIOCRT
-
 static inline __be32 sk_extract_addr(struct sockaddr *addr)
 {
         return ((struct sockaddr_in *) addr)->sin_addr.s_addr;
@@ -443,15 +441,6 @@ int ip_rt_ioctl(unsigned int cmd, void __user *arg)
         return -EINVAL;
 }
 
-#else
-
-int ip_rt_ioctl(unsigned int cmd, void *arg)
-{
-        return -EINVAL;
-}
-
-#endif
-
 struct nla_policy rtm_ipv4_policy[RTA_MAX+1] __read_mostly = {
         [RTA_DST]               = { .type = NLA_U32 },
         [RTA_SRC]               = { .type = NLA_U32 },
diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c
index bd4c295f5d7..766314505c0 100644
--- a/net/ipv4/tcp.c
+++ b/net/ipv4/tcp.c
@@ -1674,9 +1674,8 @@ adjudge_to_death:
         }
         if (sk->sk_state != TCP_CLOSE) {
                 sk_stream_mem_reclaim(sk);
-                if (atomic_read(sk->sk_prot->orphan_count) > sysctl_tcp_max_orphans ||
-                    (sk->sk_wmem_queued > SOCK_MIN_SNDBUF &&
-                     atomic_read(&tcp_memory_allocated) > sysctl_tcp_mem[2])) {
+                if (tcp_too_many_orphans(sk,
+                                atomic_read(sk->sk_prot->orphan_count))) {
                         if (net_ratelimit())
                                 printk(KERN_INFO "TCP: too many of orphaned "
                                        "sockets\n");
diff --git a/net/ipv4/tcp_probe.c b/net/ipv4/tcp_probe.c
index 3938d5dbdf2..760165a0800 100644
--- a/net/ipv4/tcp_probe.c
+++ b/net/ipv4/tcp_probe.c
@@ -80,7 +80,8 @@ static void printl(const char *fmt, ...)
 
         kfifo_put(tcpw.fifo, tbuf, len);
         wake_up(&tcpw.wait);
-}
+} __attribute__ ((format (printf, 1, 2)));
+
 
 /*
  * Hook inserted to be called before each receive packet.
@@ -95,7 +96,7 @@ static int jtcp_rcv_established(struct sock *sk, struct sk_buff *skb,
         /* Only update if port matches */
         if ((port == 0 || ntohs(inet->dport) == port || ntohs(inet->sport) == port)
             && (full || tp->snd_cwnd != tcpw.lastcwnd)) {
-                printl("%d.%d.%d.%d:%u %d.%d.%d.%d:%u %d %#x %#x %u %u %u\n",
+                printl("%d.%d.%d.%d:%u %d.%d.%d.%d:%u %d %#x %#x %u %u %u %u\n",
                        NIPQUAD(inet->saddr), ntohs(inet->sport),
                        NIPQUAD(inet->daddr), ntohs(inet->dport),
                        skb->len, tp->snd_nxt, tp->snd_una,
diff --git a/net/ipv4/tcp_timer.c b/net/ipv4/tcp_timer.c
index 2ca97b20929..e61340150ba 100644
--- a/net/ipv4/tcp_timer.c
+++ b/net/ipv4/tcp_timer.c
@@ -78,9 +78,7 @@ static int tcp_out_of_resources(struct sock *sk, int do_reset)
         if (sk->sk_err_soft)
                 orphans <<= 1;
 
-        if (orphans >= sysctl_tcp_max_orphans ||
-            (sk->sk_wmem_queued > SOCK_MIN_SNDBUF &&
-             atomic_read(&tcp_memory_allocated) > sysctl_tcp_mem[2])) {
+        if (tcp_too_many_orphans(sk, orphans)) {
                 if (net_ratelimit())
                         printk(KERN_INFO "Out of socket memory\n");
 
diff --git a/net/ipv4/xfrm4_input.c b/net/ipv4/xfrm4_input.c
index 5ceca951d73..fa1902dc81b 100644
--- a/net/ipv4/xfrm4_input.c
+++ b/net/ipv4/xfrm4_input.c
@@ -139,10 +139,8 @@ int xfrm4_rcv_encap(struct sk_buff *skb, __u16 encap_type)
         nf_reset(skb);
 
         if (decaps) {
-                if (!(skb->dev->flags&IFF_LOOPBACK)) {
-                        dst_release(skb->dst);
-                        skb->dst = NULL;
-                }
+                dst_release(skb->dst);
+                skb->dst = NULL;
                 netif_rx(skb);
                 return 0;
         } else {
diff --git a/net/ipv4/xfrm4_mode_tunnel.c b/net/ipv4/xfrm4_mode_tunnel.c
index a2f2e6a5ec5..9963700e74c 100644
--- a/net/ipv4/xfrm4_mode_tunnel.c
+++ b/net/ipv4/xfrm4_mode_tunnel.c
@@ -85,6 +85,8 @@ static int xfrm4_tunnel_output(struct xfrm_state *x, struct sk_buff *skb)
         top_iph->saddr = x->props.saddr.a4;
         top_iph->daddr = x->id.daddr.a4;
 
+        skb->protocol = htons(ETH_P_IP);
+
         memset(&(IPCB(skb)->opt), 0, sizeof(struct ip_options));
         return 0;
 }
diff --git a/net/ipv6/ah6.c b/net/ipv6/ah6.c
index b696c840120..128f94c79c6 100644
--- a/net/ipv6/ah6.c
+++ b/net/ipv6/ah6.c
@@ -247,7 +247,7 @@ static int ah6_output(struct xfrm_state *x, struct sk_buff *skb)
         memcpy(tmp_base, top_iph, sizeof(tmp_base));
 
         tmp_ext = NULL;
-        extlen = skb_transport_offset(skb) + sizeof(struct ipv6hdr);
+        extlen = skb_transport_offset(skb) - sizeof(struct ipv6hdr);
         if (extlen) {
                 extlen += sizeof(*tmp_ext);
                 tmp_ext = kmalloc(extlen, GFP_ATOMIC);
diff --git a/net/ipv6/ip6_fib.c b/net/ipv6/ip6_fib.c
index ca08ee88d07..662a7d9681f 100644
--- a/net/ipv6/ip6_fib.c
+++ b/net/ipv6/ip6_fib.c
@@ -619,14 +619,6 @@ static int fib6_add_rt2node(struct fib6_node *fn, struct rt6_info *rt,
 
         ins = &fn->leaf;
 
-        if (fn->fn_flags&RTN_TL_ROOT &&
-            fn->leaf == &ip6_null_entry &&
-            !(rt->rt6i_flags & (RTF_DEFAULT | RTF_ADDRCONF)) ){
-                fn->leaf = rt;
-                rt->u.dst.rt6_next = NULL;
-                goto out;
-        }
-
         for (iter = fn->leaf; iter; iter=iter->u.dst.rt6_next) {
                 /*
                  *      Search for duplicates
@@ -666,7 +658,6 @@ static int fib6_add_rt2node(struct fib6_node *fn, struct rt6_info *rt,
          *      insert node
          */
 
-out:
         rt->u.dst.rt6_next = iter;
         *ins = rt;
         rt->rt6i_node = fn;
diff --git a/net/ipv6/xfrm6_input.c b/net/ipv6/xfrm6_input.c
index d7ed8aa56ec..c858537cec4 100644
--- a/net/ipv6/xfrm6_input.c
+++ b/net/ipv6/xfrm6_input.c
@@ -104,10 +104,8 @@ int xfrm6_rcv_spi(struct sk_buff *skb, __be32 spi)
         nf_reset(skb);
 
         if (decaps) {
-                if (!(skb->dev->flags&IFF_LOOPBACK)) {
-                        dst_release(skb->dst);
-                        skb->dst = NULL;
-                }
+                dst_release(skb->dst);
+                skb->dst = NULL;
                 netif_rx(skb);
                 return -1;
         } else {
diff --git a/net/ipv6/xfrm6_mode_tunnel.c b/net/ipv6/xfrm6_mode_tunnel.c
index a6c0cdf46ad..9fc95bc6509 100644
--- a/net/ipv6/xfrm6_mode_tunnel.c
+++ b/net/ipv6/xfrm6_mode_tunnel.c
@@ -80,6 +80,7 @@ static int xfrm6_tunnel_output(struct xfrm_state *x, struct sk_buff *skb)
         top_iph->hop_limit = dst_metric(dst->child, RTAX_HOPLIMIT);
         ipv6_addr_copy(&top_iph->saddr, (struct in6_addr *)&x->props.saddr);
         ipv6_addr_copy(&top_iph->daddr, (struct in6_addr *)&x->id.daddr);
+        skb->protocol = htons(ETH_P_IPV6);
         return 0;
 }
 
diff --git a/net/packet/af_packet.c b/net/packet/af_packet.c
index 02e401cd683..f8b83014ccc 100644
--- a/net/packet/af_packet.c
+++ b/net/packet/af_packet.c
@@ -83,22 +83,6 @@
 #include <net/inet_common.h>
 #endif
 
-#define CONFIG_SOCK_PACKET      1
-
-/*
-   Proposed replacement for SIOC{ADD,DEL}MULTI and
-   IFF_PROMISC, IFF_ALLMULTI flags.
-
-   It is more expensive, but I believe,
-   it is really correct solution: reentereble, safe and fault tolerant.
-
-   IFF_PROMISC/IFF_ALLMULTI/SIOC{ADD/DEL}MULTI are faked by keeping
-   reference count and global flag, so that real status is
-   (gflag|(count != 0)), so that we can use obsolete faulty interface
-   not harming clever users.
- */
-#define CONFIG_PACKET_MULTICAST 1
-
 /*
    Assumptions:
    - if device has no dev->hard_header routine, it adds and removes ll header
@@ -159,7 +143,6 @@ static atomic_t packet_socks_nr;
 
 /* Private packet socket structures. */
 
-#ifdef CONFIG_PACKET_MULTICAST
 struct packet_mclist
 {
         struct packet_mclist    *next;
@@ -179,7 +162,7 @@ struct packet_mreq_max
         unsigned short  mr_alen;
         unsigned char   mr_address[MAX_ADDR_LEN];
 };
-#endif
+
 #ifdef CONFIG_PACKET_MMAP
 static int packet_set_ring(struct sock *sk, struct tpacket_req *req, int closing);
 #endif
@@ -205,9 +188,7 @@ struct packet_sock {
                                 origdev:1;
         int                     ifindex;        /* bound device         */
         __be16                  num;
-#ifdef CONFIG_PACKET_MULTICAST
         struct packet_mclist    *mclist;
-#endif
 #ifdef CONFIG_PACKET_MMAP
         atomic_t                mapped;
         unsigned int            pg_vec_order;
@@ -263,7 +244,6 @@ static void packet_sock_destruct(struct sock *sk)
 
 static const struct proto_ops packet_ops;
 
-#ifdef CONFIG_SOCK_PACKET
 static const struct proto_ops packet_ops_spkt;
 
 static int packet_rcv_spkt(struct sk_buff *skb, struct net_device *dev,  struct packet_type *pt, struct net_device *orig_dev)
@@ -435,7 +415,6 @@ out_unlock:
                 dev_put(dev);
         return err;
 }
-#endif
 
 static inline unsigned int run_filter(struct sk_buff *skb, struct sock *sk,
                                       unsigned int res)
@@ -851,9 +830,7 @@ static int packet_release(struct socket *sock)
                 __sock_put(sk);
         }
 
-#ifdef CONFIG_PACKET_MULTICAST
         packet_flush_mclist(sk);
-#endif
 
 #ifdef CONFIG_PACKET_MMAP
         if (po->pg_vec) {
@@ -936,8 +913,6 @@ out_unlock:
  *      Bind a packet socket to a device
  */
 
-#ifdef CONFIG_SOCK_PACKET
-
 static int packet_bind_spkt(struct socket *sock, struct sockaddr *uaddr, int addr_len)
 {
         struct sock *sk=sock->sk;
@@ -960,7 +935,6 @@ static int packet_bind_spkt(struct socket *sock, struct sockaddr *uaddr, int add
         }
         return err;
 }
-#endif
 
 static int packet_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len)
 {
@@ -1012,11 +986,8 @@ static int packet_create(struct socket *sock, int protocol)
 
         if (!capable(CAP_NET_RAW))
                 return -EPERM;
-        if (sock->type != SOCK_DGRAM && sock->type != SOCK_RAW
-#ifdef CONFIG_SOCK_PACKET
-            && sock->type != SOCK_PACKET
-#endif
-            )
+        if (sock->type != SOCK_DGRAM && sock->type != SOCK_RAW &&
+            sock->type != SOCK_PACKET)
                 return -ESOCKTNOSUPPORT;
 
         sock->state = SS_UNCONNECTED;
@@ -1027,10 +998,9 @@ static int packet_create(struct socket *sock, int protocol)
                 goto out;
 
         sock->ops = &packet_ops;
-#ifdef CONFIG_SOCK_PACKET
         if (sock->type == SOCK_PACKET)
                 sock->ops = &packet_ops_spkt;
-#endif
+
         sock_init_data(sock, sk);
 
         po = pkt_sk(sk);
@@ -1046,10 +1016,10 @@ static int packet_create(struct socket *sock, int protocol)
 
         spin_lock_init(&po->bind_lock);
         po->prot_hook.func = packet_rcv;
-#ifdef CONFIG_SOCK_PACKET
+
         if (sock->type == SOCK_PACKET)
                 po->prot_hook.func = packet_rcv_spkt;
-#endif
+
         po->prot_hook.af_packet_priv = sk;
 
         if (proto) {
@@ -1169,7 +1139,6 @@ out:
         return err;
 }
 
-#ifdef CONFIG_SOCK_PACKET
 static int packet_getname_spkt(struct socket *sock, struct sockaddr *uaddr,
                                int *uaddr_len, int peer)
 {
@@ -1190,7 +1159,6 @@ static int packet_getname_spkt(struct socket *sock, struct sockaddr *uaddr,
 
         return 0;
 }
-#endif
 
 static int packet_getname(struct socket *sock, struct sockaddr *uaddr,
                           int *uaddr_len, int peer)
@@ -1221,7 +1189,6 @@ static int packet_getname(struct socket *sock, struct sockaddr *uaddr,
         return 0;
 }
 
-#ifdef CONFIG_PACKET_MULTICAST
 static void packet_dev_mc(struct net_device *dev, struct packet_mclist *i, int what)
 {
         switch (i->type) {
@@ -1349,7 +1316,6 @@ static void packet_flush_mclist(struct sock *sk)
         }
         rtnl_unlock();
 }
-#endif
 
 static int
 packet_setsockopt(struct socket *sock, int level, int optname, char __user *optval, int optlen)
@@ -1362,7 +1328,6 @@ packet_setsockopt(struct socket *sock, int level, int optname, char __user *optv
                 return -ENOPROTOOPT;
 
         switch(optname) {
-#ifdef CONFIG_PACKET_MULTICAST
         case PACKET_ADD_MEMBERSHIP:
         case PACKET_DROP_MEMBERSHIP:
         {
@@ -1383,7 +1348,7 @@ packet_setsockopt(struct socket *sock, int level, int optname, char __user *optv
                         ret = packet_mc_drop(sk, &mreq);
                 return ret;
         }
-#endif
+
 #ifdef CONFIG_PACKET_MMAP
         case PACKET_RX_RING:
         {
@@ -1506,11 +1471,10 @@ static int packet_notifier(struct notifier_block *this, unsigned long msg, void
 
                 switch (msg) {
                 case NETDEV_UNREGISTER:
-#ifdef CONFIG_PACKET_MULTICAST
                         if (po->mclist)
                                 packet_dev_mclist(dev, po->mclist, -1);
-                        // fallthrough
-#endif
+                        /* fallthrough */
+
                 case NETDEV_DOWN:
                         if (dev->ifindex == po->ifindex) {
                                 spin_lock(&po->bind_lock);
@@ -1856,7 +1820,6 @@ out:
 #endif
 
 
-#ifdef CONFIG_SOCK_PACKET
 static const struct proto_ops packet_ops_spkt = {
         .family =       PF_PACKET,
         .owner =        THIS_MODULE,
@@ -1877,7 +1840,6 @@ static const struct proto_ops packet_ops_spkt = {
         .mmap =         sock_no_mmap,
         .sendpage =     sock_no_sendpage,
 };
-#endif
 
 static const struct proto_ops packet_ops = {
         .family =       PF_PACKET,
diff --git a/net/xfrm/xfrm_policy.c b/net/xfrm/xfrm_policy.c
index b8bab89616a..64a375178c5 100644
--- a/net/xfrm/xfrm_policy.c
+++ b/net/xfrm/xfrm_policy.c
@@ -26,10 +26,11 @@
 #include <net/xfrm.h>
 #include <net/ip.h>
 #include <linux/audit.h>
+#include <linux/cache.h>
 
 #include "xfrm_hash.h"
 
-int sysctl_xfrm_larval_drop;
+int sysctl_xfrm_larval_drop __read_mostly;
 
 DEFINE_MUTEX(xfrm_cfg_mutex);
 EXPORT_SYMBOL(xfrm_cfg_mutex);
diff --git a/net/xfrm/xfrm_state.c b/net/xfrm/xfrm_state.c
index 9955ff4da0a..372f06eb8bb 100644
--- a/net/xfrm/xfrm_state.c
+++ b/net/xfrm/xfrm_state.c
@@ -21,18 +21,21 @@
 #include <linux/cache.h>
 #include <asm/uaccess.h>
 #include <linux/audit.h>
+#include <linux/cache.h>
 
 #include "xfrm_hash.h"
 
 struct sock *xfrm_nl;
 EXPORT_SYMBOL(xfrm_nl);
 
-u32 sysctl_xfrm_aevent_etime = XFRM_AE_ETIME;
+u32 sysctl_xfrm_aevent_etime __read_mostly = XFRM_AE_ETIME;
 EXPORT_SYMBOL(sysctl_xfrm_aevent_etime);
 
-u32 sysctl_xfrm_aevent_rseqth = XFRM_AE_SEQT_SIZE;
+u32 sysctl_xfrm_aevent_rseqth __read_mostly = XFRM_AE_SEQT_SIZE;
 EXPORT_SYMBOL(sysctl_xfrm_aevent_rseqth);
 
+u32 sysctl_xfrm_acq_expires __read_mostly = 30;
+
 /* Each xfrm_state may be linked to two tables:
 
    1. Hash table by (spi,daddr,ah/esp) to find SA by SPI. (input,ctl)
@@ -622,8 +625,8 @@ xfrm_state_find(xfrm_address_t *daddr, xfrm_address_t *saddr,
                                 h = xfrm_spi_hash(&x->id.daddr, x->id.spi, x->id.proto, family);
                                 hlist_add_head(&x->byspi, xfrm_state_byspi+h);
                         }
-                        x->lft.hard_add_expires_seconds = XFRM_ACQ_EXPIRES;
-                        x->timer.expires = jiffies + XFRM_ACQ_EXPIRES*HZ;
+                        x->lft.hard_add_expires_seconds = sysctl_xfrm_acq_expires;
+                        x->timer.expires = jiffies + sysctl_xfrm_acq_expires*HZ;
                         add_timer(&x->timer);
                         xfrm_state_num++;
                         xfrm_hash_grow_check(x->bydst.next != NULL);
@@ -772,9 +775,9 @@ static struct xfrm_state *__find_acq_core(unsigned short family, u8 mode, u32 re
                 x->props.family = family;
                 x->props.mode = mode;
                 x->props.reqid = reqid;
-                x->lft.hard_add_expires_seconds = XFRM_ACQ_EXPIRES;
+                x->lft.hard_add_expires_seconds = sysctl_xfrm_acq_expires;
                 xfrm_state_hold(x);
-                x->timer.expires = jiffies + XFRM_ACQ_EXPIRES*HZ;
+                x->timer.expires = jiffies + sysctl_xfrm_acq_expires*HZ;
                 add_timer(&x->timer);
                 hlist_add_head(&x->bydst, xfrm_state_bydst+h);
                 h = xfrm_src_hash(daddr, saddr, family);