Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6

2 files changed, 18 insertions, 15 deletions

diff --git a/net/ipv4/tcp_probe.c b/net/ipv4/tcp_probe.c
index bb110c5..9bc805d 100644
--- a/net/ipv4/tcp_probe.c
+++ b/net/ipv4/tcp_probe.c
@@ -39,9 +39,9 @@ static int port __read_mostly = 0;
 MODULE_PARM_DESC(port, "Port to match (0=all)");
 module_param(port, int, 0);
 
-static int bufsize __read_mostly = 4096;
+static unsigned int bufsize __read_mostly = 4096;
 MODULE_PARM_DESC(bufsize, "Log buffer size in packets (4096)");
-module_param(bufsize, int, 0);
+module_param(bufsize, uint, 0);
 
 static int full __read_mostly;
 MODULE_PARM_DESC(full, "Full log (1=every ack packet received,  0=only cwnd changes)");
@@ -75,12 +75,12 @@ static struct {
 
 static inline int tcp_probe_used(void)
 {
-	return (tcp_probe.head - tcp_probe.tail) % bufsize;
+	return (tcp_probe.head - tcp_probe.tail) & (bufsize - 1);
 }
 
 static inline int tcp_probe_avail(void)
 {
-	return bufsize - tcp_probe_used();
+	return bufsize - tcp_probe_used() - 1;
 }
 
 /*
@@ -116,7 +116,7 @@ static int jtcp_rcv_established(struct sock *sk, struct sk_buff *skb,
 			p->ssthresh = tcp_current_ssthresh(sk);
 			p->srtt = tp->srtt >> 3;
 
-			tcp_probe.head = (tcp_probe.head + 1) % bufsize;
+			tcp_probe.head = (tcp_probe.head + 1) & (bufsize - 1);
 		}
 		tcp_probe.lastcwnd = tp->snd_cwnd;
 		spin_unlock(&tcp_probe.lock);
@@ -149,7 +149,7 @@ static int tcpprobe_open(struct inode * inode, struct file * file)
 static int tcpprobe_sprint(char *tbuf, int n)
 {
 	const struct tcp_log *p
-		= tcp_probe.log + tcp_probe.tail % bufsize;
+		= tcp_probe.log + tcp_probe.tail;
 	struct timespec tv
 		= ktime_to_timespec(ktime_sub(p->tstamp, tcp_probe.start));
 
@@ -192,7 +192,7 @@ static ssize_t tcpprobe_read(struct file *file, char __user *buf,
 		width = tcpprobe_sprint(tbuf, sizeof(tbuf));
 
 		if (cnt + width < len)
-			tcp_probe.tail = (tcp_probe.tail + 1) % bufsize;
+			tcp_probe.tail = (tcp_probe.tail + 1) & (bufsize - 1);
 
 		spin_unlock_bh(&tcp_probe.lock);
 
@@ -222,9 +222,10 @@ static __init int tcpprobe_init(void)
 	init_waitqueue_head(&tcp_probe.wait);
 	spin_lock_init(&tcp_probe.lock);
 
-	if (bufsize < 0)
+	if (bufsize == 0)
 		return -EINVAL;
 
+	bufsize = roundup_pow_of_two(bufsize);
 	tcp_probe.log = kcalloc(bufsize, sizeof(struct tcp_log), GFP_KERNEL);
 	if (!tcp_probe.log)
 		goto err0;
@@ -236,7 +237,7 @@ static __init int tcpprobe_init(void)
 	if (ret)
 		goto err1;
 
-	pr_info("TCP probe registered (port=%d)\n", port);
+	pr_info("TCP probe registered (port=%d) bufsize=%u\n", port, bufsize);
 	return 0;
  err1:
 	proc_net_remove(&init_net, procname);
diff --git a/net/ipv4/xfrm4_policy.c b/net/ipv4/xfrm4_policy.c
index 8c08a28..67107d6 100644
--- a/net/ipv4/xfrm4_policy.c
+++ b/net/ipv4/xfrm4_policy.c
@@ -15,7 +15,6 @@
 #include <net/xfrm.h>
 #include <net/ip.h>
 
-static struct dst_ops xfrm4_dst_ops;
 static struct xfrm_policy_afinfo xfrm4_policy_afinfo;
 
 static struct dst_entry *xfrm4_dst_lookup(struct net *net, int tos,
@@ -190,8 +189,10 @@ _decode_session4(struct sk_buff *skb, struct flowi *fl, int reverse)
 
 static inline int xfrm4_garbage_collect(struct dst_ops *ops)
 {
-	xfrm4_policy_afinfo.garbage_collect(&init_net);
-	return (atomic_read(&xfrm4_dst_ops.entries) > xfrm4_dst_ops.gc_thresh*2);
+	struct net *net = container_of(ops, struct net, xfrm.xfrm4_dst_ops);
+
+	xfrm4_policy_afinfo.garbage_collect(net);
+	return (atomic_read(&ops->entries) > ops->gc_thresh * 2);
 }
 
 static void xfrm4_update_pmtu(struct dst_entry *dst, u32 mtu)
@@ -268,7 +269,7 @@ static struct xfrm_policy_afinfo xfrm4_policy_afinfo = {
 static struct ctl_table xfrm4_policy_table[] = {
 	{
 		.procname       = "xfrm4_gc_thresh",
-		.data           = &xfrm4_dst_ops.gc_thresh,
+		.data           = &init_net.xfrm.xfrm4_dst_ops.gc_thresh,
 		.maxlen         = sizeof(int),
 		.mode           = 0644,
 		.proc_handler   = proc_dointvec,
@@ -295,8 +296,6 @@ static void __exit xfrm4_policy_fini(void)
 
 void __init xfrm4_init(int rt_max_size)
 {
-	xfrm4_state_init();
-	xfrm4_policy_init();
 	/*
 	 * Select a default value for the gc_thresh based on the main route
 	 * table hash size.  It seems to me the worst case scenario is when
@@ -308,6 +307,9 @@ void __init xfrm4_init(int rt_max_size)
 	 * and start cleaning when were 1/2 full
 	 */
 	xfrm4_dst_ops.gc_thresh = rt_max_size/2;
+
+	xfrm4_state_init();
+	xfrm4_policy_init();
 #ifdef CONFIG_SYSCTL
 	sysctl_hdr = register_net_sysctl_table(&init_net, net_ipv4_ctl_path,
 						xfrm4_policy_table);