Merge branch 'tracing/urgent' into tracing/core

Merge reason: Pick up latest fixes and update to latest upstream.

Signed-off-by: Ingo Molnar <mingo@elte.hu>

21 files changed, 80 insertions, 73 deletions

diff --git a/net/ipv4/af_inet.c b/net/ipv4/af_inet.c
index 6c30a73f03f..58c4b0f7c4a 100644
--- a/net/ipv4/af_inet.c
+++ b/net/ipv4/af_inet.c
@@ -244,7 +244,7 @@ EXPORT_SYMBOL(build_ehash_secret);
 static inline int inet_netns_ok(struct net *net, int protocol)
 {
 	int hash;
-	struct net_protocol *ipprot;
+	const struct net_protocol *ipprot;
 
 	if (net_eq(net, &init_net))
 		return 1;
@@ -1162,7 +1162,7 @@ EXPORT_SYMBOL(inet_sk_rebuild_header);
 static int inet_gso_send_check(struct sk_buff *skb)
 {
 	struct iphdr *iph;
-	struct net_protocol *ops;
+	const struct net_protocol *ops;
 	int proto;
 	int ihl;
 	int err = -EINVAL;
@@ -1198,7 +1198,7 @@ static struct sk_buff *inet_gso_segment(struct sk_buff *skb, int features)
 {
 	struct sk_buff *segs = ERR_PTR(-EINVAL);
 	struct iphdr *iph;
-	struct net_protocol *ops;
+	const struct net_protocol *ops;
 	int proto;
 	int ihl;
 	int id;
@@ -1265,7 +1265,7 @@ out:
 static struct sk_buff **inet_gro_receive(struct sk_buff **head,
 					 struct sk_buff *skb)
 {
-	struct net_protocol *ops;
+	const struct net_protocol *ops;
 	struct sk_buff **pp = NULL;
 	struct sk_buff *p;
 	struct iphdr *iph;
@@ -1342,7 +1342,7 @@ out:
 
 static int inet_gro_complete(struct sk_buff *skb)
 {
-	struct net_protocol *ops;
+	const struct net_protocol *ops;
 	struct iphdr *iph = ip_hdr(skb);
 	int proto = iph->protocol & (MAX_INET_PROTOS - 1);
 	int err = -ENOSYS;
@@ -1427,13 +1427,13 @@ void snmp_mib_free(void *ptr[2])
 EXPORT_SYMBOL_GPL(snmp_mib_free);
 
 #ifdef CONFIG_IP_MULTICAST
-static struct net_protocol igmp_protocol = {
+static const struct net_protocol igmp_protocol = {
 	.handler =	igmp_rcv,
 	.netns_ok =	1,
 };
 #endif
 
-static struct net_protocol tcp_protocol = {
+static const struct net_protocol tcp_protocol = {
 	.handler =	tcp_v4_rcv,
 	.err_handler =	tcp_v4_err,
 	.gso_send_check = tcp_v4_gso_send_check,
@@ -1444,7 +1444,7 @@ static struct net_protocol tcp_protocol = {
 	.netns_ok =	1,
 };
 
-static struct net_protocol udp_protocol = {
+static const struct net_protocol udp_protocol = {
 	.handler =	udp_rcv,
 	.err_handler =	udp_err,
 	.gso_send_check = udp4_ufo_send_check,
@@ -1453,7 +1453,7 @@ static struct net_protocol udp_protocol = {
 	.netns_ok =	1,
 };
 
-static struct net_protocol icmp_protocol = {
+static const struct net_protocol icmp_protocol = {
 	.handler =	icmp_rcv,
 	.no_policy =	1,
 	.netns_ok =	1,
diff --git a/net/ipv4/ah4.c b/net/ipv4/ah4.c
index e878e494296..5c662703eb1 100644
--- a/net/ipv4/ah4.c
+++ b/net/ipv4/ah4.c
@@ -311,7 +311,7 @@ static const struct xfrm_type ah_type =
 	.output		= ah_output
 };
 
-static struct net_protocol ah4_protocol = {
+static const struct net_protocol ah4_protocol = {
 	.handler	=	xfrm4_rcv,
 	.err_handler	=	ah4_err,
 	.no_policy	=	1,
diff --git a/net/ipv4/devinet.c b/net/ipv4/devinet.c
index 3863c3a4223..e92f1fd28aa 100644
--- a/net/ipv4/devinet.c
+++ b/net/ipv4/devinet.c
@@ -1087,6 +1087,12 @@ static int inetdev_event(struct notifier_block *this, unsigned long event,
 	case NETDEV_DOWN:
 		ip_mc_down(in_dev);
 		break;
+	case NETDEV_BONDING_OLDTYPE:
+		ip_mc_unmap(in_dev);
+		break;
+	case NETDEV_BONDING_NEWTYPE:
+		ip_mc_remap(in_dev);
+		break;
 	case NETDEV_CHANGEMTU:
 		if (inetdev_valid_mtu(dev->mtu))
 			break;
@@ -1264,10 +1270,10 @@ static void inet_forward_change(struct net *net)
 }
 
 static int devinet_conf_proc(ctl_table *ctl, int write,
-			     struct file *filp, void __user *buffer,
+			     void __user *buffer,
 			     size_t *lenp, loff_t *ppos)
 {
-	int ret = proc_dointvec(ctl, write, filp, buffer, lenp, ppos);
+	int ret = proc_dointvec(ctl, write, buffer, lenp, ppos);
 
 	if (write) {
 		struct ipv4_devconf *cnf = ctl->extra1;
@@ -1336,12 +1342,12 @@ static int devinet_conf_sysctl(ctl_table *table,
 }
 
 static int devinet_sysctl_forward(ctl_table *ctl, int write,
-				  struct file *filp, void __user *buffer,
+				  void __user *buffer,
 				  size_t *lenp, loff_t *ppos)
 {
 	int *valp = ctl->data;
 	int val = *valp;
-	int ret = proc_dointvec(ctl, write, filp, buffer, lenp, ppos);
+	int ret = proc_dointvec(ctl, write, buffer, lenp, ppos);
 
 	if (write && *valp != val) {
 		struct net *net = ctl->extra2;
@@ -1366,12 +1372,12 @@ static int devinet_sysctl_forward(ctl_table *ctl, int write,
 }
 
 int ipv4_doint_and_flush(ctl_table *ctl, int write,
-			 struct file *filp, void __user *buffer,
+			 void __user *buffer,
 			 size_t *lenp, loff_t *ppos)
 {
 	int *valp = ctl->data;
 	int val = *valp;
-	int ret = proc_dointvec(ctl, write, filp, buffer, lenp, ppos);
+	int ret = proc_dointvec(ctl, write, buffer, lenp, ppos);
 	struct net *net = ctl->extra2;
 
 	if (write && *valp != val)
diff --git a/net/ipv4/esp4.c b/net/ipv4/esp4.c
index 18bb383ea39..12f7287e902 100644
--- a/net/ipv4/esp4.c
+++ b/net/ipv4/esp4.c
@@ -615,7 +615,7 @@ static const struct xfrm_type esp_type =
 	.output		= esp_output
 };
 
-static struct net_protocol esp4_protocol = {
+static const struct net_protocol esp4_protocol = {
 	.handler	=	xfrm4_rcv,
 	.err_handler	=	esp4_err,
 	.no_policy	=	1,
diff --git a/net/ipv4/icmp.c b/net/ipv4/icmp.c
index 97c410e8438..5bc13fe816d 100644
--- a/net/ipv4/icmp.c
+++ b/net/ipv4/icmp.c
@@ -655,7 +655,7 @@ static void icmp_unreach(struct sk_buff *skb)
 	struct iphdr *iph;
 	struct icmphdr *icmph;
 	int hash, protocol;
-	struct net_protocol *ipprot;
+	const struct net_protocol *ipprot;
 	u32 info = 0;
 	struct net *net;
 
diff --git a/net/ipv4/igmp.c b/net/ipv4/igmp.c
index 01b4284ed69..d41e5de79a8 100644
--- a/net/ipv4/igmp.c
+++ b/net/ipv4/igmp.c
@@ -1298,6 +1298,28 @@ void ip_mc_dec_group(struct in_device *in_dev, __be32 addr)
 	}
 }
 
+/* Device changing type */
+
+void ip_mc_unmap(struct in_device *in_dev)
+{
+	struct ip_mc_list *i;
+
+	ASSERT_RTNL();
+
+	for (i = in_dev->mc_list; i; i = i->next)
+		igmp_group_dropped(i);
+}
+
+void ip_mc_remap(struct in_device *in_dev)
+{
+	struct ip_mc_list *i;
+
+	ASSERT_RTNL();
+
+	for (i = in_dev->mc_list; i; i = i->next)
+		igmp_group_added(i);
+}
+
 /* Device going down */
 
 void ip_mc_down(struct in_device *in_dev)
diff --git a/net/ipv4/ip_gre.c b/net/ipv4/ip_gre.c
index 533afaadefd..41ada9904d3 100644
--- a/net/ipv4/ip_gre.c
+++ b/net/ipv4/ip_gre.c
@@ -66,10 +66,7 @@
    solution, but it supposes maintaing new variable in ALL
    skb, even if no tunneling is used.
 
-   Current solution: t->recursion lock breaks dead loops. It looks
-   like dev->tbusy flag, but I preferred new variable, because
-   the semantics is different. One day, when hard_start_xmit
-   will be multithreaded we will have to use skb->encapsulation.
+   Current solution: HARD_TX_LOCK lock breaks dead loops.
 
 
 
@@ -678,11 +675,6 @@ static netdev_tx_t ipgre_tunnel_xmit(struct sk_buff *skb, struct net_device *dev
 	__be32 dst;
 	int    mtu;
 
-	if (tunnel->recursion++) {
-		stats->collisions++;
-		goto tx_error;
-	}
-
 	if (dev->type == ARPHRD_ETHER)
 		IPCB(skb)->flags = 0;
 
@@ -820,7 +812,6 @@ static netdev_tx_t ipgre_tunnel_xmit(struct sk_buff *skb, struct net_device *dev
 			ip_rt_put(rt);
 			stats->tx_dropped++;
 			dev_kfree_skb(skb);
-			tunnel->recursion--;
 			return NETDEV_TX_OK;
 		}
 		if (skb->sk)
@@ -888,7 +879,6 @@ static netdev_tx_t ipgre_tunnel_xmit(struct sk_buff *skb, struct net_device *dev
 	nf_reset(skb);
 
 	IPTUNNEL_XMIT();
-	tunnel->recursion--;
 	return NETDEV_TX_OK;
 
 tx_error_icmp:
@@ -897,7 +887,6 @@ tx_error_icmp:
 tx_error:
 	stats->tx_errors++;
 	dev_kfree_skb(skb);
-	tunnel->recursion--;
 	return NETDEV_TX_OK;
 }
 
@@ -1288,7 +1277,7 @@ static void ipgre_fb_tunnel_init(struct net_device *dev)
 }
 
 
-static struct net_protocol ipgre_protocol = {
+static const struct net_protocol ipgre_protocol = {
 	.handler	=	ipgre_rcv,
 	.err_handler	=	ipgre_err,
 	.netns_ok	=	1,
diff --git a/net/ipv4/ip_input.c b/net/ipv4/ip_input.c
index db46b4b5b2b..6c98b43badf 100644
--- a/net/ipv4/ip_input.c
+++ b/net/ipv4/ip_input.c
@@ -202,7 +202,7 @@ static int ip_local_deliver_finish(struct sk_buff *skb)
 	{
 		int protocol = ip_hdr(skb)->protocol;
 		int hash, raw;
-		struct net_protocol *ipprot;
+		const struct net_protocol *ipprot;
 
 	resubmit:
 		raw = raw_local_deliver(skb, protocol);
diff --git a/net/ipv4/ip_sockglue.c b/net/ipv4/ip_sockglue.c
index fc7993e9061..5a0693576e8 100644
--- a/net/ipv4/ip_sockglue.c
+++ b/net/ipv4/ip_sockglue.c
@@ -611,6 +611,9 @@ static int do_ip_setsockopt(struct sock *sk, int level,
 		 *	Check the arguments are allowable
 		 */
 
+		if (optlen < sizeof(struct in_addr))
+			goto e_inval;
+
 		err = -EFAULT;
 		if (optlen >= sizeof(struct ip_mreqn)) {
 			if (copy_from_user(&mreq, optval, sizeof(mreq)))
diff --git a/net/ipv4/ipcomp.c b/net/ipv4/ipcomp.c
index 3262ce06294..38fbf04150a 100644
--- a/net/ipv4/ipcomp.c
+++ b/net/ipv4/ipcomp.c
@@ -146,7 +146,7 @@ static const struct xfrm_type ipcomp_type = {
 	.output		= ipcomp_output
 };
 
-static struct net_protocol ipcomp4_protocol = {
+static const struct net_protocol ipcomp4_protocol = {
 	.handler	=	xfrm4_rcv,
 	.err_handler	=	ipcomp4_err,
 	.no_policy	=	1,
diff --git a/net/ipv4/ipip.c b/net/ipv4/ipip.c
index 62548cb0923..08ccd344de7 100644
--- a/net/ipv4/ipip.c
+++ b/net/ipv4/ipip.c
@@ -402,11 +402,6 @@ static netdev_tx_t ipip_tunnel_xmit(struct sk_buff *skb, struct net_device *dev)
 	__be32 dst = tiph->daddr;
 	int    mtu;
 
-	if (tunnel->recursion++) {
-		stats->collisions++;
-		goto tx_error;
-	}
-
 	if (skb->protocol != htons(ETH_P_IP))
 		goto tx_error;
 
@@ -485,7 +480,6 @@ static netdev_tx_t ipip_tunnel_xmit(struct sk_buff *skb, struct net_device *dev)
 			ip_rt_put(rt);
 			stats->tx_dropped++;
 			dev_kfree_skb(skb);
-			tunnel->recursion--;
 			return NETDEV_TX_OK;
 		}
 		if (skb->sk)
@@ -523,7 +517,6 @@ static netdev_tx_t ipip_tunnel_xmit(struct sk_buff *skb, struct net_device *dev)
 	nf_reset(skb);
 
 	IPTUNNEL_XMIT();
-	tunnel->recursion--;
 	return NETDEV_TX_OK;
 
 tx_error_icmp:
@@ -531,7 +524,6 @@ tx_error_icmp:
 tx_error:
 	stats->tx_errors++;
 	dev_kfree_skb(skb);
-	tunnel->recursion--;
 	return NETDEV_TX_OK;
 }
 
diff --git a/net/ipv4/ipmr.c b/net/ipv4/ipmr.c
index 65d421cf5bc..c43ec2d51ce 100644
--- a/net/ipv4/ipmr.c
+++ b/net/ipv4/ipmr.c
@@ -99,10 +99,6 @@ static int ipmr_cache_report(struct net *net,
 			     struct sk_buff *pkt, vifi_t vifi, int assert);
 static int ipmr_fill_mroute(struct sk_buff *skb, struct mfc_cache *c, struct rtmsg *rtm);
 
-#ifdef CONFIG_IP_PIMSM_V2
-static struct net_protocol pim_protocol;
-#endif
-
 static struct timer_list ipmr_expire_timer;
 
 /* Service routines creating virtual interfaces: DVMRP tunnels and PIMREG */
@@ -1945,7 +1941,7 @@ static const struct file_operations ipmr_mfc_fops = {
 #endif
 
 #ifdef CONFIG_IP_PIMSM_V2
-static struct net_protocol pim_protocol = {
+static const struct net_protocol pim_protocol = {
 	.handler	=	pim_rcv,
 	.netns_ok	=	1,
 };
diff --git a/net/ipv4/protocol.c b/net/ipv4/protocol.c
index a2e5fc0a15e..542f22fc98b 100644
--- a/net/ipv4/protocol.c
+++ b/net/ipv4/protocol.c
@@ -28,14 +28,14 @@
 #include <linux/spinlock.h>
 #include <net/protocol.h>
 
-struct net_protocol *inet_protos[MAX_INET_PROTOS] ____cacheline_aligned_in_smp;
+const struct net_protocol *inet_protos[MAX_INET_PROTOS] ____cacheline_aligned_in_smp;
 static DEFINE_SPINLOCK(inet_proto_lock);
 
 /*
  *	Add a protocol handler to the hash tables
  */
 
-int inet_add_protocol(struct net_protocol *prot, unsigned char protocol)
+int inet_add_protocol(const struct net_protocol *prot, unsigned char protocol)
 {
 	int hash, ret;
 
@@ -57,7 +57,7 @@ int inet_add_protocol(struct net_protocol *prot, unsigned char protocol)
  *	Remove a protocol from the hash tables.
  */
 
-int inet_del_protocol(struct net_protocol *prot, unsigned char protocol)
+int inet_del_protocol(const struct net_protocol *prot, unsigned char protocol)
 {
 	int hash, ret;
 
diff --git a/net/ipv4/route.c b/net/ipv4/route.c
index 91867d3e632..bb419925202 100644
--- a/net/ipv4/route.c
+++ b/net/ipv4/route.c
@@ -3036,7 +3036,7 @@ void ip_rt_multicast_event(struct in_device *in_dev)
 
 #ifdef CONFIG_SYSCTL
 static int ipv4_sysctl_rtcache_flush(ctl_table *__ctl, int write,
-					struct file *filp, void __user *buffer,
+					void __user *buffer,
 					size_t *lenp, loff_t *ppos)
 {
 	if (write) {
@@ -3046,7 +3046,7 @@ static int ipv4_sysctl_rtcache_flush(ctl_table *__ctl, int write,
 
 		memcpy(&ctl, __ctl, sizeof(ctl));
 		ctl.data = &flush_delay;
-		proc_dointvec(&ctl, write, filp, buffer, lenp, ppos);
+		proc_dointvec(&ctl, write, buffer, lenp, ppos);
 
 		net = (struct net *)__ctl->extra1;
 		rt_cache_flush(net, flush_delay);
@@ -3106,12 +3106,11 @@ static void rt_secret_reschedule(int old)
 }
 
 static int ipv4_sysctl_rt_secret_interval(ctl_table *ctl, int write,
-					  struct file *filp,
 					  void __user *buffer, size_t *lenp,
 					  loff_t *ppos)
 {
 	int old = ip_rt_secret_interval;
-	int ret = proc_dointvec_jiffies(ctl, write, filp, buffer, lenp, ppos);
+	int ret = proc_dointvec_jiffies(ctl, write, buffer, lenp, ppos);
 
 	rt_secret_reschedule(old);
 
@@ -3414,7 +3413,7 @@ int __init ip_rt_init(void)
 		alloc_large_system_hash("IP route cache",
 					sizeof(struct rt_hash_bucket),
 					rhash_entries,
-					(num_physpages >= 128 * 1024) ?
+					(totalram_pages >= 128 * 1024) ?
 					15 : 17,
 					0,
 					&rt_hash_log,
diff --git a/net/ipv4/sysctl_net_ipv4.c b/net/ipv4/sysctl_net_ipv4.c
index 4710d219f06..2dcf04d9b00 100644
--- a/net/ipv4/sysctl_net_ipv4.c
+++ b/net/ipv4/sysctl_net_ipv4.c
@@ -36,7 +36,7 @@ static void set_local_port_range(int range[2])
 }
 
 /* Validate changes from /proc interface. */
-static int ipv4_local_port_range(ctl_table *table, int write, struct file *filp,
+static int ipv4_local_port_range(ctl_table *table, int write,
 				 void __user *buffer,
 				 size_t *lenp, loff_t *ppos)
 {
@@ -51,7 +51,7 @@ static int ipv4_local_port_range(ctl_table *table, int write, struct file *filp,
 	};
 
 	inet_get_local_port_range(range, range + 1);
-	ret = proc_dointvec_minmax(&tmp, write, filp, buffer, lenp, ppos);
+	ret = proc_dointvec_minmax(&tmp, write, buffer, lenp, ppos);
 
 	if (write && ret == 0) {
 		if (range[1] < range[0])
@@ -91,7 +91,7 @@ static int ipv4_sysctl_local_port_range(ctl_table *table,
 }
 
 
-static int proc_tcp_congestion_control(ctl_table *ctl, int write, struct file * filp,
+static int proc_tcp_congestion_control(ctl_table *ctl, int write,
 				       void __user *buffer, size_t *lenp, loff_t *ppos)
 {
 	char val[TCP_CA_NAME_MAX];
@@ -103,7 +103,7 @@ static int proc_tcp_congestion_control(ctl_table *ctl, int write, struct file *
 
 	tcp_get_default_congestion_control(val);
 
-	ret = proc_dostring(&tbl, write, filp, buffer, lenp, ppos);
+	ret = proc_dostring(&tbl, write, buffer, lenp, ppos);
 	if (write && ret == 0)
 		ret = tcp_set_default_congestion_control(val);
 	return ret;
@@ -129,7 +129,7 @@ static int sysctl_tcp_congestion_control(ctl_table *table,
 }
 
 static int proc_tcp_available_congestion_control(ctl_table *ctl,
-						 int write, struct file * filp,
+						 int write,
 						 void __user *buffer, size_t *lenp,
 						 loff_t *ppos)
 {
@@ -140,13 +140,13 @@ static int proc_tcp_available_congestion_control(ctl_table *ctl,
 	if (!tbl.data)
 		return -ENOMEM;
 	tcp_get_available_congestion_control(tbl.data, TCP_CA_BUF_MAX);
-	ret = proc_dostring(&tbl, write, filp, buffer, lenp, ppos);
+	ret = proc_dostring(&tbl, write, buffer, lenp, ppos);
 	kfree(tbl.data);
 	return ret;
 }
 
 static int proc_allowed_congestion_control(ctl_table *ctl,
-					   int write, struct file * filp,
+					   int write,
 					   void __user *buffer, size_t *lenp,
 					   loff_t *ppos)
 {
@@ -158,7 +158,7 @@ static int proc_allowed_congestion_control(ctl_table *ctl,
 		return -ENOMEM;
 
 	tcp_get_allowed_congestion_control(tbl.data, tbl.maxlen);
-	ret = proc_dostring(&tbl, write, filp, buffer, lenp, ppos);
+	ret = proc_dostring(&tbl, write, buffer, lenp, ppos);
 	if (write && ret == 0)
 		ret = tcp_set_allowed_congestion_control(tbl.data);
 	kfree(tbl.data);
diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c
index edeea060db4..21387ebabf0 100644
--- a/net/ipv4/tcp.c
+++ b/net/ipv4/tcp.c
@@ -2012,7 +2012,7 @@ int tcp_disconnect(struct sock *sk, int flags)
 	tp->snd_cwnd = 2;
 	icsk->icsk_probes_out = 0;
 	tp->packets_out = 0;
-	tp->snd_ssthresh = 0x7fffffff;
+	tp->snd_ssthresh = TCP_INFINITE_SSTHRESH;
 	tp->snd_cwnd_cnt = 0;
 	tp->bytes_acked = 0;
 	tcp_set_ca_state(sk, TCP_CA_Open);
@@ -2862,7 +2862,7 @@ void __init tcp_init(void)
 		alloc_large_system_hash("TCP established",
 					sizeof(struct inet_ehash_bucket),
 					thash_entries,
-					(num_physpages >= 128 * 1024) ?
+					(totalram_pages >= 128 * 1024) ?
 					13 : 15,
 					0,
 					&tcp_hashinfo.ehash_size,
@@ -2879,7 +2879,7 @@ void __init tcp_init(void)
 		alloc_large_system_hash("TCP bind",
 					sizeof(struct inet_bind_hashbucket),
 					tcp_hashinfo.ehash_size,
-					(num_physpages >= 128 * 1024) ?
+					(totalram_pages >= 128 * 1024) ?
 					13 : 15,
 					0,
 					&tcp_hashinfo.bhash_size,
diff --git a/net/ipv4/tcp_input.c b/net/ipv4/tcp_input.c
index af6d6fa00db..d86784be7ab 100644
--- a/net/ipv4/tcp_input.c
+++ b/net/ipv4/tcp_input.c
@@ -761,7 +761,7 @@ void tcp_update_metrics(struct sock *sk)
 			set_dst_metric_rtt(dst, RTAX_RTTVAR, var);
 		}
 
-		if (tp->snd_ssthresh >= 0xFFFF) {
+		if (tcp_in_initial_slowstart(tp)) {
 			/* Slow start still did not finish. */
 			if (dst_metric(dst, RTAX_SSTHRESH) &&
 			    !dst_metric_locked(dst, RTAX_SSTHRESH) &&
diff --git a/net/ipv4/tcp_ipv4.c b/net/ipv4/tcp_ipv4.c
index 0543561da99..7cda24b53f6 100644
--- a/net/ipv4/tcp_ipv4.c
+++ b/net/ipv4/tcp_ipv4.c
@@ -1808,7 +1808,7 @@ static int tcp_v4_init_sock(struct sock *sk)
 	/* See draft-stevens-tcpca-spec-01 for discussion of the
 	 * initialization of these values.
 	 */
-	tp->snd_ssthresh = 0x7fffffff;	/* Infinity */
+	tp->snd_ssthresh = TCP_INFINITE_SSTHRESH;
 	tp->snd_cwnd_clamp = ~0;
 	tp->mss_cache = 536;
 
@@ -2284,7 +2284,7 @@ static void get_tcp4_sock(struct sock *sk, struct seq_file *f, int i, int *len)
 		jiffies_to_clock_t(icsk->icsk_ack.ato),
 		(icsk->icsk_ack.quick << 1) | icsk->icsk_ack.pingpong,
 		tp->snd_cwnd,
-		tp->snd_ssthresh >= 0xFFFF ? -1 : tp->snd_ssthresh,
+		tcp_in_initial_slowstart(tp) ? -1 : tp->snd_ssthresh,
 		len);
 }
 
diff --git a/net/ipv4/tcp_minisocks.c b/net/ipv4/tcp_minisocks.c
index e48c37d74d7..624c3c9b3c2 100644
--- a/net/ipv4/tcp_minisocks.c
+++ b/net/ipv4/tcp_minisocks.c
@@ -363,7 +363,7 @@ void tcp_twsk_destructor(struct sock *sk)
 #ifdef CONFIG_TCP_MD5SIG
 	struct tcp_timewait_sock *twsk = tcp_twsk(sk);
 	if (twsk->tw_md5_keylen)
-		tcp_put_md5sig_pool();
+		tcp_free_md5sig_pool();
 #endif
 }
 
@@ -410,7 +410,7 @@ struct sock *tcp_create_openreq_child(struct sock *sk, struct request_sock *req,
 		newtp->retrans_out = 0;
 		newtp->sacked_out = 0;
 		newtp->fackets_out = 0;
-		newtp->snd_ssthresh = 0x7fffffff;
+		newtp->snd_ssthresh = TCP_INFINITE_SSTHRESH;
 
 		/* So many TCP implementations out there (incorrectly) count the
 		 * initial SYN frame in their delayed-ACK and congestion control
diff --git a/net/ipv4/tunnel4.c b/net/ipv4/tunnel4.c
index cb1f0e83830..3959e0ca456 100644
--- a/net/ipv4/tunnel4.c
+++ b/net/ipv4/tunnel4.c
@@ -132,7 +132,7 @@ static void tunnel64_err(struct sk_buff *skb, u32 info)
 }
 #endif
 
-static struct net_protocol tunnel4_protocol = {
+static const struct net_protocol tunnel4_protocol = {
 	.handler	=	tunnel4_rcv,
 	.err_handler	=	tunnel4_err,
 	.no_policy	=	1,
@@ -140,7 +140,7 @@ static struct net_protocol tunnel4_protocol = {
 };
 
 #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
-static struct net_protocol tunnel64_protocol = {
+static const struct net_protocol tunnel64_protocol = {
 	.handler	=	tunnel64_rcv,
 	.err_handler	=	tunnel64_err,
 	.no_policy	=	1,
diff --git a/net/ipv4/udplite.c b/net/ipv4/udplite.c
index c784891cb7e..95248d7f75e 100644
--- a/net/ipv4/udplite.c
+++ b/net/ipv4/udplite.c
@@ -25,7 +25,7 @@ static void udplite_err(struct sk_buff *skb, u32 info)
 	__udp4_lib_err(skb, info, &udplite_table);
 }
 
-static	struct net_protocol udplite_protocol = {
+static const struct net_protocol udplite_protocol = {
 	.handler	= udplite_rcv,
 	.err_handler	= udplite_err,
 	.no_policy	= 1,