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

* master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6:
  [NETFILTER] x_table.c: sem2mutex
  [IPV4]: Aggregate route entries with different TOS values
  [TCP]: Mark tcp_*mem[] __read_mostly.
  [TCP]: Set default max buffers from memory pool size
  [SCTP]: Fix up sctp_rcv return value
  [NET]: Take RTNL when unregistering notifier
  [WIRELESS]: Fix config dependencies.
  [NET]: Fill in a 32-bit hole in struct sock on 64-bit platforms.
  [NET]: Ensure device name passed to SO_BINDTODEVICE is NULL terminated.
  [MODULES]: Don't allow statically declared exports
  [BRIDGE]: Unaligned accesses in the ethernet bridge

drivers/net/wireless/Kconfig

@@ -27,6 +27,7 @@ config NET_RADIO
 
 config NET_WIRELESS_RTNETLINK
 	bool "Wireless Extension API over RtNetlink"
+	depends on NET_RADIO
 	---help---
 	  Support the Wireless Extension API over the RtNetlink socket
 	  in addition to the traditional ioctl interface (selected above).

include/linux/module.h

@@ -183,6 +183,7 @@ void *__symbol_get_gpl(const char *symbol);
 
 /* For every exported symbol, place a struct in the __ksymtab section */
 #define __EXPORT_SYMBOL(sym, sec)				\
+	extern typeof(sym) sym;					\
 	__CRC_SYMBOL(sym, sec)					\
 	static const char __kstrtab_##sym[]			\
 	__attribute__((section("__ksymtab_strings")))		\

include/net/route.h

@@ -110,7 +110,7 @@ extern struct ip_rt_acct *ip_rt_acct;
 struct in_device;
 extern int		ip_rt_init(void);
 extern void		ip_rt_redirect(u32 old_gw, u32 dst, u32 new_gw,
-				       u32 src, u8 tos, struct net_device *dev);
+				       u32 src, struct net_device *dev);
 extern void		ip_rt_advice(struct rtable **rp, int advice);
 extern void		rt_cache_flush(int how);
 extern int		__ip_route_output_key(struct rtable **, const struct flowi *flp);

include/net/sock.h

@@ -210,6 +210,7 @@ struct sock {
 	gfp_t			sk_allocation;
 	int			sk_sndbuf;
 	int			sk_route_caps;
+	int			sk_rcvlowat;
 	unsigned long 		sk_flags;
 	unsigned long	        sk_lingertime;
 	/*
@@ -230,7 +231,6 @@ struct sock {
 	unsigned short		sk_max_ack_backlog;
 	__u32			sk_priority;
 	struct ucred		sk_peercred;
-	int			sk_rcvlowat;
 	long			sk_rcvtimeo;
 	long			sk_sndtimeo;
 	struct sk_filter      	*sk_filter;

net/bridge/br_stp_bpdu.c

@@ -19,6 +19,7 @@
 #include <linux/llc.h>
 #include <net/llc.h>
 #include <net/llc_pdu.h>
+#include <asm/unaligned.h>
 
 #include "br_private.h"
 #include "br_private_stp.h"
@@ -59,12 +60,12 @@ static inline void br_set_ticks(unsigned char *dest, int j)
 {
 	unsigned long ticks = (STP_HZ * j)/ HZ;
 
-	*((__be16 *) dest) = htons(ticks);
+	put_unaligned(htons(ticks), (__be16 *)dest);
 }
 
 static inline int br_get_ticks(const unsigned char *src)
 {
-	unsigned long ticks = ntohs(*(__be16 *)src);
+	unsigned long ticks = ntohs(get_unaligned((__be16 *)src));
 
 	return (ticks * HZ + STP_HZ - 1) / STP_HZ;
 }

net/core/dev.c

@@ -977,7 +977,12 @@ int register_netdevice_notifier(struct notifier_block *nb)
 
 int unregister_netdevice_notifier(struct notifier_block *nb)
 {
-	return notifier_chain_unregister(&netdev_chain, nb);
+	int err;
+
+	rtnl_lock();
+	err = notifier_chain_unregister(&netdev_chain, nb);
+	rtnl_unlock();
+	return err;
 }
 
 /**

net/core/sock.c

@@ -404,8 +404,9 @@ int sock_setsockopt(struct socket *sock, int level, int optname,
 			if (!valbool) {
 				sk->sk_bound_dev_if = 0;
 			} else {
-				if (optlen > IFNAMSIZ) 
-					optlen = IFNAMSIZ; 
+				if (optlen > IFNAMSIZ - 1)
+					optlen = IFNAMSIZ - 1;
+				memset(devname, 0, sizeof(devname));
 				if (copy_from_user(devname, optval, optlen)) {
 					ret = -EFAULT;
 					break;

net/ipv4/icmp.c

@@ -753,7 +753,7 @@ static void icmp_redirect(struct sk_buff *skb)
 	case ICMP_REDIR_HOST:
 	case ICMP_REDIR_HOSTTOS:
 		ip_rt_redirect(skb->nh.iph->saddr, ip, skb->h.icmph->un.gateway,
-			       iph->saddr, iph->tos, skb->dev);
+			       iph->saddr, skb->dev);
 		break;
   	}
 out:

net/ipv4/route.c

@@ -55,6 +55,8 @@
  *	Robert Olsson		:	Added rt_cache statistics
  *	Arnaldo C. Melo		:	Convert proc stuff to seq_file
  *	Eric Dumazet		:	hashed spinlocks and rt_check_expire() fixes.
+ * 	Ilia Sotnikov		:	Ignore TOS on PMTUD and Redirect
+ * 	Ilia Sotnikov		:	Removed TOS from hash calculations
  *
  *		This program is free software; you can redistribute it and/or
  *		modify it under the terms of the GNU General Public License
@@ -247,9 +249,9 @@ static DEFINE_PER_CPU(struct rt_cache_stat, rt_cache_stat);
 static int rt_intern_hash(unsigned hash, struct rtable *rth,
 				struct rtable **res);
 
-static unsigned int rt_hash_code(u32 daddr, u32 saddr, u8 tos)
+static unsigned int rt_hash_code(u32 daddr, u32 saddr)
 {
-	return (jhash_3words(daddr, saddr, (u32) tos, rt_hash_rnd)
+	return (jhash_2words(daddr, saddr, rt_hash_rnd)
 		& rt_hash_mask);
 }
 
@@ -1111,16 +1113,14 @@ static void rt_del(unsigned hash, struct rtable *rt)
 }
 
 void ip_rt_redirect(u32 old_gw, u32 daddr, u32 new_gw,
-		    u32 saddr, u8 tos, struct net_device *dev)
+		    u32 saddr, struct net_device *dev)
 {
 	int i, k;
 	struct in_device *in_dev = in_dev_get(dev);
 	struct rtable *rth, **rthp;
 	u32  skeys[2] = { saddr, 0 };
 	int  ikeys[2] = { dev->ifindex, 0 };
 
-	tos &= IPTOS_RT_MASK;
-
 	if (!in_dev)
 		return;
 
@@ -1141,8 +1141,7 @@ void ip_rt_redirect(u32 old_gw, u32 daddr, u32 new_gw,
 	for (i = 0; i < 2; i++) {
 		for (k = 0; k < 2; k++) {
 			unsigned hash = rt_hash_code(daddr,
-						     skeys[i] ^ (ikeys[k] << 5),
-						     tos);
+						     skeys[i] ^ (ikeys[k] << 5));
 
 			rthp=&rt_hash_table[hash].chain;
 
@@ -1152,7 +1151,6 @@ void ip_rt_redirect(u32 old_gw, u32 daddr, u32 new_gw,
 
 				if (rth->fl.fl4_dst != daddr ||
 				    rth->fl.fl4_src != skeys[i] ||
-				    rth->fl.fl4_tos != tos ||
 				    rth->fl.oif != ikeys[k] ||
 				    rth->fl.iif != 0) {
 					rthp = &rth->u.rt_next;
@@ -1232,10 +1230,9 @@ void ip_rt_redirect(u32 old_gw, u32 daddr, u32 new_gw,
 	if (IN_DEV_LOG_MARTIANS(in_dev) && net_ratelimit())
 		printk(KERN_INFO "Redirect from %u.%u.%u.%u on %s about "
 			"%u.%u.%u.%u ignored.\n"
-			"  Advised path = %u.%u.%u.%u -> %u.%u.%u.%u, "
-			"tos %02x\n",
+			"  Advised path = %u.%u.%u.%u -> %u.%u.%u.%u\n",
 		       NIPQUAD(old_gw), dev->name, NIPQUAD(new_gw),
-		       NIPQUAD(saddr), NIPQUAD(daddr), tos);
+		       NIPQUAD(saddr), NIPQUAD(daddr));
 #endif
 	in_dev_put(in_dev);
 }
@@ -1253,8 +1250,7 @@ static struct dst_entry *ipv4_negative_advice(struct dst_entry *dst)
 			   rt->u.dst.expires) {
 			unsigned hash = rt_hash_code(rt->fl.fl4_dst,
 						     rt->fl.fl4_src ^
-							(rt->fl.oif << 5),
-						     rt->fl.fl4_tos);
+							(rt->fl.oif << 5));
 #if RT_CACHE_DEBUG >= 1
 			printk(KERN_DEBUG "ip_rt_advice: redirect to "
 					  "%u.%u.%u.%u/%02x dropped\n",
@@ -1391,14 +1387,13 @@ unsigned short ip_rt_frag_needed(struct iphdr *iph, unsigned short new_mtu)
 	struct rtable *rth;
 	u32  skeys[2] = { iph->saddr, 0, };
 	u32  daddr = iph->daddr;
-	u8   tos = iph->tos & IPTOS_RT_MASK;
 	unsigned short est_mtu = 0;
 
 	if (ipv4_config.no_pmtu_disc)
 		return 0;
 
 	for (i = 0; i < 2; i++) {
-		unsigned hash = rt_hash_code(daddr, skeys[i], tos);
+		unsigned hash = rt_hash_code(daddr, skeys[i]);
 
 		rcu_read_lock();
 		for (rth = rcu_dereference(rt_hash_table[hash].chain); rth;
@@ -1407,7 +1402,6 @@ unsigned short ip_rt_frag_needed(struct iphdr *iph, unsigned short new_mtu)
 			    rth->fl.fl4_src == skeys[i] &&
 			    rth->rt_dst  == daddr &&
 			    rth->rt_src  == iph->saddr &&
-			    rth->fl.fl4_tos == tos &&
 			    rth->fl.iif == 0 &&
 			    !(dst_metric_locked(&rth->u.dst, RTAX_MTU))) {
 				unsigned short mtu = new_mtu;
@@ -1658,7 +1652,7 @@ static int ip_route_input_mc(struct sk_buff *skb, u32 daddr, u32 saddr,
 	RT_CACHE_STAT_INC(in_slow_mc);
 
 	in_dev_put(in_dev);
-	hash = rt_hash_code(daddr, saddr ^ (dev->ifindex << 5), tos);
+	hash = rt_hash_code(daddr, saddr ^ (dev->ifindex << 5));
 	return rt_intern_hash(hash, rth, (struct rtable**) &skb->dst);
 
 e_nobufs:
@@ -1823,7 +1817,7 @@ static inline int ip_mkroute_input_def(struct sk_buff *skb,
 		return err;
 
 	/* put it into the cache */
-	hash = rt_hash_code(daddr, saddr ^ (fl->iif << 5), tos);
+	hash = rt_hash_code(daddr, saddr ^ (fl->iif << 5));
 	return rt_intern_hash(hash, rth, (struct rtable**)&skb->dst);	
 }
 
@@ -1864,7 +1858,7 @@ static inline int ip_mkroute_input(struct sk_buff *skb,
 			return err;
 
 		/* put it into the cache */
-		hash = rt_hash_code(daddr, saddr ^ (fl->iif << 5), tos);
+		hash = rt_hash_code(daddr, saddr ^ (fl->iif << 5));
 		err = rt_intern_hash(hash, rth, &rtres);
 		if (err)
 			return err;
@@ -2041,7 +2035,7 @@ out:	return err;
 		rth->rt_flags 	&= ~RTCF_LOCAL;
 	}
 	rth->rt_type	= res.type;
-	hash = rt_hash_code(daddr, saddr ^ (fl.iif << 5), tos);
+	hash = rt_hash_code(daddr, saddr ^ (fl.iif << 5));
 	err = rt_intern_hash(hash, rth, (struct rtable**)&skb->dst);
 	goto done;
 
@@ -2088,7 +2082,7 @@ int ip_route_input(struct sk_buff *skb, u32 daddr, u32 saddr,
 	int iif = dev->ifindex;
 
 	tos &= IPTOS_RT_MASK;
-	hash = rt_hash_code(daddr, saddr ^ (iif << 5), tos);
+	hash = rt_hash_code(daddr, saddr ^ (iif << 5));
 
 	rcu_read_lock();
 	for (rth = rcu_dereference(rt_hash_table[hash].chain); rth;
@@ -2286,10 +2280,8 @@ static inline int ip_mkroute_output_def(struct rtable **rp,
 	int err = __mkroute_output(&rth, res, fl, oldflp, dev_out, flags);
 	unsigned hash;
 	if (err == 0) {
-		u32 tos = RT_FL_TOS(oldflp);
-
 		hash = rt_hash_code(oldflp->fl4_dst, 
-				    oldflp->fl4_src ^ (oldflp->oif << 5), tos);
+				    oldflp->fl4_src ^ (oldflp->oif << 5));
 		err = rt_intern_hash(hash, rth, rp);
 	}
 
@@ -2304,7 +2296,6 @@ static inline int ip_mkroute_output(struct rtable** rp,
 				    unsigned flags)
 {
 #ifdef CONFIG_IP_ROUTE_MULTIPATH_CACHED
-	u32 tos = RT_FL_TOS(oldflp);
 	unsigned char hop;
 	unsigned hash;
 	int err = -EINVAL;
@@ -2334,7 +2325,7 @@ static inline int ip_mkroute_output(struct rtable** rp,
 
 			hash = rt_hash_code(oldflp->fl4_dst, 
 					    oldflp->fl4_src ^
-					    (oldflp->oif << 5), tos);
+					    (oldflp->oif << 5));
 			err = rt_intern_hash(hash, rth, rp);
 
 			/* forward hop information to multipath impl. */
@@ -2563,7 +2554,7 @@ int __ip_route_output_key(struct rtable **rp, const struct flowi *flp)
 	unsigned hash;
 	struct rtable *rth;
 
-	hash = rt_hash_code(flp->fl4_dst, flp->fl4_src ^ (flp->oif << 5), flp->fl4_tos);
+	hash = rt_hash_code(flp->fl4_dst, flp->fl4_src ^ (flp->oif << 5));
 
 	rcu_read_lock_bh();
 	for (rth = rcu_dereference(rt_hash_table[hash].chain); rth;

net/ipv4/tcp.c

@@ -257,6 +257,7 @@
 #include <linux/fs.h>
 #include <linux/random.h>
 #include <linux/bootmem.h>
+#include <linux/cache.h>
 
 #include <net/icmp.h>
 #include <net/tcp.h>
@@ -275,9 +276,9 @@ atomic_t tcp_orphan_count = ATOMIC_INIT(0);
 
 EXPORT_SYMBOL_GPL(tcp_orphan_count);
 
-int sysctl_tcp_mem[3];
-int sysctl_tcp_wmem[3] = { 4 * 1024, 16 * 1024, 128 * 1024 };
-int sysctl_tcp_rmem[3] = { 4 * 1024, 87380, 87380 * 2 };
+int sysctl_tcp_mem[3] __read_mostly;
+int sysctl_tcp_wmem[3] __read_mostly;
+int sysctl_tcp_rmem[3] __read_mostly;
 
 EXPORT_SYMBOL(sysctl_tcp_mem);
 EXPORT_SYMBOL(sysctl_tcp_rmem);
@@ -2081,7 +2082,8 @@ __setup("thash_entries=", set_thash_entries);
 void __init tcp_init(void)
 {
 	struct sk_buff *skb = NULL;
-	int order, i;
+	unsigned long limit;
+	int order, i, max_share;
 
 	if (sizeof(struct tcp_skb_cb) > sizeof(skb->cb))
 		__skb_cb_too_small_for_tcp(sizeof(struct tcp_skb_cb),
@@ -2155,12 +2157,16 @@ void __init tcp_init(void)
 	sysctl_tcp_mem[1] = 1024 << order;
 	sysctl_tcp_mem[2] = 1536 << order;
 
-	if (order < 3) {
-		sysctl_tcp_wmem[2] = 64 * 1024;
-		sysctl_tcp_rmem[0] = PAGE_SIZE;
-		sysctl_tcp_rmem[1] = 43689;
-		sysctl_tcp_rmem[2] = 2 * 43689;
-	}
+	limit = ((unsigned long)sysctl_tcp_mem[1]) << (PAGE_SHIFT - 7);
+	max_share = min(4UL*1024*1024, limit);
+
+	sysctl_tcp_wmem[0] = SK_STREAM_MEM_QUANTUM;
+	sysctl_tcp_wmem[1] = 16*1024;
+	sysctl_tcp_wmem[2] = max(64*1024, max_share);
+
+	sysctl_tcp_rmem[0] = SK_STREAM_MEM_QUANTUM;
+	sysctl_tcp_rmem[1] = 87380;
+	sysctl_tcp_rmem[2] = max(87380, max_share);
 
 	printk(KERN_INFO "TCP: Hash tables configured "
 	       "(established %d bind %d)\n",