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

Pull networking updates from David Miller:

 1) Add TX fast path in mac80211, from Johannes Berg.

 2) Add TSO/GRO support to ibmveth, from Thomas Falcon

 3) Move away from cached routes in ipv6, just like ipv4, from Martin
    KaFai Lau.

 4) Lots of new rhashtable tests, from Thomas Graf.

 5) Run ingress qdisc lockless, from Alexei Starovoitov.

 6) Allow servers to fetch TCP packet headers for SYN packets of new
    connections, for fingerprinting.  From Eric Dumazet.

 7) Add mode parameter to pktgen, for testing receive.  From Alexei
    Starovoitov.

 8) Cache access optimizations via simplifications of build_skb(), from
    Alexander Duyck.

 9) Move page frag allocator under mm/, also from Alexander.

10) Add xmit_more support to hv_netvsc, from KY Srinivasan.

11) Add a counter guard in case we try to perform endless reclassify
    loops in the packet scheduler.

12) Extern flow dissector to be programmable and use it in new "Flower"
    classifier.  From Jiri Pirko.

13) AF_PACKET fanout rollover fixes, performance improvements, and new
    statistics.  From Willem de Bruijn.

14) Add netdev driver for GENEVE tunnels, from John W Linville.

15) Add ingress netfilter hooks and filtering, from Pablo Neira Ayuso.

16) Fix handling of epoll edge triggers in TCP, from Eric Dumazet.

17) Add an ECN retry fallback for the initial TCP handshake, from Daniel
    Borkmann.

18) Add tail call support to BPF, from Alexei Starovoitov.

19) Add several pktgen helper scripts, from Jesper Dangaard Brouer.

20) Add zerocopy support to AF_UNIX, from Hannes Frederic Sowa.

21) Favor even port numbers for allocation to connect() requests, and
    odd port numbers for bind(0), in an effort to help avoid
    ip_local_port_range exhaustion.  From Eric Dumazet.

22) Add Cavium ThunderX driver, from Sunil Goutham.

23) Allow bpf programs to access skb_iif and dev->ifindex SKB metadata,
    from Alexei Starovoitov.

24) Add support for T6 chips in cxgb4vf driver, from Hariprasad Shenai.

25) Double TCP Small Queues default to 256K to accomodate situations
    like the XEN driver and wireless aggregation.  From Wei Liu.

26) Add more entropy inputs to flow dissector, from Tom Herbert.

27) Add CDG congestion control algorithm to TCP, from Kenneth Klette
    Jonassen.

28) Convert ipset over to RCU locking, from Jozsef Kadlecsik.

29) Track and act upon link status of ipv4 route nexthops, from Andy
    Gospodarek.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1670 commits)
  bridge: vlan: flush the dynamically learned entries on port vlan delete
  bridge: multicast: add a comment to br_port_state_selection about blocking state
  net: inet_diag: export IPV6_V6ONLY sockopt
  stmmac: troubleshoot unexpected bits in des0 & des1
  net: ipv4 sysctl option to ignore routes when nexthop link is down
  net: track link-status of ipv4 nexthops
  net: switchdev: ignore unsupported bridge flags
  net: Cavium: Fix MAC address setting in shutdown state
  drivers: net: xgene: fix for ACPI support without ACPI
  ip: report the original address of ICMP messages
  net/mlx5e: Prefetch skb data on RX
  net/mlx5e: Pop cq outside mlx5e_get_cqe
  net/mlx5e: Remove mlx5e_cq.sqrq back-pointer
  net/mlx5e: Remove extra spaces
  net/mlx5e: Avoid TX CQE generation if more xmit packets expected
  net/mlx5e: Avoid redundant dev_kfree_skb() upon NOP completion
  net/mlx5e: Remove re-assignment of wq type in mlx5e_enable_rq()
  net/mlx5e: Use skb_shinfo(skb)->gso_segs rather than counting them
  net/mlx5e: Static mapping of netdev priv resources to/from netdev TX queues
  net/mlx4_en: Use HW counters for rx/tx bytes/packets in PF device
  ...

1 files changed, 43 insertions, 57 deletions

diff --git a/net/ipv6/netfilter/ip6_tables.c b/net/ipv6/netfilter/ip6_tables.c
index 62f5b0d0bc9b..3c35ced39b42 100644
--- a/net/ipv6/netfilter/ip6_tables.c
+++ b/net/ipv6/netfilter/ip6_tables.c
@@ -283,15 +283,13 @@ static void trace_packet(const struct sk_buff *skb,
 			 const struct xt_table_info *private,
 			 const struct ip6t_entry *e)
 {
-	const void *table_base;
 	const struct ip6t_entry *root;
 	const char *hookname, *chainname, *comment;
 	const struct ip6t_entry *iter;
 	unsigned int rulenum = 0;
 	struct net *net = dev_net(in ? in : out);
 
-	table_base = private->entries[smp_processor_id()];
-	root = get_entry(table_base, private->hook_entry[hook]);
+	root = get_entry(private->entries, private->hook_entry[hook]);
 
 	hookname = chainname = hooknames[hook];
 	comment = comments[NF_IP6_TRACE_COMMENT_RULE];
@@ -357,7 +355,7 @@ ip6t_do_table(struct sk_buff *skb,
 	 */
 	smp_read_barrier_depends();
 	cpu        = smp_processor_id();
-	table_base = private->entries[cpu];
+	table_base = private->entries;
 	jumpstack  = (struct ip6t_entry **)private->jumpstack[cpu];
 	stackptr   = per_cpu_ptr(private->stackptr, cpu);
 	origptr    = *stackptr;
@@ -367,6 +365,7 @@ ip6t_do_table(struct sk_buff *skb,
 	do {
 		const struct xt_entry_target *t;
 		const struct xt_entry_match *ematch;
+		struct xt_counters *counter;
 
 		IP_NF_ASSERT(e);
 		acpar.thoff = 0;
@@ -384,7 +383,8 @@ ip6t_do_table(struct sk_buff *skb,
 				goto no_match;
 		}
 
-		ADD_COUNTER(e->counters, skb->len, 1);
+		counter = xt_get_this_cpu_counter(&e->counters);
+		ADD_COUNTER(*counter, skb->len, 1);
 
 		t = ip6t_get_target_c(e);
 		IP_NF_ASSERT(t->u.kernel.target);
@@ -679,6 +679,10 @@ find_check_entry(struct ip6t_entry *e, struct net *net, const char *name,
 	if (ret)
 		return ret;
 
+	e->counters.pcnt = xt_percpu_counter_alloc();
+	if (IS_ERR_VALUE(e->counters.pcnt))
+		return -ENOMEM;
+
 	j = 0;
 	mtpar.net	= net;
 	mtpar.table     = name;
@@ -714,6 +718,9 @@ find_check_entry(struct ip6t_entry *e, struct net *net, const char *name,
 			break;
 		cleanup_match(ematch, net);
 	}
+
+	xt_percpu_counter_free(e->counters.pcnt);
+
 	return ret;
 }
 
@@ -797,6 +804,8 @@ static void cleanup_entry(struct ip6t_entry *e, struct net *net)
 	if (par.target->destroy != NULL)
 		par.target->destroy(&par);
 	module_put(par.target->me);
+
+	xt_percpu_counter_free(e->counters.pcnt);
 }
 
 /* Checks and translates the user-supplied table segment (held in
@@ -879,12 +888,6 @@ translate_table(struct net *net, struct xt_table_info *newinfo, void *entry0,
 		return ret;
 	}
 
-	/* And one copy for every other CPU */
-	for_each_possible_cpu(i) {
-		if (newinfo->entries[i] && newinfo->entries[i] != entry0)
-			memcpy(newinfo->entries[i], entry0, newinfo->size);
-	}
-
 	return ret;
 }
 
@@ -900,14 +903,16 @@ get_counters(const struct xt_table_info *t,
 		seqcount_t *s = &per_cpu(xt_recseq, cpu);
 
 		i = 0;
-		xt_entry_foreach(iter, t->entries[cpu], t->size) {
+		xt_entry_foreach(iter, t->entries, t->size) {
+			struct xt_counters *tmp;
 			u64 bcnt, pcnt;
 			unsigned int start;
 
+			tmp = xt_get_per_cpu_counter(&iter->counters, cpu);
 			do {
 				start = read_seqcount_begin(s);
-				bcnt = iter->counters.bcnt;
-				pcnt = iter->counters.pcnt;
+				bcnt = tmp->bcnt;
+				pcnt = tmp->pcnt;
 			} while (read_seqcount_retry(s, start));
 
 			ADD_COUNTER(counters[i], bcnt, pcnt);
@@ -952,11 +957,7 @@ copy_entries_to_user(unsigned int total_size,
 	if (IS_ERR(counters))
 		return PTR_ERR(counters);
 
-	/* choose the copy that is on our node/cpu, ...
-	 * This choice is lazy (because current thread is
-	 * allowed to migrate to another cpu)
-	 */
-	loc_cpu_entry = private->entries[raw_smp_processor_id()];
+	loc_cpu_entry = private->entries;
 	if (copy_to_user(userptr, loc_cpu_entry, total_size) != 0) {
 		ret = -EFAULT;
 		goto free_counters;
@@ -1064,16 +1065,16 @@ static int compat_table_info(const struct xt_table_info *info,
 			     struct xt_table_info *newinfo)
 {
 	struct ip6t_entry *iter;
-	void *loc_cpu_entry;
+	const void *loc_cpu_entry;
 	int ret;
 
 	if (!newinfo || !info)
 		return -EINVAL;
 
-	/* we dont care about newinfo->entries[] */
+	/* we dont care about newinfo->entries */
 	memcpy(newinfo, info, offsetof(struct xt_table_info, entries));
 	newinfo->initial_entries = 0;
-	loc_cpu_entry = info->entries[raw_smp_processor_id()];
+	loc_cpu_entry = info->entries;
 	xt_compat_init_offsets(AF_INET6, info->number);
 	xt_entry_foreach(iter, loc_cpu_entry, info->size) {
 		ret = compat_calc_entry(iter, info, loc_cpu_entry, newinfo);
@@ -1194,7 +1195,6 @@ __do_replace(struct net *net, const char *name, unsigned int valid_hooks,
 	struct xt_table *t;
 	struct xt_table_info *oldinfo;
 	struct xt_counters *counters;
-	const void *loc_cpu_old_entry;
 	struct ip6t_entry *iter;
 
 	ret = 0;
@@ -1237,8 +1237,7 @@ __do_replace(struct net *net, const char *name, unsigned int valid_hooks,
 	get_counters(oldinfo, counters);
 
 	/* Decrease module usage counts and free resource */
-	loc_cpu_old_entry = oldinfo->entries[raw_smp_processor_id()];
-	xt_entry_foreach(iter, loc_cpu_old_entry, oldinfo->size)
+	xt_entry_foreach(iter, oldinfo->entries, oldinfo->size)
 		cleanup_entry(iter, net);
 
 	xt_free_table_info(oldinfo);
@@ -1284,8 +1283,7 @@ do_replace(struct net *net, const void __user *user, unsigned int len)
 	if (!newinfo)
 		return -ENOMEM;
 
-	/* choose the copy that is on our node/cpu */
-	loc_cpu_entry = newinfo->entries[raw_smp_processor_id()];
+	loc_cpu_entry = newinfo->entries;
 	if (copy_from_user(loc_cpu_entry, user + sizeof(tmp),
 			   tmp.size) != 0) {
 		ret = -EFAULT;
@@ -1316,7 +1314,7 @@ static int
 do_add_counters(struct net *net, const void __user *user, unsigned int len,
 		int compat)
 {
-	unsigned int i, curcpu;
+	unsigned int i;
 	struct xt_counters_info tmp;
 	struct xt_counters *paddc;
 	unsigned int num_counters;
@@ -1326,7 +1324,6 @@ do_add_counters(struct net *net, const void __user *user, unsigned int len,
 	struct xt_table *t;
 	const struct xt_table_info *private;
 	int ret = 0;
-	const void *loc_cpu_entry;
 	struct ip6t_entry *iter;
 	unsigned int addend;
 #ifdef CONFIG_COMPAT
@@ -1374,7 +1371,6 @@ do_add_counters(struct net *net, const void __user *user, unsigned int len,
 		goto free;
 	}
 
-
 	local_bh_disable();
 	private = t->private;
 	if (private->number != num_counters) {
@@ -1383,16 +1379,15 @@ do_add_counters(struct net *net, const void __user *user, unsigned int len,
 	}
 
 	i = 0;
-	/* Choose the copy that is on our node */
-	curcpu = smp_processor_id();
 	addend = xt_write_recseq_begin();
-	loc_cpu_entry = private->entries[curcpu];
-	xt_entry_foreach(iter, loc_cpu_entry, private->size) {
-		ADD_COUNTER(iter->counters, paddc[i].bcnt, paddc[i].pcnt);
+	xt_entry_foreach(iter, private->entries, private->size) {
+		struct xt_counters *tmp;
+
+		tmp = xt_get_this_cpu_counter(&iter->counters);
+		ADD_COUNTER(*tmp, paddc[i].bcnt, paddc[i].pcnt);
 		++i;
 	}
 	xt_write_recseq_end(addend);
-
  unlock_up_free:
 	local_bh_enable();
 	xt_table_unlock(t);
@@ -1459,7 +1454,6 @@ static int
 compat_find_calc_match(struct xt_entry_match *m,
 		       const char *name,
 		       const struct ip6t_ip6 *ipv6,
-		       unsigned int hookmask,
 		       int *size)
 {
 	struct xt_match *match;
@@ -1528,8 +1522,7 @@ check_compat_entry_size_and_hooks(struct compat_ip6t_entry *e,
 	entry_offset = (void *)e - (void *)base;
 	j = 0;
 	xt_ematch_foreach(ematch, e) {
-		ret = compat_find_calc_match(ematch, name,
-					     &e->ipv6, e->comefrom, &off);
+		ret = compat_find_calc_match(ematch, name, &e->ipv6, &off);
 		if (ret != 0)
 			goto release_matches;
 		++j;
@@ -1623,6 +1616,9 @@ static int compat_check_entry(struct ip6t_entry *e, struct net *net,
 	struct xt_mtchk_param mtpar;
 	struct xt_entry_match *ematch;
 
+	e->counters.pcnt = xt_percpu_counter_alloc();
+	if (IS_ERR_VALUE(e->counters.pcnt))
+		return -ENOMEM;
 	j = 0;
 	mtpar.net	= net;
 	mtpar.table     = name;
@@ -1647,6 +1643,9 @@ static int compat_check_entry(struct ip6t_entry *e, struct net *net,
 			break;
 		cleanup_match(ematch, net);
 	}
+
+	xt_percpu_counter_free(e->counters.pcnt);
+
 	return ret;
 }
 
@@ -1731,7 +1730,7 @@ translate_compat_table(struct net *net,
 		newinfo->hook_entry[i] = info->hook_entry[i];
 		newinfo->underflow[i] = info->underflow[i];
 	}
-	entry1 = newinfo->entries[raw_smp_processor_id()];
+	entry1 = newinfo->entries;
 	pos = entry1;
 	size = total_size;
 	xt_entry_foreach(iter0, entry0, total_size) {
@@ -1783,11 +1782,6 @@ translate_compat_table(struct net *net,
 		return ret;
 	}
 
-	/* And one copy for every other CPU */
-	for_each_possible_cpu(i)
-		if (newinfo->entries[i] && newinfo->entries[i] != entry1)
-			memcpy(newinfo->entries[i], entry1, newinfo->size);
-
 	*pinfo = newinfo;
 	*pentry0 = entry1;
 	xt_free_table_info(info);
@@ -1834,8 +1828,7 @@ compat_do_replace(struct net *net, void __user *user, unsigned int len)
 	if (!newinfo)
 		return -ENOMEM;
 
-	/* choose the copy that is on our node/cpu */
-	loc_cpu_entry = newinfo->entries[raw_smp_processor_id()];
+	loc_cpu_entry = newinfo->entries;
 	if (copy_from_user(loc_cpu_entry, user + sizeof(tmp),
 			   tmp.size) != 0) {
 		ret = -EFAULT;
@@ -1906,7 +1899,6 @@ compat_copy_entries_to_user(unsigned int total_size, struct xt_table *table,
 	void __user *pos;
 	unsigned int size;
 	int ret = 0;
-	const void *loc_cpu_entry;
 	unsigned int i = 0;
 	struct ip6t_entry *iter;
 
@@ -1914,14 +1906,9 @@ compat_copy_entries_to_user(unsigned int total_size, struct xt_table *table,
 	if (IS_ERR(counters))
 		return PTR_ERR(counters);
 
-	/* choose the copy that is on our node/cpu, ...
-	 * This choice is lazy (because current thread is
-	 * allowed to migrate to another cpu)
-	 */
-	loc_cpu_entry = private->entries[raw_smp_processor_id()];
 	pos = userptr;
 	size = total_size;
-	xt_entry_foreach(iter, loc_cpu_entry, total_size) {
+	xt_entry_foreach(iter, private->entries, total_size) {
 		ret = compat_copy_entry_to_user(iter, &pos,
 						&size, counters, i++);
 		if (ret != 0)
@@ -2096,8 +2083,7 @@ struct xt_table *ip6t_register_table(struct net *net,
 		goto out;
 	}
 
-	/* choose the copy on our node/cpu, but dont care about preemption */
-	loc_cpu_entry = newinfo->entries[raw_smp_processor_id()];
+	loc_cpu_entry = newinfo->entries;
 	memcpy(loc_cpu_entry, repl->entries, repl->size);
 
 	ret = translate_table(net, newinfo, loc_cpu_entry, repl);
@@ -2127,7 +2113,7 @@ void ip6t_unregister_table(struct net *net, struct xt_table *table)
 	private = xt_unregister_table(table);
 
 	/* Decrease module usage counts and free resources */
-	loc_cpu_entry = private->entries[raw_smp_processor_id()];
+	loc_cpu_entry = private->entries;
 	xt_entry_foreach(iter, loc_cpu_entry, private->size)
 		cleanup_entry(iter, net);
 	if (private->number > private->initial_entries)