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authorDavid S. Miller <davem@davemloft.net>2017-09-04 03:08:42 +0300
committerDavid S. Miller <davem@davemloft.net>2017-09-04 03:08:42 +0300
commitb63f6044d8e43e4a1eef8b0a2310cec872fd1d38 (patch)
treed7d91953b9037b2f8eaf2e160aec6166bb38ba8b /net/bridge
parent942e7e5fc1ea4625d971e62f00b5ae3d2f8855de (diff)
parent1aff64715edb8565e99337b842d814d636641b50 (diff)
downloadlinux-b63f6044d8e43e4a1eef8b0a2310cec872fd1d38.tar.xz
Merge git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf-next
Pablo Neira Ayuso says: ==================== Netfilter updates for net-next The following patchset contains Netfilter updates for your net-next tree. Basically, updates to the conntrack core, enhancements for nf_tables, conversion of netfilter hooks from linked list to array to improve memory locality and asorted improvements for the Netfilter codebase. More specifically, they are: 1) Add expection to hashes after timer initialization to prevent access from another CPU that walks on the hashes and calls del_timer(), from Florian Westphal. 2) Don't update nf_tables chain counters from hot path, this is only used by the x_tables compatibility layer. 3) Get rid of nested rcu_read_lock() calls from netfilter hook path. Hooks are always guaranteed to run from rcu read side, so remove nested rcu_read_lock() where possible. Patch from Taehee Yoo. 4) nf_tables new ruleset generation notifications include PID and name of the process that has updated the ruleset, from Phil Sutter. 5) Use skb_header_pointer() from nft_fib, so we can reuse this code from the nf_family netdev family. Patch from Pablo M. Bermudo. 6) Add support for nft_fib in nf_tables netdev family, also from Pablo. 7) Use deferrable workqueue for conntrack garbage collection, to reduce power consumption, from Patch from Subash Abhinov Kasiviswanathan. 8) Add nf_ct_expect_iterate_net() helper and use it. From Florian Westphal. 9) Call nf_ct_unconfirmed_destroy only from cttimeout, from Florian. 10) Drop references on conntrack removal path when skbuffs has escaped via nfqueue, from Florian. 11) Don't queue packets to nfqueue with dying conntrack, from Florian. 12) Constify nf_hook_ops structure, from Florian. 13) Remove neededlessly branch in nf_tables trace code, from Phil Sutter. 14) Add nla_strdup(), from Phil Sutter. 15) Rise nf_tables objects name size up to 255 chars, people want to use DNS names, so increase this according to what RFC 1035 specifies. Patch series from Phil Sutter. 16) Kill nf_conntrack_default_on, it's broken. Default on conntrack hook registration on demand, suggested by Eric Dumazet, patch from Florian. 17) Remove unused variables in compat_copy_entry_from_user both in ip_tables and arp_tables code. Patch from Taehee Yoo. 18) Constify struct nf_conntrack_l4proto, from Julia Lawall. 19) Constify nf_loginfo structure, also from Julia. 20) Use a single rb root in connlimit, from Taehee Yoo. 21) Remove unused netfilter_queue_init() prototype, from Taehee Yoo. 22) Use audit_log() instead of open-coding it, from Geliang Tang. 23) Allow to mangle tcp options via nft_exthdr, from Florian. 24) Allow to fetch TCP MSS from nft_rt, from Florian. This includes a fix for a miscalculation of the minimal length. 25) Simplify branch logic in h323 helper, from Nick Desaulniers. 26) Calculate netlink attribute size for conntrack tuple at compile time, from Florian. 27) Remove protocol name field from nf_conntrack_{l3,l4}proto structure. From Florian. 28) Remove holes in nf_conntrack_l4proto structure, so it becomes smaller. From Florian. 29) Get rid of print_tuple() indirection for /proc conntrack listing. Place all the code in net/netfilter/nf_conntrack_standalone.c. Patch from Florian. 30) Do not built in print_conntrack() if CONFIG_NF_CONNTRACK_PROCFS is off. From Florian. 31) Constify most nf_conntrack_{l3,l4}proto helper functions, from Florian. 32) Fix broken indentation in ebtables extensions, from Colin Ian King. 33) Fix several harmless sparse warning, from Florian. 34) Convert netfilter hook infrastructure to use array for better memory locality, joint work done by Florian and Aaron Conole. Moreover, add some instrumentation to debug this. 35) Batch nf_unregister_net_hooks() calls, to call synchronize_net once per batch, from Florian. 36) Get rid of noisy logging in ICMPv6 conntrack helper, from Florian. 37) Get rid of obsolete NFDEBUG() instrumentation, from Varsha Rao. 38) Remove unused code in the generic protocol tracker, from Davide Caratti. I think I will have material for a second Netfilter batch in my queue if time allow to make it fit in this merge window. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/bridge')
-rw-r--r--net/bridge/br_netfilter_hooks.c21
-rw-r--r--net/bridge/netfilter/ebt_ip.c4
-rw-r--r--net/bridge/netfilter/ebt_ip6.c2
-rw-r--r--net/bridge/netfilter/ebtable_filter.c2
-rw-r--r--net/bridge/netfilter/ebtable_nat.c2
-rw-r--r--net/bridge/netfilter/ebtables.c13
6 files changed, 21 insertions, 23 deletions
diff --git a/net/bridge/br_netfilter_hooks.c b/net/bridge/br_netfilter_hooks.c
index 2261e5194c82..c2eea1b8737a 100644
--- a/net/bridge/br_netfilter_hooks.c
+++ b/net/bridge/br_netfilter_hooks.c
@@ -887,7 +887,7 @@ EXPORT_SYMBOL_GPL(br_netfilter_enable);
/* For br_nf_post_routing, we need (prio = NF_BR_PRI_LAST), because
* br_dev_queue_push_xmit is called afterwards */
-static struct nf_hook_ops br_nf_ops[] __read_mostly = {
+static const struct nf_hook_ops br_nf_ops[] = {
{
.hook = br_nf_pre_routing,
.pf = NFPROTO_BRIDGE,
@@ -985,22 +985,25 @@ int br_nf_hook_thresh(unsigned int hook, struct net *net,
int (*okfn)(struct net *, struct sock *,
struct sk_buff *))
{
- struct nf_hook_entry *elem;
+ const struct nf_hook_entries *e;
struct nf_hook_state state;
+ struct nf_hook_ops **ops;
+ unsigned int i;
int ret;
- for (elem = rcu_dereference(net->nf.hooks[NFPROTO_BRIDGE][hook]);
- elem && nf_hook_entry_priority(elem) <= NF_BR_PRI_BRNF;
- elem = rcu_dereference(elem->next))
- ;
-
- if (!elem)
+ e = rcu_dereference(net->nf.hooks[NFPROTO_BRIDGE][hook]);
+ if (!e)
return okfn(net, sk, skb);
+ ops = nf_hook_entries_get_hook_ops(e);
+ for (i = 0; i < e->num_hook_entries &&
+ ops[i]->priority <= NF_BR_PRI_BRNF; i++)
+ ;
+
nf_hook_state_init(&state, hook, NFPROTO_BRIDGE, indev, outdev,
sk, net, okfn);
- ret = nf_hook_slow(skb, &state, elem);
+ ret = nf_hook_slow(skb, &state, e, i);
if (ret == 1)
ret = okfn(net, sk, skb);
diff --git a/net/bridge/netfilter/ebt_ip.c b/net/bridge/netfilter/ebt_ip.c
index d06968bdf5ec..2b46c50abce0 100644
--- a/net/bridge/netfilter/ebt_ip.c
+++ b/net/bridge/netfilter/ebt_ip.c
@@ -64,14 +64,14 @@ ebt_ip_mt(const struct sk_buff *skb, struct xt_action_param *par)
if (NF_INVF(info, EBT_IP_DPORT,
dst < info->dport[0] ||
dst > info->dport[1]))
- return false;
+ return false;
}
if (info->bitmask & EBT_IP_SPORT) {
u32 src = ntohs(pptr->src);
if (NF_INVF(info, EBT_IP_SPORT,
src < info->sport[0] ||
src > info->sport[1]))
- return false;
+ return false;
}
}
return true;
diff --git a/net/bridge/netfilter/ebt_ip6.c b/net/bridge/netfilter/ebt_ip6.c
index 4617491be41e..2a5a52a53ec4 100644
--- a/net/bridge/netfilter/ebt_ip6.c
+++ b/net/bridge/netfilter/ebt_ip6.c
@@ -89,7 +89,7 @@ ebt_ip6_mt(const struct sk_buff *skb, struct xt_action_param *par)
if (NF_INVF(info, EBT_IP6_SPORT,
src < info->sport[0] ||
src > info->sport[1]))
- return false;
+ return false;
}
if ((info->bitmask & EBT_IP6_ICMP6) &&
NF_INVF(info, EBT_IP6_ICMP6,
diff --git a/net/bridge/netfilter/ebtable_filter.c b/net/bridge/netfilter/ebtable_filter.c
index f22ef7c21913..45a00dbdbcad 100644
--- a/net/bridge/netfilter/ebtable_filter.c
+++ b/net/bridge/netfilter/ebtable_filter.c
@@ -70,7 +70,7 @@ ebt_out_hook(void *priv, struct sk_buff *skb,
return ebt_do_table(skb, state, state->net->xt.frame_filter);
}
-static struct nf_hook_ops ebt_ops_filter[] __read_mostly = {
+static const struct nf_hook_ops ebt_ops_filter[] = {
{
.hook = ebt_in_hook,
.pf = NFPROTO_BRIDGE,
diff --git a/net/bridge/netfilter/ebtable_nat.c b/net/bridge/netfilter/ebtable_nat.c
index 30dedcb56ade..57cd5bb154e7 100644
--- a/net/bridge/netfilter/ebtable_nat.c
+++ b/net/bridge/netfilter/ebtable_nat.c
@@ -70,7 +70,7 @@ ebt_nat_out(void *priv, struct sk_buff *skb,
return ebt_do_table(skb, state, state->net->xt.frame_nat);
}
-static struct nf_hook_ops ebt_ops_nat[] __read_mostly = {
+static const struct nf_hook_ops ebt_ops_nat[] = {
{
.hook = ebt_nat_out,
.pf = NFPROTO_BRIDGE,
diff --git a/net/bridge/netfilter/ebtables.c b/net/bridge/netfilter/ebtables.c
index 9c6e619f452b..54c7ef4e970e 100644
--- a/net/bridge/netfilter/ebtables.c
+++ b/net/bridge/netfilter/ebtables.c
@@ -1069,15 +1069,10 @@ static int do_replace_finish(struct net *net, struct ebt_replace *repl,
#ifdef CONFIG_AUDIT
if (audit_enabled) {
- struct audit_buffer *ab;
-
- ab = audit_log_start(current->audit_context, GFP_KERNEL,
- AUDIT_NETFILTER_CFG);
- if (ab) {
- audit_log_format(ab, "table=%s family=%u entries=%u",
- repl->name, AF_BRIDGE, repl->nentries);
- audit_log_end(ab);
- }
+ audit_log(current->audit_context, GFP_KERNEL,
+ AUDIT_NETFILTER_CFG,
+ "table=%s family=%u entries=%u",
+ repl->name, AF_BRIDGE, repl->nentries);
}
#endif
return ret;