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author | David S. Miller <davem@davemloft.net> | 2016-07-06 09:15:15 -0700 |
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committer | David S. Miller <davem@davemloft.net> | 2016-07-06 09:15:15 -0700 |
commit | ae3e4562e2ce0149a4424c994a282955700711e7 (patch) | |
tree | af7f75611e30d8502c2f3eee9f1f9e1aaa9f6534 /net/netfilter/nf_conntrack_standalone.c | |
parent | 73e20b761acf8678de2d55d92b90a623b8558a77 (diff) | |
parent | c6ac37d8d8843fb1fdc34e4a2a41a4f027ab670c (diff) | |
download | linux-stable-ae3e4562e2ce0149a4424c994a282955700711e7.tar.gz linux-stable-ae3e4562e2ce0149a4424c994a282955700711e7.tar.bz2 linux-stable-ae3e4562e2ce0149a4424c994a282955700711e7.zip |
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 net-next,
they are:
1) Don't use userspace datatypes in bridge netfilter code, from
Tobin Harding.
2) Iterate only once over the expectation table when removing the
helper module, instead of once per-netns, from Florian Westphal.
3) Extra sanitization in xt_hook_ops_alloc() to return error in case
we ever pass zero hooks, xt_hook_ops_alloc():
4) Handle NFPROTO_INET from the logging core infrastructure, from
Liping Zhang.
5) Autoload loggers when TRACE target is used from rules, this doesn't
change the behaviour in case the user already selected nfnetlink_log
as preferred way to print tracing logs, also from Liping Zhang.
6) Conntrack slabs with SLAB_HWCACHE_ALIGN to allow rearranging fields
by cache lines, increases the size of entries in 11% per entry.
From Florian Westphal.
7) Skip zone comparison if CONFIG_NF_CONNTRACK_ZONES=n, from Florian.
8) Remove useless defensive check in nf_logger_find_get() from Shivani
Bhardwaj.
9) Remove zone extension as place it in the conntrack object, this is
always include in the hashing and we expect more intensive use of
zones since containers are in place. Also from Florian Westphal.
10) Owner match now works from any namespace, from Eric Bierdeman.
11) Make sure we only reply with TCP reset to TCP traffic from
nf_reject_ipv4, patch from Liping Zhang.
12) Introduce --nflog-size to indicate amount of network packet bytes
that are copied to userspace via log message, from Vishwanath Pai.
This obsoletes --nflog-range that has never worked, it was designed
to achieve this but it has never worked.
13) Introduce generic macros for nf_tables object generation masks.
14) Use generation mask in table, chain and set objects in nf_tables.
This allows fixes interferences with ongoing preparation phase of
the commit protocol and object listings going on at the same time.
This update is introduced in three patches, one per object.
15) Check if the object is active in the next generation for element
deactivation in the rbtree implementation, given that deactivation
happens from the commit phase path we have to observe the future
status of the object.
16) Support for deletion of just added elements in the hash set type.
17) Allow to resize hashtable from /proc entry, not only from the
obscure /sys entry that maps to the module parameter, from Florian
Westphal.
18) Get rid of NFT_BASECHAIN_DISABLED, this code is not exercised
anymore since we tear down the ruleset whenever the netdevice
goes away.
19) Support for matching inverted set lookups, from Arturo Borrero.
20) Simplify the iptables_mangle_hook() by removing a superfluous
extra branch.
21) Introduce ether_addr_equal_masked() and use it from the netfilter
codebase, from Joe Perches.
22) Remove references to "Use netfilter MARK value as routing key"
from the Netfilter Kconfig description given that this toggle
doesn't exists already for 10 years, from Moritz Sichert.
23) Introduce generic NF_INVF() and use it from the xtables codebase,
from Joe Perches.
24) Setting logger to NONE via /proc was not working unless explicit
nul-termination was included in the string. This fixes seems to
leave the former behaviour there, so we don't break backward.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/netfilter/nf_conntrack_standalone.c')
-rw-r--r-- | net/netfilter/nf_conntrack_standalone.c | 36 |
1 files changed, 31 insertions, 5 deletions
diff --git a/net/netfilter/nf_conntrack_standalone.c b/net/netfilter/nf_conntrack_standalone.c index c026c472ea80..2aaa188ee961 100644 --- a/net/netfilter/nf_conntrack_standalone.c +++ b/net/netfilter/nf_conntrack_standalone.c @@ -434,8 +434,29 @@ static void nf_conntrack_standalone_fini_proc(struct net *net) #ifdef CONFIG_SYSCTL /* Log invalid packets of a given protocol */ -static int log_invalid_proto_min = 0; -static int log_invalid_proto_max = 255; +static int log_invalid_proto_min __read_mostly; +static int log_invalid_proto_max __read_mostly = 255; + +/* size the user *wants to set */ +static unsigned int nf_conntrack_htable_size_user __read_mostly; + +static int +nf_conntrack_hash_sysctl(struct ctl_table *table, int write, + void __user *buffer, size_t *lenp, loff_t *ppos) +{ + int ret; + + ret = proc_dointvec(table, write, buffer, lenp, ppos); + if (ret < 0 || !write) + return ret; + + /* update ret, we might not be able to satisfy request */ + ret = nf_conntrack_hash_resize(nf_conntrack_htable_size_user); + + /* update it to the actual value used by conntrack */ + nf_conntrack_htable_size_user = nf_conntrack_htable_size; + return ret; +} static struct ctl_table_header *nf_ct_netfilter_header; @@ -456,10 +477,10 @@ static struct ctl_table nf_ct_sysctl_table[] = { }, { .procname = "nf_conntrack_buckets", - .data = &nf_conntrack_htable_size, + .data = &nf_conntrack_htable_size_user, .maxlen = sizeof(unsigned int), - .mode = 0444, - .proc_handler = proc_dointvec, + .mode = 0644, + .proc_handler = nf_conntrack_hash_sysctl, }, { .procname = "nf_conntrack_checksum", @@ -515,6 +536,9 @@ static int nf_conntrack_standalone_init_sysctl(struct net *net) if (net->user_ns != &init_user_ns) table[0].procname = NULL; + if (!net_eq(&init_net, net)) + table[2].mode = 0444; + net->ct.sysctl_header = register_net_sysctl(net, "net/netfilter", table); if (!net->ct.sysctl_header) goto out_unregister_netfilter; @@ -604,6 +628,8 @@ static int __init nf_conntrack_standalone_init(void) ret = -ENOMEM; goto out_sysctl; } + + nf_conntrack_htable_size_user = nf_conntrack_htable_size; #endif ret = register_pernet_subsys(&nf_conntrack_net_ops); |