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2019-11-05icmp: remove duplicate codeMatteo Croce1-5/+1
The same code which recognizes ICMP error packets is duplicated several times. Use the icmp_is_err() and icmpv6_is_err() helpers instead, which do the same thing. ip_multipath_l3_keys() and tcf_nat_act() didn't check for all the error types, assume that they should instead. Signed-off-by: Matteo Croce <mcroce@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-06-19treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500Thomas Gleixner1-4/+1
Based on 2 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license version 2 as published by the free software foundation this program is free software you can redistribute it and or modify it under the terms of the gnu general public license version 2 as published by the free software foundation # extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 4122 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Enrico Weigelt <info@metux.net> Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Reviewed-by: Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190604081206.933168790@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-02-14netfilter: x_tables: use pr ratelimiting in matches/targetsFlorian Westphal1-6/+11
all of these print simple error message - use single pr_ratelimit call. checkpatch complains about lines > 80 but this would require splitting several "literals" over multiple lines which is worse. Signed-off-by: Florian Westphal <fw@strlen.de> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2018-02-14netfilter: x_tables: remove pr_info where possibleFlorian Westphal1-6/+4
remove several pr_info messages that cannot be triggered with iptables, the check is only to ensure input is sane. iptables(8) already prints error messages in these cases. Signed-off-by: Florian Westphal <fw@strlen.de> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2017-04-15netfilter: remove nf_ct_is_untrackedFlorian Westphal1-1/+1
This function is now obsolete and always returns false. This change has no effect on generated code. Signed-off-by: Florian Westphal <fw@strlen.de> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2014-08-23net: use reciprocal_scale() helperDaniel Borkmann1-1/+1
Replace open codings of (((u64) <x> * <y>) >> 32) with reciprocal_scale(). Signed-off-by: Daniel Borkmann <dborkman@redhat.com> Cc: Hannes Frederic Sowa <hannes@stressinduktion.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-11-09ipv6: Move ipv6_find_hdr() out of Netfilter code.Jesse Gross1-4/+4
Open vSwitch will soon also use ipv6_find_hdr() so this moves it out of Netfilter-specific code into a more common location. Signed-off-by: Jesse Gross <jesse@nicira.com>
2012-06-07netfilter: xt_HMARK: fix endianness and provide consistent hashingHans Schillstrom1-31/+41
This patch addresses two issues: a) Fix usage of u32 and __be32 that causes endianess warnings via sparse. b) Ensure consistent hashing in a cluster that is composed of big and little endian systems. Thus, we obtain the same hash mark in an heterogeneous cluster. Reported-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Hans Schillstrom <hans@schillstrom.com> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2012-05-17netfilter: xt_HMARK: modulus is expensive for hash calculationPablo Neira Ayuso1-1/+1
Use: ((u64)(HASH_VAL * HASH_SIZE)) >> 32 as suggested by David S. Miller. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2012-05-17netfilter: xt_HMARK: potential NULL dereference in get_inner_hdr()Dan Carpenter1-1/+1
There is a typo in the error checking and "&&" was used instead of "||". If skb_header_pointer() returns NULL then it leads to a NULL dereference. Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Acked-by: Hans Schillstrom <hans.schillstrom@ericsson.com> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2012-05-09netfilter: add xt_hmark target for hash-based skb markingHans Schillstrom1-0/+362
The target allows you to create rules in the "raw" and "mangle" tables which set the skbuff mark by means of hash calculation within a given range. The nfmark can influence the routing method (see "Use netfilter MARK value as routing key") and can also be used by other subsystems to change their behaviour. [ Part of this patch has been refactorized and modified by Pablo Neira Ayuso ] Signed-off-by: Hans Schillstrom <hans.schillstrom@ericsson.com> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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