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net/netfilter/xt_cpu.c
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e8648a1fd netfilter: add xt... |
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/* Kernel module to match running CPU */ /* * Might be used to distribute connections on several daemons, if * RPS (Remote Packet Steering) is enabled or NIC is multiqueue capable, * each RX queue IRQ affined to one CPU (1:1 mapping) * */ /* (C) 2010 Eric Dumazet * * 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. */ #include <linux/module.h> #include <linux/skbuff.h> #include <linux/netfilter/xt_cpu.h> #include <linux/netfilter/x_tables.h> MODULE_LICENSE("GPL"); MODULE_AUTHOR("Eric Dumazet <eric.dumazet@gmail.com>"); MODULE_DESCRIPTION("Xtables: CPU match"); |
f1e231a35 netfilter: xtable... |
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MODULE_ALIAS("ipt_cpu"); MODULE_ALIAS("ip6t_cpu"); |
e8648a1fd netfilter: add xt... |
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static int cpu_mt_check(const struct xt_mtchk_param *par) { const struct xt_cpu_info *info = par->matchinfo; if (info->invert & ~1) return -EINVAL; return 0; } static bool cpu_mt(const struct sk_buff *skb, struct xt_action_param *par) { const struct xt_cpu_info *info = par->matchinfo; return (info->cpu == smp_processor_id()) ^ info->invert; } static struct xt_match cpu_mt_reg __read_mostly = { .name = "cpu", .revision = 0, .family = NFPROTO_UNSPEC, .checkentry = cpu_mt_check, .match = cpu_mt, .matchsize = sizeof(struct xt_cpu_info), .me = THIS_MODULE, }; static int __init cpu_mt_init(void) { return xt_register_match(&cpu_mt_reg); } static void __exit cpu_mt_exit(void) { xt_unregister_match(&cpu_mt_reg); } module_init(cpu_mt_init); module_exit(cpu_mt_exit); |