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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>
62 lines
1.4 KiB
C
62 lines
1.4 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/* Kernel module to match running CPU */
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/*
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* Might be used to distribute connections on several daemons, if
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* RPS (Remote Packet Steering) is enabled or NIC is multiqueue capable,
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* each RX queue IRQ affined to one CPU (1:1 mapping)
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*/
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/* (C) 2010 Eric Dumazet
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*/
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#include <linux/module.h>
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#include <linux/skbuff.h>
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#include <linux/netfilter/xt_cpu.h>
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#include <linux/netfilter/x_tables.h>
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MODULE_LICENSE("GPL");
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MODULE_AUTHOR("Eric Dumazet <eric.dumazet@gmail.com>");
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MODULE_DESCRIPTION("Xtables: CPU match");
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MODULE_ALIAS("ipt_cpu");
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MODULE_ALIAS("ip6t_cpu");
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static int cpu_mt_check(const struct xt_mtchk_param *par)
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{
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const struct xt_cpu_info *info = par->matchinfo;
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if (info->invert & ~1)
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return -EINVAL;
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return 0;
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}
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static bool cpu_mt(const struct sk_buff *skb, struct xt_action_param *par)
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{
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const struct xt_cpu_info *info = par->matchinfo;
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return (info->cpu == smp_processor_id()) ^ info->invert;
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}
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static struct xt_match cpu_mt_reg __read_mostly = {
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.name = "cpu",
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.revision = 0,
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.family = NFPROTO_UNSPEC,
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.checkentry = cpu_mt_check,
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.match = cpu_mt,
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.matchsize = sizeof(struct xt_cpu_info),
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.me = THIS_MODULE,
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};
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static int __init cpu_mt_init(void)
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{
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return xt_register_match(&cpu_mt_reg);
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}
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static void __exit cpu_mt_exit(void)
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{
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xt_unregister_match(&cpu_mt_reg);
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}
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module_init(cpu_mt_init);
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module_exit(cpu_mt_exit);
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