cregit-Linux how code gets into the kernel

Release 4.11 net/ipv4/netfilter/nft_redir_ipv4.c

/*
 * Copyright (c) 2014 Arturo Borrero Gonzalez <arturo@debian.org>
 *
 * 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/kernel.h>
#include <linux/init.h>
#include <linux/module.h>
#include <linux/netlink.h>
#include <linux/netfilter.h>
#include <linux/netfilter/nf_tables.h>
#include <net/netfilter/nf_tables.h>
#include <net/netfilter/nf_nat.h>
#include <net/netfilter/nf_nat_redirect.h>
#include <net/netfilter/nft_redir.h>


static void nft_redir_ipv4_eval(const struct nft_expr *expr, struct nft_regs *regs, const struct nft_pktinfo *pkt) { struct nft_redir *priv = nft_expr_priv(expr); struct nf_nat_ipv4_multi_range_compat mr; memset(&mr, 0, sizeof(mr)); if (priv->sreg_proto_min) { mr.range[0].min.all = (__force __be16)nft_reg_load16( &regs->data[priv->sreg_proto_min]); mr.range[0].max.all = (__force __be16)nft_reg_load16( &regs->data[priv->sreg_proto_max]); mr.range[0].flags |= NF_NAT_RANGE_PROTO_SPECIFIED; } mr.range[0].flags |= priv->flags; regs->verdict.code = nf_nat_redirect_ipv4(pkt->skb, &mr, nft_hook(pkt)); }

Contributors

PersonTokensPropCommitsCommitProp
Arturo Borrero Gonzalez13584.91%120.00%
Patrick McHardy116.92%120.00%
Liping Zhang85.03%120.00%
Pablo Neira Ayuso31.89%120.00%
Christophe Leroy21.26%120.00%
Total159100.00%5100.00%


static void nft_redir_ipv4_destroy(const struct nft_ctx *ctx, const struct nft_expr *expr) { nf_ct_netns_put(ctx->net, NFPROTO_IPV4); }

Contributors

PersonTokensPropCommitsCommitProp
Florian Westphal27100.00%1100.00%
Total27100.00%1100.00%

static struct nft_expr_type nft_redir_ipv4_type; static const struct nft_expr_ops nft_redir_ipv4_ops = { .type = &nft_redir_ipv4_type, .size = NFT_EXPR_SIZE(sizeof(struct nft_redir)), .eval = nft_redir_ipv4_eval, .init = nft_redir_init, .destroy = nft_redir_ipv4_destroy, .dump = nft_redir_dump, .validate = nft_redir_validate, }; static struct nft_expr_type nft_redir_ipv4_type __read_mostly = { .family = NFPROTO_IPV4, .name = "redir", .ops = &nft_redir_ipv4_ops, .policy = nft_redir_policy, .maxattr = NFTA_REDIR_MAX, .owner = THIS_MODULE, };
static int __init nft_redir_ipv4_module_init(void) { return nft_register_expr(&nft_redir_ipv4_type); }

Contributors

PersonTokensPropCommitsCommitProp
Arturo Borrero Gonzalez16100.00%1100.00%
Total16100.00%1100.00%


static void __exit nft_redir_ipv4_module_exit(void) { nft_unregister_expr(&nft_redir_ipv4_type); }

Contributors

PersonTokensPropCommitsCommitProp
Arturo Borrero Gonzalez15100.00%1100.00%
Total15100.00%1100.00%

module_init(nft_redir_ipv4_module_init); module_exit(nft_redir_ipv4_module_exit); MODULE_LICENSE("GPL"); MODULE_AUTHOR("Arturo Borrero Gonzalez <arturo@debian.org>"); MODULE_ALIAS_NFT_AF_EXPR(AF_INET, "redir");

Overall Contributors

PersonTokensPropCommitsCommitProp
Arturo Borrero Gonzalez31384.59%225.00%
Florian Westphal328.65%112.50%
Patrick McHardy112.97%112.50%
Liping Zhang82.16%112.50%
Pablo Neira Ayuso41.08%225.00%
Christophe Leroy20.54%112.50%
Total370100.00%8100.00%
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