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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
commit | 2c3c1048746a4622d8c89a29670120dc8fab93c4 (patch) | |
tree | 848558de17fb3008cdf4d861b01ac7781903ce39 /net/netfilter/nft_fib_netdev.c | |
parent | Initial commit. (diff) | |
download | linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.tar.xz linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.zip |
Adding upstream version 6.1.76.upstream/6.1.76
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'net/netfilter/nft_fib_netdev.c')
-rw-r--r-- | net/netfilter/nft_fib_netdev.c | 89 |
1 files changed, 89 insertions, 0 deletions
diff --git a/net/netfilter/nft_fib_netdev.c b/net/netfilter/nft_fib_netdev.c new file mode 100644 index 000000000..9121ec64e --- /dev/null +++ b/net/netfilter/nft_fib_netdev.c @@ -0,0 +1,89 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright (c) 2017 Pablo M. Bermudo Garay <pablombg@gmail.com> + * + * This code is based on net/netfilter/nft_fib_inet.c, written by + * Florian Westphal <fw@strlen.de>. + */ + +#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_core.h> +#include <net/netfilter/nf_tables.h> +#include <net/ipv6.h> + +#include <net/netfilter/nft_fib.h> + +static void nft_fib_netdev_eval(const struct nft_expr *expr, + struct nft_regs *regs, + const struct nft_pktinfo *pkt) +{ + const struct nft_fib *priv = nft_expr_priv(expr); + + switch (ntohs(pkt->skb->protocol)) { + case ETH_P_IP: + switch (priv->result) { + case NFT_FIB_RESULT_OIF: + case NFT_FIB_RESULT_OIFNAME: + return nft_fib4_eval(expr, regs, pkt); + case NFT_FIB_RESULT_ADDRTYPE: + return nft_fib4_eval_type(expr, regs, pkt); + } + break; + case ETH_P_IPV6: + if (!ipv6_mod_enabled()) + break; + switch (priv->result) { + case NFT_FIB_RESULT_OIF: + case NFT_FIB_RESULT_OIFNAME: + return nft_fib6_eval(expr, regs, pkt); + case NFT_FIB_RESULT_ADDRTYPE: + return nft_fib6_eval_type(expr, regs, pkt); + } + break; + } + + regs->verdict.code = NFT_BREAK; +} + +static struct nft_expr_type nft_fib_netdev_type; +static const struct nft_expr_ops nft_fib_netdev_ops = { + .type = &nft_fib_netdev_type, + .size = NFT_EXPR_SIZE(sizeof(struct nft_fib)), + .eval = nft_fib_netdev_eval, + .init = nft_fib_init, + .dump = nft_fib_dump, + .validate = nft_fib_validate, + .reduce = nft_fib_reduce, +}; + +static struct nft_expr_type nft_fib_netdev_type __read_mostly = { + .family = NFPROTO_NETDEV, + .name = "fib", + .ops = &nft_fib_netdev_ops, + .policy = nft_fib_policy, + .maxattr = NFTA_FIB_MAX, + .owner = THIS_MODULE, +}; + +static int __init nft_fib_netdev_module_init(void) +{ + return nft_register_expr(&nft_fib_netdev_type); +} + +static void __exit nft_fib_netdev_module_exit(void) +{ + nft_unregister_expr(&nft_fib_netdev_type); +} + +module_init(nft_fib_netdev_module_init); +module_exit(nft_fib_netdev_module_exit); + +MODULE_LICENSE("GPL"); +MODULE_AUTHOR("Pablo M. Bermudo Garay <pablombg@gmail.com>"); +MODULE_ALIAS_NFT_AF_EXPR(5, "fib"); +MODULE_DESCRIPTION("nftables netdev fib lookups support"); |