From bd2bbdb497dba24b9ca7f6257c83e496c64b6e9d Mon Sep 17 00:00:00 2001 From: Florian Westphal Date: Mon, 16 Apr 2018 19:15:53 +0200 Subject: netfilter: merge meta_bridge into nft_meta It overcomplicates things for no reason. nft_meta_bridge only offers retrieval of bridge port interface name. Because of this being its own module, we had to export all nft_meta functions, which we can then make static again (which even reduces the size of nft_meta -- including bridge port retrieval...): before: text data bss dec hex filename 1838 832 0 2670 a6e net/bridge/netfilter/nft_meta_bridge.ko 6147 936 1 7084 1bac net/netfilter/nft_meta.ko after: 5826 936 1 6763 1a6b net/netfilter/nft_meta.ko Signed-off-by: Florian Westphal Signed-off-by: Pablo Neira Ayuso --- net/bridge/netfilter/Kconfig | 7 -- net/bridge/netfilter/Makefile | 1 - net/bridge/netfilter/nft_meta_bridge.c | 135 --------------------------------- 3 files changed, 143 deletions(-) delete mode 100644 net/bridge/netfilter/nft_meta_bridge.c (limited to 'net/bridge/netfilter') diff --git a/net/bridge/netfilter/Kconfig b/net/bridge/netfilter/Kconfig index f212447794bd..9a0159aebe1a 100644 --- a/net/bridge/netfilter/Kconfig +++ b/net/bridge/netfilter/Kconfig @@ -8,13 +8,6 @@ menuconfig NF_TABLES_BRIDGE bool "Ethernet Bridge nf_tables support" if NF_TABLES_BRIDGE - -config NFT_BRIDGE_META - tristate "Netfilter nf_table bridge meta support" - depends on NFT_META - help - Add support for bridge dedicated meta key. - config NFT_BRIDGE_REJECT tristate "Netfilter nf_tables bridge reject support" depends on NFT_REJECT && NFT_REJECT_IPV4 && NFT_REJECT_IPV6 diff --git a/net/bridge/netfilter/Makefile b/net/bridge/netfilter/Makefile index 4bc758dd4a8c..9b868861f21a 100644 --- a/net/bridge/netfilter/Makefile +++ b/net/bridge/netfilter/Makefile @@ -3,7 +3,6 @@ # Makefile for the netfilter modules for Link Layer filtering on a bridge. # -obj-$(CONFIG_NFT_BRIDGE_META) += nft_meta_bridge.o obj-$(CONFIG_NFT_BRIDGE_REJECT) += nft_reject_bridge.o # packet logging diff --git a/net/bridge/netfilter/nft_meta_bridge.c b/net/bridge/netfilter/nft_meta_bridge.c deleted file mode 100644 index bb63c9aed55d..000000000000 --- a/net/bridge/netfilter/nft_meta_bridge.c +++ /dev/null @@ -1,135 +0,0 @@ -/* - * Copyright (c) 2014 Intel Corporation - * - * 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 -#include -#include -#include -#include -#include -#include -#include - -#include "../br_private.h" - -static void nft_meta_bridge_get_eval(const struct nft_expr *expr, - struct nft_regs *regs, - const struct nft_pktinfo *pkt) -{ - const struct nft_meta *priv = nft_expr_priv(expr); - const struct net_device *in = nft_in(pkt), *out = nft_out(pkt); - u32 *dest = ®s->data[priv->dreg]; - const struct net_bridge_port *p; - - switch (priv->key) { - case NFT_META_BRI_IIFNAME: - if (in == NULL || (p = br_port_get_rcu(in)) == NULL) - goto err; - break; - case NFT_META_BRI_OIFNAME: - if (out == NULL || (p = br_port_get_rcu(out)) == NULL) - goto err; - break; - default: - goto out; - } - - strncpy((char *)dest, p->br->dev->name, IFNAMSIZ); - return; -out: - return nft_meta_get_eval(expr, regs, pkt); -err: - regs->verdict.code = NFT_BREAK; -} - -static int nft_meta_bridge_get_init(const struct nft_ctx *ctx, - const struct nft_expr *expr, - const struct nlattr * const tb[]) -{ - struct nft_meta *priv = nft_expr_priv(expr); - unsigned int len; - - priv->key = ntohl(nla_get_be32(tb[NFTA_META_KEY])); - switch (priv->key) { - case NFT_META_BRI_IIFNAME: - case NFT_META_BRI_OIFNAME: - len = IFNAMSIZ; - break; - default: - return nft_meta_get_init(ctx, expr, tb); - } - - priv->dreg = nft_parse_register(tb[NFTA_META_DREG]); - return nft_validate_register_store(ctx, priv->dreg, NULL, - NFT_DATA_VALUE, len); -} - -static struct nft_expr_type nft_meta_bridge_type; -static const struct nft_expr_ops nft_meta_bridge_get_ops = { - .type = &nft_meta_bridge_type, - .size = NFT_EXPR_SIZE(sizeof(struct nft_meta)), - .eval = nft_meta_bridge_get_eval, - .init = nft_meta_bridge_get_init, - .dump = nft_meta_get_dump, -}; - -static const struct nft_expr_ops nft_meta_bridge_set_ops = { - .type = &nft_meta_bridge_type, - .size = NFT_EXPR_SIZE(sizeof(struct nft_meta)), - .eval = nft_meta_set_eval, - .init = nft_meta_set_init, - .destroy = nft_meta_set_destroy, - .dump = nft_meta_set_dump, - .validate = nft_meta_set_validate, -}; - -static const struct nft_expr_ops * -nft_meta_bridge_select_ops(const struct nft_ctx *ctx, - const struct nlattr * const tb[]) -{ - if (tb[NFTA_META_KEY] == NULL) - return ERR_PTR(-EINVAL); - - if (tb[NFTA_META_DREG] && tb[NFTA_META_SREG]) - return ERR_PTR(-EINVAL); - - if (tb[NFTA_META_DREG]) - return &nft_meta_bridge_get_ops; - - if (tb[NFTA_META_SREG]) - return &nft_meta_bridge_set_ops; - - return ERR_PTR(-EINVAL); -} - -static struct nft_expr_type nft_meta_bridge_type __read_mostly = { - .family = NFPROTO_BRIDGE, - .name = "meta", - .select_ops = nft_meta_bridge_select_ops, - .policy = nft_meta_policy, - .maxattr = NFTA_META_MAX, - .owner = THIS_MODULE, -}; - -static int __init nft_meta_bridge_module_init(void) -{ - return nft_register_expr(&nft_meta_bridge_type); -} - -static void __exit nft_meta_bridge_module_exit(void) -{ - nft_unregister_expr(&nft_meta_bridge_type); -} - -module_init(nft_meta_bridge_module_init); -module_exit(nft_meta_bridge_module_exit); - -MODULE_LICENSE("GPL"); -MODULE_AUTHOR("Tomasz Bursztyka "); -MODULE_ALIAS_NFT_AF_EXPR(AF_BRIDGE, "meta"); -- cgit v1.2.3