diff options
Diffstat (limited to 'net/ipv4')
-rw-r--r-- | net/ipv4/netfilter/nf_tables_arp.c | 44 | ||||
-rw-r--r-- | net/ipv4/netfilter/nf_tables_ipv4.c | 60 | ||||
-rw-r--r-- | net/ipv4/netfilter/nft_chain_nat_ipv4.c | 10 | ||||
-rw-r--r-- | net/ipv4/netfilter/nft_chain_route_ipv4.c | 10 |
4 files changed, 64 insertions, 60 deletions
diff --git a/net/ipv4/netfilter/nf_tables_arp.c b/net/ipv4/netfilter/nf_tables_arp.c index 3e67ef1..19412a4 100644 --- a/net/ipv4/netfilter/nf_tables_arp.c +++ b/net/ipv4/netfilter/nf_tables_arp.c @@ -14,10 +14,30 @@ #include <linux/netfilter_arp.h> #include <net/netfilter/nf_tables.h> +static unsigned int +nft_do_chain_arp(const struct nf_hook_ops *ops, + struct sk_buff *skb, + const struct net_device *in, + const struct net_device *out, + int (*okfn)(struct sk_buff *)) +{ + struct nft_pktinfo pkt; + + nft_set_pktinfo(&pkt, ops, skb, in, out); + + return nft_do_chain(&pkt, ops); +} + static struct nft_af_info nft_af_arp __read_mostly = { .family = NFPROTO_ARP, .nhooks = NF_ARP_NUMHOOKS, .owner = THIS_MODULE, + .nops = 1, + .hooks = { + [NF_ARP_IN] = nft_do_chain_arp, + [NF_ARP_OUT] = nft_do_chain_arp, + [NF_ARP_FORWARD] = nft_do_chain_arp, + }, }; static int nf_tables_arp_init_net(struct net *net) @@ -48,32 +68,14 @@ static struct pernet_operations nf_tables_arp_net_ops = { .exit = nf_tables_arp_exit_net, }; -static unsigned int -nft_do_chain_arp(const struct nf_hook_ops *ops, - struct sk_buff *skb, - const struct net_device *in, - const struct net_device *out, - int (*okfn)(struct sk_buff *)) -{ - struct nft_pktinfo pkt; - - nft_set_pktinfo(&pkt, ops, skb, in, out); - - return nft_do_chain_pktinfo(&pkt, ops); -} - -static struct nf_chain_type filter_arp = { - .family = NFPROTO_ARP, +static const struct nf_chain_type filter_arp = { .name = "filter", .type = NFT_CHAIN_T_DEFAULT, + .family = NFPROTO_ARP, + .owner = THIS_MODULE, .hook_mask = (1 << NF_ARP_IN) | (1 << NF_ARP_OUT) | (1 << NF_ARP_FORWARD), - .fn = { - [NF_ARP_IN] = nft_do_chain_arp, - [NF_ARP_OUT] = nft_do_chain_arp, - [NF_ARP_FORWARD] = nft_do_chain_arp, - }, }; static int __init nf_tables_arp_init(void) diff --git a/net/ipv4/netfilter/nf_tables_ipv4.c b/net/ipv4/netfilter/nf_tables_ipv4.c index 0f4cbfe..6820c8c 100644 --- a/net/ipv4/netfilter/nf_tables_ipv4.c +++ b/net/ipv4/netfilter/nf_tables_ipv4.c @@ -18,14 +18,25 @@ #include <net/ip.h> #include <net/netfilter/nf_tables_ipv4.h> +static unsigned int nft_do_chain_ipv4(const struct nf_hook_ops *ops, + struct sk_buff *skb, + const struct net_device *in, + const struct net_device *out, + int (*okfn)(struct sk_buff *)) +{ + struct nft_pktinfo pkt; + + nft_set_pktinfo_ipv4(&pkt, ops, skb, in, out); + + return nft_do_chain(&pkt, ops); +} + static unsigned int nft_ipv4_output(const struct nf_hook_ops *ops, struct sk_buff *skb, const struct net_device *in, const struct net_device *out, int (*okfn)(struct sk_buff *)) { - struct nft_pktinfo pkt; - if (unlikely(skb->len < sizeof(struct iphdr) || ip_hdr(skb)->ihl < sizeof(struct iphdr) / 4)) { if (net_ratelimit()) @@ -33,19 +44,24 @@ static unsigned int nft_ipv4_output(const struct nf_hook_ops *ops, "packet\n"); return NF_ACCEPT; } - nft_set_pktinfo_ipv4(&pkt, ops, skb, in, out); - return nft_do_chain_pktinfo(&pkt, ops); + return nft_do_chain_ipv4(ops, skb, in, out, okfn); } -static struct nft_af_info nft_af_ipv4 __read_mostly = { +struct nft_af_info nft_af_ipv4 __read_mostly = { .family = NFPROTO_IPV4, .nhooks = NF_INET_NUMHOOKS, .owner = THIS_MODULE, + .nops = 1, .hooks = { + [NF_INET_LOCAL_IN] = nft_do_chain_ipv4, [NF_INET_LOCAL_OUT] = nft_ipv4_output, + [NF_INET_FORWARD] = nft_do_chain_ipv4, + [NF_INET_PRE_ROUTING] = nft_do_chain_ipv4, + [NF_INET_POST_ROUTING] = nft_do_chain_ipv4, }, }; +EXPORT_SYMBOL_GPL(nft_af_ipv4); static int nf_tables_ipv4_init_net(struct net *net) { @@ -75,42 +91,28 @@ static struct pernet_operations nf_tables_ipv4_net_ops = { .exit = nf_tables_ipv4_exit_net, }; -static unsigned int -nft_do_chain_ipv4(const struct nf_hook_ops *ops, - struct sk_buff *skb, - const struct net_device *in, - const struct net_device *out, - int (*okfn)(struct sk_buff *)) -{ - struct nft_pktinfo pkt; - - nft_set_pktinfo_ipv4(&pkt, ops, skb, in, out); - - return nft_do_chain_pktinfo(&pkt, ops); -} - -static struct nf_chain_type filter_ipv4 = { - .family = NFPROTO_IPV4, +static const struct nf_chain_type filter_ipv4 = { .name = "filter", .type = NFT_CHAIN_T_DEFAULT, + .family = NFPROTO_IPV4, + .owner = THIS_MODULE, .hook_mask = (1 << NF_INET_LOCAL_IN) | (1 << NF_INET_LOCAL_OUT) | (1 << NF_INET_FORWARD) | (1 << NF_INET_PRE_ROUTING) | (1 << NF_INET_POST_ROUTING), - .fn = { - [NF_INET_LOCAL_IN] = nft_do_chain_ipv4, - [NF_INET_LOCAL_OUT] = nft_ipv4_output, - [NF_INET_FORWARD] = nft_do_chain_ipv4, - [NF_INET_PRE_ROUTING] = nft_do_chain_ipv4, - [NF_INET_POST_ROUTING] = nft_do_chain_ipv4, - }, }; static int __init nf_tables_ipv4_init(void) { + int ret; + nft_register_chain_type(&filter_ipv4); - return register_pernet_subsys(&nf_tables_ipv4_net_ops); + ret = register_pernet_subsys(&nf_tables_ipv4_net_ops); + if (ret < 0) + nft_unregister_chain_type(&filter_ipv4); + + return ret; } static void __exit nf_tables_ipv4_exit(void) diff --git a/net/ipv4/netfilter/nft_chain_nat_ipv4.c b/net/ipv4/netfilter/nft_chain_nat_ipv4.c index cf2c792..b5b256d 100644 --- a/net/ipv4/netfilter/nft_chain_nat_ipv4.c +++ b/net/ipv4/netfilter/nft_chain_nat_ipv4.c @@ -75,7 +75,7 @@ static unsigned int nf_nat_fn(const struct nf_hook_ops *ops, nft_set_pktinfo_ipv4(&pkt, ops, skb, in, out); - ret = nft_do_chain_pktinfo(&pkt, ops); + ret = nft_do_chain(&pkt, ops); if (ret != NF_ACCEPT) return ret; if (!nf_nat_initialized(ct, maniptype)) { @@ -164,21 +164,21 @@ static unsigned int nf_nat_output(const struct nf_hook_ops *ops, return ret; } -static struct nf_chain_type nft_chain_nat_ipv4 = { - .family = NFPROTO_IPV4, +static const struct nf_chain_type nft_chain_nat_ipv4 = { .name = "nat", .type = NFT_CHAIN_T_NAT, + .family = NFPROTO_IPV4, + .owner = THIS_MODULE, .hook_mask = (1 << NF_INET_PRE_ROUTING) | (1 << NF_INET_POST_ROUTING) | (1 << NF_INET_LOCAL_OUT) | (1 << NF_INET_LOCAL_IN), - .fn = { + .hooks = { [NF_INET_PRE_ROUTING] = nf_nat_prerouting, [NF_INET_POST_ROUTING] = nf_nat_postrouting, [NF_INET_LOCAL_OUT] = nf_nat_output, [NF_INET_LOCAL_IN] = nf_nat_fn, }, - .me = THIS_MODULE, }; static int __init nft_chain_nat_init(void) diff --git a/net/ipv4/netfilter/nft_chain_route_ipv4.c b/net/ipv4/netfilter/nft_chain_route_ipv4.c index 4e6bf9a..125b667 100644 --- a/net/ipv4/netfilter/nft_chain_route_ipv4.c +++ b/net/ipv4/netfilter/nft_chain_route_ipv4.c @@ -47,7 +47,7 @@ static unsigned int nf_route_table_hook(const struct nf_hook_ops *ops, daddr = iph->daddr; tos = iph->tos; - ret = nft_do_chain_pktinfo(&pkt, ops); + ret = nft_do_chain(&pkt, ops); if (ret != NF_DROP && ret != NF_QUEUE) { iph = ip_hdr(skb); @@ -61,15 +61,15 @@ static unsigned int nf_route_table_hook(const struct nf_hook_ops *ops, return ret; } -static struct nf_chain_type nft_chain_route_ipv4 = { - .family = NFPROTO_IPV4, +static const struct nf_chain_type nft_chain_route_ipv4 = { .name = "route", .type = NFT_CHAIN_T_ROUTE, + .family = NFPROTO_IPV4, + .owner = THIS_MODULE, .hook_mask = (1 << NF_INET_LOCAL_OUT), - .fn = { + .hooks = { [NF_INET_LOCAL_OUT] = nf_route_table_hook, }, - .me = THIS_MODULE, }; static int __init nft_chain_route_init(void) |