diff options
Diffstat (limited to 'include/net/netfilter')
-rw-r--r-- | include/net/netfilter/nf_tables.h | 44 | ||||
-rw-r--r-- | include/net/netfilter/nf_tables_ipv4.h | 23 | ||||
-rw-r--r-- | include/net/netfilter/nf_tables_ipv6.h | 30 |
3 files changed, 90 insertions, 7 deletions
diff --git a/include/net/netfilter/nf_tables.h b/include/net/netfilter/nf_tables.h index 8403f7f52e81..a68f45f0fe2e 100644 --- a/include/net/netfilter/nf_tables.h +++ b/include/net/netfilter/nf_tables.h @@ -3,6 +3,7 @@ #include <linux/list.h> #include <linux/netfilter.h> +#include <linux/netfilter/x_tables.h> #include <linux/netfilter/nf_tables.h> #include <net/netlink.h> @@ -15,8 +16,23 @@ struct nft_pktinfo { u8 hooknum; u8 nhoff; u8 thoff; + /* for x_tables compatibility */ + struct xt_action_param xt; }; +static inline void nft_set_pktinfo(struct nft_pktinfo *pkt, + const struct nf_hook_ops *ops, + struct sk_buff *skb, + const struct net_device *in, + const struct net_device *out) +{ + pkt->skb = skb; + pkt->in = pkt->xt.in = in; + pkt->out = pkt->xt.out = out; + pkt->hooknum = pkt->xt.hooknum = ops->hooknum; + pkt->xt.family = ops->pf; +} + struct nft_data { union { u32 data[4]; @@ -57,6 +73,7 @@ static inline void nft_data_debug(const struct nft_data *data) * @afi: address family info * @table: the table the chain is contained in * @chain: the chain the rule is contained in + * @nla: netlink attributes */ struct nft_ctx { const struct sk_buff *skb; @@ -64,6 +81,7 @@ struct nft_ctx { const struct nft_af_info *afi; const struct nft_table *table; const struct nft_chain *chain; + const struct nlattr * const *nla; }; struct nft_data_desc { @@ -235,7 +253,8 @@ extern void nf_tables_unbind_set(const struct nft_ctx *ctx, struct nft_set *set, * @maxattr: highest netlink attribute number */ struct nft_expr_type { - const struct nft_expr_ops *(*select_ops)(const struct nlattr * const tb[]); + const struct nft_expr_ops *(*select_ops)(const struct nft_ctx *, + const struct nlattr * const tb[]); const struct nft_expr_ops *ops; struct list_head list; const char *name; @@ -253,6 +272,8 @@ struct nft_expr_type { * @destroy: destruction function * @dump: function to dump parameters * @type: expression type + * @validate: validate expression, called during loop detection + * @data: extra data to attach to this expression operation */ struct nft_expr; struct nft_expr_ops { @@ -267,8 +288,11 @@ struct nft_expr_ops { void (*destroy)(const struct nft_expr *expr); int (*dump)(struct sk_buff *skb, const struct nft_expr *expr); - const struct nft_data * (*get_verdict)(const struct nft_expr *expr); + int (*validate)(const struct nft_ctx *ctx, + const struct nft_expr *expr, + const struct nft_data **data); const struct nft_expr_type *type; + void *data; }; #define NFT_EXPR_MAXATTR 16 @@ -368,16 +392,25 @@ enum nft_chain_type { NFT_CHAIN_T_MAX }; +struct nft_stats { + u64 bytes; + u64 pkts; +}; + /** * struct nft_base_chain - nf_tables base chain * * @ops: netfilter hook ops * @type: chain type + * @policy: default policy + * @stats: per-cpu chain stats * @chain: the chain */ struct nft_base_chain { struct nf_hook_ops ops; enum nft_chain_type type; + u8 policy; + struct nft_stats __percpu *stats; struct nft_chain chain; }; @@ -386,11 +419,8 @@ static inline struct nft_base_chain *nft_base_chain(const struct nft_chain *chai return container_of(chain, struct nft_base_chain, chain); } -extern unsigned int nft_do_chain(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 *)); +extern unsigned int nft_do_chain_pktinfo(struct nft_pktinfo *pkt, + const struct nf_hook_ops *ops); /** * struct nft_table - nf_tables table diff --git a/include/net/netfilter/nf_tables_ipv4.h b/include/net/netfilter/nf_tables_ipv4.h new file mode 100644 index 000000000000..1be1c2c197ee --- /dev/null +++ b/include/net/netfilter/nf_tables_ipv4.h @@ -0,0 +1,23 @@ +#ifndef _NF_TABLES_IPV4_H_ +#define _NF_TABLES_IPV4_H_ + +#include <net/netfilter/nf_tables.h> +#include <net/ip.h> + +static inline void +nft_set_pktinfo_ipv4(struct nft_pktinfo *pkt, + const struct nf_hook_ops *ops, + struct sk_buff *skb, + const struct net_device *in, + const struct net_device *out) +{ + struct iphdr *ip; + + nft_set_pktinfo(pkt, ops, skb, in, out); + + pkt->xt.thoff = ip_hdrlen(pkt->skb); + ip = ip_hdr(pkt->skb); + pkt->xt.fragoff = ntohs(ip->frag_off) & IP_OFFSET; +} + +#endif diff --git a/include/net/netfilter/nf_tables_ipv6.h b/include/net/netfilter/nf_tables_ipv6.h new file mode 100644 index 000000000000..4a9b88a65963 --- /dev/null +++ b/include/net/netfilter/nf_tables_ipv6.h @@ -0,0 +1,30 @@ +#ifndef _NF_TABLES_IPV6_H_ +#define _NF_TABLES_IPV6_H_ + +#include <linux/netfilter_ipv6/ip6_tables.h> +#include <net/ipv6.h> + +static inline int +nft_set_pktinfo_ipv6(struct nft_pktinfo *pkt, + const struct nf_hook_ops *ops, + struct sk_buff *skb, + const struct net_device *in, + const struct net_device *out) +{ + int protohdr, thoff = 0; + unsigned short frag_off; + + nft_set_pktinfo(pkt, ops, skb, in, out); + + protohdr = ipv6_find_hdr(pkt->skb, &thoff, -1, &frag_off, NULL); + /* If malformed, drop it */ + if (protohdr < 0) + return -1; + + pkt->xt.thoff = thoff; + pkt->xt.fragoff = frag_off; + + return 0; +} + +#endif |