1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef _NF_TABLES_IPV4_H_
3 #define _NF_TABLES_IPV4_H_
5 #include <net/netfilter/nf_tables.h>
9 nft_set_pktinfo_ipv4(struct nft_pktinfo *pkt,
11 const struct nf_hook_state *state)
15 nft_set_pktinfo(pkt, skb, state);
17 ip = ip_hdr(pkt->skb);
18 pkt->tprot_set = true;
19 pkt->tprot = ip->protocol;
20 pkt->xt.thoff = ip_hdrlen(pkt->skb);
21 pkt->xt.fragoff = ntohs(ip->frag_off) & IP_OFFSET;
25 __nft_set_pktinfo_ipv4_validate(struct nft_pktinfo *pkt,
27 const struct nf_hook_state *state)
29 struct iphdr *iph, _iph;
32 iph = skb_header_pointer(skb, skb_network_offset(skb), sizeof(*iph),
37 if (iph->ihl < 5 || iph->version != 4)
40 len = ntohs(iph->tot_len);
47 pkt->tprot_set = true;
48 pkt->tprot = iph->protocol;
49 pkt->xt.thoff = thoff;
50 pkt->xt.fragoff = ntohs(iph->frag_off) & IP_OFFSET;
56 nft_set_pktinfo_ipv4_validate(struct nft_pktinfo *pkt,
58 const struct nf_hook_state *state)
60 nft_set_pktinfo(pkt, skb, state);
61 if (__nft_set_pktinfo_ipv4_validate(pkt, skb, state) < 0)
62 nft_set_pktinfo_proto_unspec(pkt, skb);
65 extern struct nft_af_info nft_af_ipv4;