net/netfilter/nfnetlink_hook.c

61 static struct nlattr *nfnl_start_info_type(struct sk_buff *nlskb, enum nfnl_hook_chaintype t)
63 	struct nlattr *nest = nla_nest_start(nlskb, NFNLA_HOOK_CHAIN_INFO);
69 	ret = nla_put_be32(nlskb, NFNLA_HOOK_INFO_TYPE, htonl(t));
73 	nla_nest_cancel(nlskb, nest);
77 static int nfnl_hook_put_bpf_prog_info(struct sk_buff *nlskb,
91 	nest = nfnl_start_info_type(nlskb, NFNL_HOOK_TYPE_BPF);
95 	nest2 = nla_nest_start(nlskb, NFNLA_HOOK_INFO_DESC);
99 	ret = nla_put_be32(nlskb, NFNLA_HOOK_BPF_ID, htonl(prog->aux->id));
103 	nla_nest_end(nlskb, nest2);
104 	nla_nest_end(nlskb, nest);
108 	nla_nest_cancel(nlskb, nest);
112 static int nfnl_hook_put_nft_chain_info(struct sk_buff *nlskb,
117 	struct net *net = sock_net(nlskb->sk);
127 	nest = nfnl_start_info_type(nlskb, NFNL_HOOK_TYPE_NFTABLES);
131 	nest2 = nla_nest_start(nlskb, NFNLA_HOOK_INFO_DESC);
135 	ret = nla_put_string(nlskb, NFNLA_CHAIN_TABLE, chain->table->name);
139 	ret = nla_put_string(nlskb, NFNLA_CHAIN_NAME, chain->name);
143 	ret = nla_put_u8(nlskb, NFNLA_CHAIN_FAMILY, chain->table->family);
147 	nla_nest_end(nlskb, nest2);
148 	nla_nest_end(nlskb, nest);
152 	nla_nest_cancel(nlskb, nest);
156 static int nfnl_hook_dump_one(struct sk_buff *nlskb,
162 	unsigned int portid = NETLINK_CB(nlskb).portid;
170 	nlh = nfnl_msg_put(nlskb, portid, seq, event,
192 			ret = nla_put_string(nlskb, NFNLA_HOOK_MODULE_NAME, module_name);
198 	ret = nla_put_string(nlskb, NFNLA_HOOK_FUNCTION_NAME, sym);
208 	ret = nla_put_be32(nlskb, NFNLA_HOOK_HOOKNUM, htonl(hooknum));
212 	ret = nla_put_be32(nlskb, NFNLA_HOOK_PRIORITY, htonl(ops->priority));
218 		ret = nfnl_hook_put_nft_chain_info(nlskb, ctx, seq, ops->priv);
221 		ret = nfnl_hook_put_bpf_prog_info(nlskb, ctx, seq, ops->priv);
233 	nlmsg_end(nlskb, nlh);
236 	nlmsg_trim(nlskb, nlh);
302 static int nfnl_hook_dump(struct sk_buff *nlskb,
308 	struct net *net = sock_net(nlskb->sk);
330 		err = nfnl_hook_dump_one(nlskb, ctx, ops[i], family,
337 	nl_dump_check_consistent(cb, nlmsg_hdr(nlskb));
340 	return nlskb->len;