static int ctnetlink_fill_info(struct sk_buff *skb, u32 pid, u32 seq, int event, int nowait, const struct nf_conn *ct) { struct nlmsghdr *nlh; struct nfgenmsg *nfmsg; struct nlattr *nest_parms; unsigned char *b = skb_tail_pointer(skb); event |= NFNL_SUBSYS_CTNETLINK << 8; nlh = NLMSG_PUT(skb, pid, seq, event, sizeof(struct nfgenmsg)); nfmsg = NLMSG_DATA(nlh); nlh->nlmsg_flags = (nowait && pid) ? NLM_F_MULTI : 0; nfmsg->nfgen_family = nf_ct_l3num(ct); nfmsg->version = NFNETLINK_V0; nfmsg->res_id = 0; nest_parms = nla_nest_start(skb, CTA_TUPLE_ORIG | NLA_F_NESTED); if (!nest_parms) goto nla_put_failure; if (ctnetlink_dump_tuples(skb, tuple(ct, IP_CT_DIR_ORIGINAL)) < 0) goto nla_put_failure; nla_nest_end(skb, nest_parms); nest_parms = nla_nest_start(skb, CTA_TUPLE_REPLY | NLA_F_NESTED); if (!nest_parms) goto nla_put_failure; if (ctnetlink_dump_tuples(skb, tuple(ct, IP_CT_DIR_REPLY)) < 0) goto nla_put_failure; nla_nest_end(skb, nest_parms); if (ctnetlink_dump_status(skb, ct) < 0 || ctnetlink_dump_timeout(skb, ct) < 0 || ctnetlink_dump_counters(skb, ct, IP_CT_DIR_ORIGINAL) < 0 || ctnetlink_dump_counters(skb, ct, IP_CT_DIR_REPLY) < 0 || ctnetlink_dump_protoinfo(skb, ct) < 0 || ctnetlink_dump_helpinfo(skb, ct) < 0 || ctnetlink_dump_mark(skb, ct) < 0 || ctnetlink_dump_secmark(skb, ct) < 0 || ctnetlink_dump_id(skb, ct) < 0 || ctnetlink_dump_use(skb, ct) < 0 || ctnetlink_dump_master(skb, ct) < 0 || ctnetlink_dump_nat_seq_adj(skb, ct) < 0) goto nla_put_failure; nlh->nlmsg_len = skb_tail_pointer(skb) - b; return skb->len; nlmsg_failure: nla_put_failure: nlmsg_trim(skb, b); return -1; }
static int ctnetlink_fill_info(struct sk_buff *skb, u32 pid, u32 seq, int event, int nowait, const struct nf_conn *ct) { struct nlmsghdr *nlh; struct nfgenmsg *nfmsg; struct nfattr *nest_parms; unsigned char *b; b = skb->tail; event |= NFNL_SUBSYS_CTNETLINK << 8; nlh = NLMSG_PUT(skb, pid, seq, event, sizeof(struct nfgenmsg)); nfmsg = NLMSG_DATA(nlh); nlh->nlmsg_flags = (nowait && pid) ? NLM_F_MULTI : 0; nfmsg->nfgen_family = ct->tuplehash[IP_CT_DIR_ORIGINAL].tuple.src.l3num; nfmsg->version = NFNETLINK_V0; nfmsg->res_id = 0; nest_parms = NFA_NEST(skb, CTA_TUPLE_ORIG); if (ctnetlink_dump_tuples(skb, tuple(ct, IP_CT_DIR_ORIGINAL)) < 0) goto nfattr_failure; NFA_NEST_END(skb, nest_parms); nest_parms = NFA_NEST(skb, CTA_TUPLE_REPLY); if (ctnetlink_dump_tuples(skb, tuple(ct, IP_CT_DIR_REPLY)) < 0) goto nfattr_failure; NFA_NEST_END(skb, nest_parms); if (ctnetlink_dump_status(skb, ct) < 0 || ctnetlink_dump_timeout(skb, ct) < 0 || ctnetlink_dump_counters(skb, ct, IP_CT_DIR_ORIGINAL) < 0 || ctnetlink_dump_counters(skb, ct, IP_CT_DIR_REPLY) < 0 || ctnetlink_dump_protoinfo(skb, ct) < 0 || ctnetlink_dump_helpinfo(skb, ct) < 0 || ctnetlink_dump_mark(skb, ct) < 0 || ctnetlink_dump_id(skb, ct) < 0 || ctnetlink_dump_use(skb, ct) < 0) goto nfattr_failure; nlh->nlmsg_len = skb->tail - b; return skb->len; nlmsg_failure: nfattr_failure: skb_trim(skb, b - skb->data); return -1; }