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4acdbdbe50
If a connection tracking helper tells us to expect a connection, and we're already expecting that connection, we simply free the one they gave us and return success. The problem is that NAT helpers (eg. FTP) have to allocate the expectation first (to see what port is available) then rewrite the packet. If that rewrite fails, they try to remove the expectation, but it was freed in ip_conntrack_expect_related. This is one example of a larger problem: having registered the expectation, the pointer is no longer ours to use. Reference counting is needed for ctnetlink anyway, so introduce it now. To have a single "put" path, we need to grab the reference to the connection on creation, rather than open-coding it in the caller. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Signed-off-by: David S. Miller <davem@davemloft.net> |
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| .. | ||
| ip_conntrack.h | ||
| ip_conntrack_amanda.h | ||
| ip_conntrack_core.h | ||
| ip_conntrack_ftp.h | ||
| ip_conntrack_helper.h | ||
| ip_conntrack_icmp.h | ||
| ip_conntrack_irc.h | ||
| ip_conntrack_protocol.h | ||
| ip_conntrack_sctp.h | ||
| ip_conntrack_tcp.h | ||
| ip_conntrack_tftp.h | ||
| ip_conntrack_tuple.h | ||
| ip_logging.h | ||
| ip_nat.h | ||
| ip_nat_core.h | ||
| ip_nat_helper.h | ||
| ip_nat_protocol.h | ||
| ip_nat_rule.h | ||
| ip_queue.h | ||
| ip_tables.h | ||
| ipt_addrtype.h | ||
| ipt_ah.h | ||
| ipt_CLASSIFY.h | ||
| ipt_CLUSTERIP.h | ||
| ipt_comment.h | ||
| ipt_connmark.h | ||
| ipt_CONNMARK.h | ||
| ipt_conntrack.h | ||
| ipt_dscp.h | ||
| ipt_DSCP.h | ||
| ipt_ecn.h | ||
| ipt_ECN.h | ||
| ipt_esp.h | ||
| ipt_hashlimit.h | ||
| ipt_helper.h | ||
| ipt_iprange.h | ||
| ipt_length.h | ||
| ipt_limit.h | ||
| ipt_LOG.h | ||
| ipt_mac.h | ||
| ipt_mark.h | ||
| ipt_MARK.h | ||
| ipt_multiport.h | ||
| ipt_owner.h | ||
| ipt_physdev.h | ||
| ipt_pkttype.h | ||
| ipt_realm.h | ||
| ipt_recent.h | ||
| ipt_REJECT.h | ||
| ipt_SAME.h | ||
| ipt_sctp.h | ||
| ipt_state.h | ||
| ipt_TCPMSS.h | ||
| ipt_tcpmss.h | ||
| ipt_TOS.h | ||
| ipt_tos.h | ||
| ipt_ttl.h | ||
| ipt_ULOG.h | ||
| listhelp.h | ||