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sctp: remove the dead field of sctp_transport

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After we use refcnt to check if transport is alive, the dead can be
removed from sctp_transport.

The traversal of transport_addr_list in procfs dump is using
list_for_each_entry_rcu, no need to check if it has been freed.

sctp_generate_t3_rtx_event and sctp_generate_heartbeat_event is
protected by sock lock, it's not necessary to check dead, either.
also, the timers are cancelled when sctp_transport_free() is
called, that it doesn't wait for refcnt to reach 0 to cancel them.

Signed-off-by: Xin Long <lucien.xin@gmail.com>
Signed-off-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Xin Long
2016-01-22 01:49:09 +08:00
committed by David S. Miller
parent fba4c330c5
commit 47faa1e4c5
4 changed files with 2 additions and 21 deletions
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3
include/net/sctp/structs.h
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@@ -756,7 +756,6 @@ struct sctp_transport {
/* Reference counting. */
atomic_t refcnt;
__u32 dead:1,
/* RTO-Pending : A flag used to track if one of the DATA
* chunks sent to this address is currently being
* used to compute a RTT. If this flag is 0,
@@ -766,7 +765,7 @@ struct sctp_transport {
* calculation completes (i.e. the DATA chunk
* is SACK'd) clear this flag.
*/
rto_pending:1,
__u32 rto_pending:1,
/*
* hb_sent : a flag that signals that we have a pending