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[NET] Generalise tcp_listen_opt

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This chunks out the accept_queue and tcp_listen_opt code and moves
them to net/core/request_sock.c and include/net/request_sock.h, to
make it useful for other transport protocols, DCCP being the first one
to use it.

Next patches will rename tcp_listen_opt to accept_sock and remove the
inline tcp functions that just call a reqsk_queue_ function.

Signed-off-by: Arnaldo Carvalho de Melo <acme@ghostprotocols.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Arnaldo Carvalho de Melo
2005-06-18 22:47:59 -07:00
committed by David S. Miller
parent 60236fdd08
commit 0e87506fcc
11 changed files with 281 additions and 146 deletions
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17
include/linux/tcp.h
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@ -379,22 +379,7 @@ struct tcp_sock {
__u32 total_retrans; /* Total retransmits for entire connection */
/* The syn_wait_lock is necessary only to avoid proc interface having
* to grab the main lock sock while browsing the listening hash
* (otherwise it's deadlock prone).
* This lock is acquired in read mode only from listening_get_next()
* and it's acquired in write mode _only_ from code that is actively
* changing the syn_wait_queue. All readers that are holding
* the master sock lock don't need to grab this lock in read mode
* too as the syn_wait_queue writes are always protected from
* the main sock lock.
*/
rwlock_t syn_wait_lock;
struct tcp_listen_opt *listen_opt;
/* FIFO of established children */
struct request_sock *accept_queue;
struct request_sock *accept_queue_tail;
struct request_sock_queue accept_queue; /* FIFO of established children */
unsigned int keepalive_time; /* time before keep alive takes place */
unsigned int keepalive_intvl; /* time interval between keep alive probes */