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net/smc: get rid of tx_pend waits in socket closing 

There is no need to wait for confirmation of pending tx requests
for a closing connection, since pending tx slots are dismissed
when finishing a connection.

Signed-off-by: Ursula Braun <ubraun@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Ursula Braun 2018-01-24 10:28:14 +01:00 committed by David S. Miller
parent 35a6b17847
commit 8429c13435
5 changed files with 0 additions and 57 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

11
net/smc/smc_cdc.c
View File

@ -57,9 +57,6 @@ static void smc_cdc_tx_handler(struct smc_wr_tx_pend_priv *pnd_snd,
cdcpend->conn);
}
smc_tx_sndbuf_nonfull(smc);
if (smc->sk.sk_state != SMC_ACTIVE)
/* wake up smc_close_wait_tx_pends() */
smc->sk.sk_state_change(&smc->sk);
bh_unlock_sock(&smc->sk);
}
@ -155,14 +152,6 @@ void smc_cdc_tx_dismiss_slots(struct smc_connection *conn)
(unsigned long)conn);
}
bool smc_cdc_tx_has_pending(struct smc_connection *conn)
{
struct smc_link *link = &conn->lgr->lnk[SMC_SINGLE_LINK];
return smc_wr_tx_has_pending(link, SMC_CDC_MSG_TYPE,
smc_cdc_tx_filter, (unsigned long)conn);
}
/********************************* receive ***********************************/
static inline bool smc_cdc_before(u16 seq1, u16 seq2)

1
net/smc/smc_cdc.h
View File

@ -214,7 +214,6 @@ void smc_cdc_tx_dismiss_slots(struct smc_connection *conn);
int smc_cdc_msg_send(struct smc_connection *conn, struct smc_wr_buf *wr_buf,
struct smc_cdc_tx_pend *pend);
int smc_cdc_get_slot_and_msg_send(struct smc_connection *conn);
bool smc_cdc_tx_has_pending(struct smc_connection *conn);
int smc_cdc_init(void) __init;
#endif /* SMC_CDC_H */

25
net/smc/smc_close.c
View File

@ -19,8 +19,6 @@
#include "smc_cdc.h"
#include "smc_close.h"
#define SMC_CLOSE_WAIT_TX_PENDS_TIME (5 * HZ)
static void smc_close_cleanup_listen(struct sock *parent)
{
struct sock *sk;
@ -30,26 +28,6 @@ static void smc_close_cleanup_listen(struct sock *parent)
smc_close_non_accepted(sk);
}
static void smc_close_wait_tx_pends(struct smc_sock *smc)
{
DEFINE_WAIT_FUNC(wait, woken_wake_function);
struct sock *sk = &smc->sk;
signed long timeout;
timeout = SMC_CLOSE_WAIT_TX_PENDS_TIME;
add_wait_queue(sk_sleep(sk), &wait);
while (!signal_pending(current) && timeout) {
int rc;
rc = sk_wait_event(sk, &timeout,
!smc_cdc_tx_has_pending(&smc->conn),
&wait);
if (rc)
break;
}
remove_wait_queue(sk_sleep(sk), &wait);
}
/* wait for sndbuf data being transmitted */
static void smc_close_stream_wait(struct smc_sock *smc, long timeout)
{
@ -230,7 +208,6 @@ again:
rc = smc_close_final(conn);
}
sk->sk_state = SMC_CLOSED;
smc_close_wait_tx_pends(smc);
break;
case SMC_APPCLOSEWAIT1:
case SMC_APPCLOSEWAIT2:
@ -251,7 +228,6 @@ again:
else
/* peer has just issued a shutdown write */
sk->sk_state = SMC_PEERFINCLOSEWAIT;
smc_close_wait_tx_pends(smc);
break;
case SMC_PEERCLOSEWAIT1:
case SMC_PEERCLOSEWAIT2:
@ -271,7 +247,6 @@ again:
lock_sock(sk);
smc_close_abort(conn);
sk->sk_state = SMC_CLOSED;
smc_close_wait_tx_pends(smc);
break;
case SMC_PEERABORTWAIT:
case SMC_CLOSED:

18
net/smc/smc_wr.c
View File

@ -319,24 +319,6 @@ void smc_wr_tx_dismiss_slots(struct smc_link *link, u8 wr_rx_hdr_type,
}
}
bool smc_wr_tx_has_pending(struct smc_link *link, u8 wr_rx_hdr_type,
smc_wr_tx_filter filter, unsigned long data)
{
struct smc_wr_tx_pend_priv *tx_pend;
struct smc_wr_rx_hdr *wr_rx;
int i;
for_each_set_bit(i, link->wr_tx_mask, link->wr_tx_cnt) {
wr_rx = (struct smc_wr_rx_hdr *)&link->wr_rx_bufs[i];
if (wr_rx->type != wr_rx_hdr_type)
continue;
tx_pend = &link->wr_tx_pends[i].priv;
if (filter(tx_pend, data))
return true;
}
return false;
}
/****************************** receive queue ********************************/
int smc_wr_rx_register_handler(struct smc_wr_rx_handler *handler)

2
net/smc/smc_wr.h
View File

@ -93,8 +93,6 @@ int smc_wr_tx_put_slot(struct smc_link *link,
int smc_wr_tx_send(struct smc_link *link,
struct smc_wr_tx_pend_priv *wr_pend_priv);
void smc_wr_tx_cq_handler(struct ib_cq *ib_cq, void *cq_context);
bool smc_wr_tx_has_pending(struct smc_link *link, u8 wr_rx_hdr_type,
smc_wr_tx_filter filter, unsigned long data);
void smc_wr_tx_dismiss_slots(struct smc_link *lnk, u8 wr_rx_hdr_type,
smc_wr_tx_filter filter,
smc_wr_tx_dismisser dismisser,