From: Ursula Braun Date: Wed, 24 Jan 2018 09:28:14 +0000 (+0100) Subject: net/smc: get rid of tx_pend waits in socket closing X-Git-Tag: v4.16-rc1~123^2~66^2~3 X-Git-Url: https://asedeno.scripts.mit.edu/gitweb/?a=commitdiff_plain;h=8429c1343519d7452b8ccd9af9716147512831c9;p=linux.git 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 Signed-off-by: David S. Miller --- diff --git a/net/smc/smc_cdc.c b/net/smc/smc_cdc.c index d4155ff6acde..51805334e001 100644 --- a/net/smc/smc_cdc.c +++ b/net/smc/smc_cdc.c @@ -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) diff --git a/net/smc/smc_cdc.h b/net/smc/smc_cdc.h index 149ceda1b088..ab240b37ad11 100644 --- a/net/smc/smc_cdc.h +++ b/net/smc/smc_cdc.h @@ -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 */ diff --git a/net/smc/smc_close.c b/net/smc/smc_close.c index 11793912f001..bc539ccb8fa0 100644 --- a/net/smc/smc_close.c +++ b/net/smc/smc_close.c @@ -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 @@ int smc_close_active(struct smc_sock *smc) 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 @@ int smc_close_active(struct smc_sock *smc) 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 @@ int smc_close_active(struct smc_sock *smc) 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: diff --git a/net/smc/smc_wr.c b/net/smc/smc_wr.c index de4537f66832..a4477b4a9c18 100644 --- a/net/smc/smc_wr.c +++ b/net/smc/smc_wr.c @@ -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) diff --git a/net/smc/smc_wr.h b/net/smc/smc_wr.h index 2acf12b06063..ef0c3494c9cb 100644 --- a/net/smc/smc_wr.h +++ b/net/smc/smc_wr.h @@ -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,