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>

5 files changed, 0 insertions, 57 deletions

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 @@ 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:
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,