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smc: socket closing and linkgroup cleanup

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smc_shutdown() and smc_release() handling
delayed linkgroup cleanup for linkgroups without connections

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
2017-01-09 16:55:25 +01:00
committed by David S. Miller
parent 952310ccf2
commit b38d732477
11 changed files with 668 additions and 36 deletions
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23
net/smc/smc_cdc.c
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@@ -16,6 +16,7 @@
#include "smc_cdc.h"
#include "smc_tx.h"
#include "smc_rx.h"
#include "smc_close.h"
/********************************** send *************************************/
@@ -55,6 +56,9 @@ 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);
}
@@ -149,6 +153,14 @@ 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)
@@ -201,15 +213,20 @@ static void smc_cdc_msg_recv_action(struct smc_sock *smc,
smc->sk.sk_data_ready(&smc->sk);
}
if (conn->local_rx_ctrl.conn_state_flags.peer_conn_abort)
if (conn->local_rx_ctrl.conn_state_flags.peer_conn_abort) {
smc->sk.sk_err = ECONNRESET;
conn->local_tx_ctrl.conn_state_flags.peer_conn_abort = 1;
}
if (smc_cdc_rxed_any_close_or_senddone(conn))
/* subsequent patch: terminate connection */
smc_close_passive_received(smc);
/* piggy backed tx info */
/* trigger sndbuf consumer: RDMA write into peer RMBE and CDC */
if (diff_cons && smc_tx_prepared_sends(conn))
if (diff_cons && smc_tx_prepared_sends(conn)) {
smc_tx_sndbuf_nonempty(conn);
/* trigger socket release if connection closed */
smc_close_wake_tx_prepared(smc);
}
/* subsequent patch: trigger socket release if connection closed */