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net/smc: check for healthy link group resp. connections

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If a problem for at least one connection of a link group is detected,
the whole link group and all its connections are terminated.
This patch adds a check for healthy link group when trying to reserve
a work request, and checks for healthy connections before starting
a tx worker.

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
2018-01-25 11:15:36 +01:00
committed by David S. Miller
parent 732720fafd
commit 1a0a04c7a8
4 changed files with 29 additions and 12 deletions
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9
net/smc/smc_cdc.c
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@@ -65,9 +65,14 @@ int smc_cdc_get_free_slot(struct smc_connection *conn,
struct smc_cdc_tx_pend **pend)
{
struct smc_link *link = &conn->lgr->lnk[SMC_SINGLE_LINK];
int rc;
return smc_wr_tx_get_free_slot(link, smc_cdc_tx_handler, wr_buf,
(struct smc_wr_tx_pend_priv **)pend);
rc = smc_wr_tx_get_free_slot(link, smc_cdc_tx_handler, wr_buf,
(struct smc_wr_tx_pend_priv **)pend);
if (!conn->alert_token_local)
/* abnormal termination */
rc = -EPIPE;
return rc;
}
static inline void smc_cdc_add_pending_send(struct smc_connection *conn,