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net/smc: handle unregistered buffers

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When smc_wr_reg_send() fails then tag (regerr) the affected buffer and
free it in smc_buf_unuse().

Signed-off-by: Karsten Graul <kgraul@linux.ibm.com>
Signed-off-by: Ursula Braun <ubraun@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Karsten Graul
2018-05-03 17:57:38 +02:00
committed by David S. Miller
parent e63a5f8c19
commit a6920d1d13
3 changed files with 24 additions and 5 deletions
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4
net/smc/af_smc.c
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@@ -296,8 +296,10 @@ static void smc_copy_sock_settings_to_smc(struct smc_sock *smc)
static int smc_reg_rmb(struct smc_link *link, struct smc_buf_desc *rmb_desc)
{
/* register memory region for new rmb */
if (smc_wr_reg_send(link, rmb_desc->mr_rx[SMC_SINGLE_LINK]))
if (smc_wr_reg_send(link, rmb_desc->mr_rx[SMC_SINGLE_LINK])) {
rmb_desc->regerr = 1;
return -EFAULT;
}
return 0;
}