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IB/srpt: Fix srpt_write_pending()

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The only allowed return values for the write_pending() callback
function are 0, -EAGAIN and -ENOMEM. Since attempting to perform
RDMA over a disconnecting channel will result in an IB error
completion anyway, remove the code that checks the channel state
from srpt_write_pending().

Signed-off-by: Bart Van Assche <bart.vanassche@sandisk.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Sagi Grimberg <sagig@mellanox.com>
Cc: Alex Estrin <alex.estrin@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
This commit is contained in:
Bart Van Assche 2016-02-11 11:09:10 -08:00 committed by Doug Ledford
parent aaf45bd83e
commit fc3af58d3f
1 changed files with 4 additions and 29 deletions
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33
drivers/infiniband/ulp/srpt/ib_srpt.c
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@ -2487,39 +2487,14 @@ static int srpt_write_pending_status(struct se_cmd *se_cmd)
*/
static int srpt_write_pending(struct se_cmd *se_cmd)
{
struct srpt_rdma_ch *ch;
struct srpt_send_ioctx *ioctx;
struct srpt_send_ioctx *ioctx =
container_of(se_cmd, struct srpt_send_ioctx, cmd);
struct srpt_rdma_ch *ch = ioctx->ch;
enum srpt_command_state new_state;
int ret;
ioctx = container_of(se_cmd, struct srpt_send_ioctx, cmd);
new_state = srpt_set_cmd_state(ioctx, SRPT_STATE_NEED_DATA);
WARN_ON(new_state == SRPT_STATE_DONE);
ch = ioctx->ch;
BUG_ON(!ch);
switch (ch->state) {
case CH_CONNECTING:
WARN(true, "unexpected channel state %d\n", ch->state);
ret = -EINVAL;
goto out;
case CH_LIVE:
break;
case CH_DISCONNECTING:
case CH_DRAINING:
case CH_DISCONNECTED:
pr_debug("cmd with tag %lld: channel disconnecting\n",
ioctx->cmd.tag);
srpt_set_cmd_state(ioctx, SRPT_STATE_DATA_IN);
ret = -EINVAL;
goto out;
}
ret = srpt_xfer_data(ch, ioctx);
out:
return ret;
return srpt_xfer_data(ch, ioctx);
}
static u8 tcm_to_srp_tsk_mgmt_status(const int tcm_mgmt_status)