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Target/iser: Move check signature status to a function 

Remove code duplication from RDMA_READ and RDMA_WRITE
completions that do basically the same check.

Signed-off-by: Sagi Grimberg <sagig@mellanox.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
This commit is contained in:
Sagi Grimberg 2014-03-17 12:52:18 +02:00 committed by Nicholas Bellinger
parent 897bb2c916
commit 96b7973e1c
1 changed files with 50 additions and 65 deletions
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79
drivers/infiniband/ulp/isert/ib_isert.c
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@ -1657,26 +1657,20 @@ isert_completion_put(struct iser_tx_desc *tx_desc, struct isert_cmd *isert_cmd,
isert_put_cmd(isert_cmd);
}
static void
isert_completion_rdma_write(struct iser_tx_desc *tx_desc,
struct isert_cmd *isert_cmd)
static int
isert_check_pi_status(struct se_cmd *se_cmd, struct ib_mr *sig_mr)
{
struct isert_rdma_wr *wr = &isert_cmd->rdma_wr;
struct iscsi_cmd *cmd = isert_cmd->iscsi_cmd;
struct se_cmd *se_cmd = &cmd->se_cmd;
struct isert_conn *isert_conn = isert_cmd->conn;
struct isert_device *device = isert_conn->conn_device;
struct ib_mr_status mr_status;
int ret = 0;
int ret;
if (wr->fr_desc && wr->fr_desc->ind & ISERT_PROTECTED) {
ret = ib_check_mr_status(wr->fr_desc->pi_ctx->sig_mr,
IB_MR_CHECK_SIG_STATUS, &mr_status);
ret = ib_check_mr_status(sig_mr, IB_MR_CHECK_SIG_STATUS, &mr_status);
if (ret) {
pr_err("ib_check_mr_status failed, ret %d\n", ret);
goto fail_mr_status;
}
if (mr_status.fail_status & IB_MR_CHECK_SIG_STATUS) {
u64 sec_offset_err;
u32 block_size = se_cmd->se_dev->dev_attrib.block_size + 8;
switch (mr_status.sig_err.err_type) {
@ -1690,8 +1684,9 @@ isert_completion_rdma_write(struct iser_tx_desc *tx_desc,
se_cmd->pi_err = TCM_LOGICAL_BLOCK_APP_TAG_CHECK_FAILED;
break;
}
se_cmd->bad_sector = mr_status.sig_err.sig_err_offset;
do_div(se_cmd->bad_sector, block_size);
sec_offset_err = mr_status.sig_err.sig_err_offset;
do_div(sec_offset_err, block_size);
se_cmd->bad_sector = sec_offset_err + se_cmd->t_task_lba;
pr_err("isert: PI error found type %d at sector 0x%llx "
"expected 0x%x vs actual 0x%x\n",
@ -1701,9 +1696,28 @@ isert_completion_rdma_write(struct iser_tx_desc *tx_desc,
mr_status.sig_err.actual);
ret = 1;
}
}
fail_mr_status:
return ret;
}
static void
isert_completion_rdma_write(struct iser_tx_desc *tx_desc,
struct isert_cmd *isert_cmd)
{
struct isert_rdma_wr *wr = &isert_cmd->rdma_wr;
struct iscsi_cmd *cmd = isert_cmd->iscsi_cmd;
struct se_cmd *se_cmd = &cmd->se_cmd;
struct isert_conn *isert_conn = isert_cmd->conn;
struct isert_device *device = isert_conn->conn_device;
int ret = 0;
if (wr->fr_desc && wr->fr_desc->ind & ISERT_PROTECTED) {
ret = isert_check_pi_status(se_cmd,
wr->fr_desc->pi_ctx->sig_mr);
wr->fr_desc->ind &= ~ISERT_PROTECTED;
}
device->unreg_rdma_mem(isert_cmd, isert_conn);
wr->send_wr_num = 0;
if (ret)
@ -1722,43 +1736,14 @@ isert_completion_rdma_read(struct iser_tx_desc *tx_desc,
struct se_cmd *se_cmd = &cmd->se_cmd;
struct isert_conn *isert_conn = isert_cmd->conn;
struct isert_device *device = isert_conn->conn_device;
struct ib_mr_status mr_status;
int ret;
if (wr->fr_desc && wr->fr_desc->ind & ISERT_PROTECTED) {
ret = ib_check_mr_status(wr->fr_desc->pi_ctx->sig_mr,
IB_MR_CHECK_SIG_STATUS, &mr_status);
if (ret) {
pr_err("ib_check_mr_status failed, ret %d\n", ret);
goto fail_mr_status;
}
if (mr_status.fail_status & IB_MR_CHECK_SIG_STATUS) {
u32 block_size = se_cmd->se_dev->dev_attrib.block_size + 8;
switch (mr_status.sig_err.err_type) {
case IB_SIG_BAD_GUARD:
se_cmd->pi_err = TCM_LOGICAL_BLOCK_GUARD_CHECK_FAILED;
break;
case IB_SIG_BAD_REFTAG:
se_cmd->pi_err = TCM_LOGICAL_BLOCK_REF_TAG_CHECK_FAILED;
break;
case IB_SIG_BAD_APPTAG:
se_cmd->pi_err = TCM_LOGICAL_BLOCK_APP_TAG_CHECK_FAILED;
break;
}
se_cmd->bad_sector = mr_status.sig_err.sig_err_offset;
do_div(se_cmd->bad_sector, block_size);
pr_err("isert: PI error found type %d at sector 0x%llx "
"expected 0x%x vs actual 0x%x\n",
mr_status.sig_err.err_type,
(unsigned long long)se_cmd->bad_sector,
mr_status.sig_err.expected,
mr_status.sig_err.actual);
}
ret = isert_check_pi_status(se_cmd,
wr->fr_desc->pi_ctx->sig_mr);
wr->fr_desc->ind &= ~ISERT_PROTECTED;
}
fail_mr_status:
iscsit_stop_dataout_timer(cmd);
device->unreg_rdma_mem(isert_cmd, isert_conn);
cmd->write_data_done = wr->data.len;