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Fix write resuduals handling on data receive error

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By default data receive error it should be assumed that no data
received, not that all data received as it is currently



git-svn-id: http://svn.code.sf.net/p/scst/svn/trunk@5138 d57e44dd-8a1f-0410-8b47-8ef2f437770f
This commit is contained in:
Vladislav Bolkhovitin
2013-12-05 04:05:49 +00:00
parent 34d764426a
commit 26b9e5eaad
3 changed files with 14 additions and 0 deletions
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3
scst/include/scst.h
View File

@@ -2028,6 +2028,9 @@ struct scst_cmd {
/* Set if cmd was pre-alloced by target driver */
unsigned int pre_alloced:1;
/* Set if scst_cmd_set_write_not_received_data_len() was called */
unsigned int write_not_received_set:1;
/**************************************************************/
/* cmd's async flags */

2
scst/src/scst_lib.c
View File

@@ -2943,6 +2943,8 @@ void scst_cmd_set_write_not_received_data_len(struct scst_cmd *cmd,
{
TRACE_ENTRY();
cmd->write_not_received_set = 1;
if (!cmd->expected_values_set) {
/*
* No expected values set, so no residuals processing.

9
scst/src/scst_targ.c
View File

@@ -1520,6 +1520,9 @@ void scst_rx_data(struct scst_cmd *cmd, int status,
break;
case SCST_RX_STATUS_ERROR_SENSE_SET:
if (!cmd->write_not_received_set)
scst_cmd_set_write_not_received_data_len(cmd,
cmd->expected_transfer_len);
scst_set_cmd_abnormal_done_state(cmd);
pref_context = SCST_CONTEXT_THREAD;
break;
@@ -1528,6 +1531,9 @@ void scst_rx_data(struct scst_cmd *cmd, int status,
set_bit(SCST_CMD_NO_RESP, &cmd->cmd_flags);
/* go through */
case SCST_RX_STATUS_ERROR:
if (!cmd->write_not_received_set)
scst_cmd_set_write_not_received_data_len(cmd,
cmd->expected_transfer_len);
scst_set_cmd_error(cmd,
SCST_LOAD_SENSE(scst_sense_hardw_error));
scst_set_cmd_abnormal_done_state(cmd);
@@ -1537,6 +1543,9 @@ void scst_rx_data(struct scst_cmd *cmd, int status,
default:
PRINT_ERROR("scst_rx_data() received unknown status %x",
status);
if (!cmd->write_not_received_set)
scst_cmd_set_write_not_received_data_len(cmd,
cmd->expected_transfer_len);
scst_set_cmd_abnormal_done_state(cmd);
pref_context = SCST_CONTEXT_THREAD;
break;