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authorHannes Reinecke <hare@suse.de>2015-01-08 07:43:44 +0100
committerChristoph Hellwig <hch@lst.de>2015-01-09 15:44:29 +0100
commit9e5ed2a5b3662c6f398023042c02aaa527099a3d (patch)
tree494155845e8fd696e96642bd08667e48038e31d8 /drivers/scsi/constants.c
parentaa66ab35f2b31e96f4b60e675b2d6ffc51d472eb (diff)
scsi: use external buffer for command logging
Use an external buffer for __scsi_print_command() and move command logging over to use the per-cpu logging buffer. With that we can guarantee the command always will always be formatted in one line. So we can even print out a variable length command correctly across several lines. Finally rename __scsi_print_command() to __scsi_format_comment() to better reflect the functionality. Tested-by: Robert Elliott <elliott@hp.com> Reviewed-by: Robert Elliott <elliott@hp.com> Signed-off-by: Hannes Reinecke <hare@suse.de> Signed-off-by: Christoph Hellwig <hch@lst.de>
Diffstat (limited to 'drivers/scsi/constants.c')
-rw-r--r--drivers/scsi/constants.c74
1 files changed, 2 insertions, 72 deletions
diff --git a/drivers/scsi/constants.c b/drivers/scsi/constants.c
index 55a7157b6e2b..77929601d6d2 100644
--- a/drivers/scsi/constants.c
+++ b/drivers/scsi/constants.c
@@ -24,8 +24,6 @@
#define THIRD_PARTY_COPY_OUT 0x83
#define THIRD_PARTY_COPY_IN 0x84
-#define VENDOR_SPECIFIC_CDB 0xc0
-
struct sa_name_list {
int opcode;
const struct value_name_pair *arr;
@@ -281,8 +279,8 @@ static struct sa_name_list sa_names_arr[] = {
};
#endif /* CONFIG_SCSI_CONSTANTS */
-static bool scsi_opcode_sa_name(int opcode, int service_action,
- const char **cdb_name, const char **sa_name)
+bool scsi_opcode_sa_name(int opcode, int service_action,
+ const char **cdb_name, const char **sa_name)
{
struct sa_name_list *sa_name_ptr;
const struct value_name_pair *arr = NULL;
@@ -315,74 +313,6 @@ static bool scsi_opcode_sa_name(int opcode, int service_action,
return true;
}
-static void print_opcode_name(const unsigned char *cdbp, size_t cdb_len)
-{
- int sa, cdb0;
- const char *cdb_name = NULL, *sa_name = NULL;
-
- cdb0 = cdbp[0];
- if (cdb0 == VARIABLE_LENGTH_CMD) {
- if (cdb_len < 10) {
- printk("short variable length command, len=%zu",
- cdb_len);
- return;
- }
- sa = (cdbp[8] << 8) + cdbp[9];
- } else
- sa = cdbp[1] & 0x1f;
-
- if (!scsi_opcode_sa_name(cdb0, sa, &cdb_name, &sa_name)) {
- if (cdb_name)
- printk("%s", cdb_name);
- else if (cdb0 >= VENDOR_SPECIFIC_CDB)
- printk("cdb[0]=0x%x (vendor)", cdb0);
- else if (cdb0 >= 0x60 && cdb0 < 0x7e)
- printk("cdb[0]=0x%x (reserved)", cdb0);
- else
- printk("cdb[0]=0x%x", cdb0);
- } else {
- if (sa_name)
- printk("%s", sa_name);
- else if (cdb_name)
- printk("%s, sa=0x%x", cdb_name, sa);
- else
- printk("cdb[0]=0x%x, sa=0x%x", cdb0, sa);
- }
-}
-
-void __scsi_print_command(const unsigned char *cdb, size_t cdb_len)
-{
- int k, len;
-
- print_opcode_name(cdb, cdb_len);
- len = scsi_command_size(cdb);
- if (cdb_len < len)
- len = cdb_len;
- /* print out all bytes in cdb */
- for (k = 0; k < len; ++k)
- printk(" %02x", cdb[k]);
- printk("\n");
-}
-EXPORT_SYMBOL(__scsi_print_command);
-
-void scsi_print_command(struct scsi_cmnd *cmd)
-{
- int k;
-
- if (cmd->cmnd == NULL)
- return;
-
- scmd_printk(KERN_INFO, cmd, "CDB: ");
- print_opcode_name(cmd->cmnd, cmd->cmd_len);
-
- /* print out all bytes in cdb */
- printk(":");
- for (k = 0; k < cmd->cmd_len; ++k)
- printk(" %02x", cmd->cmnd[k]);
- printk("\n");
-}
-EXPORT_SYMBOL(scsi_print_command);
-
#ifdef CONFIG_SCSI_CONSTANTS
struct error_info {

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