Messages in this thread Patch in this message |  | | | Date | Mon, 18 Nov 2002 22:16:02 -0800 (PST) | | From | Andre Hedrick <> | | Subject | linux-2.4.18-modified-scsi-h.patch |
| |
Greetings Doug et al.
Please consider the addition of this simple void ptr to the scsi_request struct. The addition of this simple void pointer allows one to map any and all request execution caller the facility to search for a specific operation without having to run in circles. Hunting for these details over the global device list of all HBA's is silly and one of the key reasons why there error recovery path is so painful.
Scsi_Request *req = sc_cmd->sc_request; blah_blah_t *trace = NULL;
trace = (blah_blah_t *)req->trace_ptr;
Therefore the specific transport invoking operations via the midlayer will have the ablity to track and trace any operation.
It will save everyone headaches.
Cheers,
Andre Hedrick, CTO & Founder iSCSI Software Solutions Provider http://www.PyXTechnologies.com/ --- linux/drivers/scsi/scsi.h.orig 2002-10-31 01:45:39.000000000 -0800 +++ linux/drivers/scsi/scsi.h 2002-10-31 01:46:31.000000000 -0800 @@ -667,8 +667,11 @@ unsigned short sr_sglist_len; /* size of malloc'd scatter-gather list */ unsigned sr_underflow; /* Return error if less than this amount is transferred */ + void *trace_ptr; /* capable of cmd-cmnd-error tracing */ }; +#define MODIFIED_SCSI_H + /* * FIXME(eric) - one of the great regrets that I have is that I failed to define * these structure elements as something like sc_foo instead of foo. This would
|  |