Hi,
Le lundi 02 février 2015 à 18:21 +0100, Bart Van Assche a écrit :
> The largest LUN number that has been tested is 0xd2003fff00000000.
>
> Checked the following structure sizes with gdb:
> * sizeof(struct srp_cmd) = 48
> * sizeof(struct srp_tsk_mgmt) = 48
> * sizeof(struct srp_aer_req) = 36
>
You can use 'pahole' tool to retrieve the size (and layout) of any
data structure from a .o object file.
> The ibmvscsi changes have been compile tested only (on a PPC system).
>
The changelog lack of any information about the purpose of 64bit LUNs.
Please detail a bit why and how.
> Signed-off-by: Bart Van Assche <bart.vanassche@xxxxxxxxxxx>
> Cc: Sagi Grimberg <sagig@xxxxxxxxxxxx>
> Cc: Sebastian Parschauer <sebastian.riemer@xxxxxxxxxxxxxxxx>
> Cc: Brian King <brking@xxxxxxxxxxxxxxxxxx>
> Cc: Nathan Fontenot <nfont@xxxxxxxxxxxxxxxxxx>
> Cc: Tyrel Datwyler <tyreld@xxxxxxxxxxxxxxxxxx>
> ---
> drivers/infiniband/ulp/srp/ib_srp.c | 8 ++++----
> drivers/scsi/ibmvscsi/ibmvscsi.c | 6 +++---
> include/scsi/srp.h | 7 ++++---
> 3 files changed, 11 insertions(+), 10 deletions(-)
>
> diff --git a/drivers/infiniband/ulp/srp/ib_srp.c b/drivers/infiniband/ulp/srp/ib_srp.c
> index 0747c05..e43cb86 100644
> --- a/drivers/infiniband/ulp/srp/ib_srp.c
> +++ b/drivers/infiniband/ulp/srp/ib_srp.c
> @@ -1841,7 +1841,7 @@ static void srp_process_aer_req(struct srp_rdma_ch *ch,
> s32 delta = be32_to_cpu(req->req_lim_delta);
>
> shost_printk(KERN_ERR, target->scsi_host, PFX
> - "ignoring AER for LUN %llu\n", be64_to_cpu(req->lun));
> + "ignoring AER for LUN %llu\n", scsilun_to_int(&req->lun));
>
> if (srp_response_common(ch, delta, &rsp, sizeof(rsp)))
> shost_printk(KERN_ERR, target->scsi_host, PFX
> @@ -2033,7 +2033,7 @@ static int srp_queuecommand(struct Scsi_Host *shost, struct scsi_cmnd *scmnd)
> memset(cmd, 0, sizeof *cmd);
>
> cmd->opcode = SRP_CMD;
> - cmd->lun = cpu_to_be64((u64) scmnd->device->lun << 48);
> + int_to_scsilun(scmnd->device->lun, &cmd->lun);
> cmd->tag = tag;
> memcpy(cmd->cdb, scmnd->cmnd, scmnd->cmd_len);
>
> @@ -2448,7 +2448,7 @@ static int srp_send_tsk_mgmt(struct srp_rdma_ch *ch, u64 req_tag,
> memset(tsk_mgmt, 0, sizeof *tsk_mgmt);
>
> tsk_mgmt->opcode = SRP_TSK_MGMT;
> - tsk_mgmt->lun = cpu_to_be64((u64) lun << 48);
> + int_to_scsilun(lun, &tsk_mgmt->lun);
> tsk_mgmt->tag = req_tag | SRP_TAG_TSK_MGMT;
> tsk_mgmt->tsk_mgmt_func = func;
> tsk_mgmt->task_tag = req_tag;
> @@ -3145,7 +3145,7 @@ static ssize_t srp_create_target(struct device *dev,
> target_host->transportt = ib_srp_transport_template;
> target_host->max_channel = 0;
> target_host->max_id = 1;
> - target_host->max_lun = SRP_MAX_LUN;
> + target_host->max_lun = -1LL;
> target_host->max_cmd_len = sizeof ((struct srp_cmd *) (void *) 0L)->cdb;
>
> target = host_to_target(target_host);
> diff --git a/drivers/scsi/ibmvscsi/ibmvscsi.c b/drivers/scsi/ibmvscsi/ibmvscsi.c
> index acea5d6..6a41c36 100644
> --- a/drivers/scsi/ibmvscsi/ibmvscsi.c
> +++ b/drivers/scsi/ibmvscsi/ibmvscsi.c
> @@ -1053,7 +1053,7 @@ static int ibmvscsi_queuecommand_lck(struct scsi_cmnd *cmnd,
> memset(srp_cmd, 0x00, SRP_MAX_IU_LEN);
> srp_cmd->opcode = SRP_CMD;
> memcpy(srp_cmd->cdb, cmnd->cmnd, sizeof(srp_cmd->cdb));
> - srp_cmd->lun = cpu_to_be64(((u64)lun) << 48);
> + int_to_scsilun(lun, &srp_cmd->lun);
>
> if (!map_data_for_srp_cmd(cmnd, evt_struct, srp_cmd, hostdata->dev)) {
> if (!firmware_has_feature(FW_FEATURE_CMO))
> @@ -1529,7 +1529,7 @@ static int ibmvscsi_eh_abort_handler(struct scsi_cmnd *cmd)
> /* Set up an abort SRP command */
> memset(tsk_mgmt, 0x00, sizeof(*tsk_mgmt));
> tsk_mgmt->opcode = SRP_TSK_MGMT;
> - tsk_mgmt->lun = cpu_to_be64(((u64) lun) << 48);
> + int_to_scsilun(lun, &tsk_mgmt->lun);
> tsk_mgmt->tsk_mgmt_func = SRP_TSK_ABORT_TASK;
> tsk_mgmt->task_tag = (u64) found_evt;
>
> @@ -1652,7 +1652,7 @@ static int ibmvscsi_eh_device_reset_handler(struct scsi_cmnd *cmd)
> /* Set up a lun reset SRP command */
> memset(tsk_mgmt, 0x00, sizeof(*tsk_mgmt));
> tsk_mgmt->opcode = SRP_TSK_MGMT;
> - tsk_mgmt->lun = cpu_to_be64(((u64) lun) << 48);
> + int_to_scsilun(lun, &tsk_mgmt->lun);
> tsk_mgmt->tsk_mgmt_func = SRP_TSK_LUN_RESET;
>
> evt->sync_srp = &srp_rsp;
> diff --git a/include/scsi/srp.h b/include/scsi/srp.h
> index 1ae84db..5be834d 100644
> --- a/include/scsi/srp.h
> +++ b/include/scsi/srp.h
> @@ -42,6 +42,7 @@
> */
>
> #include <linux/types.h>
> +#include <scsi/scsi.h>
>
> enum {
> SRP_LOGIN_REQ = 0x00,
> @@ -179,7 +180,7 @@ struct srp_tsk_mgmt {
> u8 reserved1[6];
> u64 tag;
> u8 reserved2[4];
> - __be64 lun __attribute__((packed));
> + struct scsi_lun lun;
> u8 reserved3[2];
> u8 tsk_mgmt_func;
> u8 reserved4;
> @@ -200,7 +201,7 @@ struct srp_cmd {
> u8 data_in_desc_cnt;
> u64 tag;
> u8 reserved2[4];
> - __be64 lun __attribute__((packed));
> + struct scsi_lun lun;
> u8 reserved3;
> u8 task_attr;
> u8 reserved4;
> @@ -265,7 +266,7 @@ struct srp_aer_req {
> __be32 req_lim_delta;
> u64 tag;
> u32 reserved2;
> - __be64 lun;
> + struct scsi_lun lun;
> __be32 sense_data_len;
> u32 reserved3;
> u8 sense_data[0];
Regards.
--
Yann Droneaud
OPTEYA
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