summaryrefslogtreecommitdiff
path: root/drivers/target/target_core_spc.c
diff options
context:
space:
mode:
authorLinus Torvalds <torvalds@linux-foundation.org>2015-09-12 05:00:42 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2015-09-12 05:00:42 +0300
commit05c78081d2d8eaf04bf60946fcc53380febf3376 (patch)
tree0ba735378eb44380c916c075e4fe17d74f3889c5 /drivers/target/target_core_spc.c
parent8e78b7dc93c580c050435b0f88991c26e02166bc (diff)
parentac64a2ce509104a746321a4f9646b6750cf281eb (diff)
downloadlinux-05c78081d2d8eaf04bf60946fcc53380febf3376.tar.xz
Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending
Pull SCSI target updates from Nicholas Bellinger: "Here are the outstanding target-pending updates for v4.3-rc1. Mostly bug-fixes and minor changes this round. The fallout from the big v4.2-rc1 RCU conversion have (thus far) been minimal. The highlights this round include: - Move sense handling routines into scsi_common code (Sagi) - Return ABORTED_COMMAND sense key for PI errors (Sagi) - Add tpg_enabled_sendtargets attribute for disabled iscsi-target discovery (David) - Shrink target struct se_cmd by rearranging fields (Roland) - Drop iSCSI use of mutex around max_cmd_sn increment (Roland) - Replace iSCSI __kernel_sockaddr_storage with sockaddr_storage (Andy + Chris) - Honor fabric max_data_sg_nents I/O transfer limit (Arun + Himanshu + nab) - Fix EXTENDED_COPY >= v4.1 regression OOPsen (Alex + nab)" * 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending: (37 commits) target: use stringify.h instead of own definition target/user: Fix UFLAG_UNKNOWN_OP handling target: Remove no-op conditional target/user: Remove unused variable target: Fix max_cmd_sn increment w/o cmdsn mutex regressions target: Attach EXTENDED_COPY local I/O descriptors to xcopy_pt_sess target/qla2xxx: Honor max_data_sg_nents I/O transfer limit target/iscsi: Replace __kernel_sockaddr_storage with sockaddr_storage target/iscsi: Replace conn->login_ip with login_sockaddr target/iscsi: Keep local_ip as the actual sockaddr target/iscsi: Fix np_ip bracket issue by removing np_ip target: Drop iSCSI use of mutex around max_cmd_sn increment qla2xxx: Update tcm_qla2xxx module description to 24xx+ iscsi-target: Add tpg_enabled_sendtargets for disabled discovery drivers: target: Drop unlikely before IS_ERR(_OR_NULL) target: check DPO/FUA usage for COMPARE AND WRITE target: Shrink struct se_cmd by rearranging fields target: Remove cmd->se_ordered_id (unused except debug log lines) target: add support for START_STOP_UNIT SCSI opcode target: improve unsupported opcode message ...
Diffstat (limited to 'drivers/target/target_core_spc.c')
-rw-r--r--drivers/target/target_core_spc.c55
1 files changed, 22 insertions, 33 deletions
diff --git a/drivers/target/target_core_spc.c b/drivers/target/target_core_spc.c
index f87d4cef6d39..9413e1a949e5 100644
--- a/drivers/target/target_core_spc.c
+++ b/drivers/target/target_core_spc.c
@@ -484,8 +484,8 @@ static sense_reason_t
spc_emulate_evpd_b0(struct se_cmd *cmd, unsigned char *buf)
{
struct se_device *dev = cmd->se_dev;
- int have_tp = 0;
- int opt, min;
+ u32 mtl = 0;
+ int have_tp = 0, opt, min;
/*
* Following spc3r22 section 6.5.3 Block Limits VPD page, when
@@ -516,8 +516,15 @@ spc_emulate_evpd_b0(struct se_cmd *cmd, unsigned char *buf)
/*
* Set MAXIMUM TRANSFER LENGTH
+ *
+ * XXX: Currently assumes single PAGE_SIZE per scatterlist for fabrics
+ * enforcing maximum HW scatter-gather-list entry limit
*/
- put_unaligned_be32(dev->dev_attrib.hw_max_sectors, &buf[8]);
+ if (cmd->se_tfo->max_data_sg_nents) {
+ mtl = (cmd->se_tfo->max_data_sg_nents * PAGE_SIZE) /
+ dev->dev_attrib.block_size;
+ }
+ put_unaligned_be32(min_not_zero(mtl, dev->dev_attrib.hw_max_sectors), &buf[8]);
/*
* Set OPTIMAL TRANSFER LENGTH
@@ -768,7 +775,12 @@ static int spc_modesense_control(struct se_cmd *cmd, u8 pc, u8 *p)
if (pc == 1)
goto out;
- p[2] = 2;
+ /* GLTSD: No implicit save of log parameters */
+ p[2] = (1 << 1);
+ if (target_sense_desc_format(dev))
+ /* D_SENSE: Descriptor format sense data for 64bit sectors */
+ p[2] |= (1 << 2);
+
/*
* From spc4r23, 7.4.7 Control mode page
*
@@ -1151,6 +1163,7 @@ static sense_reason_t spc_emulate_request_sense(struct se_cmd *cmd)
unsigned char *rbuf;
u8 ua_asc = 0, ua_ascq = 0;
unsigned char buf[SE_SENSE_BUF];
+ bool desc_format = target_sense_desc_format(cmd->se_dev);
memset(buf, 0, SE_SENSE_BUF);
@@ -1164,32 +1177,11 @@ static sense_reason_t spc_emulate_request_sense(struct se_cmd *cmd)
if (!rbuf)
return TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE;
- if (!core_scsi3_ua_clear_for_request_sense(cmd, &ua_asc, &ua_ascq)) {
- /*
- * CURRENT ERROR, UNIT ATTENTION
- */
- buf[0] = 0x70;
- buf[SPC_SENSE_KEY_OFFSET] = UNIT_ATTENTION;
-
- /*
- * The Additional Sense Code (ASC) from the UNIT ATTENTION
- */
- buf[SPC_ASC_KEY_OFFSET] = ua_asc;
- buf[SPC_ASCQ_KEY_OFFSET] = ua_ascq;
- buf[7] = 0x0A;
- } else {
- /*
- * CURRENT ERROR, NO SENSE
- */
- buf[0] = 0x70;
- buf[SPC_SENSE_KEY_OFFSET] = NO_SENSE;
-
- /*
- * NO ADDITIONAL SENSE INFORMATION
- */
- buf[SPC_ASC_KEY_OFFSET] = 0x00;
- buf[7] = 0x0A;
- }
+ if (!core_scsi3_ua_clear_for_request_sense(cmd, &ua_asc, &ua_ascq))
+ scsi_build_sense_buffer(desc_format, buf, UNIT_ATTENTION,
+ ua_asc, ua_ascq);
+ else
+ scsi_build_sense_buffer(desc_format, buf, NO_SENSE, 0x0, 0x0);
memcpy(rbuf, buf, min_t(u32, sizeof(buf), cmd->data_length));
transport_kunmap_data_sg(cmd);
@@ -1418,9 +1410,6 @@ spc_parse_cdb(struct se_cmd *cmd, unsigned int *size)
}
break;
default:
- pr_warn("TARGET_CORE[%s]: Unsupported SCSI Opcode"
- " 0x%02x, sending CHECK_CONDITION.\n",
- cmd->se_tfo->get_fabric_name(), cdb[0]);
return TCM_UNSUPPORTED_SCSI_OPCODE;
}