From d45aca42a25c4ba7a73115fcf2283ee1a822665e Mon Sep 17 00:00:00 2001 From: Nicholas Bellinger Date: Wed, 2 Apr 2014 13:28:49 -0700 Subject: [PATCH] target/spc: Only expose PI mode page bits when supported by fabric Only expose the control modepage bit for Application Tag Owner (ATO) if the session + fabric support DIX PASS operations. Reviewed-by: Sagi Grimberg Cc: Martin K. Petersen Cc: Or Gerlitz Cc: Quinn Tran Cc: Giridhar Malavali Signed-off-by: Nicholas Bellinger --- drivers/target/target_core_spc.c | 28 +++++++++++++++++----------- 1 file changed, 17 insertions(+), 11 deletions(-) diff --git a/drivers/target/target_core_spc.c b/drivers/target/target_core_spc.c index d4c6a318d4c2..8653666612a8 100644 --- a/drivers/target/target_core_spc.c +++ b/drivers/target/target_core_spc.c @@ -769,7 +769,7 @@ spc_emulate_inquiry(struct se_cmd *cmd) return ret; } -static int spc_modesense_rwrecovery(struct se_device *dev, u8 pc, u8 *p) +static int spc_modesense_rwrecovery(struct se_cmd *cmd, u8 pc, u8 *p) { p[0] = 0x01; p[1] = 0x0a; @@ -782,8 +782,11 @@ static int spc_modesense_rwrecovery(struct se_device *dev, u8 pc, u8 *p) return 12; } -static int spc_modesense_control(struct se_device *dev, u8 pc, u8 *p) +static int spc_modesense_control(struct se_cmd *cmd, u8 pc, u8 *p) { + struct se_device *dev = cmd->se_dev; + struct se_session *sess = cmd->se_sess; + p[0] = 0x0a; p[1] = 0x0a; @@ -875,8 +878,10 @@ static int spc_modesense_control(struct se_device *dev, u8 pc, u8 *p) * type, shall not modify the contents of the LOGICAL BLOCK REFERENCE * TAG field. */ - if (dev->dev_attrib.pi_prot_type) - p[5] |= 0x80; + if (sess->sup_prot_ops & (TARGET_PROT_DIN_PASS | TARGET_PROT_DOUT_PASS)) { + if (dev->dev_attrib.pi_prot_type) + p[5] |= 0x80; + } p[8] = 0xff; p[9] = 0xff; @@ -886,8 +891,10 @@ static int spc_modesense_control(struct se_device *dev, u8 pc, u8 *p) return 12; } -static int spc_modesense_caching(struct se_device *dev, u8 pc, u8 *p) +static int spc_modesense_caching(struct se_cmd *cmd, u8 pc, u8 *p) { + struct se_device *dev = cmd->se_dev; + p[0] = 0x08; p[1] = 0x12; @@ -903,7 +910,7 @@ static int spc_modesense_caching(struct se_device *dev, u8 pc, u8 *p) return 20; } -static int spc_modesense_informational_exceptions(struct se_device *dev, u8 pc, unsigned char *p) +static int spc_modesense_informational_exceptions(struct se_cmd *cmd, u8 pc, unsigned char *p) { p[0] = 0x1c; p[1] = 0x0a; @@ -919,7 +926,7 @@ static int spc_modesense_informational_exceptions(struct se_device *dev, u8 pc, static struct { uint8_t page; uint8_t subpage; - int (*emulate)(struct se_device *, u8, unsigned char *); + int (*emulate)(struct se_cmd *, u8, unsigned char *); } modesense_handlers[] = { { .page = 0x01, .subpage = 0x00, .emulate = spc_modesense_rwrecovery }, { .page = 0x08, .subpage = 0x00, .emulate = spc_modesense_caching }, @@ -1057,7 +1064,7 @@ static sense_reason_t spc_emulate_modesense(struct se_cmd *cmd) * the only two possibilities). */ if ((modesense_handlers[i].subpage & ~subpage) == 0) { - ret = modesense_handlers[i].emulate(dev, pc, &buf[length]); + ret = modesense_handlers[i].emulate(cmd, pc, &buf[length]); if (!ten && length + ret >= 255) break; length += ret; @@ -1070,7 +1077,7 @@ static sense_reason_t spc_emulate_modesense(struct se_cmd *cmd) for (i = 0; i < ARRAY_SIZE(modesense_handlers); ++i) if (modesense_handlers[i].page == page && modesense_handlers[i].subpage == subpage) { - length += modesense_handlers[i].emulate(dev, pc, &buf[length]); + length += modesense_handlers[i].emulate(cmd, pc, &buf[length]); goto set_length; } @@ -1102,7 +1109,6 @@ static sense_reason_t spc_emulate_modesense(struct se_cmd *cmd) static sense_reason_t spc_emulate_modeselect(struct se_cmd *cmd) { - struct se_device *dev = cmd->se_dev; char *cdb = cmd->t_task_cdb; bool ten = cdb[0] == MODE_SELECT_10; int off = ten ? 8 : 4; @@ -1138,7 +1144,7 @@ static sense_reason_t spc_emulate_modeselect(struct se_cmd *cmd) if (modesense_handlers[i].page == page && modesense_handlers[i].subpage == subpage) { memset(tbuf, 0, SE_MODE_PAGE_BUF); - length = modesense_handlers[i].emulate(dev, 0, tbuf); + length = modesense_handlers[i].emulate(cmd, 0, tbuf); goto check_contents; }