diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/target/target_core_cdb.c | 95 |
1 files changed, 47 insertions, 48 deletions
diff --git a/drivers/target/target_core_cdb.c b/drivers/target/target_core_cdb.c index 09ef3f811567..1157e0c6dba6 100644 --- a/drivers/target/target_core_cdb.c +++ b/drivers/target/target_core_cdb.c @@ -114,31 +114,6 @@ target_emulate_inquiry_std(struct se_cmd *cmd) return 0; } -/* supported vital product data pages */ -static int -target_emulate_evpd_00(struct se_cmd *cmd, unsigned char *buf) -{ - buf[1] = 0x00; - if (cmd->data_length < 8) - return 0; - - buf[4] = 0x0; - /* - * Only report the INQUIRY EVPD=1 pages after a valid NAA - * Registered Extended LUN WWN has been set via ConfigFS - * during device creation/restart. - */ - if (cmd->se_dev->se_sub_dev->su_dev_flags & - SDF_EMULATED_VPD_UNIT_SERIAL) { - buf[3] = 3; - buf[5] = 0x80; - buf[6] = 0x83; - buf[7] = 0x86; - } - - return 0; -} - /* unit serial number */ static int target_emulate_evpd_80(struct se_cmd *cmd, unsigned char *buf) @@ -146,7 +121,6 @@ target_emulate_evpd_80(struct se_cmd *cmd, unsigned char *buf) struct se_device *dev = cmd->se_dev; u16 len = 0; - buf[1] = 0x80; if (dev->se_sub_dev->su_dev_flags & SDF_EMULATED_VPD_UNIT_SERIAL) { u32 unit_serial_len; @@ -190,7 +164,6 @@ target_emulate_evpd_83(struct se_cmd *cmd, unsigned char *buf) int i; u16 len = 0, id_len; - buf[1] = 0x83; off = 4; /* @@ -471,7 +444,6 @@ target_emulate_evpd_86(struct se_cmd *cmd, unsigned char *buf) if (cmd->data_length < 60) return 0; - buf[1] = 0x86; buf[2] = 0x3c; /* Set HEADSUP, ORDSUP, SIMPSUP */ buf[5] = 0x07; @@ -512,7 +484,6 @@ target_emulate_evpd_b0(struct se_cmd *cmd, unsigned char *buf) } buf[0] = dev->transport->get_device_type(dev); - buf[1] = 0xb0; buf[3] = have_tp ? 0x3c : 0x10; /* @@ -579,7 +550,6 @@ target_emulate_evpd_b2(struct se_cmd *cmd, unsigned char *buf) * defined in table 162. */ buf[0] = dev->transport->get_device_type(dev); - buf[1] = 0xb2; /* * Set Hardcoded length mentioned above for DP=0 @@ -618,11 +588,51 @@ target_emulate_evpd_b2(struct se_cmd *cmd, unsigned char *buf) } static int +target_emulate_evpd_00(struct se_cmd *cmd, unsigned char *buf); + +static struct { + uint8_t page; + int (*emulate)(struct se_cmd *, unsigned char *); +} evpd_handlers[] = { + { .page = 0x00, .emulate = target_emulate_evpd_00 }, + { .page = 0x80, .emulate = target_emulate_evpd_80 }, + { .page = 0x83, .emulate = target_emulate_evpd_83 }, + { .page = 0x86, .emulate = target_emulate_evpd_86 }, + { .page = 0xb0, .emulate = target_emulate_evpd_b0 }, + { .page = 0xb2, .emulate = target_emulate_evpd_b2 }, +}; + +/* supported vital product data pages */ +static int +target_emulate_evpd_00(struct se_cmd *cmd, unsigned char *buf) +{ + int p; + + if (cmd->data_length < 8) + return 0; + /* + * Only report the INQUIRY EVPD=1 pages after a valid NAA + * Registered Extended LUN WWN has been set via ConfigFS + * during device creation/restart. + */ + if (cmd->se_dev->se_sub_dev->su_dev_flags & + SDF_EMULATED_VPD_UNIT_SERIAL) { + buf[3] = ARRAY_SIZE(evpd_handlers); + for (p = 0; p < min_t(int, ARRAY_SIZE(evpd_handlers), + cmd->data_length - 4); ++p) + buf[p + 4] = evpd_handlers[p].page; + } + + return 0; +} + +static int target_emulate_inquiry(struct se_cmd *cmd) { struct se_device *dev = cmd->se_dev; unsigned char *buf = cmd->t_task_buf; unsigned char *cdb = cmd->t_task_cdb; + int p; if (!(cdb[1] & 0x1)) return target_emulate_inquiry_std(cmd); @@ -641,25 +651,14 @@ target_emulate_inquiry(struct se_cmd *cmd) } buf[0] = dev->transport->get_device_type(dev); - switch (cdb[2]) { - case 0x00: - return target_emulate_evpd_00(cmd, buf); - case 0x80: - return target_emulate_evpd_80(cmd, buf); - case 0x83: - return target_emulate_evpd_83(cmd, buf); - case 0x86: - return target_emulate_evpd_86(cmd, buf); - case 0xb0: - return target_emulate_evpd_b0(cmd, buf); - case 0xb2: - return target_emulate_evpd_b2(cmd, buf); - default: - printk(KERN_ERR "Unknown VPD Code: 0x%02x\n", cdb[2]); - return -EINVAL; - } + for (p = 0; p < ARRAY_SIZE(evpd_handlers); ++p) + if (cdb[2] == evpd_handlers[p].page) { + buf[1] = cdb[2]; + return evpd_handlers[p].emulate(cmd, buf); + } - return 0; + printk(KERN_ERR "Unknown VPD Code: 0x%02x\n", cdb[2]); + return -EINVAL; } static int |