diff options
| author | Hannes Reinecke <hare@suse.de> | 2013-12-17 09:18:49 +0100 |
|---|---|---|
| committer | Nicholas Bellinger <nab@linux-iscsi.org> | 2014-01-10 06:48:17 +0100 |
| commit | c66094bf325ee406b92298d73089ee25484a0263 (patch) | |
| tree | cfa2fb231dbd3e120ad2d75f96c250c24233978a /drivers/target/target_core_spc.c | |
| parent | target_core_spc: Include target device descriptor in VPD page 83 (diff) | |
| download | linux-c66094bf325ee406b92298d73089ee25484a0263.tar.xz linux-c66094bf325ee406b92298d73089ee25484a0263.zip | |
target_core_alua: Referrals infrastructure
Add infrastructure for referrals.
v2 changes:
- Fix unsigned long long division in core_alua_state_lba_dependent on
32-bit (Fengguang + Chen + Hannes)
- Fix compile warning in core_alua_state_lba_dependent (nab)
- Convert segment_* + sectors variables in core_alua_state_lba_dependent
to u64 (Hannes)
Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
Diffstat (limited to 'drivers/target/target_core_spc.c')
| -rw-r--r-- | drivers/target/target_core_spc.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/drivers/target/target_core_spc.c b/drivers/target/target_core_spc.c index 39054d9029f3..f9889fd82994 100644 --- a/drivers/target/target_core_spc.c +++ b/drivers/target/target_core_spc.c @@ -476,6 +476,11 @@ spc_emulate_evpd_86(struct se_cmd *cmd, unsigned char *buf) /* If WriteCache emulation is enabled, set V_SUP */ if (spc_check_dev_wce(dev)) buf[6] = 0x01; + /* If an LBA map is present set R_SUP */ + spin_lock(&cmd->se_dev->t10_alua.lba_map_lock); + if (!list_empty(&dev->t10_alua.lba_map_list)) + buf[8] = 0x10; + spin_unlock(&cmd->se_dev->t10_alua.lba_map_lock); return 0; } @@ -634,6 +639,20 @@ spc_emulate_evpd_b2(struct se_cmd *cmd, unsigned char *buf) return 0; } +/* Referrals VPD page */ +static sense_reason_t +spc_emulate_evpd_b3(struct se_cmd *cmd, unsigned char *buf) +{ + struct se_device *dev = cmd->se_dev; + + buf[0] = dev->transport->get_device_type(dev); + buf[3] = 0x0c; + put_unaligned_be32(dev->t10_alua.lba_map_segment_size, &buf[8]); + put_unaligned_be32(dev->t10_alua.lba_map_segment_size, &buf[12]); + + return 0; +} + static sense_reason_t spc_emulate_evpd_00(struct se_cmd *cmd, unsigned char *buf); @@ -648,6 +667,7 @@ static struct { { .page = 0xb0, .emulate = spc_emulate_evpd_b0 }, { .page = 0xb1, .emulate = spc_emulate_evpd_b1 }, { .page = 0xb2, .emulate = spc_emulate_evpd_b2 }, + { .page = 0xb3, .emulate = spc_emulate_evpd_b3 }, }; /* supported vital product data pages */ |