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author | 2013-05-16 10:41:04 -0700 | |
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committer | 2013-06-14 00:05:48 -0700 | |
commit | bc118fe4c4a8cfa453491ba77c0a146a6d0e73e0 (patch) | |
tree | c8d463b373a76b3f86c0c9b64d9a79a510172f91 /drivers/target | |
parent | target: Use if/else for sa_res_key conditional in emulate_pro_register() (diff) | |
download | linux-bc118fe4c4a8cfa453491ba77c0a146a6d0e73e0.tar.gz linux-bc118fe4c4a8cfa453491ba77c0a146a6d0e73e0.tar.bz2 linux-bc118fe4c4a8cfa453491ba77c0a146a6d0e73e0.zip |
target: Further refactoring of core_scsi3_emulate_pro_register()
Use bool params when appropriate.
Eliminate unneeded pr_reg_e and type variables.
Just one goto label, so rename to 'out' from 'out_put_pr_reg'.
Signed-off-by: Andy Grover <agrover@redhat.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
Diffstat (limited to 'drivers/target')
-rw-r--r-- | drivers/target/target_core_pr.c | 46 |
1 files changed, 20 insertions, 26 deletions
diff --git a/drivers/target/target_core_pr.c b/drivers/target/target_core_pr.c index 6eb0dabb4ac9..05c3f426728a 100644 --- a/drivers/target/target_core_pr.c +++ b/drivers/target/target_core_pr.c @@ -1995,18 +1995,18 @@ static int core_scsi3_update_and_write_aptpl(struct se_device *dev, bool aptpl) static sense_reason_t core_scsi3_emulate_pro_register(struct se_cmd *cmd, u64 res_key, u64 sa_res_key, - int aptpl, int all_tg_pt, int spec_i_pt, enum register_type register_type) + bool aptpl, bool all_tg_pt, bool spec_i_pt, enum register_type register_type) { struct se_session *se_sess = cmd->se_sess; struct se_device *dev = cmd->se_dev; struct se_dev_entry *se_deve; struct se_lun *se_lun = cmd->se_lun; struct se_portal_group *se_tpg; - struct t10_pr_registration *pr_reg, *pr_reg_p, *pr_reg_tmp, *pr_reg_e; + struct t10_pr_registration *pr_reg, *pr_reg_p, *pr_reg_tmp; struct t10_reservation *pr_tmpl = &dev->t10_pr; unsigned char isid_buf[PR_REG_ISID_LEN], *isid_ptr = NULL; sense_reason_t ret = TCM_NO_SENSE; - int pr_holder = 0, type; + int pr_holder = 0; if (!se_sess || !se_lun) { pr_err("SPC-3 PR: se_sess || struct se_lun is NULL!\n"); @@ -2024,8 +2024,8 @@ core_scsi3_emulate_pro_register(struct se_cmd *cmd, u64 res_key, u64 sa_res_key, /* * Follow logic from spc4r17 Section 5.7.7, Register Behaviors Table 47 */ - pr_reg_e = core_scsi3_locate_pr_reg(dev, se_sess->se_node_acl, se_sess); - if (!pr_reg_e) { + pr_reg = core_scsi3_locate_pr_reg(dev, se_sess->se_node_acl, se_sess); + if (!pr_reg) { if (res_key) { pr_warn("SPC-3 PR: Reservation Key non-zero" " for SA REGISTER, returning CONFLICT\n"); @@ -2069,29 +2069,23 @@ core_scsi3_emulate_pro_register(struct se_cmd *cmd, u64 res_key, u64 sa_res_key, return core_scsi3_update_and_write_aptpl(dev, aptpl); } - /* - * Locate the existing *pr_reg via struct se_node_acl pointers - */ - pr_reg = pr_reg_e; - type = pr_reg->pr_res_type; + /* ok, existing registration */ - if (register_type == REGISTER) { - if (res_key != pr_reg->pr_res_key) { - pr_err("SPC-3 PR REGISTER: Received" - " res_key: 0x%016Lx does not match" - " existing SA REGISTER res_key:" - " 0x%016Lx\n", res_key, - pr_reg->pr_res_key); - ret = TCM_RESERVATION_CONFLICT; - goto out_put_pr_reg; - } + if ((register_type == REGISTER) && (res_key != pr_reg->pr_res_key)) { + pr_err("SPC-3 PR REGISTER: Received" + " res_key: 0x%016Lx does not match" + " existing SA REGISTER res_key:" + " 0x%016Lx\n", res_key, + pr_reg->pr_res_key); + ret = TCM_RESERVATION_CONFLICT; + goto out; } if (spec_i_pt) { pr_err("SPC-3 PR REGISTER: SPEC_I_PT" " set on a registered nexus\n"); ret = TCM_INVALID_PARAMETER_LIST; - goto out_put_pr_reg; + goto out; } /* @@ -2103,7 +2097,7 @@ core_scsi3_emulate_pro_register(struct se_cmd *cmd, u64 res_key, u64 sa_res_key, " registration exists, but ALL_TG_PT=1 bit not" " present in received PROUT\n"); ret = TCM_INVALID_CDB_FIELD; - goto out_put_pr_reg; + goto out; } /* @@ -2132,7 +2126,7 @@ core_scsi3_emulate_pro_register(struct se_cmd *cmd, u64 res_key, u64 sa_res_key, cmd->se_dev, pr_reg); if (pr_holder < 0) { ret = TCM_RESERVATION_CONFLICT; - goto out_put_pr_reg; + goto out; } spin_lock(&pr_tmpl->registration_lock); @@ -2177,8 +2171,8 @@ core_scsi3_emulate_pro_register(struct se_cmd *cmd, u64 res_key, u64 sa_res_key, * RESERVATIONS RELEASED. */ if (pr_holder && - (type == PR_TYPE_WRITE_EXCLUSIVE_REGONLY || - type == PR_TYPE_EXCLUSIVE_ACCESS_REGONLY)) { + (pr_reg->pr_res_type == PR_TYPE_WRITE_EXCLUSIVE_REGONLY || + pr_reg->pr_res_type == PR_TYPE_EXCLUSIVE_ACCESS_REGONLY)) { list_for_each_entry(pr_reg_p, &pr_tmpl->registration_list, pr_reg_list) { @@ -2196,7 +2190,7 @@ core_scsi3_emulate_pro_register(struct se_cmd *cmd, u64 res_key, u64 sa_res_key, ret = core_scsi3_update_and_write_aptpl(dev, aptpl); -out_put_pr_reg: +out: core_scsi3_put_pr_reg(pr_reg); return ret; } |