diff options
| -rw-r--r-- | drivers/infiniband/ulp/srp/ib_srp.c | 44 | ||||
| -rw-r--r-- | drivers/infiniband/ulp/srp/ib_srp.h | 1 |
2 files changed, 42 insertions, 3 deletions
diff --git a/drivers/infiniband/ulp/srp/ib_srp.c b/drivers/infiniband/ulp/srp/ib_srp.c index f1401e1f2f97..e7fa8b680cb6 100644 --- a/drivers/infiniband/ulp/srp/ib_srp.c +++ b/drivers/infiniband/ulp/srp/ib_srp.c @@ -321,7 +321,29 @@ static int srp_send_req(struct srp_target_port *target) req->priv.req_it_iu_len = cpu_to_be32(srp_max_iu_len); req->priv.req_buf_fmt = cpu_to_be16(SRP_BUF_FORMAT_DIRECT | SRP_BUF_FORMAT_INDIRECT); - memcpy(req->priv.initiator_port_id, target->srp_host->initiator_port_id, 16); + /* + * In the published SRP specification (draft rev. 16a), the + * port identifier format is 8 bytes of ID extension followed + * by 8 bytes of GUID. Older drafts put the two halves in the + * opposite order, so that the GUID comes first. + * + * Targets conforming to these obsolete drafts can be + * recognized by the I/O Class they report. + */ + if (target->io_class == SRP_REV10_IB_IO_CLASS) { + memcpy(req->priv.initiator_port_id, + target->srp_host->initiator_port_id + 8, 8); + memcpy(req->priv.initiator_port_id + 8, + target->srp_host->initiator_port_id, 8); + memcpy(req->priv.target_port_id, &target->ioc_guid, 8); + memcpy(req->priv.target_port_id + 8, &target->id_ext, 8); + } else { + memcpy(req->priv.initiator_port_id, + target->srp_host->initiator_port_id, 16); + memcpy(req->priv.target_port_id, &target->id_ext, 8); + memcpy(req->priv.target_port_id + 8, &target->ioc_guid, 8); + } + /* * Topspin/Cisco SRP targets will reject our login unless we * zero out the first 8 bytes of our initiator port ID. The @@ -334,8 +356,6 @@ static int srp_send_req(struct srp_target_port *target) (unsigned long long) be64_to_cpu(target->ioc_guid)); memset(req->priv.initiator_port_id, 0, 8); } - memcpy(req->priv.target_port_id, &target->id_ext, 8); - memcpy(req->priv.target_port_id + 8, &target->ioc_guid, 8); status = ib_send_cm_req(target->cm_id, &req->param); @@ -1511,6 +1531,7 @@ enum { SRP_OPT_SERVICE_ID = 1 << 4, SRP_OPT_MAX_SECT = 1 << 5, SRP_OPT_MAX_CMD_PER_LUN = 1 << 6, + SRP_OPT_IO_CLASS = 1 << 7, SRP_OPT_ALL = (SRP_OPT_ID_EXT | SRP_OPT_IOC_GUID | SRP_OPT_DGID | @@ -1526,6 +1547,7 @@ static match_table_t srp_opt_tokens = { { SRP_OPT_SERVICE_ID, "service_id=%s" }, { SRP_OPT_MAX_SECT, "max_sect=%d" }, { SRP_OPT_MAX_CMD_PER_LUN, "max_cmd_per_lun=%d" }, + { SRP_OPT_IO_CLASS, "io_class=%x" }, { SRP_OPT_ERR, NULL } }; @@ -1610,6 +1632,21 @@ static int srp_parse_options(const char *buf, struct srp_target_port *target) target->scsi_host->cmd_per_lun = min(token, SRP_SQ_SIZE); break; + case SRP_OPT_IO_CLASS: + if (match_hex(args, &token)) { + printk(KERN_WARNING PFX "bad IO class parameter '%s' \n", p); + goto out; + } + if (token != SRP_REV10_IB_IO_CLASS && + token != SRP_REV16A_IB_IO_CLASS) { + printk(KERN_WARNING PFX "unknown IO class parameter value" + " %x specified (use %x or %x).\n", + token, SRP_REV10_IB_IO_CLASS, SRP_REV16A_IB_IO_CLASS); + goto out; + } + target->io_class = token; + break; + default: printk(KERN_WARNING PFX "unknown parameter or missing value " "'%s' in target creation request\n", p); @@ -1652,6 +1689,7 @@ static ssize_t srp_create_target(struct class_device *class_dev, target = host_to_target(target_host); memset(target, 0, sizeof *target); + target->io_class = SRP_REV16A_IB_IO_CLASS; target->scsi_host = target_host; target->srp_host = host; diff --git a/drivers/infiniband/ulp/srp/ib_srp.h b/drivers/infiniband/ulp/srp/ib_srp.h index ad45e4856e1c..5b581fb8eb0d 100644 --- a/drivers/infiniband/ulp/srp/ib_srp.h +++ b/drivers/infiniband/ulp/srp/ib_srp.h @@ -122,6 +122,7 @@ struct srp_target_port { __be64 id_ext; __be64 ioc_guid; __be64 service_id; + u16 io_class; struct srp_host *srp_host; struct Scsi_Host *scsi_host; char target_name[32]; |