diff options
author | James Smart <jsmart2021@gmail.com> | 2020-03-31 09:49:52 -0700 |
---|---|---|
committer | Jens Axboe <axboe@kernel.dk> | 2020-05-09 16:18:33 -0600 |
commit | fd5a5f2213048b012bc7e19e832e9ae0ec1a2c4a (patch) | |
tree | 831d521a2152c7360f5aa43ce88deee4bce959be /drivers | |
parent | eb4ee8f125157926cf36a3c275b04825f1bf8cfa (diff) | |
download | linux-fd5a5f2213048b012bc7e19e832e9ae0ec1a2c4a.tar.bz2 |
nvme-fc: Update header and host for common definitions for LS handling
Given that both host and target now generate and receive LS's create
a single table definition for LS names. Each tranport half will have
a local version of the table.
As Create Association LS is issued by both sides, and received by
both sides, create common routines to format the LS and to validate
the LS.
Convert the host side transport to use the new common Create
Association LS formatting routine.
Signed-off-by: James Smart <jsmart2021@gmail.com>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Reviewed-by: Himanshu Madhani <himanshu.madhani@oracle.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'drivers')
-rw-r--r-- | drivers/nvme/host/fc.c | 25 | ||||
-rw-r--r-- | drivers/nvme/host/fc.h | 79 |
2 files changed, 81 insertions, 23 deletions
diff --git a/drivers/nvme/host/fc.c b/drivers/nvme/host/fc.c index 0ac246603063..c069ab056202 100644 --- a/drivers/nvme/host/fc.c +++ b/drivers/nvme/host/fc.c @@ -1419,29 +1419,8 @@ nvme_fc_xmt_disconnect_assoc(struct nvme_fc_ctrl *ctrl) else lsreq->private = NULL; - discon_rqst->w0.ls_cmd = FCNVME_LS_DISCONNECT_ASSOC; - discon_rqst->desc_list_len = cpu_to_be32( - sizeof(struct fcnvme_lsdesc_assoc_id) + - sizeof(struct fcnvme_lsdesc_disconn_cmd)); - - discon_rqst->associd.desc_tag = cpu_to_be32(FCNVME_LSDESC_ASSOC_ID); - discon_rqst->associd.desc_len = - fcnvme_lsdesc_len( - sizeof(struct fcnvme_lsdesc_assoc_id)); - - discon_rqst->associd.association_id = cpu_to_be64(ctrl->association_id); - - discon_rqst->discon_cmd.desc_tag = cpu_to_be32( - FCNVME_LSDESC_DISCONN_CMD); - discon_rqst->discon_cmd.desc_len = - fcnvme_lsdesc_len( - sizeof(struct fcnvme_lsdesc_disconn_cmd)); - - lsreq->rqstaddr = discon_rqst; - lsreq->rqstlen = sizeof(*discon_rqst); - lsreq->rspaddr = discon_acc; - lsreq->rsplen = sizeof(*discon_acc); - lsreq->timeout = NVME_FC_LS_TIMEOUT_SEC; + nvmefc_fmt_lsreq_discon_assoc(lsreq, discon_rqst, discon_acc, + ctrl->association_id); ret = nvme_fc_send_ls_req_async(ctrl->rport, lsop, nvme_fc_disconnect_assoc_done); diff --git a/drivers/nvme/host/fc.h b/drivers/nvme/host/fc.h index 08fa88381d45..05ce566f2caf 100644 --- a/drivers/nvme/host/fc.h +++ b/drivers/nvme/host/fc.h @@ -17,6 +17,7 @@ */ union nvmefc_ls_requests { + struct fcnvme_ls_rqst_w0 w0; struct fcnvme_ls_cr_assoc_rqst rq_cr_assoc; struct fcnvme_ls_cr_conn_rqst rq_cr_conn; struct fcnvme_ls_disconnect_assoc_rqst rq_dis_assoc; @@ -145,4 +146,82 @@ static char *validation_errors[] = { "Bad Disconnect ACC Length", }; +#define NVME_FC_LAST_LS_CMD_VALUE FCNVME_LS_DISCONNECT_CONN + +static char *nvmefc_ls_names[] = { + "Reserved (0)", + "RJT (1)", + "ACC (2)", + "Create Association", + "Create Connection", + "Disconnect Association", + "Disconnect Connection", +}; + +static inline void +nvmefc_fmt_lsreq_discon_assoc(struct nvmefc_ls_req *lsreq, + struct fcnvme_ls_disconnect_assoc_rqst *discon_rqst, + struct fcnvme_ls_disconnect_assoc_acc *discon_acc, + u64 association_id) +{ + lsreq->rqstaddr = discon_rqst; + lsreq->rqstlen = sizeof(*discon_rqst); + lsreq->rspaddr = discon_acc; + lsreq->rsplen = sizeof(*discon_acc); + lsreq->timeout = NVME_FC_LS_TIMEOUT_SEC; + + discon_rqst->w0.ls_cmd = FCNVME_LS_DISCONNECT_ASSOC; + discon_rqst->desc_list_len = cpu_to_be32( + sizeof(struct fcnvme_lsdesc_assoc_id) + + sizeof(struct fcnvme_lsdesc_disconn_cmd)); + + discon_rqst->associd.desc_tag = cpu_to_be32(FCNVME_LSDESC_ASSOC_ID); + discon_rqst->associd.desc_len = + fcnvme_lsdesc_len( + sizeof(struct fcnvme_lsdesc_assoc_id)); + + discon_rqst->associd.association_id = cpu_to_be64(association_id); + + discon_rqst->discon_cmd.desc_tag = cpu_to_be32( + FCNVME_LSDESC_DISCONN_CMD); + discon_rqst->discon_cmd.desc_len = + fcnvme_lsdesc_len( + sizeof(struct fcnvme_lsdesc_disconn_cmd)); +} + +static inline int +nvmefc_vldt_lsreq_discon_assoc(u32 rqstlen, + struct fcnvme_ls_disconnect_assoc_rqst *rqst) +{ + int ret = 0; + + if (rqstlen < sizeof(struct fcnvme_ls_disconnect_assoc_rqst)) + ret = VERR_DISCONN_LEN; + else if (rqst->desc_list_len != + fcnvme_lsdesc_len( + sizeof(struct fcnvme_ls_disconnect_assoc_rqst))) + ret = VERR_DISCONN_RQST_LEN; + else if (rqst->associd.desc_tag != cpu_to_be32(FCNVME_LSDESC_ASSOC_ID)) + ret = VERR_ASSOC_ID; + else if (rqst->associd.desc_len != + fcnvme_lsdesc_len( + sizeof(struct fcnvme_lsdesc_assoc_id))) + ret = VERR_ASSOC_ID_LEN; + else if (rqst->discon_cmd.desc_tag != + cpu_to_be32(FCNVME_LSDESC_DISCONN_CMD)) + ret = VERR_DISCONN_CMD; + else if (rqst->discon_cmd.desc_len != + fcnvme_lsdesc_len( + sizeof(struct fcnvme_lsdesc_disconn_cmd))) + ret = VERR_DISCONN_CMD_LEN; + /* + * As the standard changed on the LS, check if old format and scope + * something other than Association (e.g. 0). + */ + else if (rqst->discon_cmd.rsvd8[0]) + ret = VERR_DISCONN_SCOPE; + + return ret; +} + #endif /* _NVME_FC_TRANSPORT_H */ |