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nvmet-fc: bring Disconnect into compliance with FC-NVME spec

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The FC-NVME spec, when finally approved, modified the disconnect LS
such that the only scope available is the association.

Rework the Disconnect LS processing to be in accordance with the
change.

Signed-off-by: Nigel Kirkland <nigel.kirkland@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Reviewed-by: Ewan D. Milne <emilne@redhat.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
James Smart 2019-03-13 18:55:04 +01:00 committed by Jens Axboe
parent 0191e7405b
commit 404ec31df4
1 changed files with 2 additions and 31 deletions
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33
drivers/nvme/target/fc.c
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@ -1502,10 +1502,8 @@ nvmet_fc_ls_disconnect(struct nvmet_fc_tgtport *tgtport,
(struct fcnvme_ls_disconnect_rqst *)iod->rqstbuf; (struct fcnvme_ls_disconnect_rqst *)iod->rqstbuf;
struct fcnvme_ls_disconnect_acc *acc = struct fcnvme_ls_disconnect_acc *acc =
(struct fcnvme_ls_disconnect_acc *)iod->rspbuf; (struct fcnvme_ls_disconnect_acc *)iod->rspbuf;
struct nvmet_fc_tgt_queue *queue = NULL;
struct nvmet_fc_tgt_assoc *assoc; struct nvmet_fc_tgt_assoc *assoc;
int ret = 0; int ret = 0;
bool del_assoc = false;
memset(acc, 0, sizeof(*acc)); memset(acc, 0, sizeof(*acc));
@ -1536,18 +1534,7 @@ nvmet_fc_ls_disconnect(struct nvmet_fc_tgtport *tgtport,
assoc = nvmet_fc_find_target_assoc(tgtport, assoc = nvmet_fc_find_target_assoc(tgtport,
be64_to_cpu(rqst->associd.association_id)); be64_to_cpu(rqst->associd.association_id));
iod->assoc = assoc; iod->assoc = assoc;
if (assoc) { if (!assoc)
if (rqst->discon_cmd.scope ==
FCNVME_DISCONN_CONNECTION) {
queue = nvmet_fc_find_target_queue(tgtport,
be64_to_cpu(
rqst->discon_cmd.id));
if (!queue) {
nvmet_fc_tgt_a_put(assoc);
ret = VERR_NO_CONN;
}
}
} else
ret = VERR_NO_ASSOC; ret = VERR_NO_ASSOC;
} }
@ -1575,26 +1562,10 @@ nvmet_fc_ls_disconnect(struct nvmet_fc_tgtport *tgtport,
sizeof(struct fcnvme_ls_disconnect_acc)), sizeof(struct fcnvme_ls_disconnect_acc)),
FCNVME_LS_DISCONNECT); FCNVME_LS_DISCONNECT);
/* are we to delete a Connection ID (queue) */
if (queue) {
int qid = queue->qid;
nvmet_fc_delete_target_queue(queue);
/* release the get taken by find_target_queue */
nvmet_fc_tgt_q_put(queue);
/* tear association down if io queue terminated */
if (!qid)
del_assoc = true;
}
/* release get taken in nvmet_fc_find_target_assoc */ /* release get taken in nvmet_fc_find_target_assoc */
nvmet_fc_tgt_a_put(iod->assoc); nvmet_fc_tgt_a_put(iod->assoc);
if (del_assoc) nvmet_fc_delete_target_assoc(iod->assoc);
nvmet_fc_delete_target_assoc(iod->assoc);
} }