diff options
| author | James Smart <jsmart2021@gmail.com> | 2017-11-16 02:00:21 +0100 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2017-11-16 19:27:04 +0100 |
| commit | cce75291ffd82eb5bac56b051f46f89e8c0d2918 (patch) | |
| tree | 460b671eef197c1510f0b8c96923573e26a08651 /drivers | |
| parent | block: wake up all tasks blocked in get_request() (diff) | |
| download | linux-cce75291ffd82eb5bac56b051f46f89e8c0d2918.tar.xz linux-cce75291ffd82eb5bac56b051f46f89e8c0d2918.zip | |
nvmet_fc: fix better length checking
Reorganize nvmet_fc_handle_fcp_rqst() so that the nvmet req.transfer_len
field is set after the call nvmet_req_init(). An update to nvmet now
has nvmet_req_init() clearing the field, thus the fc transport was losing
the value.
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: James Smart <james.smart@broadcom.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/nvme/target/fc.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/nvme/target/fc.c b/drivers/nvme/target/fc.c index 739b8feadc7d..664d3013f68f 100644 --- a/drivers/nvme/target/fc.c +++ b/drivers/nvme/target/fc.c @@ -2144,6 +2144,7 @@ nvmet_fc_handle_fcp_rqst(struct nvmet_fc_tgtport *tgtport, struct nvmet_fc_fcp_iod *fod) { struct nvme_fc_cmd_iu *cmdiu = &fod->cmdiubuf; + u32 xfrlen = be32_to_cpu(cmdiu->data_len); int ret; /* @@ -2157,7 +2158,6 @@ nvmet_fc_handle_fcp_rqst(struct nvmet_fc_tgtport *tgtport, fod->fcpreq->done = nvmet_fc_xmt_fcp_op_done; - fod->req.transfer_len = be32_to_cpu(cmdiu->data_len); if (cmdiu->flags & FCNVME_CMD_FLAGS_WRITE) { fod->io_dir = NVMET_FCP_WRITE; if (!nvme_is_write(&cmdiu->sqe)) @@ -2168,7 +2168,7 @@ nvmet_fc_handle_fcp_rqst(struct nvmet_fc_tgtport *tgtport, goto transport_error; } else { fod->io_dir = NVMET_FCP_NODATA; - if (fod->req.transfer_len) + if (xfrlen) goto transport_error; } @@ -2192,6 +2192,8 @@ nvmet_fc_handle_fcp_rqst(struct nvmet_fc_tgtport *tgtport, return; } + fod->req.transfer_len = xfrlen; + /* keep a running counter of tail position */ atomic_inc(&fod->queue->sqtail); |