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| author |   Sagi Grimberg <sagig@mellanox.com> | 2015-04-19 20:27:19 +0300 |
|---|---|---|
| committer |   Nicholas Bellinger <nab@linux-iscsi.org> | 2015-05-30 22:41:41 -0700 |
| commit | f75b6fae1a1d0a79dcbb9cbaed1d06bf3fe57a3c (patch) | |
| tree | b255e230aa10d9ad6a5e6d9944d7f82eb78bf662 /drivers/target/target_core_file.c | |
| parent | iser-target: Fix error path in isert_create_pi_ctx() (diff) | |
| download | linux-dev-f75b6fae1a1d0a79dcbb9cbaed1d06bf3fe57a3c.tar.xz linux-dev-f75b6fae1a1d0a79dcbb9cbaed1d06bf3fe57a3c.zip | |
target: Merge sbc_verify_dif_read|write
Instead of providing DIF verify routines for read/write
that are almost identical and conditionally copy protection
information, just let the caller do the right thing.
Have a single sbc_dif_verify that handles an sgl (that
does NOT copy any data) and a protection information copy
routine used by rd_mcp and fileio backend.
In the WRITE case, call sbc_dif_verify with cmd->t_prot_sg
and then do the copy from it to local sgl (assuming the verify
succeeded of course). In the READ case, call sbc_dif_verify
with the local sgl and if it succeeds, copy it to t_prot_sg (or
not if we are stripping it).
(Fix apply breakage from commit c836777 - nab)
Tested-by: Akinobu Mita <akinobu.mita@gmail.com>
Signed-off-by: Sagi Grimberg <sagig@mellanox.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
Diffstat (limited to 'drivers/target/target_core_file.c')
| -rw-r--r-- | drivers/target/target_core_file.c | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/drivers/target/target_core_file.c b/drivers/target/target_core_file.c index 3f27bfd816d8..deec7560f835 100644 --- a/drivers/target/target_core_file.c +++ b/drivers/target/target_core_file.c @@ -643,13 +643,14 @@ fd_execute_rw(struct se_cmd *cmd, struct scatterlist *sgl, u32 sgl_nents, if (ret > 0 && cmd->prot_type && dev->dev_attrib.pi_prot_type) { u32 sectors = cmd->data_length / dev->dev_attrib.block_size; - rc = sbc_dif_verify_read(cmd, cmd->t_task_lba, sectors, - 0, fd_prot.prot_sg, 0); + rc = sbc_dif_verify(cmd, cmd->t_task_lba, sectors, + 0, fd_prot.prot_sg, 0); if (rc) { kfree(fd_prot.prot_sg); kfree(fd_prot.prot_buf); return rc; } + sbc_dif_copy_prot(cmd, sectors, true, fd_prot.prot_sg, 0); kfree(fd_prot.prot_sg); kfree(fd_prot.prot_buf); } @@ -663,13 +664,14 @@ fd_execute_rw(struct se_cmd *cmd, struct scatterlist *sgl, u32 sgl_nents, if (ret < 0) return TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE; - rc = sbc_dif_verify_write(cmd, cmd->t_task_lba, sectors, - 0, fd_prot.prot_sg, 0); + rc = sbc_dif_verify(cmd, cmd->t_task_lba, sectors, + 0, cmd->t_prot_sg, 0); if (rc) { kfree(fd_prot.prot_sg); kfree(fd_prot.prot_buf); return rc; } + sbc_dif_copy_prot(cmd, sectors, false, fd_prot.prot_sg, 0); } ret = fd_do_rw(cmd, sgl, sgl_nents, 1); |