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| author | Andy Grover <agrover@redhat.com> | 2015-05-19 14:44:38 -0700 |
|---|---|---|
| committer | Nicholas Bellinger <nab@linux-iscsi.org> | 2015-05-30 19:57:33 -0700 |
| commit | cf87edc6022d1fe7efa6b8ce1a99f2ef6a1b27f9 (patch) | |
| tree | f2993803793d54c8c0e3548f48fd157e95777ee3 /Documentation/target | |
| parent | 5a7125c64def3b21f8147eca8b54949a60963942 (diff) | |
| download | lwn-cf87edc6022d1fe7efa6b8ce1a99f2ef6a1b27f9.tar.gz lwn-cf87edc6022d1fe7efa6b8ce1a99f2ef6a1b27f9.zip | |
target/user: Update example code for new ABI requirements
We now require that the userspace handler set a bit if the command is not
handled.
Update calls to tcmu_hdr_get_op for v2.
Signed-off-by: Andy Grover <agrover@redhat.com>
Reviewed-by: Ilias Tsitsimpis <iliastsi@arrikto.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
Diffstat (limited to 'Documentation/target')
| -rw-r--r-- | Documentation/target/tcmu-design.txt | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/Documentation/target/tcmu-design.txt b/Documentation/target/tcmu-design.txt index c80bf1ed8981..b495108c433c 100644 --- a/Documentation/target/tcmu-design.txt +++ b/Documentation/target/tcmu-design.txt @@ -324,7 +324,7 @@ int handle_device_events(int fd, void *map) /* Process events from cmd ring until we catch up with cmd_head */ while (ent != (void *)mb + mb->cmdr_off + mb->cmd_head) { - if (tcmu_hdr_get_op(&ent->hdr) == TCMU_OP_CMD) { + if (tcmu_hdr_get_op(ent->hdr.len_op) == TCMU_OP_CMD) { uint8_t *cdb = (void *)mb + ent->req.cdb_off; bool success = true; @@ -339,8 +339,12 @@ int handle_device_events(int fd, void *map) ent->rsp.scsi_status = SCSI_CHECK_CONDITION; } } + else if (tcmu_hdr_get_op(ent->hdr.len_op) != TCMU_OP_PAD) { + /* Tell the kernel we didn't handle unknown opcodes */ + ent->hdr.uflags |= TCMU_UFLAG_UNKNOWN_OP; + } else { - /* Do nothing for PAD entries */ + /* Do nothing for PAD entries except update cmd_tail */ } /* update cmd_tail */ |