NVMe: Abort timed out commands

Send nvme abort command to io requests that have timed out on an
initialized device. If the command is not returned after another timeout,
schedule the controller for reset.

Signed-off-by: Keith Busch <keith.busch@intel.com>
[fix endianness issues]
Signed-off-by: Matthew Wilcox <matthew.r.wilcox@intel.com>

1 files changed, 11 insertions, 0 deletions

diff --git a/include/uapi/linux/nvme.h b/include/uapi/linux/nvme.h
index 989c04e0c563..e5ab62201119 100644
--- a/include/uapi/linux/nvme.h
+++ b/include/uapi/linux/nvme.h
@@ -350,6 +350,16 @@ struct nvme_delete_queue {
         __u32                   rsvd11[5];
 };
 
+struct nvme_abort_cmd {
+        __u8                    opcode;
+        __u8                    flags;
+        __u16                   command_id;
+        __u32                   rsvd1[9];
+        __le16                  sqid;
+        __u16                   cid;
+        __u32                   rsvd11[5];
+};
+
 struct nvme_download_firmware {
         __u8                    opcode;
         __u8                    flags;
@@ -384,6 +394,7 @@ struct nvme_command {
                 struct nvme_download_firmware dlfw;
                 struct nvme_format_cmd format;
                 struct nvme_dsm_cmd dsm;
+                struct nvme_abort_cmd abort;
         };
 };