aoe: improve retransmission heuristics

Add a dynamic minimum timer for better retransmission behavior.

Signed-off-by: "Ed L. Cashin" <ecashin@coraid.com>
Acked-by: Alan Cox <alan@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 4 insertions, 3 deletions

diff --git a/drivers/block/aoe/aoe.h b/drivers/block/aoe/aoe.h
index 4d79f1eaf708..7b1121748633 100644
--- a/drivers/block/aoe/aoe.h
+++ b/drivers/block/aoe/aoe.h
@@ -125,8 +125,10 @@ struct aoedev {
         ulong sysminor;
         ulong aoemajor;
         ulong aoeminor;
-        ulong nopen;            /* (bd_openers isn't available without sleeping) */
-        ulong rttavg;           /* round trip average of requests/responses */
+        u16 nopen;              /* (bd_openers isn't available without sleeping) */
+        u16 lasttag;            /* last tag sent */
+        u16 rttavg;             /* round trip average of requests/responses */
+        u16 mintimer;
         u16 fw_ver;             /* version of blade's firmware */
         u16 maxbcnt;
         struct work_struct work;/* disk create work struct */
@@ -142,7 +144,6 @@ struct aoedev {
         mempool_t *bufpool;     /* for deadlock-free Buf allocation */
         struct list_head bufq;  /* queue of bios to work on */
         struct buf *inprocess;  /* the one we're currently working on */
-        ulong lasttag;          /* last tag sent */
         ushort lostjumbo;
         ushort nframes;         /* number of frames below */
         struct frame *frames;