diff options
Diffstat (limited to 'drivers/block/aoe/aoe.h')
| -rw-r--r-- | drivers/block/aoe/aoe.h | 16 |
1 files changed, 11 insertions, 5 deletions
diff --git a/drivers/block/aoe/aoe.h b/drivers/block/aoe/aoe.h index f6e0c03fe7b2..9e884acd75fc 100644 --- a/drivers/block/aoe/aoe.h +++ b/drivers/block/aoe/aoe.h @@ -86,8 +86,11 @@ enum { NFACTIVE = 61, TIMERTICK = HZ / 10, - MINTIMER = HZ >> 2, + RTTSCALE = 8, + RTTDSCALE = 3, MAXTIMER = HZ << 1, + RTTAVG_INIT = HZ / 4 << RTTSCALE, + RTTDEV_INIT = RTTAVG_INIT / 4, }; struct buf { @@ -127,10 +130,11 @@ struct aoetgt { struct list_head ffree; /* list of free frames */ struct aoeif ifs[NAOEIFS]; struct aoeif *ifp; /* current aoeif in use */ - ushort nout; + ushort nout; /* value of nout when skb was sent */ ushort maxout; /* current value for max outstanding */ + ushort next_cwnd; /* incr maxout after decrementing to zero */ + ushort ssthresh; /* slow start threshold */ ulong falloc; /* number of allocated frames */ - ulong lastwadj; /* last window adjustment */ int minbcnt; int wpkts, rpkts; }; @@ -142,8 +146,8 @@ struct aoedev { u16 aoeminor; u16 flags; u16 nopen; /* (bd_openers isn't available without sleeping) */ - u16 rttavg; /* round trip average of requests/responses */ - u16 mintimer; + u16 rttavg; /* scaled AoE round trip time average */ + u16 rttdev; /* scaled round trip time mean deviation */ u16 fw_ver; /* version of blade's firmware */ u16 lasttag; /* last tag sent */ u16 useme; @@ -164,6 +168,7 @@ struct aoedev { } ip; ulong maxbcnt; struct list_head factive[NFACTIVE]; /* hash of active frames */ + struct list_head rexmitq; /* deferred retransmissions */ struct aoetgt *targets[NTARGETS]; struct aoetgt **tgt; /* target in use when working */ struct aoetgt *htgt; /* target needing rexmit assistance */ @@ -196,6 +201,7 @@ void aoecmd_cfg(ushort aoemajor, unsigned char aoeminor); struct sk_buff *aoecmd_ata_rsp(struct sk_buff *); void aoecmd_cfg_rsp(struct sk_buff *); void aoecmd_sleepwork(struct work_struct *); +void aoecmd_wreset(struct aoetgt *t); void aoecmd_cleanslate(struct aoedev *); void aoecmd_exit(void); int aoecmd_init(void); |