Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/aoe-2.6

* git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/aoe-2.6:
  aoe: fix sysfs_create_file warnings
  aoe: revert printk macros
  aoe: update driver version
  aoe: remove sysfs comment
  aoe: use bio->bi_idx
  aoe: module parameter for device timeout
  aoe: zero copy write 2 of 2
  aoe: improve retransmission heuristics
  aoe: jumbo frame support 2 of 2
  aoe: clean up printks via macros
  aoe: jumbo frame support 1 of 2
  aoe: zero copy write 1 of 2
  aoe: remove unused NARGS enum
  aoe: update copyright date
  aoe: eliminate isbusy message

drivers/block/aoe/aoe.h

@@ -1,5 +1,5 @@
-/* Copyright (c) 2004 Coraid, Inc.  See COPYING for GPL terms. */
-#define VERSION "22"
+/* Copyright (c) 2006 Coraid, Inc.  See COPYING for GPL terms. */
+#define VERSION "32"
 #define AOE_MAJOR 152
 #define DEVICE_NAME "aoe"
 
@@ -65,7 +65,7 @@ struct aoe_atahdr {
 struct aoe_cfghdr {
 	__be16 bufcnt;
 	__be16 fwver;
-	unsigned char res;
+	unsigned char scnt;
 	unsigned char aoeccmd;
 	unsigned char cslen[2];
 };
@@ -78,12 +78,14 @@ enum {
 	DEVFL_GDALLOC = (1<<4),	/* need to alloc gendisk */
 	DEVFL_PAUSE = (1<<5),
 	DEVFL_NEWSIZE = (1<<6),	/* need to update dev size in block layer */
+	DEVFL_MAXBCNT = (1<<7), /* d->maxbcnt is not changeable */
+	DEVFL_KICKME = (1<<8),
 
 	BUFFL_FAIL = 1,
 };
 
 enum {
-	MAXATADATA = 1024,
+	DEFAULTBCNT = 2 * 512,	/* 2 sectors */
 	NPERSHELF = 16,		/* number of slots per shelf address */
 	FREETAG = -1,
 	MIN_BUFS = 8,
@@ -107,11 +109,9 @@ struct frame {
 	ulong waited;
 	struct buf *buf;
 	char *bufaddr;
-	int writedatalen;
-	int ndata;
-
-	/* largest possible */
-	unsigned char data[sizeof(struct aoe_hdr) + sizeof(struct aoe_atahdr)];
+	ulong bcnt;
+	sector_t lba;
+	struct sk_buff *skb;
 };
 
 struct aoedev {
@@ -121,9 +121,12 @@ 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 */
 	struct gendisk *gd;
 	request_queue_t blkq;
@@ -137,8 +140,8 @@ 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 */
-	ulong nframes;		/* number of frames below */
+	ushort lostjumbo;
+	ushort nframes;		/* number of frames below */
 	struct frame *frames;
 };
 
@@ -157,6 +160,7 @@ void aoecmd_cfg(ushort aoemajor, unsigned char aoeminor);
 void aoecmd_ata_rsp(struct sk_buff *);
 void aoecmd_cfg_rsp(struct sk_buff *);
 void aoecmd_sleepwork(void *vp);
+struct sk_buff *new_skb(ulong);
 
 int aoedev_init(void);
 void aoedev_exit(void);

drivers/block/aoe/aoeblk.c

@@ -1,4 +1,4 @@
-/* Copyright (c) 2004 Coraid, Inc.  See COPYING for GPL terms. */
+/* Copyright (c) 2006 Coraid, Inc.  See COPYING for GPL terms. */
 /*
  * aoeblk.c
  * block device routines
@@ -14,7 +14,6 @@
 
 static kmem_cache_t *buf_pool_cache;
 
-/* add attributes for our block devices in sysfs */
 static ssize_t aoedisk_show_state(struct gendisk * disk, char *page)
 {
 	struct aoedev *d = disk->private_data;
@@ -64,21 +63,26 @@ static struct disk_attribute disk_attr_fwver = {
 	.show = aoedisk_show_fwver
 };
 
-static void
+static struct attribute *aoe_attrs[] = {
+	&disk_attr_state.attr,
+	&disk_attr_mac.attr,
+	&disk_attr_netif.attr,
+	&disk_attr_fwver.attr,
+};
+
+static const struct attribute_group attr_group = {
+	.attrs = aoe_attrs,
+};
+
+static int
 aoedisk_add_sysfs(struct aoedev *d)
 {
-	sysfs_create_file(&d->gd->kobj, &disk_attr_state.attr);
-	sysfs_create_file(&d->gd->kobj, &disk_attr_mac.attr);
-	sysfs_create_file(&d->gd->kobj, &disk_attr_netif.attr);
-	sysfs_create_file(&d->gd->kobj, &disk_attr_fwver.attr);
+	return sysfs_create_group(&d->gd->kobj, &attr_group);
 }
 void
 aoedisk_rm_sysfs(struct aoedev *d)
 {
-	sysfs_remove_link(&d->gd->kobj, "state");
-	sysfs_remove_link(&d->gd->kobj, "mac");
-	sysfs_remove_link(&d->gd->kobj, "netif");
-	sysfs_remove_link(&d->gd->kobj, "firmware-version");
+	sysfs_remove_group(&d->gd->kobj, &attr_group);
 }
 
 static int
@@ -132,8 +136,7 @@ aoeblk_make_request(request_queue_t *q, struct bio *bio)
 	d = bio->bi_bdev->bd_disk->private_data;
 	buf = mempool_alloc(d->bufpool, GFP_NOIO);
 	if (buf == NULL) {
-		printk(KERN_INFO "aoe: aoeblk_make_request: buf allocation "
-			"failure\n");
+		printk(KERN_INFO "aoe: buf allocation failure\n");
 		bio_endio(bio, bio->bi_size, -ENOMEM);
 		return 0;
 	}
@@ -143,14 +146,15 @@ aoeblk_make_request(request_queue_t *q, struct bio *bio)
 	buf->bio = bio;
 	buf->resid = bio->bi_size;
 	buf->sector = bio->bi_sector;
-	buf->bv = buf->bio->bi_io_vec;
+	buf->bv = &bio->bi_io_vec[bio->bi_idx];
+	WARN_ON(buf->bv->bv_len == 0);
 	buf->bv_resid = buf->bv->bv_len;
 	buf->bufaddr = page_address(buf->bv->bv_page) + buf->bv->bv_offset;
 
 	spin_lock_irqsave(&d->lock, flags);
 
 	if ((d->flags & DEVFL_UP) == 0) {
-		printk(KERN_INFO "aoe: aoeblk_make_request: device %ld.%ld is not up\n",
+		printk(KERN_INFO "aoe: device %ld.%ld is not up\n",
 			d->aoemajor, d->aoeminor);
 		spin_unlock_irqrestore(&d->lock, flags);
 		mempool_free(buf, d->bufpool);
@@ -176,7 +180,7 @@ aoeblk_getgeo(struct block_device *bdev, struct hd_geometry *geo)
 	struct aoedev *d = bdev->bd_disk->private_data;
 
 	if ((d->flags & DEVFL_UP) == 0) {
-		printk(KERN_ERR "aoe: aoeblk_ioctl: disk not up\n");
+		printk(KERN_ERR "aoe: disk not up\n");
 		return -ENODEV;
 	}
 
@@ -203,8 +207,8 @@ aoeblk_gdalloc(void *vp)
 
 	gd = alloc_disk(AOE_PARTITIONS);
 	if (gd == NULL) {
-		printk(KERN_ERR "aoe: aoeblk_gdalloc: cannot allocate disk "
-			"structure for %ld.%ld\n", d->aoemajor, d->aoeminor);
+		printk(KERN_ERR "aoe: cannot allocate disk structure for %ld.%ld\n",
+			d->aoemajor, d->aoeminor);
 		spin_lock_irqsave(&d->lock, flags);
 		d->flags &= ~DEVFL_GDALLOC;
 		spin_unlock_irqrestore(&d->lock, flags);
@@ -213,8 +217,8 @@ aoeblk_gdalloc(void *vp)
 
 	d->bufpool = mempool_create_slab_pool(MIN_BUFS, buf_pool_cache);
 	if (d->bufpool == NULL) {
-		printk(KERN_ERR "aoe: aoeblk_gdalloc: cannot allocate bufpool "
-			"for %ld.%ld\n", d->aoemajor, d->aoeminor);
+		printk(KERN_ERR "aoe: cannot allocate bufpool for %ld.%ld\n",
+			d->aoemajor, d->aoeminor);
 		put_disk(gd);
 		spin_lock_irqsave(&d->lock, flags);
 		d->flags &= ~DEVFL_GDALLOC;

drivers/block/aoe/aoechr.c

@@ -1,4 +1,4 @@
-/* Copyright (c) 2004 Coraid, Inc.  See COPYING for GPL terms. */
+/* Copyright (c) 2006 Coraid, Inc.  See COPYING for GPL terms. */
 /*
  * aoechr.c
  * AoE character device driver
@@ -15,7 +15,6 @@ enum {
 	MINOR_INTERFACES,
 	MINOR_REVALIDATE,
 	MSGSZ = 2048,
-	NARGS = 10,
 	NMSG = 100,		/* message backlog to retain */
 };
 
@@ -56,9 +55,8 @@ static int
 interfaces(const char __user *str, size_t size)
 {
 	if (set_aoe_iflist(str, size)) {
-		printk(KERN_CRIT
-		       "%s: could not set interface list: %s\n",
-		       __FUNCTION__, "too many interfaces");
+		printk(KERN_ERR
+			"aoe: could not set interface list: too many interfaces\n");
 		return -EINVAL;
 	}
 	return 0;
@@ -81,15 +79,15 @@ revalidate(const char __user *str, size_t size)
 	/* should be e%d.%d format */
 	n = sscanf(buf, "e%d.%d", &major, &minor);
 	if (n != 2) {
-		printk(KERN_ERR "aoe: %s: invalid device specification\n",
-			__FUNCTION__);
+		printk(KERN_ERR "aoe: invalid device specification\n");
 		return -EINVAL;
 	}
 	d = aoedev_by_aoeaddr(major, minor);
 	if (!d)
 		return -EINVAL;
 
 	spin_lock_irqsave(&d->lock, flags);
+	d->flags &= ~DEVFL_MAXBCNT;
 	d->flags |= DEVFL_PAUSE;
 	spin_unlock_irqrestore(&d->lock, flags);
 	aoecmd_cfg(major, minor);
@@ -116,7 +114,7 @@ bail:		spin_unlock_irqrestore(&emsgs_lock, flags);
 
 	mp = kmalloc(n, GFP_ATOMIC);
 	if (mp == NULL) {
-		printk(KERN_CRIT "aoe: aoechr_error: allocation failure, len=%ld\n", n);
+		printk(KERN_ERR "aoe: allocation failure, len=%ld\n", n);
 		goto bail;
 	}
 
@@ -141,7 +139,7 @@ aoechr_write(struct file *filp, const char __user *buf, size_t cnt, loff_t *offp
 
 	switch ((unsigned long) filp->private_data) {
 	default:
-		printk(KERN_INFO "aoe: aoechr_write: can't write to that file.\n");
+		printk(KERN_INFO "aoe: can't write to that file.\n");
 		break;
 	case MINOR_DISCOVER:
 		ret = discover();
@@ -250,7 +248,7 @@ aoechr_init(void)
 
 	n = register_chrdev(AOE_MAJOR, "aoechr", &aoe_fops);
 	if (n < 0) { 
-		printk(KERN_ERR "aoe: aoechr_init: can't register char device\n");
+		printk(KERN_ERR "aoe: can't register char device\n");
 		return n;
 	}
 	sema_init(&emsgs_sema, 0);