diff options
Diffstat (limited to 'drivers/block/aoe')
| -rw-r--r-- | drivers/block/aoe/aoe.h | 14 | ||||
| -rw-r--r-- | drivers/block/aoe/aoeblk.c | 26 | ||||
| -rw-r--r-- | drivers/block/aoe/aoechr.c | 37 | ||||
| -rw-r--r-- | drivers/block/aoe/aoecmd.c | 187 | ||||
| -rw-r--r-- | drivers/block/aoe/aoedev.c | 69 | ||||
| -rw-r--r-- | drivers/block/aoe/aoemain.c | 4 | ||||
| -rw-r--r-- | drivers/block/aoe/aoenet.c | 22 |
7 files changed, 236 insertions, 123 deletions
diff --git a/drivers/block/aoe/aoe.h b/drivers/block/aoe/aoe.h index 881c48d941b7..6eebcb7be97e 100644 --- a/drivers/block/aoe/aoe.h +++ b/drivers/block/aoe/aoe.h @@ -1,5 +1,5 @@ /* Copyright (c) 2004 Coraid, Inc. See COPYING for GPL terms. */ -#define VERSION "14" +#define VERSION "22" #define AOE_MAJOR 152 #define DEVICE_NAME "aoe" @@ -75,8 +75,9 @@ enum { DEVFL_TKILL = (1<<1), /* flag for timer to know when to kill self */ DEVFL_EXT = (1<<2), /* device accepts lba48 commands */ DEVFL_CLOSEWAIT = (1<<3), /* device is waiting for all closes to revalidate */ - DEVFL_WC_UPDATE = (1<<4), /* this device needs to update write cache status */ - DEVFL_WORKON = (1<<4), + DEVFL_GDALLOC = (1<<4), /* need to alloc gendisk */ + DEVFL_PAUSE = (1<<5), + DEVFL_NEWSIZE = (1<<6), /* need to update dev size in block layer */ BUFFL_FAIL = 1, }; @@ -152,16 +153,17 @@ void aoechr_exit(void); void aoechr_error(char *); void aoecmd_work(struct aoedev *d); -void aoecmd_cfg(ushort, unsigned char); +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); int aoedev_init(void); void aoedev_exit(void); struct aoedev *aoedev_by_aoeaddr(int maj, int min); +struct aoedev *aoedev_by_sysminor_m(ulong sysminor, ulong bufcnt); void aoedev_downdev(struct aoedev *d); -struct aoedev *aoedev_set(ulong, unsigned char *, struct net_device *, ulong); -int aoedev_busy(void); +int aoedev_isbusy(struct aoedev *d); int aoenet_init(void); void aoenet_exit(void); diff --git a/drivers/block/aoe/aoeblk.c b/drivers/block/aoe/aoeblk.c index c05ee8bffd97..393b86a3dbf8 100644 --- a/drivers/block/aoe/aoeblk.c +++ b/drivers/block/aoe/aoeblk.c @@ -22,7 +22,9 @@ static ssize_t aoedisk_show_state(struct gendisk * disk, char *page) return snprintf(page, PAGE_SIZE, "%s%s\n", (d->flags & DEVFL_UP) ? "up" : "down", - (d->flags & DEVFL_CLOSEWAIT) ? ",closewait" : ""); + (d->flags & DEVFL_PAUSE) ? ",paused" : + (d->nopen && !(d->flags & DEVFL_UP)) ? ",closewait" : ""); + /* I'd rather see nopen exported so we can ditch closewait */ } static ssize_t aoedisk_show_mac(struct gendisk * disk, char *page) { @@ -107,8 +109,7 @@ aoeblk_release(struct inode *inode, struct file *filp) spin_lock_irqsave(&d->lock, flags); - if (--d->nopen == 0 && (d->flags & DEVFL_CLOSEWAIT)) { - d->flags &= ~DEVFL_CLOSEWAIT; + if (--d->nopen == 0) { spin_unlock_irqrestore(&d->lock, flags); aoecmd_cfg(d->aoemajor, d->aoeminor); return 0; @@ -158,14 +159,14 @@ aoeblk_make_request(request_queue_t *q, struct bio *bio) } list_add_tail(&buf->bufs, &d->bufq); - aoecmd_work(d); + aoecmd_work(d); sl = d->sendq_hd; d->sendq_hd = d->sendq_tl = NULL; spin_unlock_irqrestore(&d->lock, flags); - aoenet_xmit(sl); + return 0; } @@ -205,20 +206,18 @@ aoeblk_gdalloc(void *vp) printk(KERN_ERR "aoe: aoeblk_gdalloc: cannot allocate disk " "structure for %ld.%ld\n", d->aoemajor, d->aoeminor); spin_lock_irqsave(&d->lock, flags); - d->flags &= ~DEVFL_WORKON; + d->flags &= ~DEVFL_GDALLOC; spin_unlock_irqrestore(&d->lock, flags); return; } - d->bufpool = mempool_create(MIN_BUFS, - mempool_alloc_slab, mempool_free_slab, - buf_pool_cache); + 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); put_disk(gd); spin_lock_irqsave(&d->lock, flags); - d->flags &= ~DEVFL_WORKON; + d->flags &= ~DEVFL_GDALLOC; spin_unlock_irqrestore(&d->lock, flags); return; } @@ -235,18 +234,13 @@ aoeblk_gdalloc(void *vp) gd->queue = &d->blkq; d->gd = gd; - d->flags &= ~DEVFL_WORKON; + d->flags &= ~DEVFL_GDALLOC; d->flags |= DEVFL_UP; spin_unlock_irqrestore(&d->lock, flags); add_disk(gd); aoedisk_add_sysfs(d); - - printk(KERN_INFO "aoe: %012llx e%lu.%lu v%04x has %llu " - "sectors\n", (unsigned long long)mac_addr(d->addr), - d->aoemajor, d->aoeminor, - d->fw_ver, (long long)d->ssize); } void diff --git a/drivers/block/aoe/aoechr.c b/drivers/block/aoe/aoechr.c index 41ae0ede619a..5327f553b4f5 100644 --- a/drivers/block/aoe/aoechr.c +++ b/drivers/block/aoe/aoechr.c @@ -13,6 +13,7 @@ enum { MINOR_ERR = 2, MINOR_DISCOVER, MINOR_INTERFACES, + MINOR_REVALIDATE, MSGSZ = 2048, NARGS = 10, NMSG = 100, /* message backlog to retain */ @@ -41,6 +42,7 @@ static struct aoe_chardev chardevs[] = { { MINOR_ERR, "err" }, { MINOR_DISCOVER, "discover" }, { MINOR_INTERFACES, "interfaces" }, + { MINOR_REVALIDATE, "revalidate" }, }; static int @@ -62,6 +64,39 @@ interfaces(const char __user *str, size_t size) return 0; } +static int +revalidate(const char __user *str, size_t size) +{ + int major, minor, n; + ulong flags; + struct aoedev *d; + char buf[16]; + + if (size >= sizeof buf) + return -EINVAL; + buf[sizeof buf - 1] = '\0'; + if (copy_from_user(buf, str, size)) + return -EFAULT; + + /* 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__); + return -EINVAL; + } + d = aoedev_by_aoeaddr(major, minor); + if (!d) + return -EINVAL; + + spin_lock_irqsave(&d->lock, flags); + d->flags |= DEVFL_PAUSE; + spin_unlock_irqrestore(&d->lock, flags); + aoecmd_cfg(major, minor); + + return 0; +} + void aoechr_error(char *msg) { @@ -114,6 +149,8 @@ aoechr_write(struct file *filp, const char __user *buf, size_t cnt, loff_t *offp case MINOR_INTERFACES: ret = interfaces(buf, cnt); break; + case MINOR_REVALIDATE: + ret = revalidate(buf, cnt); } if (ret == 0) ret = cnt; diff --git a/drivers/block/aoe/aoecmd.c b/drivers/block/aoe/aoecmd.c index 326ca3876b68..39da28d344fe 100644 --- a/drivers/block/aoe/aoecmd.c +++ b/drivers/block/aoe/aoecmd.c @@ -8,6 +8,7 @@ #include <linux/blkdev.h> #include <linux/skbuff.h> #include <linux/netdevice.h> +#include <linux/genhd.h> #include <asm/unaligned.h> #include "aoe.h" @@ -28,6 +29,7 @@ new_skb(struct net_device *if_dev, ulong len) skb->protocol = __constant_htons(ETH_P_AOE); skb->priority = 0; skb_put(skb, len); + memset(skb->head, 0, len); skb->next = skb->prev = NULL; /* tell the network layer not to perform IP checksums @@ -188,12 +190,67 @@ aoecmd_ata_rw(struct aoedev *d, struct frame *f) } } +/* some callers cannot sleep, and they can call this function, + * transmitting the packets later, when interrupts are on + */ +static struct sk_buff * +aoecmd_cfg_pkts(ushort aoemajor, unsigned char aoeminor, struct sk_buff **tail) +{ + struct aoe_hdr *h; + struct aoe_cfghdr *ch; + struct sk_buff *skb, *sl, *sl_tail; + struct net_device *ifp; + + sl = sl_tail = NULL; + + read_lock(&dev_base_lock); + for (ifp = dev_base; ifp; dev_put(ifp), ifp = ifp->next) { + dev_hold(ifp); + if (!is_aoe_netif(ifp)) + continue; + + skb = new_skb(ifp, sizeof *h + sizeof *ch); + if (skb == NULL) { + printk(KERN_INFO "aoe: aoecmd_cfg: skb alloc failure\n"); + continue; + } + if (sl_tail == NULL) + sl_tail = skb; + h = (struct aoe_hdr *) skb->mac.raw; + memset(h, 0, sizeof *h + sizeof *ch); + + memset(h->dst, 0xff, sizeof h->dst); + memcpy(h->src, ifp->dev_addr, sizeof h->src); + h->type = __constant_cpu_to_be16(ETH_P_AOE); + h->verfl = AOE_HVER; + h->major = cpu_to_be16(aoemajor); + h->minor = aoeminor; + h->cmd = AOECMD_CFG; + + skb->next = sl; + sl = skb; + } + read_unlock(&dev_base_lock); + + if (tail != NULL) + *tail = sl_tail; + return sl; +} + /* enters with d->lock held */ void aoecmd_work(struct aoedev *d) { struct frame *f; struct buf *buf; + + if (d->flags & DEVFL_PAUSE) { + if (!aoedev_isbusy(d)) + d->sendq_hd = aoecmd_cfg_pkts(d->aoemajor, + d->aoeminor, &d->sendq_tl); + return; + } + loop: f = getframe(d, FREETAG); if (f == NULL) @@ -229,6 +286,8 @@ rexmit(struct aoedev *d, struct frame *f) h = (struct aoe_hdr *) f->data; f->tag = n; h->tag = cpu_to_be32(n); + memcpy(h->dst, d->addr, sizeof h->dst); + memcpy(h->src, d->ifp->dev_addr, sizeof h->src); skb = skb_prepare(d, f); if (skb) { @@ -272,7 +331,7 @@ rexmit_timer(ulong vp) spin_lock_irqsave(&d->lock, flags); if (d->flags & DEVFL_TKILL) { -tdie: spin_unlock_irqrestore(&d->lock, flags); + spin_unlock_irqrestore(&d->lock, flags); return; } f = d->frames; @@ -283,7 +342,7 @@ tdie: spin_unlock_irqrestore(&d->lock, flags); n /= HZ; if (n > MAXWAIT) { /* waited too long. device failure. */ aoedev_downdev(d); - goto tdie; + break; } rexmit(d, f); } @@ -305,6 +364,37 @@ tdie: spin_unlock_irqrestore(&d->lock, flags); aoenet_xmit(sl); } +/* this function performs work that has been deferred until sleeping is OK + */ +void +aoecmd_sleepwork(void *vp) +{ + struct aoedev *d = (struct aoedev *) vp; + + if (d->flags & DEVFL_GDALLOC) + aoeblk_gdalloc(d); + + if (d->flags & DEVFL_NEWSIZE) { + struct block_device *bd; + unsigned long flags; + u64 ssize; + + ssize = d->gd->capacity; + bd = bdget_disk(d->gd, 0); + + if (bd) { + mutex_lock(&bd->bd_inode->i_mutex); + i_size_write(bd->bd_inode, (loff_t)ssize<<9); + mutex_unlock(&bd->bd_inode->i_mutex); + bdput(bd); + } + spin_lock_irqsave(&d->lock, flags); + d->flags |= DEVFL_UP; + d->flags &= ~DEVFL_NEWSIZE; + spin_unlock_irqrestore(&d->lock, flags); + } +} + static void ataid_complete(struct aoedev *d, unsigned char *id) { @@ -339,21 +429,29 @@ ataid_complete(struct aoedev *d, unsigned char *id) d->geo.heads = le16_to_cpu(get_unaligned((__le16 *) &id[55<<1])); d->geo.sectors = le16_to_cpu(get_unaligned((__le16 *) &id[56<<1])); } + + if (d->ssize != ssize) + printk(KERN_INFO "aoe: %012llx e%lu.%lu v%04x has %llu " + "sectors\n", (unsigned long long)mac_addr(d->addr), + d->aoemajor, d->aoeminor, + d->fw_ver, (long long)ssize); d->ssize = ssize; d->geo.start = 0; if (d->gd != NULL) { d->gd->capacity = ssize; - d->flags |= DEVFL_UP; - return; - } - if (d->flags & DEVFL_WORKON) { - printk(KERN_INFO "aoe: ataid_complete: can't schedule work, it's already on! " - "(This really shouldn't happen).\n"); - return; + d->flags |= DEVFL_NEWSIZE; + } else { + if (d->flags & DEVFL_GDALLOC) { + printk(KERN_INFO "aoe: %s: %s e%lu.%lu, %s\n", + __FUNCTION__, + "can't schedule work for", + d->aoemajor, d->aoeminor, + "it's already on! (This really shouldn't happen).\n"); + return; + } + d->flags |= DEVFL_GDALLOC; } - INIT_WORK(&d->work, aoeblk_gdalloc, d); schedule_work(&d->work); - d->flags |= DEVFL_WORKON; } static void @@ -419,6 +517,8 @@ aoecmd_ata_rsp(struct sk_buff *skb) ahout = (struct aoe_atahdr *) (f->data + sizeof(struct aoe_hdr)); buf = f->buf; + if (ahout->cmdstat == WIN_IDENTIFY) + d->flags &= ~DEVFL_PAUSE; if (ahin->cmdstat & 0xa9) { /* these bits cleared on success */ printk(KERN_CRIT "aoe: aoecmd_ata_rsp: ata error cmd=%2.2Xh " "stat=%2.2Xh from e%ld.%ld\n", @@ -451,7 +551,6 @@ aoecmd_ata_rsp(struct sk_buff *skb) return; } ataid_complete(d, (char *) (ahin+1)); - /* d->flags |= DEVFL_WC_UPDATE; */ break; default: printk(KERN_INFO "aoe: aoecmd_ata_rsp: unrecognized " @@ -484,51 +583,19 @@ aoecmd_ata_rsp(struct sk_buff *skb) f->tag = FREETAG; aoecmd_work(d); - sl = d->sendq_hd; d->sendq_hd = d->sendq_tl = NULL; spin_unlock_irqrestore(&d->lock, flags); - aoenet_xmit(sl); } void aoecmd_cfg(ushort aoemajor, unsigned char aoeminor) { - struct aoe_hdr *h; - struct aoe_cfghdr *ch; - struct sk_buff *skb, *sl; - struct net_device *ifp; - - sl = NULL; - - read_lock(&dev_base_lock); - for (ifp = dev_base; ifp; dev_put(ifp), ifp = ifp->next) { - dev_hold(ifp); - if (!is_aoe_netif(ifp)) - continue; - - skb = new_skb(ifp, sizeof *h + sizeof *ch); - if (skb == NULL) { - printk(KERN_INFO "aoe: aoecmd_cfg: skb alloc failure\n"); - continue; - } - h = (struct aoe_hdr *) skb->mac.raw; - memset(h, 0, sizeof *h + sizeof *ch); - - memset(h->dst, 0xff, sizeof h->dst); - memcpy(h->src, ifp->dev_addr, sizeof h->src); - h->type = __constant_cpu_to_be16(ETH_P_AOE); - h->verfl = AOE_HVER; - h->major = cpu_to_be16(aoemajor); - h->minor = aoeminor; - h->cmd = AOECMD_CFG; + struct sk_buff *sl; - skb->next = sl; - sl = skb; - } - read_unlock(&dev_base_lock); + sl = aoecmd_cfg_pkts(aoemajor, aoeminor, NULL); aoenet_xmit(sl); } @@ -561,9 +628,6 @@ aoecmd_ata_id(struct aoedev *d) f->waited = 0; f->writedatalen = 0; - /* this message initializes the device, so we reset the rttavg */ - d->rttavg = MAXTIMER; - /* set up ata header */ ah->scnt = 1; ah->cmdstat = WIN_IDENTIFY; @@ -571,12 +635,8 @@ aoecmd_ata_id(struct aoedev *d) skb = skb_prepare(d, f); - /* we now want to start the rexmit tracking */ - d->flags &= ~DEVFL_TKILL; - d->timer.data = (ulong) d; + d->rttavg = MAXTIMER; d->timer.function = rexmit_timer; - d->timer.expires = jiffies + TIMERTICK; - add_timer(&d->timer); return skb; } @@ -590,7 +650,7 @@ aoecmd_cfg_rsp(struct sk_buff *skb) ulong flags, sysminor, aoemajor; u16 bufcnt; struct sk_buff *sl; - enum { MAXFRAMES = 8 }; + enum { MAXFRAMES = 16 }; h = (struct aoe_hdr *) skb->mac.raw; ch = (struct aoe_cfghdr *) (h+1); @@ -618,23 +678,28 @@ aoecmd_cfg_rsp(struct sk_buff *skb) if (bufcnt > MAXFRAMES) /* keep it reasonable */ bufcnt = MAXFRAMES; - d = aoedev_set(sysminor, h->src, skb->dev, bufcnt); + d = aoedev_by_sysminor_m(sysminor, bufcnt); if (d == NULL) { - printk(KERN_INFO "aoe: aoecmd_cfg_rsp: device set failure\n"); + printk(KERN_INFO "aoe: aoecmd_cfg_rsp: device sysminor_m failure\n"); return; } spin_lock_irqsave(&d->lock, flags); - if (d->flags & (DEVFL_UP | DEVFL_CLOSEWAIT)) { + /* permit device to migrate mac and network interface */ + d->ifp = skb->dev; + memcpy(d->addr, h->src, sizeof d->addr); + + /* don't change users' perspective */ + if (d->nopen && !(d->flags & DEVFL_PAUSE)) { spin_unlock_irqrestore(&d->lock, flags); return; } - + d->flags |= DEVFL_PAUSE; /* force pause */ d->fw_ver = be16_to_cpu(ch->fwver); - /* we get here only if the device is new */ - sl = aoecmd_ata_id(d); + /* check for already outstanding ataid */ + sl = aoedev_isbusy(d) == 0 ? aoecmd_ata_id(d) : NULL; spin_unlock_irqrestore(&d->lock, flags); diff --git a/drivers/block/aoe/aoedev.c b/drivers/block/aoe/aoedev.c index ded33ba31acc..ed4258a62df5 100644 --- a/drivers/block/aoe/aoedev.c +++ b/drivers/block/aoe/aoedev.c @@ -12,6 +12,24 @@ static struct aoedev *devlist; static spinlock_t devlist_lock; +int +aoedev_isbusy(struct aoedev *d) +{ + struct frame *f, *e; + + f = d->frames; + e = f + d->nframes; + do { + if (f->tag != FREETAG) { + printk(KERN_DEBUG "aoe: %ld.%ld isbusy\n", + d->aoemajor, d->aoeminor); + return 1; + } + } while (++f < e); + + return 0; +} + struct aoedev * aoedev_by_aoeaddr(int maj, int min) { @@ -28,6 +46,18 @@ aoedev_by_aoeaddr(int maj, int min) return d; } +static void +dummy_timer(ulong vp) +{ + struct aoedev *d; + + d = (struct aoedev *)vp; + if (d->flags & DEVFL_TKILL) + return; + d->timer.expires = jiffies + HZ; + add_timer(&d->timer); +} + /* called with devlist lock held */ static struct aoedev * aoedev_newdev(ulong nframes) @@ -44,6 +74,8 @@ aoedev_newdev(ulong nframes) return NULL; } + INIT_WORK(&d->work, aoecmd_sleepwork, d); + d->nframes = nframes; d->frames = f; e = f + nframes; @@ -52,6 +84,10 @@ aoedev_newdev(ulong nframes) spin_lock_init(&d->lock); init_timer(&d->timer); + d->timer.data = (ulong) d; + d->timer.function = dummy_timer; + d->timer.expires = jiffies + HZ; + add_timer(&d->timer); d->bufpool = NULL; /* defer to aoeblk_gdalloc */ INIT_LIST_HEAD(&d->bufq); d->next = devlist; @@ -67,9 +103,6 @@ aoedev_downdev(struct aoedev *d) struct buf *buf; struct bio *bio; - d->flags |= DEVFL_TKILL; - del_timer(&d->timer); - f = d->frames; e = f + d->nframes; for (; f<e; f->tag = FREETAG, f->buf = NULL, f++) { @@ -92,16 +125,15 @@ aoedev_downdev(struct aoedev *d) bio_endio(bio, bio->bi_size, -EIO); } - if (d->nopen) - d->flags |= DEVFL_CLOSEWAIT; if (d->gd) d->gd->capacity = 0; - d->flags &= ~DEVFL_UP; + d->flags &= ~(DEVFL_UP | DEVFL_PAUSE); } +/* find it or malloc it */ struct aoedev * -aoedev_set(ulong sysminor, unsigned char *addr, struct net_device *ifp, ulong bufcnt) +aoedev_by_sysminor_m(ulong sysminor, ulong bufcnt) { struct aoedev *d; ulong flags; @@ -112,25 +144,19 @@ aoedev_set(ulong sysminor, unsigned char *addr, struct net_device *ifp, ulong bu if (d->sysminor == sysminor) break; - if (d == NULL && (d = aoedev_newdev(bufcnt)) == NULL) { - spin_unlock_irqrestore(&devlist_lock, flags); - printk(KERN_INFO "aoe: aoedev_set: aoedev_newdev failure.\n"); - return NULL; - } /* if newdev, (d->flags & DEVFL_UP) == 0 for below */ - - spin_unlock_irqrestore(&devlist_lock, flags); - spin_lock_irqsave(&d->lock, flags); - - d->ifp = ifp; - memcpy(d->addr, addr, sizeof d->addr); - if ((d->flags & DEVFL_UP) == 0) { - aoedev_downdev(d); /* flushes outstanding frames */ + if (d == NULL) { + d = aoedev_newdev(bufcnt); + if (d == NULL) { + spin_unlock_irqrestore(&devlist_lock, flags); + printk(KERN_INFO "aoe: aoedev_set: aoedev_newdev failure.\n"); + return NULL; + } d->sysminor = sysminor; d->aoemajor = AOEMAJOR(sysminor); d->aoeminor = AOEMINOR(sysminor); } - spin_unlock_irqrestore(&d->lock, flags); + spin_unlock_irqrestore(&devlist_lock, flags); return d; } @@ -161,6 +187,7 @@ aoedev_exit(void) spin_lock_irqsave(&d->lock, flags); aoedev_downdev(d); + d->flags |= DEVFL_TKILL; spin_unlock_irqrestore(&d->lock, flags); del_timer_sync(&d->timer); diff --git a/drivers/block/aoe/aoemain.c b/drivers/block/aoe/aoemain.c index 387588a3f4ba..de08491ebe66 100644 --- a/drivers/block/aoe/aoemain.c +++ b/drivers/block/aoe/aoemain.c @@ -11,7 +11,7 @@ MODULE_LICENSE("GPL"); MODULE_AUTHOR("Sam Hopkins <sah@coraid.com>"); -MODULE_DESCRIPTION("AoE block/char driver for 2.6.[0-9]+"); +MODULE_DESCRIPTION("AoE block/char driver for 2.6.2 and newer 2.6 kernels"); MODULE_VERSION(VERSION); enum { TINIT, TRUN, TKILL }; @@ -89,7 +89,7 @@ aoe_init(void) } printk(KERN_INFO - "aoe: aoe_init: AoE v2.6-%s initialised.\n", + "aoe: aoe_init: AoE v%s initialised.\n", VERSION); discover_timer(TINIT); return 0; diff --git a/drivers/block/aoe/aoenet.c b/drivers/block/aoe/aoenet.c index 4be976940f69..fdff774b8ab9 100644 --- a/drivers/block/aoe/aoenet.c +++ b/drivers/block/aoe/aoenet.c @@ -92,18 +92,6 @@ mac_addr(char addr[6]) return __be64_to_cpu(n); } -static struct sk_buff * -skb_check(struct sk_buff *skb) -{ - if (skb_is_nonlinear(skb)) - if ((skb = skb_share_check(skb, GFP_ATOMIC))) - if (skb_linearize(skb, GFP_ATOMIC) < 0) { - dev_kfree_skb(skb); - return NULL; - } - return skb; -} - void aoenet_xmit(struct sk_buff *sl) { @@ -125,14 +113,14 @@ aoenet_rcv(struct sk_buff *skb, struct net_device *ifp, struct packet_type *pt, struct aoe_hdr *h; u32 n; - skb = skb_check(skb); - if (!skb) + skb = skb_share_check(skb, GFP_ATOMIC); + if (skb == NULL) return 0; - + if (skb_is_nonlinear(skb)) + if (skb_linearize(skb, GFP_ATOMIC) < 0) + goto exit; if (!is_aoe_netif(ifp)) goto exit; - - //skb->len += ETH_HLEN; /* (1) */ skb_push(skb, ETH_HLEN); /* (1) */ h = (struct aoe_hdr *) skb->mac.raw; |