-
- ahin = (struct aoe_atahdr *) skb->data;
- skb_pull(skb, sizeof(*ahin));
- hout = (struct aoe_hdr *) skb_mac_header(f->skb);
- ahout = (struct aoe_atahdr *) (hout+1);
- buf = f->buf;
-
- if (ahin->cmdstat & 0xa9) { /* these bits cleared on success */
- printk(KERN_ERR
- "aoe: ata error cmd=%2.2Xh stat=%2.2Xh from e%ld.%d\n",
- ahout->cmdstat, ahin->cmdstat,
- d->aoemajor, d->aoeminor);
- if (buf)
- buf->flags |= BUFFL_FAIL;
- } else {
- if (d->htgt && t == *d->htgt) /* I'll help myself, thank you. */
- d->htgt = NULL;
- n = ahout->scnt << 9;
- switch (ahout->cmdstat) {
- case ATA_CMD_PIO_READ:
- case ATA_CMD_PIO_READ_EXT:
- if (skb->len < n) {
- printk(KERN_ERR
- "aoe: %s. skb->len=%d need=%ld\n",
- "runt data size in read", skb->len, n);
- /* fail frame f? just returning will rexmit. */
- spin_unlock_irqrestore(&d->lock, flags);
- return;
- }
- bvcpy(f->bv, f->bv_off, skb, n);
- case ATA_CMD_PIO_WRITE:
- case ATA_CMD_PIO_WRITE_EXT:
- ifp = getif(t, skb->dev);
- if (ifp) {
- ifp->lost = 0;
- if (n > DEFAULTBCNT)
- ifp->lostjumbo = 0;
- }
- if (f->bcnt -= n) {
- fadvance(f, n);
- resend(d, t, f);
- goto xmit;
- }
- break;
- case ATA_CMD_ID_ATA:
- if (skb->len < 512) {
- printk(KERN_INFO
- "aoe: runt data size in ataid. skb->len=%d\n",
- skb->len);
- spin_unlock_irqrestore(&d->lock, flags);
- return;
- }
- if (skb_linearize(skb))
- break;
- ataid_complete(d, t, skb->data);
- break;
- default:
- printk(KERN_INFO
- "aoe: unrecognized ata command %2.2Xh for %d.%d\n",
- ahout->cmdstat,
- get_unaligned_be16(&hin->major),
- hin->minor);
- }
- }
-
- if (buf && --buf->nframesout == 0 && buf->resid == 0) {
- diskstats(d->gd, buf->bio, jiffies - buf->stime, buf->sector);
- if (buf->flags & BUFFL_FAIL)
- bio_endio(buf->bio, -EIO);
- else {
- bio_flush_dcache_pages(buf->bio);
- bio_endio(buf->bio, 0);
- }
- mempool_free(buf, d->bufpool);
- }
-
- f->buf = NULL;
- f->tag = FREETAG;