1 files changed, 228 insertions, 234 deletions

diff --git a/drivers/net/via-velocity.c b/drivers/net/via-velocity.c
index 6b8d882d197..007c1297006 100644
--- a/drivers/net/via-velocity.c
+++ b/drivers/net/via-velocity.c
@@ -662,6 +662,10 @@ static void velocity_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid
         spin_unlock_irq(&vptr->lock);
 }
 
+static void velocity_init_rx_ring_indexes(struct velocity_info *vptr)
+{
+	vptr->rx.dirty = vptr->rx.filled = vptr->rx.curr = 0;
+}
 
 /**
  *	velocity_rx_reset	-	handle a receive reset
@@ -677,16 +681,16 @@ static void velocity_rx_reset(struct velocity_info *vptr)
 	struct mac_regs __iomem * regs = vptr->mac_regs;
 	int i;
 
-	vptr->rd_dirty = vptr->rd_filled = vptr->rd_curr = 0;
+	velocity_init_rx_ring_indexes(vptr);
 
 	/*
 	 *	Init state, all RD entries belong to the NIC
 	 */
 	for (i = 0; i < vptr->options.numrx; ++i)
-		vptr->rd_ring[i].rdesc0.len |= OWNED_BY_NIC;
+		vptr->rx.ring[i].rdesc0.len |= OWNED_BY_NIC;
 
 	writew(vptr->options.numrx, &regs->RBRDU);
-	writel(vptr->rd_pool_dma, &regs->RDBaseLo);
+	writel(vptr->rx.pool_dma, &regs->RDBaseLo);
 	writew(0, &regs->RDIdx);
 	writew(vptr->options.numrx - 1, &regs->RDCSize);
 }
@@ -779,15 +783,15 @@ static void velocity_init_registers(struct velocity_info *vptr,
 
 		vptr->int_mask = INT_MASK_DEF;
 
-		writel(vptr->rd_pool_dma, &regs->RDBaseLo);
+		writel(vptr->rx.pool_dma, &regs->RDBaseLo);
 		writew(vptr->options.numrx - 1, &regs->RDCSize);
 		mac_rx_queue_run(regs);
 		mac_rx_queue_wake(regs);
 
 		writew(vptr->options.numtx - 1, &regs->TDCSize);
 
-		for (i = 0; i < vptr->num_txq; i++) {
-			writel(vptr->td_pool_dma[i], &regs->TDBaseLo[i]);
+		for (i = 0; i < vptr->tx.numq; i++) {
+			writel(vptr->tx.pool_dma[i], &regs->TDBaseLo[i]);
 			mac_tx_queue_run(regs, i);
 		}
 
@@ -1047,7 +1051,7 @@ static void __devinit velocity_init_info(struct pci_dev *pdev,
 
 	vptr->pdev = pdev;
 	vptr->chip_id = info->chip_id;
-	vptr->num_txq = info->txqueue;
+	vptr->tx.numq = info->txqueue;
 	vptr->multicast_limit = MCAM_SIZE;
 	spin_lock_init(&vptr->lock);
 	INIT_LIST_HEAD(&vptr->list);
@@ -1093,95 +1097,69 @@ static int __devinit velocity_get_pci_info(struct velocity_info *vptr, struct pc
 }
 
 /**
- *	velocity_init_rings	-	set up DMA rings
+ *	velocity_init_dma_rings	-	set up DMA rings
  *	@vptr: Velocity to set up
  *
  *	Allocate PCI mapped DMA rings for the receive and transmit layer
  *	to use.
  */
 
-static int velocity_init_rings(struct velocity_info *vptr)
+static int velocity_init_dma_rings(struct velocity_info *vptr)
 {
-	int i;
-	unsigned int psize;
-	unsigned int tsize;
+	struct velocity_opt *opt = &vptr->options;
+	const unsigned int rx_ring_size = opt->numrx * sizeof(struct rx_desc);
+	const unsigned int tx_ring_size = opt->numtx * sizeof(struct tx_desc);
+	struct pci_dev *pdev = vptr->pdev;
 	dma_addr_t pool_dma;
-	u8 *pool;
-
-	/*
-	 *	Allocate all RD/TD rings a single pool
-	 */
-
-	psize = vptr->options.numrx * sizeof(struct rx_desc) +
-		vptr->options.numtx * sizeof(struct tx_desc) * vptr->num_txq;
+	void *pool;
+	unsigned int i;
 
 	/*
+	 * Allocate all RD/TD rings a single pool.
+	 *
 	 * pci_alloc_consistent() fulfills the requirement for 64 bytes
 	 * alignment
 	 */
-	pool = pci_alloc_consistent(vptr->pdev, psize, &pool_dma);
-
-	if (pool == NULL) {
-		printk(KERN_ERR "%s : DMA memory allocation failed.\n",
-					vptr->dev->name);
+	pool = pci_alloc_consistent(pdev, tx_ring_size * vptr->tx.numq +
+				    rx_ring_size, &pool_dma);
+	if (!pool) {
+		dev_err(&pdev->dev, "%s : DMA memory allocation failed.\n",
+			vptr->dev->name);
 		return -ENOMEM;
 	}
 
-	memset(pool, 0, psize);
+	vptr->rx.ring = pool;
+	vptr->rx.pool_dma = pool_dma;
 
-	vptr->rd_ring = (struct rx_desc *) pool;
+	pool += rx_ring_size;
+	pool_dma += rx_ring_size;
 
-	vptr->rd_pool_dma = pool_dma;
-
-	tsize = vptr->options.numtx * PKT_BUF_SZ * vptr->num_txq;
-	vptr->tx_bufs = pci_alloc_consistent(vptr->pdev, tsize,
-						&vptr->tx_bufs_dma);
-
-	if (vptr->tx_bufs == NULL) {
-		printk(KERN_ERR "%s: DMA memory allocation failed.\n",
-					vptr->dev->name);
-		pci_free_consistent(vptr->pdev, psize, pool, pool_dma);
-		return -ENOMEM;
+	for (i = 0; i < vptr->tx.numq; i++) {
+		vptr->tx.rings[i] = pool;
+		vptr->tx.pool_dma[i] = pool_dma;
+		pool += tx_ring_size;
+		pool_dma += tx_ring_size;
 	}
 
-	memset(vptr->tx_bufs, 0, vptr->options.numtx * PKT_BUF_SZ * vptr->num_txq);
-
-	i = vptr->options.numrx * sizeof(struct rx_desc);
-	pool += i;
-	pool_dma += i;
-	for (i = 0; i < vptr->num_txq; i++) {
-		int offset = vptr->options.numtx * sizeof(struct tx_desc);
-
-		vptr->td_pool_dma[i] = pool_dma;
-		vptr->td_rings[i] = (struct tx_desc *) pool;
-		pool += offset;
-		pool_dma += offset;
-	}
 	return 0;
 }
 
 /**
- *	velocity_free_rings	-	free PCI ring pointers
+ *	velocity_free_dma_rings	-	free PCI ring pointers
  *	@vptr: Velocity to free from
  *
  *	Clean up the PCI ring buffers allocated to this velocity.
  */
 
-static void velocity_free_rings(struct velocity_info *vptr)
+static void velocity_free_dma_rings(struct velocity_info *vptr)
 {
-	int size;
-
-	size = vptr->options.numrx * sizeof(struct rx_desc) +
-	       vptr->options.numtx * sizeof(struct tx_desc) * vptr->num_txq;
+	const int size = vptr->options.numrx * sizeof(struct rx_desc) +
+		vptr->options.numtx * sizeof(struct tx_desc) * vptr->tx.numq;
 
-	pci_free_consistent(vptr->pdev, size, vptr->rd_ring, vptr->rd_pool_dma);
-
-	size = vptr->options.numtx * PKT_BUF_SZ * vptr->num_txq;
-
-	pci_free_consistent(vptr->pdev, size, vptr->tx_bufs, vptr->tx_bufs_dma);
+	pci_free_consistent(vptr->pdev, size, vptr->rx.ring, vptr->rx.pool_dma);
 }
 
-static inline void velocity_give_many_rx_descs(struct velocity_info *vptr)
+static void velocity_give_many_rx_descs(struct velocity_info *vptr)
 {
 	struct mac_regs __iomem *regs = vptr->mac_regs;
 	int avail, dirty, unusable;
@@ -1190,49 +1168,52 @@ static inline void velocity_give_many_rx_descs(struct velocity_info *vptr)
 	 * RD number must be equal to 4X per hardware spec
 	 * (programming guide rev 1.20, p.13)
 	 */
-	if (vptr->rd_filled < 4)
+	if (vptr->rx.filled < 4)
 		return;
 
 	wmb();
 
-	unusable = vptr->rd_filled & 0x0003;
-	dirty = vptr->rd_dirty - unusable;
-	for (avail = vptr->rd_filled & 0xfffc; avail; avail--) {
+	unusable = vptr->rx.filled & 0x0003;
+	dirty = vptr->rx.dirty - unusable;
+	for (avail = vptr->rx.filled & 0xfffc; avail; avail--) {
 		dirty = (dirty > 0) ? dirty - 1 : vptr->options.numrx - 1;
-		vptr->rd_ring[dirty].rdesc0.len |= OWNED_BY_NIC;
+		vptr->rx.ring[dirty].rdesc0.len |= OWNED_BY_NIC;
 	}
 
-	writew(vptr->rd_filled & 0xfffc, &regs->RBRDU);
-	vptr->rd_filled = unusable;
+	writew(vptr->rx.filled & 0xfffc, &regs->RBRDU);
+	vptr->rx.filled = unusable;
 }
 
 static int velocity_rx_refill(struct velocity_info *vptr)
 {
-	int dirty = vptr->rd_dirty, done = 0, ret = 0;
+	int dirty = vptr->rx.dirty, done = 0;
 
 	do {
-		struct rx_desc *rd = vptr->rd_ring + dirty;
+		struct rx_desc *rd = vptr->rx.ring + dirty;
 
 		/* Fine for an all zero Rx desc at init time as well */
 		if (rd->rdesc0.len & OWNED_BY_NIC)
 			break;
 
-		if (!vptr->rd_info[dirty].skb) {
-			ret = velocity_alloc_rx_buf(vptr, dirty);
-			if (ret < 0)
+		if (!vptr->rx.info[dirty].skb) {
+			if (velocity_alloc_rx_buf(vptr, dirty) < 0)
 				break;
 		}
 		done++;
 		dirty = (dirty < vptr->options.numrx - 1) ? dirty + 1 : 0;
-	} while (dirty != vptr->rd_curr);
+	} while (dirty != vptr->rx.curr);
 
 	if (done) {
-		vptr->rd_dirty = dirty;
-		vptr->rd_filled += done;
-		velocity_give_many_rx_descs(vptr);
+		vptr->rx.dirty = dirty;
+		vptr->rx.filled += done;
 	}
 
-	return ret;
+	return done;
+}
+
+static void velocity_set_rxbufsize(struct velocity_info *vptr, int mtu)
+{
+	vptr->rx.buf_sz = (mtu <= ETH_DATA_LEN) ? PKT_BUF_SZ : mtu + 32;
 }
 
 /**
@@ -1245,25 +1226,24 @@ static int velocity_rx_refill(struct velocity_info *vptr)
 
 static int velocity_init_rd_ring(struct velocity_info *vptr)
 {
-	int ret;
-	int mtu = vptr->dev->mtu;
-
-	vptr->rx_buf_sz = (mtu <= ETH_DATA_LEN) ? PKT_BUF_SZ : mtu + 32;
+	int ret = -ENOMEM;
 
-	vptr->rd_info = kcalloc(vptr->options.numrx,
+	vptr->rx.info = kcalloc(vptr->options.numrx,
 				sizeof(struct velocity_rd_info), GFP_KERNEL);
-	if (!vptr->rd_info)
-		return -ENOMEM;
+	if (!vptr->rx.info)
+		goto out;
 
-	vptr->rd_filled = vptr->rd_dirty = vptr->rd_curr = 0;
+	velocity_init_rx_ring_indexes(vptr);
 
-	ret = velocity_rx_refill(vptr);
-	if (ret < 0) {
+	if (velocity_rx_refill(vptr) != vptr->options.numrx) {
 		VELOCITY_PRT(MSG_LEVEL_ERR, KERN_ERR
 			"%s: failed to allocate RX buffer.\n", vptr->dev->name);
 		velocity_free_rd_ring(vptr);
+		goto out;
 	}
 
+	ret = 0;
+out:
 	return ret;
 }
 
@@ -1279,18 +1259,18 @@ static void velocity_free_rd_ring(struct velocity_info *vptr)
 {
 	int i;
 
-	if (vptr->rd_info == NULL)
+	if (vptr->rx.info == NULL)
 		return;
 
 	for (i = 0; i < vptr->options.numrx; i++) {
-		struct velocity_rd_info *rd_info = &(vptr->rd_info[i]);
-		struct rx_desc *rd = vptr->rd_ring + i;
+		struct velocity_rd_info *rd_info = &(vptr->rx.info[i]);
+		struct rx_desc *rd = vptr->rx.ring + i;
 
 		memset(rd, 0, sizeof(*rd));
 
 		if (!rd_info->skb)
 			continue;
-		pci_unmap_single(vptr->pdev, rd_info->skb_dma, vptr->rx_buf_sz,
+		pci_unmap_single(vptr->pdev, rd_info->skb_dma, vptr->rx.buf_sz,
 				 PCI_DMA_FROMDEVICE);
 		rd_info->skb_dma = (dma_addr_t) NULL;
 
@@ -1298,8 +1278,8 @@ static void velocity_free_rd_ring(struct velocity_info *vptr)
 		rd_info->skb = NULL;
 	}
 
-	kfree(vptr->rd_info);
-	vptr->rd_info = NULL;
+	kfree(vptr->rx.info);
+	vptr->rx.info = NULL;
 }
 
 /**
@@ -1313,33 +1293,23 @@ static void velocity_free_rd_ring(struct velocity_info *vptr)
 
 static int velocity_init_td_ring(struct velocity_info *vptr)
 {
-	int i, j;
 	dma_addr_t curr;
-	struct tx_desc *td;
-	struct velocity_td_info *td_info;
+	unsigned int j;
 
 	/* Init the TD ring entries */
-	for (j = 0; j < vptr->num_txq; j++) {
-		curr = vptr->td_pool_dma[j];
+	for (j = 0; j < vptr->tx.numq; j++) {
+		curr = vptr->tx.pool_dma[j];
 
-		vptr->td_infos[j] = kcalloc(vptr->options.numtx,
+		vptr->tx.infos[j] = kcalloc(vptr->options.numtx,
 					    sizeof(struct velocity_td_info),
 					    GFP_KERNEL);
-		if (!vptr->td_infos[j])	{
+		if (!vptr->tx.infos[j])	{
 			while(--j >= 0)
-				kfree(vptr->td_infos[j]);
+				kfree(vptr->tx.infos[j]);
 			return -ENOMEM;
 		}
 
-		for (i = 0; i < vptr->options.numtx; i++, curr += sizeof(struct tx_desc)) {
-			td = &(vptr->td_rings[j][i]);
-			td_info = &(vptr->td_infos[j][i]);
-			td_info->buf = vptr->tx_bufs +
-				(j * vptr->options.numtx + i) * PKT_BUF_SZ;
-			td_info->buf_dma = vptr->tx_bufs_dma +
-				(j * vptr->options.numtx + i) * PKT_BUF_SZ;
-		}
-		vptr->td_tail[j] = vptr->td_curr[j] = vptr->td_used[j] = 0;
+		vptr->tx.tail[j] = vptr->tx.curr[j] = vptr->tx.used[j] = 0;
 	}
 	return 0;
 }
@@ -1351,7 +1321,7 @@ static int velocity_init_td_ring(struct velocity_info *vptr)
 static void velocity_free_td_ring_entry(struct velocity_info *vptr,
 							 int q, int n)
 {
-	struct velocity_td_info * td_info = &(vptr->td_infos[q][n]);
+	struct velocity_td_info * td_info = &(vptr->tx.infos[q][n]);
 	int i;
 
 	if (td_info == NULL)
@@ -1383,15 +1353,15 @@ static void velocity_free_td_ring(struct velocity_info *vptr)
 {
 	int i, j;
 
-	for (j = 0; j < vptr->num_txq; j++) {
-		if (vptr->td_infos[j] == NULL)
+	for (j = 0; j < vptr->tx.numq; j++) {
+		if (vptr->tx.infos[j] == NULL)
 			continue;
 		for (i = 0; i < vptr->options.numtx; i++) {
 			velocity_free_td_ring_entry(vptr, j, i);
 
 		}
-		kfree(vptr->td_infos[j]);
-		vptr->td_infos[j] = NULL;
+		kfree(vptr->tx.infos[j]);
+		vptr->tx.infos[j] = NULL;
 	}
 }
 
@@ -1408,13 +1378,13 @@ static void velocity_free_td_ring(struct velocity_info *vptr)
 static int velocity_rx_srv(struct velocity_info *vptr, int status)
 {
 	struct net_device_stats *stats = &vptr->stats;
-	int rd_curr = vptr->rd_curr;
+	int rd_curr = vptr->rx.curr;
 	int works = 0;
 
 	do {
-		struct rx_desc *rd = vptr->rd_ring + rd_curr;
+		struct rx_desc *rd = vptr->rx.ring + rd_curr;
 
-		if (!vptr->rd_info[rd_curr].skb)
+		if (!vptr->rx.info[rd_curr].skb)
 			break;
 
 		if (rd->rdesc0.len & OWNED_BY_NIC)
@@ -1446,12 +1416,10 @@ static int velocity_rx_srv(struct velocity_info *vptr, int status)
 			rd_curr = 0;
 	} while (++works <= 15);
 
-	vptr->rd_curr = rd_curr;
+	vptr->rx.curr = rd_curr;
 
-	if (works > 0 && velocity_rx_refill(vptr) < 0) {
-		VELOCITY_PRT(MSG_LEVEL_ERR, KERN_ERR
-			"%s: rx buf allocation failure\n", vptr->dev->name);
-	}
+	if ((works > 0) && (velocity_rx_refill(vptr) > 0))
+		velocity_give_many_rx_descs(vptr);
 
 	VAR_USED(stats);
 	return works;
@@ -1495,24 +1463,18 @@ static inline void velocity_rx_csum(struct rx_desc *rd, struct sk_buff *skb)
  *	enough. This function returns a negative value if the received
  *	packet is too big or if memory is exhausted.
  */
-static inline int velocity_rx_copy(struct sk_buff **rx_skb, int pkt_size,
-				   struct velocity_info *vptr)
+static int velocity_rx_copy(struct sk_buff **rx_skb, int pkt_size,
+			    struct velocity_info *vptr)
 {
 	int ret = -1;
-
 	if (pkt_size < rx_copybreak) {
 		struct sk_buff *new_skb;
 
-		new_skb = dev_alloc_skb(pkt_size + 2);
+		new_skb = netdev_alloc_skb(vptr->dev, pkt_size + 2);
 		if (new_skb) {
-			new_skb->dev = vptr->dev;
 			new_skb->ip_summed = rx_skb[0]->ip_summed;
-
-			if (vptr->flags & VELOCITY_FLAGS_IP_ALIGN)
-				skb_reserve(new_skb, 2);
-
-			skb_copy_from_linear_data(rx_skb[0], new_skb->data,
-						  pkt_size);
+			skb_reserve(new_skb, 2);
+			skb_copy_from_linear_data(*rx_skb, new_skb->data, pkt_size);
 			*rx_skb = new_skb;
 			ret = 0;
 		}
@@ -1533,12 +1495,8 @@ static inline int velocity_rx_copy(struct sk_buff **rx_skb, int pkt_size,
 static inline void velocity_iph_realign(struct velocity_info *vptr,
 					struct sk_buff *skb, int pkt_size)
 {
-	/* FIXME - memmove ? */
 	if (vptr->flags & VELOCITY_FLAGS_IP_ALIGN) {
-		int i;
-
-		for (i = pkt_size; i >= 0; i--)
-			*(skb->data + i + 2) = *(skb->data + i);
+		memmove(skb->data + 2, skb->data, pkt_size);
 		skb_reserve(skb, 2);
 	}
 }
@@ -1556,8 +1514,8 @@ static int velocity_receive_frame(struct velocity_info *vptr, int idx)
 {
 	void (*pci_action)(struct pci_dev *, dma_addr_t, size_t, int);
 	struct net_device_stats *stats = &vptr->stats;
-	struct velocity_rd_info *rd_info = &(vptr->rd_info[idx]);
-	struct rx_desc *rd = &(vptr->rd_ring[idx]);
+	struct velocity_rd_info *rd_info = &(vptr->rx.info[idx]);
+	struct rx_desc *rd = &(vptr->rx.ring[idx]);
 	int pkt_len = le16_to_cpu(rd->rdesc0.len) & 0x3fff;
 	struct sk_buff *skb;
 
@@ -1573,7 +1531,7 @@ static int velocity_receive_frame(struct velocity_info *vptr, int idx)
 	skb = rd_info->skb;
 
 	pci_dma_sync_single_for_cpu(vptr->pdev, rd_info->skb_dma,
-				    vptr->rx_buf_sz, PCI_DMA_FROMDEVICE);
+				    vptr->rx.buf_sz, PCI_DMA_FROMDEVICE);
 
 	/*
 	 *	Drop frame not meeting IEEE 802.3
@@ -1596,7 +1554,7 @@ static int velocity_receive_frame(struct velocity_info *vptr, int idx)
 		rd_info->skb = NULL;
 	}
 
-	pci_action(vptr->pdev, rd_info->skb_dma, vptr->rx_buf_sz,
+	pci_action(vptr->pdev, rd_info->skb_dma, vptr->rx.buf_sz,
 		   PCI_DMA_FROMDEVICE);
 
 	skb_put(skb, pkt_len - 4);
@@ -1626,10 +1584,10 @@ static int velocity_receive_frame(struct velocity_info *vptr, int idx)
 
 static int velocity_alloc_rx_buf(struct velocity_info *vptr, int idx)
 {
-	struct rx_desc *rd = &(vptr->rd_ring[idx]);
-	struct velocity_rd_info *rd_info = &(vptr->rd_info[idx]);
+	struct rx_desc *rd = &(vptr->rx.ring[idx]);
+	struct velocity_rd_info *rd_info = &(vptr->rx.info[idx]);
 
-	rd_info->skb = dev_alloc_skb(vptr->rx_buf_sz + 64);
+	rd_info->skb = dev_alloc_skb(vptr->rx.buf_sz + 64);
 	if (rd_info->skb == NULL)
 		return -ENOMEM;
 
@@ -1638,15 +1596,15 @@ static int velocity_alloc_rx_buf(struct velocity_info *vptr, int idx)
 	 *	64byte alignment.
 	 */
 	skb_reserve(rd_info->skb, (unsigned long) rd_info->skb->data & 63);
-	rd_info->skb->dev = vptr->dev;
-	rd_info->skb_dma = pci_map_single(vptr->pdev, rd_info->skb->data, vptr->rx_buf_sz, PCI_DMA_FROMDEVICE);
+	rd_info->skb_dma = pci_map_single(vptr->pdev, rd_info->skb->data,
+					vptr->rx.buf_sz, PCI_DMA_FROMDEVICE);
 
 	/*
 	 *	Fill in the descriptor to match
- 	 */
+	 */
 
 	*((u32 *) & (rd->rdesc0)) = 0;
-	rd->size = cpu_to_le16(vptr->rx_buf_sz) | RX_INTEN;
+	rd->size = cpu_to_le16(vptr->rx.buf_sz) | RX_INTEN;
 	rd->pa_low = cpu_to_le32(rd_info->skb_dma);
 	rd->pa_high = 0;
 	return 0;
@@ -1672,15 +1630,15 @@ static int velocity_tx_srv(struct velocity_info *vptr, u32 status)
 	struct velocity_td_info *tdinfo;
 	struct net_device_stats *stats = &vptr->stats;
 
-	for (qnum = 0; qnum < vptr->num_txq; qnum++) {
-		for (idx = vptr->td_tail[qnum]; vptr->td_used[qnum] > 0;
+	for (qnum = 0; qnum < vptr->tx.numq; qnum++) {
+		for (idx = vptr->tx.tail[qnum]; vptr->tx.used[qnum] > 0;
 			idx = (idx + 1) % vptr->options.numtx) {
 
 			/*
 			 *	Get Tx Descriptor
 			 */
-			td = &(vptr->td_rings[qnum][idx]);
-			tdinfo = &(vptr->td_infos[qnum][idx]);
+			td = &(vptr->tx.rings[qnum][idx]);
+			tdinfo = &(vptr->tx.infos[qnum][idx]);
 
 			if (td->tdesc0.len & OWNED_BY_NIC)
 				break;
@@ -1704,9 +1662,9 @@ static int velocity_tx_srv(struct velocity_info *vptr, u32 status)
 				stats->tx_bytes += tdinfo->skb->len;
 			}
 			velocity_free_tx_buf(vptr, tdinfo);
-			vptr->td_used[qnum]--;
+			vptr->tx.used[qnum]--;
 		}
-		vptr->td_tail[qnum] = idx;
+		vptr->tx.tail[qnum] = idx;
 
 		if (AVAIL_TD(vptr, qnum) < 1) {
 			full = 1;
@@ -1878,7 +1836,7 @@ static void velocity_free_tx_buf(struct velocity_info *vptr, struct velocity_td_
 	/*
 	 *	Don't unmap the pre-allocated tx_bufs
 	 */
-	if (tdinfo->skb_dma && (tdinfo->skb_dma[0] != tdinfo->buf_dma)) {
+	if (tdinfo->skb_dma) {
 
 		for (i = 0; i < tdinfo->nskb_dma; i++) {
 #ifdef VELOCITY_ZERO_COPY_SUPPORT
@@ -1893,6 +1851,40 @@ static void velocity_free_tx_buf(struct velocity_info *vptr, struct velocity_td_
 	tdinfo->skb = NULL;
 }
 
+static int velocity_init_rings(struct velocity_info *vptr, int mtu)
+{
+	int ret;
+
+	velocity_set_rxbufsize(vptr, mtu);
+
+	ret = velocity_init_dma_rings(vptr);
+	if (ret < 0)
+		goto out;
+
+	ret = velocity_init_rd_ring(vptr);
+	if (ret < 0)
+		goto err_free_dma_rings_0;
+
+	ret = velocity_init_td_ring(vptr);
+	if (ret < 0)
+		goto err_free_rd_ring_1;
+out:
+	return ret;
+
+err_free_rd_ring_1:
+	velocity_free_rd_ring(vptr);
+err_free_dma_rings_0:
+	velocity_free_dma_rings(vptr);
+	goto out;
+}
+
+static void velocity_free_rings(struct velocity_info *vptr)
+{
+	velocity_free_td_ring(vptr);
+	velocity_free_rd_ring(vptr);
+	velocity_free_dma_rings(vptr);
+}
+
 /**
  *	velocity_open		-	interface activation callback
  *	@dev: network layer device to open
@@ -1909,21 +1901,15 @@ static int velocity_open(struct net_device *dev)
 	struct velocity_info *vptr = netdev_priv(dev);
 	int ret;
 
-	ret = velocity_init_rings(vptr);
+	ret = velocity_init_rings(vptr, dev->mtu);
 	if (ret < 0)
 		goto out;
 
-	ret = velocity_init_rd_ring(vptr);
-	if (ret < 0)
-		goto err_free_desc_rings;
-
-	ret = velocity_init_td_ring(vptr);
-	if (ret < 0)
-		goto err_free_rd_ring;
-
 	/* Ensure chip is running */
 	pci_set_power_state(vptr->pdev, PCI_D0);
 
+	velocity_give_many_rx_descs(vptr);
+
 	velocity_init_registers(vptr, VELOCITY_INIT_COLD);
 
 	ret = request_irq(vptr->pdev->irq, &velocity_intr, IRQF_SHARED,
@@ -1931,7 +1917,8 @@ static int velocity_open(struct net_device *dev)
 	if (ret < 0) {
 		/* Power down the chip */
 		pci_set_power_state(vptr->pdev, PCI_D3hot);
-		goto err_free_td_ring;
+		velocity_free_rings(vptr);
+		goto out;
 	}
 
 	mac_enable_int(vptr->mac_regs);
@@ -1939,14 +1926,6 @@ static int velocity_open(struct net_device *dev)
 	vptr->flags |= VELOCITY_FLAGS_OPENED;
 out:
 	return ret;
-
-err_free_td_ring:
-	velocity_free_td_ring(vptr);
-err_free_rd_ring:
-	velocity_free_rd_ring(vptr);
-err_free_desc_rings:
-	velocity_free_rings(vptr);
-	goto out;
 }
 
 /**
@@ -1962,48 +1941,72 @@ err_free_desc_rings:
 static int velocity_change_mtu(struct net_device *dev, int new_mtu)
 {
 	struct velocity_info *vptr = netdev_priv(dev);
-	unsigned long flags;
-	int oldmtu = dev->mtu;
 	int ret = 0;
 
 	if ((new_mtu < VELOCITY_MIN_MTU) || new_mtu > (VELOCITY_MAX_MTU)) {
 		VELOCITY_PRT(MSG_LEVEL_ERR, KERN_NOTICE "%s: Invalid MTU.\n",
 				vptr->dev->name);
-		return -EINVAL;
+		ret = -EINVAL;
+		goto out_0;
 	}
 
 	if (!netif_running(dev)) {
 		dev->mtu = new_mtu;
-		return 0;
+		goto out_0;
 	}
 
-	if (new_mtu != oldmtu) {
+	if (dev->mtu != new_mtu) {
+		struct velocity_info *tmp_vptr;
+		unsigned long flags;
+		struct rx_info rx;
+		struct tx_info tx;
+
+		tmp_vptr = kzalloc(sizeof(*tmp_vptr), GFP_KERNEL);
+		if (!tmp_vptr) {
+			ret = -ENOMEM;
+			goto out_0;
+		}
+
+		tmp_vptr->dev = dev;
+		tmp_vptr->pdev = vptr->pdev;
+		tmp_vptr->options = vptr->options;
+		tmp_vptr->tx.numq = vptr->tx.numq;
+
+		ret = velocity_init_rings(tmp_vptr, new_mtu);
+		if (ret < 0)
+			goto out_free_tmp_vptr_1;
+
 		spin_lock_irqsave(&vptr->lock, flags);
 
 		netif_stop_queue(dev);
 		velocity_shutdown(vptr);
 
-		velocity_free_td_ring(vptr);
-		velocity_free_rd_ring(vptr);
+		rx = vptr->rx;
+		tx = vptr->tx;
 
-		dev->mtu = new_mtu;
+		vptr->rx = tmp_vptr->rx;
+		vptr->tx = tmp_vptr->tx;
 
-		ret = velocity_init_rd_ring(vptr);
-		if (ret < 0)
-			goto out_unlock;
+		tmp_vptr->rx = rx;
+		tmp_vptr->tx = tx;
 
-		ret = velocity_init_td_ring(vptr);
-		if (ret < 0)
-			goto out_unlock;
+		dev->mtu = new_mtu;
+
+		velocity_give_many_rx_descs(vptr);
 
 		velocity_init_registers(vptr, VELOCITY_INIT_COLD);
 
 		mac_enable_int(vptr->mac_regs);
 		netif_start_queue(dev);
-out_unlock:
+
 		spin_unlock_irqrestore(&vptr->lock, flags);
-	}
 
+		velocity_free_rings(tmp_vptr);
+
+out_free_tmp_vptr_1:
+		kfree(tmp_vptr);
+	}
+out_0:
 	return ret;
 }
 
@@ -2049,9 +2052,6 @@ static int velocity_close(struct net_device *dev)
 	/* Power down the chip */
 	pci_set_power_state(vptr->pdev, PCI_D3hot);
 
-	/* Free the resources */
-	velocity_free_td_ring(vptr);
-	velocity_free_rd_ring(vptr);
 	velocity_free_rings(vptr);
 
 	vptr->flags &= (~VELOCITY_FLAGS_OPENED);
@@ -2074,9 +2074,19 @@ static int velocity_xmit(struct sk_buff *skb, struct net_device *dev)
 	struct tx_desc *td_ptr;
 	struct velocity_td_info *tdinfo;
 	unsigned long flags;
-	int index;
 	int pktlen = skb->len;
-	__le16 len = cpu_to_le16(pktlen);
+	__le16 len;
+	int index;
+
+
+
+	if (skb->len < ETH_ZLEN) {
+		if (skb_padto(skb, ETH_ZLEN))
+			goto out;
+		pktlen = ETH_ZLEN;
+	}
+
+	len = cpu_to_le16(pktlen);
 
 #ifdef VELOCITY_ZERO_COPY_SUPPORT
 	if (skb_shinfo(skb)->nr_frags > 6 && __skb_linearize(skb)) {
@@ -2087,30 +2097,13 @@ static int velocity_xmit(struct sk_buff *skb, struct net_device *dev)
 
 	spin_lock_irqsave(&vptr->lock, flags);
 
-	index = vptr->td_curr[qnum];
-	td_ptr = &(vptr->td_rings[qnum][index]);
-	tdinfo = &(vptr->td_infos[qnum][index]);
+	index = vptr->tx.curr[qnum];
+	td_ptr = &(vptr->tx.rings[qnum][index]);
+	tdinfo = &(vptr->tx.infos[qnum][index]);
 
 	td_ptr->tdesc1.TCR = TCR0_TIC;
 	td_ptr->td_buf[0].size &= ~TD_QUEUE;
 
-	/*
-	 *	Pad short frames.
-	 */
-	if (pktlen < ETH_ZLEN) {
-		/* Cannot occur until ZC support */
-		pktlen = ETH_ZLEN;
-		len = cpu_to_le16(ETH_ZLEN);
-		skb_copy_from_linear_data(skb, tdinfo->buf, skb->len);
-		memset(tdinfo->buf + skb->len, 0, ETH_ZLEN - skb->len);
-		tdinfo->skb = skb;
-		tdinfo->skb_dma[0] = tdinfo->buf_dma;
-		td_ptr->tdesc0.len = len;
-		td_ptr->td_buf[0].pa_low = cpu_to_le32(tdinfo->skb_dma[0]);
-		td_ptr->td_buf[0].pa_high = 0;
-		td_ptr->td_buf[0].size = len;	/* queue is 0 anyway */
-		tdinfo->nskb_dma = 1;
-	} else
 #ifdef VELOCITY_ZERO_COPY_SUPPORT
 	if (skb_shinfo(skb)->nr_frags > 0) {
 		int nfrags = skb_shinfo(skb)->nr_frags;
@@ -2119,9 +2112,9 @@ static int velocity_xmit(struct sk_buff *skb, struct net_device *dev)
 			skb_copy_from_linear_data(skb, tdinfo->buf, skb->len);
 			tdinfo->skb_dma[0] = tdinfo->buf_dma;
 			td_ptr->tdesc0.len = len;
-			td_ptr->td_buf[0].pa_low = cpu_to_le32(tdinfo->skb_dma[0]);
-			td_ptr->td_buf[0].pa_high = 0;
-			td_ptr->td_buf[0].size = len;	/* queue is 0 anyway */
+			td_ptr->tx.buf[0].pa_low = cpu_to_le32(tdinfo->skb_dma[0]);
+			td_ptr->tx.buf[0].pa_high = 0;
+			td_ptr->tx.buf[0].size = len;	/* queue is 0 anyway */
 			tdinfo->nskb_dma = 1;
 		} else {
 			int i = 0;
@@ -2132,9 +2125,9 @@ static int velocity_xmit(struct sk_buff *skb, struct net_device *dev)
 			td_ptr->tdesc0.len = len;
 
 			/* FIXME: support 48bit DMA later */
-			td_ptr->td_buf[i].pa_low = cpu_to_le32(tdinfo->skb_dma);
-			td_ptr->td_buf[i].pa_high = 0;
-			td_ptr->td_buf[i].size = cpu_to_le16(skb_headlen(skb));
+			td_ptr->tx.buf[i].pa_low = cpu_to_le32(tdinfo->skb_dma);
+			td_ptr->tx.buf[i].pa_high = 0;
+			td_ptr->tx.buf[i].size = cpu_to_le16(skb_headlen(skb));
 
 			for (i = 0; i < nfrags; i++) {
 				skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
@@ -2142,9 +2135,9 @@ static int velocity_xmit(struct sk_buff *skb, struct net_device *dev)
 
 				tdinfo->skb_dma[i + 1] = pci_map_single(vptr->pdev, addr, frag->size, PCI_DMA_TODEVICE);
 
-				td_ptr->td_buf[i + 1].pa_low = cpu_to_le32(tdinfo->skb_dma[i + 1]);
-				td_ptr->td_buf[i + 1].pa_high = 0;
-				td_ptr->td_buf[i + 1].size = cpu_to_le16(frag->size);
+				td_ptr->tx.buf[i + 1].pa_low = cpu_to_le32(tdinfo->skb_dma[i + 1]);
+				td_ptr->tx.buf[i + 1].pa_high = 0;
+				td_ptr->tx.buf[i + 1].size = cpu_to_le16(frag->size);
 			}
 			tdinfo->nskb_dma = i - 1;
 		}
@@ -2190,19 +2183,20 @@ static int velocity_xmit(struct sk_buff *skb, struct net_device *dev)
 		if (prev < 0)
 			prev = vptr->options.numtx - 1;
 		td_ptr->tdesc0.len |= OWNED_BY_NIC;
-		vptr->td_used[qnum]++;
-		vptr->td_curr[qnum] = (index + 1) % vptr->options.numtx;
+		vptr->tx.used[qnum]++;
+		vptr->tx.curr[qnum] = (index + 1) % vptr->options.numtx;
 
 		if (AVAIL_TD(vptr, qnum) < 1)
 			netif_stop_queue(dev);
 
-		td_ptr = &(vptr->td_rings[qnum][prev]);
+		td_ptr = &(vptr->tx.rings[qnum][prev]);
 		td_ptr->td_buf[0].size |= TD_QUEUE;
 		mac_tx_queue_wake(vptr->mac_regs, qnum);
 	}
 	dev->trans_start = jiffies;
 	spin_unlock_irqrestore(&vptr->lock, flags);
-	return 0;
+out:
+	return NETDEV_TX_OK;
 }
 
 /**
@@ -3452,8 +3446,8 @@ static int velocity_resume(struct pci_dev *pdev)
 
 	velocity_tx_srv(vptr, 0);
 
-	for (i = 0; i < vptr->num_txq; i++) {
-		if (vptr->td_used[i]) {
+	for (i = 0; i < vptr->tx.numq; i++) {
+		if (vptr->tx.used[i]) {
 			mac_tx_queue_wake(vptr->mac_regs, i);
 		}
 	}