patch-2.4.22 linux-2.4.22/drivers/atm/eni.c

• Lines: 111
• Date: 2003-08-25 04:44:41.000000000 -0700
• Orig file: linux-2.4.21/drivers/atm/eni.c
• Orig date: 2001-12-21 09:41:53.000000000 -0800

diff -urN linux-2.4.21/drivers/atm/eni.c linux-2.4.22/drivers/atm/eni.c
@@ -1101,9 +1101,9 @@
 	dma_rd = eni_in(MID_DMA_RD_TX);
 	dma_size = 3; /* JK for descriptor and final fill, plus final size
 			 mis-alignment fix */
-DPRINTK("iovcnt = %d\n",ATM_SKB(skb)->iovcnt);
-	if (!ATM_SKB(skb)->iovcnt) dma_size += 5;
-	else dma_size += 5*ATM_SKB(skb)->iovcnt;
+DPRINTK("iovcnt = %d\n",skb_shinfo(skb)->nr_frags);
+	if (!skb_shinfo(skb)->nr_frags) dma_size += 5;
+	else dma_size += 5*(skb_shinfo(skb)->nr_frags+1);
 	if (dma_size > TX_DMA_BUF) {
 		printk(KERN_CRIT DEV_LABEL "(itf %d): needs %d DMA entries "
 		    "(got only %d)\n",vcc->dev->number,dma_size,TX_DMA_BUF);
@@ -1124,15 +1124,20 @@
 	     MID_DMA_COUNT_SHIFT) | (tx->index << MID_DMA_CHAN_SHIFT) |
 	     MID_DT_JK;
 	j++;
-	if (!ATM_SKB(skb)->iovcnt)
+	if (!skb_shinfo(skb)->nr_frags)
 		if (aal5) put_dma(tx->index,eni_dev->dma,&j,paddr,skb->len);
 		else put_dma(tx->index,eni_dev->dma,&j,paddr+4,skb->len-4);
 	else {
 DPRINTK("doing direct send\n"); /* @@@ well, this doesn't work anyway */
-		for (i = 0; i < ATM_SKB(skb)->iovcnt; i++)
-			put_dma(tx->index,eni_dev->dma,&j,(unsigned long)
-			    ((struct iovec *) skb->data)[i].iov_base,
-			    ((struct iovec *) skb->data)[i].iov_len);
+		for (i = -1; i < skb_shinfo(skb)->nr_frags; i++)
+			if (i == -1)
+				put_dma(tx->index,eni_dev->dma,&j,(unsigned long)
+				    skb->data,
+				    skb->len - skb->data_len);
+			else
+				put_dma(tx->index,eni_dev->dma,&j,(unsigned long)
+				    skb_shinfo(skb)->frags[i].page + skb_shinfo(skb)->frags[i].page_offset,
+				    skb_shinfo(skb)->frags[i].size);
 	}
 	if (skb->len & 3)
 		put_dma(tx->index,eni_dev->dma,&j,zeroes,4-(skb->len & 3));
@@ -1882,8 +1887,10 @@
 
 static int get_ci(struct atm_vcc *vcc,short *vpi,int *vci)
 {
+	unsigned long flags;
 	struct atm_vcc *walk;
 
+	spin_lock_irqsave(&vcc->dev->lock, flags);
 	if (*vpi == ATM_VPI_ANY) *vpi = 0;
 	if (*vci == ATM_VCI_ANY) {
 		for (*vci = ATM_NOT_RSV_VCI; *vci < NR_VCI; (*vci)++) {
@@ -1902,17 +1909,29 @@
 			}
 			break;
 		}
+		spin_unlock_irqrestore(&vcc->dev->lock, flags);
 		return *vci == NR_VCI ? -EADDRINUSE : 0;
 	}
-	if (*vci == ATM_VCI_UNSPEC) return 0;
+	if (*vci == ATM_VCI_UNSPEC) {
+		spin_unlock_irqrestore(&vcc->dev->lock, flags);
+		return 0;
+	}
 	if (vcc->qos.rxtp.traffic_class != ATM_NONE &&
-	    ENI_DEV(vcc->dev)->rx_map[*vci])
+	    ENI_DEV(vcc->dev)->rx_map[*vci]) {
+		spin_unlock_irqrestore(&vcc->dev->lock, flags);
 		return -EADDRINUSE;
-	if (vcc->qos.txtp.traffic_class == ATM_NONE) return 0;
+	}
+	if (vcc->qos.txtp.traffic_class == ATM_NONE) {
+		spin_unlock_irqrestore(&vcc->dev->lock, flags);
+		return 0;
+	}
 	for (walk = vcc->dev->vccs; walk; walk = walk->next)
 		if (test_bit(ATM_VF_ADDR,&walk->flags) && walk->vci == *vci &&
-		    walk->qos.txtp.traffic_class != ATM_NONE)
+		    walk->qos.txtp.traffic_class != ATM_NONE) {
+			spin_unlock_irqrestore(&vcc->dev->lock, flags);
 			return -EADDRINUSE;
+		}
+	spin_unlock_irqrestore(&vcc->dev->lock, flags);
 	return 0;
 }
 
@@ -2120,6 +2139,7 @@
 
 static int eni_proc_read(struct atm_dev *dev,loff_t *pos,char *page)
 {
+	unsigned long flags;
 	static const char *signal[] = { "LOST","unknown","okay" };
 	struct eni_dev *eni_dev = ENI_DEV(dev);
 	struct atm_vcc *vcc;
@@ -2192,6 +2212,7 @@
 		return sprintf(page,"%10sbacklog %u packets\n","",
 		    skb_queue_len(&tx->backlog));
 	}
+	spin_lock_irqsave(&dev->lock, flags);
 	for (vcc = dev->vccs; vcc; vcc = vcc->next) {
 		struct eni_vcc *eni_vcc = ENI_VCC(vcc);
 		int length;
@@ -2210,8 +2231,10 @@
 			length += sprintf(page+length,"tx[%d], txing %d bytes",
 			    eni_vcc->tx->index,eni_vcc->txing);
 		page[length] = '\n';
+		spin_unlock_irqrestore(&dev->lock, flags);
 		return length+1;
 	}
+	spin_unlock_irqrestore(&dev->lock, flags);
 	for (i = 0; i < eni_dev->free_len; i++) {
 		struct eni_free *fe = eni_dev->free_list+i;
 		unsigned long offset;