X-Git-Url: http://ftp.safe.ca/?a=blobdiff_plain;f=net%2Fcore%2Fnetpoll.c;h=9675f312830dd762bcd530eee90569de5a89b320;hb=7762f206a3f3a19a38ed91a3d87f019d8b4eafc1;hp=b04d643fc3c704cf21619251713ca190f3986554;hpb=a25606c845856e5ca5ed54d23cab077e3a49bf10;p=safe%2Fjmp%2Flinux-2.6

diff --git a/net/core/netpoll.c b/net/core/netpoll.c
index b04d643..9675f31 100644
--- a/net/core/netpoll.c
+++ b/net/core/netpoll.c
@@ -24,6 +24,7 @@
 #include <net/tcp.h>
 #include <net/udp.h>
 #include <asm/unaligned.h>
+#include <trace/events/napi.h>
 
 /*
  * We maintain a small pool of fully-sized skbs, to make sure the
@@ -58,25 +59,29 @@ static void queue_process(struct work_struct *work)
 
 	while ((skb = skb_dequeue(&npinfo->txq))) {
 		struct net_device *dev = skb->dev;
+		const struct net_device_ops *ops = dev->netdev_ops;
+		struct netdev_queue *txq;
 
 		if (!netif_device_present(dev) || !netif_running(dev)) {
 			__kfree_skb(skb);
 			continue;
 		}
 
+		txq = netdev_get_tx_queue(dev, skb_get_queue_mapping(skb));
+
 		local_irq_save(flags);
-		netif_tx_lock(dev);
-		if ((netif_queue_stopped(dev) ||
-		     netif_subqueue_stopped(dev, skb)) ||
-		     dev->hard_start_xmit(skb, dev) != NETDEV_TX_OK) {
+		__netif_tx_lock(txq, smp_processor_id());
+		if (netif_tx_queue_stopped(txq) ||
+		    netif_tx_queue_frozen(txq) ||
+		    ops->ndo_start_xmit(skb, dev) != NETDEV_TX_OK) {
 			skb_queue_head(&npinfo->txq, skb);
-			netif_tx_unlock(dev);
+			__netif_tx_unlock(txq);
 			local_irq_restore(flags);
 
 			schedule_delayed_work(&npinfo->tx_work, HZ/10);
 			return;
 		}
-		netif_tx_unlock(dev);
+		__netif_tx_unlock(txq);
 		local_irq_restore(flags);
 	}
 }
@@ -130,9 +135,12 @@ static int poll_one_napi(struct netpoll_info *npinfo,
 
 	npinfo->rx_flags |= NETPOLL_RX_DROP;
 	atomic_inc(&trapped);
+	set_bit(NAPI_STATE_NPSVC, &napi->state);
 
 	work = napi->poll(napi, budget);
+	trace_napi_poll(napi);
 
+	clear_bit(NAPI_STATE_NPSVC, &napi->state);
 	atomic_dec(&trapped);
 	npinfo->rx_flags &= ~NETPOLL_RX_DROP;
 
@@ -169,12 +177,17 @@ static void service_arp_queue(struct netpoll_info *npi)
 void netpoll_poll(struct netpoll *np)
 {
 	struct net_device *dev = np->dev;
+	const struct net_device_ops *ops;
+
+	if (!dev || !netif_running(dev))
+		return;
 
-	if (!dev || !netif_running(dev) || !dev->poll_controller)
+	ops = dev->netdev_ops;
+	if (!ops->ndo_poll_controller)
 		return;
 
 	/* Process pending work on NIC */
-	dev->poll_controller(dev);
+	ops->ndo_poll_controller(dev);
 
 	poll_napi(dev);
 
@@ -269,6 +282,7 @@ static void netpoll_send_skb(struct netpoll *np, struct sk_buff *skb)
 	int status = NETDEV_TX_BUSY;
 	unsigned long tries;
 	struct net_device *dev = np->dev;
+	const struct net_device_ops *ops = dev->netdev_ops;
 	struct netpoll_info *npinfo = np->dev->npinfo;
 
 	if (!npinfo || !netif_running(dev) || !netif_device_present(dev)) {
@@ -278,17 +292,22 @@ static void netpoll_send_skb(struct netpoll *np, struct sk_buff *skb)
 
 	/* don't get messages out of order, and no recursion */
 	if (skb_queue_len(&npinfo->txq) == 0 && !netpoll_owner_active(dev)) {
+		struct netdev_queue *txq;
 		unsigned long flags;
 
+		txq = netdev_get_tx_queue(dev, skb_get_queue_mapping(skb));
+
 		local_irq_save(flags);
 		/* try until next clock tick */
 		for (tries = jiffies_to_usecs(1)/USEC_PER_POLL;
 		     tries > 0; --tries) {
-			if (netif_tx_trylock(dev)) {
-				if (!netif_queue_stopped(dev) &&
-				    !netif_subqueue_stopped(dev, skb))
-					status = dev->hard_start_xmit(skb, dev);
-				netif_tx_unlock(dev);
+			if (__netif_tx_trylock(txq)) {
+				if (!netif_tx_queue_stopped(txq)) {
+					status = ops->ndo_start_xmit(skb, dev);
+					if (status == NETDEV_TX_OK)
+						txq_trans_update(txq);
+				}
+				__netif_tx_unlock(txq);
 
 				if (status == NETDEV_TX_OK)
 					break;
@@ -335,10 +354,10 @@ void netpoll_send_udp(struct netpoll *np, const char *msg, int len)
 	udph->dest = htons(np->remote_port);
 	udph->len = htons(udp_len);
 	udph->check = 0;
-	udph->check = csum_tcpudp_magic(htonl(np->local_ip),
-					htonl(np->remote_ip),
+	udph->check = csum_tcpudp_magic(np->local_ip,
+					np->remote_ip,
 					udp_len, IPPROTO_UDP,
-					csum_partial((unsigned char *)udph, udp_len, 0));
+					csum_partial(udph, udp_len, 0));
 	if (udph->check == 0)
 		udph->check = CSUM_MANGLED_0;
 
@@ -355,8 +374,8 @@ void netpoll_send_udp(struct netpoll *np, const char *msg, int len)
 	iph->ttl      = 64;
 	iph->protocol = IPPROTO_UDP;
 	iph->check    = 0;
-	put_unaligned(htonl(np->local_ip), &(iph->saddr));
-	put_unaligned(htonl(np->remote_ip), &(iph->daddr));
+	put_unaligned(np->local_ip, &(iph->saddr));
+	put_unaligned(np->remote_ip, &(iph->daddr));
 	iph->check    = ip_fast_csum((unsigned char *)iph, iph->ihl);
 
 	eth = (struct ethhdr *) skb_push(skb, ETH_HLEN);
@@ -414,12 +433,12 @@ static void arp_reply(struct sk_buff *skb)
 	memcpy(&tip, arp_ptr, 4);
 
 	/* Should we ignore arp? */
-	if (tip != htonl(np->local_ip) ||
+	if (tip != np->local_ip ||
 	    ipv4_is_loopback(tip) || ipv4_is_multicast(tip))
 		return;
 
 	size = arp_hdr_len(skb->dev);
-	send_skb = find_skb(np, size + LL_RESERVED_SPACE(np->dev),
+	send_skb = find_skb(np, size + LL_ALLOCATED_SPACE(np->dev),
 			    LL_RESERVED_SPACE(np->dev));
 
 	if (!send_skb)
@@ -523,9 +542,9 @@ int __netpoll_rx(struct sk_buff *skb)
 		goto out;
 	if (checksum_udp(skb, uh, ulen, iph->saddr, iph->daddr))
 		goto out;
-	if (np->local_ip && np->local_ip != ntohl(iph->daddr))
+	if (np->local_ip && np->local_ip != iph->daddr)
 		goto out;
-	if (np->remote_ip && np->remote_ip != ntohl(iph->saddr))
+	if (np->remote_ip && np->remote_ip != iph->saddr)
 		goto out;
 	if (np->local_port && np->local_port != ntohs(uh->dest))
 		goto out;
@@ -548,19 +567,18 @@ out:
 
 void netpoll_print_options(struct netpoll *np)
 {
-	DECLARE_MAC_BUF(mac);
 	printk(KERN_INFO "%s: local port %d\n",
 			 np->name, np->local_port);
-	printk(KERN_INFO "%s: local IP %d.%d.%d.%d\n",
-			 np->name, HIPQUAD(np->local_ip));
+	printk(KERN_INFO "%s: local IP %pI4\n",
+			 np->name, &np->local_ip);
 	printk(KERN_INFO "%s: interface %s\n",
 			 np->name, np->dev_name);
 	printk(KERN_INFO "%s: remote port %d\n",
 			 np->name, np->remote_port);
-	printk(KERN_INFO "%s: remote IP %d.%d.%d.%d\n",
-			 np->name, HIPQUAD(np->remote_ip));
-	printk(KERN_INFO "%s: remote ethernet address %s\n",
-	                 np->name, print_mac(mac, np->remote_mac));
+	printk(KERN_INFO "%s: remote IP %pI4\n",
+			 np->name, &np->remote_ip);
+	printk(KERN_INFO "%s: remote ethernet address %pM\n",
+	                 np->name, np->remote_mac);
 }
 
 int netpoll_parse_options(struct netpoll *np, char *opt)
@@ -580,7 +598,7 @@ int netpoll_parse_options(struct netpoll *np, char *opt)
 		if ((delim = strchr(cur, '/')) == NULL)
 			goto parse_failed;
 		*delim = 0;
-		np->local_ip = ntohl(in_aton(cur));
+		np->local_ip = in_aton(cur);
 		cur = delim;
 	}
 	cur++;
@@ -609,7 +627,7 @@ int netpoll_parse_options(struct netpoll *np, char *opt)
 	if ((delim = strchr(cur, '/')) == NULL)
 		goto parse_failed;
 	*delim = 0;
-	np->remote_ip = ntohl(in_aton(cur));
+	np->remote_ip = in_aton(cur);
 	cur = delim + 1;
 
 	if (*cur != 0) {
@@ -690,7 +708,7 @@ int netpoll_setup(struct netpoll *np)
 		atomic_inc(&npinfo->refcnt);
 	}
 
-	if (!ndev->poll_controller) {
+	if (!ndev->netdev_ops->ndo_poll_controller) {
 		printk(KERN_ERR "%s: %s doesn't support polling, aborting.\n",
 		       np->name, np->dev_name);
 		err = -ENOTSUPP;
@@ -750,10 +768,9 @@ int netpoll_setup(struct netpoll *np)
 			goto release;
 		}
 
-		np->local_ip = ntohl(in_dev->ifa_list->ifa_local);
+		np->local_ip = in_dev->ifa_list->ifa_local;
 		rcu_read_unlock();
-		printk(KERN_INFO "%s: local IP %d.%d.%d.%d\n",
-		       np->name, HIPQUAD(np->local_ip));
+		printk(KERN_INFO "%s: local IP %pI4\n", np->name, &np->local_ip);
 	}
 
 	if (np->rx_hook) {