Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next

Pull networking changes from David Miller:

1) Allow to dump, monitor, and change the bridge multicast database
   using netlink.  From Cong Wang.

2) RFC 5961 TCP blind data injection attack mitigation, from Eric
   Dumazet.

3) Networking user namespace support from Eric W. Biederman.

4) tuntap/virtio-net multiqueue support by Jason Wang.

5) Support for checksum offload of encapsulated packets (basically,
   tunneled traffic can still be checksummed by HW).  From Joseph
   Gasparakis.

6) Allow BPF filter access to VLAN tags, from Eric Dumazet and
   Daniel Borkmann.

7) Bridge port parameters over netlink and BPDU blocking support
   from Stephen Hemminger.

8) Improve data access patterns during inet socket demux by rearranging
   socket layout, from Eric Dumazet.

9) TIPC protocol updates and cleanups from Ying Xue, Paul Gortmaker, and
   Jon Maloy.

10) Update TCP socket hash sizing to be more in line with current day
    realities.  The existing heurstics were choosen a decade ago.
    From Eric Dumazet.

11) Fix races, queue bloat, and excessive wakeups in ATM and
    associated drivers, from Krzysztof Mazur and David Woodhouse.

12) Support DOVE (Distributed Overlay Virtual Ethernet) extensions
    in VXLAN driver, from David Stevens.

13) Add "oops_only" mode to netconsole, from Amerigo Wang.

14) Support set and query of VEB/VEPA bridge mode via PF_BRIDGE, also
    allow DCB netlink to work on namespaces other than the initial
    namespace.  From John Fastabend.

15) Support PTP in the Tigon3 driver, from Matt Carlson.

16) tun/vhost zero copy fixes and improvements, plus turn it on
    by default, from Michael S. Tsirkin.

17) Support per-association statistics in SCTP, from Michele
    Baldessari.

And many, many, driver updates, cleanups, and improvements.  Too
numerous to mention individually.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1722 commits)
  net/mlx4_en: Add support for destination MAC in steering rules
  net/mlx4_en: Use generic etherdevice.h functions.
  net: ethtool: Add destination MAC address to flow steering API
  bridge: add support of adding and deleting mdb entries
  bridge: notify mdb changes via netlink
  ndisc: Unexport ndisc_{build,send}_skb().
  uapi: add missing netconf.h to export list
  pkt_sched: avoid requeues if possible
  solos-pci: fix double-free of TX skb in DMA mode
  bnx2: Fix accidental reversions.
  bna: Driver Version Updated to 3.1.2.1
  bna: Firmware update
  bna: Add RX State
  bna: Rx Page Based Allocation
  bna: TX Intr Coalescing Fix
  bna: Tx and Rx Optimizations
  bna: Code Cleanup and Enhancements
  ath9k: check pdata variable before dereferencing it
  ath5k: RX timestamp is reported at end of frame
  ath9k_htc: RX timestamp is reported at end of frame
  ...

1 files changed, 35 insertions, 53 deletions

diff --git a/drivers/atm/solos-pci.c b/drivers/atm/solos-pci.c
index 98510931c81..c909b7b7d5f 100644
--- a/drivers/atm/solos-pci.c
+++ b/drivers/atm/solos-pci.c
@@ -164,7 +164,6 @@ static void fpga_queue(struct solos_card *card, int port, struct sk_buff *skb,
 static uint32_t fpga_tx(struct solos_card *);
 static irqreturn_t solos_irq(int irq, void *dev_id);
 static struct atm_vcc* find_vcc(struct atm_dev *dev, short vpi, int vci);
-static int list_vccs(int vci);
 static int atm_init(struct solos_card *, struct device *);
 static void atm_remove(struct solos_card *);
 static int send_command(struct solos_card *card, int dev, const char *buf, size_t size);
@@ -710,7 +709,8 @@ void solos_bh(unsigned long card_arg)
 						dev_warn(&card->dev->dev, "Received packet for unknown VPI.VCI %d.%d on port %d\n",
 							 le16_to_cpu(header->vpi), le16_to_cpu(header->vci),
 							 port);
-					continue;
+					dev_kfree_skb_any(skb);
+					break;
 				}
 				atm_charge(vcc, skb->truesize);
 				vcc->push(vcc, skb);
@@ -790,44 +790,6 @@ static struct atm_vcc *find_vcc(struct atm_dev *dev, short vpi, int vci)
 	return vcc;
 }
 
-static int list_vccs(int vci)
-{
-	struct hlist_head *head;
-	struct atm_vcc *vcc;
-	struct hlist_node *node;
-	struct sock *s;
-	int num_found = 0;
-	int i;
-
-	read_lock(&vcc_sklist_lock);
-	if (vci != 0){
-		head = &vcc_hash[vci & (VCC_HTABLE_SIZE -1)];
-		sk_for_each(s, node, head) {
-			num_found ++;
-			vcc = atm_sk(s);
-			printk(KERN_DEBUG "Device: %d Vpi: %d Vci: %d\n",
-			       vcc->dev->number,
-			       vcc->vpi,
-			       vcc->vci);
-		}
-	} else {
-		for(i = 0; i < VCC_HTABLE_SIZE; i++){
-			head = &vcc_hash[i];
-			sk_for_each(s, node, head) {
-				num_found ++;
-				vcc = atm_sk(s);
-				printk(KERN_DEBUG "Device: %d Vpi: %d Vci: %d\n",
-				       vcc->dev->number,
-				       vcc->vpi,
-				       vcc->vci);
-			}
-		}
-	}
-	read_unlock(&vcc_sklist_lock);
-	return num_found;
-}
-
-
 static int popen(struct atm_vcc *vcc)
 {
 	struct solos_card *card = vcc->dev->dev_data;
@@ -840,7 +802,7 @@ static int popen(struct atm_vcc *vcc)
 		return -EINVAL;
 	}
 
-	skb = alloc_skb(sizeof(*header), GFP_ATOMIC);
+	skb = alloc_skb(sizeof(*header), GFP_KERNEL);
 	if (!skb) {
 		if (net_ratelimit())
 			dev_warn(&card->dev->dev, "Failed to allocate sk_buff in popen()\n");
@@ -857,8 +819,6 @@ static int popen(struct atm_vcc *vcc)
 
 	set_bit(ATM_VF_ADDR, &vcc->flags);
 	set_bit(ATM_VF_READY, &vcc->flags);
-	list_vccs(0);
-
 
 	return 0;
 }
@@ -866,10 +826,21 @@ static int popen(struct atm_vcc *vcc)
 static void pclose(struct atm_vcc *vcc)
 {
 	struct solos_card *card = vcc->dev->dev_data;
-	struct sk_buff *skb;
+	unsigned char port = SOLOS_CHAN(vcc->dev);
+	struct sk_buff *skb, *tmpskb;
 	struct pkt_hdr *header;
 
-	skb = alloc_skb(sizeof(*header), GFP_ATOMIC);
+	/* Remove any yet-to-be-transmitted packets from the pending queue */
+	spin_lock(&card->tx_queue_lock);
+	skb_queue_walk_safe(&card->tx_queue[port], skb, tmpskb) {
+		if (SKB_CB(skb)->vcc == vcc) {
+			skb_unlink(skb, &card->tx_queue[port]);
+			solos_pop(vcc, skb);
+		}
+	}
+	spin_unlock(&card->tx_queue_lock);
+
+	skb = alloc_skb(sizeof(*header), GFP_KERNEL);
 	if (!skb) {
 		dev_warn(&card->dev->dev, "Failed to allocate sk_buff in pclose()\n");
 		return;
@@ -881,15 +852,22 @@ static void pclose(struct atm_vcc *vcc)
 	header->vci = cpu_to_le16(vcc->vci);
 	header->type = cpu_to_le16(PKT_PCLOSE);
 
-	fpga_queue(card, SOLOS_CHAN(vcc->dev), skb, NULL);
+	skb_get(skb);
+	fpga_queue(card, port, skb, NULL);
 
-	clear_bit(ATM_VF_ADDR, &vcc->flags);
-	clear_bit(ATM_VF_READY, &vcc->flags);
+	if (!wait_event_timeout(card->param_wq, !skb_shared(skb), 5 * HZ))
+		dev_warn(&card->dev->dev,
+			 "Timeout waiting for VCC close on port %d\n", port);
+
+	dev_kfree_skb(skb);
 
 	/* Hold up vcc_destroy_socket() (our caller) until solos_bh() in the
 	   tasklet has finished processing any incoming packets (and, more to
 	   the point, using the vcc pointer). */
 	tasklet_unlock_wait(&card->tlet);
+
+	clear_bit(ATM_VF_ADDR, &vcc->flags);
+
 	return;
 }
 
@@ -967,10 +945,11 @@ static uint32_t fpga_tx(struct solos_card *card)
 	for (port = 0; tx_pending; tx_pending >>= 1, port++) {
 		if (tx_pending & 1) {
 			struct sk_buff *oldskb = card->tx_skb[port];
-			if (oldskb)
+			if (oldskb) {
 				pci_unmap_single(card->dev, SKB_CB(oldskb)->dma_addr,
 						 oldskb->len, PCI_DMA_TODEVICE);
-
+				card->tx_skb[port] = NULL;
+			}
 			spin_lock(&card->tx_queue_lock);
 			skb = skb_dequeue(&card->tx_queue[port]);
 			if (!skb)
@@ -1011,9 +990,10 @@ static uint32_t fpga_tx(struct solos_card *card)
 			if (vcc) {
 				atomic_inc(&vcc->stats->tx);
 				solos_pop(vcc, oldskb);
-			} else
+			} else {
 				dev_kfree_skb_irq(oldskb);
-
+				wake_up(&card->param_wq);
+			}
 		}
 	}
 	/* For non-DMA TX, write the 'TX start' bit for all four ports simultaneously */
@@ -1248,7 +1228,7 @@ static int atm_init(struct solos_card *card, struct device *parent)
 		card->atmdev[i]->phy_data = (void *)(unsigned long)i;
 		atm_dev_signal_change(card->atmdev[i], ATM_PHY_SIG_FOUND);
 
-		skb = alloc_skb(sizeof(*header), GFP_ATOMIC);
+		skb = alloc_skb(sizeof(*header), GFP_KERNEL);
 		if (!skb) {
 			dev_warn(&card->dev->dev, "Failed to allocate sk_buff in atm_init()\n");
 			continue;
@@ -1345,6 +1325,8 @@ static struct pci_driver fpga_driver = {
 
 static int __init solos_pci_init(void)
 {
+	BUILD_BUG_ON(sizeof(struct solos_skb_cb) > sizeof(((struct sk_buff *)0)->cb));
+
 	printk(KERN_INFO "Solos PCI Driver Version %s\n", VERSION);
 	return pci_register_driver(&fpga_driver);
 }