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

Pull networking fixes from David Miller:

 1) cfg80211_conn_scan() must be called with the sched_scan_mutex, fix
    from Artem Savkov.

 2) Fix regression in TCP ICMPv6 processing, we do not want to treat
    redirects as socket errors, from Christoph Paasch.

 3) Fix several recvmsg() msg_name kernel memory leaks into userspace,
    in ATM, AX25, Bluetooth, CAIF, IRDA, s390 IUCV, L2TP, LLC, Netrom,
    NFC, Rose, TIPC, and VSOCK.  From Mathias Krause and Wei Yongjun.

 4) Fix AF_IUCV handling of segmented SKBs in recvmsg(), from Ursula
    Braun and Eric Dumazet.

 5) CAN gw.c code does kfree() on SLAB cache memory, use
    kmem_cache_free() instead.  Fix from Wei Yongjun.

 6) Fix LSM regression on TCP SYN/ACKs, some LSMs such as SELINUX want
    an skb->sk socket context available for these packets, but nothing
    else requires it.  From Eric Dumazet and Paul Moore.

 7) Fix ipv4 address lifetime processing so that we don't perform
    sleepable acts inside of rcu_read_lock() sections, do them in an
    rtnl_lock() section instead.  From Jiri Pirko.

 8) mvneta driver accidently sets HW features after device registry, it
    should do so beforehand.  Fix from Willy Tarreau.

 9) Fix bonding unload races more correctly, from Nikolay Aleksandrov
    and Veaceslav Falico.

10) rtnl_dump_ifinfo() and rtnl_calcit() invoke nlmsg_parse() with wrong
    header size argument.  Fix from Michael Riesch.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (44 commits)
  lsm: add the missing documentation for the security_skb_owned_by() hook
  bnx2x: Prevent null pointer dereference in AFEX mode
  e100: Add dma mapping error check
  selinux: add a skb_owned_by() hook
  can: gw: use kmem_cache_free() instead of kfree()
  netrom: fix invalid use of sizeof in nr_recvmsg()
  qeth: fix qeth_wait_for_threads() deadlock for OSN devices
  af_iucv: fix recvmsg by replacing skb_pull() function
  rtnetlink: Call nlmsg_parse() with correct header length
  bonding: fix bonding_masters race condition in bond unloading
  Revert "bonding: remove sysfs before removing devices"
  net: mvneta: enable features before registering the driver
  hyperv: Fix RNDIS send_completion code path
  hyperv: Fix a kernel warning from netvsc_linkstatus_callback()
  net: ipv4: fix schedule while atomic bug in check_lifetime()
  net: ipv4: reset check_lifetime_work after changing lifetime
  bnx2x: Fix KR2 rapid link flap
  sctp: remove 'sridhar' from maintainers list
  VSOCK: Fix missing msg_namelen update in vsock_stream_recvmsg()
  VSOCK: vmci - fix possible info leak in vmci_transport_dgram_dequeue()
  ...

1 files changed, 25 insertions, 11 deletions

diff --git a/drivers/net/ethernet/intel/e100.c b/drivers/net/ethernet/intel/e100.c
index ec800b093e7..d2bea3f07c7 100644
--- a/drivers/net/ethernet/intel/e100.c
+++ b/drivers/net/ethernet/intel/e100.c
@@ -870,7 +870,7 @@ err_unlock:
 }
 
 static int e100_exec_cb(struct nic *nic, struct sk_buff *skb,
-	void (*cb_prepare)(struct nic *, struct cb *, struct sk_buff *))
+	int (*cb_prepare)(struct nic *, struct cb *, struct sk_buff *))
 {
 	struct cb *cb;
 	unsigned long flags;
@@ -888,10 +888,13 @@ static int e100_exec_cb(struct nic *nic, struct sk_buff *skb,
 	nic->cbs_avail--;
 	cb->skb = skb;
 
+	err = cb_prepare(nic, cb, skb);
+	if (err)
+		goto err_unlock;
+
 	if (unlikely(!nic->cbs_avail))
 		err = -ENOSPC;
 
-	cb_prepare(nic, cb, skb);
 
 	/* Order is important otherwise we'll be in a race with h/w:
 	 * set S-bit in current first, then clear S-bit in previous. */
@@ -1091,7 +1094,7 @@ static void e100_get_defaults(struct nic *nic)
 	nic->mii.mdio_write = mdio_write;
 }
 
-static void e100_configure(struct nic *nic, struct cb *cb, struct sk_buff *skb)
+static int e100_configure(struct nic *nic, struct cb *cb, struct sk_buff *skb)
 {
 	struct config *config = &cb->u.config;
 	u8 *c = (u8 *)config;
@@ -1181,6 +1184,7 @@ static void e100_configure(struct nic *nic, struct cb *cb, struct sk_buff *skb)
 	netif_printk(nic, hw, KERN_DEBUG, nic->netdev,
 		     "[16-23]=%02X:%02X:%02X:%02X:%02X:%02X:%02X:%02X\n",
 		     c[16], c[17], c[18], c[19], c[20], c[21], c[22], c[23]);
+	return 0;
 }
 
 /*************************************************************************
@@ -1331,7 +1335,7 @@ static const struct firmware *e100_request_firmware(struct nic *nic)
 	return fw;
 }
 
-static void e100_setup_ucode(struct nic *nic, struct cb *cb,
+static int e100_setup_ucode(struct nic *nic, struct cb *cb,
 			     struct sk_buff *skb)
 {
 	const struct firmware *fw = (void *)skb;
@@ -1358,6 +1362,7 @@ static void e100_setup_ucode(struct nic *nic, struct cb *cb,
 	cb->u.ucode[min_size] |= cpu_to_le32((BUNDLESMALL) ? 0xFFFF : 0xFF80);
 
 	cb->command = cpu_to_le16(cb_ucode | cb_el);
+	return 0;
 }
 
 static inline int e100_load_ucode_wait(struct nic *nic)
@@ -1400,18 +1405,20 @@ static inline int e100_load_ucode_wait(struct nic *nic)
 	return err;
 }
 
-static void e100_setup_iaaddr(struct nic *nic, struct cb *cb,
+static int e100_setup_iaaddr(struct nic *nic, struct cb *cb,
 	struct sk_buff *skb)
 {
 	cb->command = cpu_to_le16(cb_iaaddr);
 	memcpy(cb->u.iaaddr, nic->netdev->dev_addr, ETH_ALEN);
+	return 0;
 }
 
-static void e100_dump(struct nic *nic, struct cb *cb, struct sk_buff *skb)
+static int e100_dump(struct nic *nic, struct cb *cb, struct sk_buff *skb)
 {
 	cb->command = cpu_to_le16(cb_dump);
 	cb->u.dump_buffer_addr = cpu_to_le32(nic->dma_addr +
 		offsetof(struct mem, dump_buf));
+	return 0;
 }
 
 static int e100_phy_check_without_mii(struct nic *nic)
@@ -1581,7 +1588,7 @@ static int e100_hw_init(struct nic *nic)
 	return 0;
 }
 
-static void e100_multi(struct nic *nic, struct cb *cb, struct sk_buff *skb)
+static int e100_multi(struct nic *nic, struct cb *cb, struct sk_buff *skb)
 {
 	struct net_device *netdev = nic->netdev;
 	struct netdev_hw_addr *ha;
@@ -1596,6 +1603,7 @@ static void e100_multi(struct nic *nic, struct cb *cb, struct sk_buff *skb)
 		memcpy(&cb->u.multi.addr[i++ * ETH_ALEN], &ha->addr,
 			ETH_ALEN);
 	}
+	return 0;
 }
 
 static void e100_set_multicast_list(struct net_device *netdev)
@@ -1756,11 +1764,18 @@ static void e100_watchdog(unsigned long data)
 		  round_jiffies(jiffies + E100_WATCHDOG_PERIOD));
 }
 
-static void e100_xmit_prepare(struct nic *nic, struct cb *cb,
+static int e100_xmit_prepare(struct nic *nic, struct cb *cb,
 	struct sk_buff *skb)
 {
+	dma_addr_t dma_addr;
 	cb->command = nic->tx_command;
 
+	dma_addr = pci_map_single(nic->pdev,
+				  skb->data, skb->len, PCI_DMA_TODEVICE);
+	/* If we can't map the skb, have the upper layer try later */
+	if (pci_dma_mapping_error(nic->pdev, dma_addr))
+		return -ENOMEM;
+
 	/*
 	 * Use the last 4 bytes of the SKB payload packet as the CRC, used for
 	 * testing, ie sending frames with bad CRC.
@@ -1777,11 +1792,10 @@ static void e100_xmit_prepare(struct nic *nic, struct cb *cb,
 	cb->u.tcb.tcb_byte_count = 0;
 	cb->u.tcb.threshold = nic->tx_threshold;
 	cb->u.tcb.tbd_count = 1;
-	cb->u.tcb.tbd.buf_addr = cpu_to_le32(pci_map_single(nic->pdev,
-		skb->data, skb->len, PCI_DMA_TODEVICE));
-	/* check for mapping failure? */
+	cb->u.tcb.tbd.buf_addr = cpu_to_le32(dma_addr);
 	cb->u.tcb.tbd.size = cpu_to_le16(skb->len);
 	skb_tx_timestamp(skb);
+	return 0;
 }
 
 static netdev_tx_t e100_xmit_frame(struct sk_buff *skb,