linux/drivers/net/hyperv, branch v3.3

net/hyperv: fix erroneous NETDEV_TX_BUSY use

2012-03-16T09:01:17Z

A driver start_xmit() method cannot free skb and return NETDEV_TX_BUSY, since caller is going to reuse freed skb. This is mostly a revert of commit bf769375c (staging: hv: fix the return status of netvsc_start_xmit()) In fact netif_tx_stop_queue() / netif_stop_queue() is needed before returning NETDEV_TX_BUSY or you can trigger a ksoftirqd fatal loop. In case of memory allocation error, only safe way is to drop the packet and return NETDEV_TX_OK Signed-off-by: Eric Dumazet Cc: "K. Y. Srinivasan" Cc: Haiyang Zhang Cc: Greg Kroah-Hartman Reviewed-by: Haiyang Zhang Signed-off-by: David S. Miller

net/hyperv: Use the built-in macro KBUILD_MODNAME for this driver

2012-03-08T21:55:27Z

Signed-off-by: Haiyang Zhang Signed-off-by: K. Y. Srinivasan Cc: Olaf Hering Signed-off-by: David S. Miller

net/hyperv: Fix the page buffer when an RNDIS message goes beyond page boundary

2012-02-02T19:35:12Z

There is a possible data corruption if an RNDIS message goes beyond page boundary in the sending code path. This patch fixes the problem. Signed-off-by: Haiyang Zhang Signed-off-by: K. Y. Srinivasan Signed-off-by: David S. Miller

net/hyperv: Use netif_tx_disable() instead of netif_stop_queue() when necessary

2012-02-02T19:35:12Z

For code path not on the xmit, use netif_tx_disable() instead of netif_stop_queue() to ensure other CPUs are not doing xmit. Signed-off-by: Haiyang Zhang Signed-off-by: K. Y. Srinivasan Signed-off-by: David S. Miller

net/hyperv: fix the issue that large packets be dropped under bridge

2012-02-02T19:35:12Z

The packets with size larger than 1452 will be dropped by bridge which with two hyperv netdevice ports. This cause by hyperv netvsc driver always copy the trailer padding to the data packet, and then the skb received from netdevice may include wrong skb->len (20 bytes larger than the real size normally). The captured packet may like this: Ethernet II, Src: Microsof_00:00:07 (00:15:5d:00:00:07), Dst: HewlettP_00:00:4e (00:1f:29:00:00:4e) Destination: HewlettP_e6:00:4e (00:1f:29:00:00:4e) Source: Microsof_f6:6d:07 (00:15:5d:f6:6d:07) Type: IP (0x0800) Trailer: 1415161718191A1B1C1D1E1F20212223 Frame check sequence: 0x24252627 [incorrect, should be 0x7c2e5a5e] The following command help to reproduction it, and the ping ICMP packets will be dropped by bridge. $ ping ip -s 1453 This patch fixed it by removing the trailer padding from the data packet. Signed-off-by: Wei Yongjun Signed-off-by: David S. Miller

net/hyperv: rx_bytes should account the ether header size

2012-02-01T19:29:59Z

skb->len after call eth_type_trans() does not include the ether header size, but rx_bytes should account it. Signed-off-by: Wei Yongjun Signed-off-by: David S. Miller

net/hyperv: fix possible memory leak in do_set_multicast()

2012-01-24T20:47:47Z

do_set_multicast() may not free the memory malloc in netvsc_set_multicast_list(). Signed-off-by: Wei Yongjun Signed-off-by: Haiyang Zhang Signed-off-by: K. Y. Srinivasan Signed-off-by: David S. Miller

net/hyperv: Add support for jumbo frame up to 64KB

2012-01-05T00:13:05Z

Allow the user set the MTU up to 65536 for Linux guests running on Hyper-V 2008 R2 or later. Signed-off-by: Haiyang Zhang Signed-off-by: K. Y. Srinivasan Signed-off-by: Greg Kroah-Hartman

net/hyperv: Add NETVSP protocol version negotiation

2012-01-05T00:13:05Z

Automatically negotiate the highest protocol version mutually recognized by both host and guest. Signed-off-by: Haiyang Zhang Signed-off-by: K. Y. Srinivasan Signed-off-by: Greg Kroah-Hartman

net/hyperv: Remove unnecessary kmap_atomic in netvsc driver

2012-01-05T00:13:05Z

__get_free_pages() doesn't return HI memory, so the memory is always mapped. kmap_atomic() is not necessary here. This patch removes the kmap_atomic() calls and related code for locking and page manipulation. Signed-off-by: Haiyang Zhang Signed-off-by: K. Y. Srinivasan Signed-off-by: Greg Kroah-Hartman