BMC/Intel-BMC/linux.git/drivers/net/hyperv/hyperv_net.h, branch dev-4.17

hv_netvsc: fix network namespace issues with VF support

2018-08-03T05:47:33+00:00

[ Upstream commit 7bf7bb37f16a80465ee3bd7c6c966f96f5a075a6 ] When finding the parent netvsc device, the search needs to be across all netvsc device instances (independent of network namespace). Find parent device of VF using upper_dev_get routine which searches only adjacent list. Fixes: e8ff40d4bff1 ("hv_netvsc: improve VF device matching") Signed-off-by: Stephen Hemminger netns aware byref Signed-off-by: David S. Miller Signed-off-by: Sasha Levin Signed-off-by: Greg Kroah-Hartman

hv_netvsc: split sub-channel setup into async and sync

2018-07-22T13:15:59+00:00

[ Upstream commit 3ffe64f1a641b80a82d9ef4efa7a05ce69049871 ] When doing device hotplug the sub channel must be async to avoid deadlock issues because device is discovered in softirq context. When doing changes to MTU and number of channels, the setup must be synchronous to avoid races such as when MTU and device settings are done in a single ip command. Reported-by: Thomas Walker Fixes: 8195b1396ec8 ("hv_netvsc: fix deadlock on hotplug") Fixes: 732e49850c5e ("netvsc: fix race on sub channel creation") Signed-off-by: Stephen Hemminger Signed-off-by: Haiyang Zhang Signed-off-by: David S. Miller Signed-off-by: Greg Kroah-Hartman

hv_netvsc: Add range checking for rx packet offset and length

2018-03-25T21:07:40+00:00

This patch adds range checking for rx packet offset and length. It may only happen if there is a host side bug. Signed-off-by: Haiyang Zhang Signed-off-by: David S. Miller

hv_netvsc: common detach logic

2018-03-22T16:45:09+00:00

Make common function for detaching internals of device during changes to MTU and RSS. Make sure no more packets are transmitted and all packets have been received before doing device teardown. Change the wait logic to be common and use usleep_range(). Changes transmit enabling logic so that transmit queues are disabled during the period when lower device is being changed. And enabled only after sub channels are setup. This avoids issue where it could be that a packet was being sent while subchannel was not initialized. Fixes: 8195b1396ec8 ("hv_netvsc: fix deadlock on hotplug") Signed-off-by: Stephen Hemminger Signed-off-by: David S. Miller

hv_netvsc: avoid repeated updates of packet filter

2018-03-08T17:48:56+00:00

The netvsc driver can get repeated calls to netvsc_rx_mode during network setup; each of these calls ends up scheduling the lower layers to update tha packet filter. This update requires an request/response to the host. So avoid doing this if we already know that the correct packet filter value is set. Signed-off-by: Stephen Hemminger Signed-off-by: David S. Miller

hv_netvsc: empty current transmit aggregation if flow blocked

2017-12-13T20:57:39+00:00

If the transmit queue is known full, then don't keep aggregating data. And the cp_partial flag which indicates that the current aggregation buffer is full can be folded in to avoid more conditionals. Signed-off-by: Stephen Hemminger Signed-off-by: David S. Miller

hv_netvsc: remove open_cnt reference count

2017-12-13T20:57:39+00:00

There is only ever a single instance of network device object referencing the internal rndis object. Therefore the open_cnt atomic is not necessary. Signed-off-by: Stephen Hemminger Signed-off-by: David S. Miller

hv_netvsc: pass netvsc_device to receive callback

2017-12-13T20:57:39+00:00

The netvsc_receive_callback function was using RCU to find the appropriate underlying netvsc_device. Since calling function already had that pointer, this was unnecessary. Signed-off-by: Stephen Hemminger Signed-off-by: David S. Miller

hv_netvsc: simplify function args in receive status path

2017-12-13T20:57:38+00:00

The caller (netvsc_receive) already has the net device pointer, and should just pass that to functions rather than the hyperv device. This eliminates several impossible error paths in the process. Signed-off-by: Stephen Hemminger Signed-off-by: David S. Miller

hv_netvsc: track memory allocation failures in ethtool stats

2017-12-13T20:57:38+00:00

When skb can not be allocated, update ethtool statisitics rather than rx_dropped which is intended for netif_receive. Signed-off-by: Stephen Hemminger Signed-off-by: David S. Miller