user/sven/linux.git/drivers/net/hyperv, branch v4.4.125

hv_netvsc: use skb_get_hash() instead of a homegrown implementation

2017-03-26T10:13:18Z

commit 757647e10e55c01fb7a9c4356529442e316a7c72 upstream. Recent changes to 'struct flow_keys' (e.g commit d34af823ff40 ("net: Add VLAN ID to flow_keys")) introduced a performance regression in netvsc driver. Is problem is, however, not the above mentioned commit but the fact that netvsc_set_hash() function did some assumptions on the struct flow_keys data layout and this is wrong. Get rid of netvsc_set_hash() by switching to skb_get_hash(). This change will also imply switching to Jenkins hash from the currently used Toeplitz but it seems there is no good excuse for Toeplitz to stay. Signed-off-by: Vitaly Kuznetsov Acked-by: Eric Dumazet Signed-off-by: David S. Miller Cc: Sumit Semwal Signed-off-by: Greg Kroah-Hartman

netvsc: Set maximum GSO size in the right place

2017-02-14T23:22:51Z

Commit a50af86dd49e "netvsc: reduce maximum GSO size" was wrongly backported to 4.4-stable. The maximum size needs to be set before the net device is registered, in netvsc_probe(). Signed-off-by: Ben Hutchings Cc: Stephen Hemminger Cc: "David S. Miller" Signed-off-by: Greg Kroah-Hartman

netvsc: reduce maximum GSO size

2017-01-15T12:41:34Z

[ Upstream commit a50af86dd49ee1851d1ccf06dd0019c05b95e297 ] Hyper-V (and Azure) support using NVGRE which requires some extra space for encapsulation headers. Because of this the largest allowed TSO packet is reduced. For older releases, hard code a fixed reduced value. For next release, there is a better solution which uses result of host offload negotiation. Signed-off-by: Stephen Hemminger Signed-off-by: David S. Miller Signed-off-by: Greg Kroah-Hartman

flow_dissector: Add flags argument to skb_flow_dissector functions

2015-09-01T22:06:22Z

The flags argument will allow control of the dissection process (for instance whether to parse beyond L3). Signed-off-by: Tom Herbert Signed-off-by: David S. Miller

hv_netvsc: Fix dereference of nvdev before check

2015-08-19T03:15:01Z

Passes static analysis by Smatch. Signed-off-by: Andrew Schwartzmeyer Signed-off-by: David S. Miller

hv_netvsc: Implement set_channels ethtool op

2015-08-12T21:45:38Z

This enables the use of ethtool --set-channels devname combined N to change the number of vRSS queues. Separate rx, tx, and other parameters are not supported. The maximum is rsscap.num_recv_que. It passes the given value to rndis_filter_device_add through the device_info->num_chn field. If the procedure fails, it attempts to recover to the prior state. If the recovery fails, it logs an error and aborts. Current num_chn is saved and restored when changing the MTU. Signed-off-by: Andrew Schwartzmeyer Reviewed-by: Haiyang Zhang Signed-off-by: David S. Miller

hv_netvsc: Set vRSS with num_chn in RNDIS filter

2015-08-12T21:45:38Z

Uses device_info->num_chn to pass user provided number of vRSS queues (from ethtool --set-channels) to rndis_filter_device_add. If nonzero and less than the maximum, set net_device->num_chn to the given value; else default to prior algorithm. Always initialize struct device_info to 0, otherwise not all its fields are guaranteed to be 0, which is necessary when checking if num_chn has been purposefully set. Signed-off-by: Andrew Schwartzmeyer Reviewed-by: Haiyang Zhang Signed-off-by: David S. Miller

hv_netvsc: Add structs and handlers for VF messages

2015-07-27T08:12:26Z

This patch adds data structures and handlers for messages related to SRIOV Virtual Function. Signed-off-by: Haiyang Zhang Reviewed-by: K. Y. Srinivasan Signed-off-by: David S. Miller

hv_netvsc: Wait for sub-channels to be processed during probe

2015-07-26T23:40:36Z

The current code returns from probe without waiting for the proper handling of subchannels that may be requested. If the netvsc driver were to be rapidly loaded/unloaded, we can trigger a panic as the unload will be tearing down state that may not have been fully setup yet. We fix this issue by making sure that we return from the probe call only after ensuring that the sub-channel offers in flight are properly handled. Reviewed-and-tested-by: Haiyang Zhang Signed-off-by: David S. Miller

hv_netvsc: Add close of RNDIS filter into change mtu call

2015-07-16T04:11:31Z

The current change mtu call only stops tx before removing RNDIS filter. In case ringbufer is not empty, the rndis_filter_device_remove() may hang on removing the buffers. This patch adds close of RNDIS filter before removing it, also a gradual waiting loop until the ring is empty. The change_mtu hang issue under heavy traffic is solved by this patch. Signed-off-by: Haiyang Zhang Reviewed-by: K. Y. Srinivasan Signed-off-by: David S. Miller