linux.git/drivers/net/hyperv, branch v5.0-rc2

net: dev: Add extack argument to dev_set_mac_address()

2018-12-14T02:41:38+00:00

A follow-up patch will add a notifier type NETDEV_PRE_CHANGEADDR, which
allows vetoing of MAC address changes. One prominent path to that
notification is through dev_set_mac_address(). Therefore give this
function an extack argument, so that it can be packed together with the
notification. Thus a textual reason for rejection (or a warning) can be
communicated back to the user.

Signed-off-by: Petr Machata 
Acked-by: Jiri Pirko 
Reviewed-by: Ido Schimmel 
Signed-off-by: David S. Miller

net: core: dev: Add extack argument to dev_change_flags()

2018-12-06T21:26:07+00:00

In order to pass extack together with NETDEV_PRE_UP notifications, it's
necessary to route the extack to __dev_open() from diverse (possibly
indirect) callers. One prominent API through which the notification is
invoked is dev_change_flags().

Therefore extend dev_change_flags() with and extra extack argument and
update all users. Most of the calls end up just encoding NULL, but
several sites (VLAN, ipvlan, VRF, rtnetlink) do have extack available.

Since the function declaration line is changed anyway, name the other
function arguments to placate checkpatch.

Signed-off-by: Petr Machata 
Acked-by: Jiri Pirko 
Reviewed-by: Ido Schimmel 
Reviewed-by: David Ahern 
Signed-off-by: David S. Miller

net: core: dev: Add extack argument to dev_open()

2018-12-06T21:26:06+00:00

In order to pass extack together with NETDEV_PRE_UP notifications, it's
necessary to route the extack to __dev_open() from diverse (possibly
indirect) callers. One prominent API through which the notification is
invoked is dev_open().

Therefore extend dev_open() with and extra extack argument and update
all users. Most of the calls end up just encoding NULL, but bond and
team drivers have the extack readily available.

Signed-off-by: Petr Machata 
Acked-by: Jiri Pirko 
Reviewed-by: Ido Schimmel 
Reviewed-by: David Ahern 
Signed-off-by: David S. Miller

net/hyperv: use skb_vlan_tag_*() helpers

2018-11-21T23:41:30+00:00

Replace open-coded bitfield manipulation with skb_vlan_tag_*() helpers.
This also enables correctly passing of VLAN.CFI bit.

Signed-off-by: Michał Mirosław 
Reviewed-by: Haiyang Zhang 
Signed-off-by: David S. Miller

hv_netvsc: fix vf serial matching with pci slot info

2018-10-16T05:58:11+00:00

The VF device's serial number is saved as a string in PCI slot's
kobj name, not the slot->number. This patch corrects the netvsc
driver, so the VF device can be successfully paired with synthetic
NIC.

Fixes: 00d7ddba1143 ("hv_netvsc: pair VF based on serial number")
Reported-by: Vitaly Kuznetsov 
Signed-off-by: Haiyang Zhang 
Reviewed-by: Stephen Hemminger 
Signed-off-by: David S. Miller

hv_netvsc: remove ndo_poll_controller

2018-10-03T05:57:34+00:00

Similar to other patches from ERic.

As diagnosed by Song Liu, ndo_poll_controller() can
be very dangerous on loaded hosts, since the cpu
calling ndo_poll_controller() might steal all NAPI
contexts (for all RX/TX queues of the NIC). This capture
can last for unlimited amount of time, since one
cpu is generally not able to drain all the queues under load.

In netvsc driver it uses NAPI for TX completions. The default
poll_napi will do this for us now and avoid the capture.

Signed-off-by: Stephen Hemminger 
Cc: Haiyang Zhang 
Cc: Eric Dumazet 
Reviewed-by: Haiyang Zhang 
Signed-off-by: David S. Miller

hv_netvsc: Fix rndis_per_packet_info internal field initialization

2018-10-02T06:15:17+00:00

The RSC feature -- a bit field "internal" was added here with total
size unchanged:
struct rndis_per_packet_info {
	u32 size;
	u32 type:31;
	u32 internal:1;
	u32 ppi_offset;
};

On TX path, we put rndis msg into skb head room, which is not zeroed
before passing to us. We do not use the "internal" field in TX path,
but it may impact older hosts which use the entire 32 bits as "type".

To fix the bug, this patch sets the field "internal" to zero.

Fixes: c8e4eff4675f ("hv_netvsc: Add support for LRO/RSC in the vSwitch")
Signed-off-by: Haiyang Zhang 
Signed-off-by: David S. Miller

hv_netvsc: Add handler for LRO setting change

2018-09-23T00:23:16+00:00

This patch adds the handler for LRO setting change, so that a user
can use ethtool command to enable / disable LRO feature.

Signed-off-by: Haiyang Zhang 
Signed-off-by: David S. Miller

hv_netvsc: Add support for LRO/RSC in the vSwitch

2018-09-23T00:23:15+00:00

LRO/RSC in the vSwitch is a feature available in Windows Server 2019
hosts and later. It reduces the per packet processing overhead by
coalescing multiple TCP segments when possible. This patch adds netvsc
driver support for this feature.

Signed-off-by: Haiyang Zhang 
Signed-off-by: David S. Miller

hv_netvsc: pair VF based on serial number

2018-09-17T14:59:41+00:00

Matching network device based on MAC address is problematic
since a non VF network device can be creted with a duplicate MAC
address causing confusion and problems.  The VMBus API does provide
a serial number that is a better matching method.

Signed-off-by: Stephen Hemminger 
Signed-off-by: David S. Miller