linux/drivers/net/hyperv, branch v4.15

hv_netvsc: preserve hw_features on mtu/channels/ringparam changes

2017-11-16T01:49:00Z

rndis_filter_device_add() is called both from netvsc_probe() when we initially create the device and from set channels/mtu/ringparam routines where we basically remove the device and add it back. hw_features is reset in rndis_filter_device_add() and filled with host data. However, we lose all additional flags which are set outside of the driver, e.g. register_netdevice() adds NETIF_F_SOFT_FEATURES and many others. Unfortunately, calls to rndis_{query_hwcaps(), _set_offload_params()} calls cannot be avoided on every RNDIS reset: host expects us to set required features explicitly. Moreover, in theory hardware capabilities can change and we need to reflect the change in hw_features. Reset net->hw_features bits according to host data in rndis_netdev_set_hwcaps(), clear corresponding feature bits from net->features in case some features went missing (will never happen in real life I guess but let's be consistent). Signed-off-by: Vitaly Kuznetsov Reviewed-by: Haiyang Zhang Signed-off-by: David S. Miller

hv_netvsc: hide warnings about uninitialized/missing rndis device

2017-11-08T01:28:54Z

Hyper-V hosts are known to send RNDIS messages even after we halt the device in rndis_filter_halt_device(). Remove user visible messages as they are not really useful. Signed-off-by: Vitaly Kuznetsov Signed-off-by: David S. Miller

hv_netvsc: netvsc_teardown_gpadl() split

2017-11-08T01:28:54Z

It was found that in some cases host refuses to teardown GPADL for send/ receive buffers (probably when some work with these buffere is scheduled or ongoing). Change the teardown logic to be: 1) Send NVSP_MSG1_TYPE_REVOKE_* messages 2) Close the channel 3) Teardown GPADLs. This seems to work reliably. Signed-off-by: Vitaly Kuznetsov Signed-off-by: David S. Miller

hv_netvsc: Set tx_table to equal weight after subchannels open

2017-10-29T03:09:23Z

In some cases, like internal vSwitch, the host doesn't provide send indirection table updates. This patch sets the table to be equal weight after subchannels are all open. Otherwise, all workload will be on one TX channel. As tested, this patch has largely increased the throughput over internal vSwitch. Signed-off-by: Haiyang Zhang Signed-off-by: David S. Miller

hv_netvsc: Add initialization of tx_table in netvsc_device_add()

2017-10-15T01:42:55Z

tx_table is part of the private data of kernel net_device. It is only zero-ed out when allocating net_device. We may recreate netvsc_device w/o recreating net_device, so the private netdev data, including tx_table, are not zeroed. It may contain channel numbers for the older netvsc_device. This patch adds initialization of tx_table each time we recreate netvsc_device. Signed-off-by: Haiyang Zhang Signed-off-by: David S. Miller

hv_netvsc: Rename tx_send_table to tx_table

2017-10-15T01:42:55Z

Simplify the variable name: tx_send_table Signed-off-by: Haiyang Zhang Signed-off-by: David S. Miller

hv_netvsc: Rename ind_table to rx_table

2017-10-15T01:42:55Z

Rename this variable because it is the Receive indirection table. Signed-off-by: Haiyang Zhang Signed-off-by: David S. Miller

hv_netvsc: Add ethtool handler to set and get TCP hash levels

2017-10-08T17:11:01Z

The patch supports the options to switch TCP hash level between L3 and L4 by ethtool command. TCP over IPv4 and v6 can be set differently. The default hash level is L4. We currently only allow switching TX hash level from within the guests. For example, for TCP over IPv4 on eth0: To include TCP port numbers in hashing: ethtool -N eth0 rx-flow-hash tcp4 sdfn To exclude TCP port numbers in hashing: ethtool -N eth0 rx-flow-hash tcp4 sd To show TCP hash level: ethtool -n eth0 rx-flow-hash tcp4 Signed-off-by: Haiyang Zhang Signed-off-by: David S. Miller

hv_netvsc: Change the hash level variable to bit flags

2017-10-08T17:11:01Z

This simplifies the logic and make it easier to add more options. Signed-off-by: Haiyang Zhang Signed-off-by: David S. Miller

net: Add extack to upper device linking

2017-10-05T04:39:33Z

Add extack arg to netdev_upper_dev_link and netdev_master_upper_dev_link Signed-off-by: David Ahern Signed-off-by: David S. Miller