linux-toradex.git/drivers/net/hyperv/netvsc_drv.c, branch v5.18-rc6

hv_netvsc: Add check for kvmalloc_array

2022-03-16T04:57:53+00:00

As the potential failure of the kvmalloc_array(),
it should be better to check and restore the 'data'
if fails in order to avoid the dereference of the
NULL pointer.

Fixes: 6ae746711263 ("hv_netvsc: Add per-cpu ethtool stats for netvsc")
Signed-off-by: Jiasheng Jiang 
Link: https://lore.kernel.org/r/20220314020125.2365084-1-jiasheng@iscas.ac.cn
Signed-off-by: Jakub Kicinski

Merge tag 'hyperv-next-signed-20220114' of git://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux

2022-01-16T13:53:00+00:00

Pull hyperv updates from Wei Liu:

 - More patches for Hyper-V isolation VM support (Tianyu Lan)

 - Bug fixes and clean-up patches from various people

* tag 'hyperv-next-signed-20220114' of git://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux:
  scsi: storvsc: Fix storvsc_queuecommand() memory leak
  x86/hyperv: Properly deal with empty cpumasks in hyperv_flush_tlb_multi()
  Drivers: hv: vmbus: Initialize request offers message for Isolation VM
  scsi: storvsc: Fix unsigned comparison to zero
  swiotlb: Add CONFIG_HAS_IOMEM check around swiotlb_mem_remap()
  x86/hyperv: Fix definition of hv_ghcb_pg variable
  Drivers: hv: Fix definition of hypercall input & output arg variables
  net: netvsc: Add Isolation VM support for netvsc driver
  scsi: storvsc: Add Isolation VM support for storvsc driver
  hyper-v: Enable swiotlb bounce buffer for Isolation VM
  x86/hyper-v: Add hyperv Isolation VM check in the cc_platform_has()
  swiotlb: Add swiotlb bounce buffer remap function for HV IVM

net: netvsc: Add Isolation VM support for netvsc driver

2021-12-20T18:01:09+00:00

In Isolation VM, all shared memory with host needs to mark visible
to host via hvcall. vmbus_establish_gpadl() has already done it for
netvsc rx/tx ring buffer. The page buffer used by vmbus_sendpacket_
pagebuffer() stills need to be handled. Use DMA API to map/umap
these memory during sending/receiving packet and Hyper-V swiotlb
bounce buffer dma address will be returned. The swiotlb bounce buffer
has been masked to be visible to host during boot up.

rx/tx ring buffer is allocated via vzalloc() and they need to be
mapped into unencrypted address space(above vTOM) before sharing
with host and accessing. Add hv_map/unmap_memory() to map/umap rx
/tx ring buffer.

Signed-off-by: Tianyu Lan 
Reviewed-by: Haiyang Zhang 
Reviewed-by: Michael Kelley 
Link: https://lore.kernel.org/r/20211213071407.314309-6-ltykernel@gmail.com
Signed-off-by: Wei Liu

ethtool: extend ringparam setting/getting API with rx_buf_len

2021-11-22T12:31:49+00:00

Add two new parameters kernel_ringparam and extack for
.get_ringparam and .set_ringparam to extend more ring params
through netlink.

Signed-off-by: Hao Chen 
Signed-off-by: Guangbin Huang 
Signed-off-by: David S. Miller

hv_netvsc: Add comment of netvsc_xdp_xmit()

2021-10-15T02:17:57+00:00

Adding comment to avoid the misusing of netvsc_xdp_xmit().
Otherwise the value of skb->queue_mapping could be 0 and
then the return value of skb_get_rx_queue() could be MAX_U16
cause by overflow.

Signed-off-by: Jiasheng Jiang 
Reviewed-by: Haiyang Zhang 
Link: https://lore.kernel.org/r/1634174786-1810351-1-git-send-email-jiasheng@iscas.ac.cn
Signed-off-by: Jakub Kicinski

hv_netvsc: use netif_is_bond_master() instead of open code

2021-10-10T10:18:48+00:00

Use netif_is_bond_master() function instead of open code, which is
((event_dev->priv_flags & IFF_BONDING) && (event_dev->flags & IFF_MASTER)).
This patch doesn't change logic.

Signed-off-by: Juhee Kang 
Signed-off-by: David S. Miller

net: use eth_hw_addr_set()

2021-10-02T13:18:25+00:00

Convert sw drivers from memcpy(... ETH_ADDR) to eth_hw_addr_set():

  @@
  expression dev, np;
  @@
  - memcpy(dev->dev_addr, np, ETH_ALEN)
  + eth_hw_addr_set(dev, np)

Signed-off-by: Jakub Kicinski 
Signed-off-by: David S. Miller

hv_netvsc: Set needed_headroom according to VF

2021-06-21T19:10:00+00:00

Set needed_headroom according to VF if VF needs a bigger
headroom.

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

hv_netvsc: Make netvsc/VF binding check both MAC and serial number

2021-04-26T01:19:23+00:00

Currently the netvsc/VF binding logic only checks the PCI serial number.

The Microsoft Azure Network Adapter (MANA) supports multiple net_device
interfaces (each such interface is called a "vPort", and has its unique
MAC address) which are backed by the same VF PCI device, so the binding
logic should check both the MAC address and the PCI serial number.

The change should not break any other existing VF drivers, because
Hyper-V NIC SR-IOV implementation requires the netvsc network
interface and the VF network interface have the same MAC address.

Co-developed-by: Haiyang Zhang 
Signed-off-by: Haiyang Zhang 
Co-developed-by: Shachar Raindel 
Signed-off-by: Shachar Raindel 
Acked-by: Stephen Hemminger 
Signed-off-by: Dexuan Cui 
Signed-off-by: David S. Miller

net: remove the new_ifindex argument from dev_change_net_namespace

2021-04-07T21:43:28+00:00

Here is only one place where we want to specify new_ifindex. In all
other cases, callers pass 0 as new_ifindex. It looks reasonable to add a
low-level function with new_ifindex and to convert
dev_change_net_namespace to a static inline wrapper.

Fixes: eeb85a14ee34 ("net: Allow to specify ifindex when device is moved to another namespace")
Suggested-by: Jakub Kicinski 
Signed-off-by: Andrei Vagin 
Acked-by: Jakub Kicinski 
Signed-off-by: David S. Miller