[PATCH v6 0/2] Improve virtio performance for 9k mtu

[Gavin Li <gavinl@nvidia.com>]

This small series contains two patches that improves virtio netdevice
performance for 9K mtu when GRO/ guest TSO is disabled.

Gavin Li (2):
  virtio-net: introduce and use helper function for guest gso support
    checks
---
changelog:
v4->v5
- Addressed comments from Michael S. Tsirkin
- Remove unnecessary () in return clause
v1->v2
- Add new patch
---
  virtio-net: use mtu size as buffer length for big packets
---
changelog:
v5->v6
- Addressed comments from Jason and Michael S. Tsirkin
- Remove wrong commit log description
- Rename virtnet_set_big_packets_fields with virtnet_set_big_packets
- Add more test results for different feature combinations
v4->v5
- Addressed comments from Michael S. Tsirkin
- Improve commit message
v3->v4
- Addressed comments from Si-Wei
- Rename big_packets_sg_num with big_packets_num_skbfrags
v2->v3
- Addressed comments from Si-Wei
- Simplify the condition check to enable the optimization
v1->v2
- Addressed comments from Jason, Michael, Si-Wei.
- Remove the flag of guest GSO support, set sg_num for big packets and
  use it directly
- Recalculate sg_num for big packets in virtnet_set_guest_offloads
- Replace the round up algorithm with DIV_ROUND_UP
---

 drivers/net/virtio_net.c | 48 ++++++++++++++++++++++++++--------------
 1 file changed, 32 insertions(+), 16 deletions(-)

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2.31.1