From: Ronak Doshi <dos...@vmware.com> Date: Fri, 16 Mar 2018 14:49:19 -0700
> 'Commit 45dac1d6ea04 ("vmxnet3: Changes for vmxnet3 adapter version 2 > (fwd)")' introduced a flag "lro" in structure vmxnet3_adapter which is > used to indicate whether LRO is enabled or not. However, the patch > did not set the flag and hence it was never exercised. > > So, when LRO is enabled, it resulted in poor TCP performance due to > delayed acks. This issue is seen with packets which are larger than > the mss getting a delayed ack rather than an immediate ack, thus > resulting in high latency. > > This patch removes the lro flag and directly uses device features > against NETIF_F_LRO to check if lro is enabled. > > Fixes: 45dac1d6ea04 ("vmxnet3: Changes for vmxnet3 adapter version 2 (fwd)") > Reported-by: Rachel Lunnon <rachel_lun...@stormagic.com> > Signed-off-by: Ronak Doshi <dos...@vmware.com> > Acked-by: Shrikrishna Khare <skh...@vmware.com> Applied.