linux_dsm_epyc7002/drivers/net/vmxnet3
Shrikrishna Khare 50a5ce3e71 vmxnet3: add receive data ring support
vmxnet3 driver preallocates buffers for receiving packets and posts the
buffers to the emulation. In order to deliver a received packet to the
guest, the emulation must map buffer(s) and copy the packet into it.

To avoid this memory mapping overhead, this patch introduces the receive
data ring - a set of small sized buffers that are always mapped by
the emulation. If a packet fits into the receive data ring buffer, the
emulation delivers the packet via the receive data ring (which must be
copied by the guest driver), or else the usual receive path is used.

Receive Data Ring buffer length is configurable via ethtool -G ethX rx-mini

Signed-off-by: Shrikrishna Khare <skhare@vmware.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-06-16 22:37:04 -07:00
..
Makefile vmxnet3: prepare for version 3 changes 2016-06-16 22:37:04 -07:00
upt1_defs.h vmxnet3: prepare for version 3 changes 2016-06-16 22:37:04 -07:00
vmxnet3_defs.h vmxnet3: add receive data ring support 2016-06-16 22:37:04 -07:00
vmxnet3_drv.c vmxnet3: add receive data ring support 2016-06-16 22:37:04 -07:00
vmxnet3_ethtool.c vmxnet3: add receive data ring support 2016-06-16 22:37:04 -07:00
vmxnet3_int.h vmxnet3: add receive data ring support 2016-06-16 22:37:04 -07:00