[dpdk-dev] [PATCH] net/enic: enable overlay offload for VXLAN and GENEVE
Ferruh Yigit
ferruh.yigit at intel.com
Fri Apr 6 18:15:40 CEST 2018
On 4/5/2018 12:54 AM, John Daley wrote:
> From: Hyong Youb Kim <hyonkim at cisco.com>
>
> Recent NIC models support overlay offload. The overlay offload
> feature enables the following on the NIC.
> - Rx/Tx checksum offloads for both inner and outer packets.
> - Rx inner packet type classification.
> - TSO.
> - Inner RSS.
>
> TX descriptors do not require any changes, except the header length
> for TSO. The NIC parses outer/inner packets and performs offloads on
> them as necessary. The header length for tunneled TSO includes both
> inner and outer headers.
>
> The NIC actually parses and performs the above for NVGRE as well. DPDK
> currently has no offload flags for NVGRE, and the hardware has no
> controls to individually enable tunnel types either. So do nothing for
> now.
>
> Add a config flag to enable overlay offload by default. To disable it,
> the user should set it to 'n'.
>
> CONFIG_RTE_LIBRTE_ENIC_ENABLE_OVERLAY_OFFLOAD=y
>
> Also update the enic guide doc.
>
> Signed-off-by: Hyong Youb Kim <hyonkim at cisco.com>
> Reviewed-by: John Daley <johndale at cisco.com>
> ---
> config/common_base | 1 +
> doc/guides/nics/enic.rst | 52 ++++++++++++++++++
> drivers/net/enic/base/vnic_dev.c | 33 ++++++++++++
> drivers/net/enic/base/vnic_dev.h | 5 +-
> drivers/net/enic/base/vnic_devcmd.h | 12 +++++
> drivers/net/enic/base/vnic_wq.h | 1 +
> drivers/net/enic/enic.h | 6 +++
> drivers/net/enic/enic_ethdev.c | 21 ++------
> drivers/net/enic/enic_main.c | 25 +++++++++
> drivers/net/enic/enic_res.c | 23 ++++++++
> drivers/net/enic/enic_rxtx.c | 104 ++++++++++++++++++++++++++++--------
> 11 files changed, 241 insertions(+), 42 deletions(-)
>
> diff --git a/config/common_base b/config/common_base
> index c09c7cf88..964e37b6e 100644
> --- a/config/common_base
> +++ b/config/common_base
> @@ -205,6 +205,7 @@ CONFIG_RTE_LIBRTE_ENA_COM_DEBUG=n
> # Compile burst-oriented Cisco ENIC PMD driver
> #
> CONFIG_RTE_LIBRTE_ENIC_PMD=y
> +CONFIG_RTE_LIBRTE_ENIC_ENABLE_OVERLAY_OFFLOAD=y
Hi John,
We are trying to reduce config options we have, is overlay offload enabling can
be done via runtime argument or dedicated offload flag?
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