diff options
| author | Ronak Doshi <doshir@vmware.com> | 2020-05-28 14:53:21 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2020-05-28 16:26:48 -0700 |
| commit | dacce2be33124df3c71f979ac47e3d6354a41125 (patch) | |
| tree | 5e56b2fef4ec703f990cc9ff42cefea97939a7d5 /drivers/net/vmxnet3/vmxnet3_int.h | |
| parent | d3a8a9e5c3b334d443e97daa59bb95c0b69f4794 (diff) | |
vmxnet3: add geneve and vxlan tunnel offload support
Vmxnet3 version 3 device supports checksum/TSO offload. Thus, vNIC to
pNIC traffic can leverage hardware checksum/TSO offloads. However,
vmxnet3 does not support checksum/TSO offload for Geneve/VXLAN
encapsulated packets. Thus, for a vNIC configured with an overlay, the
guest stack must first segment the inner packet, compute the inner
checksum for each segment and encapsulate each segment before
transmitting the packet via the vNIC. This results in significant
performance penalty.
This patch will enhance vmxnet3 to support Geneve/VXLAN TSO as well as
checksum offload.
Signed-off-by: Ronak Doshi <doshir@vmware.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/vmxnet3/vmxnet3_int.h')
| -rw-r--r-- | drivers/net/vmxnet3/vmxnet3_int.h | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/drivers/net/vmxnet3/vmxnet3_int.h b/drivers/net/vmxnet3/vmxnet3_int.h index d52ccc3eeba2..86db809c7592 100644 --- a/drivers/net/vmxnet3/vmxnet3_int.h +++ b/drivers/net/vmxnet3/vmxnet3_int.h @@ -219,10 +219,16 @@ struct vmxnet3_tx_ctx { bool ipv4; bool ipv6; u16 mss; - u32 eth_ip_hdr_size; /* only valid for pkts requesting tso or csum - * offloading + u32 l4_offset; /* only valid for pkts requesting tso or csum + * offloading. For encap offload, it refers to + * inner L4 offset i.e. it includes outer header + * encap header and inner eth and ip header size + */ + + u32 l4_hdr_size; /* only valid if mss != 0 + * Refers to inner L4 hdr size for encap + * offload */ - u32 l4_hdr_size; /* only valid if mss != 0 */ u32 copy_size; /* # of bytes copied into the data ring */ union Vmxnet3_GenericDesc *sop_txd; union Vmxnet3_GenericDesc *eop_txd; |