diff options
| author | Jakub Kicinski <kuba@kernel.org> | 2025-07-17 16:43:41 -0700 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2025-07-21 18:20:43 -0700 |
| commit | a166ab7816c534973745b0fe7bce3c8cefc5426f (patch) | |
| tree | 47c5195f33afc6849840550cf6b434033c1ca1d0 /Documentation/networking | |
| parent | 55ef461ce18fbe678f0b4834fc1eaa38c24f83fe (diff) | |
ethtool: rss: support creating contexts via Netlink
Support creating contexts via Netlink. Setting flow hashing
fields on the new context is not supported at this stage,
it can be added later.
An empty indirection table is not supported. This is a carry
over from the IOCTL interface where empty indirection table
meant delete. We can repurpose empty indirection table in
Netlink but for now to avoid confusion reject it using the
policy.
Support letting user choose the ID for the new context. This was
not possible in IOCTL since the context ID field for the create
action had to be set to the ETH_RXFH_CONTEXT_ALLOC magic value.
Link: https://patch.msgid.link/20250717234343.2328602-7-kuba@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'Documentation/networking')
| -rw-r--r-- | Documentation/networking/ethtool-netlink.rst | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/Documentation/networking/ethtool-netlink.rst b/Documentation/networking/ethtool-netlink.rst index 056832c77ffd..2646fafb8512 100644 --- a/Documentation/networking/ethtool-netlink.rst +++ b/Documentation/networking/ethtool-netlink.rst @@ -240,6 +240,7 @@ Userspace to kernel: ``ETHTOOL_MSG_TSCONFIG_GET`` get hw timestamping configuration ``ETHTOOL_MSG_TSCONFIG_SET`` set hw timestamping configuration ``ETHTOOL_MSG_RSS_SET`` set RSS settings + ``ETHTOOL_MSG_RSS_CREATE_ACT`` create an additional RSS context ===================================== ================================= Kernel to userspace: @@ -294,6 +295,8 @@ Kernel to userspace: ``ETHTOOL_MSG_TSCONFIG_SET_REPLY`` new hw timestamping configuration ``ETHTOOL_MSG_PSE_NTF`` PSE events notification ``ETHTOOL_MSG_RSS_NTF`` RSS settings notification + ``ETHTOOL_MSG_RSS_CREATE_ACT_REPLY`` create an additional RSS context + ``ETHTOOL_MSG_RSS_CREATE_NTF`` additional RSS context created ======================================== ================================= ``GET`` requests are sent by userspace applications to retrieve device @@ -2014,6 +2017,30 @@ device needs at least 8 entries - the real table in use will end up being of 2, so tables which size is not a power of 2 will likely be rejected. Using table of size 0 will reset the indirection table to the default. +RSS_CREATE_ACT +============== + +Request contents: + +===================================== ====== ============================== + ``ETHTOOL_A_RSS_HEADER`` nested request header + ``ETHTOOL_A_RSS_CONTEXT`` u32 context number + ``ETHTOOL_A_RSS_HFUNC`` u32 RSS hash func + ``ETHTOOL_A_RSS_INDIR`` binary Indir table bytes + ``ETHTOOL_A_RSS_HKEY`` binary Hash key bytes + ``ETHTOOL_A_RSS_INPUT_XFRM`` u32 RSS input data transformation +===================================== ====== ============================== + +Kernel response contents: + +===================================== ====== ============================== + ``ETHTOOL_A_RSS_HEADER`` nested request header + ``ETHTOOL_A_RSS_CONTEXT`` u32 context number +===================================== ====== ============================== + +Create an additional RSS context, if ``ETHTOOL_A_RSS_CONTEXT`` is not +specified kernel will allocate one automatically. + PLCA_GET_CFG ============ |