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| author | Michal Kubecek <mkubecek@suse.cz> | 2020-03-12 23:08:23 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2020-03-13 01:32:33 +0300 |
| commit | e4a1717b677c5cb285e9b425c569e261084a484c (patch) | |
| tree | e7b3079c31cba72878b784557188d6dc3eb82db2 /Documentation | |
| parent | 111dcba3c694b4ca7dc8b6abfd575745dd51be3d (diff) | |
| download | linux-e4a1717b677c5cb285e9b425c569e261084a484c.tar.xz | |
ethtool: provide ring sizes with RINGS_GET request
Implement RINGS_GET request to get ring sizes of a network device. These
are traditionally available via ETHTOOL_GRINGPARAM ioctl request.
Omit attributes for ring types which are not supported by driver or device
(zero reported for maximum).
v2: (all suggested by Jakub Kicinski)
- minor cleanup in rings_prepare_data()
- more descriptive rings_reply_size()
- omit attributes with zero max size
Signed-off-by: Michal Kubecek <mkubecek@suse.cz>
Reviewed-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/networking/ethtool-netlink.rst | 30 |
1 files changed, 29 insertions, 1 deletions
diff --git a/Documentation/networking/ethtool-netlink.rst b/Documentation/networking/ethtool-netlink.rst index e553112fa2d7..798c2f97d89b 100644 --- a/Documentation/networking/ethtool-netlink.rst +++ b/Documentation/networking/ethtool-netlink.rst @@ -193,6 +193,7 @@ Userspace to kernel: ``ETHTOOL_MSG_FEATURES_SET`` set device features ``ETHTOOL_MSG_PRIVFLAGS_GET`` get private flags ``ETHTOOL_MSG_PRIVFLAGS_SET`` set private flags + ``ETHTOOL_MSG_RINGS_GET`` get ring sizes ===================================== ================================ Kernel to userspace: @@ -213,6 +214,7 @@ Kernel to userspace: ``ETHTOOL_MSG_FEATURES_NTF`` netdev features notification ``ETHTOOL_MSG_PRIVFLAGS_GET_REPLY`` private flags ``ETHTOOL_MSG_PRIVFLAGS_NTF`` private flags + ``ETHTOOL_MSG_RINGS_GET_REPLY`` ring sizes ===================================== ================================= ``GET`` requests are sent by userspace applications to retrieve device @@ -645,6 +647,32 @@ Request contents: modify only values of some of them. +RINGS_GET +========= + +Gets ring sizes like ``ETHTOOL_GRINGPARAM`` ioctl request. + +Request contents: + + ==================================== ====== ========================== + ``ETHTOOL_A_RINGS_HEADER`` nested request header + ==================================== ====== ========================== + +Kernel response contents: + + ==================================== ====== ========================== + ``ETHTOOL_A_RINGS_HEADER`` nested reply header + ``ETHTOOL_A_RINGS_RX_MAX`` u32 max size of RX ring + ``ETHTOOL_A_RINGS_RX_MINI_MAX`` u32 max size of RX mini ring + ``ETHTOOL_A_RINGS_RX_JUMBO_MAX`` u32 max size of RX jumbo ring + ``ETHTOOL_A_RINGS_TX_MAX`` u32 max size of TX ring + ``ETHTOOL_A_RINGS_RX`` u32 size of RX ring + ``ETHTOOL_A_RINGS_RX_MINI`` u32 size of RX mini ring + ``ETHTOOL_A_RINGS_RX_JUMBO`` u32 size of RX jumbo ring + ``ETHTOOL_A_RINGS_TX`` u32 size of TX ring + ==================================== ====== ========================== + + Request translation =================== @@ -671,7 +699,7 @@ have their netlink replacement yet. ``ETHTOOL_SEEPROM`` n/a ``ETHTOOL_GCOALESCE`` n/a ``ETHTOOL_SCOALESCE`` n/a - ``ETHTOOL_GRINGPARAM`` n/a + ``ETHTOOL_GRINGPARAM`` ``ETHTOOL_MSG_RINGS_GET`` ``ETHTOOL_SRINGPARAM`` n/a ``ETHTOOL_GPAUSEPARAM`` n/a ``ETHTOOL_SPAUSEPARAM`` n/a |