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| author | Jakub Kicinski <kuba@kernel.org> | 2023-04-14 08:22:12 +0300 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2023-04-14 08:22:12 +0300 |
| commit | f7d29571ab0ad8b0251d8f2fe433b21ac045091c (patch) | |
| tree | 6aad597caef232c74d8a70c6af420909317ec734 /include/linux | |
| parent | 85a4abed155402d37fef9ea29836dbcdf816cb08 (diff) | |
| parent | 01e23b2b3bad2d6e996d546f69c6ee804d0fc92f (diff) | |
| download | linux-f7d29571ab0ad8b0251d8f2fe433b21ac045091c.tar.xz | |
Merge branch 'add-kernel-tc-mqprio-and-tc-taprio-support-for-preemptible-traffic-classes'
Vladimir Oltean says:
====================
Add kernel tc-mqprio and tc-taprio support for preemptible traffic classes
The last RFC in August 2022 contained a proposal for the UAPI of both
TSN standards which together form Frame Preemption (802.1Q and 802.3):
https://lore.kernel.org/netdev/20220816222920.1952936-1-vladimir.oltean@nxp.com/
It wasn't clear at the time whether the 802.1Q portion of Frame Preemption
should be exposed via the tc qdisc (mqprio, taprio) or via some other
layer (perhaps also ethtool like the 802.3 portion, or dcbnl), even
though the options were discussed extensively, with pros and cons:
https://lore.kernel.org/netdev/20220816222920.1952936-3-vladimir.oltean@nxp.com/
So the 802.3 portion got submitted separately and finally was accepted:
https://lore.kernel.org/netdev/20230119122705.73054-1-vladimir.oltean@nxp.com/
leaving the only remaining question: how do we expose the 802.1Q bits?
This series proposes that we use the Qdisc layer, through separate
(albeit very similar) UAPI in mqprio and taprio, and that both these
Qdiscs pass the information down to the offloading device driver through
the common mqprio offload structure (which taprio also passes).
An implementation is provided for the NXP LS1028A on-board Ethernet
endpoint (enetc). Previous versions also contained support for its
embedded switch (felix), but this needs more work and will be submitted
separately.
v4: https://lore.kernel.org/netdev/20230403103440.2895683-1-vladimir.oltean@nxp.com/
v2: https://lore.kernel.org/netdev/20230219135309.594188-1-vladimir.oltean@nxp.com/
v1: https://lore.kernel.org/netdev/20230216232126.3402975-1-vladimir.oltean@nxp.com/
====================
Link: https://lore.kernel.org/r/20230411180157.1850527-1-vladimir.oltean@nxp.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/ethtool_netlink.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/include/linux/ethtool_netlink.h b/include/linux/ethtool_netlink.h index 17003b385756..fae0dfb9a9c8 100644 --- a/include/linux/ethtool_netlink.h +++ b/include/linux/ethtool_netlink.h @@ -39,6 +39,7 @@ void ethtool_aggregate_pause_stats(struct net_device *dev, struct ethtool_pause_stats *pause_stats); void ethtool_aggregate_rmon_stats(struct net_device *dev, struct ethtool_rmon_stats *rmon_stats); +bool ethtool_dev_mm_supported(struct net_device *dev); #else static inline int ethnl_cable_test_alloc(struct phy_device *phydev, u8 cmd) @@ -112,5 +113,10 @@ ethtool_aggregate_rmon_stats(struct net_device *dev, { } +static inline bool ethtool_dev_mm_supported(struct net_device *dev) +{ + return false; +} + #endif /* IS_ENABLED(CONFIG_ETHTOOL_NETLINK) */ #endif /* _LINUX_ETHTOOL_NETLINK_H_ */ |