diff options
| author | Jakub Kicinski <kuba@kernel.org> | 2024-10-05 01:37:58 +0300 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2024-10-05 01:37:58 +0300 |
| commit | 0da7fb3bcae036be9d2da5f0d216db1572139615 (patch) | |
| tree | 3ccb8ea5408dd58651f9384bb2b7b792f573729a /include | |
| parent | 3d07b691ee707c00afaf365440975e81bb96cd9b (diff) | |
| parent | f26080d47007df2ee90e65b7d390207ff3a588af (diff) | |
| download | linux-0da7fb3bcae036be9d2da5f0d216db1572139615.tar.xz | |
Merge branch 'net-prepare-pacing-offload-support'
Eric Dumazet says:
====================
net: prepare pacing offload support
Some network devices have the ability to offload EDT (Earliest
Departure Time) which is the model used for TCP pacing and FQ
packet scheduler.
Some of them implement the timing wheel mechanism described in
https://saeed.github.io/files/carousel-sigcomm17.pdf
with an associated 'timing wheel horizon'.
In order to upstream the NIC support, this series adds :
1) timing wheel horizon as a per-device attribute.
2) FQ packet scheduler support, to let paced packets
below the timing wheel horizon be handled by the driver.
v1: https://lore.kernel.org/20240930152304.472767-2-edumazet@google.com
====================
Link: https://patch.msgid.link/20241003121219.2396589-1-edumazet@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/netdevice.h | 4 | ||||
| -rw-r--r-- | include/uapi/linux/if_link.h | 1 | ||||
| -rw-r--r-- | include/uapi/linux/pkt_sched.h | 2 |
3 files changed, 7 insertions, 0 deletions
diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h index 4d20c776a4ff..49a7e7db0883 100644 --- a/include/linux/netdevice.h +++ b/include/linux/netdevice.h @@ -2009,6 +2009,8 @@ enum netdev_reg_state { * @dpll_pin: Pointer to the SyncE source pin of a DPLL subsystem, * where the clock is recovered. * + * @max_pacing_offload_horizon: max EDT offload horizon in nsec. + * * FIXME: cleanup struct net_device such that network protocol info * moves out. */ @@ -2399,6 +2401,8 @@ struct net_device { /** @irq_moder: dim parameters used if IS_ENABLED(CONFIG_DIMLIB). */ struct dim_irq_moder *irq_moder; + u64 max_pacing_offload_horizon; + u8 priv[] ____cacheline_aligned __counted_by(priv_len); } ____cacheline_aligned; diff --git a/include/uapi/linux/if_link.h b/include/uapi/linux/if_link.h index 6dc258993b17..506ba9c80e83 100644 --- a/include/uapi/linux/if_link.h +++ b/include/uapi/linux/if_link.h @@ -377,6 +377,7 @@ enum { IFLA_GSO_IPV4_MAX_SIZE, IFLA_GRO_IPV4_MAX_SIZE, IFLA_DPLL_PIN, + IFLA_MAX_PACING_OFFLOAD_HORIZON, __IFLA_MAX }; diff --git a/include/uapi/linux/pkt_sched.h b/include/uapi/linux/pkt_sched.h index a3cd0c2dc995..25a9a47001cd 100644 --- a/include/uapi/linux/pkt_sched.h +++ b/include/uapi/linux/pkt_sched.h @@ -836,6 +836,8 @@ enum { TCA_FQ_WEIGHTS, /* Weights for each band */ + TCA_FQ_OFFLOAD_HORIZON, /* dequeue paced packets within this horizon immediately (us units) */ + __TCA_FQ_MAX }; |