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| author | Eric Dumazet <edumazet@google.com> | 2024-10-03 12:12:18 +0000 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2024-10-04 15:37:53 -0700 |
| commit | f858cc9eed5b05cbe38d7ffd2787c21e3718eb7d (patch) | |
| tree | 0718e64a02e4265c1647c1588d31985399ea5e18 /net/ipv4/tcp_timer.c | |
| parent | 3d07b691ee707c00afaf365440975e81bb96cd9b (diff) | |
| download | linux-f858cc9eed5b05cbe38d7ffd2787c21e3718eb7d.tar.gz linux-f858cc9eed5b05cbe38d7ffd2787c21e3718eb7d.tar.bz2 linux-f858cc9eed5b05cbe38d7ffd2787c21e3718eb7d.zip | |
net: add IFLA_MAX_PACING_OFFLOAD_HORIZON device attribute
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'.
This patch adds dev->max_pacing_offload_horizon expressing
this timing wheel horizon in nsec units.
This is a read-only attribute.
Unless a driver sets it, dev->max_pacing_offload_horizon
is zero.
v2: addressed Jakub feedback ( https://lore.kernel.org/netdev/20240930152304.472767-2-edumazet@google.com/T/#mf6294d714c41cc459962154cc2580ce3c9693663 )
v3: added yaml doc (also per Jakub feedback)
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: Willem de Bruijn <willemb@google.com>
Link: https://patch.msgid.link/20241003121219.2396589-2-edumazet@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'net/ipv4/tcp_timer.c')
0 files changed, 0 insertions, 0 deletions