From: Marek Kasiewicz <[email protected]> Reduce ICE_SCHED_DFLT_BURST_SIZE from 15 KB to 2 KB to improve TX rate limiter granularity. The E810 TX scheduler uses a token bucket algorithm where the burst size controls the maximum bytes sent in a single burst before the rate limiter throttles.
A 15 KB burst allows micro-bursts of ~10 max-size frames, which violates tight inter-packet spacing requirements in time-sensitive networking applications such as SMPTE ST 2110-21 narrow-sender compliance. Reducing to 2 KB forces near-constant-rate output matching the configured shaper profile. Signed-off-by: Marek Kasiewicz <[email protected]> Signed-off-by: Dawid Wesierski <[email protected]> --- drivers/net/intel/ice/base/ice_type.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/intel/ice/base/ice_type.h b/drivers/net/intel/ice/base/ice_type.h index 6d8c187689..39569ff3e3 100644 --- a/drivers/net/intel/ice/base/ice_type.h +++ b/drivers/net/intel/ice/base/ice_type.h @@ -1100,7 +1100,7 @@ enum ice_rl_type { #define ICE_SCHED_NO_SHARED_RL_PROF_ID 0xFFFF #define ICE_SCHED_DFLT_BW_WT 4 #define ICE_SCHED_INVAL_PROF_ID 0xFFFF -#define ICE_SCHED_DFLT_BURST_SIZE (15 * 1024) /* in bytes (15k) */ +#define ICE_SCHED_DFLT_BURST_SIZE (2 * 1024) /* in bytes (2k) */ /* Access Macros for Tx Sched RL Profile data */ #define ICE_TXSCHED_GET_RL_PROF_ID(p) LE16_TO_CPU((p)->info.profile_id) -- 2.47.3 --------------------------------------------------------------------- Intel Technology Poland sp. z o.o. ul. Slowackiego 173 | 80-298 Gdansk | Sad Rejonowy Gdansk Polnoc | VII Wydzial Gospodarczy Krajowego Rejestru Sadowego - KRS 101882 | NIP 957-07-52-316 | Kapital zakladowy 200.000 PLN. Spolka oswiadcza, ze posiada status duzego przedsiebiorcy w rozumieniu ustawy z dnia 8 marca 2013 r. o przeciwdzialaniu nadmiernym opoznieniom w transakcjach handlowych. Ta wiadomosc wraz z zalacznikami jest przeznaczona dla okreslonego adresata i moze zawierac informacje poufne. W razie przypadkowego otrzymania tej wiadomosci, prosimy o powiadomienie nadawcy oraz trwale jej usuniecie; jakiekolwiek przegladanie lub rozpowszechnianie jest zabronione. This e-mail and any attachments may contain confidential material for the sole use of the intended recipient(s). If you are not the intended recipient, please contact the sender and delete all copies; any review or distribution by others is strictly prohibited.
