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Message-Id: <20231219081453.718489-1-faizal.abdul.rahim@linux.intel.com> Date: Tue, 19 Dec 2023 03:14:49 -0500 From: Faizal Rahim <faizal.abdul.rahim@...ux.intel.com> To: Vladimir Oltean <vladimir.oltean@....com>, Vinicius Costa Gomes <vinicius.gomes@...el.com>, Jamal Hadi Salim <jhs@...atatu.com>, Cong Wang <xiyou.wangcong@...il.com>, Jiri Pirko <jiri@...nulli.us>, "David S . Miller" <davem@...emloft.net>, Eric Dumazet <edumazet@...gle.com>, Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com> Cc: netdev@...r.kernel.org, linux-kernel@...r.kernel.org Subject: [PATCH v3 net 0/4] qbv cycle time extension/truncation According to IEEE Std. 802.1Q-2018 section Q.5 CycleTimeExtension, the Cycle Time Extension variable allows this extension of the last old cycle to be done in a defined way. If the last complete old cycle would normally end less than OperCycleTimeExtension nanoseconds before the new base time, then the last complete cycle before AdminBaseTime is reached is extended so that it ends at AdminBaseTime. Changes in v3: - Removed the last 3 patches related to fixing cycle time adjustment for the "current entry". This is to simplify this patch series submission which only covers cycle time adjustment for the "next entry". - Negative correction calculation in get_cycle_time_correction() is guarded so that it doesn't exceed interval - Some rename (macro, function) - Transport commit message comments to the code comments - Removed unnecessary null check - Reword commit message Changes in v2: - Added 's64 cycle_time_correction' in 'sched_gate_list struct'. - Removed sched_changed created in v1 since the new cycle_time_correction field can also serve to indicate the need for a schedule change. - Added 'bool correction_active' in 'struct sched_entry' to represent the correction state from the entry's perspective and return corrected interval value when active. - Fix cycle time correction logics for the next entry in advance_sched() - Fix and implement proper cycle time correction logics for current entry in taprio_start_sched() v2 at: https://lore.kernel.org/lkml/20231107112023.676016-1-faizal.abdul.rahim@linux.intel.com/ v1 at: https://lore.kernel.org/lkml/20230530082541.495-1-muhammad.husaini.zulkifli@intel.com/ Faizal Rahim (4): net/sched: taprio: fix too early schedules switching net/sched: taprio: fix cycle time adjustment for next entry net/sched: taprio: fix impacted fields value during cycle time adjustment net/sched: taprio: get corrected value of cycle_time and interval net/sched/sch_taprio.c | 178 +++++++++++++++++++++++++++++++---------- 1 file changed, 135 insertions(+), 43 deletions(-) -- 2.25.1
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