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- Log ----------------------------------------------------------------- commit 160f71a48b5891b49a84cc849f08c1ff99d26b3f Author: Dmitriy Krot globaxbiz@gmail.com Date: Fri May 12 03:00:13 2017 +0300

linux-gen: tm: fix wrr/wfq bug when weight=1

Usage of 0x10000 in the inverted weight calculation causes overflow of uint16_t if weight=1. As a result of this bug, frame len used for virtual finish time calculation is always zero, despite of packet size, so packets from input with weight=1 always pass first.

Signed-off-by: Dmitriy Krot globaxbiz@gmail.com Reviewed-and-tested-by: Bill Fischofer bill.fischofer@linaro.org Signed-off-by: Maxim Uvarov maxim.uvarov@linaro.org

diff --git a/platform/linux-generic/odp_traffic_mngr.c b/platform/linux-generic/odp_traffic_mngr.c index 4e9358b9..a93b3ba9 100644 --- a/platform/linux-generic/odp_traffic_mngr.c +++ b/platform/linux-generic/odp_traffic_mngr.c @@ -3238,7 +3238,7 @@ static void tm_sched_params_cvt_to(odp_tm_sched_params_t *odp_sched_params, if (weight == 0) inv_weight = 0; else - inv_weight = 0x10000 / weight; + inv_weight = 0xFFFF / weight;

tm_sched_params->sched_modes[priority] = sched_mode; tm_sched_params->inverted_weights[priority] = inv_weight; @@ -3254,7 +3254,7 @@ static void tm_sched_params_cvt_from(tm_sched_params_t *tm_sched_params, for (priority = 0; priority < ODP_TM_MAX_PRIORITIES; priority++) { sched_mode = tm_sched_params->sched_modes[priority]; inv_weight = tm_sched_params->inverted_weights[priority]; - weight = 0x10000 / inv_weight; + weight = 0xFFFF / inv_weight;

odp_sched_params->sched_modes[priority] = sched_mode; odp_sched_params->sched_weights[priority] = weight;

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Summary of changes: platform/linux-generic/odp_traffic_mngr.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)

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