From f8253df553537518e9f87fa2eb599d68a2df092b Mon Sep 17 00:00:00 2001 From: Nogah Frankel Date: Wed, 10 Jan 2018 14:59:59 +0100 Subject: [PATCH] net: sch: red: Change offloaded xstats to be incremental Change the value of the xstats requested from the driver for offloaded RED to be incremental, like the normal stats. It increases consistency - if a qdisc stops being offloaded its xstats don't change. Signed-off-by: Nogah Frankel Reviewed-by: Yuval Mintz Signed-off-by: Jiri Pirko Signed-off-by: David S. Miller --- .../ethernet/mellanox/mlxsw/spectrum_qdisc.c | 15 +++++++++--- net/sched/sch_red.c | 24 +++++++------------ 2 files changed, 20 insertions(+), 19 deletions(-) diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_qdisc.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum_qdisc.c index 3e2841872f64..55e4e4d0dad3 100644 --- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_qdisc.c +++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_qdisc.c @@ -212,6 +212,7 @@ mlxsw_sp_qdisc_get_red_xstats(struct mlxsw_sp_port *mlxsw_sp_port, u32 handle, { struct red_stats *xstats_base = &mlxsw_sp_qdisc->xstats_base; struct mlxsw_sp_port_xstats *xstats; + int early_drops, marks, pdrops; if (mlxsw_sp_qdisc->handle != handle || mlxsw_sp_qdisc->type != MLXSW_SP_QDISC_RED) @@ -219,9 +220,17 @@ mlxsw_sp_qdisc_get_red_xstats(struct mlxsw_sp_port *mlxsw_sp_port, u32 handle, xstats = &mlxsw_sp_port->periodic_hw_stats.xstats; - res->prob_drop = xstats->wred_drop[tclass_num] - xstats_base->prob_drop; - res->prob_mark = xstats->ecn - xstats_base->prob_mark; - res->pdrop = xstats->tail_drop[tclass_num] - xstats_base->pdrop; + early_drops = xstats->wred_drop[tclass_num] - xstats_base->prob_drop; + marks = xstats->ecn - xstats_base->prob_mark; + pdrops = xstats->tail_drop[tclass_num] - xstats_base->pdrop; + + res->pdrop += pdrops; + res->prob_drop += early_drops; + res->prob_mark += marks; + + xstats_base->pdrop += pdrops; + xstats_base->prob_drop += early_drops; + xstats_base->prob_mark += marks; return 0; } diff --git a/net/sched/sch_red.c b/net/sched/sch_red.c index a392eaa4a0b4..0af1c1254e0b 100644 --- a/net/sched/sch_red.c +++ b/net/sched/sch_red.c @@ -344,32 +344,24 @@ static int red_dump_stats(struct Qdisc *sch, struct gnet_dump *d) { struct red_sched_data *q = qdisc_priv(sch); struct net_device *dev = qdisc_dev(sch); - struct tc_red_xstats st = { - .early = q->stats.prob_drop + q->stats.forced_drop, - .pdrop = q->stats.pdrop, - .other = q->stats.other, - .marked = q->stats.prob_mark + q->stats.forced_mark, - }; + struct tc_red_xstats st = {0}; if (sch->flags & TCQ_F_OFFLOADED) { - struct red_stats hw_stats = {0}; struct tc_red_qopt_offload hw_stats_request = { .command = TC_RED_XSTATS, .handle = sch->handle, .parent = sch->parent, { - .xstats = &hw_stats, + .xstats = &q->stats, }, }; - if (!dev->netdev_ops->ndo_setup_tc(dev, - TC_SETUP_QDISC_RED, - &hw_stats_request)) { - st.early += hw_stats.prob_drop + hw_stats.forced_drop; - st.pdrop += hw_stats.pdrop; - st.other += hw_stats.other; - st.marked += hw_stats.prob_mark + hw_stats.forced_mark; - } + dev->netdev_ops->ndo_setup_tc(dev, TC_SETUP_QDISC_RED, + &hw_stats_request); } + st.early = q->stats.prob_drop + q->stats.forced_drop; + st.pdrop = q->stats.pdrop; + st.other = q->stats.other; + st.marked = q->stats.prob_mark + q->stats.forced_mark; return gnet_stats_copy_app(d, &st, sizeof(st)); } -- 2.30.2