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From: Stephen Hemminger <stephen@networkplumber.org>
To: dev@dpdk.org
Cc: Stephen Hemminger <shemming@brocade.com>
Subject: [dpdk-dev] [PATCH v2 1/7] rte_sched: make RED optional at runtime
Date: Wed,  4 Feb 2015 22:04:48 -0800
Message-ID: <1423116294-17080-1-git-send-email-stephen@networkplumber.org> (raw)

From: Stephen Hemminger <shemming@brocade.com>

Want to be able to build with RTE_SCHED_RED enabled but
allow disabling RED on a per-queue basis at runtime.

RED is disabled unless min/max thresholds set.

Signed-off-by: Stephen Hemmminger <stephen@networkplumber.org>
---
 lib/librte_sched/rte_sched.c | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/lib/librte_sched/rte_sched.c b/lib/librte_sched/rte_sched.c
index 95dee27..6928c98 100644
--- a/lib/librte_sched/rte_sched.c
+++ b/lib/librte_sched/rte_sched.c
@@ -636,6 +636,12 @@ rte_sched_port_config(struct rte_sched_port_params *params)
 		uint32_t j;
 
 		for (j = 0; j < e_RTE_METER_COLORS; j++) {
+			/* if min/max are both zero, then RED is disabled */
+			if ((params->red_params[i][j].min_th |
+			     params->red_params[i][j].max_th) == 0) {
+				continue;
+			}
+
 			if (rte_red_config_init(&port->red_config[i][j],
 				params->red_params[i][j].wq_log2,
 				params->red_params[i][j].min_th,
@@ -1069,6 +1075,9 @@ rte_sched_port_red_drop(struct rte_sched_port *port, struct rte_mbuf *pkt, uint3
 	color = rte_sched_port_pkt_read_color(pkt);
 	red_cfg = &port->red_config[tc_index][color];
 
+	if ( (red_cfg->min_th | red_cfg->max_th) == 0)
+		return 0;
+
 	qe = port->queue_extra + qindex;
 	red = &qe->red;
 
-- 
2.1.4

             reply	other threads:[~2015-02-05  6:05 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-02-05  6:04 Stephen Hemminger [this message]
2015-02-05  6:04 ` [dpdk-dev] [PATCH v2 2/7] rte_sched: expand scheduler hierarchy for more VLAN's Stephen Hemminger
2015-02-05  9:57   ` Ananyev, Konstantin
2015-02-20 18:18   ` Dumitrescu, Cristian
2015-02-05  6:04 ` [dpdk-dev] [PATCH v2 3/7] rte_sched: keep track of RED drops Stephen Hemminger
2015-02-20 18:22   ` Dumitrescu, Cristian
2015-02-20 17:54 ` [dpdk-dev] [PATCH v2 1/7] rte_sched: make RED optional at runtime Dumitrescu, Cristian

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