From: Stephen Hemminger <shemm...@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 at 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..3b5acd1 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
