IEEE802.1Q-2004 superseeds IEEE802.1D-2004. Now Priority Code Point (PCP)
2 is no longer at a lower priority than PCP 0. PCP 1 (Background) is still
at a lower priority than PCP 0 (Best Effort).
Reference:
IEEE802.1Q-2004, Standard for Local and metropolitan area networks
Table G-2 - Traffic type acronyms
Table G-3 - Defining traffic types
Signed-off-by: Roger Quadros <rogerq@xxxxxxxxxx>
---
drivers/net/ethernet/ti/cpsw_ale.c | 25 ++++++++++++++-----------
1 file changed, 14 insertions(+), 11 deletions(-)
diff --git a/drivers/net/ethernet/ti/cpsw_ale.c b/drivers/net/ethernet/ti/cpsw_ale.c
index 8d02d2b21429..7dadd95cadc5 100644
--- a/drivers/net/ethernet/ti/cpsw_ale.c
+++ b/drivers/net/ethernet/ti/cpsw_ale.c
@@ -1692,26 +1692,29 @@ static void cpsw_ale_policer_reset(struct cpsw_ale *ale)
void cpsw_ale_classifier_setup_default(struct cpsw_ale *ale, int num_rx_ch)
{
int pri, idx;
- /* IEEE802.1D-2004, Standard for Local and metropolitan area networks
+ /* IEEE802.1Q-2004, Standard for Local and metropolitan area networks
* Table G-2 - Traffic type acronyms
* Table G-3 - Defining traffic types
- * User priority values 1 and 2 effectively communicate a lower
- * priority than 0. In the below table 0 is assigned to higher priority
- * thread than 1 and 2 wherever possible.
+ * Also: https://en.wikipedia.org/wiki/IEEE_P802.1p#Priority_levels
+ * Priority Code Point (PCP) value 1 (Background) communicates a lower
+ * priority than 0 (Best Effort). In the below table PCP 0 is assigned
+ * to a higher priority thread than PCP 1 wherever possible.
* The below table maps which thread the user priority needs to be
* sent to for a given number of threads (RX channels). Upper threads
* have higher priority.
* e.g. if number of threads is 8 then user priority 0 will map to
- * pri_thread_map[8-1][0] i.e. thread 2
+ * pri_thread_map[8-1][0] i.e. thread 1
*/
- int pri_thread_map[8][8] = { { 0, 0, 0, 0, 0, 0, 0, 0, },
+
+ int pri_thread_map[8][8] = { /* BK,BE,EE,CA,VI,VO,IC,NC */
+ { 0, 0, 0, 0, 0, 0, 0, 0, },
{ 0, 0, 0, 0, 1, 1, 1, 1, },
{ 0, 0, 0, 0, 1, 1, 2, 2, },
- { 1, 0, 0, 1, 2, 2, 3, 3, },
- { 1, 0, 0, 1, 2, 3, 4, 4, },
- { 1, 0, 0, 2, 3, 4, 5, 5, },
- { 1, 0, 0, 2, 3, 4, 5, 6, },
- { 2, 0, 1, 3, 4, 5, 6, 7, } };
+ { 0, 0, 1, 1, 2, 2, 3, 3, },
+ { 0, 0, 1, 1, 2, 2, 3, 4, },
+ { 1, 0, 2, 2, 3, 3, 4, 5, },
+ { 1, 0, 2, 3, 4, 4, 5, 6, },
+ { 1, 0, 2, 3, 4, 5, 6, 7 } };
cpsw_ale_policer_reset(ale);
--
2.34.1
