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author | Roger Quadros <rogerq@kernel.org> | 2024-11-14 14:36:52 +0100 |
---|---|---|
committer | David S. Miller <davem@davemloft.net> | 2024-11-18 13:00:21 +0100 |
commit | 01a45daebb2e9c93e0704d9e1b5954c5c63c49c4 (patch) | |
tree | 13f6d79c8e513031f1b703cd6aa5b26b0f538094 | |
parent | Merge branch 'udp-4tuple-hash' (diff) | |
download | linux-01a45daebb2e9c93e0704d9e1b5954c5c63c49c4.tar.xz linux-01a45daebb2e9c93e0704d9e1b5954c5c63c49c4.zip |
net: ethernet: ti: am65-cpsw: update pri_thread_map as per IEEE802.1Q-2014
IEEE802.1Q-2014 supersedes 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-2014, Standard for Local and metropolitan area networks
Table I-2 - Traffic type acronyms
Table I-3 - Defining traffic types
Signed-off-by: Roger Quadros <rogerq@kernel.org>
Reviewed-by: Siddharth Vadapalli <s-vadapalli@ti.com>
Reviewed-by: Guillaume Nault <gnault@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
-rw-r--r-- | drivers/net/ethernet/ti/cpsw_ale.c | 36 |
1 files changed, 22 insertions, 14 deletions
diff --git a/drivers/net/ethernet/ti/cpsw_ale.c b/drivers/net/ethernet/ti/cpsw_ale.c index d361caa80d05..52e4e350b734 100644 --- a/drivers/net/ethernet/ti/cpsw_ale.c +++ b/drivers/net/ethernet/ti/cpsw_ale.c @@ -1704,26 +1704,34 @@ 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 - * 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. - * The below table maps which thread the user priority needs to be + + /* Reference: + * IEEE802.1Q-2014, Standard for Local and metropolitan area networks + * Table I-2 - Traffic type acronyms + * Table I-3 - Defining traffic types + * Section I.4 Traffic types and priority values, states: + * "0 is thus used both for default priority and for Best Effort, and + * Background is associated with a priority value of 1. This means + * that the value 1 effectively communicates a lower priority than 0." + * + * In the table below, Priority Code Point (PCP) 0 is assigned + * to a higher priority thread than PCP 1 wherever possible. + * The table maps which thread the PCP traffic 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); |