linux/net/dsa
Vladimir Oltean 5f06c63bd3 net: dsa: sja1105: Advertise the 8 TX queues
This is a preparation patch for the tc-taprio offload (and potentially
for other future offloads such as tc-mqprio).

Instead of looking directly at skb->priority during xmit, let's get the
netdev queue and the queue-to-traffic-class mapping, and put the
resulting traffic class into the dsa_8021q PCP field. The switch is
configured with a 1-to-1 PCP-to-ingress-queue-to-egress-queue mapping
(see vlan_pmap in sja1105_main.c), so the effect is that we can inject
into a front-panel's egress traffic class through VLAN tagging from
Linux, completely transparently.

Unfortunately the switch doesn't look at the VLAN PCP in the case of
management traffic to/from the CPU (link-local frames at
01-80-C2-xx-xx-xx or 01-1B-19-xx-xx-xx) so we can't alter the
transmission queue of this type of traffic on a frame-by-frame basis. It
is only selected through the "hostprio" setting which ATM is harcoded in
the driver to 7.

Signed-off-by: Vladimir Oltean <olteanv@gmail.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-09-16 21:32:57 +02:00
..
dsa2.c net: dsa: Fix off-by-one number of calls to devlink_port_unregister 2019-09-02 11:59:29 -07:00
dsa_priv.h net: dsa: add support for BRIDGE_MROUTER attribute 2019-07-09 14:49:34 -07:00
dsa.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
Kconfig net: dsa: microchip: remove NET_DSA_TAG_KSZ_COMMON 2019-09-12 11:36:12 +01:00
Makefile net: dsa: microchip: remove NET_DSA_TAG_KSZ_COMMON 2019-09-12 11:36:12 +01:00
master.c net: dsa: dump CPU port regs through master 2019-08-06 14:08:32 -07:00
port.c net: dsa: check bridge VLAN in slave operations 2019-08-27 20:17:27 -07:00
slave.c net: dsa: Pass ndo_setup_tc slave callback to drivers 2019-09-16 21:32:57 +02:00
switch.c net: dsa: program VLAN on CPU port from slave 2019-08-27 20:17:28 -07:00
tag_8021q.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2019-09-02 11:20:17 -07:00
tag_brcm.c dsa: tag_brcm: Fix build error without CONFIG_NET_DSA_TAG_BRCM_PREPEND 2019-05-10 15:06:45 -07:00
tag_dsa.c dsa: Cleanup unneeded table and make tag structures static 2019-04-28 19:41:01 -04:00
tag_edsa.c dsa: Cleanup unneeded table and make tag structures static 2019-04-28 19:41:01 -04:00
tag_gswip.c dsa: Cleanup unneeded table and make tag structures static 2019-04-28 19:41:01 -04:00
tag_ksz.c net: dsa: ksz: Add KSZ8795 tag code 2019-07-30 15:12:50 -07:00
tag_lan9303.c dsa: Cleanup unneeded table and make tag structures static 2019-04-28 19:41:01 -04:00
tag_mtk.c dsa: Cleanup unneeded table and make tag structures static 2019-04-28 19:41:01 -04:00
tag_qca.c dsa: Cleanup unneeded table and make tag structures static 2019-04-28 19:41:01 -04:00
tag_sja1105.c net: dsa: sja1105: Advertise the 8 TX queues 2019-09-16 21:32:57 +02:00
tag_trailer.c dsa: Cleanup unneeded table and make tag structures static 2019-04-28 19:41:01 -04:00