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linux/drivers/net/ethernet/mellanox/mlxsw
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Petr Machata 0fe6402316 mlxsw: spectrum: Set minimum shaper on MC TCs 
An MC-aware mode was introduced in commit 7b81953066 ("mlxsw:
spectrum: Configure MC-aware mode on mlxsw ports"). In MC-aware mode,
BUM traffic gets a special treatment by being assigned to a separate set
of traffic classes 8..15. Pairs of TCs 0 and 8, 1 and 9, etc., are then
configured to strictly prioritize the lower-numbered ones. The intention
is to prevent BUM traffic from flooding the switch and push out all UC
traffic, which would otherwise happen, and instead give UC traffic
precedence.

However strictly prioritizing UC traffic has the effect that UC overload
pushes out all BUM traffic, such as legitimate ARP queries. These
packets are kept in queues for a while, but under sustained UC overload,
their lifetime eventually expires and these packets are dropped. That is
detrimental to network performance as well.

Therefore configure the MC TCs (8..15) with minimum shaper of 200Mbps (a
minimum permitted value) to allow a trickle of necessary control traffic
to get through.

Fixes: 7b81953066 ("mlxsw: spectrum: Configure MC-aware mode on mlxsw ports")
Signed-off-by: Petr Machata <petrm@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
 		2018-10-31 12:56:58 -07:00
..
Kconfig mlxsw: spectrum_acl: Implement common eRP core 2018-07-25 16:46:01 -07:00
Makefile mlxsw: spectrum_nve: Implement common NVE core 2018-10-17 17:45:07 -07:00
cmd.h mlxsw: Replace license text with SPDX identifiers and adjust copyrights 2018-08-09 10:36:10 -07:00
core.c mlxsw: core: Fix devlink unregister flow 2018-10-29 20:48:00 -07:00
core.h mlxsw: core: Fix use-after-free when flashing firmware during init 2018-10-17 22:25:45 -07:00
core_acl_flex_actions.c mlxsw: Replace license text with SPDX identifiers and adjust copyrights 2018-08-09 10:36:10 -07:00
core_acl_flex_actions.h mlxsw: Replace license text with SPDX identifiers and adjust copyrights 2018-08-09 10:36:10 -07:00
core_acl_flex_keys.c mlxsw: Replace license text with SPDX identifiers and adjust copyrights 2018-08-09 10:36:10 -07:00
core_acl_flex_keys.h mlxsw: Replace license text with SPDX identifiers and adjust copyrights 2018-08-09 10:36:10 -07:00
core_hwmon.c mlxsw: core: Fix use-after-free when flashing firmware during init 2018-10-17 22:25:45 -07:00
core_thermal.c mlxsw: Replace license text with SPDX identifiers and adjust copyrights 2018-08-09 10:36:10 -07:00
emad.h mlxsw: Replace license text with SPDX identifiers and adjust copyrights 2018-08-09 10:36:10 -07:00
i2c.c mlxsw: remove unused arrays mlxsw_i2c_driver_name and mlxsw_pci_driver_name 2018-08-10 10:23:51 -07:00
i2c.h mlxsw: Replace license text with SPDX identifiers and adjust copyrights 2018-08-09 10:36:10 -07:00
ib.h mlxsw: Replace license text with SPDX identifiers and adjust copyrights 2018-08-09 10:36:10 -07:00
item.h mlxsw: Replace license text with SPDX identifiers and adjust copyrights 2018-08-09 10:36:10 -07:00
minimal.c mlxsw: Replace license text with SPDX identifiers and adjust copyrights 2018-08-09 10:36:10 -07:00
pci.c mlxsw: pci: Derive event type from event queue number 2018-10-04 09:53:03 -07:00
pci.h mlxsw: Replace license text with SPDX identifiers and adjust copyrights 2018-08-09 10:36:10 -07:00
pci_hw.h mlxsw: pci: Fix a typo 2018-10-10 22:22:07 -07:00
port.h mlxsw: Replace license text with SPDX identifiers and adjust copyrights 2018-08-09 10:36:10 -07:00
reg.h mlxsw: reg: QEEC: Add minimum shaper fields 2018-10-31 12:56:58 -07:00
resources.h mlxsw: resources: Add NVE resources 2018-10-11 10:08:23 -07:00
spectrum.c mlxsw: spectrum: Set minimum shaper on MC TCs 2018-10-31 12:56:58 -07:00
spectrum.h mlxsw: spectrum: Enable VxLAN enslavement to bridges 2018-10-17 17:45:08 -07:00
spectrum1_acl_tcam.c mlxsw: Replace license text with SPDX identifiers and adjust copyrights 2018-08-09 10:36:10 -07:00
spectrum1_kvdl.c mlxsw: Replace license text with SPDX identifiers and adjust copyrights 2018-08-09 10:36:10 -07:00
spectrum1_mr_tcam.c mlxsw: Replace license text with SPDX identifiers and adjust copyrights 2018-08-09 10:36:10 -07:00
spectrum2_acl_tcam.c mlxsw: Replace license text with SPDX identifiers and adjust copyrights 2018-08-09 10:36:10 -07:00
spectrum2_kvdl.c mlxsw: spectrum: Add a new type of KVD linear record 2018-10-11 10:08:22 -07:00
spectrum2_mr_tcam.c mlxsw: Replace license text with SPDX identifiers and adjust copyrights 2018-08-09 10:36:10 -07:00
spectrum_acl.c mlxsw: Replace license text with SPDX identifiers and adjust copyrights 2018-08-09 10:36:10 -07:00
spectrum_acl_atcam.c mlxsw: Replace license text with SPDX identifiers and adjust copyrights 2018-08-09 10:36:10 -07:00
spectrum_acl_ctcam.c mlxsw: Replace license text with SPDX identifiers and adjust copyrights 2018-08-09 10:36:10 -07:00
spectrum_acl_erp.c mlxsw: Replace license text with SPDX identifiers and adjust copyrights 2018-08-09 10:36:10 -07:00
spectrum_acl_flex_actions.c mlxsw: Replace license text with SPDX identifiers and adjust copyrights 2018-08-09 10:36:10 -07:00
spectrum_acl_flex_actions.h mlxsw: Replace license text with SPDX identifiers and adjust copyrights 2018-08-09 10:36:10 -07:00
spectrum_acl_flex_keys.c mlxsw: Replace license text with SPDX identifiers and adjust copyrights 2018-08-09 10:36:10 -07:00
spectrum_acl_tcam.c mlxsw: Replace license text with SPDX identifiers and adjust copyrights 2018-08-09 10:36:10 -07:00
spectrum_acl_tcam.h mlxsw: Replace license text with SPDX identifiers and adjust copyrights 2018-08-09 10:36:10 -07:00
spectrum_buffers.c mlxsw: spectrum_buffers: Tweak SBMM configuration 2018-09-20 07:46:01 -07:00
spectrum_cnt.c mlxsw: Replace license text with SPDX identifiers and adjust copyrights 2018-08-09 10:36:10 -07:00
spectrum_cnt.h mlxsw: Replace license text with SPDX identifiers and adjust copyrights 2018-08-09 10:36:10 -07:00
spectrum_dcb.c mlxsw: Replace license text with SPDX identifiers and adjust copyrights 2018-08-09 10:36:10 -07:00
spectrum_dpipe.c mlxsw: Replace license text with SPDX identifiers and adjust copyrights 2018-08-09 10:36:10 -07:00
spectrum_dpipe.h mlxsw: Replace license text with SPDX identifiers and adjust copyrights 2018-08-09 10:36:10 -07:00
spectrum_fid.c mlxsw: spectrum_fid: Clear NVE configuration when destroying 802.1D FIDs 2018-10-17 17:45:07 -07:00
spectrum_flower.c net_sched: remove list_head from tc_action 2018-08-21 12:45:44 -07:00
spectrum_ipip.c mlxsw: Replace license text with SPDX identifiers and adjust copyrights 2018-08-09 10:36:10 -07:00
spectrum_ipip.h mlxsw: Replace license text with SPDX identifiers and adjust copyrights 2018-08-09 10:36:10 -07:00
spectrum_kvdl.c mlxsw: Replace license text with SPDX identifiers and adjust copyrights 2018-08-09 10:36:10 -07:00
spectrum_mr.c mlxsw: Replace license text with SPDX identifiers and adjust copyrights 2018-08-09 10:36:10 -07:00
spectrum_mr.h mlxsw: Replace license text with SPDX identifiers and adjust copyrights 2018-08-09 10:36:10 -07:00
spectrum_mr_tcam.c mlxsw: Replace license text with SPDX identifiers and adjust copyrights 2018-08-09 10:36:10 -07:00
spectrum_mr_tcam.h mlxsw: Replace license text with SPDX identifiers and adjust copyrights 2018-08-09 10:36:10 -07:00
spectrum_nve.c mlxsw: spectrum_nve: Implement common NVE core 2018-10-17 17:45:07 -07:00
spectrum_nve.h mlxsw: spectrum_nve: Implement common NVE core 2018-10-17 17:45:07 -07:00
spectrum_nve_vxlan.c mlxsw: spectrum_nve: Implement VxLAN operations 2018-10-17 17:45:07 -07:00
spectrum_qdisc.c mlxsw: Replace license text with SPDX identifiers and adjust copyrights 2018-08-09 10:36:10 -07:00
spectrum_router.c mlxsw: spectrum_router: Configure matching local routes for NVE decap 2018-10-17 17:45:07 -07:00
spectrum_router.h mlxsw: spectrum: Move L3 protocol and address definitions to global header file 2018-10-11 10:08:22 -07:00
spectrum_span.c mlxsw: Replace license text with SPDX identifiers and adjust copyrights 2018-08-09 10:36:10 -07:00
spectrum_span.h mlxsw: Replace license text with SPDX identifiers and adjust copyrights 2018-08-09 10:36:10 -07:00
spectrum_switchdev.c mlxsw: spectrum_switchdev: Don't ignore deletions of learned MACs 2018-10-29 20:48:00 -07:00
spectrum_switchdev.h mlxsw: Replace license text with SPDX identifiers and adjust copyrights 2018-08-09 10:36:10 -07:00
switchib.c mlxsw: Replace license text with SPDX identifiers and adjust copyrights 2018-08-09 10:36:10 -07:00
switchx2.c mlxsw: Replace license text with SPDX identifiers and adjust copyrights 2018-08-09 10:36:10 -07:00
trap.h mlxsw: spectrum: Add NVE packet traps 2018-10-11 10:08:23 -07:00
txheader.h mlxsw: Replace license text with SPDX identifiers and adjust copyrights 2018-08-09 10:36:10 -07:00