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net: airoha: Add missing PPE configurations in airoha_ppe_hw_init()

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Add the following PPE configuration in airoha_ppe_hw_init routine:
- 6RD hw offloading is currently not supported by Netfilter flowtable.
  Disable explicitly PPE 6RD offloading in order to prevent PPE to learn
  6RD flows and eventually interrupt the traffic.
- Add missing PPE bind rate configuration for L3 and L2 traffic.
  PPE bind rate configuration specifies the pps threshold to move a PPE
  entry state from UNBIND to BIND. Without this configuration this value
  is random.
- Set ageing thresholds to the values used in the vendor SDK in order to
  improve connection stability under load and avoid packet loss caused by
  fast aging.

Fixes: 00a7678310 ("net: airoha: Introduce flowtable offload support")
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/20260412-airoha_ppe_hw_init-missing-bits-v1-1-06ac670819e3@kernel.org
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
This commit is contained in:
Lorenzo Bianconi 2026-04-12 10:43:26 +02:00 committed by Paolo Abeni
parent 1acdfbdb51
commit b9d8b85668
1 changed files with 11 additions and 3 deletions
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14
drivers/net/ethernet/airoha/airoha_ppe.c
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@ -111,13 +111,13 @@ static void airoha_ppe_hw_init(struct airoha_ppe *ppe)
airoha_fe_rmw(eth, REG_PPE_BND_AGE0(i),
PPE_BIND_AGE0_DELTA_NON_L4 |
PPE_BIND_AGE0_DELTA_UDP,
FIELD_PREP(PPE_BIND_AGE0_DELTA_NON_L4, 1) |
FIELD_PREP(PPE_BIND_AGE0_DELTA_UDP, 12));
FIELD_PREP(PPE_BIND_AGE0_DELTA_NON_L4, 60) |
FIELD_PREP(PPE_BIND_AGE0_DELTA_UDP, 60));
airoha_fe_rmw(eth, REG_PPE_BND_AGE1(i),
PPE_BIND_AGE1_DELTA_TCP_FIN |
PPE_BIND_AGE1_DELTA_TCP,
FIELD_PREP(PPE_BIND_AGE1_DELTA_TCP_FIN, 1) |
FIELD_PREP(PPE_BIND_AGE1_DELTA_TCP, 7));
FIELD_PREP(PPE_BIND_AGE1_DELTA_TCP, 60));
airoha_fe_rmw(eth, REG_PPE_TB_HASH_CFG(i),
PPE_SRAM_TABLE_EN_MASK |
@ -145,7 +145,15 @@ static void airoha_ppe_hw_init(struct airoha_ppe *ppe)
FIELD_PREP(PPE_DRAM_TB_NUM_ENTRY_MASK,
dram_num_entries));
airoha_fe_rmw(eth, REG_PPE_BIND_RATE(i),
PPE_BIND_RATE_L2B_BIND_MASK |
PPE_BIND_RATE_BIND_MASK,
FIELD_PREP(PPE_BIND_RATE_L2B_BIND_MASK, 0x1e) |
FIELD_PREP(PPE_BIND_RATE_BIND_MASK, 0x1e));
airoha_fe_wr(eth, REG_PPE_HASH_SEED(i), PPE_HASH_SEED);
airoha_fe_clear(eth, REG_PPE_PPE_FLOW_CFG(i),
PPE_FLOW_CFG_IP6_6RD_MASK);
for (p = 0; p < ARRAY_SIZE(eth->ports); p++)
airoha_fe_rmw(eth, REG_PPE_MTU(i, p),