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net: airoha: Add PPPoE offload support

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Introduce flowtable hw acceleration for PPPoE traffic.

Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Link: https://patch.msgid.link/20250609-b4-airoha-flowtable-pppoe-v1-1-1520fa7711b4@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Lorenzo Bianconi
2025-06-09 22:28:40 +02:00
committed by Jakub Kicinski
parent 265c6ff0f8
commit 0097c4195b
1 changed files with 23 additions and 8 deletions
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31
drivers/net/ethernet/airoha/airoha_ppe.c
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@@ -232,6 +232,7 @@ static int airoha_ppe_foe_entry_prepare(struct airoha_eth *eth,
FIELD_PREP(AIROHA_FOE_IB1_BIND_UDP, l4proto == IPPROTO_UDP) |
FIELD_PREP(AIROHA_FOE_IB1_BIND_VLAN_LAYER, data->vlan.num) |
FIELD_PREP(AIROHA_FOE_IB1_BIND_VPM, data->vlan.num) |
FIELD_PREP(AIROHA_FOE_IB1_BIND_PPPOE, data->pppoe.num) |
AIROHA_FOE_IB1_BIND_TTL;
hwe->ib1 = val;
@@ -281,33 +282,42 @@ static int airoha_ppe_foe_entry_prepare(struct airoha_eth *eth,
hwe->ipv6.data = qdata;
hwe->ipv6.ib2 = val;
l2 = &hwe->ipv6.l2;
l2->etype = ETH_P_IPV6;
} else {
hwe->ipv4.data = qdata;
hwe->ipv4.ib2 = val;
l2 = &hwe->ipv4.l2.common;
l2->etype = ETH_P_IP;
}
l2->dest_mac_hi = get_unaligned_be32(data->eth.h_dest);
l2->dest_mac_lo = get_unaligned_be16(data->eth.h_dest + 4);
if (type <= PPE_PKT_TYPE_IPV4_DSLITE) {
struct airoha_foe_mac_info *mac_info;
l2->src_mac_hi = get_unaligned_be32(data->eth.h_source);
hwe->ipv4.l2.src_mac_lo =
get_unaligned_be16(data->eth.h_source + 4);
mac_info = (struct airoha_foe_mac_info *)l2;
mac_info->pppoe_id = data->pppoe.sid;
} else {
l2->src_mac_hi = FIELD_PREP(AIROHA_FOE_MAC_SMAC_ID, smac_id);
l2->src_mac_hi = FIELD_PREP(AIROHA_FOE_MAC_SMAC_ID, smac_id) |
FIELD_PREP(AIROHA_FOE_MAC_PPPOE_ID,
data->pppoe.sid);
}
if (data->vlan.num) {
l2->etype = dsa_port >= 0 ? BIT(dsa_port) : 0;
l2->vlan1 = data->vlan.hdr[0].id;
if (data->vlan.num == 2)
l2->vlan2 = data->vlan.hdr[1].id;
} else if (dsa_port >= 0) {
l2->etype = BIT(15) | BIT(dsa_port);
} else if (type >= PPE_PKT_TYPE_IPV6_ROUTE_3T) {
l2->etype = ETH_P_IPV6;
} else {
l2->etype = ETH_P_IP;
}
if (dsa_port >= 0) {
l2->etype = BIT(dsa_port);
l2->etype |= !data->vlan.num ? BIT(15) : 0;
} else if (data->pppoe.num) {
l2->etype = ETH_P_PPP_SES;
}
return 0;
@@ -957,6 +967,11 @@ static int airoha_ppe_flow_offload_replace(struct airoha_gdm_port *port,
case FLOW_ACTION_VLAN_POP:
break;
case FLOW_ACTION_PPPOE_PUSH:
if (data.pppoe.num == 1 || data.vlan.num == 2)
return -EOPNOTSUPP;
data.pppoe.sid = act->pppoe.sid;
data.pppoe.num++;
break;
default:
return -EOPNOTSUPP;