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net: airoha: Add wlan flowtable TX offload

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Introduce support to offload the traffic received on the ethernet NIC
and forwarded to the wireless one using HW Packet Processor Engine (PPE)
capabilities.

Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Link: https://patch.msgid.link/20250814-airoha-en7581-wlan-tx-offload-v1-1-72e0a312003e@kernel.org
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
This commit is contained in:
Lorenzo Bianconi
2025-08-14 09:51:16 +02:00
committed by Paolo Abeni
parent 244ada9cb7
commit a8bdd935d1
2 changed files with 81 additions and 25 deletions
Download Patch File Download Diff File Expand all files Collapse all files

11
drivers/net/ethernet/airoha/airoha_eth.h
View File

@@ -252,6 +252,10 @@ enum {
#define AIROHA_FOE_MAC_SMAC_ID GENMASK(20, 16)
#define AIROHA_FOE_MAC_PPPOE_ID GENMASK(15, 0)
#define AIROHA_FOE_MAC_WDMA_QOS GENMASK(15, 12)
#define AIROHA_FOE_MAC_WDMA_BAND BIT(11)
#define AIROHA_FOE_MAC_WDMA_WCID GENMASK(10, 0)
struct airoha_foe_mac_info_common {
u16 vlan1;
u16 etype;
@@ -481,6 +485,13 @@ struct airoha_flow_table_entry {
unsigned long cookie;
};
struct airoha_wdma_info {
u8 idx;
u8 queue;
u16 wcid;
u8 bss;
};
/* RX queue to IRQ mapping: BIT(q) in IRQ(n) */
#define RX_IRQ0_BANK_PIN_MASK 0x839f
#define RX_IRQ1_BANK_PIN_MASK 0x7fe00000

95
drivers/net/ethernet/airoha/airoha_ppe.c
View File

@@ -190,6 +190,31 @@ static int airoha_ppe_flow_mangle_ipv4(const struct flow_action_entry *act,
return 0;
}
static int airoha_ppe_get_wdma_info(struct net_device *dev, const u8 *addr,
struct airoha_wdma_info *info)
{
struct net_device_path_stack stack;
struct net_device_path *path;
int err;
if (!dev)
return -ENODEV;
err = dev_fill_forward_path(dev, addr, &stack);
if (err)
return err;
path = &stack.path[stack.num_paths - 1];
if (path->type != DEV_PATH_MTK_WDMA)
return -1;
info->idx = path->mtk_wdma.wdma_idx;
info->bss = path->mtk_wdma.bss;
info->wcid = path->mtk_wdma.wcid;
return 0;
}
static int airoha_get_dsa_port(struct net_device **dev)
{
#if IS_ENABLED(CONFIG_NET_DSA)
@@ -220,9 +245,9 @@ static int airoha_ppe_foe_entry_prepare(struct airoha_eth *eth,
struct airoha_flow_data *data,
int l4proto)
{
int dsa_port = airoha_get_dsa_port(&dev);
u32 qdata = FIELD_PREP(AIROHA_FOE_SHAPER_ID, 0x7f), ports_pad, val;
int wlan_etype = -EINVAL, dsa_port = airoha_get_dsa_port(&dev);
struct airoha_foe_mac_info_common *l2;
u32 qdata, ports_pad, val;
u8 smac_id = 0xf;
memset(hwe, 0, sizeof(*hwe));
@@ -236,31 +261,47 @@ static int airoha_ppe_foe_entry_prepare(struct airoha_eth *eth,
AIROHA_FOE_IB1_BIND_TTL;
hwe->ib1 = val;
val = FIELD_PREP(AIROHA_FOE_IB2_PORT_AG, 0x1f) |
AIROHA_FOE_IB2_PSE_QOS;
if (dsa_port >= 0)
val |= FIELD_PREP(AIROHA_FOE_IB2_NBQ, dsa_port);
val = FIELD_PREP(AIROHA_FOE_IB2_PORT_AG, 0x1f);
if (dev) {
struct airoha_gdm_port *port = netdev_priv(dev);
u8 pse_port;
struct airoha_wdma_info info = {};
if (!airoha_is_valid_gdm_port(eth, port))
return -EINVAL;
if (!airoha_ppe_get_wdma_info(dev, data->eth.h_dest, &info)) {
val |= FIELD_PREP(AIROHA_FOE_IB2_NBQ, info.idx) |
FIELD_PREP(AIROHA_FOE_IB2_PSE_PORT,
FE_PSE_PORT_CDM4);
qdata |= FIELD_PREP(AIROHA_FOE_ACTDP, info.bss);
wlan_etype = FIELD_PREP(AIROHA_FOE_MAC_WDMA_BAND,
info.idx) |
FIELD_PREP(AIROHA_FOE_MAC_WDMA_WCID,
info.wcid);
} else {
struct airoha_gdm_port *port = netdev_priv(dev);
u8 pse_port;
if (dsa_port >= 0)
pse_port = port->id == 4 ? FE_PSE_PORT_GDM4 : port->id;
else
pse_port = 2; /* uplink relies on GDM2 loopback */
val |= FIELD_PREP(AIROHA_FOE_IB2_PSE_PORT, pse_port);
if (!airoha_is_valid_gdm_port(eth, port))
return -EINVAL;
/* For downlink traffic consume SRAM memory for hw forwarding
* descriptors queue.
*/
if (airhoa_is_lan_gdm_port(port))
val |= AIROHA_FOE_IB2_FAST_PATH;
if (dsa_port >= 0)
pse_port = port->id == 4 ? FE_PSE_PORT_GDM4
: port->id;
else
pse_port = 2; /* uplink relies on GDM2
* loopback
*/
smac_id = port->id;
val |= FIELD_PREP(AIROHA_FOE_IB2_PSE_PORT, pse_port) |
AIROHA_FOE_IB2_PSE_QOS;
/* For downlink traffic consume SRAM memory for hw
* forwarding descriptors queue.
*/
if (airhoa_is_lan_gdm_port(port))
val |= AIROHA_FOE_IB2_FAST_PATH;
if (dsa_port >= 0)
val |= FIELD_PREP(AIROHA_FOE_IB2_NBQ,
dsa_port);
smac_id = port->id;
}
}
if (is_multicast_ether_addr(data->eth.h_dest))
@@ -272,7 +313,6 @@ static int airoha_ppe_foe_entry_prepare(struct airoha_eth *eth,
if (type == PPE_PKT_TYPE_IPV6_ROUTE_3T)
hwe->ipv6.ports = ports_pad;
qdata = FIELD_PREP(AIROHA_FOE_SHAPER_ID, 0x7f);
if (type == PPE_PKT_TYPE_BRIDGE) {
airoha_ppe_foe_set_bridge_addrs(&hwe->bridge, &data->eth);
hwe->bridge.data = qdata;
@@ -313,7 +353,9 @@ static int airoha_ppe_foe_entry_prepare(struct airoha_eth *eth,
l2->vlan2 = data->vlan.hdr[1].id;
}
if (dsa_port >= 0) {
if (wlan_etype >= 0) {
l2->etype = wlan_etype;
} else if (dsa_port >= 0) {
l2->etype = BIT(dsa_port);
l2->etype |= !data->vlan.num ? BIT(15) : 0;
} else if (data->pppoe.num) {
@@ -490,6 +532,10 @@ static void airoha_ppe_foe_flow_stats_update(struct airoha_ppe *ppe,
meter = &hwe->ipv4.l2.meter;
}
pse_port = FIELD_GET(AIROHA_FOE_IB2_PSE_PORT, *ib2);
if (pse_port == FE_PSE_PORT_CDM4)
return;
airoha_ppe_foe_flow_stat_entry_reset(ppe, npu, index);
val = FIELD_GET(AIROHA_FOE_CHANNEL | AIROHA_FOE_QID, *data);
@@ -500,7 +546,6 @@ static void airoha_ppe_foe_flow_stats_update(struct airoha_ppe *ppe,
AIROHA_FOE_IB2_PSE_QOS | AIROHA_FOE_IB2_FAST_PATH);
*meter |= FIELD_PREP(AIROHA_FOE_TUNNEL_MTU, val);
pse_port = FIELD_GET(AIROHA_FOE_IB2_PSE_PORT, *ib2);
nbq = pse_port == 1 ? 6 : 5;
*ib2 &= ~(AIROHA_FOE_IB2_NBQ | AIROHA_FOE_IB2_PSE_PORT |
AIROHA_FOE_IB2_PSE_QOS);