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Message-Id: <20250319-am65-cpsw-rx-class-v1-6-2bfded07490e@kernel.org>
Date: Wed, 19 Mar 2025 15:38:32 +0200
From: Roger Quadros <rogerq@...nel.org>
To: Siddharth Vadapalli <s-vadapalli@...com>,
Andrew Lunn <andrew+netdev@...n.ch>,
"David S. Miller" <davem@...emloft.net>, Eric Dumazet <edumazet@...gle.com>,
Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>,
Russell King <linux@...linux.org.uk>, danishanwar@...com
Cc: srk@...com, linux-omap@...r.kernel.org, netdev@...r.kernel.org,
linux-kernel@...r.kernel.org, Roger Quadros <rogerq@...nel.org>
Subject: [PATCH net-next 6/9] net: ethernet: ti: cpsw_ale: add
cpsw_ale_policer_set/clr_entry()
Add cpsw_ale_policer_set/clr_entry() helpers.
So far Raw Ethernet matching based on Source/Destination address
and VLAN Priority (PCP) is supported.
Signed-off-by: Roger Quadros <rogerq@...nel.org>
---
drivers/net/ethernet/ti/cpsw_ale.c | 84 ++++++++++++++++++++++++++++++++++++++
drivers/net/ethernet/ti/cpsw_ale.h | 28 +++++++++++++
2 files changed, 112 insertions(+)
diff --git a/drivers/net/ethernet/ti/cpsw_ale.c b/drivers/net/ethernet/ti/cpsw_ale.c
index 630e3a555190..f5ca18d4ea6a 100644
--- a/drivers/net/ethernet/ti/cpsw_ale.c
+++ b/drivers/net/ethernet/ti/cpsw_ale.c
@@ -1746,3 +1746,87 @@ void cpsw_ale_classifier_setup_default(struct cpsw_ale *ale, int num_rx_ch)
1);
}
}
+
+#define HOST_PORT_NUM 0
+
+/* Clear Policer and associated ALE table entries */
+void cpsw_ale_policer_clr_entry(struct cpsw_ale *ale, u32 policer_idx,
+ struct cpsw_ale_policer_cfg *cfg)
+{
+ cpsw_ale_policer_reset_entry(ale, policer_idx);
+
+ /* We do not delete ALE entries that were added in set_entry
+ * as they might still be in use by the port e.g. VLAN id
+ * or port MAC address
+ */
+
+ /* clear BLOCKED in case we set it */
+ if ((cfg->match_flags & CPSW_ALE_POLICER_MATCH_MACSRC) && cfg->drop)
+ cpsw_ale_add_ucast(ale, cfg->src_addr, HOST_PORT_NUM, 0, 0);
+
+ if ((cfg->match_flags & CPSW_ALE_POLICER_MATCH_MACDST) && cfg->drop)
+ cpsw_ale_add_ucast(ale, cfg->dst_addr, HOST_PORT_NUM, 0, 0);
+}
+
+int cpsw_ale_policer_set_entry(struct cpsw_ale *ale, u32 policer_idx,
+ struct cpsw_ale_policer_cfg *cfg)
+{
+ int ale_idx;
+ u16 ale_flags = cfg->drop ? ALE_BLOCKED : 0;
+
+ /* A single policer can support multiple match types simultaneously
+ * There can be only one ALE entry per address
+ */
+ cpsw_ale_policer_reset_entry(ale, policer_idx);
+ cpsw_ale_policer_read_idx(ale, policer_idx);
+
+ if (cfg->match_flags & CPSW_ALE_POLICER_MATCH_MACSRC) {
+ ale_idx = cpsw_ale_add_ucast(ale, cfg->src_addr, HOST_PORT_NUM, ale_flags, 0);
+ if (ale_idx < 0)
+ return -ENOENT;
+
+ /* update policer entry */
+ regmap_field_write(ale->fields[POL_SRC_INDEX], ale_idx);
+ regmap_field_write(ale->fields[POL_SRC_MEN], 1);
+ }
+
+ if (cfg->match_flags & CPSW_ALE_POLICER_MATCH_MACDST) {
+ ale_idx = cpsw_ale_add_ucast(ale, cfg->dst_addr, HOST_PORT_NUM, ale_flags, 0);
+ if (ale_idx < 0)
+ return -ENOENT;
+
+ /* update policer entry */
+ regmap_field_write(ale->fields[POL_DST_INDEX], ale_idx);
+ regmap_field_write(ale->fields[POL_DST_MEN], 1);
+ }
+
+ if (cfg->match_flags & CPSW_ALE_POLICER_MATCH_OVLAN) {
+/* FIXME: VLAN ID based flow routing not yet working, Only PCP matching for now
+ * u32 port_mask, unreg_mcast = 0;
+ *
+ * port_mask = BIT(cfg->port_id) | ALE_PORT_HOST;
+ * if (!cfg->vid)
+ * unreg_mcast = port_mask;
+ * ale_idx = cpsw_ale_vlan_add_modify(ale, cfg->vid, port_mask,
+ * unreg_mcast, port_mask, 0);
+ * if (ale_idx < 0)
+ * return -ENOENT;
+ *
+ * regmap_field_write(ale->fields[POL_OVLAN_INDEX], ale_idx);
+ * regmap_field_write(ale->fields[POL_OVLAN_MEN], 1);
+ */
+
+ regmap_field_write(ale->fields[POL_PRI_VAL], cfg->vlan_prio);
+ regmap_field_write(ale->fields[POL_PRI_MEN], 1);
+ }
+
+ cpsw_ale_policer_write_idx(ale, policer_idx);
+
+ /* Map to thread id provided by the config */
+ if (!cfg->drop) {
+ cpsw_ale_policer_thread_idx_enable(ale, policer_idx,
+ cfg->thread_id, true);
+ }
+
+ return 0;
+}
diff --git a/drivers/net/ethernet/ti/cpsw_ale.h b/drivers/net/ethernet/ti/cpsw_ale.h
index ce59fec75774..11d333bf5a52 100644
--- a/drivers/net/ethernet/ti/cpsw_ale.h
+++ b/drivers/net/ethernet/ti/cpsw_ale.h
@@ -159,6 +159,30 @@ enum cpsw_ale_port_state {
/* Policer */
#define CPSW_ALE_POLICER_ENTRY_WORDS 8
+/* Policer match flags */
+#define CPSW_ALE_POLICER_MATCH_PORT BIT(0)
+#define CPSW_ALE_POLICER_MATCH_PRI BIT(1)
+#define CPSW_ALE_POLICER_MATCH_OUI BIT(2)
+#define CPSW_ALE_POLICER_MATCH_MACDST BIT(3)
+#define CPSW_ALE_POLICER_MATCH_MACSRC BIT(4)
+#define CPSW_ALE_POLICER_MATCH_OVLAN BIT(5)
+#define CPSW_ALE_POLICER_MATCH_IVLAN BIT(6)
+#define CPSW_ALE_POLICER_MATCH_ETHTYPE BIT(7)
+#define CPSW_ALE_POLICER_MATCH_IPSRC BIT(8)
+#define CPSW_ALE_POLICER_MATCH_IPDST BIT(9)
+
+struct cpsw_ale_policer_cfg {
+ u32 match_flags;
+ u16 ether_type;
+ u16 vid;
+ u8 vlan_prio;
+ u8 src_addr[ETH_ALEN];
+ u8 dst_addr[ETH_ALEN];
+ bool drop;
+ u64 thread_id;
+ int port_id;
+};
+
struct cpsw_ale *cpsw_ale_create(struct cpsw_ale_params *params);
void cpsw_ale_start(struct cpsw_ale *ale);
@@ -199,5 +223,9 @@ void cpsw_ale_set_unreg_mcast(struct cpsw_ale *ale, int unreg_mcast_mask,
bool add);
void cpsw_ale_classifier_setup_default(struct cpsw_ale *ale, int num_rx_ch);
void cpsw_ale_policer_reset(struct cpsw_ale *ale);
+int cpsw_ale_policer_set_entry(struct cpsw_ale *ale, u32 policer_idx,
+ struct cpsw_ale_policer_cfg *cfg);
+void cpsw_ale_policer_clr_entry(struct cpsw_ale *ale, u32 policer_idx,
+ struct cpsw_ale_policer_cfg *cfg);
#endif
--
2.34.1
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