Merge branch 'mlxsw-add-port-range-matching-support'

Petr Machata says: ==================== mlxsw: Add port range matching support Ido Schimmel writes: Add port range matching support in mlxsw as part of tc-flower offload. Patches #1-#7 gradually add port range matching support in mlxsw. See patch #3 to understand how port range matching is implemented in the device. Patches #8-#10 add selftests. ==================== Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Jakub Kicinski <[email protected]>
bluez · Jul 12, 2023 · fa3530b · fa3530b
2 parents 9f4a7c9 + 209218e
commit fa3530b
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Showing 20 changed files with 876 additions and 7 deletions.
diff --git a/drivers/net/ethernet/mellanox/mlxsw/Makefile b/drivers/net/ethernet/mellanox/mlxsw/Makefile
@@ -29,7 +29,7 @@ mlxsw_spectrum-objs		:= spectrum.o spectrum_buffers.o \
 				   spectrum_nve.o spectrum_nve_vxlan.o \
 				   spectrum_dpipe.o spectrum_trap.o \
 				   spectrum_ethtool.o spectrum_policer.o \
-				   spectrum_pgt.o
+				   spectrum_pgt.o spectrum_port_range.o
 mlxsw_spectrum-$(CONFIG_MLXSW_SPECTRUM_DCB)	+= spectrum_dcb.o
 mlxsw_spectrum-$(CONFIG_PTP_1588_CLOCK)		+= spectrum_ptp.o
 obj-$(CONFIG_MLXSW_MINIMAL)	+= mlxsw_minimal.o

diff --git a/drivers/net/ethernet/mellanox/mlxsw/core_acl_flex_keys.c b/drivers/net/ethernet/mellanox/mlxsw/core_acl_flex_keys.c
@@ -43,6 +43,7 @@ static const struct mlxsw_afk_element_info mlxsw_afk_element_infos[] = {
 	MLXSW_AFK_ELEMENT_INFO_BUF(DST_IP_32_63, 0x38, 4),
 	MLXSW_AFK_ELEMENT_INFO_BUF(DST_IP_0_31, 0x3C, 4),
 	MLXSW_AFK_ELEMENT_INFO_U32(FDB_MISS, 0x40, 0, 1),
+	MLXSW_AFK_ELEMENT_INFO_U32(L4_PORT_RANGE, 0x40, 1, 16),
 };
 
 struct mlxsw_afk {

diff --git a/drivers/net/ethernet/mellanox/mlxsw/core_acl_flex_keys.h b/drivers/net/ethernet/mellanox/mlxsw/core_acl_flex_keys.h
@@ -36,6 +36,7 @@ enum mlxsw_afk_element {
 	MLXSW_AFK_ELEMENT_VIRT_ROUTER_MSB,
 	MLXSW_AFK_ELEMENT_VIRT_ROUTER_LSB,
 	MLXSW_AFK_ELEMENT_FDB_MISS,
+	MLXSW_AFK_ELEMENT_L4_PORT_RANGE,
 	MLXSW_AFK_ELEMENT_MAX,
 };
 

diff --git a/drivers/net/ethernet/mellanox/mlxsw/reg.h b/drivers/net/ethernet/mellanox/mlxsw/reg.h
@@ -2799,6 +2799,78 @@ static inline void mlxsw_reg_ptar_unpack(char *payload, char *tcam_region_info)
 	mlxsw_reg_ptar_tcam_region_info_memcpy_from(payload, tcam_region_info);
 }
 
+/* PPRR - Policy-Engine Port Range Register
+ * ----------------------------------------
+ * This register is used for configuring port range identification.
+ */
+#define MLXSW_REG_PPRR_ID 0x3008
+#define MLXSW_REG_PPRR_LEN 0x14
+
+MLXSW_REG_DEFINE(pprr, MLXSW_REG_PPRR_ID, MLXSW_REG_PPRR_LEN);
+
+/* reg_pprr_ipv4
+ * Apply port range register to IPv4 packets.
+ * Access: RW
+ */
+MLXSW_ITEM32(reg, pprr, ipv4, 0x00, 31, 1);
+
+/* reg_pprr_ipv6
+ * Apply port range register to IPv6 packets.
+ * Access: RW
+ */
+MLXSW_ITEM32(reg, pprr, ipv6, 0x00, 30, 1);
+
+/* reg_pprr_src
+ * Apply port range register to source L4 ports.
+ * Access: RW
+ */
+MLXSW_ITEM32(reg, pprr, src, 0x00, 29, 1);
+
+/* reg_pprr_dst
+ * Apply port range register to destination L4 ports.
+ * Access: RW
+ */
+MLXSW_ITEM32(reg, pprr, dst, 0x00, 28, 1);
+
+/* reg_pprr_tcp
+ * Apply port range register to TCP packets.
+ * Access: RW
+ */
+MLXSW_ITEM32(reg, pprr, tcp, 0x00, 27, 1);
+
+/* reg_pprr_udp
+ * Apply port range register to UDP packets.
+ * Access: RW
+ */
+MLXSW_ITEM32(reg, pprr, udp, 0x00, 26, 1);
+
+/* reg_pprr_register_index
+ * Index of Port Range Register being accessed.
+ * Range is 0..cap_max_acl_l4_port_range-1.
+ * Access: Index
+ */
+MLXSW_ITEM32(reg, pprr, register_index, 0x00, 0, 8);
+
+/* reg_prrr_port_range_min
+ * Minimum port range for comparison.
+ * Match is defined as:
+ * port_range_min <= packet_port <= port_range_max.
+ * Access: RW
+ */
+MLXSW_ITEM32(reg, pprr, port_range_min, 0x04, 16, 16);
+
+/* reg_prrr_port_range_max
+ * Maximum port range for comparison.
+ * Access: RW
+ */
+MLXSW_ITEM32(reg, pprr, port_range_max, 0x04, 0, 16);
+
+static inline void mlxsw_reg_pprr_pack(char *payload, u8 register_index)
+{
+	MLXSW_REG_ZERO(pprr, payload);
+	mlxsw_reg_pprr_register_index_set(payload, register_index);
+}
+
 /* PPBS - Policy-Engine Policy Based Switching Register
  * ----------------------------------------------------
  * This register retrieves and sets Policy Based Switching Table entries.
@@ -12819,6 +12891,7 @@ static const struct mlxsw_reg_info *mlxsw_reg_infos[] = {
 	MLXSW_REG(pacl),
 	MLXSW_REG(pagt),
 	MLXSW_REG(ptar),
+	MLXSW_REG(pprr),
 	MLXSW_REG(ppbs),
 	MLXSW_REG(prcr),
 	MLXSW_REG(pefa),

diff --git a/drivers/net/ethernet/mellanox/mlxsw/resources.h b/drivers/net/ethernet/mellanox/mlxsw/resources.h
@@ -39,6 +39,7 @@ enum mlxsw_res_id {
 	MLXSW_RES_ID_ACL_FLEX_KEYS,
 	MLXSW_RES_ID_ACL_MAX_ACTION_PER_RULE,
 	MLXSW_RES_ID_ACL_ACTIONS_PER_SET,
+	MLXSW_RES_ID_ACL_MAX_L4_PORT_RANGE,
 	MLXSW_RES_ID_ACL_MAX_ERPT_BANKS,
 	MLXSW_RES_ID_ACL_MAX_ERPT_BANK_SIZE,
 	MLXSW_RES_ID_ACL_MAX_LARGE_KEY_ID,
@@ -99,6 +100,7 @@ static u16 mlxsw_res_ids[] = {
 	[MLXSW_RES_ID_ACL_FLEX_KEYS] = 0x2910,
 	[MLXSW_RES_ID_ACL_MAX_ACTION_PER_RULE] = 0x2911,
 	[MLXSW_RES_ID_ACL_ACTIONS_PER_SET] = 0x2912,
+	[MLXSW_RES_ID_ACL_MAX_L4_PORT_RANGE] = 0x2920,
 	[MLXSW_RES_ID_ACL_MAX_ERPT_BANKS] = 0x2940,
 	[MLXSW_RES_ID_ACL_MAX_ERPT_BANK_SIZE] = 0x2941,
 	[MLXSW_RES_ID_ACL_MAX_LARGE_KEY_ID] = 0x2942,

diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c
@@ -3188,6 +3188,12 @@ static int mlxsw_sp_init(struct mlxsw_core *mlxsw_core,
 		goto err_nve_init;
 	}
 
+	err = mlxsw_sp_port_range_init(mlxsw_sp);
+	if (err) {
+		dev_err(mlxsw_sp->bus_info->dev, "Failed to initialize port ranges\n");
+		goto err_port_range_init;
+	}
+
 	err = mlxsw_sp_acl_init(mlxsw_sp);
 	if (err) {
 		dev_err(mlxsw_sp->bus_info->dev, "Failed to initialize ACL\n");
@@ -3280,6 +3286,8 @@ static int mlxsw_sp_init(struct mlxsw_core *mlxsw_core,
 err_router_init:
 	mlxsw_sp_acl_fini(mlxsw_sp);
 err_acl_init:
+	mlxsw_sp_port_range_fini(mlxsw_sp);
+err_port_range_init:
 	mlxsw_sp_nve_fini(mlxsw_sp);
 err_nve_init:
 	mlxsw_sp_ipv6_addr_ht_fini(mlxsw_sp);
@@ -3462,6 +3470,7 @@ static void mlxsw_sp_fini(struct mlxsw_core *mlxsw_core)
 	}
 	mlxsw_sp_router_fini(mlxsw_sp);
 	mlxsw_sp_acl_fini(mlxsw_sp);
+	mlxsw_sp_port_range_fini(mlxsw_sp);
 	mlxsw_sp_nve_fini(mlxsw_sp);
 	mlxsw_sp_ipv6_addr_ht_fini(mlxsw_sp);
 	mlxsw_sp_afa_fini(mlxsw_sp);
@@ -3730,6 +3739,26 @@ static int mlxsw_sp_resources_rifs_register(struct mlxsw_core *mlxsw_core)
 				      &size_params);
 }
 
+static int
+mlxsw_sp_resources_port_range_register(struct mlxsw_core *mlxsw_core)
+{
+	struct devlink *devlink = priv_to_devlink(mlxsw_core);
+	struct devlink_resource_size_params size_params;
+	u64 max;
+
+	if (!MLXSW_CORE_RES_VALID(mlxsw_core, ACL_MAX_L4_PORT_RANGE))
+		return -EIO;
+
+	max = MLXSW_CORE_RES_GET(mlxsw_core, ACL_MAX_L4_PORT_RANGE);
+	devlink_resource_size_params_init(&size_params, max, max, 1,
+					  DEVLINK_RESOURCE_UNIT_ENTRY);
+
+	return devl_resource_register(devlink, "port_range_registers", max,
+				      MLXSW_SP_RESOURCE_PORT_RANGE_REGISTERS,
+				      DEVLINK_RESOURCE_ID_PARENT_TOP,
+				      &size_params);
+}
+
 static int mlxsw_sp1_resources_register(struct mlxsw_core *mlxsw_core)
 {
 	int err;
@@ -3758,8 +3787,13 @@ static int mlxsw_sp1_resources_register(struct mlxsw_core *mlxsw_core)
 	if (err)
 		goto err_resources_rifs_register;
 
+	err = mlxsw_sp_resources_port_range_register(mlxsw_core);
+	if (err)
+		goto err_resources_port_range_register;
+
 	return 0;
 
+err_resources_port_range_register:
 err_resources_rifs_register:
 err_resources_rif_mac_profile_register:
 err_policer_resources_register:
@@ -3797,8 +3831,13 @@ static int mlxsw_sp2_resources_register(struct mlxsw_core *mlxsw_core)
 	if (err)
 		goto err_resources_rifs_register;
 
+	err = mlxsw_sp_resources_port_range_register(mlxsw_core);
+	if (err)
+		goto err_resources_port_range_register;
+
 	return 0;
 
+err_resources_port_range_register:
 err_resources_rifs_register:
 err_resources_rif_mac_profile_register:
 err_policer_resources_register:

diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum.h b/drivers/net/ethernet/mellanox/mlxsw/spectrum.h
@@ -69,6 +69,7 @@ enum mlxsw_sp_resource_id {
 	MLXSW_SP_RESOURCE_SINGLE_RATE_POLICERS,
 	MLXSW_SP_RESOURCE_RIF_MAC_PROFILES,
 	MLXSW_SP_RESOURCE_RIFS,
+	MLXSW_SP_RESOURCE_PORT_RANGE_REGISTERS,
 };
 
 struct mlxsw_sp_port;
@@ -175,6 +176,7 @@ struct mlxsw_sp {
 	struct mlxsw_sp_acl *acl;
 	struct mlxsw_sp_fid_core *fid_core;
 	struct mlxsw_sp_policer_core *policer_core;
+	struct mlxsw_sp_port_range_core *pr_core;
 	struct mlxsw_sp_kvdl *kvdl;
 	struct mlxsw_sp_nve *nve;
 	struct notifier_block netdevice_nb;
@@ -865,9 +867,13 @@ struct mlxsw_sp_acl_rule_info {
 	   egress_bind_blocker:1,
 	   counter_valid:1,
 	   policer_index_valid:1,
-	   ipv6_valid:1;
+	   ipv6_valid:1,
+	   src_port_range_reg_valid:1,
+	   dst_port_range_reg_valid:1;
 	unsigned int counter_index;
 	u16 policer_index;
+	u8 src_port_range_reg_index;
+	u8 dst_port_range_reg_index;
 	struct {
 		u32 prev_val;
 		enum mlxsw_sp_acl_mangle_field prev_field;
@@ -992,7 +998,8 @@ void mlxsw_sp_acl_ruleset_prio_get(struct mlxsw_sp_acl_ruleset *ruleset,
 struct mlxsw_sp_acl_rule_info *
 mlxsw_sp_acl_rulei_create(struct mlxsw_sp_acl *acl,
 			  struct mlxsw_afa_block *afa_block);
-void mlxsw_sp_acl_rulei_destroy(struct mlxsw_sp_acl_rule_info *rulei);
+void mlxsw_sp_acl_rulei_destroy(struct mlxsw_sp *mlxsw_sp,
+				struct mlxsw_sp_acl_rule_info *rulei);
 int mlxsw_sp_acl_rulei_commit(struct mlxsw_sp_acl_rule_info *rulei);
 void mlxsw_sp_acl_rulei_priority(struct mlxsw_sp_acl_rule_info *rulei,
 				 unsigned int priority);
@@ -1484,4 +1491,18 @@ int mlxsw_sp_pgt_entry_port_set(struct mlxsw_sp *mlxsw_sp, u16 mid,
 int mlxsw_sp_pgt_init(struct mlxsw_sp *mlxsw_sp);
 void mlxsw_sp_pgt_fini(struct mlxsw_sp *mlxsw_sp);
 
+/* spectrum_port_range.c */
+struct mlxsw_sp_port_range {
+	u16 min;
+	u16 max;
+	u8 source:1;	/* Source or destination */
+};
+
+int mlxsw_sp_port_range_reg_get(struct mlxsw_sp *mlxsw_sp,
+				const struct mlxsw_sp_port_range *range,
+				struct netlink_ext_ack *extack,
+				u8 *p_prr_index);
+void mlxsw_sp_port_range_reg_put(struct mlxsw_sp *mlxsw_sp, u8 prr_index);
+int mlxsw_sp_port_range_init(struct mlxsw_sp *mlxsw_sp);
+void mlxsw_sp_port_range_fini(struct mlxsw_sp *mlxsw_sp);
 #endif
diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum1_acl_tcam.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum1_acl_tcam.c
@@ -90,7 +90,7 @@ mlxsw_sp1_acl_ctcam_region_catchall_add(struct mlxsw_sp *mlxsw_sp,
 err_entry_add:
 err_rulei_commit:
 err_rulei_act_continue:
-	mlxsw_sp_acl_rulei_destroy(rulei);
+	mlxsw_sp_acl_rulei_destroy(mlxsw_sp, rulei);
 err_rulei_create:
 	mlxsw_sp_acl_ctcam_chunk_fini(&region->catchall.cchunk);
 	return err;
@@ -105,7 +105,7 @@ mlxsw_sp1_acl_ctcam_region_catchall_del(struct mlxsw_sp *mlxsw_sp,
 	mlxsw_sp_acl_ctcam_entry_del(mlxsw_sp, &region->cregion,
 				     &region->catchall.cchunk,
 				     &region->catchall.centry);
-	mlxsw_sp_acl_rulei_destroy(rulei);
+	mlxsw_sp_acl_rulei_destroy(mlxsw_sp, rulei);
 	mlxsw_sp_acl_ctcam_chunk_fini(&region->catchall.cchunk);
 }
 

diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_acl.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum_acl.c
@@ -339,10 +339,17 @@ mlxsw_sp_acl_rulei_create(struct mlxsw_sp_acl *acl,
 	return ERR_PTR(err);
 }
 
-void mlxsw_sp_acl_rulei_destroy(struct mlxsw_sp_acl_rule_info *rulei)
+void mlxsw_sp_acl_rulei_destroy(struct mlxsw_sp *mlxsw_sp,
+				struct mlxsw_sp_acl_rule_info *rulei)
 {
 	if (rulei->action_created)
 		mlxsw_afa_block_destroy(rulei->act_block);
+	if (rulei->src_port_range_reg_valid)
+		mlxsw_sp_port_range_reg_put(mlxsw_sp,
+					    rulei->src_port_range_reg_index);
+	if (rulei->dst_port_range_reg_valid)
+		mlxsw_sp_port_range_reg_put(mlxsw_sp,
+					    rulei->dst_port_range_reg_index);
 	kfree(rulei);
 }
 
@@ -834,7 +841,7 @@ void mlxsw_sp_acl_rule_destroy(struct mlxsw_sp *mlxsw_sp,
 {
 	struct mlxsw_sp_acl_ruleset *ruleset = rule->ruleset;
 
-	mlxsw_sp_acl_rulei_destroy(rule->rulei);
+	mlxsw_sp_acl_rulei_destroy(mlxsw_sp, rule->rulei);
 	kfree(rule);
 	mlxsw_sp_acl_ruleset_ref_dec(mlxsw_sp, ruleset);
 }

diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_acl_flex_keys.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum_acl_flex_keys.c
@@ -31,12 +31,14 @@ static struct mlxsw_afk_element_inst mlxsw_sp_afk_element_info_l2_smac_ex[] = {
 
 static struct mlxsw_afk_element_inst mlxsw_sp_afk_element_info_ipv4_sip[] = {
 	MLXSW_AFK_ELEMENT_INST_BUF(SRC_IP_0_31, 0x00, 4),
+	MLXSW_AFK_ELEMENT_INST_U32(L4_PORT_RANGE, 0x04, 16, 16),
 	MLXSW_AFK_ELEMENT_INST_U32(IP_PROTO, 0x08, 0, 8),
 	MLXSW_AFK_ELEMENT_INST_U32(SRC_SYS_PORT, 0x0C, 0, 16),
 };
 
 static struct mlxsw_afk_element_inst mlxsw_sp_afk_element_info_ipv4_dip[] = {
 	MLXSW_AFK_ELEMENT_INST_BUF(DST_IP_0_31, 0x00, 4),
+	MLXSW_AFK_ELEMENT_INST_U32(L4_PORT_RANGE, 0x04, 16, 16),
 	MLXSW_AFK_ELEMENT_INST_U32(IP_PROTO, 0x08, 0, 8),
 	MLXSW_AFK_ELEMENT_INST_U32(SRC_SYS_PORT, 0x0C, 0, 16),
 };
@@ -205,6 +207,7 @@ static struct mlxsw_afk_element_inst mlxsw_sp_afk_element_info_l4_0[] = {
 
 static struct mlxsw_afk_element_inst mlxsw_sp_afk_element_info_l4_2[] = {
 	MLXSW_AFK_ELEMENT_INST_U32(TCP_FLAGS, 0x04, 16, 9), /* TCP_CONTROL + TCP_ECN */
+	MLXSW_AFK_ELEMENT_INST_U32(L4_PORT_RANGE, 0x04, 0, 16),
 };
 
 static const struct mlxsw_afk_block mlxsw_sp2_afk_blocks[] = {