net: microchip: vcap: Add tc flower keys for lan966x

Add the following TC flower filter keys to lan966x for IS2:
- ipv4_addr (sip and dip)
- ipv6_addr (sip and dip)
- control (IPv4 fragments)
- portnum (tcp and udp port numbers)
- basic (L3 and L4 protocol)
- vlan (outer vlan tag info)
- tcp (tcp flags)
- ip (tos field)

As the parsing of these keys is similar between lan966x and sparx5, move
the code in a separate file to be shared by these 2 chips. And put the
specific parsing outside of the common functions.
Signed-off-by: Horatiu Vultur <horatiu.vultur@microchip.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/microchip/lan966x/lan966x_tc_flower.c

@@ -3,53 +3,135 @@
 #include "lan966x_main.h"
 #include "vcap_api.h"
 #include "vcap_api_client.h"
+#include "vcap_tc.h"
 
-struct lan966x_tc_flower_parse_usage {
-	struct flow_cls_offload *f;
-	struct flow_rule *frule;
-	struct vcap_rule *vrule;
-	unsigned int used_keys;
-	u16 l3_proto;
-};
+static bool lan966x_tc_is_known_etype(u16 etype)
+{
+	switch (etype) {
+	case ETH_P_ALL:
+	case ETH_P_ARP:
+	case ETH_P_IP:
+	case ETH_P_IPV6:
+		return true;
+	}
 
-static int lan966x_tc_flower_handler_ethaddr_usage(struct lan966x_tc_flower_parse_usage *st)
+	return false;
+}
+
+static int
+lan966x_tc_flower_handler_control_usage(struct vcap_tc_flower_parse_usage *st)
 {
-	enum vcap_key_field smac_key = VCAP_KF_L2_SMAC;
-	enum vcap_key_field dmac_key = VCAP_KF_L2_DMAC;
-	struct flow_match_eth_addrs match;
-	struct vcap_u48_key smac, dmac;
+	struct flow_match_control match;
 	int err = 0;
 
-	flow_rule_match_eth_addrs(st->frule, &match);
-
-	if (!is_zero_ether_addr(match.mask->src)) {
-		vcap_netbytes_copy(smac.value, match.key->src, ETH_ALEN);
-		vcap_netbytes_copy(smac.mask, match.mask->src, ETH_ALEN);
-		err = vcap_rule_add_key_u48(st->vrule, smac_key, &smac);
+	flow_rule_match_control(st->frule, &match);
+	if (match.mask->flags & FLOW_DIS_IS_FRAGMENT) {
+		if (match.key->flags & FLOW_DIS_IS_FRAGMENT)
+			err = vcap_rule_add_key_bit(st->vrule,
+						    VCAP_KF_L3_FRAGMENT,
+						    VCAP_BIT_1);
+		else
+			err = vcap_rule_add_key_bit(st->vrule,
+						    VCAP_KF_L3_FRAGMENT,
+						    VCAP_BIT_0);
 		if (err)
 			goto out;
 	}
 
-	if (!is_zero_ether_addr(match.mask->dst)) {
-		vcap_netbytes_copy(dmac.value, match.key->dst, ETH_ALEN);
-		vcap_netbytes_copy(dmac.mask, match.mask->dst, ETH_ALEN);
-		err = vcap_rule_add_key_u48(st->vrule, dmac_key, &dmac);
+	if (match.mask->flags & FLOW_DIS_FIRST_FRAG) {
+		if (match.key->flags & FLOW_DIS_FIRST_FRAG)
+			err = vcap_rule_add_key_bit(st->vrule,
+						    VCAP_KF_L3_FRAG_OFS_GT0,
+						    VCAP_BIT_0);
+		else
+			err = vcap_rule_add_key_bit(st->vrule,
+						    VCAP_KF_L3_FRAG_OFS_GT0,
+						    VCAP_BIT_1);
 		if (err)
 			goto out;
 	}
 
-	st->used_keys |= BIT(FLOW_DISSECTOR_KEY_ETH_ADDRS);
+	st->used_keys |= BIT(FLOW_DISSECTOR_KEY_CONTROL);
 
 	return err;
 
 out:
-	NL_SET_ERR_MSG_MOD(st->f->common.extack, "eth_addr parse error");
+	NL_SET_ERR_MSG_MOD(st->fco->common.extack, "ip_frag parse error");
+	return err;
+}
+
+static int
+lan966x_tc_flower_handler_basic_usage(struct vcap_tc_flower_parse_usage *st)
+{
+	struct flow_match_basic match;
+	int err = 0;
+
+	flow_rule_match_basic(st->frule, &match);
+	if (match.mask->n_proto) {
+		st->l3_proto = be16_to_cpu(match.key->n_proto);
+		if (!lan966x_tc_is_known_etype(st->l3_proto)) {
+			err = vcap_rule_add_key_u32(st->vrule, VCAP_KF_ETYPE,
+						    st->l3_proto, ~0);
+			if (err)
+				goto out;
+		} else if (st->l3_proto == ETH_P_IP) {
+			err = vcap_rule_add_key_bit(st->vrule, VCAP_KF_IP4_IS,
+						    VCAP_BIT_1);
+			if (err)
+				goto out;
+		}
+	}
+	if (match.mask->ip_proto) {
+		st->l4_proto = match.key->ip_proto;
+
+		if (st->l4_proto == IPPROTO_TCP) {
+			err = vcap_rule_add_key_bit(st->vrule,
+						    VCAP_KF_TCP_IS,
+						    VCAP_BIT_1);
+			if (err)
+				goto out;
+		} else if (st->l4_proto == IPPROTO_UDP) {
+			err = vcap_rule_add_key_bit(st->vrule,
+						    VCAP_KF_TCP_IS,
+						    VCAP_BIT_0);
+			if (err)
+				goto out;
+		} else {
+			err = vcap_rule_add_key_u32(st->vrule,
+						    VCAP_KF_L3_IP_PROTO,
+						    st->l4_proto, ~0);
+			if (err)
+				goto out;
+		}
+	}
+
+	st->used_keys |= BIT(FLOW_DISSECTOR_KEY_BASIC);
+	return err;
+out:
+	NL_SET_ERR_MSG_MOD(st->fco->common.extack, "ip_proto parse error");
 	return err;
 }
 
 static int
-(*lan966x_tc_flower_handlers_usage[])(struct lan966x_tc_flower_parse_usage *st) = {
-	[FLOW_DISSECTOR_KEY_ETH_ADDRS] = lan966x_tc_flower_handler_ethaddr_usage,
+lan966x_tc_flower_handler_vlan_usage(struct vcap_tc_flower_parse_usage *st)
+{
+	return vcap_tc_flower_handler_vlan_usage(st,
+						 VCAP_KF_8021Q_VID_CLS,
+						 VCAP_KF_8021Q_PCP_CLS);
+}
+
+static int
+(*lan966x_tc_flower_handlers_usage[])(struct vcap_tc_flower_parse_usage *st) = {
+	[FLOW_DISSECTOR_KEY_ETH_ADDRS] = vcap_tc_flower_handler_ethaddr_usage,
+	[FLOW_DISSECTOR_KEY_IPV4_ADDRS] = vcap_tc_flower_handler_ipv4_usage,
+	[FLOW_DISSECTOR_KEY_IPV6_ADDRS] = vcap_tc_flower_handler_ipv6_usage,
+	[FLOW_DISSECTOR_KEY_CONTROL] = lan966x_tc_flower_handler_control_usage,
+	[FLOW_DISSECTOR_KEY_PORTS] = vcap_tc_flower_handler_portnum_usage,
+	[FLOW_DISSECTOR_KEY_BASIC] = lan966x_tc_flower_handler_basic_usage,
+	[FLOW_DISSECTOR_KEY_VLAN] = lan966x_tc_flower_handler_vlan_usage,
+	[FLOW_DISSECTOR_KEY_TCP] = vcap_tc_flower_handler_tcp_usage,
+	[FLOW_DISSECTOR_KEY_ARP] = vcap_tc_flower_handler_arp_usage,
+	[FLOW_DISSECTOR_KEY_IP] = vcap_tc_flower_handler_ip_usage,
 };
 
 static int lan966x_tc_flower_use_dissectors(struct flow_cls_offload *f,
@@ -57,8 +139,8 @@ static int lan966x_tc_flower_use_dissectors(struct flow_cls_offload *f,
 					    struct vcap_rule *vrule,
 					    u16 *l3_proto)
 {
-	struct lan966x_tc_flower_parse_usage state = {
-		.f = f,
+	struct vcap_tc_flower_parse_usage state = {
+		.fco = f,
 		.vrule = vrule,
 		.l3_proto = ETH_P_ALL,
 	};

drivers/net/ethernet/microchip/vcap/Makefile

@@ -7,4 +7,4 @@ obj-$(CONFIG_VCAP) += vcap.o
 obj-$(CONFIG_VCAP_KUNIT_TEST) +=  vcap_model_kunit.o
 vcap-$(CONFIG_DEBUG_FS) += vcap_api_debugfs.o
 
-vcap-y += vcap_api.o
+vcap-y += vcap_api.o vcap_tc.o

drivers/net/ethernet/microchip/vcap/vcap_tc.c

+// SPDX-License-Identifier: GPL-2.0+
+/* Microchip VCAP TC
+ *
+ * Copyright (c) 2023 Microchip Technology Inc. and its subsidiaries.
+ */
+
+#include <net/flow_offload.h>
+#include <net/ipv6.h>
+#include <net/tcp.h>
+
+#include "vcap_api_client.h"
+#include "vcap_tc.h"
+
+enum vcap_is2_arp_opcode {
+	VCAP_IS2_ARP_REQUEST,
+	VCAP_IS2_ARP_REPLY,
+	VCAP_IS2_RARP_REQUEST,
+	VCAP_IS2_RARP_REPLY,
+};
+
+enum vcap_arp_opcode {
+	VCAP_ARP_OP_RESERVED,
+	VCAP_ARP_OP_REQUEST,
+	VCAP_ARP_OP_REPLY,
+};
+
+int vcap_tc_flower_handler_ethaddr_usage(struct vcap_tc_flower_parse_usage *st)
+{
+	enum vcap_key_field smac_key = VCAP_KF_L2_SMAC;
+	enum vcap_key_field dmac_key = VCAP_KF_L2_DMAC;
+	struct flow_match_eth_addrs match;
+	struct vcap_u48_key smac, dmac;
+	int err = 0;
+
+	flow_rule_match_eth_addrs(st->frule, &match);
+
+	if (!is_zero_ether_addr(match.mask->src)) {
+		vcap_netbytes_copy(smac.value, match.key->src, ETH_ALEN);
+		vcap_netbytes_copy(smac.mask, match.mask->src, ETH_ALEN);
+		err = vcap_rule_add_key_u48(st->vrule, smac_key, &smac);
+		if (err)
+			goto out;
+	}
+
+	if (!is_zero_ether_addr(match.mask->dst)) {
+		vcap_netbytes_copy(dmac.value, match.key->dst, ETH_ALEN);
+		vcap_netbytes_copy(dmac.mask, match.mask->dst, ETH_ALEN);
+		err = vcap_rule_add_key_u48(st->vrule, dmac_key, &dmac);
+		if (err)
+			goto out;
+	}
+
+	st->used_keys |= BIT(FLOW_DISSECTOR_KEY_ETH_ADDRS);
+
+	return err;
+
+out:
+	NL_SET_ERR_MSG_MOD(st->fco->common.extack, "eth_addr parse error");
+	return err;
+}
+EXPORT_SYMBOL_GPL(vcap_tc_flower_handler_ethaddr_usage);
+
+int vcap_tc_flower_handler_ipv4_usage(struct vcap_tc_flower_parse_usage *st)
+{
+	int err = 0;
+
+	if (st->l3_proto == ETH_P_IP) {
+		struct flow_match_ipv4_addrs mt;
+
+		flow_rule_match_ipv4_addrs(st->frule, &mt);
+		if (mt.mask->src) {
+			err = vcap_rule_add_key_u32(st->vrule,
+						    VCAP_KF_L3_IP4_SIP,
+						    be32_to_cpu(mt.key->src),
+						    be32_to_cpu(mt.mask->src));
+			if (err)
+				goto out;
+		}
+		if (mt.mask->dst) {
+			err = vcap_rule_add_key_u32(st->vrule,
+						    VCAP_KF_L3_IP4_DIP,
+						    be32_to_cpu(mt.key->dst),
+						    be32_to_cpu(mt.mask->dst));
+			if (err)
+				goto out;
+		}
+	}
+
+	st->used_keys |= BIT(FLOW_DISSECTOR_KEY_IPV4_ADDRS);
+
+	return err;
+
+out:
+	NL_SET_ERR_MSG_MOD(st->fco->common.extack, "ipv4_addr parse error");
+	return err;
+}
+EXPORT_SYMBOL_GPL(vcap_tc_flower_handler_ipv4_usage);
+
+int vcap_tc_flower_handler_ipv6_usage(struct vcap_tc_flower_parse_usage *st)
+{
+	int err = 0;
+
+	if (st->l3_proto == ETH_P_IPV6) {
+		struct flow_match_ipv6_addrs mt;
+		struct vcap_u128_key sip;
+		struct vcap_u128_key dip;
+
+		flow_rule_match_ipv6_addrs(st->frule, &mt);
+		/* Check if address masks are non-zero */
+		if (!ipv6_addr_any(&mt.mask->src)) {
+			vcap_netbytes_copy(sip.value, mt.key->src.s6_addr, 16);
+			vcap_netbytes_copy(sip.mask, mt.mask->src.s6_addr, 16);
+			err = vcap_rule_add_key_u128(st->vrule,
+						     VCAP_KF_L3_IP6_SIP, &sip);
+			if (err)
+				goto out;
+		}
+		if (!ipv6_addr_any(&mt.mask->dst)) {
+			vcap_netbytes_copy(dip.value, mt.key->dst.s6_addr, 16);
+			vcap_netbytes_copy(dip.mask, mt.mask->dst.s6_addr, 16);
+			err = vcap_rule_add_key_u128(st->vrule,
+						     VCAP_KF_L3_IP6_DIP, &dip);
+			if (err)
+				goto out;
+		}
+	}
+	st->used_keys |= BIT(FLOW_DISSECTOR_KEY_IPV6_ADDRS);
+	return err;
+out:
+	NL_SET_ERR_MSG_MOD(st->fco->common.extack, "ipv6_addr parse error");
+	return err;
+}
+EXPORT_SYMBOL_GPL(vcap_tc_flower_handler_ipv6_usage);
+
+int vcap_tc_flower_handler_portnum_usage(struct vcap_tc_flower_parse_usage *st)
+{
+	struct flow_match_ports mt;
+	u16 value, mask;
+	int err = 0;
+
+	flow_rule_match_ports(st->frule, &mt);
+
+	if (mt.mask->src) {
+		value = be16_to_cpu(mt.key->src);
+		mask = be16_to_cpu(mt.mask->src);
+		err = vcap_rule_add_key_u32(st->vrule, VCAP_KF_L4_SPORT, value,
+					    mask);
+		if (err)
+			goto out;
+	}
+
+	if (mt.mask->dst) {
+		value = be16_to_cpu(mt.key->dst);
+		mask = be16_to_cpu(mt.mask->dst);
+		err = vcap_rule_add_key_u32(st->vrule, VCAP_KF_L4_DPORT, value,
+					    mask);
+		if (err)
+			goto out;
+	}
+
+	st->used_keys |= BIT(FLOW_DISSECTOR_KEY_PORTS);
+
+	return err;
+
+out:
+	NL_SET_ERR_MSG_MOD(st->fco->common.extack, "port parse error");
+	return err;
+}
+EXPORT_SYMBOL_GPL(vcap_tc_flower_handler_portnum_usage);
+
+int vcap_tc_flower_handler_cvlan_usage(struct vcap_tc_flower_parse_usage *st)
+{
+	enum vcap_key_field vid_key = VCAP_KF_8021Q_VID0;
+	enum vcap_key_field pcp_key = VCAP_KF_8021Q_PCP0;
+	struct flow_match_vlan mt;
+	u16 tpid;
+	int err;
+
+	flow_rule_match_cvlan(st->frule, &mt);
+
+	tpid = be16_to_cpu(mt.key->vlan_tpid);
+
+	if (tpid == ETH_P_8021Q) {
+		vid_key = VCAP_KF_8021Q_VID1;
+		pcp_key = VCAP_KF_8021Q_PCP1;
+	}
+
+	if (mt.mask->vlan_id) {
+		err = vcap_rule_add_key_u32(st->vrule, vid_key,
+					    mt.key->vlan_id,
+					    mt.mask->vlan_id);
+		if (err)
+			goto out;
+	}
+
+	if (mt.mask->vlan_priority) {
+		err = vcap_rule_add_key_u32(st->vrule, pcp_key,
+					    mt.key->vlan_priority,
+					    mt.mask->vlan_priority);
+		if (err)
+			goto out;
+	}
+
+	st->used_keys |= BIT(FLOW_DISSECTOR_KEY_CVLAN);
+
+	return 0;
+out:
+	NL_SET_ERR_MSG_MOD(st->fco->common.extack, "cvlan parse error");
+	return err;
+}
+EXPORT_SYMBOL_GPL(vcap_tc_flower_handler_cvlan_usage);
+
+int vcap_tc_flower_handler_vlan_usage(struct vcap_tc_flower_parse_usage *st,
+				      enum vcap_key_field vid_key,
+				      enum vcap_key_field pcp_key)
+{
+	struct flow_match_vlan mt;
+	int err;
+
+	flow_rule_match_vlan(st->frule, &mt);
+
+	if (mt.mask->vlan_id) {
+		err = vcap_rule_add_key_u32(st->vrule, vid_key,
+					    mt.key->vlan_id,
+					    mt.mask->vlan_id);
+		if (err)
+			goto out;
+	}
+
+	if (mt.mask->vlan_priority) {
+		err = vcap_rule_add_key_u32(st->vrule, pcp_key,
+					    mt.key->vlan_priority,
+					    mt.mask->vlan_priority);
+		if (err)
+			goto out;
+	}
+
+	st->used_keys |= BIT(FLOW_DISSECTOR_KEY_VLAN);
+
+	return 0;
+out:
+	NL_SET_ERR_MSG_MOD(st->fco->common.extack, "vlan parse error");
+	return err;
+}
+EXPORT_SYMBOL_GPL(vcap_tc_flower_handler_vlan_usage);
+
+int vcap_tc_flower_handler_tcp_usage(struct vcap_tc_flower_parse_usage *st)
+{
+	struct flow_match_tcp mt;
+	u16 tcp_flags_mask;
+	u16 tcp_flags_key;
+	enum vcap_bit val;
+	int err = 0;
+
+	flow_rule_match_tcp(st->frule, &mt);
+	tcp_flags_key = be16_to_cpu(mt.key->flags);
+	tcp_flags_mask = be16_to_cpu(mt.mask->flags);
+
+	if (tcp_flags_mask & TCPHDR_FIN) {
+		val = VCAP_BIT_0;
+		if (tcp_flags_key & TCPHDR_FIN)
+			val = VCAP_BIT_1;
+		err = vcap_rule_add_key_bit(st->vrule, VCAP_KF_L4_FIN, val);
+		if (err)
+			goto out;
+	}
+
+	if (tcp_flags_mask & TCPHDR_SYN) {
+		val = VCAP_BIT_0;
+		if (tcp_flags_key & TCPHDR_SYN)
+			val = VCAP_BIT_1;
+		err = vcap_rule_add_key_bit(st->vrule, VCAP_KF_L4_SYN, val);
+		if (err)
+			goto out;
+	}
+
+	if (tcp_flags_mask & TCPHDR_RST) {
+		val = VCAP_BIT_0;
+		if (tcp_flags_key & TCPHDR_RST)
+			val = VCAP_BIT_1;
+		err = vcap_rule_add_key_bit(st->vrule, VCAP_KF_L4_RST, val);
+		if (err)
+			goto out;
+	}
+
+	if (tcp_flags_mask & TCPHDR_PSH) {
+		val = VCAP_BIT_0;
+		if (tcp_flags_key & TCPHDR_PSH)
+			val = VCAP_BIT_1;
+		err = vcap_rule_add_key_bit(st->vrule, VCAP_KF_L4_PSH, val);
+		if (err)
+			goto out;
+	}
+
+	if (tcp_flags_mask & TCPHDR_ACK) {
+		val = VCAP_BIT_0;
+		if (tcp_flags_key & TCPHDR_ACK)
+			val = VCAP_BIT_1;
+		err = vcap_rule_add_key_bit(st->vrule, VCAP_KF_L4_ACK, val);
+		if (err)
+			goto out;
+	}
+
+	if (tcp_flags_mask & TCPHDR_URG) {
+		val = VCAP_BIT_0;
+		if (tcp_flags_key & TCPHDR_URG)
+			val = VCAP_BIT_1;
+		err = vcap_rule_add_key_bit(st->vrule, VCAP_KF_L4_URG, val);
+		if (err)
+			goto out;
+	}
+
+	st->used_keys |= BIT(FLOW_DISSECTOR_KEY_TCP);
+
+	return err;
+
+out:
+	NL_SET_ERR_MSG_MOD(st->fco->common.extack, "tcp_flags parse error");
+	return err;
+}
+EXPORT_SYMBOL_GPL(vcap_tc_flower_handler_tcp_usage);
+
+int vcap_tc_flower_handler_arp_usage(struct vcap_tc_flower_parse_usage *st)
+{
+	struct flow_match_arp mt;
+	u16 value, mask;
+	u32 ipval, ipmsk;
+	int err;
+
+	flow_rule_match_arp(st->frule, &mt);
+
+	if (mt.mask->op) {
+		mask = 0x3;
+		if (st->l3_proto == ETH_P_ARP) {
+			value = mt.key->op == VCAP_ARP_OP_REQUEST ?
+					VCAP_IS2_ARP_REQUEST :
+					VCAP_IS2_ARP_REPLY;
+		} else { /* RARP */
+			value = mt.key->op == VCAP_ARP_OP_REQUEST ?
+					VCAP_IS2_RARP_REQUEST :
+					VCAP_IS2_RARP_REPLY;
+		}
+		err = vcap_rule_add_key_u32(st->vrule, VCAP_KF_ARP_OPCODE,
+					    value, mask);
+		if (err)
+			goto out;
+	}
+
+	/* The IS2 ARP keyset does not support ARP hardware addresses */
+	if (!is_zero_ether_addr(mt.mask->sha) ||
+	    !is_zero_ether_addr(mt.mask->tha)) {
+		err = -EINVAL;
+		goto out;
+	}
+
+	if (mt.mask->sip) {
+		ipval = be32_to_cpu((__force __be32)mt.key->sip);
+		ipmsk = be32_to_cpu((__force __be32)mt.mask->sip);
+
+		err = vcap_rule_add_key_u32(st->vrule, VCAP_KF_L3_IP4_SIP,
+					    ipval, ipmsk);
+		if (err)
+			goto out;
+	}
+
+	if (mt.mask->tip) {
+		ipval = be32_to_cpu((__force __be32)mt.key->tip);
+		ipmsk = be32_to_cpu((__force __be32)mt.mask->tip);
+
+		err = vcap_rule_add_key_u32(st->vrule, VCAP_KF_L3_IP4_DIP,
+					    ipval, ipmsk);
+		if (err)
+			goto out;
+	}
+
+	st->used_keys |= BIT(FLOW_DISSECTOR_KEY_ARP);
+
+	return 0;
+
+out:
+	NL_SET_ERR_MSG_MOD(st->fco->common.extack, "arp parse error");
+	return err;
+}
+EXPORT_SYMBOL_GPL(vcap_tc_flower_handler_arp_usage);
+
+int vcap_tc_flower_handler_ip_usage(struct vcap_tc_flower_parse_usage *st)
+{
+	struct flow_match_ip mt;
+	int err = 0;
+
+	flow_rule_match_ip(st->frule, &mt);
+
+	if (mt.mask->tos) {
+		err = vcap_rule_add_key_u32(st->vrule, VCAP_KF_L3_TOS,
+					    mt.key->tos,
+					    mt.mask->tos);
+		if (err)
+			goto out;
+	}
+
+	st->used_keys |= BIT(FLOW_DISSECTOR_KEY_IP);
+
+	return err;
+
+out:
+	NL_SET_ERR_MSG_MOD(st->fco->common.extack, "ip_tos parse error");
+	return err;
+}
+EXPORT_SYMBOL_GPL(vcap_tc_flower_handler_ip_usage);

drivers/net/ethernet/microchip/vcap/vcap_tc.h

+/* SPDX-License-Identifier: BSD-3-Clause */
+/* Copyright (C) 2023 Microchip Technology Inc. and its subsidiaries.
+ * Microchip VCAP TC
+ */
+
+#ifndef __VCAP_TC__
+#define __VCAP_TC__
+
+struct vcap_tc_flower_parse_usage {
+	struct flow_cls_offload *fco;
+	struct flow_rule *frule;
+	struct vcap_rule *vrule;
+	struct vcap_admin *admin;
+	u16 l3_proto;
+	u8 l4_proto;
+	unsigned int used_keys;
+};
+
+int vcap_tc_flower_handler_ethaddr_usage(struct vcap_tc_flower_parse_usage *st);
+int vcap_tc_flower_handler_ipv4_usage(struct vcap_tc_flower_parse_usage *st);
+int vcap_tc_flower_handler_ipv6_usage(struct vcap_tc_flower_parse_usage *st);
+int vcap_tc_flower_handler_portnum_usage(struct vcap_tc_flower_parse_usage *st);
+int vcap_tc_flower_handler_cvlan_usage(struct vcap_tc_flower_parse_usage *st);
+int vcap_tc_flower_handler_vlan_usage(struct vcap_tc_flower_parse_usage *st,
+				      enum vcap_key_field vid_key,
+				      enum vcap_key_field pcp_key);
+int vcap_tc_flower_handler_tcp_usage(struct vcap_tc_flower_parse_usage *st);
+int vcap_tc_flower_handler_arp_usage(struct vcap_tc_flower_parse_usage *st);
+int vcap_tc_flower_handler_ip_usage(struct vcap_tc_flower_parse_usage *st);
+
+#endif /* __VCAP_TC__ */