/* SPDX-License-Identifier: GPL-2.0+ */

#pragma once

#include <avm/pa/avm_pa.h>

/* Struct for platform specific hwardware_pa configuration */
struct hwpa_backend_config	{
	unsigned long flags;
#define HWPA_PLATFORM_SPECIFIC_FLAGS_MASK AVM_HW_F_NO_BSESSION

	int  (*alloc_rx_channel)(avm_pid_handle pid_handle);
	int  (*alloc_tx_channel)(avm_pid_handle pid_handle);
	int  (*free_rx_channel)(avm_pid_handle pid_handle);
	int  (*free_tx_channel)(avm_pid_handle pid_handle);
};
#define HWPA_BACKEND_HAS_SESSION_CHECK 0x10
#if HWPA_BACKEND_HAS_SESSION_CHECK & AVM_HW_F_ALL
#error Flag is used by avm pa
#endif

enum {
	hw_handle_zero = 0,
	hw_handle_invalid = ~0,
};

/* utilities
 */
int hwpa_pktcmp(const struct sk_buff *skb1,const struct sk_buff *skb2);
const void *hwpa_get_hdr(const struct avm_pa_pkt_match *match,
			 unsigned char type);
struct sk_buff *hwpa_pkt_push_tcp(struct sk_buff *skb);
struct sk_buff *hwpa_pkt_push_udp(struct sk_buff *skb);
struct sk_buff *hwpa_pkt_push_ipv4(struct sk_buff *skb);
struct sk_buff *hwpa_pkt_push_ipv6(struct sk_buff *skb);
struct sk_buff *hwpa_pkt_push_pppoe(struct sk_buff *skb);
struct sk_buff *hwpa_pkt_push_vlan(struct sk_buff *skb);
struct sk_buff *hwpa_pkt_push_eth(struct sk_buff *skb);
struct sk_buff *hwpa_pkt_alloc(unsigned int payload);
struct net_device *hwpa_get_netdev(avm_pid_handle pid);
struct net_device *hwpa_get_and_hold_dev_master(struct net_device *dev);
uint32_t hwpa_ipv4_gen_session_hash_raw(uint32_t flow_ip, uint32_t flow_ident,
				       uint32_t return_ip_xlate, uint32_t return_ident_xlate,
				       uint8_t protocol);
uint32_t hwpa_ipv6_gen_session_hash_raw(uint32_t *flow_ip, uint32_t flow_ident,
				       uint32_t *return_ip, uint32_t return_ident,
				       uint8_t protocol);
uint32_t hwpa_l2_gen_session_hash_raw(const uint8_t *smac, const uint8_t *dmac, const uint16_t vlan_tci);