/* SPDX-License-Identifier: GPL-2.0
 * Copyright(c) 2020 Intel Corporation.
 */

#ifndef XSKXCEIVER_H_
#define XSKXCEIVER_H_

#ifndef SOL_XDP
#define SOL_XDP 283
#endif

#ifndef AF_XDP
#define AF_XDP 44
#endif

#ifndef PF_XDP
#define PF_XDP AF_XDP
#endif

#ifndef SO_BUSY_POLL_BUDGET
#define SO_BUSY_POLL_BUDGET 70
#endif

#ifndef SO_PREFER_BUSY_POLL
#define SO_PREFER_BUSY_POLL 69
#endif

#define TEST_PASS 0
#define TEST_FAILURE -1
#define TEST_CONTINUE 1
#define MAX_INTERFACES 2
#define MAX_INTERFACE_NAME_CHARS 16
#define MAX_INTERFACES_NAMESPACE_CHARS 16
#define MAX_SOCKETS 2
#define MAX_TEST_NAME_SIZE 32
#define MAX_TEARDOWN_ITER 10
#define PKT_HDR_SIZE (sizeof(struct ethhdr) + sizeof(struct iphdr) + \
			sizeof(struct udphdr))
#define MIN_ETH_PKT_SIZE 64
#define ETH_FCS_SIZE 4
#define MIN_PKT_SIZE (MIN_ETH_PKT_SIZE - ETH_FCS_SIZE)
#define PKT_SIZE (MIN_PKT_SIZE)
#define IP_PKT_SIZE (PKT_SIZE - sizeof(struct ethhdr))
#define IP_PKT_VER 0x4
#define IP_PKT_TOS 0x9
#define UDP_PKT_SIZE (IP_PKT_SIZE - sizeof(struct iphdr))
#define UDP_PKT_DATA_SIZE (UDP_PKT_SIZE - sizeof(struct udphdr))
#define USLEEP_MAX 10000
#define SOCK_RECONF_CTR 10
#define BATCH_SIZE 64
#define POLL_TMOUT 1000
#define THREAD_TMOUT 3
#define DEFAULT_PKT_CNT (4 * 1024)
#define DEFAULT_UMEM_BUFFERS (DEFAULT_PKT_CNT / 4)
#define UMEM_SIZE (DEFAULT_UMEM_BUFFERS * XSK_UMEM__DEFAULT_FRAME_SIZE)
#define RX_FULL_RXQSIZE 32
#define UMEM_HEADROOM_TEST_SIZE 128
#define XSK_UMEM__INVALID_FRAME_SIZE (XSK_UMEM__DEFAULT_FRAME_SIZE + 1)

#define print_verbose(x...) do { if (opt_verbose) ksft_print_msg(x); } while (0)

enum test_mode {
	TEST_MODE_SKB,
	TEST_MODE_DRV,
	TEST_MODE_ZC,
	TEST_MODE_MAX
};

enum test_type {
	TEST_TYPE_RUN_TO_COMPLETION,
	TEST_TYPE_RUN_TO_COMPLETION_2K_FRAME,
	TEST_TYPE_RUN_TO_COMPLETION_SINGLE_PKT,
	TEST_TYPE_RX_POLL,
	TEST_TYPE_TX_POLL,
	TEST_TYPE_POLL_RXQ_TMOUT,
	TEST_TYPE_POLL_TXQ_TMOUT,
	TEST_TYPE_UNALIGNED,
	TEST_TYPE_ALIGNED_INV_DESC,
	TEST_TYPE_ALIGNED_INV_DESC_2K_FRAME,
	TEST_TYPE_UNALIGNED_INV_DESC,
	TEST_TYPE_HEADROOM,
	TEST_TYPE_TEARDOWN,
	TEST_TYPE_BIDI,
	TEST_TYPE_STATS_RX_DROPPED,
	TEST_TYPE_STATS_TX_INVALID_DESCS,
	TEST_TYPE_STATS_RX_FULL,
	TEST_TYPE_STATS_FILL_EMPTY,
	TEST_TYPE_BPF_RES,
	TEST_TYPE_MAX
};

static bool opt_pkt_dump;
static bool opt_verbose;

struct xsk_umem_info {
	struct xsk_ring_prod fq;
	struct xsk_ring_cons cq;
	struct xsk_umem *umem;
	u32 num_frames;
	u32 frame_headroom;
	void *buffer;
	u32 frame_size;
	u32 base_addr;
	bool unaligned_mode;
};

struct xsk_socket_info {
	struct xsk_ring_cons rx;
	struct xsk_ring_prod tx;
	struct xsk_umem_info *umem;
	struct xsk_socket *xsk;
	u32 outstanding_tx;
	u32 rxqsize;
};

struct pkt {
	u64 addr;
	u32 len;
	u32 payload;
	bool valid;
};

struct pkt_stream {
	u32 nb_pkts;
	u32 rx_pkt_nb;
	struct pkt *pkts;
	bool use_addr_for_fill;
};

struct ifobject;
typedef int (*validation_func_t)(struct ifobject *ifobj);
typedef void *(*thread_func_t)(void *arg);

struct ifobject {
	char ifname[MAX_INTERFACE_NAME_CHARS];
	char nsname[MAX_INTERFACES_NAMESPACE_CHARS];
	struct xsk_socket_info *xsk;
	struct xsk_socket_info *xsk_arr;
	struct xsk_umem_info *umem;
	thread_func_t func_ptr;
	validation_func_t validation_func;
	struct pkt_stream *pkt_stream;
	int ns_fd;
	int xsk_map_fd;
	u32 dst_ip;
	u32 src_ip;
	u32 xdp_flags;
	u32 bind_flags;
	u16 src_port;
	u16 dst_port;
	bool tx_on;
	bool rx_on;
	bool use_poll;
	bool busy_poll;
	bool use_fill_ring;
	bool release_rx;
	bool shared_umem;
	u8 dst_mac[ETH_ALEN];
	u8 src_mac[ETH_ALEN];
};

struct test_spec {
	struct ifobject *ifobj_tx;
	struct ifobject *ifobj_rx;
	struct pkt_stream *tx_pkt_stream_default;
	struct pkt_stream *rx_pkt_stream_default;
	u16 total_steps;
	u16 current_step;
	u16 nb_sockets;
	bool fail;
	enum test_mode mode;
	char name[MAX_TEST_NAME_SIZE];
};

pthread_barrier_t barr;
pthread_mutex_t pacing_mutex = PTHREAD_MUTEX_INITIALIZER;
pthread_cond_t pacing_cond = PTHREAD_COND_INITIALIZER;

int pkts_in_flight;

#endif				/* XSKXCEIVER_H_ */