#ifndef _AICWF_TCP_ACK_H_
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#define _AICWF_TCP_ACK_H_
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#include <uapi/linux/if_ether.h>
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#include <uapi/linux/tcp.h>
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#include <uapi/linux/ip.h>
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#include <uapi/linux/in.h>
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#include <linux/moduleparam.h>
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#include <net/tcp.h>
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#include <linux/timer.h>
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#define TCP_ACK_NUM 32
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#define TCP_ACK_EXIT_VAL 0x800
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#define TCP_ACK_DROP_CNT 10
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#define ACK_OLD_TIME 4000
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#define U32_BEFORE(a, b) ((__s32)((__u32)a - (__u32)b) <= 0)
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#define MAX_TCP_ACK 200
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/*min window size in KB, it's 256KB*/
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#define MIN_WIN 256
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#define SIZE_KB 1024
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struct msg_buf {
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//struct list_head list;
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struct sk_buff *skb;
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struct rwnx_vif *rwnx_vif;
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/* data just tx cmd use,not include the head */
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/*void *data;
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void *tran_data;
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unsigned long pcie_addr;
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u8 type;
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u8 mode;
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u16 len;
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unsigned long timeout;*/
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/* marlin 2 */
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/*unsigned int fifo_id;
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struct sprdwl_msg_list *msglist;*/
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/* marlin 3 */
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/*unsigned char buffer_type;
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struct sprdwl_xmit_msg_list *xmit_msg_list;
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unsigned char msg_type;
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unsigned long last_time;
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u8 ctxt_id;*/
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};
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struct tcp_ack_msg {
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u16 source;
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u16 dest;
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s32 saddr;
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s32 daddr;
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u32 seq;
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u16 win;
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};
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struct tcp_ack_info {
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int ack_info_num;
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int busy;
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int drop_cnt;
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int psh_flag;
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u32 psh_seq;
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u16 win_scale;
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/* seqlock for ack info */
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seqlock_t seqlock;
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unsigned long last_time;
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unsigned long timeout;
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struct timer_list timer;
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struct msg_buf *msgbuf;
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struct msg_buf *in_send_msg;
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struct tcp_ack_msg ack_msg;
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};
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struct tcp_ack_manage {
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/* 1 filter */
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atomic_t enable;
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int max_num;
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int free_index;
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unsigned long last_time;
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unsigned long timeout;
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atomic_t max_drop_cnt;
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/* lock for tcp ack alloc and free */
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spinlock_t lock;
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struct rwnx_hw *priv;
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struct tcp_ack_info ack_info[TCP_ACK_NUM];
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/*size in KB*/
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unsigned int ack_winsize;
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};
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struct msg_buf *intf_tcp_alloc_msg(struct msg_buf *msg);
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void tcp_ack_init(struct rwnx_hw *priv);
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void tcp_ack_deinit(struct rwnx_hw *priv);
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int is_drop_tcp_ack(struct tcphdr *tcphdr, int tcp_tot_len, unsigned short *win_scale);
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int is_tcp_ack(struct sk_buff *skb, unsigned short *win_scale);
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int filter_send_tcp_ack(struct rwnx_hw *priv, struct msg_buf *msgbuf,unsigned char *buf, unsigned int plen);
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void filter_rx_tcp_ack(struct rwnx_hw *priv,unsigned char *buf, unsigned plen);
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void move_tcpack_msg(struct rwnx_hw *priv, struct msg_buf * msg);
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#endif
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