6b13f685e
 김민수
BSP 최초 추가
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#ifndef _ACKVEC_H
#define _ACKVEC_H
#include <linux/dccp.h>
#include <linux/compiler.h>
#include <linux/list.h>
#include <linux/types.h>
#define DCCPAV_NUM_ACKVECS 2
#define DCCPAV_MAX_ACKVEC_LEN (DCCP_SINGLE_OPT_MAXLEN * DCCPAV_NUM_ACKVECS)
#define DCCPAV_MIN_OPTLEN 16
#define DCCPAV_BURST_THRESH (DCCPAV_MAX_ACKVEC_LEN / 8)
enum dccp_ackvec_states {
DCCPAV_RECEIVED = 0x00,
DCCPAV_ECN_MARKED = 0x40,
DCCPAV_RESERVED = 0x80,
DCCPAV_NOT_RECEIVED = 0xC0
};
#define DCCPAV_MAX_RUNLEN 0x3F
static inline u8 dccp_ackvec_runlen(const u8 *cell)
{
return *cell & DCCPAV_MAX_RUNLEN;
}
static inline u8 dccp_ackvec_state(const u8 *cell)
{
return *cell & ~DCCPAV_MAX_RUNLEN;
}
struct dccp_ackvec {
u8 av_buf[DCCPAV_MAX_ACKVEC_LEN];
u16 av_buf_head;
u16 av_buf_tail;
u64 av_buf_ackno:48;
u64 av_tail_ackno:48;
bool av_buf_nonce[DCCPAV_NUM_ACKVECS];
u8 av_overflow:1;
struct list_head av_records;
};
struct dccp_ackvec_record {
struct list_head avr_node;
u64 avr_ack_seqno:48;
u64 avr_ack_ackno:48;
u16 avr_ack_ptr;
u8 avr_ack_runlen;
u8 avr_ack_nonce:1;
};
int dccp_ackvec_init(void);
void dccp_ackvec_exit(void);
struct dccp_ackvec *dccp_ackvec_alloc(const gfp_t priority);
void dccp_ackvec_free(struct dccp_ackvec *av);
void dccp_ackvec_input(struct dccp_ackvec *av, struct sk_buff *skb);
int dccp_ackvec_update_records(struct dccp_ackvec *av, u64 seq, u8 sum);
void dccp_ackvec_clear_state(struct dccp_ackvec *av, const u64 ackno);
u16 dccp_ackvec_buflen(const struct dccp_ackvec *av);
static inline bool dccp_ackvec_is_empty(const struct dccp_ackvec *av)
{
return av->av_overflow == 0 && av->av_buf_head == av->av_buf_tail;
}
struct dccp_ackvec_parsed {
u8 *vec,
len,
nonce:1;
struct list_head node;
};
int dccp_ackvec_parsed_add(struct list_head *head, u8 *vec, u8 len, u8 nonce);
void dccp_ackvec_parsed_cleanup(struct list_head *parsed_chunks);
#endif /* _ACKVEC_H */
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