tcp_sack.c File Reference

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Functions
static void	scoreboard_remove_hole (sack_scoreboard_t *sb, sack_scoreboard_hole_t *hole)
static sack_scoreboard_hole_t *	scoreboard_insert_hole (sack_scoreboard_t *sb, u32 prev_index, u32 start, u32 end)
static void	scoreboard_update_sacked_rxt (sack_scoreboard_t *sb, u32 start, u32 end, u8 has_rxt)
static void	scoreboard_update_bytes (sack_scoreboard_t *sb, u32 ack, u32 snd_mss)
sack_scoreboard_hole_t *	scoreboard_next_rxt_hole (sack_scoreboard_t *sb, sack_scoreboard_hole_t *start, u8 have_unsent, u8 *can_rescue, u8 *snd_limited)
	Figure out the next hole to retransmit. More...
void	scoreboard_init_rxt (sack_scoreboard_t *sb, u32 snd_una)
void	scoreboard_init (sack_scoreboard_t *sb)
void	scoreboard_clear (sack_scoreboard_t *sb)
void	scoreboard_clear_reneging (sack_scoreboard_t *sb, u32 start, u32 end)
u8	tcp_scoreboard_is_sane_post_recovery (tcp_connection_t *tc)
	Test that scoreboard is sane after recovery. More...
void	tcp_rcv_sacks (tcp_connection_t *tc, u32 ack)
static u8	tcp_sack_vector_is_sane (sack_block_t *sacks)
void	tcp_update_sack_list (tcp_connection_t *tc, u32 start, u32 end)
	Build SACK list as per RFC2018. More...
u32	tcp_sack_list_bytes (tcp_connection_t *tc)

Function Documentation

scoreboard_clear()

void scoreboard_clear

(

sack_scoreboard_t *

sb

)

Definition at line 257 of file tcp_sack.c.

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scoreboard_clear_reneging()

void scoreboard_clear_reneging	(	sack_scoreboard_t *	sb,
		u32	start,
		u32	end
	)

Definition at line 276 of file tcp_sack.c.

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scoreboard_init()

void scoreboard_init

(

sack_scoreboard_t *

sb

)

Definition at line 249 of file tcp_sack.c.

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scoreboard_init_rxt()

void scoreboard_init_rxt	(	sack_scoreboard_t *	sb,
		u32	snd_una
	)

Definition at line 235 of file tcp_sack.c.

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scoreboard_insert_hole()

static sack_scoreboard_hole_t* scoreboard_insert_hole ( sack_scoreboard_t *  sb, u32  prev_index, u32  start, u32  end  )

static

Definition at line 54 of file tcp_sack.c.

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scoreboard_next_rxt_hole()

sack_scoreboard_hole_t* scoreboard_next_rxt_hole	(	sack_scoreboard_t *	sb,
		sack_scoreboard_hole_t *	start,
		u8	have_unsent,
		u8 *	can_rescue,
		u8 *	snd_limited
	)

Figure out the next hole to retransmit.

Follows logic proposed in RFC6675 Sec. 4, NextSeg()

Definition at line 175 of file tcp_sack.c.

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scoreboard_remove_hole()

static void scoreboard_remove_hole ( sack_scoreboard_t *  sb, sack_scoreboard_hole_t *  hole  )

static

Definition at line 19 of file tcp_sack.c.

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scoreboard_update_bytes()

static void scoreboard_update_bytes ( sack_scoreboard_t *  sb, u32  ack, u32  snd_mss  )

inlinestatic

Definition at line 102 of file tcp_sack.c.

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scoreboard_update_sacked_rxt()

static void scoreboard_update_sacked_rxt ( sack_scoreboard_t *  sb, u32  start, u32  end, u8  has_rxt  )

inlinestatic

Definition at line 91 of file tcp_sack.c.

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tcp_rcv_sacks()

void tcp_rcv_sacks	(	tcp_connection_t *	tc,
		u32	ack
	)

Definition at line 305 of file tcp_sack.c.

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tcp_sack_list_bytes()

u32 tcp_sack_list_bytes

(

tcp_connection_t *

tc

)

Definition at line 593 of file tcp_sack.c.

tcp_sack_vector_is_sane()

static u8 tcp_sack_vector_is_sane ( sack_block_t *  sacks )

static

Definition at line 521 of file tcp_sack.c.

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tcp_scoreboard_is_sane_post_recovery()

u8 tcp_scoreboard_is_sane_post_recovery

(

tcp_connection_t *

tc

)

Test that scoreboard is sane after recovery.

Returns 1 if scoreboard is empty or if first hole beyond snd_una.

Definition at line 296 of file tcp_sack.c.

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tcp_update_sack_list()

void tcp_update_sack_list	(	tcp_connection_t *	tc,
		u32	start,
		u32	end
	)

Build SACK list as per RFC2018.

Makes sure the first block contains the segment that generated the current ACK and the following ones are the ones most recently reported in SACK blocks.

Parameters

tc	TCP connection for which the SACK list is updated
start	Start sequence number of the newest SACK block
end	End sequence of the newest SACK block

Definition at line 544 of file tcp_sack.c.

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