fragment.c File Reference

#include "syshead.h"
#include "crypto.h"
#include "misc.h"
#include "fragment.h"
#include "integer.h"
#include "memdbg.h"

Include dependency graph for fragment.c:

Go to the source code of this file.

Macros
#define	FRAG_ERR(s)

Functions
static void	fragment_list_buf_init (struct fragment_list *list, const struct frame *frame)
static void	fragment_list_buf_free (struct fragment_list *list)
static struct fragment *	fragment_list_get_buf (struct fragment_list *list, int seq_id)
struct fragment_master *	fragment_init (struct frame *frame)
	Allocate and initialize a fragment_master structure.
void	fragment_free (struct fragment_master *f)
	Free a fragment_master structure and its internal packet buffers.
void	fragment_frame_init (struct fragment_master *f, const struct frame *frame)
	Allocate internal packet buffers for a fragment_master structure.
void	fragment_incoming (struct fragment_master *f, struct buffer *buf, const struct frame *frame)
	Process an incoming packet, which may or may not be fragmented.
static void	fragment_prepend_flags (struct buffer *buf, int type, int seq_id, int frag_id, int frag_size)
static int	optimal_fragment_size (int len, int max_frag_size)
void	fragment_outgoing (struct fragment_master *f, struct buffer *buf, const struct frame *frame)
	Process an outgoing packet, which may or may not need to be fragmented.
bool	fragment_ready_to_send (struct fragment_master *f, struct buffer *buf, const struct frame *frame)
	Check whether outgoing fragments are ready to be send, and if so make one available.
static void	fragment_ttl_reap (struct fragment_master *f)
void	fragment_wakeup (struct fragment_master *f, struct frame *frame)

Macro Definition Documentation

FRAG_ERR

#define FRAG_ERR

(

s

)

Value:

    {               \
        errmsg = s; \
        goto error; \
    }

Definition at line 37 of file fragment.c.

Referenced by fragment_incoming(), and fragment_outgoing().

Function Documentation

fragment_list_buf_free()

void fragment_list_buf_free ( struct fragment_list * list )

static

Definition at line 54 of file fragment.c.

References fragment::buf, fragment_list::fragments, free_buf(), and N_FRAG_BUF.

Referenced by fragment_free().

fragment_list_buf_init()

void fragment_list_buf_init ( struct fragment_list * list, const struct frame * frame )

static

Definition at line 44 of file fragment.c.

References alloc_buf(), fragment::buf, BUF_SIZE, fragment_list::fragments, and N_FRAG_BUF.

Referenced by fragment_frame_init().

fragment_list_get_buf()

struct fragment * fragment_list_get_buf ( struct fragment_list * list, int seq_id )

static

Definition at line 68 of file fragment.c.

References fragment::defined, fragment_list::fragments, fragment_list::index, modulo_add(), modulo_subtract(), N_FRAG_BUF, N_SEQ_ID, and fragment_list::seq_id.

Referenced by fragment_incoming().

fragment_prepend_flags()

void fragment_prepend_flags ( struct buffer * buf, int type, int seq_id, int frag_id, int frag_size )

static

Definition at line 256 of file fragment.c.

References ASSERT, fragment::buf, buf_write_prepend(), D_FRAG_DEBUG, dmsg, FRAG_ID_MASK, FRAG_ID_SHIFT, FRAG_SEQ_ID_MASK, FRAG_SEQ_ID_SHIFT, FRAG_SIZE_MASK, FRAG_SIZE_ROUND_SHIFT, FRAG_SIZE_SHIFT, FRAG_TYPE_MASK, FRAG_TYPE_SHIFT, FRAG_WHOLE, FRAG_YES_NOTLAST, fragment_header_format, hton_fragment_header_type, and buffer::len.

Referenced by fragment_outgoing(), and fragment_ready_to_send().

fragment_ttl_reap()

void fragment_ttl_reap ( struct fragment_master * f )

static

Definition at line 398 of file fragment.c.

References D_FRAG_ERRORS, fragment::defined, FRAG_TTL_SEC, fragment_list::fragments, fragment_master::incoming, msg, N_FRAG_BUF, now, and fragment::timestamp.

Referenced by fragment_wakeup().

optimal_fragment_size()

int optimal_fragment_size ( int len, int max_frag_size )

inlinestatic

Definition at line 293 of file fragment.c.

References FRAG_SIZE_ROUND_MASK, fragment::max_frag_size, and min_int().

Referenced by fragment_outgoing().