tcp_input.c File Reference

Include dependency graph for tcp_input.c:

Go to the source code of this file.

Data Structures
struct	tcp_rx_trace_t

Macros
#define	tcp_error(n, s)   s,
#define	foreach_tcp_state_next
#define	tcp_next_output(is_ip4)
#define	foreach_tcp4_input_next
#define	foreach_tcp6_input_next
#define	filter_flags   (TCP_FLAG_SYN|TCP_FLAG_ACK|TCP_FLAG_RST|TCP_FLAG_FIN)

Typedefs
typedef enum _tcp_established_next	tcp_established_next_t
typedef enum _tcp_rcv_process_next	tcp_rcv_process_next_t
typedef enum _tcp_syn_sent_next	tcp_syn_sent_next_t
typedef enum _tcp_listen_next	tcp_listen_next_t
typedef enum _tcp_state_next	tcp_state_next_t
typedef enum _tcp_input_next	tcp_input_next_t

Functions
static u8	tcp_segment_in_rcv_wnd (tcp_connection_t *tc, u32 seq, u32 end_seq)
	Validate segment sequence number. More...
void	tcp_options_parse (tcp_header_t *th, tcp_options_t *to)
static int	tcp_segment_check_paws (tcp_connection_t *tc)
static int	tcp_segment_validate (vlib_main_t *vm, tcp_connection_t *tc0, vlib_buffer_t *b0, tcp_header_t *th0, u32 *next0)
	Validate incoming segment as per RFC793 p. More...
static int	tcp_rcv_ack_is_acceptable (tcp_connection_t *tc0, vlib_buffer_t *tb0)
static void	tcp_estimate_rtt (tcp_connection_t *tc, u32 mrtt)
	Compute smoothed RTT as per VJ's '88 SIGCOMM and RFC6298. More...
static int	tcp_update_rtt (tcp_connection_t *tc, u32 ack)
	Update RTT estimate and RTO timer. More...
static void	tcp_dequeue_acked (tcp_connection_t *tc, u32 ack)
	Dequeue bytes that have been acked and while at it update RTT estimates. More...
static u8	tcp_ack_is_dupack (tcp_connection_t *tc, vlib_buffer_t *b, u32 new_snd_wnd)
	Check if dupack as per RFC5681 Sec. More...
void	scoreboard_remove_hole (sack_scoreboard_t *sb, sack_scoreboard_hole_t *hole)
sack_scoreboard_hole_t *	scoreboard_insert_hole (sack_scoreboard_t *sb, sack_scoreboard_hole_t *prev, u32 start, u32 end)
static void	tcp_rcv_sacks (tcp_connection_t *tc, u32 ack)
static void	tcp_update_snd_wnd (tcp_connection_t *tc, u32 seq, u32 ack, u32 snd_wnd)
	Update snd_wnd. More...
static void	tcp_cc_congestion (tcp_connection_t *tc)
static void	tcp_cc_recover (tcp_connection_t *tc)
static void	tcp_cc_rcv_ack (tcp_connection_t *tc)
static void	tcp_cc_rcv_dupack (tcp_connection_t *tc, u32 ack)
void	tcp_cc_init (tcp_connection_t *tc)
static int	tcp_rcv_ack (tcp_connection_t *tc, vlib_buffer_t *b, tcp_header_t *th, u32 *next, u32 *error)
static void	tcp_update_sack_list (tcp_connection_t *tc, u32 start, u32 end)
	Build SACK list as per RFC2018. More...
static u32	tcp_session_enqueue_data (tcp_connection_t *tc, vlib_buffer_t *b, u16 data_len)
	Enqueue data for delivery to application. More...
static u32	tcp_session_enqueue_ooo (tcp_connection_t *tc, vlib_buffer_t *b, u16 data_len)
	Enqueue out-of-order data. More...
static int	tcp_can_delack (tcp_connection_t *tc)
	Check if ACK could be delayed. More...
static int	tcp_segment_rcv (tcp_main_t *tm, tcp_connection_t *tc, vlib_buffer_t *b, u16 n_data_bytes, u32 *next0)
void	delack_timers_init (tcp_main_t *tm, u32 thread_index)
static uword	tcp46_established_inline (vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *from_frame, int is_ip4)
static uword	tcp4_established (vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *from_frame)
static uword	tcp6_established (vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *from_frame)
	VLIB_NODE_FUNCTION_MULTIARCH (tcp4_established_node, tcp4_established)
	VLIB_NODE_FUNCTION_MULTIARCH (tcp6_established_node, tcp6_established)
static uword	tcp46_syn_sent_inline (vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *from_frame, int is_ip4)
static uword	tcp4_syn_sent (vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *from_frame)
static uword	tcp6_syn_sent_rcv (vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *from_frame)
	VLIB_NODE_FUNCTION_MULTIARCH (tcp4_syn_sent_node, tcp4_syn_sent)
	VLIB_NODE_FUNCTION_MULTIARCH (tcp6_syn_sent_node, tcp6_syn_sent_rcv)
static uword	tcp46_rcv_process_inline (vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *from_frame, int is_ip4)
	Handles reception for all states except LISTEN, SYN-SENT and ESTABLISHED as per RFC793 p. More...
static uword	tcp4_rcv_process (vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *from_frame)
static uword	tcp6_rcv_process (vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *from_frame)
	VLIB_NODE_FUNCTION_MULTIARCH (tcp4_rcv_process_node, tcp4_rcv_process)
	VLIB_NODE_FUNCTION_MULTIARCH (tcp6_rcv_process_node, tcp6_rcv_process)
static uword	tcp46_listen_inline (vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *from_frame, int is_ip4)
	LISTEN state processing as per RFC 793 p. More...
static uword	tcp4_listen (vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *from_frame)
static uword	tcp6_listen (vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *from_frame)
	VLIB_NODE_FUNCTION_MULTIARCH (tcp4_listen_node, tcp4_listen)
	VLIB_NODE_FUNCTION_MULTIARCH (tcp6_listen_node, tcp6_listen)
u8 *	format_tcp_rx_trace (u8 *s, va_list *args)
static uword	tcp46_input_inline (vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *from_frame, int is_ip4)
static uword	tcp4_input (vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *from_frame)
static uword	tcp6_input (vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *from_frame)
	VLIB_NODE_FUNCTION_MULTIARCH (tcp4_input_node, tcp4_input)
	VLIB_NODE_FUNCTION_MULTIARCH (tcp6_input_node, tcp6_input)
void	tcp_update_time (f64 now, u32 thread_index)
static void	tcp_dispatch_table_init (tcp_main_t *tm)
clib_error_t *	tcp_input_init (vlib_main_t *vm)

Variables
static char *	tcp_error_strings []
vlib_node_registration_t	tcp4_established_node
	(constructor) VLIB_REGISTER_NODE (tcp4_established_node) More...
vlib_node_registration_t	tcp6_established_node
	(constructor) VLIB_REGISTER_NODE (tcp6_established_node) More...
vlib_node_registration_t	tcp4_syn_sent_node
	(constructor) VLIB_REGISTER_NODE (tcp4_syn_sent_node) More...
vlib_node_registration_t	tcp6_syn_sent_node
	(constructor) VLIB_REGISTER_NODE (tcp6_syn_sent_node) More...
vlib_node_registration_t	tcp4_rcv_process_node
	(constructor) VLIB_REGISTER_NODE (tcp4_rcv_process_node) More...
vlib_node_registration_t	tcp6_rcv_process_node
	(constructor) VLIB_REGISTER_NODE (tcp6_rcv_process_node) More...
vlib_node_registration_t	tcp4_listen_node
	(constructor) VLIB_REGISTER_NODE (tcp4_listen_node) More...
vlib_node_registration_t	tcp6_listen_node
	(constructor) VLIB_REGISTER_NODE (tcp6_listen_node) More...
vlib_node_registration_t	tcp4_input_node
	(constructor) VLIB_REGISTER_NODE (tcp4_input_node) More...
vlib_node_registration_t	tcp6_input_node
	(constructor) VLIB_REGISTER_NODE (tcp6_input_node) More...

Macro Definition Documentation

#define filter_flags   (TCP_FLAG_SYN|TCP_FLAG_ACK|TCP_FLAG_RST|TCP_FLAG_FIN)

Definition at line 2090 of file tcp_input.c.

#define foreach_tcp4_input_next

Value:

_ (DROP, "error-drop")                        \
  _ (LISTEN, "tcp4-listen")                     \
  _ (RCV_PROCESS, "tcp4-rcv-process")           \
  _ (SYN_SENT, "tcp4-syn-sent")                 \
  _ (ESTABLISHED, "tcp4-established")           \
  _ (RESET, "tcp4-reset")

Definition at line 2053 of file tcp_input.c.

#define foreach_tcp6_input_next

Value:

_ (DROP, "error-drop")                        \
  _ (LISTEN, "tcp6-listen")                     \
  _ (RCV_PROCESS, "tcp6-rcv-process")           \
  _ (SYN_SENT, "tcp6-syn-sent")                 \
  _ (ESTABLISHED, "tcp6-established")           \
  _ (RESET, "tcp6-reset")

Definition at line 2061 of file tcp_input.c.

#define foreach_tcp_state_next

Value:

_ (DROP, "error-drop")                        \
  _ (TCP4_OUTPUT, "tcp4-output")                \
  _ (TCP6_OUTPUT, "tcp6-output")

Definition at line 29 of file tcp_input.c.

#define tcp_error	(		n,
			s
	)		s,

#define tcp_next_output

(

is_ip4

)

Value:

(is_ip4 ? TCP_NEXT_TCP4_OUTPUT          \
                                        : TCP_NEXT_TCP6_OUTPUT)

Definition at line 75 of file tcp_input.c.

Typedef Documentation

typedef enum _tcp_established_next tcp_established_next_t

typedef enum _tcp_input_next tcp_input_next_t

typedef enum _tcp_listen_next tcp_listen_next_t

typedef enum _tcp_rcv_process_next tcp_rcv_process_next_t

typedef enum _tcp_state_next tcp_state_next_t

typedef enum _tcp_syn_sent_next tcp_syn_sent_next_t

Function Documentation

void delack_timers_init	(	tcp_main_t *	tm,
		u32	thread_index
	)

Definition at line 966 of file tcp_input.c.

Here is the caller graph for this function:

u8* format_tcp_rx_trace	(	u8 *	s,
		va_list *	args
	)

Definition at line 2077 of file tcp_input.c.

Here is the call graph for this function:

sack_scoreboard_hole_t* scoreboard_insert_hole	(	sack_scoreboard_t *	sb,
		sack_scoreboard_hole_t *	prev,
		u32	start,
		u32	end
	)

Definition at line 432 of file tcp_input.c.

Here is the call graph for this function:

Here is the caller graph for this function:

void scoreboard_remove_hole	(	sack_scoreboard_t *	sb,
		sack_scoreboard_hole_t *	hole
	)

Definition at line 408 of file tcp_input.c.

Here is the caller graph for this function:

static uword tcp46_established_inline ( vlib_main_t *  vm, vlib_node_runtime_t *  node, vlib_frame_t *  from_frame, int  is_ip4  )

inlinestatic

Definition at line 987 of file tcp_input.c.

Here is the call graph for this function:

Here is the caller graph for this function:

static uword tcp46_input_inline ( vlib_main_t *  vm, vlib_node_runtime_t *  node, vlib_frame_t *  from_frame, int  is_ip4  )

inlinestatic

Definition at line 2093 of file tcp_input.c.

Here is the call graph for this function:

Here is the caller graph for this function:

static uword tcp46_listen_inline ( vlib_main_t *  vm, vlib_node_runtime_t *  node, vlib_frame_t *  from_frame, int  is_ip4  )

inlinestatic

LISTEN state processing as per RFC 793 p.

65

Definition at line 1840 of file tcp_input.c.

Here is the call graph for this function:

Here is the caller graph for this function:

static uword tcp46_rcv_process_inline ( vlib_main_t *  vm, vlib_node_runtime_t *  node, vlib_frame_t *  from_frame, int  is_ip4  )

inlinestatic

Handles reception for all states except LISTEN, SYN-SENT and ESTABLISHED as per RFC793 p.

64

Definition at line 1484 of file tcp_input.c.

Here is the call graph for this function:

Here is the caller graph for this function:

static uword tcp46_syn_sent_inline ( vlib_main_t *  vm, vlib_node_runtime_t *  node, vlib_frame_t *  from_frame, int  is_ip4  )

inlinestatic

Definition at line 1182 of file tcp_input.c.

Here is the call graph for this function:

Here is the caller graph for this function:

static uword tcp4_established ( vlib_main_t *  vm, vlib_node_runtime_t *  node, vlib_frame_t *  from_frame  )

static

Definition at line 1122 of file tcp_input.c.

Here is the call graph for this function:

Here is the caller graph for this function:

static uword tcp4_input ( vlib_main_t *  vm, vlib_node_runtime_t *  node, vlib_frame_t *  from_frame  )

static

Definition at line 2206 of file tcp_input.c.

Here is the call graph for this function:

static uword tcp4_listen ( vlib_main_t *  vm, vlib_node_runtime_t *  node, vlib_frame_t *  from_frame  )

static

Definition at line 1984 of file tcp_input.c.

Here is the call graph for this function:

Here is the caller graph for this function:

static uword tcp4_rcv_process ( vlib_main_t *  vm, vlib_node_runtime_t *  node, vlib_frame_t *  from_frame  )

static

Definition at line 1778 of file tcp_input.c.

Here is the call graph for this function:

static uword tcp4_syn_sent ( vlib_main_t *  vm, vlib_node_runtime_t *  node, vlib_frame_t *  from_frame  )

static

Definition at line 1425 of file tcp_input.c.

Here is the call graph for this function:

Here is the caller graph for this function:

static uword tcp6_established ( vlib_main_t *  vm, vlib_node_runtime_t *  node, vlib_frame_t *  from_frame  )

static

Definition at line 1129 of file tcp_input.c.

Here is the call graph for this function:

static uword tcp6_input ( vlib_main_t *  vm, vlib_node_runtime_t *  node, vlib_frame_t *  from_frame  )

static

Definition at line 2213 of file tcp_input.c.

Here is the call graph for this function:

static uword tcp6_listen ( vlib_main_t *  vm, vlib_node_runtime_t *  node, vlib_frame_t *  from_frame  )

static

Definition at line 1991 of file tcp_input.c.

Here is the call graph for this function:

static uword tcp6_rcv_process ( vlib_main_t *  vm, vlib_node_runtime_t *  node, vlib_frame_t *  from_frame  )

static

Definition at line 1785 of file tcp_input.c.

Here is the call graph for this function:

static uword tcp6_syn_sent_rcv ( vlib_main_t *  vm, vlib_node_runtime_t *  node, vlib_frame_t *  from_frame  )

static

Definition at line 1432 of file tcp_input.c.

Here is the call graph for this function:

static u8 tcp_ack_is_dupack ( tcp_connection_t *  tc, vlib_buffer_t *  b, u32  new_snd_wnd  )

inlinestatic

Check if dupack as per RFC5681 Sec.

2

Definition at line 399 of file tcp_input.c.

Here is the caller graph for this function:

static int tcp_can_delack ( tcp_connection_t *  tc )

inlinestatic

Check if ACK could be delayed.

DELACK timer is set only after frame is processed so this can return true for a full bursts of packets.

Definition at line 882 of file tcp_input.c.

Here is the call graph for this function:

Here is the caller graph for this function:

static void tcp_cc_congestion ( tcp_connection_t *  tc )

static

Definition at line 589 of file tcp_input.c.

Here is the caller graph for this function:

void tcp_cc_init

(

tcp_connection_t *

tc

)

Definition at line 679 of file tcp_input.c.

Here is the call graph for this function:

Here is the caller graph for this function:

static void tcp_cc_rcv_ack ( tcp_connection_t *  tc )

static

Definition at line 610 of file tcp_input.c.

Here is the call graph for this function:

Here is the caller graph for this function:

static void tcp_cc_rcv_dupack ( tcp_connection_t *  tc, u32  ack  )

static

Definition at line 643 of file tcp_input.c.

Here is the call graph for this function:

Here is the caller graph for this function:

static void tcp_cc_recover ( tcp_connection_t *  tc )

static

Definition at line 595 of file tcp_input.c.

Here is the call graph for this function:

Here is the caller graph for this function:

static void tcp_dequeue_acked ( tcp_connection_t *  tc, u32  ack  )

static

Dequeue bytes that have been acked and while at it update RTT estimates.

Definition at line 384 of file tcp_input.c.

Here is the call graph for this function:

Here is the caller graph for this function:

static void tcp_dispatch_table_init ( tcp_main_t *  tm )

static

Definition at line 2272 of file tcp_input.c.

Here is the caller graph for this function:

static void tcp_estimate_rtt ( tcp_connection_t *  tc, u32  mrtt  )

static

Compute smoothed RTT as per VJ's '88 SIGCOMM and RFC6298.

Note that although the original article, srtt and rttvar are scaled to minimize round-off errors, here we don't. Instead, we rely on better precision time measurements.

TODO support us rtt resolution

Definition at line 318 of file tcp_input.c.

Here is the caller graph for this function:

clib_error_t* tcp_input_init

(

vlib_main_t *

vm

)

Definition at line 2321 of file tcp_input.c.

Here is the call graph for this function:

void tcp_options_parse	(	tcp_header_t *	th,
		tcp_options_t *	to
	)

Definition at line 108 of file tcp_input.c.

Here is the caller graph for this function:

static int tcp_rcv_ack ( tcp_connection_t *  tc, vlib_buffer_t *  b, tcp_header_t *  th, u32 *  next, u32 *  error  )

static

Definition at line 686 of file tcp_input.c.

Here is the call graph for this function:

Here is the caller graph for this function:

static int tcp_rcv_ack_is_acceptable ( tcp_connection_t *  tc0, vlib_buffer_t *  tb0  )

inlinestatic

Definition at line 301 of file tcp_input.c.

Here is the caller graph for this function:

static void tcp_rcv_sacks ( tcp_connection_t *  tc, u32  ack  )

static

Definition at line 466 of file tcp_input.c.

Here is the call graph for this function:

Here is the caller graph for this function:

static int tcp_segment_check_paws ( tcp_connection_t *  tc )

inlinestatic

Definition at line 204 of file tcp_input.c.

Here is the caller graph for this function:

static u8 tcp_segment_in_rcv_wnd ( tcp_connection_t *  tc, u32  seq, u32  end_seq  )

inlinestatic

Validate segment sequence number.

As per RFC793:

Segment Receive Test Length Window

---

0 0 SEG.SEQ = RCV.NXT 0 >0 RCV.NXT =< SEG.SEQ < RCV.NXT+RCV.WND >0 0 not acceptable >0 >0 RCV.NXT =< SEG.SEQ < RCV.NXT+RCV.WND or RCV.NXT =< SEG.SEQ+SEG.LEN-1 < RCV.NXT+RCV.WND

This ultimately consists in checking if segment falls within the window. The one important difference compared to RFC793 is that we use rcv_las, or the rcv_nxt at last ack sent instead of rcv_nxt since that's the peer's reference when computing our receive window.

This accepts only segments within the window.

Definition at line 101 of file tcp_input.c.

Here is the caller graph for this function:

static int tcp_segment_rcv ( tcp_main_t *  tm, tcp_connection_t *  tc, vlib_buffer_t *  b, u16  n_data_bytes, u32 *  next0  )

static

Definition at line 895 of file tcp_input.c.

Here is the call graph for this function:

Here is the caller graph for this function:

static int tcp_segment_validate ( vlib_main_t *  vm, tcp_connection_t *  tc0, vlib_buffer_t *  b0, tcp_header_t *  th0, u32 *  next0  )

static

Validate incoming segment as per RFC793 p.

69 and RFC1323 p. 19

It first verifies if segment has a wrapped sequence number (PAWS) and then does the processing associated to the first four steps (ignoring security and precedence): sequence number, rst bit and syn bit checks.

Returns

0 if segments passes validation.

Definition at line 222 of file tcp_input.c.

Here is the call graph for this function:

Here is the caller graph for this function:

static u32 tcp_session_enqueue_data ( tcp_connection_t *  tc, vlib_buffer_t *  b, u16  data_len  )

inlinestatic

Enqueue data for delivery to application.

Definition at line 799 of file tcp_input.c.

Here is the call graph for this function:

Here is the caller graph for this function:

static u32 tcp_session_enqueue_ooo ( tcp_connection_t *  tc, vlib_buffer_t *  b, u16  data_len  )

inlinestatic

Enqueue out-of-order data.

Definition at line 846 of file tcp_input.c.

Here is the call graph for this function:

Here is the caller graph for this function:

static int tcp_update_rtt ( tcp_connection_t *  tc, u32  ack  )

static

Update RTT estimate and RTO timer.

Measure RTT: We have two sources of RTT measurements: TSOPT and ACK timing. Middle boxes are known to fiddle with TCP options so we should give higher priority to ACK timing.

return 1 if valid rtt 0 otherwise

Definition at line 348 of file tcp_input.c.

Here is the call graph for this function:

Here is the caller graph for this function:

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

static

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 757 of file tcp_input.c.

Here is the caller graph for this function:

static void tcp_update_snd_wnd ( tcp_connection_t *  tc, u32  seq, u32  ack, u32  snd_wnd  )

static

Update snd_wnd.

If (SND.WL1 < SEG.SEQ or (SND.WL1 = SEG.SEQ and SND.WL2 =< SEG.ACK)), set SND.WND <- SEG.WND, set SND.WL1 <- SEG.SEQ, and set SND.WL2 <- SEG.ACK

Definition at line 578 of file tcp_input.c.

Here is the caller graph for this function:

void tcp_update_time	(	f64	now,
		u32	thread_index
	)

Definition at line 2265 of file tcp_input.c.

Here is the call graph for this function:

Here is the caller graph for this function:

VLIB_NODE_FUNCTION_MULTIARCH	(	tcp4_established_node	,
		tcp4_established
	)

Here is the caller graph for this function:

VLIB_NODE_FUNCTION_MULTIARCH	(	tcp6_established_node	,
		tcp6_established
	)

VLIB_NODE_FUNCTION_MULTIARCH	(	tcp4_syn_sent_node	,
		tcp4_syn_sent
	)

VLIB_NODE_FUNCTION_MULTIARCH	(	tcp6_syn_sent_node	,
		tcp6_syn_sent_rcv
	)

VLIB_NODE_FUNCTION_MULTIARCH	(	tcp4_rcv_process_node	,
		tcp4_rcv_process
	)

VLIB_NODE_FUNCTION_MULTIARCH	(	tcp6_rcv_process_node	,
		tcp6_rcv_process
	)

VLIB_NODE_FUNCTION_MULTIARCH	(	tcp4_listen_node	,
		tcp4_listen
	)

VLIB_NODE_FUNCTION_MULTIARCH	(	tcp6_listen_node	,
		tcp6_listen
	)

VLIB_NODE_FUNCTION_MULTIARCH	(	tcp4_input_node	,
		tcp4_input
	)

VLIB_NODE_FUNCTION_MULTIARCH	(	tcp6_input_node	,
		tcp6_input
	)

Variable Documentation

vlib_node_registration_t tcp4_established_node

Initial value:

=
{
  .function = tcp4_established,
  .name = "tcp4-established",
  
  .vector_size = sizeof (u32),
  .n_errors = TCP_N_ERROR,
  .error_strings = tcp_error_strings,
  .n_next_nodes = TCP_ESTABLISHED_N_NEXT,
  .next_nodes =
  {
#define _(s,n) 
    foreach_tcp_state_next

  },
}

(constructor) VLIB_REGISTER_NODE (tcp4_established_node)

Definition at line 78 of file tcp_input.c.

vlib_node_registration_t tcp4_input_node

Initial value:

=
{
  .function = tcp4_input,
  .name = "tcp4-input",
  
  .vector_size = sizeof (u32),
  .n_errors = TCP_N_ERROR,
  .error_strings = tcp_error_strings,
  .n_next_nodes = TCP_INPUT_N_NEXT,
  .next_nodes =
  {
#define _(s,n) 
    foreach_tcp4_input_next

  },
  .format_buffer = format_tcp_header,
  .format_trace = format_tcp_rx_trace,
}

(constructor) VLIB_REGISTER_NODE (tcp4_input_node)

Definition at line 2039 of file tcp_input.c.

vlib_node_registration_t tcp4_listen_node

Initial value:

=
{
  .function = tcp4_listen,
  .name = "tcp4-listen",
  
  .vector_size = sizeof (u32),
  .n_errors = TCP_N_ERROR,
  .error_strings = tcp_error_strings,
  .n_next_nodes = TCP_LISTEN_N_NEXT,
  .next_nodes =
  {
#define _(s,n) 
    foreach_tcp_state_next

  },
}

(constructor) VLIB_REGISTER_NODE (tcp4_listen_node)

Definition at line 1833 of file tcp_input.c.

vlib_node_registration_t tcp4_rcv_process_node

Initial value:

=
{
  .function = tcp4_rcv_process,
  .name = "tcp4-rcv-process",
  
  .vector_size = sizeof (u32),
  .n_errors = TCP_N_ERROR,
  .error_strings = tcp_error_strings,
  .n_next_nodes = TCP_RCV_PROCESS_N_NEXT,
  .next_nodes =
  {
#define _(s,n) 
    foreach_tcp_state_next

  },
}

(constructor) VLIB_REGISTER_NODE (tcp4_rcv_process_node)

Definition at line 1792 of file tcp_input.c.

vlib_node_registration_t tcp4_syn_sent_node

Initial value:

=
{
  .function = tcp4_syn_sent,
  .name = "tcp4-syn-sent",
  
  .vector_size = sizeof (u32),
  .n_errors = TCP_N_ERROR,
  .error_strings = tcp_error_strings,
  .n_next_nodes = TCP_SYN_SENT_N_NEXT,
  .next_nodes =
  {
#define _(s,n) 
    foreach_tcp_state_next

  },
}

(constructor) VLIB_REGISTER_NODE (tcp4_syn_sent_node)

Definition at line 1178 of file tcp_input.c.

vlib_node_registration_t tcp6_established_node

Initial value:

=
{
  .function = tcp6_established,
  .name = "tcp6-established",
  
  .vector_size = sizeof (u32),
  .n_errors = TCP_N_ERROR,
  .error_strings = tcp_error_strings,
  .n_next_nodes = TCP_ESTABLISHED_N_NEXT,
  .next_nodes =
  {
#define _(s,n) 
    foreach_tcp_state_next

  },
}

(constructor) VLIB_REGISTER_NODE (tcp6_established_node)

Definition at line 79 of file tcp_input.c.

vlib_node_registration_t tcp6_input_node

Initial value:

=
{
  .function = tcp6_input,
  .name = "tcp6-input",
  
  .vector_size = sizeof (u32),
  .n_errors = TCP_N_ERROR,
  .error_strings = tcp_error_strings,
  .n_next_nodes = TCP_INPUT_N_NEXT,
  .next_nodes =
  {
#define _(s,n) 
    foreach_tcp6_input_next

  },
  .format_buffer = format_tcp_header,
  .format_trace = format_tcp_rx_trace,
}

(constructor) VLIB_REGISTER_NODE (tcp6_input_node)

Definition at line 2040 of file tcp_input.c.

vlib_node_registration_t tcp6_listen_node

Initial value:

=
{
  .function = tcp6_listen,
  .name = "tcp6-listen",
  
  .vector_size = sizeof (u32),
  .n_errors = TCP_N_ERROR,
  .error_strings = tcp_error_strings,
  .n_next_nodes = TCP_LISTEN_N_NEXT,
  .next_nodes =
  {
#define _(s,n) 
    foreach_tcp_state_next

  },
}

(constructor) VLIB_REGISTER_NODE (tcp6_listen_node)

Definition at line 1834 of file tcp_input.c.

vlib_node_registration_t tcp6_rcv_process_node

Initial value:

=
{
  .function = tcp6_rcv_process,
  .name = "tcp6-rcv-process",
  
  .vector_size = sizeof (u32),
  .n_errors = TCP_N_ERROR,
  .error_strings = tcp_error_strings,
  .n_next_nodes = TCP_RCV_PROCESS_N_NEXT,
  .next_nodes =
  {
#define _(s,n) 
    foreach_tcp_state_next

  },
}

(constructor) VLIB_REGISTER_NODE (tcp6_rcv_process_node)

Definition at line 1813 of file tcp_input.c.

vlib_node_registration_t tcp6_syn_sent_node

Initial value:

=
{
  .function = tcp6_syn_sent_rcv,
  .name = "tcp6-syn-sent",
  
  .vector_size = sizeof (u32),
  .n_errors = TCP_N_ERROR,
  .error_strings = tcp_error_strings,
  .n_next_nodes = TCP_SYN_SENT_N_NEXT,
  .next_nodes =
  {
#define _(s,n) 
    foreach_tcp_state_next

  }
,}

(constructor) VLIB_REGISTER_NODE (tcp6_syn_sent_node)

Definition at line 1179 of file tcp_input.c.

char* tcp_error_strings[]

static

Initial value:

= {
#define tcp_error(n,s) 


}

Definition at line 22 of file tcp_input.c.