IPv6 Reassembly. More...

Include dependency graph for ip6_reassembly.c:

Data Structures
struct	ip6_reass_key_t

struct	ip6_reass_t

struct	ip6_reass_per_thread_t

struct	ip6_reass_main_t

struct	ip6_reass_range_trace_t

struct	ip6_reass_trace_t

struct	ip6_rehash_cb_ctx

Macros
#define	MSEC_PER_SEC 1000

#define	IP6_REASS_TIMEOUT_DEFAULT_MS 100

#define	IP6_REASS_EXPIRE_WALK_INTERVAL_DEFAULT_MS 10000

#define	IP6_REASS_MAX_REASSEMBLIES_DEFAULT 1024

#define	IP6_REASS_HT_LOAD_FACTOR (0.75)

Enumerations
enum	ip6_reass_next_t { IP6_REASSEMBLY_NEXT_INPUT, IP6_REASSEMBLY_NEXT_DROP, IP6_REASSEMBLY_NEXT_ICMP_ERROR, IP6_REASSEMBLY_N_NEXT }

enum	ip6_reass_trace_operation_e { RANGE_NEW, RANGE_OVERLAP, ICMP_ERROR_RT_EXCEEDED, ICMP_ERROR_FL_TOO_BIG, ICMP_ERROR_FL_NOT_MULT_8, FINALIZE }

enum	ip6_reass_event_t { IP6_EVENT_CONFIG_CHANGED = 1 }

Functions
static u32	ip6_reass_buffer_get_data_offset_no_check (vlib_buffer_t *b)

static u32	ip6_reass_buffer_get_data_offset (vlib_buffer_t *b)

static u16	ip6_reass_buffer_get_data_len_no_check (vlib_buffer_t *b)

static u16	ip6_reass_buffer_get_data_len (vlib_buffer_t *b)

static void	ip6_reass_trace_details (vlib_main_t vm, u32 bi, ip6_reass_range_trace_t trace)

static u8 *	format_ip6_reass_range_trace (u8 s, va_list args)

static u8 *	format_ip6_reass_trace (u8 s, va_list args)

static void	ip6_reass_add_trace (vlib_main_t vm, vlib_node_runtime_t node, ip6_reass_main_t rm, ip6_reass_t reass, u32 bi, ip6_reass_trace_operation_e action, u32 size_diff)

static void	ip6_reass_free (ip6_reass_main_t rm, ip6_reass_per_thread_t rt, ip6_reass_t *reass)

static void	ip6_reass_drop_all (vlib_main_t vm, ip6_reass_main_t rm, ip6_reass_t reass, u32 *vec_drop_bi)

static void	ip6_reass_on_timeout (vlib_main_t vm, vlib_node_runtime_t node, ip6_reass_main_t rm, ip6_reass_t reass, u32 icmp_bi, u32 *vec_timeout)

static ip6_reass_t *	ip6_reass_find_or_create (vlib_main_t vm, vlib_node_runtime_t node, ip6_reass_main_t rm, ip6_reass_per_thread_t rt, ip6_reass_key_t k, u32 icmp_bi, u32 **vec_timeout)

static void	ip6_reass_finalize (vlib_main_t vm, vlib_node_runtime_t node, ip6_reass_main_t rm, ip6_reass_per_thread_t rt, ip6_reass_t reass, u32 bi0, u32 next0, vlib_error_t error0, u32 **vec_drop_compress, bool is_feature)

static u32	ip6_reass_get_buffer_chain_length (vlib_main_t vm, vlib_buffer_t b)

static void	ip6_reass_insert_range_in_chain (vlib_main_t vm, ip6_reass_main_t rm, ip6_reass_per_thread_t rt, ip6_reass_t reass, u32 prev_range_bi, u32 new_next_bi)

static void	ip6_reass_update (vlib_main_t vm, vlib_node_runtime_t node, ip6_reass_main_t rm, ip6_reass_per_thread_t rt, ip6_reass_t reass, u32 bi0, u32 next0, vlib_error_t error0, ip6_frag_hdr_t frag_hdr, u32 vec_drop_overlap, u32 *vec_drop_compress, bool is_feature)

static bool	ip6_reass_verify_upper_layer_present (vlib_node_runtime_t node, vlib_buffer_t b, ip6_frag_hdr_t *frag_hdr)

static bool	ip6_reass_verify_fragment_multiple_8 (vlib_main_t vm, vlib_node_runtime_t node, vlib_buffer_t b, ip6_frag_hdr_t frag_hdr)

static bool	ip6_reass_verify_packet_size_lt_64k (vlib_main_t vm, vlib_node_runtime_t node, vlib_buffer_t b, ip6_frag_hdr_t frag_hdr)

static uword	ip6_reassembly_inline (vlib_main_t vm, vlib_node_runtime_t node, vlib_frame_t *frame, bool is_feature)

static uword	ip6_reassembly (vlib_main_t vm, vlib_node_runtime_t node, vlib_frame_t *frame)

	VLIB_NODE_FUNCTION_MULTIARCH (ip6_reass_node, ip6_reassembly)

static uword	ip6_reassembly_feature (vlib_main_t vm, vlib_node_runtime_t node, vlib_frame_t *frame)

	VLIB_NODE_FUNCTION_MULTIARCH (ip6_reass_node_feature, ip6_reassembly_feature)

	VNET_FEATURE_INIT (ip6_reassembly_feature, static)

static u32	ip6_reass_get_nbuckets ()

static void	ip6_rehash_cb (clib_bihash_kv_48_8_t kv, void _ctx)

static void	ip6_reass_set_params (u32 timeout_ms, u32 max_reassemblies, u32 expire_walk_interval_ms)

vnet_api_error_t	ip6_reass_set (u32 timeout_ms, u32 max_reassemblies, u32 expire_walk_interval_ms)
	set ip6 reassembly configuration More...

vnet_api_error_t	ip6_reass_get (u32 timeout_ms, u32 max_reassemblies, u32 *expire_walk_interval_ms)
	get ip6 reassembly configuration More...

static clib_error_t *	ip6_reass_init_function (vlib_main_t *vm)

static uword	ip6_reass_walk_expired (vlib_main_t vm, vlib_node_runtime_t node, vlib_frame_t *f)

static u8 *	format_ip6_reass_key (u8 s, va_list args)

static u8 *	format_ip6_reass (u8 s, va_list args)

static clib_error_t *	show_ip6_reass (vlib_main_t vm, unformat_input_t input, CLIB_UNUSED(vlib_cli_command_t *lmd))

vnet_api_error_t	ip6_reass_enable_disable (u32 sw_if_index, u8 enable_disable)

Variables
static vlib_node_registration_t	ip6_reass_node
	(constructor) VLIB_REGISTER_NODE (ip6_reass_node) More...

ip6_reass_main_t	ip6_reass_main

static char *	ip6_reassembly_error_strings []

static vlib_node_registration_t	ip6_reass_node_feature
	(constructor) VLIB_REGISTER_NODE (ip6_reass_node_feature) More...

static vlib_node_registration_t	ip6_reass_expire_node
	(constructor) VLIB_REGISTER_NODE (ip6_reass_expire_node) More...

static vlib_cli_command_t	show_ip6_reassembly_cmd
	(constructor) VLIB_CLI_COMMAND (show_ip6_reassembly_cmd) More...

Detailed Description

IPv6 Reassembly.

This file contains the source code for IPv6 reassembly.

Definition in file ip6_reassembly.c.

Macro Definition Documentation

#define IP6_REASS_EXPIRE_WALK_INTERVAL_DEFAULT_MS 10000

Definition at line 31 of file ip6_reassembly.c.

#define IP6_REASS_HT_LOAD_FACTOR (0.75)

Definition at line 33 of file ip6_reassembly.c.

#define IP6_REASS_MAX_REASSEMBLIES_DEFAULT 1024

Definition at line 32 of file ip6_reassembly.c.

#define IP6_REASS_TIMEOUT_DEFAULT_MS 100

Definition at line 30 of file ip6_reassembly.c.

#define MSEC_PER_SEC 1000

Definition at line 29 of file ip6_reassembly.c.

Enumeration Type Documentation

enum ip6_reass_event_t

Enumerator
IP6_EVENT_CONFIG_CHANGED

Definition at line 1110 of file ip6_reassembly.c.

enum ip6_reass_next_t

Enumerator
IP6_REASSEMBLY_NEXT_INPUT
IP6_REASSEMBLY_NEXT_DROP
IP6_REASSEMBLY_NEXT_ICMP_ERROR
IP6_REASSEMBLY_N_NEXT

Definition at line 146 of file ip6_reassembly.c.

enum ip6_reass_trace_operation_e

Enumerator
RANGE_NEW
RANGE_OVERLAP
ICMP_ERROR_RT_EXCEEDED
ICMP_ERROR_FL_TOO_BIG
ICMP_ERROR_FL_NOT_MULT_8
FINALIZE

Definition at line 154 of file ip6_reassembly.c.

Function Documentation

static u8* format_ip6_reass	(	u8 *	s,
		va_list *	args
	)

static

Definition at line 1424 of file ip6_reassembly.c.

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static u8* format_ip6_reass_key	(	u8 *	s,
		va_list *	args
	)

static

Definition at line 1414 of file ip6_reassembly.c.

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static u8* format_ip6_reass_range_trace	(	u8 *	s,
		va_list *	args
	)

static

Definition at line 200 of file ip6_reassembly.c.

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static u8* format_ip6_reass_trace	(	u8 *	s,
		va_list *	args
	)

static

Definition at line 210 of file ip6_reassembly.c.

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static void ip6_reass_add_trace	(	vlib_main_t *	vm,
		vlib_node_runtime_t *	node,
		ip6_reass_main_t *	rm,
		ip6_reass_t *	reass,
		u32	bi,
		ip6_reass_trace_operation_e	action,
		u32	size_diff
	)

static

Definition at line 252 of file ip6_reassembly.c.

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static u16 ip6_reass_buffer_get_data_len ( vlib_buffer_t * b )

inlinestatic

Definition at line 81 of file ip6_reassembly.c.

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static u16 ip6_reass_buffer_get_data_len_no_check ( vlib_buffer_t * b )

inlinestatic

Definition at line 73 of file ip6_reassembly.c.

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static u32 ip6_reass_buffer_get_data_offset ( vlib_buffer_t * b )

inlinestatic

Definition at line 65 of file ip6_reassembly.c.

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static u32 ip6_reass_buffer_get_data_offset_no_check ( vlib_buffer_t * b )

inlinestatic

Definition at line 58 of file ip6_reassembly.c.

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static void ip6_reass_drop_all	(	vlib_main_t *	vm,
		ip6_reass_main_t *	rm,
		ip6_reass_t *	reass,
		u32 **	vec_drop_bi
	)

inlinestatic

Definition at line 302 of file ip6_reassembly.c.

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vnet_api_error_t ip6_reass_enable_disable	(	u32	sw_if_index,
		u8	enable_disable
	)

Definition at line 1514 of file ip6_reassembly.c.

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static void ip6_reass_finalize	(	vlib_main_t *	vm,
		vlib_node_runtime_t *	node,
		ip6_reass_main_t *	rm,
		ip6_reass_per_thread_t *	rt,
		ip6_reass_t *	reass,
		u32 *	bi0,
		u32 *	next0,
		vlib_error_t *	error0,
		u32 **	vec_drop_compress,
		bool	is_feature
	)

inlinestatic

Definition at line 437 of file ip6_reassembly.c.

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static ip6_reass_t* ip6_reass_find_or_create	(	vlib_main_t *	vm,
		vlib_node_runtime_t *	node,
		ip6_reass_main_t *	rm,
		ip6_reass_per_thread_t *	rt,
		ip6_reass_key_t *	k,
		u32 *	icmp_bi,
		u32 **	vec_timeout
	)

inlinestatic

Definition at line 368 of file ip6_reassembly.c.

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static void ip6_reass_free	(	ip6_reass_main_t *	rm,
		ip6_reass_per_thread_t *	rt,
		ip6_reass_t *	reass
	)

inlinestatic

Definition at line 286 of file ip6_reassembly.c.

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vnet_api_error_t ip6_reass_get	(	u32 *	timeout_ms,
		u32 *	max_reassemblies,
		u32 *	expire_walk_interval_ms
	)

get ip6 reassembly configuration

Definition at line 1179 of file ip6_reassembly.c.

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static u32 ip6_reass_get_buffer_chain_length	(	vlib_main_t *	vm,
		vlib_buffer_t *	b
	)

inlinestatic

Definition at line 613 of file ip6_reassembly.c.

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static u32 ip6_reass_get_nbuckets ( )

static

Definition at line 1094 of file ip6_reassembly.c.

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static clib_error_t* ip6_reass_init_function ( vlib_main_t * vm )

static

Definition at line 1189 of file ip6_reassembly.c.

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static void ip6_reass_insert_range_in_chain	(	vlib_main_t *	vm,
		ip6_reass_main_t *	rm,
		ip6_reass_per_thread_t *	rt,
		ip6_reass_t *	reass,
		u32	prev_range_bi,
		u32	new_next_bi
	)

inlinestatic

Definition at line 632 of file ip6_reassembly.c.

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static void ip6_reass_on_timeout	(	vlib_main_t *	vm,
		vlib_node_runtime_t *	node,
		ip6_reass_main_t *	rm,
		ip6_reass_t *	reass,
		u32 *	icmp_bi,
		u32 **	vec_timeout
	)

inlinestatic

Definition at line 332 of file ip6_reassembly.c.

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vnet_api_error_t ip6_reass_set	(	u32	timeout_ms,
		u32	max_reassemblies,
		u32	expire_walk_interval_ms
	)

set ip6 reassembly configuration

Definition at line 1142 of file ip6_reassembly.c.

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static void ip6_reass_set_params	(	u32	timeout_ms,
		u32	max_reassemblies,
		u32	expire_walk_interval_ms
	)

static

Definition at line 1132 of file ip6_reassembly.c.

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static void ip6_reass_trace_details	(	vlib_main_t *	vm,
		u32	bi,
		ip6_reass_range_trace_t *	trace
	)

static

Definition at line 187 of file ip6_reassembly.c.

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static void ip6_reass_update	(	vlib_main_t *	vm,
		vlib_node_runtime_t *	node,
		ip6_reass_main_t *	rm,
		ip6_reass_per_thread_t *	rt,
		ip6_reass_t *	reass,
		u32 *	bi0,
		u32 *	next0,
		vlib_error_t *	error0,
		ip6_frag_hdr_t *	frag_hdr,
		u32 **	vec_drop_overlap,
		u32 **	vec_drop_compress,
		bool	is_feature
	)

inlinestatic

Definition at line 660 of file ip6_reassembly.c.

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static bool ip6_reass_verify_fragment_multiple_8	(	vlib_main_t *	vm,
		vlib_node_runtime_t *	node,
		vlib_buffer_t *	b,
		ip6_frag_hdr_t *	frag_hdr
	)

inlinestatic

Definition at line 807 of file ip6_reassembly.c.

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static bool ip6_reass_verify_packet_size_lt_64k	(	vlib_main_t *	vm,
		vlib_node_runtime_t *	node,
		vlib_buffer_t *	b,
		ip6_frag_hdr_t *	frag_hdr
	)

inlinestatic

Definition at line 829 of file ip6_reassembly.c.

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static bool ip6_reass_verify_upper_layer_present	(	vlib_node_runtime_t *	node,
		vlib_buffer_t *	b,
		ip6_frag_hdr_t *	frag_hdr
	)

inlinestatic

Definition at line 785 of file ip6_reassembly.c.

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static uword ip6_reass_walk_expired	(	vlib_main_t *	vm,
		vlib_node_runtime_t *	node,
		vlib_frame_t *	f
	)

static

Definition at line 1236 of file ip6_reassembly.c.

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static uword ip6_reassembly	(	vlib_main_t *	vm,
		vlib_node_runtime_t *	node,
		vlib_frame_t *	frame
	)

static

Definition at line 1031 of file ip6_reassembly.c.

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static uword ip6_reassembly_feature	(	vlib_main_t *	vm,
		vlib_node_runtime_t *	node,
		vlib_frame_t *	frame
	)

static

Definition at line 1058 of file ip6_reassembly.c.

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static uword ip6_reassembly_inline	(	vlib_main_t *	vm,
		vlib_node_runtime_t *	node,
		vlib_frame_t *	frame,
		bool	is_feature
	)

inlinestatic

Definition at line 852 of file ip6_reassembly.c.

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static void ip6_rehash_cb	(	clib_bihash_kv_48_8_t *	kv,
		void *	_ctx
	)

static

Definition at line 1122 of file ip6_reassembly.c.

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static clib_error_t* show_ip6_reass	(	vlib_main_t *	vm,
		unformat_input_t *	input,
		CLIB_UNUSED(vlib_cli_command_t *lmd)
	)

static

Definition at line 1460 of file ip6_reassembly.c.

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VLIB_NODE_FUNCTION_MULTIARCH	(	ip6_reass_node	,
		ip6_reassembly
	)

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VLIB_NODE_FUNCTION_MULTIARCH	(	ip6_reass_node_feature	,
		ip6_reassembly_feature
	)

VNET_FEATURE_INIT	(	ip6_reassembly_feature	,
		static
	)

Variable Documentation

static vlib_node_registration_t ip6_reass_expire_node

static

Initial value:

= {
    .function = ip6_reass_walk_expired,
    .format_trace = format_ip6_reass_trace,
    .type = VLIB_NODE_TYPE_PROCESS,
    .name = "ip6-reassembly-expire-walk",
    .n_errors = ARRAY_LEN (ip6_reassembly_error_strings),
    .error_strings = ip6_reassembly_error_strings,
}

(constructor) VLIB_REGISTER_NODE (ip6_reass_expire_node)

Definition at line 1398 of file ip6_reassembly.c.

ip6_reass_main_t ip6_reass_main

Definition at line 144 of file ip6_reassembly.c.

static vlib_node_registration_t ip6_reass_node

static

Initial value:

= {
    .function = ip6_reassembly,
    .name = "ip6-reassembly",
    .vector_size = sizeof (u32),
    .format_trace = format_ip6_reass_trace,
    .n_errors = ARRAY_LEN (ip6_reassembly_error_strings),
    .error_strings = ip6_reassembly_error_strings,
    .n_next_nodes = IP6_REASSEMBLY_N_NEXT,
    .next_nodes =
        {
                [IP6_REASSEMBLY_NEXT_INPUT] = "ip6-input",
                [IP6_REASSEMBLY_NEXT_DROP] = "ip6-drop",
                [IP6_REASSEMBLY_NEXT_ICMP_ERROR] = "ip6-icmp-error",
        },
}

(constructor) VLIB_REGISTER_NODE (ip6_reass_node)

Definition at line 35 of file ip6_reassembly.c.

vlib_node_registration_t ip6_reass_node_feature

static

Initial value:

= {
    .function = ip6_reassembly_feature,
    .name = "ip6-reassembly-feature",
    .vector_size = sizeof (u32),
    .format_trace = format_ip6_reass_trace,
    .n_errors = ARRAY_LEN (ip6_reassembly_error_strings),
    .error_strings = ip6_reassembly_error_strings,
    .n_next_nodes = IP6_REASSEMBLY_N_NEXT,
    .next_nodes =
        {
                [IP6_REASSEMBLY_NEXT_INPUT] = "ip6-input",
                [IP6_REASSEMBLY_NEXT_DROP] = "ip6-drop",
                [IP6_REASSEMBLY_NEXT_ICMP_ERROR] = "ip6-icmp-error",
        },
}

(constructor) VLIB_REGISTER_NODE (ip6_reass_node_feature)

Definition at line 1065 of file ip6_reassembly.c.

char* ip6_reassembly_error_strings[]

static

Initial value:

= {
#define _(sym, string) 
  foreach_ip6_error
}

Definition at line 1024 of file ip6_reassembly.c.

vlib_cli_command_t show_ip6_reassembly_cmd

static

Initial value:

= {
    .path = "show ip6-reassembly",
    .short_help = "show ip6-reassembly [details]",
    .function = show_ip6_reass,
}

(constructor) VLIB_CLI_COMMAND (show_ip6_reassembly_cmd)

Definition at line 1506 of file ip6_reassembly.c.

Data Structures

Macros

Enumerations

Functions

Variables

Detailed Description

Macro Definition Documentation

Enumeration Type Documentation

Function Documentation

Variable Documentation