29 #define MSEC_PER_SEC 1000 30 #define IP4_REASS_TIMEOUT_DEFAULT_MS 100 31 #define IP4_REASS_EXPIRE_WALK_INTERVAL_DEFAULT_MS 10000 // 10 seconds default 32 #define IP4_REASS_MAX_REASSEMBLIES_DEFAULT 1024 33 #define IP4_REASS_MAX_REASSEMBLY_LENGTH_DEFAULT 3 34 #define IP4_REASS_HT_LOAD_FACTOR (0.75) 36 #define IP4_REASS_DEBUG_BUFFERS 0 37 #if IP4_REASS_DEBUG_BUFFERS 38 #define IP4_REASS_DEBUG_BUFFER(bi, what) \ 42 printf (#what "buffer %u", _bi); \ 43 vlib_buffer_t *_b = vlib_get_buffer (vm, _bi); \ 44 while (_b->flags & VLIB_BUFFER_NEXT_PRESENT) \ 46 _bi = _b->next_buffer; \ 47 printf ("[%u]", _bi); \ 48 _b = vlib_get_buffer (vm, _bi); \ 55 #define IP4_REASS_DEBUG_BUFFER(...) 107 return vnb->
ip.reass.range_first - vnb->
ip.reass.fragment_first;
114 return clib_min (vnb->
ip.reass.range_last, vnb->
ip.reass.fragment_last) -
184 #ifndef CLIB_MARCH_VARIANT 261 s =
format (s,
"first bi: %u, data len: %u, ip/fragment[%u, %u]",
293 ip4_reass_trace_operation_e action,
u32 size_diff)
311 printf (
"%.*s\n",
vec_len (s), s);
325 clib_bihash_add_del_16_8 (&rm->
hash, &kv, 0);
338 while (~0 != range_bi)
347 if (b->
flags & VLIB_BUFFER_NEXT_PRESENT)
350 b->
flags &= ~VLIB_BUFFER_NEXT_PRESENT;
357 range_bi = range_vnb->
ip.reass.next_range_bi;
362 u32 n_left_to_next, *to_next, next_index;
371 while (
vec_len (to_free) > 0 && n_left_to_next > 0)
381 to_next, n_left_to_next,
402 if (!clib_bihash_search_16_8
469 u32 total_length = 0;
473 u32 tmp_bi = sub_chain_bi;
477 if (!(vnb->
ip.reass.range_first >= vnb->
ip.reass.fragment_first) &&
478 !(vnb->
ip.reass.range_last > vnb->
ip.reass.fragment_first))
513 u32 to_be_freed_bi = tmp_bi;
515 if (!(tmp->
flags & VLIB_BUFFER_NEXT_PRESENT))
519 tmp->
flags &= ~VLIB_BUFFER_NEXT_PRESENT;
536 last_b->
flags |= VLIB_BUFFER_NEXT_PRESENT;
540 if (keep_data <= tmp->current_length)
548 if (!(tmp->
flags & VLIB_BUFFER_NEXT_PRESENT))
554 if (tmp->
flags & VLIB_BUFFER_NEXT_PRESENT)
566 u32 to_be_freed_bi = tmp_bi;
571 if (tmp->
flags & VLIB_BUFFER_NEXT_PRESENT)
573 tmp->
flags &= ~VLIB_BUFFER_NEXT_PRESENT;
591 while (~0 != sub_chain_bi);
597 last_b->
flags &= ~VLIB_BUFFER_NEXT_PRESENT;
599 if (total_length < first_b->current_length)
604 first_b->
flags |= VLIB_BUFFER_TOTAL_LENGTH_VALID;
615 first_b->
flags &= ~VLIB_BUFFER_EXT_HDR_VALID;
630 if (b->
flags & VLIB_BUFFER_NEXT_PRESENT)
639 printf (
"%.*s\n",
vec_len (s), s);
656 *error0 = IP4_ERROR_NONE;
667 u32 prev_range_bi,
u32 new_next_bi)
671 if (~0 != prev_range_bi)
675 new_next_vnb->
ip.reass.next_range_bi = prev_vnb->
ip.reass.next_range_bi;
676 prev_vnb->
ip.reass.next_range_bi = new_next_bi;
682 new_next_vnb->
ip.reass.next_range_bi = reass->
first_bi;
687 if (!(vnb->
ip.reass.range_first >= vnb->
ip.reass.fragment_first) &&
688 !(vnb->
ip.reass.range_last > vnb->
ip.reass.fragment_first))
705 if (~0 != prev_range_bi)
709 if (!(prev_vnb->
ip.reass.next_range_bi == discard_bi))
713 prev_vnb->
ip.reass.next_range_bi = discard_vnb->
ip.reass.next_range_bi;
717 reass->
first_bi = discard_vnb->
ip.reass.next_range_bi;
720 if (!(vnb->
ip.reass.range_first >= vnb->
ip.reass.fragment_first) &&
721 !(vnb->
ip.reass.range_last > vnb->
ip.reass.fragment_first))
728 u32 to_be_freed_bi = discard_bi;
734 if (discard_b->
flags & VLIB_BUFFER_NEXT_PRESENT)
736 discard_b->
flags &= ~VLIB_BUFFER_NEXT_PRESENT;
770 const u32 fragment_length =
772 const u32 fragment_last = fragment_first + fragment_length - 1;
773 fvnb->
ip.reass.fragment_first = fragment_first;
774 fvnb->
ip.reass.fragment_last = fragment_last;
777 u32 prev_range_bi = ~0;
778 fvnb->
ip.reass.range_first = fragment_first;
779 fvnb->
ip.reass.range_last = fragment_last;
780 fvnb->
ip.reass.next_range_bi = ~0;
805 fvnb->
ip.reass.estimated_mtu);
806 while (~0 != candidate_range_bi)
810 if (fragment_first > candidate_vnb->
ip.reass.range_last)
813 prev_range_bi = candidate_range_bi;
814 candidate_range_bi = candidate_vnb->
ip.reass.next_range_bi;
815 if (candidate_vnb->
ip.reass.range_last < fragment_last &&
816 ~0 == candidate_range_bi)
821 prev_range_bi, *bi0);
831 if (fragment_last < candidate_vnb->
ip.reass.range_first)
845 if (fragment_first >= candidate_vnb->
ip.reass.range_first &&
846 fragment_last <= candidate_vnb->
ip.reass.range_last)
856 int discard_candidate = 0;
857 if (fragment_first < candidate_vnb->
ip.reass.range_first)
860 fragment_last - candidate_vnb->
ip.reass.range_first + 1;
863 candidate_vnb->
ip.reass.range_first += overlap;
877 prev_range_bi, *bi0);
886 discard_candidate = 1;
889 else if (fragment_last > candidate_vnb->
ip.reass.range_last)
892 candidate_vnb->
ip.reass.range_last - fragment_first + 1;
895 fvnb->
ip.reass.range_first += overlap;
896 if (~0 != candidate_vnb->
ip.reass.next_range_bi)
898 prev_range_bi = candidate_range_bi;
900 candidate_vnb->
ip.reass.next_range_bi;
919 discard_candidate = 1;
924 discard_candidate = 1;
926 if (discard_candidate)
928 u32 next_range_bi = candidate_vnb->
ip.reass.next_range_bi;
938 if (~0 != next_range_bi)
940 candidate_range_bi = next_range_bi;
948 prev_range_bi, *bi0);
986 *error0 = IP4_ERROR_REASS_DUPLICATE_FRAGMENT;
998 u32 n_left_from, n_left_to_next, *to_next, next_index;
1005 while (n_left_from > 0)
1009 while (n_left_from > 0 && n_left_to_next > 0)
1014 u32 error0 = IP4_ERROR_NONE;
1035 const u32 fragment_length =
1037 const u32 fragment_last = fragment_first + fragment_length - 1;
1038 if (fragment_first > fragment_last || fragment_first + fragment_length > UINT16_MAX - 20 || (fragment_length < 8 &&
ip4_get_fragment_more (ip0)))
1041 error0 = IP4_ERROR_REASS_MALFORMED_PACKET;
1065 reass.owner_feature_thread_index =
1074 (vm, node, rm, rt, reass, &bi0, &next0,
1075 &error0, is_custom_app))
1082 IP4_ERROR_REASS_FRAGMENT_CHAIN_TOO_LONG,
1090 IP4_ERROR_REASS_NO_BUF,
1099 IP4_ERROR_REASS_INTERNAL_ERROR,
1110 error0 = IP4_ERROR_REASS_LIMIT_REACHED;
1121 n_left_to_next -= 1;
1122 if (is_feature && IP4_ERROR_NONE == error0)
1128 to_next, n_left_to_next,
1146 #define _(sym, string) string, 1160 .name =
"ip4-reassembly",
1161 .vector_size =
sizeof (
u32),
1163 .n_errors =
ARRAY_LEN (ip4_reassembly_error_strings),
1186 .name =
"ip4-reassembly-feature",
1187 .vector_size =
sizeof (
u32),
1189 .n_errors =
ARRAY_LEN (ip4_reassembly_error_strings),
1203 .arc_name =
"ip4-unicast",
1204 .node_name =
"ip4-reassembly-feature",
1206 "ipsec4-input-feature"),
1211 #ifndef CLIB_MARCH_VARIANT 1221 for (i = 0; i < 31; i++)
1222 if ((1 << i) >= nbuckets)
1241 #ifndef CLIB_MARCH_VARIANT 1246 if (clib_bihash_add_del_16_8 (ctx->
new_hash, kv, 1))
1254 u32 max_reassembly_length,
u32 expire_walk_interval_ms)
1265 u32 max_reassembly_length,
u32 expire_walk_interval_ms)
1269 expire_walk_interval_ms);
1274 if (ip4_reass_main.
max_reass_n > 0 && new_nbuckets > old_nbuckets)
1276 clib_bihash_16_8_t new_hash;
1281 clib_bihash_init_16_8 (&new_hash,
"ip4-reass", new_nbuckets,
1282 new_nbuckets * 1024);
1283 clib_bihash_foreach_key_value_pair_16_8 (&ip4_reass_main.
hash,
1287 clib_bihash_free_16_8 (&new_hash);
1292 clib_bihash_free_16_8 (&ip4_reass_main.
hash);
1294 sizeof (ip4_reass_main.
hash));
1303 u32 * max_reassembly_length,
u32 * expire_walk_interval_ms)
1341 clib_bihash_init_16_8 (&rm->
hash,
"ip4-reass", nbuckets, nbuckets * 1024);
1363 uword event_type, *event_data = 0;
1387 int *pool_indexes_to_free =
NULL;
1389 uword thread_index = 0;
1392 for (thread_index = 0; thread_index < nthreads; ++thread_index)
1400 reass = pool_elt_at_index (rt->pool, index);
1401 if (now > reass->last_heard + rm->timeout)
1403 vec_add1 (pool_indexes_to_free, index);
1423 _vec_len (event_data) = 0;
1434 .name =
"ip4-reassembly-expire-walk",
1446 s =
format (s,
"xx_id: %u, src: %U, dst: %U, frag_id: %u, proto: %u",
1458 s =
format (s,
"ID: %lu, key: %U\n first_bi: %u, data_len: %u, " 1459 "last_packet_octet: %u, trace_op_counter: %u\n",
1469 s =
format (s,
" #%03u: range: [%u, %u], bi: %u, off: %d, len: %u, " 1470 "fragment[%u, %u]\n",
1471 counter, vnb->
ip.reass.range_first,
1472 vnb->
ip.reass.range_last, bi,
1475 vnb->
ip.reass.fragment_first, vnb->
ip.reass.fragment_last);
1476 if (b->
flags & VLIB_BUFFER_NEXT_PRESENT)
1498 bool details =
false;
1504 u32 sum_reass_n = 0;
1508 for (thread_index = 0; thread_index < nthreads; ++thread_index)
1516 vlib_cli_output (vm,
"%U", format_ip4_reass, vm, reass);
1525 (
long unsigned) sum_reass_n);
1527 "Maximum configured concurrent IP4 reassemblies per worker-thread: %lu\n",
1534 .path =
"show ip4-reassembly",
1535 .short_help =
"show ip4-reassembly [details]",
1540 #ifndef CLIB_MARCH_VARIANT 1545 "ip4-reassembly-feature", sw_if_index,
1546 enable_disable, 0, 0);
1551 #define foreach_ip4_reassembly_handoff_error \ 1552 _(CONGESTION_DROP, "congestion drop") 1557 #define _(sym,str) IP4_REASSEMBLY_HANDOFF_ERROR_##sym, 1564 #define _(sym,string) string, 1583 format (s,
"ip4-reassembly-handoff: next-worker %d",
1597 u32 n_enq, n_left_from, *from;
1606 ti = thread_indices;
1610 while (n_left_from > 0)
1614 reass.owner_feature_thread_index :
vnet_buffer (b[0])->ip.
1615 reass.owner_thread_index;
1619 && (b[0]->
flags & VLIB_BUFFER_IS_TRACED)))
1634 if (n_enq < frame->n_vectors)
1636 IP4_REASSEMBLY_HANDOFF_ERROR_CONGESTION_DROP,
1652 .name =
"ip4-reassembly-handoff",
1653 .vector_size =
sizeof (
u32),
1654 .n_errors =
ARRAY_LEN(ip4_reassembly_handoff_error_strings),
1681 .name =
"ip4-reass-feature-hoff",
1682 .vector_size =
sizeof (
u32),
1683 .n_errors =
ARRAY_LEN(ip4_reassembly_handoff_error_strings),
static ip4_reass_t * ip4_reass_find_or_create(vlib_main_t *vm, vlib_node_runtime_t *node, ip4_reass_main_t *rm, ip4_reass_per_thread_t *rt, ip4_reass_kv_t *kv, u8 *do_handoff)
#define vec_validate(V, I)
Make sure vector is long enough for given index (no header, unspecified alignment) ...
u32 flags
buffer flags: VLIB_BUFFER_FREE_LIST_INDEX_MASK: bits used to store free list index, VLIB_BUFFER_IS_TRACED: trace this buffer.
static vlib_cli_command_t trace
(constructor) VLIB_CLI_COMMAND (trace)
static_always_inline void clib_spinlock_unlock(clib_spinlock_t *p)
static_always_inline void clib_spinlock_lock(clib_spinlock_t *p)
static f64 vlib_process_wait_for_event_or_clock(vlib_main_t *vm, f64 dt)
Suspend a cooperative multi-tasking thread Waits for an event, or for the indicated number of seconds...
static void vlib_buffer_free(vlib_main_t *vm, u32 *buffers, u32 n_buffers)
Free buffers Frees the entire buffer chain for each buffer.
vnet_main_t * vnet_get_main(void)
vnet_api_error_t ip4_reass_set(u32 timeout_ms, u32 max_reassemblies, u32 max_reassembly_length, u32 expire_walk_interval_ms)
set ip4 reassembly configuration
u32 ip4_reass_expire_node_idx
#define pool_alloc(P, N)
Allocate N more free elements to pool (unspecified alignment).
static uword ip4_reassembly_inline(vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *frame, bool is_feature, bool is_custom_app)
static u8 * format_ip4_reass_trace(u8 *s, va_list *args)
#define clib_memcpy_fast(a, b, c)
#define IP4_REASS_EXPIRE_WALK_INTERVAL_DEFAULT_MS
static char * ip4_reassembly_error_strings[]
static f64 vlib_time_now(vlib_main_t *vm)
u32 vlib_frame_queue_main_init(u32 node_index, u32 frame_queue_nelts)
u16 current_length
Nbytes between current data and the end of this buffer.
#define vec_add1(V, E)
Add 1 element to end of vector (unspecified alignment).
static ip4_reass_rc_t ip4_reass_insert_range_in_chain(vlib_main_t *vm, ip4_reass_main_t *rm, ip4_reass_per_thread_t *rt, ip4_reass_t *reass, u32 prev_range_bi, u32 new_next_bi)
clib_memset(h->entries, 0, sizeof(h->entries[0])*entries)
u32 * fib_index_by_sw_if_index
Table index indexed by software interface.
#define foreach_ip4_reassembly_handoff_error
#define VLIB_NODE_FN(node)
vlib_error_t * errors
Vector of errors for this node.
static uword vlib_buffer_length_in_chain(vlib_main_t *vm, vlib_buffer_t *b)
Get length in bytes of the buffer chain.
#define pool_get(P, E)
Allocate an object E from a pool P (unspecified alignment).
ip4_reass_per_thread_t * per_thread_data
static void ip4_reass_trace_details(vlib_main_t *vm, u32 bi, ip4_reass_range_trace_t *trace)
#define vec_pop(V)
Returns last element of a vector and decrements its length.
static int ip4_get_fragment_offset_bytes(const ip4_header_t *i)
#define vec_reset_length(v)
Reset vector length to zero NULL-pointer tolerant.
vlib_node_registration_t ip4_reassembly_handoff_node
(constructor) VLIB_REGISTER_NODE (ip4_reassembly_handoff_node)
ip4_reassembly_handoff_error_t
#define pool_foreach(VAR, POOL, BODY)
Iterate through pool.
vl_api_interface_index_t sw_if_index
#define VLIB_INIT_FUNCTION(x)
static uword vlib_process_get_events(vlib_main_t *vm, uword **data_vector)
Return the first event type which has occurred and a vector of per-event data of that type...
static void ip4_rehash_cb(clib_bihash_kv_16_8_t *kv, void *_ctx)
struct vnet_buffer_opaque_t::@60::@62 ip
static void ip4_reass_free(ip4_reass_main_t *rm, ip4_reass_per_thread_t *rt, ip4_reass_t *reass)
static u16 ip4_reass_buffer_get_data_len(vlib_buffer_t *b)
u32 expire_walk_interval_ms
#define IP4_REASS_MAX_REASSEMBLY_LENGTH_DEFAULT
static uword ip4_reass_walk_expired(vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *f)
static void clib_spinlock_init(clib_spinlock_t *p)
vlib_error_t error
Error code for buffers to be enqueued to error handler.
static u32 vlib_buffer_chain_linearize(vlib_main_t *vm, vlib_buffer_t *b)
static u8 * format_ip4_reass_key(u8 *s, va_list *args)
#define pool_elt_at_index(p, i)
Returns pointer to element at given index.
static void vlib_process_signal_event(vlib_main_t *vm, uword node_index, uword type_opaque, uword data)
#define IP4_REASS_DEBUG_BUFFER(...)
static ip4_reass_rc_t ip4_reass_finalize(vlib_main_t *vm, vlib_node_runtime_t *node, ip4_reass_main_t *rm, ip4_reass_per_thread_t *rt, ip4_reass_t *reass, u32 *bi0, u32 *next0, u32 *error0, bool is_custom_app)
vlib_node_registration_t ip4_reassembly_feature_handoff_node
(constructor) VLIB_REGISTER_NODE (ip4_reassembly_feature_handoff_node)
static int ip4_get_fragment_offset(const ip4_header_t *i)
static void * vlib_buffer_get_current(vlib_buffer_t *b)
Get pointer to current data to process.
#define pool_put(P, E)
Free an object E in pool P.
static vlib_cli_command_t show_ip4_reassembly_cmd
(constructor) VLIB_CLI_COMMAND (show_ip4_reassembly_cmd)
ip4_reass_main_t ip4_reass_main
u32 node_index
Node index.
#define vlib_validate_buffer_enqueue_x1(vm, node, next_index, to_next, n_left_to_next, bi0, next0)
Finish enqueueing one buffer forward in the graph.
static void ip4_reass_set_params(u32 timeout_ms, u32 max_reassemblies, u32 max_reassembly_length, u32 expire_walk_interval_ms)
#define vlib_get_next_frame(vm, node, next_index, vectors, n_vectors_left)
Get pointer to next frame vector data by (vlib_node_runtime_t, next_index).
static u8 * format_ip4_reass_range_trace(u8 *s, va_list *args)
vlib_node_registration_t ip4_reass_node
(constructor) VLIB_REGISTER_NODE (ip4_reass_node)
static void vlib_node_increment_counter(vlib_main_t *vm, u32 node_index, u32 counter_index, u64 increment)
ip4_reass_trace_operation_e
#define foreach_ip4_error
static clib_error_t * ip4_reass_init_function(vlib_main_t *vm)
#define VLIB_REGISTER_NODE(x,...)
static u8 * format_ip4_reassembly_handoff_trace(u8 *s, va_list *args)
clib_bihash_16_8_t * new_hash
#define vec_free(V)
Free vector's memory (no header).
static_always_inline void vnet_feature_next(u32 *next0, vlib_buffer_t *b0)
ip4_reass_range_trace_t trace_range
#define clib_warning(format, args...)
VNET_FEATURE_INIT(ip4_reassembly_feature, static)
static void ip4_reass_add_trace(vlib_main_t *vm, vlib_node_runtime_t *node, ip4_reass_main_t *rm, ip4_reass_t *reass, u32 bi, ip4_reass_trace_operation_e action, u32 size_diff)
static clib_error_t * show_ip4_reass(vlib_main_t *vm, unformat_input_t *input, CLIB_UNUSED(vlib_cli_command_t *lmd))
static ip4_reass_rc_t ip4_reass_update(vlib_main_t *vm, vlib_node_runtime_t *node, ip4_reass_main_t *rm, ip4_reass_per_thread_t *rt, ip4_reass_t *reass, u32 *bi0, u32 *next0, u32 *error0, bool is_custom_app)
void vlib_put_next_frame(vlib_main_t *vm, vlib_node_runtime_t *r, u32 next_index, u32 n_vectors_left)
Release pointer to next frame vector data.
vlib_node_t * vlib_get_node_by_name(vlib_main_t *vm, u8 *name)
static uword ip4_reassembly_handoff_node_inline(vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *frame, bool is_feature)
#define IP4_REASS_MAX_REASSEMBLIES_DEFAULT
static int ip4_get_fragment_more(const ip4_header_t *i)
static ip4_reass_rc_t ip4_reass_remove_range_from_chain(vlib_main_t *vm, vlib_node_runtime_t *node, ip4_reass_main_t *rm, ip4_reass_t *reass, u32 prev_range_bi, u32 discard_bi)
#define IP4_REASS_HT_LOAD_FACTOR
vnet_api_error_t ip4_reass_enable_disable(u32 sw_if_index, u8 enable_disable)
#define VLIB_CLI_COMMAND(x,...)
vnet_api_error_t ip4_reass_get(u32 *timeout_ms, u32 *max_reassemblies, u32 *max_reassembly_length, u32 *expire_walk_interval_ms)
get ip4 reassembly configuration
u16 cached_next_index
Next frame index that vector arguments were last enqueued to last time this node ran.
static u32 ip4_reass_get_nbuckets()
static void ip4_reass_drop_all(vlib_main_t *vm, vlib_node_runtime_t *node, ip4_reass_main_t *rm, ip4_reass_t *reass)
static u32 ip4_reass_buffer_get_data_offset(vlib_buffer_t *b)
static void vlib_buffer_advance(vlib_buffer_t *b, word l)
Advance current data pointer by the supplied (signed!) amount.
#define IP4_REASS_TIMEOUT_DEFAULT_MS
#define VNET_FEATURES(...)
static void * vlib_add_trace(vlib_main_t *vm, vlib_node_runtime_t *r, vlib_buffer_t *b, u32 n_data_bytes)
#define vec_elt(v, i)
Get vector value at index i.
void clib_bihash_copied(void *dst, void *src)
struct _vlib_node_registration vlib_node_registration_t
static char * ip4_reassembly_handoff_error_strings[]
#define vec_len(v)
Number of elements in vector (rvalue-only, NULL tolerant)
u32 next_buffer
Next buffer for this linked-list of buffers.
VLIB buffer representation.
static void * vlib_frame_vector_args(vlib_frame_t *f)
Get pointer to frame vector data.
ip4_reass_trace_operation_e action
static vlib_node_registration_t ip4_reass_expire_node
(constructor) VLIB_REGISTER_NODE (ip4_reass_expire_node)
static_always_inline u32 vlib_buffer_enqueue_to_thread(vlib_main_t *vm, u32 frame_queue_index, u32 *buffer_indices, u16 *thread_indices, u32 n_packets, int drop_on_congestion)
static u8 * format_ip4_reass(u8 *s, va_list *args)
ip4_main_t ip4_main
Global ip4 main structure.
static u32 vlib_num_workers()
#define vec_foreach(var, vec)
Vector iterator.
u16 flags
Copy of main node flags.
static void vlib_buffer_free_one(vlib_main_t *vm, u32 buffer_index)
Free one buffer Shorthand to free a single buffer chain.
static int ip4_header_bytes(const ip4_header_t *i)
#define pool_foreach_index(i, v, body)
Iterate pool by index.
static_always_inline void vlib_get_buffers(vlib_main_t *vm, u32 *bi, vlib_buffer_t **b, int count)
Translate array of buffer indices into buffer pointers.
#define VLIB_NODE_FLAG_TRACE
u32 total_length_not_including_first_buffer
Only valid for first buffer in chain.
u32 fq_index
Worker handoff.
vlib_node_registration_t ip4_reass_node_feature
(constructor) VLIB_REGISTER_NODE (ip4_reass_node_feature)
void vlib_cli_output(vlib_main_t *vm, char *fmt,...)
static vlib_buffer_t * vlib_get_buffer(vlib_main_t *vm, u32 buffer_index)
Translate buffer index into buffer pointer.
static u16 ip4_header_checksum(ip4_header_t *i)
int vnet_feature_enable_disable(const char *arc_name, const char *node_name, u32 sw_if_index, int enable_disable, void *feature_config, u32 n_feature_config_bytes)
CLIB vectors are ubiquitous dynamically resized arrays with by user defined "headers".