#define MSEC_PER_SEC 1000
#define IP6_REASS_TIMEOUT_DEFAULT_MS 100
#define IP6_REASS_EXPIRE_WALK_INTERVAL_DEFAULT_MS 10000 // 10 seconds default
-#define IP6_REASS_MAX_REASSEMBLIES_DEAFULT 1024
+#define IP6_REASS_MAX_REASSEMBLIES_DEFAULT 1024
#define IP6_REASS_HT_LOAD_FACTOR (0.75)
static vlib_node_registration_t ip6_reass_node;
{
// hash table key
ip6_reass_key_t key;
- // time when first packet was received
- f64 first_heard;
// time when last packet was received
f64 last_heard;
// internal id of this reassembly
- u32 id;
+ u64 id;
// buffer index of first buffer in this reassembly context
u32 first_bi;
// last octet of packet, ~0 until fragment without more_fragments arrives
u32 data_len;
// trace operation counter
u32 trace_op_counter;
+ // next index - used by non-feature node
+ u8 next_index;
+ // minimum fragment length for this reassembly - used to estimate MTU
+ u16 min_fragment_length;
} ip6_reass_t;
+typedef struct
+{
+ ip6_reass_t *pool;
+ u32 reass_n;
+ u32 buffers_n;
+ u32 id_counter;
+ clib_spinlock_t lock;
+} ip6_reass_per_thread_t;
+
typedef struct
{
// IPv6 config
u32 max_reass_n;
// IPv6 runtime
- ip6_reass_t *pool;
clib_bihash_48_8_t hash;
- u32 reass_n;
- u32 id_counter;
- u32 buffers_n;
+
+ // per-thread data
+ ip6_reass_per_thread_t *per_thread_data;
// convenience
vlib_main_t *vlib_main;
typedef struct
{
ip6_reass_trace_operation_e action;
- u32 pool_index;
u32 reass_id;
ip6_reass_range_trace_t trace_range;
u32 size_diff;
trace->range_bi = bi;
}
-u8 *
+static u8 *
format_ip6_reass_range_trace (u8 * s, va_list * args)
{
ip6_reass_range_trace_t *trace = va_arg (*args, ip6_reass_range_trace_t *);
return s;
}
-u8 *
+static u8 *
format_ip6_reass_trace (u8 * s, va_list * args)
{
CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
{
vlib_buffer_t *b = vlib_get_buffer (vm, bi);
vnet_buffer_opaque_t *vnb = vnet_buffer (b);
+ if (pool_is_free_index (vm->trace_main.trace_buffer_pool, b->trace_index))
+ {
+ // this buffer's trace is gone
+ b->flags &= ~VLIB_BUFFER_IS_TRACED;
+ return;
+ }
ip6_reass_trace_t *t = vlib_add_trace (vm, node, b, sizeof (t[0]));
- t->pool_index = reass - rm->pool;
t->reass_id = reass->id;
t->action = action;
ip6_reass_trace_details (vm, bi, &t->trace_range);
#endif
}
-static void
-ip6_reass_free (ip6_reass_main_t * rm, ip6_reass_t * reass)
+always_inline void
+ip6_reass_free (ip6_reass_main_t * rm, ip6_reass_per_thread_t * rt,
+ ip6_reass_t * reass)
{
clib_bihash_kv_48_8_t kv;
kv.key[0] = reass->key.as_u64[0];
kv.key[4] = reass->key.as_u64[4];
kv.key[5] = reass->key.as_u64[5];
clib_bihash_add_del_48_8 (&rm->hash, &kv, 0);
- pool_put (rm->pool, reass);
- --rm->reass_n;
+ pool_put (rt->pool, reass);
+ --rt->reass_n;
}
-static void
+always_inline void
ip6_reass_drop_all (vlib_main_t * vm, ip6_reass_main_t * rm,
ip6_reass_t * reass, u32 ** vec_drop_bi)
{
}
}
-static void
+always_inline 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)
ip6_reass_drop_all (vm, rm, reass, 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,
+always_inline 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)
{
if (!clib_bihash_search_48_8 (&rm->hash, &kv, &value))
{
- reass = pool_elt_at_index (rm->pool, value.value);
+ reass = pool_elt_at_index (rt->pool, value.value);
if (now > reass->last_heard + rm->timeout)
{
ip6_reass_on_timeout (vm, node, rm, reass, icmp_bi, vec_timeout);
- ip6_reass_free (rm, reass);
+ ip6_reass_free (rm, rt, reass);
reass = NULL;
}
}
return reass;
}
- if (rm->reass_n >= rm->max_reass_n)
+ if (rt->reass_n >= rm->max_reass_n)
{
reass = NULL;
return reass;
}
else
{
- pool_get (rm->pool, reass);
+ pool_get (rt->pool, reass);
memset (reass, 0, sizeof (*reass));
- reass->id = rm->id_counter;
- ++rm->id_counter;
+ reass->id =
+ ((u64) os_get_thread_index () * 1000000000) + rt->id_counter;
+ ++rt->id_counter;
reass->first_bi = ~0;
reass->last_packet_octet = ~0;
reass->data_len = 0;
- ++rm->reass_n;
+ ++rt->reass_n;
}
reass->key.as_u64[0] = kv.key[0] = k->as_u64[0];
reass->key.as_u64[3] = kv.key[3] = k->as_u64[3];
reass->key.as_u64[4] = kv.key[4] = k->as_u64[4];
reass->key.as_u64[5] = kv.key[5] = k->as_u64[5];
- kv.value = reass - rm->pool;
+ kv.value = reass - rt->pool;
reass->last_heard = now;
if (clib_bihash_add_del_48_8 (&rm->hash, &kv, 1))
{
- ip6_reass_free (rm, reass);
+ ip6_reass_free (rm, rt, reass);
reass = NULL;
}
return reass;
}
-void
+always_inline void
ip6_reass_finalize (vlib_main_t * vm, vlib_node_runtime_t * node,
- ip6_reass_main_t * rm, ip6_reass_t * reass, u32 * bi0,
- u32 * next0, vlib_error_t * error0, u32 next_input,
- u32 ** vec_drop_compress)
+ 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)
{
ASSERT (~0 != reass->first_bi);
*bi0 = reass->first_bi;
- *next0 = next_input;
*error0 = IP6_ERROR_NONE;
ip6_frag_hdr_t *frag_hdr;
vlib_buffer_t *last_b = NULL;
ip->payload_length =
clib_host_to_net_u16 (total_length + first_b->current_length -
sizeof (*ip));
- ip6_reass_free (rm, reass);
vlib_buffer_chain_compress (vm, first_b, vec_drop_compress);
if (PREDICT_FALSE (first_b->flags & VLIB_BUFFER_IS_TRACED))
{
while (0);
#endif
}
+ if (is_feature)
+ {
+ *next0 = IP6_REASSEMBLY_NEXT_INPUT;
+ }
+ else
+ {
+ *next0 = reass->next_index;
+ }
+ vnet_buffer (first_b)->ip.reass.estimated_mtu = reass->min_fragment_length;
+ ip6_reass_free (rm, rt, reass);
reass = NULL;
}
-static u32
+always_inline u32
ip6_reass_get_buffer_chain_length (vlib_main_t * vm, vlib_buffer_t * b)
{
u32 len = 0;
return len;
}
-static void
-ip6_reass_insert_range_in_chain (vlib_main_t * vm,
- ip6_reass_main_t * rm,
- ip6_reass_t * reass,
- u32 prev_range_bi, u32 new_next_bi)
+always_inline 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)
{
vlib_buffer_t *new_next_b = vlib_get_buffer (vm, new_next_bi);
reass->first_bi = new_next_bi;
}
reass->data_len += ip6_reass_buffer_get_data_len (new_next_b);
- rm->buffers_n += ip6_reass_get_buffer_chain_length (vm, new_next_b);
+ rt->buffers_n += ip6_reass_get_buffer_chain_length (vm, new_next_b);
}
-void
+always_inline void
ip6_reass_update (vlib_main_t * vm, vlib_node_runtime_t * node,
- ip6_reass_main_t * rm, 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, u32 next_input, u32 next_drop,
- u32 next_icmp_error)
+ 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)
{
int consumed = 0;
vlib_buffer_t *fb = vlib_get_buffer (vm, *bi0);
fvnb->ip.reass.range_first = fragment_first;
fvnb->ip.reass.range_last = fragment_last;
fvnb->ip.reass.next_range_bi = ~0;
- if (more_fragments && 0 != fragment_length % 8)
- {
- if (PREDICT_FALSE (fb->flags & VLIB_BUFFER_IS_TRACED))
- {
- ip6_reass_add_trace (vm, node, rm, reass, *bi0,
- ICMP_ERROR_FL_NOT_MULT_8, 0);
- }
- *next0 = next_icmp_error;
- icmp6_error_set_vnet_buffer (fb, ICMP6_parameter_problem,
- ICMP6_parameter_problem_erroneous_header_field,
- (u8 *) & fip->payload_length - (u8 *) fip);
- return;
- }
- if (fragment_first + fragment_length > 65535)
- {
- if (PREDICT_FALSE (fb->flags & VLIB_BUFFER_IS_TRACED))
- {
- ip6_reass_add_trace (vm, node, rm, reass, *bi0,
- ICMP_ERROR_FL_TOO_BIG, 0);
- }
- *next0 = next_icmp_error;
- ip6_header_t *ip0 = vlib_buffer_get_current (fb);
- icmp6_error_set_vnet_buffer (fb, ICMP6_parameter_problem,
- ICMP6_parameter_problem_erroneous_header_field,
- (u8 *) & frag_hdr->fragment_offset_and_more
- - (u8 *) ip0);
- return;
- }
if (!more_fragments)
{
reass->last_packet_octet = fragment_last;
if (~0 == reass->first_bi)
{
// starting a new reassembly
- ip6_reass_insert_range_in_chain (vm, rm, reass, prev_range_bi, *bi0);
+ ip6_reass_insert_range_in_chain (vm, rm, rt, reass, prev_range_bi,
+ *bi0);
if (PREDICT_FALSE (fb->flags & VLIB_BUFFER_IS_TRACED))
{
ip6_reass_add_trace (vm, node, rm, reass, *bi0, RANGE_NEW, 0);
}
+ reass->min_fragment_length = clib_net_to_host_u16 (fip->payload_length);
*bi0 = ~0;
return;
}
- fvnb->ip.reass.estimated_mtu =
+ reass->min_fragment_length =
clib_min (clib_net_to_host_u16 (fip->payload_length),
fvnb->ip.reass.estimated_mtu);
while (~0 != candidate_range_bi)
~0 == candidate_range_bi)
{
// special case - this fragment falls beyond all known ranges
- ip6_reass_insert_range_in_chain (vm, rm, reass, prev_range_bi,
- *bi0);
+ ip6_reass_insert_range_in_chain (vm, rm, rt, reass,
+ prev_range_bi, *bi0);
consumed = 1;
break;
}
if (fragment_last < candidate_vnb->ip.reass.range_first)
{
// this fragment ends before candidate range without any overlap
- ip6_reass_insert_range_in_chain (vm, rm, reass, prev_range_bi,
+ ip6_reass_insert_range_in_chain (vm, rm, rt, reass, prev_range_bi,
*bi0);
consumed = 1;
}
{
// overlapping fragment - not allowed by RFC 8200
ip6_reass_drop_all (vm, rm, reass, vec_drop_overlap);
- ip6_reass_free (rm, reass);
+ ip6_reass_free (rm, rt, reass);
if (PREDICT_FALSE (fb->flags & VLIB_BUFFER_IS_TRACED))
{
ip6_reass_add_trace (vm, node, rm, reass, *bi0, RANGE_OVERLAP,
0);
}
- *next0 = next_drop;
+ *next0 = IP6_REASSEMBLY_NEXT_DROP;
*error0 = IP6_ERROR_REASS_OVERLAPPING_FRAGMENT;
}
break;
if (~0 != reass->last_packet_octet &&
reass->data_len == reass->last_packet_octet + 1)
{
- ip6_reass_finalize (vm, node, rm, reass, bi0, next0, error0, next_input,
- vec_drop_compress);
+ ip6_reass_finalize (vm, node, rm, rt, reass, bi0, next0, error0,
+ vec_drop_compress, is_feature);
}
else
{
}
else
{
- *next0 = next_drop;
+ *next0 = IP6_REASSEMBLY_NEXT_DROP;
+ ;
*error0 = IP6_ERROR_REASS_DUPLICATE_FRAGMENT;
}
}
}
+always_inline bool
+ip6_reass_verify_upper_layer_present (vlib_node_runtime_t * node,
+ vlib_buffer_t * b,
+ ip6_frag_hdr_t * frag_hdr)
+{
+ ip6_ext_header_t *tmp = (ip6_ext_header_t *) frag_hdr;
+ while (ip6_ext_hdr (tmp->next_hdr))
+ {
+ tmp = ip6_ext_next_header (tmp);
+ }
+ if (IP_PROTOCOL_IP6_NONXT == tmp->next_hdr)
+ {
+ icmp6_error_set_vnet_buffer (b, ICMP6_parameter_problem,
+ ICMP6_parameter_problem_first_fragment_has_incomplete_header_chain,
+ 0);
+ b->error = node->errors[IP6_ERROR_REASS_MISSING_UPPER];
+
+ return false;
+ }
+ return true;
+}
+
+always_inline 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)
+{
+ vnet_buffer_opaque_t *vnb = vnet_buffer (b);
+ ip6_header_t *ip = vlib_buffer_get_current (b);
+ int more_fragments = ip6_frag_hdr_more (frag_hdr);
+ u32 fragment_length =
+ vlib_buffer_length_in_chain (vm, b) -
+ (vnb->ip.reass.ip6_frag_hdr_offset + sizeof (*frag_hdr));
+ if (more_fragments && 0 != fragment_length % 8)
+ {
+ icmp6_error_set_vnet_buffer (b, ICMP6_parameter_problem,
+ ICMP6_parameter_problem_erroneous_header_field,
+ (u8 *) & ip->payload_length - (u8 *) ip);
+ return false;
+ }
+ return true;
+}
+
+always_inline 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)
+{
+ vnet_buffer_opaque_t *vnb = vnet_buffer (b);
+ u32 fragment_first = ip6_frag_hdr_offset_bytes (frag_hdr);
+ u32 fragment_length =
+ vlib_buffer_length_in_chain (vm, b) -
+ (vnb->ip.reass.ip6_frag_hdr_offset + sizeof (*frag_hdr));
+ if (fragment_first + fragment_length > 65535)
+ {
+ ip6_header_t *ip0 = vlib_buffer_get_current (b);
+ icmp6_error_set_vnet_buffer (b, ICMP6_parameter_problem,
+ ICMP6_parameter_problem_erroneous_header_field,
+ (u8 *) & frag_hdr->fragment_offset_and_more
+ - (u8 *) ip0);
+ return false;
+ }
+ return true;
+}
+
always_inline uword
-ip6_reassembly (vlib_main_t * vm, vlib_node_runtime_t * node,
- vlib_frame_t * frame)
+ip6_reassembly_inline (vlib_main_t * vm,
+ vlib_node_runtime_t * node,
+ vlib_frame_t * frame, bool is_feature)
{
u32 *from = vlib_frame_vector_args (frame);
u32 n_left_from, n_left_to_next, *to_next, next_index;
ip6_reass_main_t *rm = &ip6_reass_main;
+ ip6_reass_per_thread_t *rt = &rm->per_thread_data[os_get_thread_index ()];
+ clib_spinlock_lock (&rt->lock);
n_left_from = frame->n_vectors;
next_index = node->cached_next_index;
static u32 *vec_drop_overlap = NULL; // indexes of buffers dropped due to overlap
static u32 *vec_drop_compress = NULL; // indexes of buffers dropped due to buffer compression
while (n_left_from > 0 || vec_len (vec_timeout) > 0 ||
- vec_len (vec_drop_overlap) > 0)
+ vec_len (vec_drop_overlap) > 0 || vec_len (vec_drop_compress) > 0)
{
vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
vlib_validate_buffer_enqueue_x1 (vm, node, next_index, to_next,
n_left_to_next, bi,
IP6_REASSEMBLY_NEXT_DROP);
- ASSERT (rm->buffers_n > 0);
- --rm->buffers_n;
+ ASSERT (rt->buffers_n > 0);
+ --rt->buffers_n;
}
while (vec_len (vec_drop_overlap) > 0 && n_left_to_next > 0)
vlib_validate_buffer_enqueue_x1 (vm, node, next_index, to_next,
n_left_to_next, bi,
IP6_REASSEMBLY_NEXT_DROP);
- ASSERT (rm->buffers_n > 0);
- --rm->buffers_n;
+ ASSERT (rt->buffers_n > 0);
+ --rt->buffers_n;
}
while (vec_len (vec_drop_compress) > 0 && n_left_to_next > 0)
vlib_validate_buffer_enqueue_x1 (vm, node, next_index, to_next,
n_left_to_next, bi,
IP6_REASSEMBLY_NEXT_DROP);
- ASSERT (rm->buffers_n > 0);
- --rm->buffers_n;
+ ASSERT (rt->buffers_n > 0);
+ --rt->buffers_n;
}
while (n_left_from > 0 && n_left_to_next > 0)
{
u32 bi0;
vlib_buffer_t *b0;
- u32 next0; //, error0;
+ u32 next0;
+ u32 error0 = IP6_ERROR_NONE;
+ u32 icmp_bi = ~0;
bi0 = from[0];
b0 = vlib_get_buffer (vm, bi0);
ip6_ext_header_t *prev_hdr;
ip6_ext_header_find_t (ip0, prev_hdr, frag_hdr,
IP_PROTOCOL_IPV6_FRAGMENTATION);
+ if (!frag_hdr)
+ {
+ // this is a regular packet - no fragmentation
+ next0 = IP6_REASSEMBLY_NEXT_INPUT;
+ goto skip_reass;
+ }
if (0 == ip6_frag_hdr_offset (frag_hdr))
{
// first fragment - verify upper-layer is present
- ip6_ext_header_t *tmp = (ip6_ext_header_t *) frag_hdr;
- while (ip6_ext_hdr (tmp->next_hdr))
- {
- tmp = ip6_ext_next_header (tmp);
- }
- if (IP_PROTOCOL_IP6_NONXT == tmp->next_hdr)
+ if (!ip6_reass_verify_upper_layer_present (node, b0, frag_hdr))
{
- icmp6_error_set_vnet_buffer (b0, ICMP6_parameter_problem,
- ICMP6_parameter_problem_first_fragment_has_incomplete_header_chain,
- 0);
- b0->error = node->errors[IP6_ERROR_REASS_MISSING_UPPER];
-
- to_next[0] = bi0;
- to_next += 1;
- n_left_to_next -= 1;
- vlib_validate_buffer_enqueue_x1 (vm, node, next_index,
- to_next, n_left_to_next,
- bi0,
- IP6_REASSEMBLY_NEXT_ICMP_ERROR);
- goto next;
+ next0 = IP6_REASSEMBLY_NEXT_ICMP_ERROR;
+ goto skip_reass;
}
}
+ if (!ip6_reass_verify_fragment_multiple_8 (vm, node, b0, frag_hdr)
+ || !ip6_reass_verify_packet_size_lt_64k (vm, node, b0,
+ frag_hdr))
+ {
+ next0 = IP6_REASSEMBLY_NEXT_ICMP_ERROR;
+ goto skip_reass;
+ }
vnet_buffer (b0)->ip.reass.ip6_frag_hdr_offset =
(u8 *) frag_hdr - (u8 *) ip0;
k.frag_id = frag_hdr->identification;
k.proto = ip0->protocol;
k.unused = 0;
- u32 icmp_bi = ~0;
ip6_reass_t *reass =
- ip6_reass_find_or_create (vm, node, rm, &k, &icmp_bi,
+ ip6_reass_find_or_create (vm, node, rm, rt, &k, &icmp_bi,
&vec_timeout);
- u32 error0 = IP6_ERROR_NONE;
if (reass)
{
- ip6_reass_update (vm, node, rm, reass, &bi0, &next0, &error0,
- frag_hdr, &vec_drop_overlap,
- &vec_drop_compress, IP6_REASSEMBLY_NEXT_INPUT,
- IP6_REASSEMBLY_NEXT_DROP,
- IP6_REASSEMBLY_NEXT_ICMP_ERROR);
+ ip6_reass_update (vm, node, rm, rt, reass, &bi0, &next0,
+ &error0, frag_hdr, &vec_drop_overlap,
+ &vec_drop_compress, is_feature);
}
else
{
if (~0 != bi0)
{
+ skip_reass:
to_next[0] = bi0;
to_next += 1;
n_left_to_next -= 1;
+ if (is_feature && IP6_ERROR_NONE == error0)
+ {
+ vnet_feature_next (vnet_buffer (b0)->sw_if_index[VLIB_RX],
+ &next0, b0);
+ }
vlib_validate_buffer_enqueue_x1 (vm, node, next_index, to_next,
n_left_to_next, bi0, next0);
}
n_left_to_next, icmp_bi,
next0);
}
- next:
from += 1;
n_left_from -= 1;
}
vlib_put_next_frame (vm, node, next_index, n_left_to_next);
}
+ clib_spinlock_unlock (&rt->lock);
return frame->n_vectors;
}
#undef _
};
+always_inline uword
+ip6_reassembly (vlib_main_t * vm, vlib_node_runtime_t * node,
+ vlib_frame_t * frame)
+{
+ return ip6_reassembly_inline (vm, node, frame, false /* is_feature */ );
+}
+
/* *INDENT-OFF* */
VLIB_REGISTER_NODE (ip6_reass_node, static) = {
.function = ip6_reassembly,
};
/* *INDENT-ON* */
-VLIB_NODE_FUNCTION_MULTIARCH (ip6_reass_node, ip6_reassembly)
- static u32 ip6_reass_get_nbuckets ()
+VLIB_NODE_FUNCTION_MULTIARCH (ip6_reass_node, ip6_reassembly);
+
+always_inline uword
+ip6_reassembly_feature (vlib_main_t * vm,
+ vlib_node_runtime_t * node, vlib_frame_t * frame)
+{
+ return ip6_reassembly_inline (vm, node, frame, true /* is_feature */ );
+}
+
+/* *INDENT-OFF* */
+VLIB_REGISTER_NODE (ip6_reass_node_feature, static) = {
+ .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",
+ },
+};
+/* *INDENT-ON* */
+
+VLIB_NODE_FUNCTION_MULTIARCH (ip6_reass_node_feature, ip6_reassembly_feature);
+
+/* *INDENT-OFF* */
+VNET_FEATURE_INIT (ip6_reassembly_feature, static) = {
+ .arc_name = "ip6-unicast",
+ .node_name = "ip6-reassembly-feature",
+ .runs_before = VNET_FEATURES ("ip6-lookup"),
+ .runs_after = 0,
+};
+/* *INDENT-ON* */
+
+static u32
+ip6_reass_get_nbuckets ()
{
ip6_reass_main_t *rm = &ip6_reass_main;
u32 nbuckets;
clib_bihash_48_8_t *new_hash;
} ip6_rehash_cb_ctx;
-void
+static void
ip6_rehash_cb (clib_bihash_kv_48_8_t * kv, void *_ctx)
{
ip6_rehash_cb_ctx *ctx = _ctx;
}
}
-vnet_api_error_t
-ip6_reass_set (u32 timeout_ms, u32 max_reassemblies,
- u32 expire_walk_interval_ms)
+static void
+ip6_reass_set_params (u32 timeout_ms, u32 max_reassemblies,
+ u32 expire_walk_interval_ms)
{
- u32 old_nbuckets = ip6_reass_get_nbuckets ();
ip6_reass_main.timeout_ms = timeout_ms;
ip6_reass_main.timeout = (f64) timeout_ms / (f64) MSEC_PER_SEC;
ip6_reass_main.max_reass_n = max_reassemblies;
ip6_reass_main.expire_walk_interval_ms = expire_walk_interval_ms;
+}
+
+vnet_api_error_t
+ip6_reass_set (u32 timeout_ms, u32 max_reassemblies,
+ u32 expire_walk_interval_ms)
+{
+ u32 old_nbuckets = ip6_reass_get_nbuckets ();
+ ip6_reass_set_params (timeout_ms, max_reassemblies,
+ expire_walk_interval_ms);
vlib_process_signal_event (ip6_reass_main.vlib_main,
ip6_reass_main.ip6_reass_expire_node_idx,
IP6_EVENT_CONFIG_CHANGED, 0);
return 0;
}
-clib_error_t *
+static clib_error_t *
ip6_reass_init_function (vlib_main_t * vm)
{
ip6_reass_main_t *rm = &ip6_reass_main;
rm->vlib_main = vm;
rm->vnet_main = vnet_get_main ();
- rm->reass_n = 0;
- pool_alloc (rm->pool, rm->max_reass_n);
+ vec_validate (rm->per_thread_data, vlib_num_workers () + 1);
+ ip6_reass_per_thread_t *rt;
+ vec_foreach (rt, rm->per_thread_data)
+ {
+ clib_spinlock_init (&rt->lock);
+ pool_alloc (rt->pool, rm->max_reass_n);
+ }
node = vlib_get_node_by_name (vm, (u8 *) "ip6-reassembly-expire-walk");
ASSERT (node);
rm->ip6_reass_expire_node_idx = node->index;
- ip6_reass_set (IP6_REASS_TIMEOUT_DEFAULT_MS,
- IP6_REASS_MAX_REASSEMBLIES_DEAFULT,
- IP6_REASS_EXPIRE_WALK_INTERVAL_DEFAULT_MS);
-
nbuckets = ip6_reass_get_nbuckets ();
clib_bihash_init_48_8 (&rm->hash, "ip6-reass", nbuckets, nbuckets * 1024);
return error;
ip6_register_protocol (IP_PROTOCOL_IPV6_FRAGMENTATION,
ip6_reass_node.index);
+
+ ip6_reass_set_params (IP6_REASS_TIMEOUT_DEFAULT_MS,
+ IP6_REASS_MAX_REASSEMBLIES_DEFAULT,
+ IP6_REASS_EXPIRE_WALK_INTERVAL_DEFAULT_MS);
+
return error;
}
u32 *vec_timeout = NULL;
int *pool_indexes_to_free = NULL;
+ uword thread_index = 0;
int index;
- /* *INDENT-OFF* */
- pool_foreach_index (index, rm->pool, ({
- reass = pool_elt_at_index (rm->pool, index);
- if (now > reass->last_heard + rm->timeout)
- {
- vec_add1 (pool_indexes_to_free, index);
- }
- }));
- /* *INDENT-ON* */
- int *i;
+ const uword nthreads = os_get_nthreads ();
u32 *vec_icmp_bi = NULL;
- /* *INDENT-OFF* */
- vec_foreach (i, pool_indexes_to_free)
- {
- ip6_reass_t *reass = pool_elt_at_index (rm->pool, i[0]);
- u32 icmp_bi = ~0;
- ip6_reass_on_timeout (vm, node, rm, reass, &icmp_bi, &vec_timeout);
- if (~0 != icmp_bi)
+ for (thread_index = 0; thread_index < nthreads; ++thread_index)
+ {
+ ip6_reass_per_thread_t *rt = &rm->per_thread_data[thread_index];
+ clib_spinlock_lock (&rt->lock);
+
+ vec_reset_length (pool_indexes_to_free);
+ /* *INDENT-OFF* */
+ pool_foreach_index (index, rt->pool, ({
+ reass = pool_elt_at_index (rt->pool, index);
+ if (now > reass->last_heard + rm->timeout)
+ {
+ vec_add1 (pool_indexes_to_free, index);
+ }
+ }));
+ /* *INDENT-ON* */
+ int *i;
+ /* *INDENT-OFF* */
+ vec_foreach (i, pool_indexes_to_free)
{
- vec_add1 (vec_icmp_bi, icmp_bi);
+ ip6_reass_t *reass = pool_elt_at_index (rt->pool, i[0]);
+ u32 icmp_bi = ~0;
+ u32 before = vec_len (vec_timeout);
+ vlib_buffer_t *b = vlib_get_buffer (vm, reass->first_bi);
+ if (PREDICT_FALSE (b->flags & VLIB_BUFFER_IS_TRACED))
+ {
+ if (pool_is_free_index (vm->trace_main.trace_buffer_pool,
+ b->trace_index))
+ {
+ /* the trace is gone, don't trace this buffer anymore */
+ b->flags &= ~VLIB_BUFFER_IS_TRACED;
+ }
+ }
+ ip6_reass_on_timeout (vm, node, rm, reass, &icmp_bi, &vec_timeout);
+ u32 after = vec_len (vec_timeout);
+ ASSERT (rt->buffers_n >= (after - before));
+ rt->buffers_n -= (after - before);
+ if (~0 != icmp_bi)
+ {
+ vec_add1 (vec_icmp_bi, icmp_bi);
+ ASSERT (rt->buffers_n > 0);
+ --rt->buffers_n;
+ }
+ ip6_reass_free (rm, rt, reass);
}
- ip6_reass_free (rm, reass);
- }
- /* *INDENT-ON* */
+ /* *INDENT-ON* */
+
+ clib_spinlock_unlock (&rt->lock);
+ }
while (vec_len (vec_timeout) > 0)
{
vlib_frame_t *f = vlib_get_frame_to_node (vm, rm->ip6_drop_idx);
u32 *to_next = vlib_frame_vector_args (f);
u32 n_left_to_next = VLIB_FRAME_SIZE - f->n_vectors;
- u32 n_trace = 0;
+ int trace_frame = 0;
while (vec_len (vec_timeout) > 0 && n_left_to_next > 0)
{
u32 bi = vec_pop (vec_timeout);
}
else
{
- ++n_trace;
+ trace_frame = 1;
}
}
b->error = node->errors[IP6_ERROR_REASS_TIMEOUT];
++f->n_vectors;
to_next += 1;
n_left_to_next -= 1;
- ASSERT (rm->buffers_n > 0);
- --rm->buffers_n;
- }
- if (PREDICT_FALSE (n_trace > 0))
- {
- f->flags |= VLIB_FRAME_TRACE;
}
+ f->flags |= (trace_frame * VLIB_FRAME_TRACE);
vlib_put_frame_to_node (vm, rm->ip6_drop_idx, f);
}
vlib_get_frame_to_node (vm, rm->ip6_icmp_error_idx);
u32 *to_next = vlib_frame_vector_args (f);
u32 n_left_to_next = VLIB_FRAME_SIZE - f->n_vectors;
- u32 n_trace = 0;
+ int trace_frame = 0;
while (vec_len (vec_icmp_bi) > 0 && n_left_to_next > 0)
{
u32 bi = vec_pop (vec_icmp_bi);
}
else
{
- ++n_trace;
+ trace_frame = 1;
}
}
b->error = node->errors[IP6_ERROR_REASS_TIMEOUT];
++f->n_vectors;
to_next += 1;
n_left_to_next -= 1;
- ASSERT (rm->buffers_n > 0);
- --rm->buffers_n;
- }
- if (PREDICT_FALSE (n_trace > 0))
- {
- f->flags |= VLIB_FRAME_TRACE;
}
+ f->flags |= (trace_frame * VLIB_FRAME_TRACE);
vlib_put_frame_to_node (vm, rm->ip6_icmp_error_idx, f);
}
vlib_main_t *vm = va_arg (*args, vlib_main_t *);
ip6_reass_t *reass = va_arg (*args, ip6_reass_t *);
- s = format (s, "ID: %u, key: %U\n first_bi: %u, data_len: %u, "
+ s = format (s, "ID: %lu, key: %U\n first_bi: %u, data_len: %u, "
"last_packet_octet: %u, trace_op_counter: %u\n",
reass->id, format_ip6_reass_key, &reass->key, reass->first_bi,
reass->data_len, reass->last_packet_octet,
vlib_cli_output (vm, "---------------------");
vlib_cli_output (vm, "IP6 reassembly status");
vlib_cli_output (vm, "---------------------");
+ bool details = false;
if (unformat (input, "details"))
{
- ip6_reass_t *reass;
- /* *INDENT-OFF* */
- pool_foreach (reass, rm->pool, {
- vlib_cli_output (vm, "%U", format_ip6_reass, vm, reass);
- });
- /* *INDENT-ON* */
+ details = true;
+ }
+
+ u32 sum_reass_n = 0;
+ u64 sum_buffers_n = 0;
+ ip6_reass_t *reass;
+ uword thread_index;
+ const uword nthreads = os_get_nthreads ();
+ for (thread_index = 0; thread_index < nthreads; ++thread_index)
+ {
+ ip6_reass_per_thread_t *rt = &rm->per_thread_data[thread_index];
+ clib_spinlock_lock (&rt->lock);
+ if (details)
+ {
+ /* *INDENT-OFF* */
+ pool_foreach (reass, rt->pool, {
+ vlib_cli_output (vm, "%U", format_ip6_reass, vm, reass);
+ });
+ /* *INDENT-ON* */
+ }
+ sum_reass_n += rt->reass_n;
+ sum_buffers_n += rt->buffers_n;
+ clib_spinlock_unlock (&rt->lock);
}
vlib_cli_output (vm, "---------------------");
- vlib_cli_output (vm, "Current IP6 reassemblies count: %lu\n", rm->reass_n);
- vlib_cli_output (vm,
- "Maximum configured concurrent IP6 reassemblies: %lu\n",
- (long unsigned) rm->max_reass_n);
+ vlib_cli_output (vm, "Current IP6 reassemblies count: %lu\n",
+ (long unsigned) sum_reass_n);
+ vlib_cli_output (vm, "Maximum configured concurrent IP6 reassemblies per "
+ "worker-thread: %lu\n", (long unsigned) rm->max_reass_n);
vlib_cli_output (vm, "Buffers in use: %lu\n",
- (long unsigned) rm->buffers_n);
+ (long unsigned) sum_buffers_n);
return 0;
}
};
/* *INDENT-ON* */
+vnet_api_error_t
+ip6_reass_enable_disable (u32 sw_if_index, u8 enable_disable)
+{
+ return vnet_feature_enable_disable ("ip6-unicast", "ip6-reassembly-feature",
+ sw_if_index, enable_disable, 0, 0);
+}
+
/*
* fd.io coding-style-patch-verification: ON
*
Code Review / vpp.git / blobdiff