{
IP4_REASS_RC_OK,
IP4_REASS_RC_INTERNAL_ERROR,
+ IP4_REASS_RC_NO_BUF,
} ip4_reass_rc_t;
typedef struct
{
ip4_reass_t *pool;
u32 reass_n;
- u32 buffers_n;
u32 id_counter;
clib_spinlock_t lock;
} ip4_reass_per_thread_t;
always_inline void
ip4_reass_on_timeout (vlib_main_t * vm, ip4_reass_main_t * rm,
- ip4_reass_t * reass, u32 ** vec_drop_timeout)
+ ip4_reass_t * reass)
{
u32 range_bi = reass->first_bi;
vlib_buffer_t *range_b;
vnet_buffer_opaque_t *range_vnb;
+ u32 *to_free = NULL;
while (~0 != range_bi)
{
range_b = vlib_get_buffer (vm, range_bi);
u32 bi = range_bi;
while (~0 != bi)
{
- vec_add1 (*vec_drop_timeout, bi);
+ vec_add1 (to_free, bi);
vlib_buffer_t *b = vlib_get_buffer (vm, bi);
if (b->flags & VLIB_BUFFER_NEXT_PRESENT)
{
}
range_bi = range_vnb->ip.reass.next_range_bi;
}
+ vlib_buffer_free (vm, to_free, vec_len (to_free));
+ vec_free (to_free);
}
ip4_reass_t *
ip4_reass_find_or_create (vlib_main_t * vm, ip4_reass_main_t * rm,
- ip4_reass_per_thread_t * rt,
- ip4_reass_key_t * k, u32 ** vec_drop_timeout)
+ ip4_reass_per_thread_t * rt, ip4_reass_key_t * k)
{
ip4_reass_t *reass = NULL;
f64 now = vlib_time_now (rm->vlib_main);
reass = pool_elt_at_index (rt->pool, value.value);
if (now > reass->last_heard + rm->timeout)
{
- ip4_reass_on_timeout (vm, rm, reass, vec_drop_timeout);
+ ip4_reass_on_timeout (vm, rm, reass);
ip4_reass_free (rm, rt, reass);
reass = NULL;
}
always_inline 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, u32 ** vec_drop_compress,
- u32 ** vec_drop_overlap, bool is_feature)
+ ip4_reass_t * reass, u32 * bi0, u32 * next0, u32 * error0,
+ bool is_feature)
{
vlib_buffer_t *first_b = vlib_get_buffer (vm, reass->first_bi);
vlib_buffer_t *last_b = NULL;
u32 sub_chain_bi = reass->first_bi;
u32 total_length = 0;
u32 buf_cnt = 0;
- u32 dropped_cnt = 0;
do
{
u32 tmp_bi = sub_chain_bi;
if (trim_front > tmp->current_length)
{
/* drop whole buffer */
- vec_add1 (*vec_drop_compress, tmp_bi);
- ++dropped_cnt;
+ vlib_buffer_free_one (vm, tmp_bi);
trim_front -= tmp->current_length;
if (!(tmp->flags & VLIB_BUFFER_NEXT_PRESENT))
{
}
else
{
- vec_add1 (*vec_drop_overlap, tmp_bi);
+ vlib_buffer_free_one (vm, tmp_bi);
if (reass->first_bi == tmp_bi)
{
return IP4_REASS_RC_INTERNAL_ERROR;
}
- ++dropped_cnt;
}
if (tmp->flags & VLIB_BUFFER_NEXT_PRESENT)
{
return IP4_REASS_RC_INTERNAL_ERROR;
}
last_b->flags &= ~VLIB_BUFFER_NEXT_PRESENT;
- rt->buffers_n -= buf_cnt - dropped_cnt;
if (total_length < first_b->current_length)
{
return IP4_REASS_RC_INTERNAL_ERROR;
ip->flags_and_fragment_offset = 0;
ip->length = clib_host_to_net_u16 (first_b->current_length + total_length);
ip->checksum = ip4_header_checksum (ip);
- u32 before = vec_len (*vec_drop_compress);
- vlib_buffer_chain_compress (vm, first_b, vec_drop_compress);
- rt->buffers_n += vec_len (*vec_drop_compress) - before;
+ if (!vlib_buffer_chain_linearize (vm, first_b))
+ {
+ return IP4_REASS_RC_NO_BUF;
+ }
if (PREDICT_FALSE (first_b->flags & VLIB_BUFFER_IS_TRACED))
{
return IP4_REASS_RC_OK;
}
-always_inline u32
-ip4_reass_get_buffer_chain_length (vlib_main_t * vm, vlib_buffer_t * b)
-{
- u32 len = 0;
- while (b)
- {
- ++len;
- if (PREDICT_FALSE (b->flags & VLIB_BUFFER_NEXT_PRESENT))
- {
- b = vlib_get_buffer (vm, b->next_buffer);
- }
- else
- {
- break;
- }
- }
- return len;
-}
-
always_inline ip4_reass_rc_t
ip4_reass_insert_range_in_chain (vlib_main_t * vm,
ip4_reass_main_t * rm,
return IP4_REASS_RC_INTERNAL_ERROR;
}
reass->data_len += ip4_reass_buffer_get_data_len (new_next_b);
- rt->buffers_n += ip4_reass_get_buffer_chain_length (vm, new_next_b);
return IP4_REASS_RC_OK;
}
ip4_reass_remove_range_from_chain (vlib_main_t * vm,
vlib_node_runtime_t * node,
ip4_reass_main_t * rm,
- u32 ** vec_drop_overlap,
ip4_reass_t * reass, u32 prev_range_bi,
u32 discard_bi)
{
reass->data_len -= ip4_reass_buffer_get_data_len (discard_b);
while (1)
{
- vec_add1 (*vec_drop_overlap, discard_bi);
+ vlib_buffer_free_one (vm, discard_bi);
if (PREDICT_FALSE (discard_b->flags & VLIB_BUFFER_IS_TRACED))
{
ip4_reass_add_trace (vm, node, rm, reass, discard_bi, RANGE_DISCARD,
always_inline 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, u32 ** vec_drop_overlap,
- u32 ** vec_drop_compress, bool is_feature)
+ ip4_reass_t * reass, u32 * bi0, u32 * next0, u32 * error0,
+ bool is_feature)
{
ip4_reass_rc_t rc = IP4_REASS_RC_OK;
int consumed = 0;
u32 next_range_bi = candidate_vnb->ip.reass.next_range_bi;
// discard candidate range, probe next range
rc =
- ip4_reass_remove_range_from_chain (vm, node, rm,
- vec_drop_overlap, reass,
+ ip4_reass_remove_range_from_chain (vm, node, rm, reass,
prev_range_bi,
candidate_range_bi);
if (IP4_REASS_RC_OK != rc)
reass->data_len == reass->last_packet_octet + 1)
{
return ip4_reass_finalize (vm, node, rm, rt, reass, bi0, next0, error0,
- vec_drop_compress, vec_drop_overlap,
is_feature);
}
else
n_left_from = frame->n_vectors;
next_index = node->cached_next_index;
- static u32 *vec_drop_timeout = NULL; // indexes of buffers which timed out
- static u32 *vec_drop_overlap = NULL; // indexes of buffers which were discarded due to overlap
- static u32 *vec_drop_internal_error = NULL; // indexes of buffers which were discarded due to internal errors
- static u32 *vec_drop_compress = NULL; // indexes of buffers dicarded due to buffer compression
- while (n_left_from > 0 || vec_len (vec_drop_timeout) > 0
- || vec_len (vec_drop_overlap) > 0 || vec_len (vec_drop_compress) > 0
- || vec_len (vec_drop_internal_error) > 0)
+ while (n_left_from > 0)
{
vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
- while (vec_len (vec_drop_timeout) > 0 && n_left_to_next > 0)
- {
- u32 bi = vec_pop (vec_drop_timeout);
- vlib_buffer_t *b = vlib_get_buffer (vm, bi);
- b->error = node->errors[IP4_ERROR_REASS_TIMEOUT];
- to_next[0] = bi;
- to_next += 1;
- n_left_to_next -= 1;
- vlib_validate_buffer_enqueue_x1 (vm, node, next_index, to_next,
- n_left_to_next, bi,
- IP4_REASSEMBLY_NEXT_DROP);
- IP4_REASS_DEBUG_BUFFER (bi, enqueue_drop_timeout);
- --rt->buffers_n;
- }
-
- while (vec_len (vec_drop_overlap) > 0 && n_left_to_next > 0)
- {
- u32 bi = vec_pop (vec_drop_overlap);
- vlib_buffer_t *b = vlib_get_buffer (vm, bi);
- b->error = node->errors[IP4_ERROR_REASS_DUPLICATE_FRAGMENT];
- to_next[0] = bi;
- to_next += 1;
- n_left_to_next -= 1;
- vlib_validate_buffer_enqueue_x1 (vm, node, next_index, to_next,
- n_left_to_next, bi,
- IP4_REASSEMBLY_NEXT_DROP);
- IP4_REASS_DEBUG_BUFFER (bi, enqueue_drop_duplicate_fragment);
- --rt->buffers_n;
- }
-
- while (vec_len (vec_drop_compress) > 0 && n_left_to_next > 0)
- {
- u32 bi = vec_pop (vec_drop_compress);
- vlib_buffer_t *b = vlib_get_buffer (vm, bi);
- b->error = node->errors[IP4_ERROR_NONE];
- to_next[0] = bi;
- to_next += 1;
- n_left_to_next -= 1;
- vlib_validate_buffer_enqueue_x1 (vm, node, next_index, to_next,
- n_left_to_next, bi,
- IP4_REASSEMBLY_NEXT_DROP);
- IP4_REASS_DEBUG_BUFFER (bi, enqueue_drop_compress);
- --rt->buffers_n;
- }
- while (vec_len (vec_drop_internal_error) > 0 && n_left_to_next > 0)
- {
- u32 bi = vec_pop (vec_drop_internal_error);
- vlib_buffer_t *b = vlib_get_buffer (vm, bi);
- b->error = node->errors[IP4_ERROR_REASS_INTERNAL_ERROR];
- to_next[0] = bi;
- to_next += 1;
- n_left_to_next -= 1;
- vlib_validate_buffer_enqueue_x1 (vm, node, next_index, to_next,
- n_left_to_next, bi,
- IP4_REASSEMBLY_NEXT_DROP);
- IP4_REASS_DEBUG_BUFFER (bi, enqueue_drop_internal_error);
- --rt->buffers_n;
- }
while (n_left_from > 0 && n_left_to_next > 0)
{
u32 bi0;
(u64) ip0->fragment_id << 32 | (u64) ip0->protocol << 48;
ip4_reass_t *reass =
- ip4_reass_find_or_create (vm, rm, rt, &k,
- &vec_drop_timeout);
+ ip4_reass_find_or_create (vm, rm, rt, &k);
if (reass)
{
switch (ip4_reass_update
(vm, node, rm, rt, reass, &bi0, &next0, &error0,
- &vec_drop_overlap, &vec_drop_compress,
is_feature))
{
case IP4_REASS_RC_OK:
/* nothing to do here */
break;
+ case IP4_REASS_RC_NO_BUF:
+ /* fallthrough */
case IP4_REASS_RC_INTERNAL_ERROR:
/* drop everything and start with a clean slate */
- ip4_reass_on_timeout (vm, rm, reass,
- &vec_drop_internal_error);
+ ip4_reass_on_timeout (vm, rm, reass);
ip4_reass_free (rm, rt, reass);
goto next_packet;
break;
f64 now = vlib_time_now (vm);
ip4_reass_t *reass;
- u32 *vec_drop_timeout = NULL;
int *pool_indexes_to_free = NULL;
uword thread_index = 0;
vec_foreach (i, pool_indexes_to_free)
{
ip4_reass_t *reass = pool_elt_at_index (rt->pool, i[0]);
- u32 before = vec_len (vec_drop_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;
- }
- }
- ip4_reass_on_timeout (vm, rm, reass, &vec_drop_timeout);
- u32 after = vec_len (vec_drop_timeout);
- rt->buffers_n -= (after - before);
+ ip4_reass_on_timeout (vm, rm, reass);
ip4_reass_free (rm, rt, reass);
}
/* *INDENT-ON* */
clib_spinlock_unlock (&rt->lock);
}
- while (vec_len (vec_drop_timeout) > 0)
- {
- vlib_frame_t *f = vlib_get_frame_to_node (vm, rm->ip4_drop_idx);
- u32 *to_next = vlib_frame_vector_args (f);
- u32 n_left_to_next = VLIB_FRAME_SIZE - f->n_vectors;
- int trace_frame = 0;
- while (vec_len (vec_drop_timeout) > 0 && n_left_to_next > 0)
- {
- u32 bi = vec_pop (vec_drop_timeout);
- vlib_buffer_t *b = vlib_get_buffer (vm, 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;
- }
- else
- {
- trace_frame = 1;
- }
- }
- b->error = node->errors[IP4_ERROR_REASS_TIMEOUT];
- to_next[0] = bi;
- ++f->n_vectors;
- to_next += 1;
- n_left_to_next -= 1;
- IP4_REASS_DEBUG_BUFFER (bi, enqueue_drop_timeout_walk);
- }
- f->frame_flags |= (trace_frame * VLIB_FRAME_TRACE);
- vlib_put_frame_to_node (vm, rm->ip4_drop_idx, f);
- }
-
vec_free (pool_indexes_to_free);
- vec_free (vec_drop_timeout);
if (event_data)
{
_vec_len (event_data) = 0;
return 0;
}
-static vlib_node_registration_t ip4_reass_expire_node;
-
/* *INDENT-OFF* */
VLIB_REGISTER_NODE (ip4_reass_expire_node, static) = {
.function = ip4_reass_walk_expired,
}
u32 sum_reass_n = 0;
- u64 sum_buffers_n = 0;
ip4_reass_t *reass;
uword thread_index;
const uword nthreads = vlib_num_workers () + 1;
/* *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,
"Maximum configured concurrent IP4 reassemblies per worker-thread: %lu\n",
(long unsigned) rm->max_reass_n);
- vlib_cli_output (vm, "Buffers in use: %lu\n",
- (long unsigned) sum_buffers_n);
return 0;
}
Code Review / vpp.git / blobdiff