// trace operation counter
u32 trace_op_counter;
// next index - used by non-feature node
- u8 next_index;
+ u32 next_index;
+ // error next index - used by non-feature node
+ u32 error_next_index;
+ // is_feature flag stored for non-inline code use
+ bool is_feature;
// minimum fragment length for this reassembly - used to estimate MTU
u16 min_fragment_length;
// number of fragments for this reassembly
}
always_inline void
-ip6_reass_drop_all (vlib_main_t * vm, ip6_reass_main_t * rm,
- ip6_reass_t * reass)
+ip6_reass_drop_all (vlib_main_t * vm, vlib_node_runtime_t * node,
+ ip6_reass_main_t * rm, ip6_reass_t * reass,
+ bool is_feature)
{
u32 range_bi = reass->first_bi;
vlib_buffer_t *range_b;
}
range_bi = range_vnb->ip.reass.next_range_bi;
}
- vlib_buffer_free (vm, to_free, vec_len (to_free));
+ /* send to next_error_index */
+ if (!(is_feature))
+ {
+ u32 n_left_to_next, *to_next, next_index;
+
+ next_index = reass->error_next_index;
+ u32 bi = ~0;
+
+ while (vec_len (to_free) > 0)
+ {
+ vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
+
+ while (vec_len (to_free) > 0 && n_left_to_next > 0)
+ {
+ bi = vec_pop (to_free);
+
+ if (~0 != bi)
+ {
+ 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, next_index);
+ }
+ }
+ vlib_put_next_frame (vm, node, next_index, n_left_to_next);
+ }
+ }
+ else
+ {
+ vlib_buffer_free (vm, to_free, vec_len (to_free));
+ }
vec_free (to_free);
}
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 * icmp_bi, bool is_feature)
{
if (~0 == reass->first_bi)
{
return;
}
- vlib_buffer_t *b = vlib_get_buffer (vm, reass->first_bi);
- if (0 == vnet_buffer (b)->ip.reass.fragment_first)
+ if (is_feature)
{
- *icmp_bi = reass->first_bi;
- if (PREDICT_FALSE (b->flags & VLIB_BUFFER_IS_TRACED))
- {
- ip6_reass_add_trace (vm, node, rm, reass, reass->first_bi,
- ICMP_ERROR_RT_EXCEEDED, 0);
- }
- // fragment with offset zero received - send icmp message back
- if (b->flags & VLIB_BUFFER_NEXT_PRESENT)
+ vlib_buffer_t *b = vlib_get_buffer (vm, reass->first_bi);
+ if (0 == vnet_buffer (b)->ip.reass.fragment_first)
{
- // separate first buffer from chain and steer it towards icmp node
- b->flags &= ~VLIB_BUFFER_NEXT_PRESENT;
- reass->first_bi = b->next_buffer;
- }
- else
- {
- reass->first_bi = vnet_buffer (b)->ip.reass.next_range_bi;
+ *icmp_bi = reass->first_bi;
+ if (PREDICT_FALSE (b->flags & VLIB_BUFFER_IS_TRACED))
+ {
+ ip6_reass_add_trace (vm, node, rm, reass, reass->first_bi,
+ ICMP_ERROR_RT_EXCEEDED, 0);
+ }
+ // fragment with offset zero received - send icmp message back
+ if (b->flags & VLIB_BUFFER_NEXT_PRESENT)
+ {
+ // separate first buffer from chain and steer it towards icmp node
+ b->flags &= ~VLIB_BUFFER_NEXT_PRESENT;
+ reass->first_bi = b->next_buffer;
+ }
+ else
+ {
+ reass->first_bi = vnet_buffer (b)->ip.reass.next_range_bi;
+ }
+ icmp6_error_set_vnet_buffer (b, ICMP6_time_exceeded,
+ ICMP6_time_exceeded_fragment_reassembly_time_exceeded,
+ 0);
}
- icmp6_error_set_vnet_buffer (b, ICMP6_time_exceeded,
- ICMP6_time_exceeded_fragment_reassembly_time_exceeded,
- 0);
}
- ip6_reass_drop_all (vm, rm, reass);
+ ip6_reass_drop_all (vm, node, rm, reass, is_feature);
}
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_kv_t * kv, u32 * icmp_bi, u8 * do_handoff)
+ ip6_reass_kv_t * kv, u32 * icmp_bi, u8 * do_handoff,
+ bool is_feature)
{
ip6_reass_t *reass = NULL;
f64 now = vlib_time_now (rm->vlib_main);
if (now > reass->last_heard + rm->timeout)
{
- ip6_reass_on_timeout (vm, node, rm, reass, icmp_bi);
+ ip6_reass_on_timeout (vm, node, rm, reass, icmp_bi, is_feature);
ip6_reass_free (rm, rt, reass);
reass = NULL;
}
reass->first_bi = ~0;
reass->last_packet_octet = ~0;
reass->data_len = 0;
+ reass->is_feature = is_feature;
++rt->reass_n;
}
vlib_buffer_t *fb = vlib_get_buffer (vm, *bi0);
vnet_buffer_opaque_t *fvnb = vnet_buffer (fb);
reass->next_index = fvnb->ip.reass.next_index; // store next_index before it's overwritten
+ reass->error_next_index = fvnb->ip.reass.error_next_index; // store error_next_index before it is overwritten
+
fvnb->ip.reass.ip6_frag_hdr_offset =
(u8 *) frag_hdr - (u8 *) vlib_buffer_get_current (fb);
ip6_header_t *fip = vlib_buffer_get_current (fb);
else
{
// overlapping fragment - not allowed by RFC 8200
- ip6_reass_drop_all (vm, rm, reass);
+ ip6_reass_drop_all (vm, node, rm, reass, is_feature);
ip6_reass_free (rm, rt, reass);
if (PREDICT_FALSE (fb->flags & VLIB_BUFFER_IS_TRACED))
{
ip6_reass_t *reass =
ip6_reass_find_or_create (vm, node, rm, rt, &kv, &icmp_bi,
- &do_handoff);
+ &do_handoff, is_feature);
if (PREDICT_FALSE (do_handoff))
{
vlib_node_increment_counter (vm, node->node_index,
IP6_ERROR_REASS_FRAGMENT_CHAIN_TOO_LONG,
1);
- ip6_reass_drop_all (vm, rm, reass);
+ ip6_reass_drop_all (vm, node, rm, reass, is_feature);
ip6_reass_free (rm, rt, reass);
goto next_packet;
break;
case IP6_REASS_RC_NO_BUF:
vlib_node_increment_counter (vm, node->node_index,
IP6_ERROR_REASS_NO_BUF, 1);
- ip6_reass_drop_all (vm, rm, reass);
+ ip6_reass_drop_all (vm, node, rm, reass, is_feature);
ip6_reass_free (rm, rt, reass);
goto next_packet;
break;
case IP6_REASS_RC_INTERNAL_ERROR:
+ /* drop everything and start with a clean slate */
vlib_node_increment_counter (vm, node->node_index,
IP6_ERROR_REASS_INTERNAL_ERROR,
1);
- ip6_reass_drop_all (vm, rm, reass);
+ ip6_reass_drop_all (vm, node, rm, reass, is_feature);
ip6_reass_free (rm, rt, reass);
goto next_packet;
break;
}
else
{
- next0 = IP6_REASSEMBLY_NEXT_DROP;
+ if (is_feature)
+ {
+ next0 = IP6_REASSEMBLY_NEXT_DROP;
+ }
+ else
+ {
+ vnet_buffer_opaque_t *fvnb = vnet_buffer (b0);
+ next0 = fvnb->ip.reass.error_next_index;
+ }
error0 = IP6_ERROR_REASS_LIMIT_REACHED;
}
b->flags &= ~VLIB_BUFFER_IS_TRACED;
}
}
- ip6_reass_on_timeout (vm, node, rm, reass, &icmp_bi);
+ ip6_reass_on_timeout (vm, node, rm, reass, &icmp_bi, reass->is_feature);
if (~0 != icmp_bi)
{
vec_add1 (vec_icmp_bi, icmp_bi);
Code Review / vpp.git / blobdiff