ip0->hop_limit = im->host_config.ttl;
ip1->hop_limit = im->host_config.ttl;
- if (ip6_address_is_link_local_unicast (&ip0->dst_address))
- {
- ethernet_header_t *eth0;
- u8 tmp_mac[6];
- /* For link local, reuse current MAC header by sawpping
- * SMAC to DMAC instead of IP6 lookup since link local
- * is not in the IP6 FIB */
- vlib_buffer_reset (p0);
- eth0 = vlib_buffer_get_current (p0);
- clib_memcpy (tmp_mac, eth0->dst_address, 6);
- clib_memcpy (eth0->dst_address, eth0->src_address, 6);
- clib_memcpy (eth0->src_address, tmp_mac, 6);
- vnet_buffer (p0)->sw_if_index[VLIB_TX] =
- vnet_buffer (p0)->sw_if_index[VLIB_RX];
- next0 = ICMP6_ECHO_REQUEST_NEXT_OUTPUT;
- }
- else
- {
- /* Determine the correct lookup fib indices... */
- fib_index0 = vec_elt (im->fib_index_by_sw_if_index,
- vnet_buffer (p0)->sw_if_index[VLIB_RX]);
- vnet_buffer (p0)->sw_if_index[VLIB_TX] = fib_index0;
- }
-
- if (ip6_address_is_link_local_unicast (&ip1->dst_address))
- {
- ethernet_header_t *eth1;
- u8 tmp_mac[6];
- /* For link local, reuse current MAC header by sawpping
- * SMAC to DMAC instead of IP6 lookup since link local
- * is not in the IP6 FIB */
- vlib_buffer_reset (p1);
- eth1 = vlib_buffer_get_current (p1);
- clib_memcpy (tmp_mac, eth1->dst_address, 6);
- clib_memcpy (eth1->dst_address, eth1->src_address, 6);
- clib_memcpy (eth1->src_address, tmp_mac, 6);
- vnet_buffer (p1)->sw_if_index[VLIB_TX] =
- vnet_buffer (p1)->sw_if_index[VLIB_RX];
- next1 = ICMP6_ECHO_REQUEST_NEXT_OUTPUT;
- }
- else
- {
- /* Determine the correct lookup fib indices... */
- fib_index1 = vec_elt (im->fib_index_by_sw_if_index,
- vnet_buffer (p1)->sw_if_index[VLIB_RX]);
- vnet_buffer (p1)->sw_if_index[VLIB_TX] = fib_index1;
- }
-
- vnet_buffer (p0)->sw_if_index[VLIB_RX]
- = vnet_main.local_interface_sw_if_index;
- vnet_buffer (p1)->sw_if_index[VLIB_RX]
- = vnet_main.local_interface_sw_if_index;
+ /* Determine the correct lookup fib indices... */
+ fib_index0 = vec_elt (im->fib_index_by_sw_if_index,
+ vnet_buffer (p0)->sw_if_index[VLIB_RX]);
+ vnet_buffer (p0)->sw_if_index[VLIB_TX] = fib_index0;
+ /* Determine the correct lookup fib indices... */
+ fib_index1 = vec_elt (im->fib_index_by_sw_if_index,
+ vnet_buffer (p1)->sw_if_index[VLIB_RX]);
+ vnet_buffer (p1)->sw_if_index[VLIB_TX] = fib_index1;
/* verify speculative enqueues, maybe switch current next frame */
/* if next0==next1==next_index then nothing special needs to be done */
ip0->hop_limit = im->host_config.ttl;
- if (ip6_address_is_link_local_unicast (&ip0->dst_address))
- {
- ethernet_header_t *eth0;
- u8 tmp_mac[6];
- /* For link local, reuse current MAC header by sawpping
- * SMAC to DMAC instead of IP6 lookup since link local
- * is not in the IP6 FIB */
- vlib_buffer_reset (p0);
- eth0 = vlib_buffer_get_current (p0);
- clib_memcpy (tmp_mac, eth0->dst_address, 6);
- clib_memcpy (eth0->dst_address, eth0->src_address, 6);
- clib_memcpy (eth0->src_address, tmp_mac, 6);
- vnet_buffer (p0)->sw_if_index[VLIB_TX] =
- vnet_buffer (p0)->sw_if_index[VLIB_RX];
- next0 = ICMP6_ECHO_REQUEST_NEXT_OUTPUT;
- }
- else
- {
- fib_index0 = vec_elt (im->fib_index_by_sw_if_index,
- vnet_buffer (p0)->sw_if_index[VLIB_RX]);
- vnet_buffer (p0)->sw_if_index[VLIB_TX] = fib_index0;
- }
- vnet_buffer (p0)->sw_if_index[VLIB_RX]
- = vnet_main.local_interface_sw_if_index;
+ /* if the packet is link local, we'll bounce through the link-local
+ * table with the RX interface correctly set */
+ fib_index0 = vec_elt (im->fib_index_by_sw_if_index,
+ vnet_buffer (p0)->sw_if_index[VLIB_RX]);
+ vnet_buffer (p0)->sw_if_index[VLIB_TX] = fib_index0;
/* Verify speculative enqueue, maybe switch current next frame */
vlib_validate_buffer_enqueue_x1 (vm, node, next_index,
{
b = vlib_get_buffer (vm, b->next_buffer);
b->current_length = 0;
+ // XXX: Buffer leak???
}
}
+
+ /* Add IP header and ICMPv6 header including a 4 byte data field */
+ int headroom = sizeof (ip6_header_t) + sizeof (icmp46_header_t) + 4;
+
+ /* Verify that we're not falling off the edge */
+ if (p0->current_data - headroom < -VLIB_BUFFER_PRE_DATA_SIZE)
+ {
+ next0 = IP6_ICMP_ERROR_NEXT_DROP;
+ error0 = ICMP6_ERROR_DROP;
+ goto error;
+ }
+
+ vlib_buffer_advance (p0, -headroom);
+ vnet_buffer (p0)->sw_if_index[VLIB_TX] = ~0;
+ p0->flags |= VNET_BUFFER_F_LOCALLY_ORIGINATED;
p0->current_length =
p0->current_length > 1280 ? 1280 : p0->current_length;
- /* Add IP header and ICMPv6 header including a 4 byte data field */
- vlib_buffer_advance (p0,
- -sizeof (ip6_header_t) -
- sizeof (icmp46_header_t) - 4);
out_ip0 = vlib_buffer_get_current (p0);
icmp0 = (icmp46_header_t *) & out_ip0[1];
{
next0 = IP6_ICMP_ERROR_NEXT_DROP;
error0 = ICMP6_ERROR_DROP;
+ goto error;
}
/* Fill icmp header fields */
ip6_tcp_udp_icmp_compute_checksum (vm, p0, out_ip0,
&bogus_length);
-
-
/* Update error status */
if (error0 == ICMP6_ERROR_NONE)
error0 = icmp6_icmp_type_to_error (icmp0->type);
+
+ error:
vlib_error_count (vm, node->node_index, error0, 1);
/* Verify speculative enqueue, maybe switch current next frame */
.n_next_nodes = IP6_ICMP_ERROR_N_NEXT,
.next_nodes = {
- [IP6_ICMP_ERROR_NEXT_DROP] = "ip6-drop",
+ [IP6_ICMP_ERROR_NEXT_DROP] = "error-drop",
[IP6_ICMP_ERROR_NEXT_LOOKUP] = "ip6-lookup",
},
foreach_icmp6_code;
#undef _
- memset (cm->input_next_index_by_type,
- ICMP_INPUT_NEXT_DROP, sizeof (cm->input_next_index_by_type));
- memset (cm->max_valid_code_by_type, 0, sizeof (cm->max_valid_code_by_type));
+ clib_memset (cm->input_next_index_by_type,
+ ICMP_INPUT_NEXT_DROP, sizeof (cm->input_next_index_by_type));
+ clib_memset (cm->max_valid_code_by_type, 0,
+ sizeof (cm->max_valid_code_by_type));
#define _(a,n,t) cm->max_valid_code_by_type[ICMP6_##a] = clib_max (cm->max_valid_code_by_type[ICMP6_##a], n);
foreach_icmp6_code;
#undef _
- memset (cm->min_valid_hop_limit_by_type, 0,
- sizeof (cm->min_valid_hop_limit_by_type));
+ clib_memset (cm->min_valid_hop_limit_by_type, 0,
+ sizeof (cm->min_valid_hop_limit_by_type));
cm->min_valid_hop_limit_by_type[ICMP6_router_solicitation] = 255;
cm->min_valid_hop_limit_by_type[ICMP6_router_advertisement] = 255;
cm->min_valid_hop_limit_by_type[ICMP6_neighbor_solicitation] = 255;
cm->min_valid_hop_limit_by_type[ICMP6_neighbor_advertisement] = 255;
cm->min_valid_hop_limit_by_type[ICMP6_redirect] = 255;
- memset (cm->min_valid_length_by_type, sizeof (icmp46_header_t),
- sizeof (cm->min_valid_length_by_type));
+ clib_memset (cm->min_valid_length_by_type, sizeof (icmp46_header_t),
+ sizeof (cm->min_valid_length_by_type));
cm->min_valid_length_by_type[ICMP6_router_solicitation] =
sizeof (icmp6_neighbor_discovery_header_t);
cm->min_valid_length_by_type[ICMP6_router_advertisement] =
Code Review / vpp.git / blobdiff