diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/vnet/ip6-nd/ip6_nd.c | 64 | ||||
| -rw-r--r-- | src/vnet/ip6-nd/ip6_nd_inline.h | 101 |
2 files changed, 104 insertions, 61 deletions
diff --git a/src/vnet/ip6-nd/ip6_nd.c b/src/vnet/ip6-nd/ip6_nd.c index 311cbf743f7..772c811ae20 100644 --- a/src/vnet/ip6-nd/ip6_nd.c +++ b/src/vnet/ip6-nd/ip6_nd.c @@ -16,6 +16,7 @@ */ #include <vnet/ip6-nd/ip6_nd.h> +#include <vnet/ip6-nd/ip6_nd_inline.h> #include <vnet/ip-neighbor/ip_neighbor.h> #include <vnet/ip-neighbor/ip_neighbor_dp.h> @@ -48,21 +49,12 @@ typedef struct ip6_nd_t_ static ip6_link_delegate_id_t ip6_nd_delegate_id; static ip6_nd_t *ip6_nd_pool; - -typedef enum -{ - ICMP6_NEIGHBOR_SOLICITATION_NEXT_DROP, - ICMP6_NEIGHBOR_SOLICITATION_NEXT_REPLY, - ICMP6_NEIGHBOR_SOLICITATION_N_NEXT, -} icmp6_neighbor_solicitation_or_advertisement_next_t; - static_always_inline uword icmp6_neighbor_solicitation_or_advertisement (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * frame, uword is_solicitation) { - vnet_main_t *vnm = vnet_get_main (); ip6_main_t *im = &ip6_main; uword n_packets = frame->n_vectors; u32 *from, *to_next; @@ -70,7 +62,6 @@ icmp6_neighbor_solicitation_or_advertisement (vlib_main_t * vm, icmp6_neighbor_discovery_option_type_t option_type; vlib_node_runtime_t *error_node = vlib_node_get_runtime (vm, ip6_icmp_input_node.index); - int bogus_length; from = vlib_frame_vector_args (frame); n_left_from = n_packets; @@ -251,57 +242,8 @@ icmp6_neighbor_solicitation_or_advertisement (vlib_main_t * vm, if (is_solicitation && error0 == ICMP6_ERROR_NONE) { - vnet_sw_interface_t *sw_if0; - ethernet_interface_t *eth_if0; - ethernet_header_t *eth0; - - /* dst address is either source address or the all-nodes mcast addr */ - if (!ip6_sadd_unspecified) - ip0->dst_address = ip0->src_address; - else - ip6_set_reserved_multicast_address (&ip0->dst_address, - IP6_MULTICAST_SCOPE_link_local, - IP6_MULTICAST_GROUP_ID_all_hosts); - - ip0->src_address = h0->target_address; - ip0->hop_limit = 255; - h0->icmp.type = ICMP6_neighbor_advertisement; - - sw_if0 = vnet_get_sup_sw_interface (vnm, sw_if_index0); - ASSERT (sw_if0->type == VNET_SW_INTERFACE_TYPE_HARDWARE); - eth_if0 = - ethernet_get_interface (ðernet_main, sw_if0->hw_if_index); - if (eth_if0 && o0) - { - clib_memcpy (o0->ethernet_address, ð_if0->address, 6); - o0->header.type = - ICMP6_NEIGHBOR_DISCOVERY_OPTION_target_link_layer_address; - } - - h0->advertisement_flags = clib_host_to_net_u32 - (ICMP6_NEIGHBOR_ADVERTISEMENT_FLAG_SOLICITED - | ICMP6_NEIGHBOR_ADVERTISEMENT_FLAG_OVERRIDE); - - h0->icmp.checksum = 0; - h0->icmp.checksum = - ip6_tcp_udp_icmp_compute_checksum (vm, p0, ip0, - &bogus_length); - ASSERT (bogus_length == 0); - - /* Reuse current MAC header, copy SMAC to DMAC and - * interface MAC to SMAC */ - vlib_buffer_advance (p0, -ethernet_buffer_header_size (p0)); - eth0 = vlib_buffer_get_current (p0); - clib_memcpy (eth0->dst_address, eth0->src_address, 6); - if (eth_if0) - clib_memcpy (eth0->src_address, ð_if0->address, 6); - - /* Setup input and output sw_if_index for packet */ - ASSERT (vnet_buffer (p0)->sw_if_index[VLIB_RX] == sw_if_index0); - vnet_buffer (p0)->sw_if_index[VLIB_TX] = sw_if_index0; - vnet_buffer (p0)->sw_if_index[VLIB_RX] = - vnet_main.local_interface_sw_if_index; - + icmp6_send_neighbor_advertisement (vm, p0, ip0, h0, o0, + sw_if_index0); n_advertisements_sent++; } diff --git a/src/vnet/ip6-nd/ip6_nd_inline.h b/src/vnet/ip6-nd/ip6_nd_inline.h new file mode 100644 index 00000000000..ad0c3a3a79b --- /dev/null +++ b/src/vnet/ip6-nd/ip6_nd_inline.h @@ -0,0 +1,101 @@ +/* + * + * ip6_nd_inline.h: ip6 neighbor discovery inline + * + * Copyright (c) 2021 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#ifndef __IP6_ND_INLINE_H__ +#define __IP6_ND_INLINE_H__ + +#include <vnet/ethernet/ethernet.h> +#include <vnet/ip/icmp46_packet.h> +#include <vnet/ip/ip6.h> + +typedef enum +{ + ICMP6_NEIGHBOR_SOLICITATION_NEXT_DROP, + ICMP6_NEIGHBOR_SOLICITATION_NEXT_REPLY, + ICMP6_NEIGHBOR_SOLICITATION_N_NEXT, +} icmp6_neighbor_solicitation_or_advertisement_next_t; + +static_always_inline void +icmp6_send_neighbor_advertisement ( + vlib_main_t *vm, vlib_buffer_t *b, ip6_header_t *ip6_h, + icmp6_neighbor_solicitation_or_advertisement_header_t *icmp6_nsa, + icmp6_neighbor_discovery_ethernet_link_layer_address_option_t + *icmp6_nd_ell_addr, + u32 sw_if_index0) +{ + vnet_main_t *vnm = vnet_get_main (); + vnet_sw_interface_t *sw_if; + ethernet_interface_t *eth_if; + ethernet_header_t *eth; + int bogus_length; + + /* dst address is either source address or the all-nodes mcast addr */ + if (!ip6_address_is_unspecified (&ip6_h->src_address)) + ip6_h->dst_address = ip6_h->src_address; + else + ip6_set_reserved_multicast_address (&ip6_h->dst_address, + IP6_MULTICAST_SCOPE_link_local, + IP6_MULTICAST_GROUP_ID_all_hosts); + + ip6_h->src_address = icmp6_nsa->target_address; + ip6_h->hop_limit = 255; + icmp6_nsa->icmp.type = ICMP6_neighbor_advertisement; + + sw_if = vnet_get_sup_sw_interface (vnm, sw_if_index0); + ASSERT (sw_if->type == VNET_SW_INTERFACE_TYPE_HARDWARE); + eth_if = ethernet_get_interface (ðernet_main, sw_if->hw_if_index); + if (eth_if && icmp6_nd_ell_addr) + { + clib_memcpy (icmp6_nd_ell_addr->ethernet_address, ð_if->address, 6); + icmp6_nd_ell_addr->header.type = + ICMP6_NEIGHBOR_DISCOVERY_OPTION_target_link_layer_address; + } + + icmp6_nsa->advertisement_flags = + clib_host_to_net_u32 (ICMP6_NEIGHBOR_ADVERTISEMENT_FLAG_SOLICITED | + ICMP6_NEIGHBOR_ADVERTISEMENT_FLAG_OVERRIDE); + + icmp6_nsa->icmp.checksum = 0; + icmp6_nsa->icmp.checksum = + ip6_tcp_udp_icmp_compute_checksum (vm, b, ip6_h, &bogus_length); + ASSERT (bogus_length == 0); + + /* Reuse current MAC header, copy SMAC to DMAC and + * interface MAC to SMAC */ + vlib_buffer_advance (b, -ethernet_buffer_header_size (b)); + eth = vlib_buffer_get_current (b); + clib_memcpy (eth->dst_address, eth->src_address, 6); + if (eth_if) + clib_memcpy (eth->src_address, ð_if->address, 6); + + /* Setup input and output sw_if_index for packet */ + ASSERT (vnet_buffer (b)->sw_if_index[VLIB_RX] == sw_if_index0); + vnet_buffer (b)->sw_if_index[VLIB_TX] = sw_if_index0; + vnet_buffer (b)->sw_if_index[VLIB_RX] = + vnet_main.local_interface_sw_if_index; +} + +#endif /* included_ip6_nd_inline_h */ + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ |