/* * ethernet/arp.c: IP v4 ARP node * * Copyright (c) 2010 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. */ #include <vnet/ethernet/arp_packet.h> #include <vnet/ethernet/ethernet.h> #include <vnet/ip/format.h> u8 * format_ethernet_arp_opcode (u8 * s, va_list * va) { ethernet_arp_opcode_t o = va_arg (*va, ethernet_arp_opcode_t); char *t = 0; switch (o) { #define _(f) case ETHERNET_ARP_OPCODE_##f: t = #f; break; foreach_ethernet_arp_opcode; #undef _ default: return format (s, "unknown 0x%x", o); } return format (s, "%s", t); } u8 * format_ethernet_arp_hardware_type (u8 * s, va_list * va) { ethernet_arp_hardware_type_t h = va_arg (*va, ethernet_arp_hardware_type_t); char *t = 0; switch (h) { #define _(n,f) case n: t = #f; break; foreach_ethernet_arp_hardware_type; #undef _ default: return format (s, "unknown 0x%x", h); } return format (s, "%s", t); } u8 * format_ethernet_arp_header (u8 * s, va_list * va) { ethernet_arp_header_t *a = va_arg (*va, ethernet_arp_header_t *); u32 max_header_bytes = va_arg (*va, u32); u32 indent; u16 l2_type, l3_type; if (max_header_bytes != 0 && sizeof (a[0]) > max_header_bytes) return format (s, "ARP header truncated"); l2_type = clib_net_to_host_u16 (a->l2_type); l3_type = clib_net_to_host_u16 (a->l3_type); indent = format_get_indent (s); s = format (s, "%U, type %U/%U, address size %d/%d", format_ethernet_arp_opcode, clib_net_to_host_u16 (a->opcode), format_ethernet_arp_hardware_type, l2_type, format_ethernet_type, l3_type, a->n_l2_address_bytes, a->n_l3_address_bytes); if (l2_type == ETHERNET_ARP_HARDWARE_TYPE_ethernet && l3_type == ETHERNET_TYPE_IP4) { s = format (s, "\n%U%U/%U -> %U/%U", format_white_space, indent, format_mac_address_t, &a->ip4_over_ethernet[0].mac, format_ip4_address, &a->ip4_over_ethernet[0].ip4, format_mac_address_t, &a->ip4_over_ethernet[1].mac, format_ip4_address, &a->ip4_over_ethernet[1].ip4); } else { uword n2 = a->n_l2_address_bytes; uword n3 = a->n_l3_address_bytes; s = format (s, "\n%U%U/%U -> %U/%U", format_white_space, indent, format_hex_bytes, a->data + 0 * n2 + 0 * n3, n2, format_hex_bytes, a->data + 1 * n2 + 0 * n3, n3, format_hex_bytes, a->data + 1 * n2 + 1 * n3, n2, format_hex_bytes, a->data + 2 * n2 + 1 * n3, n3); } return s; } /* * fd.io coding-style-patch-verification: ON * * Local Variables: * eval: (c-set-style "gnu") * End: */