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/*
* 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.
*/
#ifndef included_ethernet_arp_packet_h
#define included_ethernet_arp_packet_h
#define foreach_ethernet_arp_hardware_type \
_ (0, reserved) \
_ (1, ethernet) \
_ (2, experimental_ethernet) \
_ (3, ax_25) \
_ (4, proteon_pronet_token_ring) \
_ (5, chaos) \
_ (6, ieee_802) \
_ (7, arcnet) \
_ (8, hyperchannel) \
_ (9, lanstar) \
_ (10, autonet) \
_ (11, localtalk) \
_ (12, localnet) \
_ (13, ultra_link) \
_ (14, smds) \
_ (15, frame_relay) \
_ (16, atm) \
_ (17, hdlc) \
_ (18, fibre_channel) \
_ (19, atm19) \
_ (20, serial_line) \
_ (21, atm21) \
_ (22, mil_std_188_220) \
_ (23, metricom) \
_ (24, ieee_1394) \
_ (25, mapos) \
_ (26, twinaxial) \
_ (27, eui_64) \
_ (28, hiparp) \
_ (29, iso_7816_3) \
_ (30, arpsec) \
_ (31, ipsec_tunnel) \
_ (32, infiniband) \
_ (33, cai) \
_ (34, wiegand) \
_ (35, pure_ip) \
_ (36, hw_exp1) \
_ (256, hw_exp2)
#define foreach_ethernet_arp_opcode \
_ (reserved) \
_ (request) \
_ (reply) \
_ (reverse_request) \
_ (reverse_reply) \
_ (drarp_request) \
_ (drarp_reply) \
_ (drarp_error) \
_ (inarp_request) \
_ (inarp_reply) \
_ (arp_nak) \
_ (mars_request) \
_ (mars_multi) \
_ (mars_mserv) \
_ (mars_join) \
_ (mars_leave) \
_ (mars_nak) \
_ (mars_unserv) \
_ (mars_sjoin) \
_ (mars_sleave) \
_ (mars_grouplist_request) \
_ (mars_grouplist_reply) \
_ (mars_redirect_map) \
_ (mapos_unarp) \
_ (exp1) \
_ (exp2)
typedef enum
{
#define _(n,f) ETHERNET_ARP_HARDWARE_TYPE_##f = (n),
foreach_ethernet_arp_hardware_type
#undef _
} ethernet_arp_hardware_type_t;
typedef enum
{
#define _(f) ETHERNET_ARP_OPCODE_##f,
foreach_ethernet_arp_opcode
#undef _
ETHERNET_ARP_N_OPCODE,
} ethernet_arp_opcode_t;
typedef enum
{
IP4_ARP_NEXT_DROP,
IP4_ARP_N_NEXT,
} ip4_arp_next_t;
typedef enum
{
IP4_ARP_ERROR_DROP,
IP4_ARP_ERROR_REQUEST_SENT,
IP4_ARP_ERROR_NON_ARP_ADJ,
IP4_ARP_ERROR_REPLICATE_DROP,
IP4_ARP_ERROR_REPLICATE_FAIL,
IP4_ARP_ERROR_NO_SOURCE_ADDRESS,
} ip4_arp_error_t;
/* *INDENT-OFF* */
typedef CLIB_PACKED (struct {
u8 ethernet[6];
ip4_address_t ip4;
}) ethernet_arp_ip4_over_ethernet_address_t;
/* *INDENT-ON* */
typedef struct
{
u16 l2_type;
u16 l3_type;
u8 n_l2_address_bytes;
u8 n_l3_address_bytes;
u16 opcode;
union
{
ethernet_arp_ip4_over_ethernet_address_t ip4_over_ethernet[2];
/* Others... */
u8 data[0];
};
} ethernet_arp_header_t;
typedef enum ethernet_arp_entry_flags_t_
{
ETHERNET_ARP_IP4_ENTRY_FLAG_STATIC = (1 << 0),
ETHERNET_ARP_IP4_ENTRY_FLAG_DYNAMIC = (1 << 1),
ETHERNET_ARP_IP4_ENTRY_FLAG_NO_FIB_ENTRY = (1 << 2),
} __attribute__ ((packed)) ethernet_arp_entry_flags_t;
typedef struct
{
u32 sw_if_index;
ip4_address_t ip4_address;
u8 ethernet_address[6];
ethernet_arp_entry_flags_t flags;
u64 cpu_time_last_updated;
/**
* The index of the adj-fib entry created
*/
fib_node_index_t fib_entry_index;
} ethernet_arp_ip4_entry_t;
ethernet_arp_ip4_entry_t *ip4_neighbor_entries (u32 sw_if_index);
u8 *format_ethernet_arp_ip4_entry (u8 * s, va_list * va);
void send_ip4_garp (vlib_main_t * vm, const vnet_hw_interface_t * hi);
void send_ip4_garp_w_addr (vlib_main_t * vm,
const ip4_address_t * ip4_addr,
const vnet_hw_interface_t * hi);
#endif /* included_ethernet_arp_packet_h */
/*
* fd.io coding-style-patch-verification: ON
*
* Local Variables:
* eval: (c-set-style "gnu")
* End:
*/
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