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/*
* Copyright (c) 2016 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_ip6_hop_by_hop_ioam_h__
#define __included_ip6_hop_by_hop_ioam_h__
#include <vnet/ip/ip6_hop_by_hop_packet.h>
#include <vnet/ip/ip.h>
#define MAX_IP6_HBH_OPTION 256
/* To determine whether a node is decap MS bit is set */
#define IOAM_DECAP_BIT 0x80000000
#define IOAM_DEAP_ENABLED(opaque_data) (opaque_data & IOAM_DECAP_BIT)
#define IOAM_SET_DECAP(opaque_data) \
(opaque_data |= IOAM_DECAP_BIT)
#define IOAM_MASK_DECAP_BIT(x) (x & ~IOAM_DECAP_BIT)
/*
* Stores the run time flow data of hbh options
*/
typedef struct
{
u32 ctx[MAX_IP6_HBH_OPTION];
u8 flow_name[64];
} flow_data_t;
typedef struct
{
/* The current rewrite we're using */
u8 *rewrite;
/* Trace data processing callback */
void *ioam_end_of_path_cb;
/* Configuration data */
/* Adjacency */
ip6_address_t adj;
#define IOAM_HBYH_ADD 0
#define IOAM_HBYH_MOD 1
#define IOAM_HBYH_POP 2
u8 ioam_flag;
/* time scale transform. Joy. */
u32 unix_time_0;
f64 vlib_time_0;
/* Trace option */
u8 has_trace_option;
/* Pot option */
u8 has_pot_option;
/* Per Packet Counter option */
u8 has_seqno_option;
/* Enabling analyis of iOAM data on decap node */
u8 has_analyse_option;
/* Array of function pointers to ADD and POP HBH option handling routines */
u8 options_size[MAX_IP6_HBH_OPTION];
int (*add_options[MAX_IP6_HBH_OPTION]) (u8 * rewrite_string,
u8 * rewrite_size);
int (*pop_options[MAX_IP6_HBH_OPTION]) (vlib_buffer_t * b,
ip6_header_t * ip,
ip6_hop_by_hop_option_t * opt);
int (*get_sizeof_options[MAX_IP6_HBH_OPTION]) (u32 * rewrite_size);
int (*config_handler[MAX_IP6_HBH_OPTION]) (void *data, u8 disable);
/* Array of function pointers to handle hbh options being used with classifier */
u32 (*flow_handler[MAX_IP6_HBH_OPTION]) (u32 flow_ctx, u8 add);
flow_data_t *flows;
/* convenience */
vlib_main_t *vlib_main;
vnet_main_t *vnet_main;
} ip6_hop_by_hop_ioam_main_t;
extern ip6_hop_by_hop_ioam_main_t ip6_hop_by_hop_ioam_main;
extern u8 *format_path_map (u8 * s, va_list * args);
extern clib_error_t *ip6_ioam_enable (int has_trace_option,
int has_pot_option,
int has_seqno_option,
int has_analyse_option);
extern int ip6_ioam_set_destination (ip6_address_t * addr, u32 mask_width,
u32 vrf_id, int is_add, int is_pop,
int is_none);
extern clib_error_t *clear_ioam_rewrite_fn (void);
static inline u8
is_zero_ip4_address (ip4_address_t * a)
{
return (a->as_u32 == 0);
}
static inline void
copy_ip6_address (ip6_address_t * dst, ip6_address_t * src)
{
dst->as_u64[0] = src->as_u64[0];
dst->as_u64[1] = src->as_u64[1];
}
static inline void
set_zero_ip6_address (ip6_address_t * a)
{
a->as_u64[0] = 0;
a->as_u64[1] = 0;
}
static inline u8
cmp_ip6_address (ip6_address_t * a1, ip6_address_t * a2)
{
return ((a1->as_u64[0] == a2->as_u64[0])
&& (a1->as_u64[1] == a2->as_u64[1]));
}
static inline u8
is_zero_ip6_address (ip6_address_t * a)
{
return ((a->as_u64[0] == 0) && (a->as_u64[1] == 0));
}
int ip6_hbh_add_register_option (u8 option,
u8 size,
int rewrite_options (u8 * rewrite_string,
u8 * size));
int ip6_hbh_add_unregister_option (u8 option);
int ip6_hbh_pop_register_option (u8 option,
int options (vlib_buffer_t * b,
ip6_header_t * ip,
ip6_hop_by_hop_option_t * opt));
int ip6_hbh_pop_unregister_option (u8 option);
int
ip6_hbh_get_sizeof_register_option (u8 option,
int get_sizeof_hdr_options (u32 *
rewrite_size));
int
ip6_ioam_set_rewrite (u8 ** rwp, int has_trace_option,
int has_pot_option, int has_seq_no);
int
ip6_hbh_config_handler_register (u8 option,
int config_handler (void *data, u8 disable));
int ip6_hbh_config_handler_unregister (u8 option);
int ip6_hbh_flow_handler_register (u8 option,
u32 ioam_flow_handler (u32 flow_ctx,
u8 add));
int ip6_hbh_flow_handler_unregister (u8 option);
u8 *get_flow_name_from_flow_ctx (u32 flow_ctx);
static inline flow_data_t *
get_flow (u32 index)
{
flow_data_t *flow = NULL;
ip6_hop_by_hop_ioam_main_t *hm = &ip6_hop_by_hop_ioam_main;
if (pool_is_free_index (hm->flows, index))
return NULL;
flow = pool_elt_at_index (hm->flows, index);
return flow;
}
static inline u32
get_flow_data_from_flow_ctx (u32 flow_ctx, u8 option)
{
flow_data_t *flow = NULL;
ip6_hop_by_hop_ioam_main_t *hm = &ip6_hop_by_hop_ioam_main;
u32 index;
index = IOAM_MASK_DECAP_BIT (flow_ctx);
//flow = pool_elt_at_index (hm->flows, index);
flow = &hm->flows[index];
return (flow->ctx[option]);
}
static inline u8
is_seqno_enabled (void)
{
return (ip6_hop_by_hop_ioam_main.has_seqno_option);
}
int ip6_trace_profile_setup ();
#endif /* __included_ip6_hop_by_hop_ioam_h__ */
/*
* fd.io coding-style-patch-verification: ON
*
* Local Variables:
* eval: (c-set-style "gnu")
* End:
*/
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