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/*
* Copyright (c) 2020 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 __LCP_ITF_PAIR_H__
#define __LCP_ITF_PAIR_H__
#include <vnet/dpo/dpo.h>
#include <vnet/adj/adj.h>
#include <vnet/ip/ip_types.h>
#include <plugins/linux-cp/lcp.h>
extern vlib_log_class_t lcp_itf_pair_logger;
#define LCP_ITF_PAIR_DBG(...) \
vlib_log_debug (lcp_itf_pair_logger, __VA_ARGS__);
#define LCP_ITF_PAIR_INFO(...) \
vlib_log_info (lcp_itf_pair_logger, __VA_ARGS__);
#define LCP_ITF_PAIR_NOTICE(...) \
vlib_log_notice (lcp_itf_pair_logger, __VA_ARGS__);
#define LCP_ITF_PAIR_WARN(...) \
vlib_log_warn (lcp_itf_pair_logger, __VA_ARGS__);
#define LCP_ITF_PAIR_ERR(...) vlib_log_err (lcp_itf_pair_logger, __VA_ARGS__);
#define foreach_lcp_itf_pair_flag _ (STALE, 0, "stale")
typedef enum lip_flag_t_
{
#define _(a, b, c) LIP_FLAG_##a = (1 << b),
foreach_lcp_itf_pair_flag
#undef _
} lip_flag_t;
typedef enum
{
LCP_ITF_HOST_TAP = 0,
LCP_ITF_HOST_TUN = 1,
} lip_host_type_t;
#define N_LCP_ITF_HOST (LCP_ITF_HOST_TUN + 1)
typedef struct lcp_itf_phy_adj
{
adj_index_t adj_index[N_AF];
} lcp_itf_phy_adj_t;
/**
* A pair of interfaces
*/
typedef struct lcp_itf_pair_t_
{
u32 lip_host_sw_if_index; /* VPP's sw_if_index for the host tap */
u32 lip_phy_sw_if_index; /* VPP's sw_if_index for the phy */
u8 *lip_host_name; /* linux's name for the tap */
u32 lip_vif_index; /* linux's index for the tap */
u8 *lip_namespace; /* namespace in which the tap lives */
lip_host_type_t lip_host_type; /* type of host interface */
lcp_itf_phy_adj_t lip_phy_adjs; /* adjacencies for phy l3 interface */
lip_flag_t lip_flags; /* Flags */
u8 lip_rewrite_len; /* The length of an L2 MAC rewrite */
f64 lip_create_ts; /* Timestamp of creation */
} lcp_itf_pair_t;
extern lcp_itf_pair_t *lcp_itf_pair_pool;
extern vlib_node_registration_t lcp_ethernet_node;
u8 *format_lcp_itf_pair (u8 *s, va_list *args);
void lcp_itf_pair_show (u32 phy_sw_if_index);
u32 lcp_itf_num_pairs (void);
/**
* Get an interface-pair object from its VPP index
*/
extern lcp_itf_pair_t *lcp_itf_pair_get (index_t index);
/**
* Find a interface-pair object from the host interface
*
* @param host_sw_if_index host interface
* @return VPP's object index
*/
extern index_t lcp_itf_pair_find_by_vif (u32 vif_index);
/**
* Create an interface-pair
*
* @return error code
*/
extern int lcp_itf_pair_add (u32 host_sw_if_index, u32 phy_sw_if_index,
u8 *host_name, u32 host_index,
lip_host_type_t host_type, u8 *ns);
extern int lcp_itf_pair_del (u32 phy_sw_if_index);
/**
* Create an interface-pair from PHY sw_if_index and tap name.
*
* @return error code
*/
extern int lcp_itf_pair_create (u32 phy_sw_if_index, u8 *host_if_name,
lip_host_type_t host_if_type, u8 *ns,
u32 *host_sw_if_indexp);
/**
* Delete a LCP_ITF_PAIR
*/
extern int lcp_itf_pair_delete (u32 phy_sw_if_index);
/**
* Callback function invoked during a walk of all interface-pairs
*/
typedef walk_rc_t (*lcp_itf_pair_walk_cb_t) (index_t index, void *ctx);
/**
* Walk/visit each of the interface pairs
*/
extern void lcp_itf_pair_walk (lcp_itf_pair_walk_cb_t cb, void *ctx);
/**
* Begin and End the replace process
*/
extern int lcp_itf_pair_replace_begin (void);
extern int lcp_itf_pair_replace_end (void);
/**
* Retreive the pair in the DP
*/
extern index_t *lip_db_by_phy;
extern u32 *lip_db_by_host;
always_inline index_t
lcp_itf_pair_find_by_phy (u32 phy_sw_if_index)
{
if (phy_sw_if_index >= vec_len (lip_db_by_phy))
return INDEX_INVALID;
return (lip_db_by_phy[phy_sw_if_index]);
}
always_inline index_t
lcp_itf_pair_find_by_host (u32 host_sw_if_index)
{
if (host_sw_if_index >= vec_len (lip_db_by_host))
return INDEX_INVALID;
return (lip_db_by_host[host_sw_if_index]);
}
typedef void (*lcp_itf_pair_add_cb_t) (lcp_itf_pair_t *);
typedef void (*lcp_itf_pair_del_cb_t) (lcp_itf_pair_t *);
typedef struct lcp_itf_pair_vft
{
lcp_itf_pair_add_cb_t pair_add_fn;
lcp_itf_pair_del_cb_t pair_del_fn;
} lcp_itf_pair_vft_t;
void lcp_itf_pair_register_vft (lcp_itf_pair_vft_t *lcp_itf_vft);
/**
* sub-interface auto creation/deletion for LCP
*/
void lcp_set_auto_subint (u8 is_auto);
int lcp_auto_subint (void);
/**
* sync state changes from VPP into LCP
*/
void lcp_set_sync (u8 is_auto);
int lcp_sync (void);
/* Set TAP and Linux host link state */
void lcp_itf_set_link_state (const lcp_itf_pair_t *lip, u8 state);
/* Set any VPP L3 addresses on Linux host device */
void lcp_itf_set_interface_addr (const lcp_itf_pair_t *lip);
/* Sync all state from VPP to a specific Linux device, all sub-interfaces
* of a hardware interface, or all interfaces in the system.
*
* Note: in some circumstances, this syncer will (have to) make changes to
* the VPP interface, for example if its MTU is greater than its parent.
* See the function for rationale.
*/
void lcp_itf_pair_sync_state (lcp_itf_pair_t *lip);
void lcp_itf_pair_sync_state_hw (vnet_hw_interface_t *hi);
void lcp_itf_pair_sync_state_all ();
/*
* fd.io coding-style-patch-verification: ON
*
* Local Variables:
* eval: (c-set-style "gnu")
* End:
*/
#endif
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