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lib: export access-lists shared functions

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These functions are going to be used by the new filter northbound
implementation.

Signed-off-by: Rafael Zalamena <rzalamena@opensourcerouting.org>
This commit is contained in:
Rafael Zalamena 2019-11-08 14:46:17 -03:00
parent a4d7621fc8
commit 4cf2450162
2 changed files with 92 additions and 71 deletions
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75
lib/filter.c
View File

@ -34,65 +34,6 @@ DEFINE_MTYPE_STATIC(LIB, ACCESS_LIST, "Access List")
DEFINE_MTYPE_STATIC(LIB, ACCESS_LIST_STR, "Access List Str")
DEFINE_MTYPE_STATIC(LIB, ACCESS_FILTER, "Access Filter")
struct filter_cisco {
/* Cisco access-list */
int extended;
struct in_addr addr;
struct in_addr addr_mask;
struct in_addr mask;
struct in_addr mask_mask;
};
struct filter_zebra {
/* If this filter is "exact" match then this flag is set. */
int exact;
/* Prefix information. */
struct prefix prefix;
};
/* Filter element of access list */
struct filter {
/* For doubly linked list. */
struct filter *next;
struct filter *prev;
/* Filter type information. */
enum filter_type type;
/* Sequence number */
int64_t seq;
/* Cisco access-list */
int cisco;
union {
struct filter_cisco cfilter;
struct filter_zebra zfilter;
} u;
};
/* List of access_list. */
struct access_list_list {
struct access_list *head;
struct access_list *tail;
};
/* Master structure of access_list. */
struct access_master {
/* List of access_list which name is number. */
struct access_list_list num;
/* List of access_list which name is string. */
struct access_list_list str;
/* Hook function which is executed when new access_list is added. */
void (*add_hook)(struct access_list *);
/* Hook function which is executed when access_list is deleted. */
void (*delete_hook)(struct access_list *);
};
/* Static structure for mac access_list's master. */
static struct access_master access_master_mac = {
{NULL, NULL},
@ -129,7 +70,7 @@ static struct access_master *access_master_get(afi_t afi)
}
/* Allocate new filter structure. */
static struct filter *filter_new(void)
struct filter *filter_new(void)
{
return XCALLOC(MTYPE_ACCESS_FILTER, sizeof(struct filter));
}
@ -210,7 +151,7 @@ static void access_list_free(struct access_list *access)
}
/* Delete access_list from access_master and free it. */
static void access_list_delete(struct access_list *access)
void access_list_delete(struct access_list *access)
{
struct filter *filter;
struct filter *next;
@ -356,7 +297,7 @@ struct access_list *access_list_lookup(afi_t afi, const char *name)
/* Get access list from list of access_list. If there isn't matched
access_list create new one and return it. */
static struct access_list *access_list_get(afi_t afi, const char *name)
struct access_list *access_list_get(afi_t afi, const char *name)
{
struct access_list *access;
@ -406,7 +347,7 @@ void access_list_delete_hook(void (*func)(struct access_list *access))
}
/* Calculate new sequential number. */
static int64_t filter_new_seq_get(struct access_list *access)
int64_t filter_new_seq_get(struct access_list *access)
{
int64_t maxseq;
int64_t newseq;
@ -447,7 +388,7 @@ static bool access_list_empty(struct access_list *access)
/* Delete filter from specified access_list. If there is hook
function execute it. */
static void access_list_filter_delete(struct access_list *access,
void access_list_filter_delete(struct access_list *access,
struct filter *filter)
{
struct access_master *master;
@ -478,7 +419,7 @@ static void access_list_filter_delete(struct access_list *access,
}
/* Add new filter to the end of specified access_list. */
static void access_list_filter_add(struct access_list *access,
void access_list_filter_add(struct access_list *access,
struct filter *filter)
{
struct filter *replace;
@ -541,7 +482,7 @@ static void access_list_filter_add(struct access_list *access,
host A single host address
*/
static struct filter *filter_lookup_cisco(struct access_list *access,
struct filter *filter_lookup_cisco(struct access_list *access,
struct filter *mnew)
{
struct filter *mfilter;
@ -573,7 +514,7 @@ static struct filter *filter_lookup_cisco(struct access_list *access,
return NULL;
}
static struct filter *filter_lookup_zebra(struct access_list *access,
struct filter *filter_lookup_zebra(struct access_list *access,
struct filter *mnew)
{
struct filter *mfilter;

80
lib/filter.h
View File

@ -23,6 +23,7 @@
#define _ZEBRA_FILTER_H
#include "if.h"
#include "prefix.h"
#ifdef __cplusplus
extern "C" {
@ -41,6 +42,50 @@ enum filter_type { FILTER_DENY, FILTER_PERMIT, FILTER_DYNAMIC };
enum access_type { ACCESS_TYPE_STRING, ACCESS_TYPE_NUMBER };
struct filter_cisco {
/* Cisco access-list */
int extended;
struct in_addr addr;
struct in_addr addr_mask;
struct in_addr mask;
struct in_addr mask_mask;
};
struct filter_zebra {
/* If this filter is "exact" match then this flag is set. */
int exact;
/* Prefix information. */
struct prefix prefix;
};
/* Forward declaration of access-list struct. */
struct access_list;
/* Filter element of access list */
struct filter {
/* For doubly linked list. */
struct filter *next;
struct filter *prev;
/* Parent access-list pointer. */
struct access_list *acl;
/* Filter type information. */
enum filter_type type;
/* Sequence number */
int64_t seq;
/* Cisco access-list */
int cisco;
union {
struct filter_cisco cfilter;
struct filter_zebra zfilter;
} u;
};
/* Access list */
struct access_list {
char *name;
@ -57,6 +102,28 @@ struct access_list {
struct filter *tail;
};
/* List of access_list. */
struct access_list_list {
struct access_list *head;
struct access_list *tail;
};
/* Master structure of access_list. */
struct access_master {
/* List of access_list which name is number. */
struct access_list_list num;
/* List of access_list which name is string. */
struct access_list_list str;
/* Hook function which is executed when new access_list is added. */
void (*add_hook)(struct access_list *);
/* Hook function which is executed when access_list is deleted. */
void (*delete_hook)(struct access_list *);
};
/* Prototypes for access-list. */
extern void access_list_init(void);
extern void access_list_reset(void);
@ -66,6 +133,19 @@ extern struct access_list *access_list_lookup(afi_t, const char *);
extern enum filter_type access_list_apply(struct access_list *access,
const void *object);
struct access_list *access_list_get(afi_t afi, const char *name);
void access_list_delete(struct access_list *access);
struct filter *filter_new(void);
void access_list_filter_add(struct access_list *access,
struct filter *filter);
void access_list_filter_delete(struct access_list *access,
struct filter *filter);
int64_t filter_new_seq_get(struct access_list *access);
struct filter *filter_lookup_cisco(struct access_list *access,
struct filter *mnew);
struct filter *filter_lookup_zebra(struct access_list *access,
struct filter *mnew);
#ifdef __cplusplus
}
#endif