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lib: add a function to get the VRF or loopback interface

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Add a function to find the VRF or the loopback interface: the loopback
interface for the default VRF and the VRF master interface otherwise.

Signed-off-by: Louis Scalbert <louis.scalbert@6wind.com>
This commit is contained in:
Louis Scalbert 2022-04-22 18:08:08 +02:00
parent acf31ef73b
commit e7192e9d24
2 changed files with 15 additions and 0 deletions
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14
lib/if.c
View File

@ -564,6 +564,20 @@ size_t if_lookup_by_hwaddr(const uint8_t *hw_addr, size_t addrsz,
return count;
}
/* Get the VRF loopback interface, i.e. the loopback on the default VRF
* or the VRF interface.
*/
struct interface *if_get_vrf_loopback(vrf_id_t vrf_id)
{
struct interface *ifp = NULL;
struct vrf *vrf = vrf_lookup_by_id(vrf_id);
FOR_ALL_INTERFACES (vrf, ifp)
if (if_is_loopback(ifp))
return ifp;
return NULL;
}
/* Get interface by name if given name interface doesn't exist create
one. */

1
lib/if.h
View File

@ -532,6 +532,7 @@ static inline bool if_address_is_local(const void *matchaddr, int family,
struct vrf;
extern struct interface *if_lookup_by_name_vrf(const char *name, struct vrf *vrf);
extern struct interface *if_lookup_by_name(const char *ifname, vrf_id_t vrf_id);
extern struct interface *if_get_vrf_loopback(vrf_id_t vrf_id);
extern struct interface *if_get_by_name(const char *ifname, vrf_id_t vrf_id,
const char *vrf_name);