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lib: add utility to get the next index in a vrf

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Add if_vrf_lookup_by_index_next to get the next ifindex in a vrf
given the previous ifindex or 0 for the first.

Signed-off-by: Pat Ruddy <pat@voltanet.io>
This commit is contained in:
Pat Ruddy 2020-10-01 12:06:50 +01:00
parent 0d020cd6d9
commit 0760a74d2f
2 changed files with 36 additions and 0 deletions
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34
lib/if.c
View File

@ -351,6 +351,40 @@ struct interface *if_lookup_by_index(ifindex_t ifindex, vrf_id_t vrf_id)
return NULL;
}
/* Interface existance check by index. */
struct interface *if_vrf_lookup_by_index_next(ifindex_t ifindex,
vrf_id_t vrf_id)
{
struct vrf *vrf = vrf_lookup_by_id(vrf_id);
struct interface *tmp_ifp;
bool found = false;
if (!vrf)
return NULL;
if (ifindex == 0) {
tmp_ifp = RB_MIN(if_index_head, &vrf->ifaces_by_index);
/* skip the vrf interface */
if (tmp_ifp && if_is_vrf(tmp_ifp))
ifindex = tmp_ifp->ifindex;
else
return tmp_ifp;
}
RB_FOREACH (tmp_ifp, if_index_head, &vrf->ifaces_by_index) {
if (found) {
/* skip the vrf interface */
if (tmp_ifp && if_is_vrf(tmp_ifp))
continue;
else
return tmp_ifp;
}
if (tmp_ifp->ifindex == ifindex)
found = true;
}
return NULL;
}
const char *ifindex2ifname(ifindex_t ifindex, vrf_id_t vrf_id)
{
struct interface *ifp;

2
lib/if.h
View File

@ -513,6 +513,8 @@ extern struct interface *if_create_name(const char *name, vrf_id_t vrf_id);
/* Create new interface, adds to index list only */
extern struct interface *if_create_ifindex(ifindex_t ifindex, vrf_id_t vrf_id);
extern struct interface *if_lookup_by_index(ifindex_t, vrf_id_t vrf_id);
extern struct interface *if_vrf_lookup_by_index_next(ifindex_t ifindex,
vrf_id_t vrf_id);
extern struct interface *if_lookup_by_index_all_vrf(ifindex_t);
extern struct interface *if_lookup_exact_address(const void *matchaddr,
int family, vrf_id_t vrf_id);