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Merge pull request #20835 from xnumad/nib-route-hide-on-link-prefixes

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gnrc/ipv6: `nib route`: hide off-link PLEs
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benpicco 2024-09-24 15:42:48 +00:00 committed by GitHub
commit 5c06502c4d
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2 changed files with 21 additions and 8 deletions
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3
sys/include/net/gnrc/ipv6/nib/ft.h
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@ -112,7 +112,8 @@ void gnrc_ipv6_nib_ft_del(const ipv6_addr_t *dst, unsigned dst_len);
*
* The iteration over all forwarding table entries in the NIB includes all
* entries added via @p gnrc_ipv6_nib_ft_add() and entries that are currently
* in the Destination Cache, in the Prefix List, and in the Default Router List.
* in the Destination Cache, in the Prefix List (only if they're on-link),
* and in the Default Router List.
*
* Usage example:
*

26
sys/net/gnrc/network_layer/ipv6/nib/nib_ft.c
View File

@ -132,14 +132,26 @@ bool gnrc_ipv6_nib_ft_iter(const ipv6_addr_t *next_hop, unsigned iface,
while ((offl = _nib_offl_iter(offl))) {
assert(offl->mode != 0);
if ((offl->next_hop != NULL) &&
((iface == 0) || (iface == _nib_onl_get_if(offl->next_hop))) &&
((next_hop == NULL) || ipv6_addr_equal(&offl->next_hop->ipv6,
next_hop))) {
_nib_ft_get(offl, fte);
*state = offl;
return true;
if (offl->next_hop == NULL) {
/* 'holey' NIB / dangling reference.
* there is no next hop (not even an interface) */
continue;
}
if (offl->mode == _PL && !(offl->flags & _PFX_ON_LINK)) {
/* prefix list entry is off-link */
continue;
}
if (iface && iface != _nib_onl_get_if(offl->next_hop)) {
/* interface does not match */
continue;
}
if (next_hop && !ipv6_addr_equal(&offl->next_hop->ipv6, next_hop)) {
/* next hop does not match */
continue;
}
_nib_ft_get(offl, fte);
*state = offl;
return true;
}
*state = NULL;
}