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ubgpsuite
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[lonetix/bgp] Add quick access functions for BGP UPDATE fields

This commit is contained in:
Lorenzo Cogotti 2021-10-15 12:04:42 +02:00
parent 4bde2c79a3
commit 62d3f846e6
1 changed files with 17 additions and 0 deletions
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17
lonetix/include/df/bgp/bgp.h
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@ -559,6 +559,23 @@ typedef ALIGNED(1, struct) {
Uint8 attrs[FLEX_ARRAY];
} Bgpattrseg;
FORCE_INLINE Bgpwithdrawnseg *BGP_WITHDRAWN(const Bgpupdate *msg)
{
return (Bgpwithdrawnseg *) msg->data;
}
FORCE_INLINE Bgpattrseg *BGP_ATTRIBUTES(const Bgpupdate *msg)
{
const Bgpwithdrawnseg *w = BGP_WITHDRAWN(msg);
return (Bgpattrseg *) (w->nlri + BE16(w->len));
}
FORCE_INLINE void *BGP_ANNOUNCEMENTS(const Bgpupdate *msg)
{
const Bgpattrseg *tpa = BGP_ATTRIBUTES(msg);
return (void *) (tpa->attrs + BE16(tpa->len));
}
// NOTE: NLRI segment is handled with no struct
/// Attribute length has an additional byte.