diff options
Diffstat (limited to 'net/ipv6/ioam6.c')
| -rw-r--r-- | net/ipv6/ioam6.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/net/ipv6/ioam6.c b/net/ipv6/ioam6.c index 571f0e4d9cf3..a35b6fdbc93e 100644 --- a/net/ipv6/ioam6.c +++ b/net/ipv6/ioam6.c @@ -630,6 +630,20 @@ struct ioam6_namespace *ioam6_namespace(struct net *net, __be16 id) return rhashtable_lookup_fast(&nsdata->namespaces, &id, rht_ns_params); } +#define IOAM6_MASK_SHORT_FIELDS 0xff1ffc00 +#define IOAM6_MASK_WIDE_FIELDS 0x00e00000 + +u8 ioam6_trace_compute_nodelen(u32 trace_type) +{ + u8 nodelen = hweight32(trace_type & IOAM6_MASK_SHORT_FIELDS) + * (sizeof(__be32) / 4); + + nodelen += hweight32(trace_type & IOAM6_MASK_WIDE_FIELDS) + * (sizeof(__be64) / 4); + + return nodelen; +} + static void __ioam6_fill_trace_data(struct sk_buff *skb, struct ioam6_namespace *ns, struct ioam6_trace_hdr *trace, |