On 01/06/2012 07:01 PM, Pravin B Shelar wrote:
> --- a/lib/packets.h
> +++ b/lib/packets.h
> @@ -464,4 +464,14 @@ void *snap_compose(struct ofpbuf *, const uint8_t
> eth_dst[ETH_ADDR_LEN],
> const uint8_t eth_src[ETH_ADDR_LEN],
> unsigned int oui, uint16_t snap_type, size_t size);
>
> +static inline int ipv6_addr_is_zero(const struct in6_addr *addr)
> +{
> + const uint32_t *a = (const uint32_t *)&addr->s6_addr[0];
> + int i, ret = 0;
> +
> + for (i = 0; i < 4; i++) {
> + ret += a[i];
> + }
> + return !ret;
> +}
There's already an IN6_IS_ADDR_UNSPECIFIED macro defined in in.h, which every
platform should have for RFC compliance. Alternately, there's ipv6_addr_any()
in ipv6.h that defines an optimized Linux version:
static inline int ipv6_addr_any(const struct in6_addr *a)
{
return (a->s6_addr32[0] | a->s6_addr32[1] |
a->s6_addr32[2] | a->s6_addr32[3]) == 0;
}
-Brian
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