Differential D3423 Diff 8150 head/sys/netinet6/in6_rss.c

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head/sys/netinet6/in6_rss.c

Show First 20 Lines • Show All 95 Lines • ▼ Show 20 Lines	rss_hash_ip6_4tuple(const struct in6_addr *src, u_short srcport,
bcopy(dst, &data[datalen], sizeof(*dst));		bcopy(dst, &data[datalen], sizeof(*dst));
datalen += sizeof(*dst);		datalen += sizeof(*dst);
bcopy(&srcport, &data[datalen], sizeof(srcport));		bcopy(&srcport, &data[datalen], sizeof(srcport));
datalen += sizeof(srcport);		datalen += sizeof(srcport);
bcopy(&dstport, &data[datalen], sizeof(dstport));		bcopy(&dstport, &data[datalen], sizeof(dstport));
datalen += sizeof(dstport);		datalen += sizeof(dstport);
return (rss_hash(datalen, data));		return (rss_hash(datalen, data));
}		}

		/*
		* Calculate an appropriate ipv6 2-tuple or 4-tuple given the given
		* IPv6 source/destination address, UDP or TCP source/destination ports
		* and the protocol type.
		*
		* The protocol code may wish to do a software hash of the given
		* tuple. This depends upon the currently configured RSS hash types.
		*
		* This assumes that the packet in question isn't a fragment.
		*
		* It also assumes the packet source/destination address
		* are in "incoming" packet order (ie, source is "far" address.)
		*/
		int
		rss_proto_software_hash_v6(const struct in6_addr s, const struct in6_addr d,
		u_short sp, u_short dp, int proto,
		uint32_t hashval, uint32_t hashtype)
		{
		uint32_t hash;

		/*
		* Next, choose the hash type depending upon the protocol
		* identifier.
		*/
		if ((proto == IPPROTO_TCP) &&
		(rss_gethashconfig() & RSS_HASHTYPE_RSS_TCP_IPV6)) {
		hash = rss_hash_ip6_4tuple(s, sp, d, dp);
		*hashval = hash;
		*hashtype = M_HASHTYPE_RSS_TCP_IPV6;
		return (0);
		} else if ((proto == IPPROTO_UDP) &&
		(rss_gethashconfig() & RSS_HASHTYPE_RSS_UDP_IPV6)) {
		hash = rss_hash_ip6_4tuple(s, sp, d, dp);
		*hashval = hash;
		*hashtype = M_HASHTYPE_RSS_UDP_IPV6;
		return (0);
		} else if (rss_gethashconfig() & RSS_HASHTYPE_RSS_IPV6) {
		/* RSS doesn't hash on other protocols like SCTP; so 2-tuple */
		hash = rss_hash_ip6_2tuple(s, d);
		*hashval = hash;
		*hashtype = M_HASHTYPE_RSS_IPV6;
		return (0);
		}

		/* No configured available hashtypes! */
		printf("%s: no available hashtypes!\n", __func__);
		return (-1);
		}