52 /* for software rss hash support */
58  * Hash an IPv4 2-tuple.
75  * Hash an IPv4 4-tuple.
102  * The protocol code may wish to do a software hash of the given
103  * tuple.  This depends upon the currently configured RSS hash types.
115 	uint32_t hash;  in rss_proto_software_hash_v4()  local
118 	 * Next, choose the hash type depending upon the protocol  in rss_proto_software_hash_v4()
123 		hash = rss_hash_ip4_4tuple(s, sp, d, dp);  in rss_proto_software_hash_v4()
124 		*hashval = hash;  in rss_proto_software_hash_v4()
129 		hash = rss_hash_ip4_4tuple(s, sp, d, dp);  in rss_proto_software_hash_v4()
130 		*hashval = hash;  in rss_proto_software_hash_v4()
134 		/* RSS doesn't hash on other protocols like SCTP; so 2-tuple */  in rss_proto_software_hash_v4()
135 		hash = rss_hash_ip4_2tuple(s, d);  in rss_proto_software_hash_v4()
136 		*hashval = hash;  in rss_proto_software_hash_v4()
151  * The protocol code may wish to do a software hash of the given
152  * tuple.  This depends upon the currently configured RSS hash types.
161 	uint32_t hash;  in xps_proto_software_hash_v4()  local
164 	 * Next, choose the hash type depending upon the protocol  in xps_proto_software_hash_v4()
169 		hash = rss_hash_ip4_4tuple(d, dp, s, sp);  in xps_proto_software_hash_v4()
171 		return (hash);  in xps_proto_software_hash_v4()
174 		hash = rss_hash_ip4_4tuple(d, dp, s, sp);  in xps_proto_software_hash_v4()
176 		return (hash);  in xps_proto_software_hash_v4()
178 		/* RSS doesn't hash on other protocols like SCTP; so 2-tuple */  in xps_proto_software_hash_v4()
179 		hash = rss_hash_ip4_2tuple(d, s);  in xps_proto_software_hash_v4()
181 		return (hash);  in xps_proto_software_hash_v4()
197  * Returns 0 if a hash was done, -1 if no hash was done, +1 if
257 	 * then we shouldn't just "trust" the 2-tuple hash.  We need  in rss_mbuf_software_hash_v4()
258 	 * a 4-tuple hash.  in rss_mbuf_software_hash_v4()
306 	 * Decode enough information to make a hash decision.  in rss_mbuf_software_hash_v4()
308 	 * XXX TODO: does the hardware hash on 4-tuple if IP  in rss_mbuf_software_hash_v4()
340 		/* Default to 2-tuple hash */  in rss_mbuf_software_hash_v4()
357  * If an existing RSS hash exists and it matches what the configured
360  * If there's an existing RSS hash but the desired hash is different,
361  * or if there's no useful RSS hash, then calculate it via
377 		/* mbuf has a valid hash already; don't need to modify it */  in rss_soft_m2cpuid_v4()
380 		/* hash was done; update */  in rss_soft_m2cpuid_v4()
385 		/* no hash was done */  in rss_soft_m2cpuid_v4()