static __inline int
INP_MPORT_HASH_TCP(in_addr_t faddr, in_addr_t laddr,
in_port_t fport, in_port_t lport)
{
return toeplitz_hash(
toeplitz_rawhash_addrport(faddr, laddr, fport, lport));
}
uint32_t
sfxge_toeplitz_hash(sfxge_t *sp, unsigned int addr_size,
uint8_t *src_addr, uint16_t src_port, uint8_t *dst_addr, uint16_t dst_port)
{
uint32_t hash = 0;
unsigned pos = 0;
hash ^= toeplitz_hash(sp->s_toeplitz_cache, src_addr, pos, addr_size);
pos += addr_size;
hash ^= toeplitz_hash(sp->s_toeplitz_cache, dst_addr, pos, addr_size);
pos += addr_size;
if (src_port != 0 || dst_port != 0) {
hash ^= toeplitz_hash(sp->s_toeplitz_cache,
(const uint8_t *)&src_port, pos, sizeof (src_port));
pos += sizeof (src_port);
hash ^= toeplitz_hash(sp->s_toeplitz_cache,
(const uint8_t *)&dst_port, pos, sizeof (dst_port));
}
return (hash);
}
/*
* Toeplitz hash functions - the idea is to match the hardware.
*/
static __inline int
INP_MPORT_HASH_UDP(in_addr_t faddr, in_addr_t laddr,
in_port_t fport, in_port_t lport)
{
/*
* NOTE: laddr could be multicast, since UDP socket could be
* bound to multicast address.
*/
if (IN_MULTICAST(ntohl(faddr)) || IN_MULTICAST(ntohl(laddr))) {
/* XXX handle multicast on CPU0 for now */
return 0;
}
return toeplitz_hash(toeplitz_rawhash_addr(faddr, laddr));
}
uint32_t
rss_hash(u_int datalen, const uint8_t *data)
{
switch (rss_hashalgo) {
case RSS_HASH_TOEPLITZ:
return (toeplitz_hash(sizeof(rss_key), rss_key, datalen,
data));
case RSS_HASH_NAIVE:
return (rss_naive_hash(sizeof(rss_key), rss_key, datalen,
data));
default:
panic("%s: unsupported/unknown hashalgo %d", __func__,
rss_hashalgo);
}
}