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hash += 1; n_left_from -= 1; p += 1; } } static_always_inline u32 compute_ethernet_key (void *p) { u16 ethertype = 0, l2hdr_sz = 0; ethernet_header_t *eh = (ethernet_header_t *) p; ethertype = clib_net_to_host_u16 (eh->type); l2hdr_sz = sizeof (ethernet_header_t); if (ethernet_frame_is_tagged (ethertype)) { ethernet_vlan_header_t *vlan = (ethernet_vlan_header_t *) (eh + 1); ethertype = clib_net_to_host_u16 (vlan->type); l2hdr_sz += sizeof (*vlan); while (ethernet_frame_is_tagged (ethertype)) { vlan++; ethertype = clib_net_to_host_u16 (vlan->type); l2hdr_sz += sizeof (*vlan); } } if (ethertype == ETHERNET_TYPE_IP4) { ip4_header_t *ip4 = (ip4_header_t *) (p + l2hdr_sz); return compute_ip4_key (ip4); } else if (ethertype == ETHERNET_TYPE_IP6) { ip6_header_t *ip6 = (ip6_header_t *) (p + l2hdr_sz); return compute_ip6_key (ip6); } return 0; } void vnet_crc32c_5tuple_ethernet_func (void **p, u32 *hash, u32 n_packets) { u32 n_left_from = n_packets; while (n_left_from >= 8) { clib_prefetch_load (p[4]); clib_prefetch_load (p[5]); clib_prefetch_load (p[6]); clib_prefetch_load (p[7]); hash[0] = compute_ethernet_key (p[0]); hash[1] = compute_ethernet_key (p[1]); hash[2] = compute_ethernet_key (p[2]); hash[3] = compute_ethernet_key (p[3]); hash += 4; n_left_from -= 4; p += 4; } while (n_left_from > 0) { hash[0] = compute_ethernet_key (p[0]); hash += 1; n_left_from -= 1; p += 1; } } VNET_REGISTER_HASH_FUNCTION (crc32c_5tuple, static) = { .name = "crc32c-5tuple", .description = "IPv4/IPv6 header and TCP/UDP ports", .priority = 50, .function[VNET_HASH_FN_TYPE_ETHERNET] = vnet_crc32c_5tuple_ethernet_func, .function[VNET_HASH_FN_TYPE_IP] = vnet_crc32c_5tuple_ip_func, }; #endif