041eacc816
This plugin provides load balancing for VPP in a way that is largely inspired from Google's MagLev: http://research.google.com/pubs/pub44824.html More info in the README.md Change-Id: I1223f495d5c2d5200808a398504119f2830337e9 Signed-off-by: Pierre Pfister <ppfister@cisco.com>
73 lines
2.1 KiB
C
73 lines
2.1 KiB
C
/*
|
|
* Copyright (c) 2016 Cisco and/or its affiliates.
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
|
* you may not use this file except in compliance with the License.
|
|
* You may obtain a copy of the License at:
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
* See the License for the specific language governing permissions and
|
|
* limitations under the License.
|
|
*/
|
|
|
|
#include <lb/util.h>
|
|
|
|
void ip46_prefix_normalize(ip46_address_t *prefix, u8 plen)
|
|
{
|
|
if (plen == 0) {
|
|
prefix->as_u64[0] = 0;
|
|
prefix->as_u64[1] = 0;
|
|
} else if (plen <= 64) {
|
|
prefix->as_u64[0] &= clib_host_to_net_u64(0xffffffffffffffffL << (64 - plen));
|
|
prefix->as_u64[1] = 0;
|
|
} else {
|
|
prefix->as_u64[1] &= clib_host_to_net_u64(0xffffffffffffffffL << (128 - plen));
|
|
}
|
|
|
|
}
|
|
|
|
uword unformat_ip46_prefix (unformat_input_t * input, va_list * args)
|
|
{
|
|
ip46_address_t *ip46 = va_arg (*args, ip46_address_t *);
|
|
u8 *len = va_arg (*args, u8 *);
|
|
ip46_type_t type = va_arg (*args, ip46_type_t);
|
|
|
|
u32 l;
|
|
if ((type != IP46_TYPE_IP6) && unformat(input, "%U/%u", unformat_ip4_address, &ip46->ip4, &l)) {
|
|
if (l > 32)
|
|
return 0;
|
|
*len = l + 96;
|
|
ip46->pad[0] = ip46->pad[1] = ip46->pad[2] = 0;
|
|
} else if ((type != IP46_TYPE_IP4) && unformat(input, "%U/%u", unformat_ip6_address, &ip46->ip6, &l)) {
|
|
if (l > 128)
|
|
return 0;
|
|
*len = l;
|
|
} else {
|
|
return 0;
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
u8 *format_ip46_prefix (u8 * s, va_list * args)
|
|
{
|
|
ip46_address_t *ip46 = va_arg (*args, ip46_address_t *);
|
|
u32 len = va_arg (*args, u32); //va_arg cannot use u8 or u16
|
|
ip46_type_t type = va_arg (*args, ip46_type_t);
|
|
|
|
int is_ip4 = 0;
|
|
if (type == IP46_TYPE_IP4)
|
|
is_ip4 = 1;
|
|
else if (type == IP46_TYPE_IP6)
|
|
is_ip4 = 0;
|
|
else
|
|
is_ip4 = (len >= 96) && ip46_address_is_ip4(ip46);
|
|
|
|
return is_ip4 ?
|
|
format(s, "%U/%d", format_ip4_address, &ip46->ip4, len - 96):
|
|
format(s, "%U/%d", format_ip6_address, &ip46->ip6, len);
|
|
}
|
|
|