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authorPierre Pfister <ppfister@cisco.com>2016-08-04 16:13:09 +0100
committerDave Barach <openvpp@barachs.net>2016-08-11 14:05:40 +0000
commit041eacc81656d2ed5bc01b96b15a7d03a1700f13 (patch)
treef1cded1a27f92bab90fec8e5ea9d991ee2ff7eb5 /plugins/lb-plugin/lb/lb_test.c
parent3590ac5881261c95a3c575360e24903d60fac392 (diff)
VPP-130: MagLev-like Load Balancer
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>
Diffstat (limited to 'plugins/lb-plugin/lb/lb_test.c')
-rw-r--r--plugins/lb-plugin/lb/lb_test.c293
1 files changed, 293 insertions, 0 deletions
diff --git a/plugins/lb-plugin/lb/lb_test.c b/plugins/lb-plugin/lb/lb_test.c
new file mode 100644
index 00000000000..8c2eaa91ce9
--- /dev/null
+++ b/plugins/lb-plugin/lb/lb_test.c
@@ -0,0 +1,293 @@
+/*
+ * 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 <vat/vat.h>
+#include <vlibapi/api.h>
+#include <vlibmemory/api.h>
+#include <vlibsocket/api.h>
+#include <vppinfra/error.h>
+#include <lb/lb.h>
+
+//TODO: Move that to vat/plugin_api.c
+//////////////////////////
+uword unformat_ip46_address (unformat_input_t * input, va_list * args)
+{
+ ip46_address_t *ip46 = va_arg (*args, ip46_address_t *);
+ ip46_type_t type = va_arg (*args, ip46_type_t);
+ if ((type != IP46_TYPE_IP6) &&
+ unformat(input, "%U", unformat_ip4_address, &ip46->ip4)) {
+ ip46_address_mask_ip4(ip46);
+ return 1;
+ } else if ((type != IP46_TYPE_IP4) &&
+ unformat(input, "%U", unformat_ip6_address, &ip46->ip6)) {
+ return 1;
+ }
+ return 0;
+}
+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;
+}
+/////////////////////////
+
+#define vl_msg_id(n,h) n,
+typedef enum {
+#include <lb/lb.api.h>
+ /* We'll want to know how many messages IDs we need... */
+ VL_MSG_FIRST_AVAILABLE,
+} vl_msg_id_t;
+#undef vl_msg_id
+
+/* define message structures */
+#define vl_typedefs
+#include <lb/lb.api.h>
+#undef vl_typedefs
+
+/* declare message handlers for each api */
+
+#define vl_endianfun /* define message structures */
+#include <lb/lb.api.h>
+#undef vl_endianfun
+
+/* instantiate all the print functions we know about */
+#define vl_print(handle, ...)
+#define vl_printfun
+#include <lb/lb.api.h>
+#undef vl_printfun
+
+/* Get the API version number. */
+#define vl_api_version(n,v) static u32 api_version=(v);
+#include <lb/lb.api.h>
+#undef vl_api_version
+
+typedef struct {
+ /* API message ID base */
+ u16 msg_id_base;
+ vat_main_t *vat_main;
+} lb_test_main_t;
+
+lb_test_main_t lb_test_main;
+
+#define foreach_standard_reply_retval_handler \
+_(lb_conf_reply) \
+_(lb_add_del_vip_reply) \
+_(lb_add_del_as_reply)
+
+#define _(n) \
+ static void vl_api_##n##_t_handler \
+ (vl_api_##n##_t * mp) \
+ { \
+ vat_main_t * vam = lb_test_main.vat_main; \
+ i32 retval = ntohl(mp->retval); \
+ if (vam->async_mode) { \
+ vam->async_errors += (retval < 0); \
+ } else { \
+ vam->retval = retval; \
+ vam->result_ready = 1; \
+ } \
+ }
+foreach_standard_reply_retval_handler;
+#undef _
+
+/*
+ * Table of message reply handlers, must include boilerplate handlers
+ * we just generated
+ */
+#define foreach_vpe_api_reply_msg \
+ _(LB_CONF_REPLY, lb_conf_reply) \
+ _(LB_ADD_DEL_VIP_REPLY, lb_add_del_vip_reply) \
+ _(LB_ADD_DEL_AS_REPLY, lb_add_del_as_reply)
+
+/* M: construct, but don't yet send a message */
+#define M(T,t) \
+do { \
+ vam->result_ready = 0; \
+ mp = vl_msg_api_alloc(sizeof(*mp)); \
+ memcpy (mp, &mps, sizeof (*mp)); \
+ mp->_vl_msg_id = ntohs (VL_API_##T + lbtm->msg_id_base); \
+ mp->client_index = vam->my_client_index; \
+} while(0);
+
+/* S: send a message */
+#define S (vl_msg_api_send_shmem (vam->vl_input_queue, (u8 *)&mp))
+
+/* W: wait for results, with timeout */
+#define W \
+do { \
+ timeout = vat_time_now (vam) + 1.0; \
+ \
+ while (vat_time_now (vam) < timeout) { \
+ if (vam->result_ready == 1) { \
+ return (vam->retval); \
+ } \
+ } \
+ return -99; \
+} while(0);
+
+static int api_lb_conf (vat_main_t * vam)
+{
+ lb_test_main_t *lbtm = &lb_test_main;
+ unformat_input_t *i = vam->input;
+ f64 timeout;
+ vl_api_lb_conf_t mps, *mp;
+
+ if (!unformat(i, "%U %U %u %u",
+ unformat_ip4_address, &mps.ip4_src_address,
+ unformat_ip6_address, mps.ip6_src_address,
+ &mps.sticky_buckets_per_core,
+ &mps.flow_timeout)) {
+ errmsg ("invalid arguments\n");
+ return -99;
+ }
+
+ M(LB_CONF, lb_conf); S; W;
+
+ /* NOTREACHED */
+ return 0;
+}
+
+static int api_lb_add_del_vip (vat_main_t * vam)
+{
+ lb_test_main_t *lbtm = &lb_test_main;
+ unformat_input_t * i = vam->input;
+ f64 timeout;
+ vl_api_lb_add_del_vip_t mps, *mp;
+ mps.is_del = 0;
+ mps.is_gre4 = 0;
+
+ if (!unformat(i, "%U",
+ unformat_ip46_prefix, mps.ip_prefix, &mps.prefix_length, IP46_TYPE_ANY)) {
+ errmsg ("invalid prefix\n");
+ return -99;
+ }
+
+ if (unformat(i, "gre4")) {
+ mps.is_gre4 = 1;
+ } else if (unformat(i, "gre6")) {
+ mps.is_gre4 = 0;
+ } else {
+ errmsg ("no encap\n");
+ return -99;
+ }
+
+ if (!unformat(i, "%d", &mps.new_flows_table_length)) {
+ errmsg ("no table lentgh\n");
+ return -99;
+ }
+
+ if (unformat(i, "del")) {
+ mps.is_del = 1;
+ }
+
+ M(LB_ADD_DEL_VIP, lb_add_del_vip); S; W;
+ /* NOTREACHED */
+ return 0;
+}
+
+static int api_lb_add_del_as (vat_main_t * vam)
+{
+ lb_test_main_t *lbtm = &lb_test_main;
+ unformat_input_t * i = vam->input;
+ f64 timeout;
+ vl_api_lb_add_del_as_t mps, *mp;
+ mps.is_del = 0;
+
+ if (!unformat(i, "%U %U",
+ unformat_ip46_prefix, mps.vip_ip_prefix, &mps.vip_prefix_length, IP46_TYPE_ANY,
+ unformat_ip46_address, mps.as_address)) {
+ errmsg ("invalid prefix or address\n");
+ return -99;
+ }
+
+ if (unformat(i, "del")) {
+ mps.is_del = 1;
+ }
+
+ M(LB_ADD_DEL_AS, lb_add_del_as); S; W;
+ /* NOTREACHED */
+ return 0;
+}
+
+/*
+ * List of messages that the api test plugin sends,
+ * and that the data plane plugin processes
+ */
+#define foreach_vpe_api_msg \
+_(lb_conf, "<ip4-src-addr> <ip6-src-address> <sticky_buckets_per_core> <flow_timeout>") \
+_(lb_add_del_vip, "<ip-prefix> [gre4|gre6] <new_table_len> [del]") \
+_(lb_add_del_as, "<vip-ip-prefix> <address> [del]")
+
+void vat_api_hookup (vat_main_t *vam)
+{
+ lb_test_main_t * lbtm = &lb_test_main;
+ /* Hook up handlers for replies from the data plane plug-in */
+#define _(N,n) \
+ vl_msg_api_set_handlers((VL_API_##N + lbtm->msg_id_base), \
+ #n, \
+ vl_api_##n##_t_handler, \
+ vl_noop_handler, \
+ vl_api_##n##_t_endian, \
+ vl_api_##n##_t_print, \
+ sizeof(vl_api_##n##_t), 1);
+ foreach_vpe_api_reply_msg;
+#undef _
+
+ /* API messages we can send */
+#define _(n,h) hash_set_mem (vam->function_by_name, #n, api_##n);
+ foreach_vpe_api_msg;
+#undef _
+
+ /* Help strings */
+#define _(n,h) hash_set_mem (vam->help_by_name, #n, h);
+ foreach_vpe_api_msg;
+#undef _
+}
+
+clib_error_t * vat_plugin_register (vat_main_t *vam)
+{
+ lb_test_main_t * lbtm = &lb_test_main;
+
+ u8 * name;
+
+ lbtm->vat_main = vam;
+
+ /* Ask the vpp engine for the first assigned message-id */
+ name = format (0, "lb_%08x%c", api_version, 0);
+ lbtm->msg_id_base = vl_client_get_first_plugin_msg_id ((char *) name);
+
+ if (lbtm->msg_id_base != (u16) ~0)
+ vat_api_hookup (vam);
+
+ vec_free(name);
+
+ return 0;
+}