forked from Mirror/frr
Zebra: adding support for Zebra MLAG Functionality
This includes: 1. Processing client Registrations for MLAG 2. storing client Interests for MLAG updates 3. Opening communication channel to MLAG with First client reg 4. Closing Communication channel with last client De-reg 5. Spawning a new thread for handling MLAG updates peocessing 6. adding Test code 7. advertising MLAG Updates to clients based on their interests Signed-off-by: Satheesh Kumar K <sathk@cumulusnetworks.com>
This commit is contained in:
Satheesh Kumar K
parent
46c2687c72
commit
ee235396b9
|
|
@ -30,6 +30,8 @@ extern "C" {
|
||||||
#include "lib/vrf.h"
|
#include "lib/vrf.h"
|
||||||
#include "lib/stream.h"
|
#include "lib/stream.h"
|
||||||
|
|
||||||
|
#define MLAG_MSG_NULL_PAYLOAD 0
|
||||||
|
#define MLAG_MSG_NO_BATCH 1
|
||||||
#define MLAG_BUF_LIMIT 2048
|
#define MLAG_BUF_LIMIT 2048
|
||||||
|
|
||||||
enum mlag_role {
|
enum mlag_role {
|
||||||
|
|
|
||||||
|
|
@ -66,6 +66,7 @@ zebra_zebra_SOURCES = \
|
||||||
zebra/rule_netlink.c \
|
zebra/rule_netlink.c \
|
||||||
zebra/rule_socket.c \
|
zebra/rule_socket.c \
|
||||||
zebra/zebra_mlag.c \
|
zebra/zebra_mlag.c \
|
||||||
|
zebra/zebra_mlag_private.c \
|
||||||
zebra/zebra_l2.c \
|
zebra/zebra_l2.c \
|
||||||
zebra/zebra_memory.c \
|
zebra/zebra_memory.c \
|
||||||
zebra/zebra_dplane.c \
|
zebra/zebra_dplane.c \
|
||||||
|
|
|
||||||
|
|
@ -2556,6 +2556,9 @@ void (*zserv_handlers[])(ZAPI_HANDLER_ARGS) = {
|
||||||
[ZEBRA_IPTABLE_DELETE] = zread_iptable,
|
[ZEBRA_IPTABLE_DELETE] = zread_iptable,
|
||||||
[ZEBRA_VXLAN_FLOOD_CONTROL] = zebra_vxlan_flood_control,
|
[ZEBRA_VXLAN_FLOOD_CONTROL] = zebra_vxlan_flood_control,
|
||||||
[ZEBRA_VXLAN_SG_REPLAY] = zebra_vxlan_sg_replay,
|
[ZEBRA_VXLAN_SG_REPLAY] = zebra_vxlan_sg_replay,
|
||||||
|
[ZEBRA_MLAG_CLIENT_REGISTER] = zebra_mlag_client_register,
|
||||||
|
[ZEBRA_MLAG_CLIENT_UNREGISTER] = zebra_mlag_client_unregister,
|
||||||
|
[ZEBRA_MLAG_FORWARD_MSG] = zebra_mlag_forward_client_msg,
|
||||||
};
|
};
|
||||||
|
|
||||||
#if defined(HANDLE_ZAPI_FUZZING)
|
#if defined(HANDLE_ZAPI_FUZZING)
|
||||||
|
|
|
||||||
|
|
@ -23,9 +23,13 @@
|
||||||
|
|
||||||
#include "command.h"
|
#include "command.h"
|
||||||
#include "hook.h"
|
#include "hook.h"
|
||||||
|
#include "frr_pthread.h"
|
||||||
|
#include "mlag.h"
|
||||||
|
|
||||||
#include "zebra/zebra_mlag.h"
|
#include "zebra/zebra_mlag.h"
|
||||||
|
#include "zebra/zebra_mlag_private.h"
|
||||||
#include "zebra/zebra_router.h"
|
#include "zebra/zebra_router.h"
|
||||||
|
#include "zebra/zebra_memory.h"
|
||||||
#include "zebra/zapi_msg.h"
|
#include "zebra/zapi_msg.h"
|
||||||
#include "zebra/debug.h"
|
#include "zebra/debug.h"
|
||||||
|
|
||||||
|
|
@ -33,6 +37,540 @@
|
||||||
#include "zebra/zebra_mlag_clippy.c"
|
#include "zebra/zebra_mlag_clippy.c"
|
||||||
#endif
|
#endif
|
||||||
|
|
||||||
|
#define ZEBRA_MLAG_METADATA_LEN 4
|
||||||
|
#define ZEBRA_MLAG_MSG_BCAST 0xFFFFFFFF
|
||||||
|
|
||||||
|
uint8_t mlag_wr_buffer[ZEBRA_MLAG_BUF_LIMIT];
|
||||||
|
uint8_t mlag_rd_buffer[ZEBRA_MLAG_BUF_LIMIT];
|
||||||
|
uint32_t mlag_rd_buf_offset;
|
||||||
|
|
||||||
|
static bool test_mlag_in_progress;
|
||||||
|
|
||||||
|
static int zebra_mlag_signal_write_thread(void);
|
||||||
|
static int zebra_mlag_terminate_pthread(struct thread *event);
|
||||||
|
static int zebra_mlag_post_data_from_main_thread(struct thread *thread);
|
||||||
|
static void zebra_mlag_publish_process_state(struct zserv *client,
|
||||||
|
zebra_message_types_t msg_type);
|
||||||
|
|
||||||
|
/**********************MLAG Interaction***************************************/
|
||||||
|
|
||||||
|
/*
|
||||||
|
* API to post the Registration to MLAGD
|
||||||
|
* MLAG will not process any messages with out the registration
|
||||||
|
*/
|
||||||
|
void zebra_mlag_send_register(void)
|
||||||
|
{
|
||||||
|
struct stream *s = NULL;
|
||||||
|
|
||||||
|
s = stream_new(sizeof(struct mlag_msg));
|
||||||
|
|
||||||
|
stream_putl(s, MLAG_REGISTER);
|
||||||
|
stream_putw(s, MLAG_MSG_NULL_PAYLOAD);
|
||||||
|
stream_putw(s, MLAG_MSG_NO_BATCH);
|
||||||
|
stream_fifo_push_safe(zrouter.mlag_info.mlag_fifo, s);
|
||||||
|
zebra_mlag_signal_write_thread();
|
||||||
|
|
||||||
|
if (IS_ZEBRA_DEBUG_MLAG)
|
||||||
|
zlog_debug("%s: Enqueued MLAG Register to MLAG Thread ",
|
||||||
|
__func__);
|
||||||
|
}
|
||||||
|
|
||||||
|
/*
|
||||||
|
* API to post the De-Registration to MLAGD
|
||||||
|
* MLAG will not process any messages after the de-registration
|
||||||
|
*/
|
||||||
|
void zebra_mlag_send_deregister(void)
|
||||||
|
{
|
||||||
|
struct stream *s = NULL;
|
||||||
|
|
||||||
|
s = stream_new(sizeof(struct mlag_msg));
|
||||||
|
|
||||||
|
stream_putl(s, MLAG_DEREGISTER);
|
||||||
|
stream_putw(s, MLAG_MSG_NULL_PAYLOAD);
|
||||||
|
stream_putw(s, MLAG_MSG_NO_BATCH);
|
||||||
|
stream_fifo_push_safe(zrouter.mlag_info.mlag_fifo, s);
|
||||||
|
zebra_mlag_signal_write_thread();
|
||||||
|
|
||||||
|
if (IS_ZEBRA_DEBUG_MLAG)
|
||||||
|
zlog_debug("%s: Enqueued MLAG De-Register to MLAG Thread ",
|
||||||
|
__func__);
|
||||||
|
}
|
||||||
|
|
||||||
|
/*
|
||||||
|
* API To handle MLAG Received data
|
||||||
|
* Decodes the data using protobuf and enqueue to main thread
|
||||||
|
* main thread publish this to clients based on client subscription
|
||||||
|
*/
|
||||||
|
void zebra_mlag_process_mlag_data(uint8_t *data, uint32_t len)
|
||||||
|
{
|
||||||
|
struct stream *s = NULL;
|
||||||
|
struct stream *s1 = NULL;
|
||||||
|
int msg_type = 0;
|
||||||
|
|
||||||
|
s = stream_new(ZEBRA_MAX_PACKET_SIZ);
|
||||||
|
msg_type = zebra_mlag_protobuf_decode_message(&s, data, len);
|
||||||
|
|
||||||
|
if (msg_type <= 0) {
|
||||||
|
/* Something went wrong in decoding */
|
||||||
|
stream_free(s);
|
||||||
|
zlog_err("%s: failed to process mlag data-%d, %u", __func__,
|
||||||
|
msg_type, len);
|
||||||
|
return;
|
||||||
|
}
|
||||||
|
|
||||||
|
/*
|
||||||
|
* additional four bytes are for message type
|
||||||
|
*/
|
||||||
|
s1 = stream_new(stream_get_endp(s) + ZEBRA_MLAG_METADATA_LEN);
|
||||||
|
stream_putl(s1, msg_type);
|
||||||
|
stream_put(s1, s->data, stream_get_endp(s));
|
||||||
|
thread_add_event(zrouter.master, zebra_mlag_post_data_from_main_thread,
|
||||||
|
s1, 0, NULL);
|
||||||
|
stream_free(s);
|
||||||
|
}
|
||||||
|
|
||||||
|
/**********************End of MLAG Interaction********************************/
|
||||||
|
|
||||||
|
/************************MLAG Thread Processing*******************************/
|
||||||
|
|
||||||
|
/*
|
||||||
|
* after posting every 'ZEBRA_MLAG_POST_LIMIT' packets, MLAG Thread will be
|
||||||
|
* yielded to give CPU for other threads
|
||||||
|
*/
|
||||||
|
#define ZEBRA_MLAG_POST_LIMIT 100
|
||||||
|
|
||||||
|
/*
|
||||||
|
* This thread reads the clients data from the Global queue and encodes with
|
||||||
|
* protobuf and pass on to the MLAG socket.
|
||||||
|
*/
|
||||||
|
static int zebra_mlag_client_msg_handler(struct thread *event)
|
||||||
|
{
|
||||||
|
struct stream *s;
|
||||||
|
uint32_t wr_count = 0;
|
||||||
|
uint32_t msg_type = 0;
|
||||||
|
int len = 0;
|
||||||
|
|
||||||
|
wr_count = stream_fifo_count_safe(zrouter.mlag_info.mlag_fifo);
|
||||||
|
if (IS_ZEBRA_DEBUG_MLAG)
|
||||||
|
zlog_debug(":%s: Processing MLAG write, %d messages in queue",
|
||||||
|
__func__, wr_count);
|
||||||
|
|
||||||
|
zrouter.mlag_info.t_write = NULL;
|
||||||
|
for (wr_count = 0; wr_count < ZEBRA_MLAG_POST_LIMIT; wr_count++) {
|
||||||
|
/* FIFO is empty,wait for teh message to be add */
|
||||||
|
if (stream_fifo_count_safe(zrouter.mlag_info.mlag_fifo) == 0)
|
||||||
|
break;
|
||||||
|
|
||||||
|
s = stream_fifo_pop_safe(zrouter.mlag_info.mlag_fifo);
|
||||||
|
if (!s) {
|
||||||
|
zlog_debug(":%s: Got a NULL Messages, some thing wrong",
|
||||||
|
__func__);
|
||||||
|
break;
|
||||||
|
}
|
||||||
|
|
||||||
|
zebra_mlag_reset_write_buffer();
|
||||||
|
/*
|
||||||
|
* Encode the data now
|
||||||
|
*/
|
||||||
|
len = zebra_mlag_protobuf_encode_client_data(s, &msg_type);
|
||||||
|
|
||||||
|
/*
|
||||||
|
* write to MCLAGD
|
||||||
|
*/
|
||||||
|
if (len > 0)
|
||||||
|
zebra_mlag_private_write_data(mlag_wr_buffer, len);
|
||||||
|
|
||||||
|
/*
|
||||||
|
* If message type is De-register, send a signal to main thread,
|
||||||
|
* so that necessary cleanup will be done by main thread.
|
||||||
|
*/
|
||||||
|
if (msg_type == MLAG_DEREGISTER) {
|
||||||
|
thread_add_event(zrouter.master,
|
||||||
|
zebra_mlag_terminate_pthread, NULL, 0,
|
||||||
|
NULL);
|
||||||
|
}
|
||||||
|
|
||||||
|
stream_free(s);
|
||||||
|
}
|
||||||
|
|
||||||
|
if (IS_ZEBRA_DEBUG_MLAG)
|
||||||
|
zlog_debug(":%s: Posted %d messages to MLAGD", __func__,
|
||||||
|
wr_count);
|
||||||
|
/*
|
||||||
|
* Currently there is only message write task is enqueued to this
|
||||||
|
* thread, yielding was added for future purpose, so that this thread
|
||||||
|
* can server other tasks also and in case FIFO is empty, this task will
|
||||||
|
* be schedule when main thread adds some messages
|
||||||
|
*/
|
||||||
|
if (wr_count >= ZEBRA_MLAG_POST_LIMIT)
|
||||||
|
zebra_mlag_signal_write_thread();
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
|
||||||
|
/*
|
||||||
|
* API to handle the process state.
|
||||||
|
* In case of Down, Zebra keep monitoring the MLAG state.
|
||||||
|
* all the state Notifications will be published to clients
|
||||||
|
*/
|
||||||
|
void zebra_mlag_handle_process_state(enum zebra_mlag_state state)
|
||||||
|
{
|
||||||
|
if (state == MLAG_UP) {
|
||||||
|
zrouter.mlag_info.connected = true;
|
||||||
|
zebra_mlag_publish_process_state(NULL, ZEBRA_MLAG_PROCESS_UP);
|
||||||
|
zebra_mlag_send_register();
|
||||||
|
} else if (state == MLAG_DOWN) {
|
||||||
|
zrouter.mlag_info.connected = false;
|
||||||
|
zebra_mlag_publish_process_state(NULL, ZEBRA_MLAG_PROCESS_DOWN);
|
||||||
|
zebra_mlag_private_monitor_state();
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
/***********************End of MLAG Thread processing*************************/
|
||||||
|
|
||||||
|
/*************************Multi-entratnt Api's********************************/
|
||||||
|
|
||||||
|
/*
|
||||||
|
* Provider api to signal that work/events are available
|
||||||
|
* for the Zebra MLAG Write pthread.
|
||||||
|
* This API is called from 2 pthreads..
|
||||||
|
* 1) by main thread when client posts a MLAG Message
|
||||||
|
* 2) by MLAG Thread, in case of yield
|
||||||
|
* though this api, is called from two threads we don't need any locking
|
||||||
|
* because Thread task enqueue is thread safe means internally it had
|
||||||
|
* necessary protection
|
||||||
|
*/
|
||||||
|
static int zebra_mlag_signal_write_thread(void)
|
||||||
|
{
|
||||||
|
if (zrouter.mlag_info.zebra_pth_mlag) {
|
||||||
|
if (IS_ZEBRA_DEBUG_MLAG)
|
||||||
|
zlog_debug(":%s: Scheduling MLAG write", __func__);
|
||||||
|
thread_add_event(zrouter.mlag_info.th_master,
|
||||||
|
zebra_mlag_client_msg_handler, NULL, 0,
|
||||||
|
&zrouter.mlag_info.t_write);
|
||||||
|
}
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
|
||||||
|
/*
|
||||||
|
* API will be used to publish the MLAG state to interested clients
|
||||||
|
* In case client is passed, state is posted only for that client,
|
||||||
|
* otherwise to all interested clients
|
||||||
|
* this api can be called from two threads.
|
||||||
|
* 1) from main thread: when client is passed
|
||||||
|
* 2) from MLAG Thread: when client is NULL
|
||||||
|
*
|
||||||
|
* In second case, to avoid global data access data will be post to Main
|
||||||
|
* thread, so that actual posting to clients will happen from Main thread.
|
||||||
|
*/
|
||||||
|
static void zebra_mlag_publish_process_state(struct zserv *client,
|
||||||
|
zebra_message_types_t msg_type)
|
||||||
|
{
|
||||||
|
struct stream *s;
|
||||||
|
|
||||||
|
if (IS_ZEBRA_DEBUG_MLAG)
|
||||||
|
zlog_debug("%s: Publishing MLAG process state:%s to %s Client",
|
||||||
|
__func__,
|
||||||
|
(msg_type == ZEBRA_MLAG_PROCESS_UP) ? "UP" : "DOWN",
|
||||||
|
(client) ? "one" : "all");
|
||||||
|
|
||||||
|
if (client) {
|
||||||
|
s = stream_new(ZEBRA_HEADER_SIZE);
|
||||||
|
zclient_create_header(s, msg_type, VRF_DEFAULT);
|
||||||
|
zserv_send_message(client, s);
|
||||||
|
return;
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
|
/*
|
||||||
|
* additional four bytes are for mesasge type
|
||||||
|
*/
|
||||||
|
s = stream_new(ZEBRA_HEADER_SIZE + ZEBRA_MLAG_METADATA_LEN);
|
||||||
|
stream_putl(s, ZEBRA_MLAG_MSG_BCAST);
|
||||||
|
zclient_create_header(s, msg_type, VRF_DEFAULT);
|
||||||
|
thread_add_event(zrouter.master, zebra_mlag_post_data_from_main_thread,
|
||||||
|
s, 0, NULL);
|
||||||
|
}
|
||||||
|
|
||||||
|
/**************************End of Multi-entrant Apis**************************/
|
||||||
|
|
||||||
|
/***********************Zebra Main thread processing**************************/
|
||||||
|
|
||||||
|
/*
|
||||||
|
* To avoid data corruption, messages will be post to clients only from
|
||||||
|
* main thread, because for that access was needed for clients list.
|
||||||
|
* so instead of forcing the locks, messages will be posted from main thread.
|
||||||
|
*/
|
||||||
|
static int zebra_mlag_post_data_from_main_thread(struct thread *thread)
|
||||||
|
{
|
||||||
|
struct stream *s = THREAD_ARG(thread);
|
||||||
|
struct stream *zebra_s = NULL;
|
||||||
|
struct listnode *node;
|
||||||
|
struct zserv *client;
|
||||||
|
uint32_t msg_type = 0;
|
||||||
|
uint32_t msg_len = 0;
|
||||||
|
|
||||||
|
if (!s)
|
||||||
|
return -1;
|
||||||
|
|
||||||
|
STREAM_GETL(s, msg_type);
|
||||||
|
if (IS_ZEBRA_DEBUG_MLAG)
|
||||||
|
zlog_debug(
|
||||||
|
"%s: Posting MLAG data for msg_type:0x%x to interested cleints",
|
||||||
|
__func__, msg_type);
|
||||||
|
|
||||||
|
msg_len = s->endp - ZEBRA_MLAG_METADATA_LEN;
|
||||||
|
for (ALL_LIST_ELEMENTS_RO(zrouter.client_list, node, client)) {
|
||||||
|
if (client->mlag_updates_interested == true) {
|
||||||
|
if (msg_type != ZEBRA_MLAG_MSG_BCAST
|
||||||
|
&& !CHECK_FLAG(client->mlag_reg_mask1,
|
||||||
|
(1 << msg_type))) {
|
||||||
|
continue;
|
||||||
|
}
|
||||||
|
|
||||||
|
if (IS_ZEBRA_DEBUG_MLAG)
|
||||||
|
zlog_debug(
|
||||||
|
"%s: Posting MLAG data of length-%d to client:%d ",
|
||||||
|
__func__, msg_len, client->proto);
|
||||||
|
|
||||||
|
zebra_s = stream_new(msg_len);
|
||||||
|
STREAM_GET(zebra_s->data, s, msg_len);
|
||||||
|
zebra_s->endp = msg_len;
|
||||||
|
stream_putw_at(zebra_s, 0, msg_len);
|
||||||
|
|
||||||
|
/*
|
||||||
|
* This stream will be enqueued to client_obuf, it will
|
||||||
|
* be freed after posting to client socket.
|
||||||
|
*/
|
||||||
|
zserv_send_message(client, zebra_s);
|
||||||
|
zebra_s = NULL;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
stream_free(s);
|
||||||
|
return 0;
|
||||||
|
stream_failure:
|
||||||
|
stream_free(s);
|
||||||
|
if (zebra_s)
|
||||||
|
stream_free(zebra_s);
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
|
||||||
|
/*
|
||||||
|
* Start the MLAG Thread, this will be used to write client data on to
|
||||||
|
* MLAG Process and to read the data from MLAG and post to cleints.
|
||||||
|
* when all clients are un-registered, this Thread will be
|
||||||
|
* suspended.
|
||||||
|
*/
|
||||||
|
static void zebra_mlag_spawn_pthread(void)
|
||||||
|
{
|
||||||
|
/* Start MLAG write pthread */
|
||||||
|
|
||||||
|
struct frr_pthread_attr pattr = {.start =
|
||||||
|
frr_pthread_attr_default.start,
|
||||||
|
.stop = frr_pthread_attr_default.stop};
|
||||||
|
|
||||||
|
zrouter.mlag_info.zebra_pth_mlag =
|
||||||
|
frr_pthread_new(&pattr, "Zebra MLAG thread", "Zebra MLAG");
|
||||||
|
|
||||||
|
zrouter.mlag_info.th_master = zrouter.mlag_info.zebra_pth_mlag->master;
|
||||||
|
|
||||||
|
|
||||||
|
/* Enqueue an initial event for the dataplane pthread */
|
||||||
|
zebra_mlag_signal_write_thread();
|
||||||
|
|
||||||
|
frr_pthread_run(zrouter.mlag_info.zebra_pth_mlag, NULL);
|
||||||
|
}
|
||||||
|
|
||||||
|
/*
|
||||||
|
* all clients are un-registered for MLAG Updates, terminate the
|
||||||
|
* MLAG write thread
|
||||||
|
*/
|
||||||
|
static int zebra_mlag_terminate_pthread(struct thread *event)
|
||||||
|
{
|
||||||
|
if (IS_ZEBRA_DEBUG_MLAG)
|
||||||
|
zlog_debug("Zebra MLAG write thread terminate called");
|
||||||
|
|
||||||
|
if (zrouter.mlag_info.clients_interested_cnt) {
|
||||||
|
if (IS_ZEBRA_DEBUG_MLAG)
|
||||||
|
zlog_debug(
|
||||||
|
"Zebra MLAG: still some clients are interested");
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
|
||||||
|
frr_pthread_stop(zrouter.mlag_info.zebra_pth_mlag, NULL);
|
||||||
|
|
||||||
|
/* Destroy pthread */
|
||||||
|
frr_pthread_destroy(zrouter.mlag_info.zebra_pth_mlag);
|
||||||
|
zrouter.mlag_info.zebra_pth_mlag = NULL;
|
||||||
|
zrouter.mlag_info.th_master = NULL;
|
||||||
|
zrouter.mlag_info.t_read = NULL;
|
||||||
|
zrouter.mlag_info.t_write = NULL;
|
||||||
|
|
||||||
|
/*
|
||||||
|
* Send Notification to clean private data
|
||||||
|
*/
|
||||||
|
zebra_mlag_private_cleanup_data();
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
|
||||||
|
/*
|
||||||
|
* API to register zebra client for MLAG Updates
|
||||||
|
*/
|
||||||
|
void zebra_mlag_client_register(ZAPI_HANDLER_ARGS)
|
||||||
|
{
|
||||||
|
struct stream *s;
|
||||||
|
uint32_t reg_mask = 0;
|
||||||
|
int rc = 0;
|
||||||
|
|
||||||
|
if (IS_ZEBRA_DEBUG_MLAG)
|
||||||
|
zlog_debug("Received MLAG Registration from client-proto:%d",
|
||||||
|
client->proto);
|
||||||
|
|
||||||
|
|
||||||
|
/* Get input stream. */
|
||||||
|
s = msg;
|
||||||
|
|
||||||
|
/* Get data. */
|
||||||
|
STREAM_GETL(s, reg_mask);
|
||||||
|
|
||||||
|
if (client->mlag_updates_interested == true) {
|
||||||
|
|
||||||
|
if (IS_ZEBRA_DEBUG_MLAG)
|
||||||
|
zlog_debug(
|
||||||
|
"Client is registered, existing mask: 0x%x, new mask: 0x%x",
|
||||||
|
client->mlag_reg_mask1, reg_mask);
|
||||||
|
if (client->mlag_reg_mask1 != reg_mask)
|
||||||
|
client->mlag_reg_mask1 = reg_mask;
|
||||||
|
/*
|
||||||
|
* Client might missed MLAG-UP Notification, post-it again
|
||||||
|
*/
|
||||||
|
zebra_mlag_publish_process_state(client, ZEBRA_MLAG_PROCESS_UP);
|
||||||
|
return;
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
|
client->mlag_updates_interested = true;
|
||||||
|
client->mlag_reg_mask1 = reg_mask;
|
||||||
|
if (IS_ZEBRA_DEBUG_MLAG)
|
||||||
|
zlog_debug("Registering for MLAG Updates with mask: 0x%x, ",
|
||||||
|
client->mlag_reg_mask1);
|
||||||
|
|
||||||
|
zrouter.mlag_info.clients_interested_cnt++;
|
||||||
|
|
||||||
|
if (zrouter.mlag_info.clients_interested_cnt == 1) {
|
||||||
|
/*
|
||||||
|
* First-client for MLAG Updates,open the communication channel
|
||||||
|
* with MLAG
|
||||||
|
*/
|
||||||
|
if (IS_ZEBRA_DEBUG_MLAG)
|
||||||
|
zlog_debug(
|
||||||
|
"First client, opening the channel with MLAG");
|
||||||
|
|
||||||
|
zebra_mlag_spawn_pthread();
|
||||||
|
rc = zebra_mlag_private_open_channel();
|
||||||
|
if (rc < 0) {
|
||||||
|
/*
|
||||||
|
* For some reason, zebra not able to open the
|
||||||
|
* comm-channel with MLAG, so post MLAG-DOWN to client.
|
||||||
|
* later when the channel is open, zebra will send
|
||||||
|
* MLAG-UP
|
||||||
|
*/
|
||||||
|
if (IS_ZEBRA_DEBUG_MLAG)
|
||||||
|
zlog_debug(
|
||||||
|
"Fail to open channel with MLAG,rc:%d, post Proto-down",
|
||||||
|
rc);
|
||||||
|
zebra_mlag_publish_process_state(
|
||||||
|
client, ZEBRA_MLAG_PROCESS_DOWN);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
if (IS_ZEBRA_DEBUG_MLAG)
|
||||||
|
zlog_debug("Client Registered successfully for MLAG Updates");
|
||||||
|
|
||||||
|
if (zrouter.mlag_info.connected == true)
|
||||||
|
zebra_mlag_publish_process_state(client, ZEBRA_MLAG_PROCESS_UP);
|
||||||
|
stream_failure:
|
||||||
|
return;
|
||||||
|
}
|
||||||
|
|
||||||
|
/*
|
||||||
|
* API to un-register for MLAG Updates
|
||||||
|
*/
|
||||||
|
void zebra_mlag_client_unregister(ZAPI_HANDLER_ARGS)
|
||||||
|
{
|
||||||
|
if (IS_ZEBRA_DEBUG_MLAG)
|
||||||
|
zlog_debug("Received MLAG De-Registration from client-proto:%d",
|
||||||
|
client->proto);
|
||||||
|
|
||||||
|
if (client->mlag_updates_interested == false)
|
||||||
|
/* Unexpected */
|
||||||
|
return;
|
||||||
|
|
||||||
|
client->mlag_updates_interested = false;
|
||||||
|
client->mlag_reg_mask1 = 0;
|
||||||
|
zrouter.mlag_info.clients_interested_cnt--;
|
||||||
|
|
||||||
|
if (zrouter.mlag_info.clients_interested_cnt == 0) {
|
||||||
|
/*
|
||||||
|
* No-client is interested for MLAG Updates,close the
|
||||||
|
* communication channel with MLAG
|
||||||
|
*/
|
||||||
|
if (IS_ZEBRA_DEBUG_MLAG)
|
||||||
|
zlog_debug("Last client for MLAG, close the channel ");
|
||||||
|
|
||||||
|
/*
|
||||||
|
* Clean up flow:
|
||||||
|
* =============
|
||||||
|
* 1) main thread calls socket close which posts De-register
|
||||||
|
* to MLAG write thread
|
||||||
|
* 2) after MLAG write thread posts De-register it sends a
|
||||||
|
* signal back to main thread to do the thread cleanup
|
||||||
|
* this was mainly to make sure De-register is posted to MCLAGD.
|
||||||
|
*/
|
||||||
|
zebra_mlag_private_close_channel();
|
||||||
|
}
|
||||||
|
|
||||||
|
if (IS_ZEBRA_DEBUG_MLAG)
|
||||||
|
zlog_debug(
|
||||||
|
"Client De-Registered successfully for MLAG Updates");
|
||||||
|
}
|
||||||
|
|
||||||
|
/*
|
||||||
|
* Does following things.
|
||||||
|
* 1) allocated new local stream, and copies the client data and enqueue
|
||||||
|
* to MLAG Thread
|
||||||
|
* 2) MLAG Thread after dequeing, encode the client data using protobuf
|
||||||
|
* and write on to MLAG
|
||||||
|
*/
|
||||||
|
void zebra_mlag_forward_client_msg(ZAPI_HANDLER_ARGS)
|
||||||
|
{
|
||||||
|
struct stream *zebra_s;
|
||||||
|
struct stream *mlag_s;
|
||||||
|
|
||||||
|
if (IS_ZEBRA_DEBUG_MLAG)
|
||||||
|
zlog_debug("Received Client MLAG Data from client-proto:%d",
|
||||||
|
client->proto);
|
||||||
|
|
||||||
|
/* Get input stream. */
|
||||||
|
zebra_s = msg;
|
||||||
|
mlag_s = stream_new(zebra_s->endp);
|
||||||
|
|
||||||
|
/*
|
||||||
|
* Client data is | Zebra Header + MLAG Data |
|
||||||
|
* we need to enqueue only the MLAG data, skipping Zebra Header
|
||||||
|
*/
|
||||||
|
stream_put(mlag_s, zebra_s->data + zebra_s->getp,
|
||||||
|
STREAM_READABLE(zebra_s));
|
||||||
|
stream_fifo_push_safe(zrouter.mlag_info.mlag_fifo, mlag_s);
|
||||||
|
zebra_mlag_signal_write_thread();
|
||||||
|
|
||||||
|
if (IS_ZEBRA_DEBUG_MLAG)
|
||||||
|
zlog_debug("%s: Enqueued Client:%d data to MLAG Thread ",
|
||||||
|
__func__, client->proto);
|
||||||
|
}
|
||||||
|
|
||||||
|
/***********************End of Zebra Main thread processing*************/
|
||||||
|
|
||||||
enum mlag_role zebra_mlag_get_role(void)
|
enum mlag_role zebra_mlag_get_role(void)
|
||||||
{
|
{
|
||||||
return zrouter.mlag_info.role;
|
return zrouter.mlag_info.role;
|
||||||
|
|
@ -53,11 +591,9 @@ DEFUN_HIDDEN (show_mlag,
|
||||||
return CMD_SUCCESS;
|
return CMD_SUCCESS;
|
||||||
}
|
}
|
||||||
|
|
||||||
DEFPY_HIDDEN (test_mlag,
|
DEFPY(test_mlag, test_mlag_cmd,
|
||||||
test_mlag_cmd,
|
|
||||||
"test zebra mlag <none$none|primary$primary|secondary$secondary>",
|
"test zebra mlag <none$none|primary$primary|secondary$secondary>",
|
||||||
"Test code\n"
|
"Test code\n" ZEBRA_STR
|
||||||
ZEBRA_STR
|
|
||||||
"Modify the Mlag state\n"
|
"Modify the Mlag state\n"
|
||||||
"Mlag is not setup on the machine\n"
|
"Mlag is not setup on the machine\n"
|
||||||
"Mlag is setup to be primary\n"
|
"Mlag is setup to be primary\n"
|
||||||
|
|
@ -78,8 +614,25 @@ DEFPY_HIDDEN (test_mlag,
|
||||||
mlag_role2str(orig, buf1, sizeof(buf1)),
|
mlag_role2str(orig, buf1, sizeof(buf1)),
|
||||||
mlag_role2str(orig, buf2, sizeof(buf2)));
|
mlag_role2str(orig, buf2, sizeof(buf2)));
|
||||||
|
|
||||||
if (orig != zrouter.mlag_info.role)
|
if (orig != zrouter.mlag_info.role) {
|
||||||
zsend_capabilities_all_clients();
|
zsend_capabilities_all_clients();
|
||||||
|
if (zrouter.mlag_info.role != MLAG_ROLE_NONE) {
|
||||||
|
if (zrouter.mlag_info.clients_interested_cnt == 0
|
||||||
|
&& test_mlag_in_progress == false) {
|
||||||
|
if (zrouter.mlag_info.zebra_pth_mlag == NULL)
|
||||||
|
zebra_mlag_spawn_pthread();
|
||||||
|
zrouter.mlag_info.clients_interested_cnt++;
|
||||||
|
test_mlag_in_progress = true;
|
||||||
|
zebra_mlag_private_open_channel();
|
||||||
|
}
|
||||||
|
} else {
|
||||||
|
if (test_mlag_in_progress == true) {
|
||||||
|
test_mlag_in_progress = false;
|
||||||
|
zrouter.mlag_info.clients_interested_cnt--;
|
||||||
|
zebra_mlag_private_close_channel();
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
return CMD_SUCCESS;
|
return CMD_SUCCESS;
|
||||||
}
|
}
|
||||||
|
|
@ -88,8 +641,41 @@ void zebra_mlag_init(void)
|
||||||
{
|
{
|
||||||
install_element(VIEW_NODE, &show_mlag_cmd);
|
install_element(VIEW_NODE, &show_mlag_cmd);
|
||||||
install_element(ENABLE_NODE, &test_mlag_cmd);
|
install_element(ENABLE_NODE, &test_mlag_cmd);
|
||||||
|
|
||||||
|
/*
|
||||||
|
* Intialiaze teh MLAG Global variableis
|
||||||
|
* write thread will be craeted during actual registration with MCLAG
|
||||||
|
*/
|
||||||
|
zrouter.mlag_info.clients_interested_cnt = 0;
|
||||||
|
zrouter.mlag_info.connected = false;
|
||||||
|
zrouter.mlag_info.timer_running = false;
|
||||||
|
zrouter.mlag_info.mlag_fifo = stream_fifo_new();
|
||||||
|
zrouter.mlag_info.zebra_pth_mlag = NULL;
|
||||||
|
zrouter.mlag_info.th_master = NULL;
|
||||||
|
zrouter.mlag_info.t_read = NULL;
|
||||||
|
zrouter.mlag_info.t_write = NULL;
|
||||||
|
test_mlag_in_progress = false;
|
||||||
|
zebra_mlag_reset_write_buffer();
|
||||||
|
zebra_mlag_reset_read_buffer();
|
||||||
}
|
}
|
||||||
|
|
||||||
void zebra_mlag_terminate(void)
|
void zebra_mlag_terminate(void)
|
||||||
{
|
{
|
||||||
}
|
}
|
||||||
|
|
||||||
|
|
||||||
|
/*
|
||||||
|
*
|
||||||
|
* ProtoBuf Encoding APIs
|
||||||
|
*/
|
||||||
|
|
||||||
|
int zebra_mlag_protobuf_encode_client_data(struct stream *s, uint32_t *msg_type)
|
||||||
|
{
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
|
||||||
|
int zebra_mlag_protobuf_decode_message(struct stream **s, uint8_t *data,
|
||||||
|
uint32_t len)
|
||||||
|
{
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
|
|
||||||
|
|
@ -23,18 +23,47 @@
|
||||||
#define __ZEBRA_MLAG_H__
|
#define __ZEBRA_MLAG_H__
|
||||||
|
|
||||||
#include "mlag.h"
|
#include "mlag.h"
|
||||||
|
#include "zclient.h"
|
||||||
|
#include "zebra/zserv.h"
|
||||||
|
|
||||||
#ifdef __cplusplus
|
#define ZEBRA_MLAG_BUF_LIMIT 2048
|
||||||
extern "C" {
|
#define ZEBRA_MLAG_LEN_SIZE 4
|
||||||
#endif
|
|
||||||
|
extern uint8_t mlag_wr_buffer[ZEBRA_MLAG_BUF_LIMIT];
|
||||||
|
extern uint8_t mlag_rd_buffer[ZEBRA_MLAG_BUF_LIMIT];
|
||||||
|
extern uint32_t mlag_rd_buf_offset;
|
||||||
|
|
||||||
|
static inline void zebra_mlag_reset_write_buffer(void)
|
||||||
|
{
|
||||||
|
memset(mlag_wr_buffer, 0, ZEBRA_MLAG_BUF_LIMIT);
|
||||||
|
}
|
||||||
|
|
||||||
|
static inline void zebra_mlag_reset_read_buffer(void)
|
||||||
|
{
|
||||||
|
memset(mlag_rd_buffer, 0, ZEBRA_MLAG_BUF_LIMIT);
|
||||||
|
mlag_rd_buf_offset = 0;
|
||||||
|
}
|
||||||
|
|
||||||
|
enum zebra_mlag_state {
|
||||||
|
MLAG_UP = 1,
|
||||||
|
MLAG_DOWN = 2,
|
||||||
|
};
|
||||||
|
|
||||||
void zebra_mlag_init(void);
|
void zebra_mlag_init(void);
|
||||||
void zebra_mlag_terminate(void);
|
void zebra_mlag_terminate(void);
|
||||||
|
|
||||||
enum mlag_role zebra_mlag_get_role(void);
|
enum mlag_role zebra_mlag_get_role(void);
|
||||||
|
void zebra_mlag_client_register(ZAPI_HANDLER_ARGS);
|
||||||
#ifdef __cplusplus
|
void zebra_mlag_client_unregister(ZAPI_HANDLER_ARGS);
|
||||||
}
|
void zebra_mlag_forward_client_msg(ZAPI_HANDLER_ARGS);
|
||||||
#endif
|
void zebra_mlag_send_register(void);
|
||||||
|
void zebra_mlag_send_deregister(void);
|
||||||
|
void zebra_mlag_handle_process_state(enum zebra_mlag_state state);
|
||||||
|
void zebra_mlag_process_mlag_data(uint8_t *data, uint32_t len);
|
||||||
|
/*
|
||||||
|
* ProtoBuffer Api's
|
||||||
|
*/
|
||||||
|
int zebra_mlag_protobuf_encode_client_data(struct stream *s,
|
||||||
|
uint32_t *msg_type);
|
||||||
|
int zebra_mlag_protobuf_decode_message(struct stream **s, uint8_t *data,
|
||||||
|
uint32_t len);
|
||||||
#endif
|
#endif
|
||||||
|
|
|
||||||
300
zebra/zebra_mlag_private.c
Normal file
300
zebra/zebra_mlag_private.c
Normal file
|
|
@ -0,0 +1,300 @@
|
||||||
|
/*
|
||||||
|
* This is an implementation of MLAG Functionality
|
||||||
|
*
|
||||||
|
* Module name: Zebra MLAG
|
||||||
|
*
|
||||||
|
* Author: sathesh Kumar karra <sathk@cumulusnetworks.com>
|
||||||
|
*
|
||||||
|
* Copyright (C) 2019 Cumulus Networks http://www.cumulusnetworks.com
|
||||||
|
*
|
||||||
|
* This program is free software; you can redistribute it and/or modify it
|
||||||
|
* under the terms of the GNU General Public License as published by the Free
|
||||||
|
* Software Foundation; either version 2 of the License, or (at your option)
|
||||||
|
* any later version.
|
||||||
|
*
|
||||||
|
* This program is distributed in the hope that it will be useful, but WITHOUT
|
||||||
|
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
||||||
|
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
|
||||||
|
* more details.
|
||||||
|
*
|
||||||
|
* You should have received a copy of the GNU General Public License along
|
||||||
|
* with this program; see the file COPYING; if not, write to the Free Software
|
||||||
|
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
|
||||||
|
*/
|
||||||
|
#include "zebra.h"
|
||||||
|
|
||||||
|
#include "hook.h"
|
||||||
|
#include "module.h"
|
||||||
|
#include "thread.h"
|
||||||
|
#include "libfrr.h"
|
||||||
|
#include "version.h"
|
||||||
|
#include "network.h"
|
||||||
|
|
||||||
|
#include "lib/stream.h"
|
||||||
|
|
||||||
|
#include "zebra/debug.h"
|
||||||
|
#include "zebra/zebra_router.h"
|
||||||
|
#include "zebra/zebra_mlag.h"
|
||||||
|
#include "zebra/zebra_mlag_private.h"
|
||||||
|
|
||||||
|
#include <sys/un.h>
|
||||||
|
|
||||||
|
|
||||||
|
/*
|
||||||
|
* This file will have platform specific apis to communicate with MCLAG.
|
||||||
|
*
|
||||||
|
*/
|
||||||
|
|
||||||
|
#ifdef HAVE_CUMULUS
|
||||||
|
|
||||||
|
static struct thread_master *zmlag_master;
|
||||||
|
static int mlag_socket;
|
||||||
|
|
||||||
|
static int zebra_mlag_connect(struct thread *thread);
|
||||||
|
static int zebra_mlag_read(struct thread *thread);
|
||||||
|
|
||||||
|
/*
|
||||||
|
* Write the data to MLAGD
|
||||||
|
*/
|
||||||
|
int zebra_mlag_private_write_data(uint8_t *data, uint32_t len)
|
||||||
|
{
|
||||||
|
int rc = 0;
|
||||||
|
|
||||||
|
if (IS_ZEBRA_DEBUG_MLAG) {
|
||||||
|
zlog_debug("%s: Writing %d length Data to clag", __func__, len);
|
||||||
|
zlog_hexdump(data, len);
|
||||||
|
}
|
||||||
|
rc = write(mlag_socket, data, len);
|
||||||
|
return rc;
|
||||||
|
}
|
||||||
|
|
||||||
|
static void zebra_mlag_sched_read(void)
|
||||||
|
{
|
||||||
|
thread_add_read(zmlag_master, zebra_mlag_read, NULL, mlag_socket,
|
||||||
|
&zrouter.mlag_info.t_read);
|
||||||
|
}
|
||||||
|
|
||||||
|
static int zebra_mlag_read(struct thread *thread)
|
||||||
|
{
|
||||||
|
uint32_t *msglen;
|
||||||
|
uint32_t h_msglen;
|
||||||
|
uint32_t tot_len, curr_len = mlag_rd_buf_offset;
|
||||||
|
|
||||||
|
zrouter.mlag_info.t_read = NULL;
|
||||||
|
|
||||||
|
/*
|
||||||
|
* Received message in sock_stream looks like below
|
||||||
|
* | len-1 (4 Bytes) | payload-1 (len-1) |
|
||||||
|
* len-2 (4 Bytes) | payload-2 (len-2) | ..
|
||||||
|
*
|
||||||
|
* Idea is read one message completely, then process, until message is
|
||||||
|
* read completely, keep on reading from the socket
|
||||||
|
*/
|
||||||
|
if (curr_len < ZEBRA_MLAG_LEN_SIZE) {
|
||||||
|
ssize_t data_len;
|
||||||
|
|
||||||
|
data_len = read(mlag_socket, mlag_rd_buffer + curr_len,
|
||||||
|
ZEBRA_MLAG_LEN_SIZE - curr_len);
|
||||||
|
if (data_len == 0 || data_len == -1) {
|
||||||
|
if (IS_ZEBRA_DEBUG_MLAG)
|
||||||
|
zlog_debug("MLAG connection closed socket : %d",
|
||||||
|
mlag_socket);
|
||||||
|
close(mlag_socket);
|
||||||
|
zebra_mlag_handle_process_state(MLAG_DOWN);
|
||||||
|
return -1;
|
||||||
|
}
|
||||||
|
if (data_len != (ssize_t)ZEBRA_MLAG_LEN_SIZE - curr_len) {
|
||||||
|
/* Try again later */
|
||||||
|
zebra_mlag_sched_read();
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
curr_len = ZEBRA_MLAG_LEN_SIZE;
|
||||||
|
}
|
||||||
|
|
||||||
|
/* Get the actual packet length */
|
||||||
|
msglen = (uint32_t *)mlag_rd_buffer;
|
||||||
|
h_msglen = ntohl(*msglen);
|
||||||
|
|
||||||
|
/* This will be the actual length of the packet */
|
||||||
|
tot_len = h_msglen + ZEBRA_MLAG_LEN_SIZE;
|
||||||
|
|
||||||
|
if (curr_len < tot_len) {
|
||||||
|
ssize_t data_len;
|
||||||
|
|
||||||
|
data_len = read(mlag_socket, mlag_rd_buffer + curr_len,
|
||||||
|
tot_len - curr_len);
|
||||||
|
if (data_len == 0 || data_len == -1) {
|
||||||
|
if (IS_ZEBRA_DEBUG_MLAG)
|
||||||
|
zlog_debug("MLAG connection closed socket : %d",
|
||||||
|
mlag_socket);
|
||||||
|
close(mlag_socket);
|
||||||
|
zebra_mlag_handle_process_state(MLAG_DOWN);
|
||||||
|
return -1;
|
||||||
|
}
|
||||||
|
if (data_len != (ssize_t)tot_len - curr_len) {
|
||||||
|
/* Try again later */
|
||||||
|
zebra_mlag_sched_read();
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
if (IS_ZEBRA_DEBUG_MLAG) {
|
||||||
|
zlog_debug("Received a MLAG Message from socket: %d, len:%u ",
|
||||||
|
mlag_socket, tot_len);
|
||||||
|
zlog_hexdump(mlag_rd_buffer, tot_len);
|
||||||
|
}
|
||||||
|
|
||||||
|
tot_len -= ZEBRA_MLAG_LEN_SIZE;
|
||||||
|
|
||||||
|
/* Process the packet */
|
||||||
|
zebra_mlag_process_mlag_data(mlag_rd_buffer + ZEBRA_MLAG_LEN_SIZE,
|
||||||
|
tot_len);
|
||||||
|
|
||||||
|
/* Register read thread. */
|
||||||
|
zebra_mlag_reset_read_buffer();
|
||||||
|
zebra_mlag_sched_read();
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
|
||||||
|
static int zebra_mlag_connect(struct thread *thread)
|
||||||
|
{
|
||||||
|
struct sockaddr_un svr = {0};
|
||||||
|
struct ucred ucred;
|
||||||
|
socklen_t len = 0;
|
||||||
|
|
||||||
|
/* Reset the Timer-running flag */
|
||||||
|
zrouter.mlag_info.timer_running = false;
|
||||||
|
|
||||||
|
/* Reset, sothat Next task can be scheduled */
|
||||||
|
zrouter.mlag_info.t_read = NULL;
|
||||||
|
svr.sun_family = AF_UNIX;
|
||||||
|
#define MLAG_SOCK_NAME "/var/run/clag-zebra.socket"
|
||||||
|
strlcpy(svr.sun_path, MLAG_SOCK_NAME, sizeof(MLAG_SOCK_NAME) + 1);
|
||||||
|
|
||||||
|
mlag_socket = socket(svr.sun_family, SOCK_STREAM, 0);
|
||||||
|
if (mlag_socket < 0)
|
||||||
|
return -1;
|
||||||
|
|
||||||
|
if (connect(mlag_socket, (struct sockaddr *)&svr, sizeof(svr)) == -1) {
|
||||||
|
if (IS_ZEBRA_DEBUG_MLAG)
|
||||||
|
zlog_debug(
|
||||||
|
"Unable to connect to %s try again in 10 secs",
|
||||||
|
svr.sun_path);
|
||||||
|
close(mlag_socket);
|
||||||
|
zrouter.mlag_info.timer_running = true;
|
||||||
|
thread_add_timer(zmlag_master, zebra_mlag_connect, NULL, 10,
|
||||||
|
&zrouter.mlag_info.t_read);
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
len = sizeof(struct ucred);
|
||||||
|
ucred.pid = getpid();
|
||||||
|
|
||||||
|
set_nonblocking(mlag_socket);
|
||||||
|
setsockopt(mlag_socket, SOL_SOCKET, SO_PEERCRED, &ucred, len);
|
||||||
|
|
||||||
|
if (IS_ZEBRA_DEBUG_MLAG)
|
||||||
|
zlog_debug("%s: Connection with MLAG is established ",
|
||||||
|
__func__);
|
||||||
|
|
||||||
|
thread_add_read(zmlag_master, zebra_mlag_read, NULL, mlag_socket,
|
||||||
|
&zrouter.mlag_info.t_read);
|
||||||
|
/*
|
||||||
|
* Connection is established with MLAGD, post to clients
|
||||||
|
*/
|
||||||
|
zebra_mlag_handle_process_state(MLAG_UP);
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
|
||||||
|
/*
|
||||||
|
* Currently we are doing polling later we will look for better options
|
||||||
|
*/
|
||||||
|
void zebra_mlag_private_monitor_state(void)
|
||||||
|
{
|
||||||
|
thread_add_event(zmlag_master, zebra_mlag_connect, NULL, 0,
|
||||||
|
&zrouter.mlag_info.t_read);
|
||||||
|
}
|
||||||
|
|
||||||
|
int zebra_mlag_private_open_channel(void)
|
||||||
|
{
|
||||||
|
zmlag_master = zrouter.mlag_info.th_master;
|
||||||
|
|
||||||
|
if (zrouter.mlag_info.connected == true) {
|
||||||
|
if (IS_ZEBRA_DEBUG_MLAG)
|
||||||
|
zlog_debug("%s: Zebra already connected to MLAGD",
|
||||||
|
__func__);
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
|
||||||
|
if (zrouter.mlag_info.timer_running == true) {
|
||||||
|
if (IS_ZEBRA_DEBUG_MLAG)
|
||||||
|
zlog_debug(
|
||||||
|
"%s: Connection retry is in progress for MLAGD",
|
||||||
|
__func__);
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
|
||||||
|
if (zrouter.mlag_info.clients_interested_cnt) {
|
||||||
|
/*
|
||||||
|
* Connect only if any clients are showing interest
|
||||||
|
*/
|
||||||
|
thread_add_event(zmlag_master, zebra_mlag_connect, NULL, 0,
|
||||||
|
&zrouter.mlag_info.t_read);
|
||||||
|
}
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
|
||||||
|
int zebra_mlag_private_close_channel(void)
|
||||||
|
{
|
||||||
|
if (zmlag_master == NULL)
|
||||||
|
return -1;
|
||||||
|
|
||||||
|
if (zrouter.mlag_info.clients_interested_cnt) {
|
||||||
|
if (IS_ZEBRA_DEBUG_MLAG)
|
||||||
|
zlog_debug("%s: still %d clients are connected, skip",
|
||||||
|
__func__,
|
||||||
|
zrouter.mlag_info.clients_interested_cnt);
|
||||||
|
return -1;
|
||||||
|
}
|
||||||
|
|
||||||
|
/*
|
||||||
|
* Post the De-register to MLAG, so that it can do necesasry cleanup
|
||||||
|
*/
|
||||||
|
zebra_mlag_send_deregister();
|
||||||
|
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
|
||||||
|
void zebra_mlag_private_cleanup_data(void)
|
||||||
|
{
|
||||||
|
zmlag_master = NULL;
|
||||||
|
zrouter.mlag_info.connected = false;
|
||||||
|
zrouter.mlag_info.timer_running = false;
|
||||||
|
|
||||||
|
close(mlag_socket);
|
||||||
|
}
|
||||||
|
|
||||||
|
#else /*HAVE_CUMULUS */
|
||||||
|
|
||||||
|
int zebra_mlag_private_write_data(uint8_t *data, uint32_t len)
|
||||||
|
{
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
|
||||||
|
void zebra_mlag_private_monitor_state(void)
|
||||||
|
{
|
||||||
|
}
|
||||||
|
|
||||||
|
int zebra_mlag_private_open_channel(void)
|
||||||
|
{
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
|
||||||
|
int zebra_mlag_private_close_channel(void)
|
||||||
|
{
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
|
||||||
|
void zebra_mlag_private_cleanup_data(void)
|
||||||
|
{
|
||||||
|
}
|
||||||
|
#endif /*HAVE_CUMULUS*/
|
||||||
37
zebra/zebra_mlag_private.h
Normal file
37
zebra/zebra_mlag_private.h
Normal file
|
|
@ -0,0 +1,37 @@
|
||||||
|
/*
|
||||||
|
* This is an implementation of MLAG Functionality
|
||||||
|
*
|
||||||
|
* Module name: Zebra MLAG
|
||||||
|
*
|
||||||
|
* Author: sathesh Kumar karra <sathk@cumulusnetworks.com>
|
||||||
|
*
|
||||||
|
* Copyright (C) 2019 Cumulus Networks http://www.cumulusnetworks.com
|
||||||
|
*
|
||||||
|
* This program is free software; you can redistribute it and/or modify it
|
||||||
|
* under the terms of the GNU General Public License as published by the Free
|
||||||
|
* Software Foundation; either version 2 of the License, or (at your option)
|
||||||
|
* any later version.
|
||||||
|
*
|
||||||
|
* This program is distributed in the hope that it will be useful, but WITHOUT
|
||||||
|
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
||||||
|
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
|
||||||
|
* more details.
|
||||||
|
*
|
||||||
|
* You should have received a copy of the GNU General Public License along
|
||||||
|
* with this program; see the file COPYING; if not, write to the Free Software
|
||||||
|
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
|
||||||
|
*/
|
||||||
|
#ifndef __ZEBRA_MLAG_PRIVATE_H__
|
||||||
|
#define __ZEBRA_MLAG_PRIVATE_H__
|
||||||
|
|
||||||
|
|
||||||
|
/*
|
||||||
|
* all the platform specific API's
|
||||||
|
*/
|
||||||
|
|
||||||
|
int zebra_mlag_private_open_channel(void);
|
||||||
|
int zebra_mlag_private_close_channel(void);
|
||||||
|
void zebra_mlag_private_monitor_state(void);
|
||||||
|
int zebra_mlag_private_write_data(uint8_t *data, uint32_t len);
|
||||||
|
void zebra_mlag_private_cleanup_data(void);
|
||||||
|
#endif
|
||||||
|
|
@ -71,6 +71,35 @@ struct zebra_mlag_info {
|
||||||
|
|
||||||
/* The system mac being used */
|
/* The system mac being used */
|
||||||
struct ethaddr mac;
|
struct ethaddr mac;
|
||||||
|
/*
|
||||||
|
* Zebra will open the communication channel with MLAGD only if any
|
||||||
|
* clients are interested and it is controlled dynamically based on
|
||||||
|
* client registers & un-registers.
|
||||||
|
*/
|
||||||
|
uint32_t clients_interested_cnt;
|
||||||
|
|
||||||
|
/* coomunication channel with MLAGD is established */
|
||||||
|
bool connected;
|
||||||
|
|
||||||
|
/* connection retry timer is running */
|
||||||
|
bool timer_running;
|
||||||
|
|
||||||
|
/* Holds the client data(unencoded) that need to be pushed to MCLAGD*/
|
||||||
|
struct stream_fifo *mlag_fifo;
|
||||||
|
|
||||||
|
/*
|
||||||
|
* A new Kernel thread will be created to post the data to MCLAGD.
|
||||||
|
* where as, read will be performed from the zebra main thread, because
|
||||||
|
* read involves accessing client registartion data structures.
|
||||||
|
*/
|
||||||
|
struct frr_pthread *zebra_pth_mlag;
|
||||||
|
|
||||||
|
/* MLAG Thread context 'master' */
|
||||||
|
struct thread_master *th_master;
|
||||||
|
|
||||||
|
/* Threads for read/write. */
|
||||||
|
struct thread *t_read;
|
||||||
|
struct thread *t_write;
|
||||||
};
|
};
|
||||||
|
|
||||||
struct zebra_router {
|
struct zebra_router {
|
||||||
|
|
|
||||||
|
|
@ -99,6 +99,13 @@ struct zserv {
|
||||||
uint8_t proto;
|
uint8_t proto;
|
||||||
uint16_t instance;
|
uint16_t instance;
|
||||||
|
|
||||||
|
/*
|
||||||
|
* Interested for MLAG Updates, and also stores the client
|
||||||
|
* interested message mask
|
||||||
|
*/
|
||||||
|
bool mlag_updates_interested;
|
||||||
|
uint32_t mlag_reg_mask1;
|
||||||
|
|
||||||
/* Statistics */
|
/* Statistics */
|
||||||
uint32_t redist_v4_add_cnt;
|
uint32_t redist_v4_add_cnt;
|
||||||
uint32_t redist_v4_del_cnt;
|
uint32_t redist_v4_del_cnt;
|
||||||
|
|
|
||||||
Loading…
Reference in a new issue