Difference between revisions of "IETF 105 Hackathon"
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==Progress== |
==Progress== |
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| − | * SIL module implementing ietf-traffic-generator.yang for netconfd |
+ | * SIL module implementing ietf-traffic-generator.yang for netconfd - https://github.com/vlvassilev/yuma123/tree/master/example-modules/ietf-traffic-generator |
| − | |||
| − | YANG tree: |
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| − | | | +--:(multi-stream) |
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| − | | | +--rw streams |
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| − | | | +--rw stream* [id] |
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| − | | | +--rw id uint32 |
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| − | | | +--rw frame-size uint32 |
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| − | | | +--rw (frame-data-type)? |
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| − | | | | +--:(raw-frame-data) |
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| − | | | | +--rw frame-data? string |
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| − | | | +--rw interframe-gap uint32 |
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| − | | | +--rw interburst-gap? uint32 |
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| − | | | +--rw frames-per-burst? uint32 |
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| − | | | +--rw frames-per-stream uint32 |
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| − | | | +--rw interstream-gap uint32 |
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| − | | | +--rw src-mac-address? yang:mac-address {ethernet}? |
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| − | | | +--rw dst-mac-address? yang:mac-address {ethernet}? |
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| − | | | +--rw ether-type? uint16 {ethernet}? |
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| − | | | +--rw (encapsulation)? {ethernet}? |
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| − | | | +--:(vlan) |
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| − | | | +--rw vlan {ethernet-vlan}? |
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| − | | | +--rw id uint16 |
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| − | | | +--rw tpid? uint16 |
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| − | | | +--rw pcp? uint8 |
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| − | | | +--rw cfi? uint8 |
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| − | | +--rw total-frames? uint64 |
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| − | |||
| − | |||
| − | C implementation: |
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| − | |||
| − | <nowiki> |
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| − | |||
| − | static void traffic_generator_delete(val_value_t* traffic_generator_val) |
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| − | { |
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| − | char cmd_buf[512]; |
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| − | val_value_t* name_val; |
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| − | |||
| − | printf("traffic_generator_delete:\n"); |
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| − | val_dump_value(traffic_generator_val,NCX_DEF_INDENT); |
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| − | name_val = val_find_child(traffic_generator_val->parent,"ietf-interfaces","name"); |
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| − | assert(name_val); |
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| − | |||
| − | sprintf(cmd_buf, "pkill -f 'traffic-generator %s blah'", VAL_STRING(name_val)); |
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| − | system(cmd_buf); |
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| − | } |
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| − | |||
| − | static void traffic_generator_create(val_value_t* traffic_generator_val) |
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| − | { |
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| − | char cmd_buf[512]; |
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| − | val_value_t* name_val; |
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| − | |||
| − | printf("traffic_generator_create:\n"); |
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| − | val_dump_value(traffic_generator_val,NCX_DEF_INDENT); |
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| − | name_val = val_find_child(traffic_generator_val->parent,"ietf-interfaces","name"); |
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| − | assert(name_val); |
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| − | |||
| − | sprintf(cmd_buf, "traffic-generator %s blah &", VAL_STRING(name_val)); |
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| − | system(cmd_buf); |
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| − | } |
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| − | /* 2 step (delete/add) interface configuration */ |
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| − | |||
| − | /* 1. deactivation loop - deletes all deleted or modified interface/traffic-generator -s */ |
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| − | if(interfaces_cur_val!=NULL) { |
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| − | for (interface_cur_val = val_get_first_child(interfaces_cur_val); |
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| − | interface_cur_val != NULL; |
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| − | interface_cur_val = val_get_next_child(interface_cur_val)) { |
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| − | traffic_generator_cur_val = val_find_child(interface_cur_val, TG_MOD, "traffic-generator"); |
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| − | if(traffic_generator_cur_val==NULL) { |
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| − | continue; |
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| − | } |
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| − | traffic_generator_new_val = val123_find_match(config_new_val, traffic_generator_cur_val); |
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| − | if(traffic_generator_new_val==NULL || 0!=val_compare_ex(traffic_generator_cur_val,traffic_generator_new_val,TRUE)) { |
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| − | traffic_generator_delete(traffic_generator_cur_val); |
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| − | } |
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| − | } |
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| − | } |
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| − | |||
| − | /* 2. activation loop - adds all new or modified interface/traffic-generator -s */ |
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| − | if(interfaces_new_val!=NULL) { |
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| − | for (interface_new_val = val_get_first_child(interfaces_new_val); |
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| − | interface_new_val != NULL; |
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| − | interface_new_val = val_get_next_child(interface_new_val)) { |
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| − | traffic_generator_new_val = val_find_child(interface_new_val, TG_MOD, "traffic-generator"); |
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| − | if(traffic_generator_new_val==NULL) { |
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| − | continue; |
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| − | } |
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| − | traffic_generator_cur_val = val123_find_match(config_cur_val, traffic_generator_new_val); |
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| − | if(traffic_generator_cur_val==NULL || 0!=val_compare_ex(traffic_generator_new_val,traffic_generator_cur_val,TRUE)) { |
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| − | traffic_generator_create(traffic_generator_new_val); |
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| − | } |
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| − | } |
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| − | } |
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| − | |||
| − | ... |
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| − | |||
| − | #include <stdint.h> |
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| − | |||
| − | typedef struct burst_t_ { |
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| − | uint32_t frame_length; |
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| − | uint8_t* raw_frame_data; |
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| − | uint32_t interframe_gap; |
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| − | uint32_t frames_per_burst; |
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| − | uint32_t interburst_gap; |
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| − | } burst_t; |
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| − | |||
| − | typedef struct stream_t_ { |
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| − | unsigned int bursts_per_stream; |
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| − | unsigned int burst_index; |
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| − | uint32_t interstream_gap; |
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| − | burst_t* bursts; |
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| − | } stream_t; |
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| − | |||
| − | typedef struct traffic_generator_t_ { |
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| − | uint64_t total_frames; |
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| − | uint64_t total_frame_index; |
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| − | uint64_t sec; |
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| − | uint32_t nsec; |
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| − | float ns_per_octet; |
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| − | stream_t* streams; |
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| − | unsigned int streams_num; |
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| − | unsigned int stream_index; |
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| − | unsigned int burst_index; |
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| − | unsigned int frame_index; |
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| − | } traffic_generator_t; |
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| − | |||
| − | |||
| − | traffic_generator_t* traffic_generator_init(const char* config_str); |
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| − | int traffic_generator_get_frame(traffic_generator_t* tg, uint32_t* frame_length, uint8_t** frame, uint64_t* tx_time_sec, uint32_t* tx_time_nsec); |
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| − | |||
| − | ... |
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| − | |||
| − | while(1) { |
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| − | ret = traffic_generator_get_frame(tg, &frame_len, &frame_buf, &tx_time_sec, &tx_time_nsec); |
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| − | if(ret!=0) { |
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| − | break; |
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| − | } |
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| − | clock_gettime( CLOCK_MONOTONIC, &now); |
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| − | rel.tv_sec = tx_time_sec; /* seconds */ |
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| − | rel.tv_nsec = tx_time_nsec; /* nanoseconds */ |
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| − | timespec_add(&rel, &epoch, &abs); |
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| − | timespec_sub(&now, &abs, &req); |
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| − | ret=nanosleep(&req,&rem); |
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| − | //assert(ret==0); |
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| − | ret = raw_socket_send(&raw_socket, frame_buf, frame_len); |
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| − | assert(ret==0); |
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| − | |||
| − | if(now.tv_sec>print_sec) { |
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| − | print_sec=now.tv_sec; |
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| − | printf("%llu\n",frm); |
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| − | } |
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| − | frm++; |
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| − | } |
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| − | |||
| − | </nowiki> |
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Latest revision as of 21:03, 21 July 2019
Plan
From https://trac.ietf.org/trac/ietf/meeting/wiki/105hackathon :
Transactional network test framework for flow capable bridge nodes ( OpenFlow, NETCONF )
* Champion(s)
* Vladimir Vassilev <vladimir at transpacket.com>
* Project(s)
* Drafts
* A YANG Data Model for Network Bridge Management
* A YANG Data Model for Network Interconnect Tester Management
* Node side (netconfd)
* traffic-generator and traffic-analyzer modules for Linux
* flow capable network bridge module OpenFlow->NETCONF convertor
* Controller side (OpenDaylight)
* Plugin for flow capable nodes with YANG/NETCONF interface
* Application side (python-tntapi, python-litenc, yangcli)
* RFC2544 implementation
* Environment (mininet)
* Topology instantiation script
* References
* https://tools.ietf.org/html/draft-vassilev-netmod-network-bridge
* https://tools.ietf.org/html/draft-vassilev-bmwg-network-interconnect-tester
* https://github.com/vlvassilev/yuma123/example-modules
Progress
- SIL module implementing ietf-traffic-generator.yang for netconfd - https://github.com/vlvassilev/yuma123/tree/master/example-modules/ietf-traffic-generator
