Currently running bro current (2.5-372) on a Scientific Linux release 6.9 kernel 2.6.32-696.13.2.el6.x86_64 . The bro netmap module was added per directions:
bro@xdev-m ~/bin> ./bro -N Bro::Netmap
Bro::Netmap - Packet acquisition via Netmap (dynamic, version 1.0)
I downloaded and installed the current git netmap ( MODULE_INFO(srcversion, "70F039B58865AAE47076678") ) without issue, and there are no messages when the modules load besides what you would expect to see.
What I am seeing is when I run the lb application it runs as expected for a few minutes, then stops forwarding packets and continues logging the same line regardless of how long you wait. Sample logs follow.
lb starts:
[root@xdev-w1 lb]# ./lb -i eth5 -o 10 -p8 -B 1024
933.751533 main [600] interface is eth5
933.751614 main [621] requested 1024 extra buffers
934.080683 main [714] successfully opened netmap:eth5 (tx rings: 512)
934.080699 main [725] obtained 1024 extra buffers
934.081586 main [784] opening pipe named netmap:eth5{0/xT@1
934.081627 nm_mmap [987] do not mmap, inherit from parent
934.081639 main [799] successfully opened pipe #1 netmap:eth5{0/xT@1 (tx slots: 512)
934.081646 main [803] zerocopy enabled
934.081671 main [784] opening pipe named netmap:eth5{1/xT@1
934.081692 nm_mmap [987] do not mmap, inherit from parent
934.081700 main [799] successfully opened pipe #2 netmap:eth5{1/xT@1 (tx slots: 512)
934.081706 main [803] zerocopy enabled
934.081729 main [784] opening pipe named netmap:eth5{2/xT@1
934.081746 nm_mmap [987] do not mmap, inherit from parent
934.081754 main [799] successfully opened pipe #3 netmap:eth5{2/xT@1 (tx slots: 512)
934.081760 main [803] zerocopy enabled
934.081786 main [784] opening pipe named netmap:eth5{3/xT@1
934.081803 nm_mmap [987] do not mmap, inherit from parent
934.081813 main [799] successfully opened pipe #4 netmap:eth5{3/xT@1 (tx slots: 512)
934.081819 main [803] zerocopy enabled
934.081842 main [784] opening pipe named netmap:eth5{4/xT@1
934.081862 nm_mmap [987] do not mmap, inherit from parent
934.081870 main [799] successfully opened pipe #5 netmap:eth5{4/xT@1 (tx slots: 512)
934.081876 main [803] zerocopy enabled
934.081899 main [784] opening pipe named netmap:eth5{5/xT@1
934.081916 nm_mmap [987] do not mmap, inherit from parent
934.081923 main [799] successfully opened pipe #6 netmap:eth5{5/xT@1 (tx slots: 512)
934.081929 main [803] zerocopy enabled
934.081954 main [784] opening pipe named netmap:eth5{6/xT@1
934.081972 nm_mmap [987] do not mmap, inherit from parent
934.081980 main [799] successfully opened pipe #7 netmap:eth5{6/xT@1 (tx slots: 512)
934.081986 main [803] zerocopy enabled
934.082013 main [784] opening pipe named netmap:eth5{7/xT@1
934.082031 nm_mmap [987] do not mmap, inherit from parent
934.082041 main [799] successfully opened pipe #8 netmap:eth5{7/xT@1 (tx slots: 512)
934.082046 main [803] zerocopy enabled
{"ts":1513728945.082923,"interface":"netmap:eth5{0/xT@1","output_ring":0,"packets_forwarded":85397,"packets_dropped":0,"data_forward_rate_Mbps":160.3504,"data_drop_rate_Mbps":0.0000,"packet_forward_rate_kpps":19.4110,"packet_drop_rate_kpps":0.0000,"overflow_queue_size":0}
{"ts":1513728945.082923,"interface":"netmap:eth5{1/xT@1","output_ring":1,"packets_forwarded":65319,"packets_dropped":0,"data_forward_rate_Mbps":29.0976,"data_drop_rate_Mbps":0.0000,"packet_forward_rate_kpps":8.5940,"packet_drop_rate_kpps":0.0000,"overflow_queue_size":0}
{"ts":1513728945.082923,"interface":"netmap:eth5{2/xT@1","output_ring":2,"packets_forwarded":317351,"packets_dropped":1300,"data_forward_rate_Mbps":395.4482,"data_drop_rate_Mbps":0.0000,"packet_forward_rate_kpps":35.4900,"packet_drop_rate_kpps":0.0000,"overflow_queue_size":0}
{"ts":1513728945.082923,"interface":"netmap:eth5{3/xT@1","output_ring":3,"packets_forwarded":100570,"packets_dropped":0,"data_forward_rate_Mbps":148.8784,"data_drop_rate_Mbps":0.0000,"packet_forward_rate_kpps":16.3190,"packet_drop_rate_kpps":0.0000,"overflow_queue_size":0}
{"ts":1513728945.082923,"interface":"netmap:eth5{4/xT@1","output_ring":4,"packets_forwarded":75111,"packets_dropped":0,"data_forward_rate_Mbps":91.5148,"data_drop_rate_Mbps":0.0000,"packet_forward_rate_kpps":11.4440,"packet_drop_rate_kpps":0.0000,"overflow_queue_size":0}
{"ts":1513728945.082923,"interface":"netmap:eth5{5/xT@1","output_ring":5,"packets_forwarded":66920,"packets_dropped":0,"data_forward_rate_Mbps":66.1700,"data_drop_rate_Mbps":0.0000,"packet_forward_rate_kpps":8.0000,"packet_drop_rate_kpps":0.0000,"overflow_queue_size":0}
{"ts":1513728945.082923,"interface":"netmap:eth5{6/xT@1","output_ring":6,"packets_forwarded":143992,"packets_dropped":0,"data_forward_rate_Mbps":170.3500,"data_drop_rate_Mbps":0.0000,"packet_forward_rate_kpps":17.5980,"packet_drop_rate_kpps":0.0000,"overflow_queue_size":0}
{"ts":1513728945.082923,"interface":"netmap:eth5{7/xT@1","output_ring":7,"packets_forwarded":67032,"packets_dropped":0,"data_forward_rate_Mbps":29.2870,"data_drop_rate_Mbps":0.0000,"packet_forward_rate_kpps":5.2020,"packet_drop_rate_kpps":0.0000,"overflow_queue_size":0}
{"ts":1513728945.082923,"interface":"netmap:eth5","output_ring":null,"packets_received":1035728,"packets_forwarded":921692,"packets_dropped":1300,"non_ip_packets":18,"data_forward_rate_Mbps":1091.0964,"data_drop_rate_Mbps":0.0000,"packet_forward_rate_kpps":122.0570,"packet_drop_rate_kpps":0.0000,"free_buffer_slots":1024}
{"ts":1513728955.083739,"interface":"netmap:eth5{0/xT@1","output_ring":0,"packets_forwarded":517056,"packets_dropped":31870,"data_forward_rate_Mbps":583.9244,"data_drop_rate_Mbps":0.0000,"packet_forward_rate_kpps":46.9350,"packet_drop_rate_kpps":0.0000,"overflow_queue_size":0}
{"ts":1513728955.083739,"interface":"netmap:eth5{1/xT@1","output_ring":1,"packets_forwarded":415852,"packets_dropped":0,"data_forward_rate_Mbps":583.7359,"data_drop_rate_Mbps":0.0000,"packet_forward_rate_kpps":48.9310,"packet_drop_rate_kpps":0.0000,"overflow_queue_size":0}
{"ts":1513728955.083739,"interface":"netmap:eth5{2/xT@1","output_ring":2,"packets_forwarded":998058,"packets_dropped":1300,"data_forward_rate_Mbps":925.2677,"data_drop_rate_Mbps":0.0000,"packet_forward_rate_kpps":106.8910,"packet_drop_rate_kpps":0.0000,"overflow_queue_size":0}
{"ts":1513728955.083739,"interface":"netmap:eth5{3/xT@1","output_ring":3,"packets_forwarded":836948,"packets_dropped":14154,"data_forward_rate_Mbps":1321.3131,"data_drop_rate_Mbps":15.6000,"packet_forward_rate_kpps":91.2690,"packet_drop_rate_kpps":1.0790,"overflow_queue_size":0}
{"ts":1513728955.083739,"interface":"netmap:eth5{4/xT@1","output_ring":4,"packets_forwarded":409670,"packets_dropped":0,"data_forward_rate_Mbps":519.5414,"data_drop_rate_Mbps":0.0000,"packet_forward_rate_kpps":40.8310,"packet_drop_rate_kpps":0.0000,"overflow_queue_size":0}
{"ts":1513728955.083739,"interface":"netmap:eth5{5/xT@1","output_ring":5,"packets_forwarded":395510,"packets_dropped":0,"data_forward_rate_Mbps":545.0672,"data_drop_rate_Mbps":0.0000,"packet_forward_rate_kpps":42.6580,"packet_drop_rate_kpps":0.0000,"overflow_queue_size":0}
{"ts":1513728955.083739,"interface":"netmap:eth5{6/xT@1","output_ring":6,"packets_forwarded":555556,"packets_dropped":0,"data_forward_rate_Mbps":592.1166,"data_drop_rate_Mbps":0.0000,"packet_forward_rate_kpps":47.5850,"packet_drop_rate_kpps":0.0000,"overflow_queue_size":0}
{"ts":1513728955.083739,"interface":"netmap:eth5{7/xT@1","output_ring":7,"packets_forwarded":393490,"packets_dropped":0,"data_forward_rate_Mbps":515.1810,"data_drop_rate_Mbps":0.0000,"packet_forward_rate_kpps":41.6850,"packet_drop_rate_kpps":0.0000,"overflow_queue_size":0}
{"ts":1513728955.083739,"interface":"netmap:eth5","output_ring":null,"packets_received":5323612,"packets_forwarded":4522140,"packets_dropped":47324,"non_ip_packets":18,"data_forward_rate_Mbps":5586.1473,"data_drop_rate_Mbps":15.6000,"packet_forward_rate_kpps":466.7870,"packet_drop_rate_kpps":1.0790,"free_buffer_slots":1024}
this continues for some time then :
{"ts":1513729195.106307,"interface":"netmap:eth5{0/xT@1","output_ring":0,"packets_forwarded":4920687,"packets_dropped":33825,"data_forward_rate_Mbps":10.7695,"data_drop_rate_Mbps":0.0000,"packet_forward_rate_kpps":2.0180,"packet_drop_rate_kpps":0.0000,"overflow_queue_size":0}
{"ts":1513729195.106307,"interface":"netmap:eth5{1/xT@1","output_ring":1,"packets_forwarded":5930891,"packets_dropped":3760,"data_forward_rate_Mbps":47.3625,"data_drop_rate_Mbps":0.0000,"packet_forward_rate_kpps":9.5640,"packet_drop_rate_kpps":0.0000,"overflow_queue_size":0}
{"ts":1513729195.106307,"interface":"netmap:eth5{2/xT@1","output_ring":2,"packets_forwarded":16009392,"packets_dropped":130519,"data_forward_rate_Mbps":849.3118,"data_drop_rate_Mbps":0.0000,"packet_forward_rate_kpps":77.2920,"packet_drop_rate_kpps":0.0000,"overflow_queue_size":0}
{"ts":1513729195.106307,"interface":"netmap:eth5{3/xT@1","output_ring":3,"packets_forwarded":7001918,"packets_dropped":1337878,"data_forward_rate_Mbps":36.4586,"data_drop_rate_Mbps":0.0000,"packet_forward_rate_kpps":5.6990,"packet_drop_rate_kpps":0.0000,"overflow_queue_size":0}
{"ts":1513729195.106307,"interface":"netmap:eth5{4/xT@1","output_ring":4,"packets_forwarded":5250042,"packets_dropped":1403,"data_forward_rate_Mbps":161.3338,"data_drop_rate_Mbps":0.0000,"packet_forward_rate_kpps":17.7030,"packet_drop_rate_kpps":0.0000,"overflow_queue_size":0}
{"ts":1513729195.106307,"interface":"netmap:eth5{5/xT@1","output_ring":5,"packets_forwarded":5426001,"packets_dropped":0,"data_forward_rate_Mbps":67.0789,"data_drop_rate_Mbps":0.0000,"packet_forward_rate_kpps":7.9150,"packet_drop_rate_kpps":0.0000,"overflow_queue_size":0}
{"ts":1513729195.106307,"interface":"netmap:eth5{6/xT@1","output_ring":6,"packets_forwarded":5991695,"packets_dropped":0,"data_forward_rate_Mbps":58.6742,"data_drop_rate_Mbps":0.0000,"packet_forward_rate_kpps":7.5420,"packet_drop_rate_kpps":0.0000,"overflow_queue_size":0}
{"ts":1513729195.106307,"interface":"netmap:eth5{7/xT@1","output_ring":7,"packets_forwarded":5094833,"packets_dropped":0,"data_forward_rate_Mbps":152.4217,"data_drop_rate_Mbps":0.0000,"packet_forward_rate_kpps":15.5730,"packet_drop_rate_kpps":0.0000,"overflow_queue_size":0}
{"ts":1513729195.106307,"interface":"netmap:eth5","output_ring":null,"packets_received":62232503,"packets_forwarded":55625459,"packets_dropped":1507385,"non_ip_packets":413,"data_forward_rate_Mbps":1383.4110,"data_drop_rate_Mbps":0.0000,"packet_forward_rate_kpps":143.3050,"packet_drop_rate_kpps":0.0000,"free_buffer_slots":1024}
The individual sub interfaces created by lb no longer report, but every 10 seconds (as configured) 9 identical lines (8 from -p 8 , and one from eth5) print out with the numbers no longer changing.
Interface counters on eth5 continue to move so the interface is still seeing data. As well the time it takes for this to happen seems to vary. I have reloaded the modules, run lb as a user or root, changed the configuration parameters, rebooted the system all to no avail.
Any thoughts?
scott