Date: Thu, 21 Jul 2011 09:32:59 +0900 From: Takuya ASADA <syuu@dokukino.com> To: soc-status@freebsd.org, Kazuya Goda <gockzy@gmail.com>, "Robert N. M. Watson" <rwatson@freebsd.org>, George Neville-Neil <gnn@freebsd.org> Subject: [mq_bpf] status report #8 Message-ID: <CALG4x-VFyKBZQCN-5qVuu1boN9=xgbs%2BpKetOtXruS==uvsXSQ@mail.gmail.com>
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*Project summary The project goal is to support multiqueue network interface on BPF, and provide interfaces for multithreaded packet processing using BPF. Modern high performance NICs have multiple receive/send queues and RSS feature, this allows to process packet concurrently on multiple processors. Main purpose of the project is to support these hardware and get benefit of parallelism. Here's status update from last week: - Implemented test_mqbpf - Move tests to src/tools/regression/bpf/mq_bpf - I realized d->bd_qmask is not protected from parallel access, it was the reason mq_bpf was unstable. BPFQ_LOCK added for it - BPFIF_LOCK rewrited as rwlock again - Measuring performance of mq_bpf using test_sqbpf/test_mqbpf Commit logs: http://p4web.freebsd.org/@@196193?ac=10 test_mqbpf implemented. http://p4web.freebsd.org/@@196219?ac=10 test_mqbpf fix, BPFIF_LOCK reverted to mtx to stabilize, remove LOG_DEBUG and SDT for debugging, HASHTYPE support for igb http://p4web.freebsd.org/@@196221?ac=10 test_mqbpf bug fix http://p4web.freebsd.org/@@196391?ac=10 remove debug logging/dtrace probe http://p4web.freebsd.org/@@196392?ac=10 Define RSSTYPE on header. http://p4web.freebsd.org/@@196395?ac=10 follow style(9). http://p4web.freebsd.org/@@196397?ac=10 NULL check before free() http://p4web.freebsd.org/@@196400?ac=10 unified variable name from rxq/txq to rxqueue/txqueue. http://p4web.freebsd.org/@@196403?ac=10 skip genarating flowid on multiqueue if. http://p4web.freebsd.org/@@196458?ac=10 lock bpf_d during reading/writing qmask, reduce number of threads on test_mqbpf http://p4web.freebsd.org/@@196464?ac=10 Rewrite BPFIF_LOCK to rwlock, rwlock for bpf_qmask added, tests moved to src/tools/regression/bpf/mq_bpf http://p4web.freebsd.org/@@196466?ac=10 NULL check is not needed for free(9), pointed out by Joshua Neal
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