Date: Wed, 09 Dec 2015 18:28:02 +0000 From: bugzilla-noreply@freebsd.org To: freebsd-bugs@FreeBSD.org Subject: [Bug 205164] BPF gives EIO with sendmsg() where write > pagesize Message-ID: <bug-205164-8@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=205164 Bug ID: 205164 Summary: BPF gives EIO with sendmsg() where write > pagesize Product: Base System Version: 10.2-STABLE Hardware: amd64 OS: Any Status: New Severity: Affects Only Me Priority: --- Component: kern Assignee: freebsd-bugs@FreeBSD.org Reporter: abasterfield@gmail.com I have been playing with net/vblade and jumbo frames, specifically I would like to fit a 4K block within an AOE frame, which means sending a packet slightly larger than 4K. vblade errors out with EIO in sendmsg() when asked to write over 4K to bpf fd - is this expected? NetworkPerformanceTuning on the wiki says "Sendmsg() cat't send messages more than maxdgram length. Default value causes routing software to fail with OSPF if jumbo frames is turned on. net.inet.raw.maxdgram=16384 net.inet.raw.recvspace=16384" No joy from above em0: <Intel(R) PRO/1000 Network Connection 7.4.2> port 0xe800-0xe81f mem 0xfe8e0000-0xfe8fffff,0xfe800000-0xfe87ffff,0xfe8dc000-0xfe8dffff irq 16 at device 0.0 on pci2 em0: Using MSIX interrupts with 3 vectors -- You are receiving this mail because: You are the assignee for the bug.
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