Date: Mon, 31 Jul 2023 15:34:37 +0000 From: bugzilla-noreply@freebsd.org To: bugs@FreeBSD.org Subject: [Bug 272780] genet: General question of DMA alignment requirement for tx/rx_buf Message-ID: <bug-272780-227-hkCJ47wewv@https.bugs.freebsd.org/bugzilla/> In-Reply-To: <bug-272780-227@https.bugs.freebsd.org/bugzilla/> References: <bug-272780-227@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D272780 Mark Johnston <markj@FreeBSD.org> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |karels@freebsd.org, | |markj@FreeBSD.org Status|New |Open --- Comment #1 from Mark Johnston <markj@FreeBSD.org> --- CC'ing Mike Karels, who imported the driver. I suspect that genet does this so that the IP header is 4-byte aligned, sin= ce that could make accesses to header fields more efficient. But indeed, it's rather strange that rx_buf_tag is defined with an alignment of 4. I'd expe= ct that to result in extra copying. --=20 You are receiving this mail because: You are the assignee for the bug.=
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