Date: Sun, 17 Aug 2014 02:25:00 +0400 From: "Alexander V. Chernikov" <melifaro@FreeBSD.org> To: hackers@freebsd.org, "net@freebsd.org" <net@freebsd.org> Cc: Navdeep Parhar <np@FreeBSD.org> Subject: SIOCGI2C ioctl for NIC drivers Message-ID: <53EFDA3C.3010008@FreeBSD.org>
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Hello list. It seems that networking is evolving quite rapidly, so 10g nics are quite common: we have Intel, Chelsio, Mellanox, Emulex, Solarflare and Myricom drivers in our tree (maybe some others). 40G are also here: (Chelsio, Mellanox, Intel). Things like 25G NICs are also getting more interest. Most of them uses SFP+/QSPF+ (either for short range optics or passive/active twinax cabling) and we can improve diagnostics here by providing standard way to request i2c data (like vendor info and signal levels) from transceivers. Chelsio and Intel drivers already provide methods to retrieve those info, but in a different way. I'd like to add SIOCGI2C as standard ioctl for that, picking value like 61, if there are no objections.
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