lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
Open Source and information security mailing list archives
| ||
|
Date: Wed, 20 Oct 2010 21:19:00 -0700 From: Stephen Hemminger <shemminger@...tta.com> To: Debashis Dutt <ddutt@...cade.COM> Cc: "netdev@...r.kernel.org" <netdev@...r.kernel.org> Subject: Re: Question w.r.t debugfs / netdevice pass-through IOCTL On Wed, 20 Oct 2010 20:26:50 -0700 Debashis Dutt <ddutt@...cade.COM> wrote: > Hi, > > For the Brocade 10G Ethernet driver (bna) we want to implement a set of operations which is not supported by current tools like ethtool. > > Examples of such operations would be > a) Queries related to CEE, if the link is CEE. > b) Get traces from firmware. > > I was wondering what would be right approach to take here: > a) use debugfs (like the Chelsio cxgb4 driver) Works as long as they are really debug operations. The debugfs isn't always available, and support should be a config option for your driver. > b) use SIOCDEVPRIVATE for the pass through IOCTL defined in > struct net_device_ops{} The problem with ioctl is it doesn't work for 32 bit user space compatiablity. The ioctl compat layer does not have enough context to translate SIOCDEVPRIVATE > As per comments in the header file, b) should not be used > since this IOCTL is supposed to be deprecated. > c) use procfs / sysfs (these may not scale, in our opinion) Although less common, there were drivers putting things in /proc/net/xxx/ethX -- -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Powered by blists - more mailing lists