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Date: Tue, 27 Nov 2012 20:34:39 +0000 From: Ben Hutchings <bhutchings@...arflare.com> To: Brian Haley <brian.haley@...com> CC: David Miller <davem@...emloft.net>, Pavel Emelyanov <xemul@...allels.com>, Eric Dumazet <eric.dumazet@...il.com>, "netdev@...r.kernel.org" <netdev@...r.kernel.org> Subject: Re: [PATCH v3 net-next] sockopt: Change getsockopt() of SO_BINDTODEVICE to return an interface name On Mon, 2012-11-26 at 10:21 -0500, Brian Haley wrote: > Instead of having the getsockopt() of SO_BINDTODEVICE return an index, which > will then require another call like if_indextoname() to get the actual interface > name, have it return the name directly. > > This also matches the existing man page description on socket(7) which mentions > the argument being an interface name. > > If the value has not been set, zero is returned and optlen will be set to zero > to indicate there is no interface name present. > > Added a seqlock to protect this code path, and dev_ifname(), from someone > changing the device name via dev_change_name(). > > v2: Added seqlock protection while copying device name. > > v3: Fixed word wrap in patch. > > Signed-off-by: Brian Haley <brian.haley@...com> [...] Reviewed-by: Ben Hutchings <bhutchings@...arflare.com> -- Ben Hutchings, Staff Engineer, Solarflare Not speaking for my employer; that's the marketing department's job. They asked us to note that Solarflare product names are trademarked. -- 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
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