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path: root/drivers/net/ethernet/intel/igbvf/igbvf.h
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* intel: Remove extern from function prototypesJoe Perches2013-09-241-11/+11
| | | | | | | | | | | | There are a mix of function prototypes with and without extern in the kernel sources. Standardize on not using extern for function prototypes. Function prototypes don't need to be written with extern. extern is assumed by the compiler. Its use is as unnecessary as using auto to declare automatic/local variables in a block. Signed-off-by: Joe Perches <joe@perches.com>
* igbvf: Make next_to_watch a pointer and adjust memory barriers to avoid racesAlexander Duyck2013-02-151-1/+1
| | | | | | | | | | | | | | | | | | This change is meant to address several race issues that become possible because next_to_watch could possibly be set to a value that shows that the descriptor is done when it is not. In order to correct that we instead make next_to_watch a pointer that is set to NULL during cleanup, and set to the eop_desc after the descriptor rings have been written. To enforce proper ordering the next_to_watch pointer is not set until after a wmb writing the values to the last descriptor in a transmit. In order to guarantee that the descriptor is not read until after the eop_desc we use the read_barrier_depends which is only really necessary on the alpha architecture. Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com> Acked-by: Greg Rose <gregory.v.rose@intel.com> Tested-by: Sibai Li <sibai.li@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
* igbvf: work around i350 erratumMitch A Williams2012-11-281-1/+1
| | | | | | | | | | On i350 VF devices, VLAN tags will be byte-swapped in the receive descriptor only when received packets are looped back from other VFs. Check for this condition and swab the tag if needed. Signed-off-by: Mitch Williams <mitch.a.williams@intel.com> Tested-by: Sibai Li <sibai.li@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
* igbvf: refactor Interrupt Throttle Rate codeMitch A Williams2012-02-071-12/+15
| | | | | | | | | | | | | | | | | | The existing ITR code is broken and confusing, with lots of similarly-named variables that do different things. Additionally, after the driver carefully determines the optimal interrupt rate for the adapter, it then ignores it and always writes a fixed, suboptimal value. This patch refactors that code to make variable names more descriptive of what they actually do, and then actually writes the calculated result to the hardware. Preliminary testing shows that netperf TCP_STREAM tests goes from ~918Mbps to ~940Mbps, and TCP_RR goes from ~2k transactions/sec up to > 8k. Signed-off-by: Mitch Williams <mitch.a.williams@intel.com> Tested-by: Robert E Garrett <robertX.e.garrett@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
* igbvf: change copyright dateMitch A Williams2012-02-031-1/+1
| | | | | | | | Change copyright date to 2012 in the source files. Signed-off-by: Mitch Williams <mitch.a.williams@intel.com> Tested-by: Robert E Garrett <robertX.e.garrett@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
* intel: Move the Intel wired LAN driversJeff Kirsher2011-08-101-0/+326
Moves the Intel wired LAN drivers into drivers/net/ethernet/intel/ and the necessary Kconfig and Makefile changes. Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
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