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net/ethtool: introduce a new ioctl for per queue setting

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Introduce a new ioctl ETHTOOL_PERQUEUE for per queue parameters setting.
The following patches will enable some SUB_COMMANDs for per queue
setting.

Signed-off-by: Kan Liang <kan.liang@intel.com>
Reviewed-by: Ben Hutchings <ben@decadent.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Kan Liang
2016-02-19 09:24:01 -05:00
committed by David S. Miller
parent 5fd003f56c
commit ac2c7ad0e5
2 changed files with 42 additions and 2 deletions
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17
include/uapi/linux/ethtool.h
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@@ -1202,6 +1202,21 @@ enum ethtool_sfeatures_retval_bits {
#define ETHTOOL_F_WISH (1 << ETHTOOL_F_WISH__BIT)
#define ETHTOOL_F_COMPAT (1 << ETHTOOL_F_COMPAT__BIT)
#define MAX_NUM_QUEUE 4096
/**
* struct ethtool_per_queue_op - apply sub command to the queues in mask.
* @cmd: ETHTOOL_PERQUEUE
* @sub_command: the sub command which apply to each queues
* @queue_mask: Bitmap of the queues which sub command apply to
* @data: A complete command structure following for each of the queues addressed
*/
struct ethtool_per_queue_op {
__u32 cmd;
__u32 sub_command;
__u32 queue_mask[DIV_ROUND_UP(MAX_NUM_QUEUE, 32)];
char data[];
};
/* CMDs currently supported */
#define ETHTOOL_GSET 0x00000001 /* Get settings. */
@@ -1285,6 +1300,8 @@ enum ethtool_sfeatures_retval_bits {
#define ETHTOOL_STUNABLE 0x00000049 /* Set tunable configuration */
#define ETHTOOL_GPHYSTATS 0x0000004a /* get PHY-specific statistics */
#define ETHTOOL_PERQUEUE 0x0000004b /* Set per queue options */
/* compatibility with older code */
#define SPARC_ETH_GSET ETHTOOL_GSET
#define SPARC_ETH_SSET ETHTOOL_SSET