From: Kan Liang <kan.li...@intel.com> 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.li...@intel.com> --- include/uapi/linux/ethtool.h | 18 ++++++++++++++++++ net/core/ethtool.c | 17 +++++++++++++++++ 2 files changed, 35 insertions(+) diff --git a/include/uapi/linux/ethtool.h b/include/uapi/linux/ethtool.h index cd16291..05bc92a 100644 --- a/include/uapi/linux/ethtool.h +++ b/include/uapi/linux/ethtool.h @@ -1144,6 +1144,22 @@ 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_QUEUE 4096 +#define MAX_QUEUE_MASK (MAX_QUEUE / 64) + +/** + * struct ethtool_per_queue_op - apply sub command to the queues in mask. + * @cmd: ETHTOOL_PERQUEUE + * @queue_mask: Mask the queues which sub command apply to + * @sub_command: the sub command + * @data: parameters of the command + */ +struct ethtool_per_queue_op { + __u32 cmd; + __u64 queue_mask[MAX_QUEUE_MASK]; + __u32 sub_command; + char data[]; +}; /* CMDs currently supported */ #define ETHTOOL_GSET 0x00000001 /* Get settings. */ @@ -1226,6 +1242,8 @@ enum ethtool_sfeatures_retval_bits { #define ETHTOOL_GTUNABLE 0x00000048 /* Get tunable configuration */ #define ETHTOOL_STUNABLE 0x00000049 /* Set tunable configuration */ +#define ETHTOOL_PERQUEUE 0x0000004a /* Set per queue options */ + /* compatibility with older code */ #define SPARC_ETH_GSET ETHTOOL_GSET #define SPARC_ETH_SSET ETHTOOL_SSET diff --git a/net/core/ethtool.c b/net/core/ethtool.c index 29edf74..125fb32 100644 --- a/net/core/ethtool.c +++ b/net/core/ethtool.c @@ -1748,6 +1748,20 @@ out: return ret; } +static int ethtool_set_per_queue(struct net_device *dev, void __user *useraddr) +{ + struct ethtool_per_queue_op per_queue_opt; + + if (copy_from_user(&per_queue_opt, useraddr, sizeof(per_queue_opt))) + return -EFAULT; + + switch (per_queue_opt.sub_command) { + + default: + return -EOPNOTSUPP; + }; +} + /* The main entry point in this file. Called from net/core/dev_ioctl.c */ int dev_ethtool(struct net *net, struct ifreq *ifr) @@ -1991,6 +2005,9 @@ int dev_ethtool(struct net *net, struct ifreq *ifr) case ETHTOOL_STUNABLE: rc = ethtool_set_tunable(dev, useraddr); break; + case ETHTOOL_PERQUEUE: + rc = ethtool_set_per_queue(dev, useraddr); + break; default: rc = -EOPNOTSUPP; } -- 1.7.11.7 -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html