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authorKan Liang <kan.liang@intel.com>2016-02-19 17:24:02 +0300
committerDavid S. Miller <davem@davemloft.net>2016-02-20 06:54:09 +0300
commit421797b1aa363cb897f29f7d365e068dc9d9db81 (patch)
tree50c3851083719e586bb6c83a58f57261dab1163b /include/linux/ethtool.h
parentac2c7ad0e5d6030452c9af2fafd192e17fd04264 (diff)
downloadlinux-421797b1aa363cb897f29f7d365e068dc9d9db81.tar.xz
net/ethtool: support get coalesce per queue
This patch implements sub command ETHTOOL_GCOALESCE for ioctl ETHTOOL_PERQUEUE. It introduces an interface get_per_queue_coalesce to get coalesce of each masked queue from device driver. Then the interrupt coalescing parameters will be copied back to user space one by one. 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>
Diffstat (limited to 'include/linux/ethtool.h')
-rw-r--r--include/linux/ethtool.h8
1 files changed, 7 insertions, 1 deletions
diff --git a/include/linux/ethtool.h b/include/linux/ethtool.h
index 653dc9c4ebac..de56600023a7 100644
--- a/include/linux/ethtool.h
+++ b/include/linux/ethtool.h
@@ -201,6 +201,11 @@ static inline u32 ethtool_rxfh_indir_default(u32 index, u32 n_rx_rings)
* @get_module_eeprom: Get the eeprom information from the plug-in module
* @get_eee: Get Energy-Efficient (EEE) supported and status.
* @set_eee: Set EEE status (enable/disable) as well as LPI timers.
+ * @get_per_queue_coalesce: Get interrupt coalescing parameters per queue.
+ * It must check that the given queue number is valid. If neither a RX nor
+ * a TX queue has this number, return -EINVAL. If only a RX queue or a TX
+ * queue has this number, set the inapplicable fields to ~0 and return 0.
+ * Returns a negative error code or zero.
*
* All operations are optional (i.e. the function pointer may be set
* to %NULL) and callers must take this into account. Callers must
@@ -279,7 +284,8 @@ struct ethtool_ops {
const struct ethtool_tunable *, void *);
int (*set_tunable)(struct net_device *,
const struct ethtool_tunable *, const void *);
-
+ int (*get_per_queue_coalesce)(struct net_device *, u32,
+ struct ethtool_coalesce *);
};
#endif /* _LINUX_ETHTOOL_H */