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Commit bd21b0cc authored by Arthur Kiyanovski's avatar Arthur Kiyanovski Committed by David S. Miller
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net: ena: enable the interrupt_moderation in driver_supported_features 



Add driver_supported_features to host_host info which is a new API used to
communicate to the device which features are supported by the driver.

Add the interrupt_moderation bit to host_info->driver_supported_features
and enable it to signal the device that this driver supports interrupt
moderation properly.

Reserved bits are for features implemented in the future

Signed-off-by: default avatarArthur Kiyanovski <akiyano@amazon.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent b3db86dc

drivers/net/ethernet/amazon/ena/ena_admin_defs.h

+8 −0
Original line number Diff line number Diff line
@@ -808,6 +808,12 @@ struct ena_admin_host_info { 
	u16 num_cpus;



	u16 reserved;



	/* 1 :0 : reserved

	 * 2 : interrupt_moderation

	 * 31:3 : reserved

	 */

	u32 driver_supported_features;

};



struct ena_admin_rss_ind_table_entry {
@@ -1110,6 +1116,8 @@ struct ena_admin_ena_mmio_req_read_less_resp { 
#define ENA_ADMIN_HOST_INFO_DEVICE_MASK                     GENMASK(7, 3)

#define ENA_ADMIN_HOST_INFO_BUS_SHIFT                       8

#define ENA_ADMIN_HOST_INFO_BUS_MASK                        GENMASK(15, 8)

#define ENA_ADMIN_HOST_INFO_INTERRUPT_MODERATION_SHIFT      2

#define ENA_ADMIN_HOST_INFO_INTERRUPT_MODERATION_MASK       BIT(2)



/* aenq_common_desc */

#define ENA_ADMIN_AENQ_COMMON_DESC_PHASE_MASK               BIT(0)

drivers/net/ethernet/amazon/ena/ena_netdev.c

+3 −0
Original line number Diff line number Diff line
@@ -2438,6 +2438,9 @@ static void ena_config_host_info(struct ena_com_dev *ena_dev, 
		("K"[0] << ENA_ADMIN_HOST_INFO_MODULE_TYPE_SHIFT);

	host_info->num_cpus = num_online_cpus();



	host_info->driver_supported_features =

		ENA_ADMIN_HOST_INFO_INTERRUPT_MODERATION_MASK;



	rc = ena_com_set_host_attributes(ena_dev);

	if (rc) {

		if (rc == -EOPNOTSUPP)