64 lines
2.4 KiB
Diff
64 lines
2.4 KiB
Diff
From: Arthur Kiyanovski <akiyano@amazon.com>
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Date: Mon, 16 Sep 2019 14:31:29 +0300
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Subject: [PATCH] net: ena: enable the interrupt_moderation in
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driver_supported_features
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Origin: https://git.kernel.org/linus/bd21b0cc3a63d1c658b230db084b0f392b78cab2
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Bug-Debian: https://bugs.debian.org/941291
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Add driver_supported_features to host_host info which is a new API used to
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communicate to the device which features are supported by the driver.
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Add the interrupt_moderation bit to host_info->driver_supported_features
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and enable it to signal the device that this driver supports interrupt
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moderation properly.
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Reserved bits are for features implemented in the future
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Signed-off-by: Arthur Kiyanovski <akiyano@amazon.com>
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Signed-off-by: David S. Miller <davem@davemloft.net>
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---
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drivers/net/ethernet/amazon/ena/ena_admin_defs.h | 8 ++++++++
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drivers/net/ethernet/amazon/ena/ena_netdev.c | 3 +++
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2 files changed, 11 insertions(+)
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Index: linux/drivers/net/ethernet/amazon/ena/ena_admin_defs.h
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===================================================================
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--- linux.orig/drivers/net/ethernet/amazon/ena/ena_admin_defs.h
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+++ linux/drivers/net/ethernet/amazon/ena/ena_admin_defs.h
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@@ -808,6 +808,12 @@ struct ena_admin_host_info {
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u16 num_cpus;
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u16 reserved;
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+
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+ /* 1 :0 : reserved
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+ * 2 : interrupt_moderation
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+ * 31:3 : reserved
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+ */
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+ u32 driver_supported_features;
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};
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struct ena_admin_rss_ind_table_entry {
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@@ -1110,6 +1116,8 @@ struct ena_admin_ena_mmio_req_read_less_
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#define ENA_ADMIN_HOST_INFO_DEVICE_MASK GENMASK(7, 3)
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#define ENA_ADMIN_HOST_INFO_BUS_SHIFT 8
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#define ENA_ADMIN_HOST_INFO_BUS_MASK GENMASK(15, 8)
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+#define ENA_ADMIN_HOST_INFO_INTERRUPT_MODERATION_SHIFT 2
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+#define ENA_ADMIN_HOST_INFO_INTERRUPT_MODERATION_MASK BIT(2)
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/* aenq_common_desc */
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#define ENA_ADMIN_AENQ_COMMON_DESC_PHASE_MASK BIT(0)
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Index: linux/drivers/net/ethernet/amazon/ena/ena_netdev.c
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===================================================================
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--- linux.orig/drivers/net/ethernet/amazon/ena/ena_netdev.c
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+++ linux/drivers/net/ethernet/amazon/ena/ena_netdev.c
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@@ -2440,6 +2440,9 @@ static void ena_config_host_info(struct
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("K"[0] << ENA_ADMIN_HOST_INFO_MODULE_TYPE_SHIFT);
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host_info->num_cpus = num_online_cpus();
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+ host_info->driver_supported_features =
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+ ENA_ADMIN_HOST_INFO_INTERRUPT_MODERATION_MASK;
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+
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rc = ena_com_set_host_attributes(ena_dev);
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if (rc) {
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if (rc == -EOPNOTSUPP)
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