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Date: Sun, 13 Sep 2020 11:20:54 +0300
From: Shay Agroskin <shayagr@...zon.com>
To: <davem@...emloft.net>, <netdev@...r.kernel.org>
CC: Shay Agroskin <shayagr@...zon.com>, <dwmw@...zon.com>,
<zorik@...zon.com>, <matua@...zon.com>, <saeedb@...zon.com>,
<msw@...zon.com>, <aliguori@...zon.com>, <nafea@...zon.com>,
<gtzalik@...zon.com>, <netanel@...zon.com>, <alisaidi@...zon.com>,
<benh@...zon.com>, <akiyano@...zon.com>, <sameehj@...zon.com>,
<ndagan@...zon.com>, Amit Bernstein <amitbern@...zon.com>
Subject: [PATCH V1 net-next 6/8] net: ena: Change RSS related macros and variables names
The formal name changes to "ENA_ADMIN_RSS_INDIRECTION_TABLE_CONFIG".
Indirection is the ability to reference "something" using "something else"
instead of the value itself.
Indirection table, as the name implies, is the ability to reference
CPU/Queue value using hash-to-CPU table instead of CPU/Queue itself.
This patch renames the variable keys_num, which describes the number of
words in the RSS hash key, to key_parts which makes its purpose clearer
in RSS context.
Signed-off-by: Amit Bernstein <amitbern@...zon.com>
Signed-off-by: Shay Agroskin <shayagr@...zon.com>
---
.../device_drivers/ethernet/amazon/ena.rst | 2 +-
.../net/ethernet/amazon/ena/ena_admin_defs.h | 7 +++---
drivers/net/ethernet/amazon/ena/ena_com.c | 22 +++++++++----------
3 files changed, 16 insertions(+), 15 deletions(-)
diff --git a/Documentation/networking/device_drivers/ethernet/amazon/ena.rst b/Documentation/networking/device_drivers/ethernet/amazon/ena.rst
index 11af6388ea87..a666913d9b5b 100644
--- a/Documentation/networking/device_drivers/ethernet/amazon/ena.rst
+++ b/Documentation/networking/device_drivers/ethernet/amazon/ena.rst
@@ -274,7 +274,7 @@ RSS
inputs for hash functions.
- The driver configures RSS settings using the AQ SetFeature command
(ENA_ADMIN_RSS_HASH_FUNCTION, ENA_ADMIN_RSS_HASH_INPUT and
- ENA_ADMIN_RSS_REDIRECTION_TABLE_CONFIG properties).
+ ENA_ADMIN_RSS_INDIRECTION_TABLE_CONFIG properties).
- If the NETIF_F_RXHASH flag is set, the 32-bit result of the hash
function delivered in the Rx CQ descriptor is set in the received
SKB.
diff --git a/drivers/net/ethernet/amazon/ena/ena_admin_defs.h b/drivers/net/ethernet/amazon/ena/ena_admin_defs.h
index a41949df16f4..871d973d7b97 100644
--- a/drivers/net/ethernet/amazon/ena/ena_admin_defs.h
+++ b/drivers/net/ethernet/amazon/ena/ena_admin_defs.h
@@ -5,6 +5,7 @@
#ifndef _ENA_ADMIN_H_
#define _ENA_ADMIN_H_
+#define ENA_ADMIN_RSS_KEY_PARTS 10
enum ena_admin_aq_opcode {
ENA_ADMIN_CREATE_SQ = 1,
@@ -37,7 +38,7 @@ enum ena_admin_aq_feature_id {
ENA_ADMIN_MAX_QUEUES_EXT = 7,
ENA_ADMIN_RSS_HASH_FUNCTION = 10,
ENA_ADMIN_STATELESS_OFFLOAD_CONFIG = 11,
- ENA_ADMIN_RSS_REDIRECTION_TABLE_CONFIG = 12,
+ ENA_ADMIN_RSS_INDIRECTION_TABLE_CONFIG = 12,
ENA_ADMIN_MTU = 14,
ENA_ADMIN_RSS_HASH_INPUT = 18,
ENA_ADMIN_INTERRUPT_MODERATION = 20,
@@ -716,11 +717,11 @@ enum ena_admin_hash_functions {
};
struct ena_admin_feature_rss_flow_hash_control {
- u32 keys_num;
+ u32 key_parts;
u32 reserved;
- u32 key[10];
+ u32 key[ENA_ADMIN_RSS_KEY_PARTS];
};
struct ena_admin_feature_rss_flow_hash_function {
diff --git a/drivers/net/ethernet/amazon/ena/ena_com.c b/drivers/net/ethernet/amazon/ena/ena_com.c
index 6a24c9a337b2..35bef11d8697 100644
--- a/drivers/net/ethernet/amazon/ena/ena_com.c
+++ b/drivers/net/ethernet/amazon/ena/ena_com.c
@@ -1083,11 +1083,10 @@ static void ena_com_hash_key_fill_default_key(struct ena_com_dev *ena_dev)
(ena_dev->rss).hash_key;
netdev_rss_key_fill(&hash_key->key, sizeof(hash_key->key));
- /* The key is stored in the device in u32 array
- * as well as the API requires the key to be passed in this
- * format. Thus the size of our array should be divided by 4
+ /* The key buffer is stored in the device in an array of
+ * uint32 elements.
*/
- hash_key->keys_num = sizeof(hash_key->key) / sizeof(u32);
+ hash_key->key_parts = ENA_ADMIN_RSS_KEY_PARTS;
}
static int ena_com_hash_key_allocate(struct ena_com_dev *ena_dev)
@@ -1151,7 +1150,7 @@ static int ena_com_indirect_table_allocate(struct ena_com_dev *ena_dev,
int ret;
ret = ena_com_get_feature(ena_dev, &get_resp,
- ENA_ADMIN_RSS_REDIRECTION_TABLE_CONFIG, 0);
+ ENA_ADMIN_RSS_INDIRECTION_TABLE_CONFIG, 0);
if (unlikely(ret))
return ret;
@@ -2389,7 +2388,7 @@ int ena_com_fill_hash_function(struct ena_com_dev *ena_dev,
}
memcpy(hash_key->key, key, key_len);
rss->hash_init_val = init_val;
- hash_key->keys_num = key_len >> 2;
+ hash_key->key_parts = key_len / sizeof(hash_key->key[0]);
}
break;
case ENA_ADMIN_CRC32:
@@ -2444,7 +2443,8 @@ int ena_com_get_hash_key(struct ena_com_dev *ena_dev, u8 *key)
ena_dev->rss.hash_key;
if (key)
- memcpy(key, hash_key->key, (size_t)(hash_key->keys_num) << 2);
+ memcpy(key, hash_key->key,
+ (size_t)(hash_key->key_parts) * sizeof(hash_key->key[0]));
return 0;
}
@@ -2642,9 +2642,9 @@ int ena_com_indirect_table_set(struct ena_com_dev *ena_dev)
int ret;
if (!ena_com_check_supported_feature_id(
- ena_dev, ENA_ADMIN_RSS_REDIRECTION_TABLE_CONFIG)) {
+ ena_dev, ENA_ADMIN_RSS_INDIRECTION_TABLE_CONFIG)) {
dev_dbg(ena_dev->dmadev, "Feature %d isn't supported\n",
- ENA_ADMIN_RSS_REDIRECTION_TABLE_CONFIG);
+ ENA_ADMIN_RSS_INDIRECTION_TABLE_CONFIG);
return -EOPNOTSUPP;
}
@@ -2660,7 +2660,7 @@ int ena_com_indirect_table_set(struct ena_com_dev *ena_dev)
cmd.aq_common_descriptor.opcode = ENA_ADMIN_SET_FEATURE;
cmd.aq_common_descriptor.flags =
ENA_ADMIN_AQ_COMMON_DESC_CTRL_DATA_INDIRECT_MASK;
- cmd.feat_common.feature_id = ENA_ADMIN_RSS_REDIRECTION_TABLE_CONFIG;
+ cmd.feat_common.feature_id = ENA_ADMIN_RSS_INDIRECTION_TABLE_CONFIG;
cmd.u.ind_table.size = rss->tbl_log_size;
cmd.u.ind_table.inline_index = 0xFFFFFFFF;
@@ -2699,7 +2699,7 @@ int ena_com_indirect_table_get(struct ena_com_dev *ena_dev, u32 *ind_tbl)
sizeof(struct ena_admin_rss_ind_table_entry);
rc = ena_com_get_feature_ex(ena_dev, &get_resp,
- ENA_ADMIN_RSS_REDIRECTION_TABLE_CONFIG,
+ ENA_ADMIN_RSS_INDIRECTION_TABLE_CONFIG,
rss->rss_ind_tbl_dma_addr,
tbl_size, 0);
if (unlikely(rc))
--
2.17.1
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