From 1d368790bc2d4111feae6fcc0b3b68d6ae92ff0f Mon Sep 17 00:00:00 2001
From: Sunil Goutham <sgoutham@cavium.com>
Date: Mon, 14 Mar 2016 16:36:15 +0530
Subject: [PATCH] net: thunderx: Adjust nicvf structure to reduce cache misses
Adjusted nicvf structure such that all elements used in hot
path like napi, xmit e.t.c fall into same cache line. This reduced
no of cache misses and resulted in ~2% increase in no of packets
handled on a core.
Also modified elements with :1 notation to boolean, to be
consistent with other element definitions.
Signed-off-by: Sunil Goutham <sgoutham@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
drivers/net/ethernet/cavium/thunder/nic.h | 52 +++++++++++++----------
1 file changed, 30 insertions(+), 22 deletions(-)
diff --git a/drivers/net/ethernet/cavium/thunder/nic.h b/drivers/net/ethernet/cavium/thunder/nic.h
index 872b22d831ee..83025bb4737c 100644
--- a/drivers/net/ethernet/cavium/thunder/nic.h
+++ b/drivers/net/ethernet/cavium/thunder/nic.h
@@ -272,46 +272,54 @@ struct nicvf {
struct nicvf *pnicvf;
struct net_device *netdev;
struct pci_dev *pdev;
+ void __iomem *reg_base;
+ struct queue_set *qs;
+ struct nicvf_cq_poll *napi[8];
u8 vf_id;
- u8 node;
- u8 tns_mode:1;
- u8 sqs_mode:1;
- u8 loopback_supported:1;
+ u8 sqs_id;
+ bool sqs_mode;
bool hw_tso;
- u16 mtu;
- struct queue_set *qs;
+
+ /* Receive buffer alloc */
+ u32 rb_page_offset;
+ u16 rb_pageref;
+ bool rb_alloc_fail;
+ bool rb_work_scheduled;
+ struct page *rb_page;
+ struct delayed_work rbdr_work;
+ struct tasklet_struct rbdr_task;
+
+ /* Secondary Qset */
+ u8 sqs_count;
#define MAX_SQS_PER_VF_SINGLE_NODE 5
#define MAX_SQS_PER_VF 11
- u8 sqs_id;
- u8 sqs_count; /* Secondary Qset count */
struct nicvf *snicvf[MAX_SQS_PER_VF];
+
+ /* Queue count */
u8 rx_queues;
u8 tx_queues;
u8 max_queues;
- void __iomem *reg_base;
+
+ u8 node;
+ u8 cpi_alg;
+ u16 mtu;
bool link_up;
u8 duplex;
u32 speed;
- struct page *rb_page;
- u32 rb_page_offset;
- u16 rb_pageref;
- bool rb_alloc_fail;
- bool rb_work_scheduled;
- struct delayed_work rbdr_work;
- struct tasklet_struct rbdr_task;
- struct tasklet_struct qs_err_task;
- struct tasklet_struct cq_task;
- struct nicvf_cq_poll *napi[8];
+ bool tns_mode;
+ bool loopback_supported;
struct nicvf_rss_info rss_info;
- u8 cpi_alg;
+ struct tasklet_struct qs_err_task;
+ struct work_struct reset_task;
+
/* Interrupt coalescing settings */
u32 cq_coalesce_usecs;
-
u32 msg_enable;
+
+ /* Stats */
struct nicvf_hw_stats hw_stats;
struct nicvf_drv_stats drv_stats;
struct bgx_stats bgx_stats;
- struct work_struct reset_task;
/* MSI-X */
bool msix_enabled;
--
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