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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>
This commit is contained in:
Sunil Goutham 2016-03-14 16:36:15 +05:30 committed by David S. Miller
parent 5c2e26f6f6
commit 1d368790bc
1 changed files with 34 additions and 26 deletions
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60
drivers/net/ethernet/cavium/thunder/nic.h
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@ -272,46 +272,54 @@ struct nicvf {
struct nicvf *pnicvf;
struct net_device *netdev;
struct pci_dev *pdev;
u8 vf_id;
u8 node;
u8 tns_mode:1;
u8 sqs_mode:1;
u8 loopback_supported:1;
bool hw_tso;
u16 mtu;
struct queue_set *qs;
#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];
u8 rx_queues;
u8 tx_queues;
u8 max_queues;
void __iomem *reg_base;
bool link_up;
u8 duplex;
u32 speed;
struct page *rb_page;
struct queue_set *qs;
struct nicvf_cq_poll *napi[8];
u8 vf_id;
u8 sqs_id;
bool sqs_mode;
bool hw_tso;
/* 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;
struct tasklet_struct qs_err_task;
struct tasklet_struct cq_task;
struct nicvf_cq_poll *napi[8];
struct nicvf_rss_info rss_info;
/* Secondary Qset */
u8 sqs_count;
#define MAX_SQS_PER_VF_SINGLE_NODE 5
#define MAX_SQS_PER_VF 11
struct nicvf *snicvf[MAX_SQS_PER_VF];
/* Queue count */
u8 rx_queues;
u8 tx_queues;
u8 max_queues;
u8 node;
u8 cpi_alg;
u16 mtu;
bool link_up;
u8 duplex;
u32 speed;
bool tns_mode;
bool loopback_supported;
struct nicvf_rss_info rss_info;
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;