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net: thunderx: Adjust nicvf structure to reduce cache misses

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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;