diff options
| author | Sunil Goutham <sgoutham@cavium.com> | 2017-01-25 17:36:23 +0530 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-01-25 14:42:36 -0500 |
| commit | fff4ffdde175bfa4516394db95ae56153224664b (patch) | |
| tree | 5827e30dd7835a04ff116d12faa51286c2de0b0a /drivers/net/ethernet/cavium/thunder/nicvf_queues.h | |
| parent | 3979ad7e82dfe3fb94a51c3915e64ec64afa45c3 (diff) | |
net: thunderx: Support to configure queue sizes from ethtool
Adds support to set Rx/Tx queue sizes from ethtool. Fixes
an issue with retrieving queue size. Also sets SQ's CQ_LIMIT
based on configured Tx queue size such that HW doesn't process
SQEs when there is no sufficient space in CQ.
Signed-off-by: Sunil Goutham <sgoutham@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/cavium/thunder/nicvf_queues.h')
| -rw-r--r-- | drivers/net/ethernet/cavium/thunder/nicvf_queues.h | 16 |
1 files changed, 12 insertions, 4 deletions
diff --git a/drivers/net/ethernet/cavium/thunder/nicvf_queues.h b/drivers/net/ethernet/cavium/thunder/nicvf_queues.h index 9e2104675bc9..5cb84da99a2d 100644 --- a/drivers/net/ethernet/cavium/thunder/nicvf_queues.h +++ b/drivers/net/ethernet/cavium/thunder/nicvf_queues.h @@ -59,8 +59,9 @@ /* Default queue count per QS, its lengths and threshold values */ #define DEFAULT_RBDR_CNT 1 -#define SND_QSIZE SND_QUEUE_SIZE2 +#define SND_QSIZE SND_QUEUE_SIZE0 #define SND_QUEUE_LEN (1ULL << (SND_QSIZE + 10)) +#define MIN_SND_QUEUE_LEN (1ULL << (SND_QUEUE_SIZE0 + 10)) #define MAX_SND_QUEUE_LEN (1ULL << (SND_QUEUE_SIZE6 + 10)) #define SND_QUEUE_THRESH 2ULL #define MIN_SQ_DESC_PER_PKT_XMIT 2 @@ -70,11 +71,18 @@ /* Keep CQ and SQ sizes same, if timestamping * is enabled this equation will change. */ -#define CMP_QSIZE CMP_QUEUE_SIZE2 +#define CMP_QSIZE CMP_QUEUE_SIZE0 #define CMP_QUEUE_LEN (1ULL << (CMP_QSIZE + 10)) +#define MIN_CMP_QUEUE_LEN (1ULL << (CMP_QUEUE_SIZE0 + 10)) +#define MAX_CMP_QUEUE_LEN (1ULL << (CMP_QUEUE_SIZE6 + 10)) #define CMP_QUEUE_CQE_THRESH (NAPI_POLL_WEIGHT / 2) #define CMP_QUEUE_TIMER_THRESH 80 /* ~2usec */ +/* No of CQEs that might anyway gets used by HW due to pipelining + * effects irrespective of PASS/DROP/LEVELS being configured + */ +#define CMP_QUEUE_PIPELINE_RSVD 544 + #define RBDR_SIZE RBDR_SIZE0 #define RCV_BUF_COUNT (1ULL << (RBDR_SIZE + 13)) #define MAX_RCV_BUF_COUNT (1ULL << (RBDR_SIZE6 + 13)) @@ -93,8 +101,8 @@ * RED accepts pkt if unused CQE < 2304 & >= 2560 * DROPs pkts if unused CQE < 2304 */ -#define RQ_PASS_CQ_LVL 160ULL -#define RQ_DROP_CQ_LVL 144ULL +#define RQ_PASS_CQ_LVL 192ULL +#define RQ_DROP_CQ_LVL 184ULL /* RED and Backpressure levels of RBDR for pkt reception * For RBDR, level is a measure of fullness i.e 0x0 means empty |