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net/bnxt: fix VF resource allocation

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If the resource requirement of a VF is more than what is allotted
to it by the FW, a VF can request to reallocate some of the resources.

This is possible only when the NIC is running the Resource Manager aware
CHiMP FW.

If necessary, calculate Tx and Rx ring count using the new RM API.
Otherwise use the Tx and Rx ring count as-is. Update the cp ring count
based on the Tx and Rx ring count.

Fixes: b7778e8a1c ("net/bnxt: refactor to properly allocate resources for PF/VF")

Signed-off-by: Jay Ding <jay.ding@broadcom.com>
Signed-off-by: Scott Branden <scott.branden@broadcom.com>
Reviewed-by: Ray Jui <ray.jui@broadcom.com>
Reviewed-by: Randy Schacher <stuart.schacher@broadcom.com>
Signed-off-by: Ajit Khaparde <ajit.khaparde@broadcom.com>
This commit is contained in:
Ajit Khaparde 2018-05-22 11:13:45 -07:00 committed by Ferruh Yigit
parent 2b947bd294
commit edafb57ba4
5 changed files with 98 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
drivers/net/bnxt/bnxt.h
View File

@ -220,6 +220,7 @@ struct bnxt {
#define BNXT_FLAG_UPDATE_HASH (1 << 5)
#define BNXT_FLAG_PTP_SUPPORTED (1 << 6)
#define BNXT_FLAG_MULTI_HOST (1 << 7)
#define BNXT_FLAG_NEW_RM (1 << 30)
#define BNXT_FLAG_INIT_DONE (1 << 31)
#define BNXT_PF(bp) (!((bp)->flags & BNXT_FLAG_VF))
#define BNXT_VF(bp) ((bp)->flags & BNXT_FLAG_VF)

25
drivers/net/bnxt/bnxt_ethdev.c
View File

@ -406,9 +406,7 @@ static void bnxt_dev_info_get_op(struct rte_eth_dev *eth_dev,
/* PF/VF specifics */
if (BNXT_PF(bp))
dev_info->max_vfs = bp->pdev->max_vfs;
max_rx_rings = RTE_MIN(bp->max_vnics, RTE_MIN(bp->max_l2_ctx,
RTE_MIN(bp->max_rsscos_ctx,
bp->max_stat_ctx)));
max_rx_rings = RTE_MIN(bp->max_vnics, bp->max_stat_ctx);
/* For the sake of symmetry, max_rx_queues = max_tx_queues */
dev_info->max_rx_queues = max_rx_rings;
dev_info->max_tx_queues = max_rx_rings;
@ -494,6 +492,25 @@ static int bnxt_dev_configure_op(struct rte_eth_dev *eth_dev)
bp->rx_queues = (void *)eth_dev->data->rx_queues;
bp->tx_queues = (void *)eth_dev->data->tx_queues;
bp->tx_nr_rings = eth_dev->data->nb_tx_queues;
bp->rx_nr_rings = eth_dev->data->nb_rx_queues;
if (BNXT_VF(bp) && (bp->flags & BNXT_FLAG_NEW_RM)) {
int rc;
rc = bnxt_hwrm_func_reserve_vf_resc(bp);
if (rc) {
PMD_DRV_LOG(ERR, "HWRM resource alloc fail:%x\n", rc);
return -ENOSPC;
}
/* legacy driver needs to get updated values */
rc = bnxt_hwrm_func_qcaps(bp);
if (rc) {
PMD_DRV_LOG(ERR, "hwrm func qcaps fail:%d\n", rc);
return -ENOSPC;
}
}
/* Inherit new configurations */
if (eth_dev->data->nb_rx_queues > bp->max_rx_rings ||
@ -516,8 +533,6 @@ static int bnxt_dev_configure_op(struct rte_eth_dev *eth_dev)
return -ENOSPC;
}
bp->rx_nr_rings = eth_dev->data->nb_rx_queues;
bp->tx_nr_rings = eth_dev->data->nb_tx_queues;
bp->rx_cp_nr_rings = bp->rx_nr_rings;
bp->tx_cp_nr_rings = bp->tx_nr_rings;

75
drivers/net/bnxt/bnxt_hwrm.c
View File

@ -27,6 +27,7 @@
#include <rte_io.h>
#define HWRM_CMD_TIMEOUT 10000
#define HWRM_SPEC_CODE_1_8_3 0x10803
#define HWRM_VERSION_1_9_1 0x10901
struct bnxt_plcmodes_cfg {
@ -483,7 +484,7 @@ static int bnxt_hwrm_ptp_qcfg(struct bnxt *bp)
return 0;
}
int bnxt_hwrm_func_qcaps(struct bnxt *bp)
static int __bnxt_hwrm_func_qcaps(struct bnxt *bp)
{
int rc = 0;
struct hwrm_func_qcaps_input req = {.req_type = 0 };
@ -573,6 +574,20 @@ int bnxt_hwrm_func_qcaps(struct bnxt *bp)
return rc;
}
int bnxt_hwrm_func_qcaps(struct bnxt *bp)
{
int rc;
rc = __bnxt_hwrm_func_qcaps(bp);
if (!rc && bp->hwrm_spec_code >= HWRM_SPEC_CODE_1_8_3) {
rc = bnxt_hwrm_func_resc_qcaps(bp);
if (!rc)
bp->flags |= BNXT_FLAG_NEW_RM;
}
return rc;
}
int bnxt_hwrm_func_reset(struct bnxt *bp)
{
int rc = 0;
@ -642,6 +657,64 @@ int bnxt_hwrm_func_driver_register(struct bnxt *bp)
return rc;
}
int bnxt_hwrm_func_reserve_vf_resc(struct bnxt *bp)
{
int rc;
struct hwrm_func_vf_cfg_output *resp = bp->hwrm_cmd_resp_addr;
struct hwrm_func_vf_cfg_input req = {0};
HWRM_PREP(req, FUNC_VF_CFG);
req.enables = rte_cpu_to_le_32
(HWRM_FUNC_VF_CFG_INPUT_ENABLES_NUM_RX_RINGS |
HWRM_FUNC_VF_CFG_INPUT_ENABLES_NUM_TX_RINGS |
HWRM_FUNC_VF_CFG_INPUT_ENABLES_NUM_STAT_CTXS |
HWRM_FUNC_VF_CFG_INPUT_ENABLES_NUM_CMPL_RINGS |
HWRM_FUNC_VF_CFG_INPUT_ENABLES_NUM_HW_RING_GRPS);
req.num_tx_rings = rte_cpu_to_le_16(bp->tx_nr_rings);
req.num_rx_rings = rte_cpu_to_le_16(bp->rx_nr_rings *
AGG_RING_MULTIPLIER);
req.num_stat_ctxs = rte_cpu_to_le_16(bp->rx_nr_rings + bp->tx_nr_rings);
req.num_cmpl_rings = rte_cpu_to_le_16(bp->rx_nr_rings +
bp->tx_nr_rings);
req.num_hw_ring_grps = rte_cpu_to_le_16(bp->rx_nr_rings);
rc = bnxt_hwrm_send_message(bp, &req, sizeof(req));
HWRM_CHECK_RESULT();
HWRM_UNLOCK();
return rc;
}
int bnxt_hwrm_func_resc_qcaps(struct bnxt *bp)
{
int rc;
struct hwrm_func_resource_qcaps_output *resp = bp->hwrm_cmd_resp_addr;
struct hwrm_func_resource_qcaps_input req = {0};
HWRM_PREP(req, FUNC_RESOURCE_QCAPS);
req.fid = rte_cpu_to_le_16(0xffff);
rc = bnxt_hwrm_send_message(bp, &req, sizeof(req));
HWRM_CHECK_RESULT();
if (BNXT_VF(bp)) {
bp->max_rsscos_ctx = rte_le_to_cpu_16(resp->max_rsscos_ctx);
bp->max_cp_rings = rte_le_to_cpu_16(resp->max_cmpl_rings);
bp->max_tx_rings = rte_le_to_cpu_16(resp->max_tx_rings);
bp->max_rx_rings = rte_le_to_cpu_16(resp->max_rx_rings);
bp->max_ring_grps = rte_le_to_cpu_32(resp->max_hw_ring_grps);
bp->max_l2_ctx = rte_le_to_cpu_16(resp->max_l2_ctxs);
bp->max_vnics = rte_le_to_cpu_16(resp->max_vnics);
bp->max_stat_ctx = rte_le_to_cpu_16(resp->max_stat_ctx);
}
HWRM_UNLOCK();
return rc;
}
int bnxt_hwrm_ver_get(struct bnxt *bp)
{
int rc = 0;

2
drivers/net/bnxt/bnxt_hwrm.h
View File

@ -111,6 +111,8 @@ int bnxt_alloc_hwrm_resources(struct bnxt *bp);
int bnxt_get_hwrm_link_config(struct bnxt *bp, struct rte_eth_link *link);
int bnxt_set_hwrm_link_config(struct bnxt *bp, bool link_up);
int bnxt_hwrm_func_qcfg(struct bnxt *bp);
int bnxt_hwrm_func_resc_qcaps(struct bnxt *bp);
int bnxt_hwrm_func_reserve_vf_resc(struct bnxt *bp);
int bnxt_hwrm_allocate_pf_only(struct bnxt *bp);
int bnxt_hwrm_allocate_vfs(struct bnxt *bp, int num_vfs);
int bnxt_hwrm_func_vf_mac(struct bnxt *bp, uint16_t vf,

1
drivers/net/bnxt/bnxt_ring.h
View File

@ -28,6 +28,7 @@
#define BNXT_TPA_MAX 64
#define AGG_RING_SIZE_FACTOR 2
#define AGG_RING_MULTIPLIER 2
/* These assume 4k pages */
#define MAX_RX_DESC_CNT (8 * 1024)