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bnxt_en: Keep track of the ring group resource. 

Newer firmware will return the ring group resource when we call
hwrm_func_qcaps().  To be compatible with older firmware, use the
number of tx rings as the number of ring groups if the older firmware
returns 0.  When determining how many rx rings we can support, take
the ring group resource in account as well in _bnxt_get_max_rings().
Divide and assign the ring groups to VFs.

Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Michael Chan 2015-12-27 18:19:27 -05:00 committed by David S. Miller
parent 4a21b49b34
commit b72d4a68c4
3 changed files with 18 additions and 2 deletions
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11
drivers/net/ethernet/broadcom/bnxt/bnxt.c
View File

@ -3617,6 +3617,9 @@ int bnxt_hwrm_func_qcaps(struct bnxt *bp)
pf->max_cp_rings = le16_to_cpu(resp->max_cmpl_rings); pf->max_cp_rings = le16_to_cpu(resp->max_cmpl_rings);
pf->max_tx_rings = le16_to_cpu(resp->max_tx_rings); pf->max_tx_rings = le16_to_cpu(resp->max_tx_rings);
pf->max_rx_rings = le16_to_cpu(resp->max_rx_rings); pf->max_rx_rings = le16_to_cpu(resp->max_rx_rings);
pf->max_hw_ring_grps = le32_to_cpu(resp->max_hw_ring_grps);
if (!pf->max_hw_ring_grps)
pf->max_hw_ring_grps = pf->max_tx_rings;
pf->max_l2_ctxs = le16_to_cpu(resp->max_l2_ctxs); pf->max_l2_ctxs = le16_to_cpu(resp->max_l2_ctxs);
pf->max_vnics = le16_to_cpu(resp->max_vnics); pf->max_vnics = le16_to_cpu(resp->max_vnics);
pf->max_stat_ctxs = le16_to_cpu(resp->max_stat_ctx); pf->max_stat_ctxs = le16_to_cpu(resp->max_stat_ctx);
@ -3644,6 +3647,9 @@ int bnxt_hwrm_func_qcaps(struct bnxt *bp)
vf->max_cp_rings = le16_to_cpu(resp->max_cmpl_rings); vf->max_cp_rings = le16_to_cpu(resp->max_cmpl_rings);
vf->max_tx_rings = le16_to_cpu(resp->max_tx_rings); vf->max_tx_rings = le16_to_cpu(resp->max_tx_rings);
vf->max_rx_rings = le16_to_cpu(resp->max_rx_rings); vf->max_rx_rings = le16_to_cpu(resp->max_rx_rings);
vf->max_hw_ring_grps = le32_to_cpu(resp->max_hw_ring_grps);
if (!vf->max_hw_ring_grps)
vf->max_hw_ring_grps = vf->max_tx_rings;
vf->max_l2_ctxs = le16_to_cpu(resp->max_l2_ctxs); vf->max_l2_ctxs = le16_to_cpu(resp->max_l2_ctxs);
vf->max_vnics = le16_to_cpu(resp->max_vnics); vf->max_vnics = le16_to_cpu(resp->max_vnics);
vf->max_stat_ctxs = le16_to_cpu(resp->max_stat_ctx); vf->max_stat_ctxs = le16_to_cpu(resp->max_stat_ctx);
@ -5618,25 +5624,28 @@ static int bnxt_get_max_irq(struct pci_dev *pdev)
void bnxt_get_max_rings(struct bnxt *bp, int *max_rx, int *max_tx) void bnxt_get_max_rings(struct bnxt *bp, int *max_rx, int *max_tx)
{ {
int max_rings = 0; int max_rings = 0, max_ring_grps = 0;
if (BNXT_PF(bp)) { if (BNXT_PF(bp)) {
*max_tx = bp->pf.max_tx_rings; *max_tx = bp->pf.max_tx_rings;
*max_rx = bp->pf.max_rx_rings; *max_rx = bp->pf.max_rx_rings;
max_rings = min_t(int, bp->pf.max_irqs, bp->pf.max_cp_rings); max_rings = min_t(int, bp->pf.max_irqs, bp->pf.max_cp_rings);
max_rings = min_t(int, max_rings, bp->pf.max_stat_ctxs); max_rings = min_t(int, max_rings, bp->pf.max_stat_ctxs);
max_ring_grps = bp->pf.max_hw_ring_grps;
} else { } else {
#ifdef CONFIG_BNXT_SRIOV #ifdef CONFIG_BNXT_SRIOV
*max_tx = bp->vf.max_tx_rings; *max_tx = bp->vf.max_tx_rings;
*max_rx = bp->vf.max_rx_rings; *max_rx = bp->vf.max_rx_rings;
max_rings = min_t(int, bp->vf.max_irqs, bp->vf.max_cp_rings); max_rings = min_t(int, bp->vf.max_irqs, bp->vf.max_cp_rings);
max_rings = min_t(int, max_rings, bp->vf.max_stat_ctxs); max_rings = min_t(int, max_rings, bp->vf.max_stat_ctxs);
max_ring_grps = bp->vf.max_hw_ring_grps;
#endif #endif
} }
if (bp->flags & BNXT_FLAG_AGG_RINGS) if (bp->flags & BNXT_FLAG_AGG_RINGS)
*max_rx >>= 1; *max_rx >>= 1;
*max_rx = min_t(int, *max_rx, max_rings); *max_rx = min_t(int, *max_rx, max_rings);
*max_rx = min_t(int, *max_rx, max_ring_grps);
*max_tx = min_t(int, *max_tx, max_rings); *max_tx = min_t(int, *max_tx, max_rings);
} }

2
drivers/net/ethernet/broadcom/bnxt/bnxt.h
View File

@ -695,6 +695,7 @@ struct bnxt_vf_info {
u16 max_cp_rings; u16 max_cp_rings;
u16 max_tx_rings; u16 max_tx_rings;
u16 max_rx_rings; u16 max_rx_rings;
u16 max_hw_ring_grps;
u16 max_l2_ctxs; u16 max_l2_ctxs;
u16 max_irqs; u16 max_irqs;
u16 max_vnics; u16 max_vnics;
@ -723,6 +724,7 @@ struct bnxt_pf_info {
u16 max_cp_rings; u16 max_cp_rings;
u16 max_tx_rings; /* HW assigned max tx rings for this PF */ u16 max_tx_rings; /* HW assigned max tx rings for this PF */
u16 max_rx_rings; /* HW assigned max rx rings for this PF */ u16 max_rx_rings; /* HW assigned max rx rings for this PF */
u16 max_hw_ring_grps;
u16 max_irqs; u16 max_irqs;
u16 max_l2_ctxs; u16 max_l2_ctxs;
u16 max_vnics; u16 max_vnics;

7
drivers/net/ethernet/broadcom/bnxt/bnxt_sriov.c
View File

@ -367,6 +367,7 @@ static int bnxt_hwrm_func_cfg(struct bnxt *bp, int num_vfs)
{ {
u32 rc = 0, mtu, i; u32 rc = 0, mtu, i;
u16 vf_tx_rings, vf_rx_rings, vf_cp_rings, vf_stat_ctx, vf_vnics; u16 vf_tx_rings, vf_rx_rings, vf_cp_rings, vf_stat_ctx, vf_vnics;
u16 vf_ring_grps;
struct hwrm_func_cfg_input req = {0}; struct hwrm_func_cfg_input req = {0};
struct bnxt_pf_info *pf = &bp->pf; struct bnxt_pf_info *pf = &bp->pf;
@ -388,6 +389,7 @@ static int bnxt_hwrm_func_cfg(struct bnxt *bp, int num_vfs)
num_vfs; num_vfs;
else else
vf_rx_rings = (pf->max_rx_rings - bp->rx_nr_rings) / num_vfs; vf_rx_rings = (pf->max_rx_rings - bp->rx_nr_rings) / num_vfs;
vf_ring_grps = (bp->pf.max_hw_ring_grps - bp->rx_nr_rings) / num_vfs;
vf_tx_rings = (pf->max_tx_rings - bp->tx_nr_rings) / num_vfs; vf_tx_rings = (pf->max_tx_rings - bp->tx_nr_rings) / num_vfs;
req.enables = cpu_to_le32(FUNC_CFG_REQ_ENABLES_MTU | req.enables = cpu_to_le32(FUNC_CFG_REQ_ENABLES_MTU |
@ -398,7 +400,8 @@ static int bnxt_hwrm_func_cfg(struct bnxt *bp, int num_vfs)
FUNC_CFG_REQ_ENABLES_NUM_TX_RINGS | FUNC_CFG_REQ_ENABLES_NUM_TX_RINGS |
FUNC_CFG_REQ_ENABLES_NUM_RX_RINGS | FUNC_CFG_REQ_ENABLES_NUM_RX_RINGS |
FUNC_CFG_REQ_ENABLES_NUM_L2_CTXS | FUNC_CFG_REQ_ENABLES_NUM_L2_CTXS |
FUNC_CFG_REQ_ENABLES_NUM_VNICS); FUNC_CFG_REQ_ENABLES_NUM_VNICS |
FUNC_CFG_REQ_ENABLES_NUM_HW_RING_GRPS);
mtu = bp->dev->mtu + ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN; mtu = bp->dev->mtu + ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN;
req.mru = cpu_to_le16(mtu); req.mru = cpu_to_le16(mtu);
@ -408,6 +411,7 @@ static int bnxt_hwrm_func_cfg(struct bnxt *bp, int num_vfs)
req.num_cmpl_rings = cpu_to_le16(vf_cp_rings); req.num_cmpl_rings = cpu_to_le16(vf_cp_rings);
req.num_tx_rings = cpu_to_le16(vf_tx_rings); req.num_tx_rings = cpu_to_le16(vf_tx_rings);
req.num_rx_rings = cpu_to_le16(vf_rx_rings); req.num_rx_rings = cpu_to_le16(vf_rx_rings);
req.num_hw_ring_grps = cpu_to_le16(vf_ring_grps);
req.num_l2_ctxs = cpu_to_le16(4); req.num_l2_ctxs = cpu_to_le16(4);
vf_vnics = 1; vf_vnics = 1;
@ -429,6 +433,7 @@ static int bnxt_hwrm_func_cfg(struct bnxt *bp, int num_vfs)
if (!rc) { if (!rc) {
pf->max_tx_rings -= vf_tx_rings * num_vfs; pf->max_tx_rings -= vf_tx_rings * num_vfs;
pf->max_rx_rings -= vf_rx_rings * num_vfs; pf->max_rx_rings -= vf_rx_rings * num_vfs;
pf->max_hw_ring_grps -= vf_ring_grps * num_vfs;
pf->max_cp_rings -= vf_cp_rings * num_vfs; pf->max_cp_rings -= vf_cp_rings * num_vfs;
pf->max_rsscos_ctxs -= num_vfs; pf->max_rsscos_ctxs -= num_vfs;
pf->max_stat_ctxs -= vf_stat_ctx * num_vfs; pf->max_stat_ctxs -= vf_stat_ctx * num_vfs;