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Merge branch 'bnxt_en-Bug-fixes' 

Michael Chan says:

====================
bnxt_en: Bug fixes.

This short series fixes resource related logic in the driver, mostly
affecting the RDMA driver under corner cases.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller 2018-09-03 21:59:43 -07:00
parent 6570aa1d10 00fe9c326d
commit a104d18def
5 changed files with 20 additions and 33 deletions
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22
drivers/net/ethernet/broadcom/bnxt/bnxt.c
View File

@ -5913,12 +5913,12 @@ unsigned int bnxt_get_max_func_cp_rings(struct bnxt *bp)
return bp->hw_resc.max_cp_rings;
}
void bnxt_set_max_func_cp_rings(struct bnxt *bp, unsigned int max)
unsigned int bnxt_get_max_func_cp_rings_for_en(struct bnxt *bp)
{
bp->hw_resc.max_cp_rings = max;
return bp->hw_resc.max_cp_rings - bnxt_get_ulp_msix_num(bp);
}
unsigned int bnxt_get_max_func_irqs(struct bnxt *bp)
static unsigned int bnxt_get_max_func_irqs(struct bnxt *bp)
{
struct bnxt_hw_resc *hw_resc = &bp->hw_resc;
@ -6684,6 +6684,8 @@ static int bnxt_hwrm_if_change(struct bnxt *bp, bool up)
hw_resc->resv_rx_rings = 0;
hw_resc->resv_hw_ring_grps = 0;
hw_resc->resv_vnics = 0;
bp->tx_nr_rings = 0;
bp->rx_nr_rings = 0;
}
return rc;
}
@ -8629,7 +8631,8 @@ static void _bnxt_get_max_rings(struct bnxt *bp, int *max_rx, int *max_tx,
*max_tx = hw_resc->max_tx_rings;
*max_rx = hw_resc->max_rx_rings;
*max_cp = min_t(int, hw_resc->max_irqs, hw_resc->max_cp_rings);
*max_cp = min_t(int, bnxt_get_max_func_cp_rings_for_en(bp),
hw_resc->max_irqs);
*max_cp = min_t(int, *max_cp, hw_resc->max_stat_ctxs);
max_ring_grps = hw_resc->max_hw_ring_grps;
if (BNXT_CHIP_TYPE_NITRO_A0(bp) && BNXT_PF(bp)) {
@ -8769,20 +8772,25 @@ static int bnxt_init_dflt_ring_mode(struct bnxt *bp)
if (bp->tx_nr_rings)
return 0;
bnxt_ulp_irq_stop(bp);
bnxt_clear_int_mode(bp);
rc = bnxt_set_dflt_rings(bp, true);
if (rc) {
netdev_err(bp->dev, "Not enough rings available.\n");
return rc;
goto init_dflt_ring_err;
}
rc = bnxt_init_int_mode(bp);
if (rc)
return rc;
goto init_dflt_ring_err;
bp->tx_nr_rings_per_tc = bp->tx_nr_rings;
if (bnxt_rfs_supported(bp) && bnxt_rfs_capable(bp)) {
bp->flags |= BNXT_FLAG_RFS;
bp->dev->features |= NETIF_F_NTUPLE;
}
return 0;
init_dflt_ring_err:
bnxt_ulp_irq_restart(bp, rc);
return rc;
}
int bnxt_restore_pf_fw_resources(struct bnxt *bp)

3
drivers/net/ethernet/broadcom/bnxt/bnxt.h
View File

@ -1481,8 +1481,7 @@ int bnxt_hwrm_set_coal(struct bnxt *);
unsigned int bnxt_get_max_func_stat_ctxs(struct bnxt *bp);
void bnxt_set_max_func_stat_ctxs(struct bnxt *bp, unsigned int max);
unsigned int bnxt_get_max_func_cp_rings(struct bnxt *bp);
void bnxt_set_max_func_cp_rings(struct bnxt *bp, unsigned int max);
unsigned int bnxt_get_max_func_irqs(struct bnxt *bp);
unsigned int bnxt_get_max_func_cp_rings_for_en(struct bnxt *bp);
int bnxt_get_avail_msix(struct bnxt *bp, int num);
int bnxt_reserve_rings(struct bnxt *bp);
void bnxt_tx_disable(struct bnxt *bp);

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

@ -451,7 +451,7 @@ static int bnxt_hwrm_func_vf_resc_cfg(struct bnxt *bp, int num_vfs)
bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_FUNC_VF_RESOURCE_CFG, -1, -1);
vf_cp_rings = hw_resc->max_cp_rings - bp->cp_nr_rings;
vf_cp_rings = bnxt_get_max_func_cp_rings_for_en(bp) - bp->cp_nr_rings;
vf_stat_ctx = hw_resc->max_stat_ctxs - bp->num_stat_ctxs;
if (bp->flags & BNXT_FLAG_AGG_RINGS)
vf_rx_rings = hw_resc->max_rx_rings - bp->rx_nr_rings * 2;
@ -549,7 +549,8 @@ static int bnxt_hwrm_func_cfg(struct bnxt *bp, int num_vfs)
max_stat_ctxs = hw_resc->max_stat_ctxs;
/* Remaining rings are distributed equally amongs VF's for now */
vf_cp_rings = (hw_resc->max_cp_rings - bp->cp_nr_rings) / num_vfs;
vf_cp_rings = (bnxt_get_max_func_cp_rings_for_en(bp) -
bp->cp_nr_rings) / num_vfs;
vf_stat_ctx = (max_stat_ctxs - bp->num_stat_ctxs) / num_vfs;
if (bp->flags & BNXT_FLAG_AGG_RINGS)
vf_rx_rings = (hw_resc->max_rx_rings - bp->rx_nr_rings * 2) /
@ -643,7 +644,7 @@ static int bnxt_sriov_enable(struct bnxt *bp, int *num_vfs)
*/
vfs_supported = *num_vfs;
avail_cp = hw_resc->max_cp_rings - bp->cp_nr_rings;
avail_cp = bnxt_get_max_func_cp_rings_for_en(bp) - bp->cp_nr_rings;
avail_stat = hw_resc->max_stat_ctxs - bp->num_stat_ctxs;
avail_cp = min_t(int, avail_cp, avail_stat);

20
drivers/net/ethernet/broadcom/bnxt/bnxt_ulp.c
View File

@ -169,7 +169,6 @@ static int bnxt_req_msix_vecs(struct bnxt_en_dev *edev, int ulp_id,
edev->ulp_tbl[ulp_id].msix_requested = avail_msix;
}
bnxt_fill_msix_vecs(bp, ent);
bnxt_set_max_func_cp_rings(bp, max_cp_rings - avail_msix);
edev->flags |= BNXT_EN_FLAG_MSIX_REQUESTED;
return avail_msix;
}
@ -178,7 +177,6 @@ static int bnxt_free_msix_vecs(struct bnxt_en_dev *edev, int ulp_id)
{
struct net_device *dev = edev->net;
struct bnxt *bp = netdev_priv(dev);
int max_cp_rings, msix_requested;
ASSERT_RTNL();
if (ulp_id != BNXT_ROCE_ULP)
@ -187,9 +185,6 @@ static int bnxt_free_msix_vecs(struct bnxt_en_dev *edev, int ulp_id)
if (!(edev->flags & BNXT_EN_FLAG_MSIX_REQUESTED))
return 0;
max_cp_rings = bnxt_get_max_func_cp_rings(bp);
msix_requested = edev->ulp_tbl[ulp_id].msix_requested;
bnxt_set_max_func_cp_rings(bp, max_cp_rings + msix_requested);
edev->ulp_tbl[ulp_id].msix_requested = 0;
edev->flags &= ~BNXT_EN_FLAG_MSIX_REQUESTED;
if (netif_running(dev)) {
@ -220,21 +215,6 @@ int bnxt_get_ulp_msix_base(struct bnxt *bp)
return 0;
}
void bnxt_subtract_ulp_resources(struct bnxt *bp, int ulp_id)
{
ASSERT_RTNL();
if (bnxt_ulp_registered(bp->edev, ulp_id)) {
struct bnxt_en_dev *edev = bp->edev;
unsigned int msix_req, max;
msix_req = edev->ulp_tbl[ulp_id].msix_requested;
max = bnxt_get_max_func_cp_rings(bp);
bnxt_set_max_func_cp_rings(bp, max - msix_req);
max = bnxt_get_max_func_stat_ctxs(bp);
bnxt_set_max_func_stat_ctxs(bp, max - 1);
}
}
static int bnxt_send_msg(struct bnxt_en_dev *edev, int ulp_id,
struct bnxt_fw_msg *fw_msg)
{

1
drivers/net/ethernet/broadcom/bnxt/bnxt_ulp.h
View File

@ -90,7 +90,6 @@ static inline bool bnxt_ulp_registered(struct bnxt_en_dev *edev, int ulp_id)
int bnxt_get_ulp_msix_num(struct bnxt *bp);
int bnxt_get_ulp_msix_base(struct bnxt *bp);
void bnxt_subtract_ulp_resources(struct bnxt *bp, int ulp_id);
void bnxt_ulp_stop(struct bnxt *bp);
void bnxt_ulp_start(struct bnxt *bp);
void bnxt_ulp_sriov_cfg(struct bnxt *bp, int num_vfs);