diff options
Diffstat (limited to 'drivers/net/ethernet/broadcom/bnxt/bnxt.c')
-rw-r--r-- | drivers/net/ethernet/broadcom/bnxt/bnxt.c | 39 |
1 files changed, 30 insertions, 9 deletions
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.c b/drivers/net/ethernet/broadcom/bnxt/bnxt.c index a6237dd8cacd..6a1d18fc140f 100644 --- a/drivers/net/ethernet/broadcom/bnxt/bnxt.c +++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.c @@ -4756,7 +4756,7 @@ static int bnxt_cp_rings_in_use(struct bnxt *bp) static bool bnxt_need_reserve_rings(struct bnxt *bp) { struct bnxt_hw_resc *hw_resc = &bp->hw_resc; - int cp = bp->cp_nr_rings; + int cp = bnxt_cp_rings_in_use(bp); int rx = bp->rx_nr_rings; int vnic = 1, grp = rx; @@ -4783,9 +4783,9 @@ static int bnxt_trim_rings(struct bnxt *bp, int *rx, int *tx, int max, static int __bnxt_reserve_rings(struct bnxt *bp) { struct bnxt_hw_resc *hw_resc = &bp->hw_resc; + int cp = bnxt_cp_rings_in_use(bp); int tx = bp->tx_nr_rings; int rx = bp->rx_nr_rings; - int cp = bp->cp_nr_rings; int grp, rx_rings, rc; bool sh = false; int vnic = 1; @@ -5908,7 +5908,7 @@ void bnxt_set_max_func_cp_rings(struct bnxt *bp, unsigned int max) bp->hw_resc.max_cp_rings = max; } -static unsigned int bnxt_get_max_func_irqs(struct bnxt *bp) +unsigned int bnxt_get_max_func_irqs(struct bnxt *bp) { struct bnxt_hw_resc *hw_resc = &bp->hw_resc; @@ -5920,6 +5920,26 @@ void bnxt_set_max_func_irqs(struct bnxt *bp, unsigned int max_irqs) bp->hw_resc.max_irqs = max_irqs; } +int bnxt_get_avail_msix(struct bnxt *bp, int num) +{ + int max_cp = bnxt_get_max_func_cp_rings(bp); + int max_irq = bnxt_get_max_func_irqs(bp); + int total_req = bp->cp_nr_rings + num; + int max_idx, avail_msix; + + max_idx = min_t(int, bp->total_irqs, max_cp); + avail_msix = max_idx - bp->cp_nr_rings; + if (!(bp->flags & BNXT_FLAG_NEW_RM) || avail_msix >= num) + return avail_msix; + + if (max_irq < total_req) { + num = max_irq - bp->cp_nr_rings; + if (num <= 0) + return 0; + } + return num; +} + static int bnxt_get_num_msix(struct bnxt *bp) { if (!(bp->flags & BNXT_FLAG_NEW_RM)) @@ -5930,7 +5950,7 @@ static int bnxt_get_num_msix(struct bnxt *bp) static int bnxt_init_msix(struct bnxt *bp) { - int i, total_vecs, max, rc = 0, min = 1; + int i, total_vecs, max, rc = 0, min = 1, ulp_msix; struct msix_entry *msix_ent; total_vecs = bnxt_get_num_msix(bp); @@ -5951,7 +5971,8 @@ static int bnxt_init_msix(struct bnxt *bp) min = 2; total_vecs = pci_enable_msix_range(bp->pdev, msix_ent, min, total_vecs); - if (total_vecs < 0) { + ulp_msix = bnxt_get_ulp_msix_num(bp); + if (total_vecs < 0 || total_vecs < ulp_msix) { rc = -ENODEV; goto msix_setup_exit; } @@ -5964,7 +5985,7 @@ static int bnxt_init_msix(struct bnxt *bp) bp->total_irqs = total_vecs; /* Trim rings based upon num of vectors allocated */ rc = bnxt_trim_rings(bp, &bp->rx_nr_rings, &bp->tx_nr_rings, - total_vecs, min == 1); + total_vecs - ulp_msix, min == 1); if (rc) goto msix_setup_exit; @@ -6028,9 +6049,8 @@ static void bnxt_clear_int_mode(struct bnxt *bp) bp->flags &= ~BNXT_FLAG_USING_MSIX; } -static int bnxt_reserve_rings(struct bnxt *bp) +int bnxt_reserve_rings(struct bnxt *bp) { - int orig_cp = bp->hw_resc.resv_cp_rings; int tcs = netdev_get_num_tc(bp->dev); int rc; @@ -6042,7 +6062,8 @@ static int bnxt_reserve_rings(struct bnxt *bp) netdev_err(bp->dev, "ring reservation failure rc: %d\n", rc); return rc; } - if ((bp->flags & BNXT_FLAG_NEW_RM) && bp->cp_nr_rings > orig_cp) { + if ((bp->flags & BNXT_FLAG_NEW_RM) && + (bnxt_get_num_msix(bp) != bp->total_irqs)) { bnxt_clear_int_mode(bp); rc = bnxt_init_int_mode(bp); if (rc) |