From 47558acd56a74c1ac598093930a5559270bf8c09 Mon Sep 17 00:00:00 2001 From: Michael Chan Date: Thu, 26 Apr 2018 17:44:44 -0400 Subject: [PATCH] bnxt_en: Reserve rings at driver open if none was reserved at probe time. Add logic to reserve default rings at driver open time if none was reserved during probe time. This will happen when the PF driver did not provision minimum rings to the VF, due to more limited resources. Driver open will only succeed if some minimum rings can be reserved. Signed-off-by: Michael Chan Signed-off-by: David S. Miller --- drivers/net/ethernet/broadcom/bnxt/bnxt.c | 31 +++++++++++++++++++++++ 1 file changed, 31 insertions(+) diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.c b/drivers/net/ethernet/broadcom/bnxt/bnxt.c index fee1c0df146f..efe5c7203f60 100644 --- a/drivers/net/ethernet/broadcom/bnxt/bnxt.c +++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.c @@ -6844,6 +6844,8 @@ static void bnxt_preset_reg_win(struct bnxt *bp) } } +static int bnxt_init_dflt_ring_mode(struct bnxt *bp); + static int __bnxt_open_nic(struct bnxt *bp, bool irq_re_init, bool link_re_init) { int rc = 0; @@ -6851,6 +6853,12 @@ static int __bnxt_open_nic(struct bnxt *bp, bool irq_re_init, bool link_re_init) bnxt_preset_reg_win(bp); netif_carrier_off(bp->dev); if (irq_re_init) { + /* Reserve rings now if none were reserved at driver probe. */ + rc = bnxt_init_dflt_ring_mode(bp); + if (rc) { + netdev_err(bp->dev, "Failed to reserve default rings at open\n"); + return rc; + } rc = bnxt_reserve_rings(bp); if (rc) return rc; @@ -8600,6 +8608,29 @@ static int bnxt_set_dflt_rings(struct bnxt *bp, bool sh) return rc; } +static int bnxt_init_dflt_ring_mode(struct bnxt *bp) +{ + int rc; + + if (bp->tx_nr_rings) + return 0; + + rc = bnxt_set_dflt_rings(bp, true); + if (rc) { + netdev_err(bp->dev, "Not enough rings available.\n"); + return rc; + } + rc = bnxt_init_int_mode(bp); + if (rc) + return rc; + 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; +} + int bnxt_restore_pf_fw_resources(struct bnxt *bp) { int rc;