From: Edwin Peer <edwin.peer@broadcom.com>
Date: Wed, 26 Aug 2020 01:08:38 -0400
Subject: bnxt_en: init RSS table for Minimal-Static VF reservation
Patch-mainline: v5.9-rc4
Git-commit: 5fa65524f6e0b9528c6ceac3f33f7e8f0c3a084a
References: jsc#SLE-15075
There are no VF rings available during probe when the device is configured
using the Minimal-Static reservation strategy. In this case, the RSS
indirection table can only be initialized later, during bnxt_open_nic().
However, this was not happening because the rings will already have been
reserved via bnxt_init_dflt_ring_mode(), causing bnxt_need_reserve_rings()
to return false in bnxt_reserve_rings() and bypass the RSS table init.
Solve this by pushing the call to bnxt_set_dflt_rss_indir_tbl() into
__bnxt_reserve_rings(), which is common to both paths and is called
whenever ring configuration is changed. After doing this, the RSS table
init that must be called from bnxt_init_one() happens implicitly via
bnxt_set_default_rings(), necessitating doing the allocation earlier in
order to avoid a null pointer dereference.
Fixes: bd3191b5d87d ("bnxt_en: Implement ethtool -X to set indirection table.")
Signed-off-by: Edwin Peer <edwin.peer@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
drivers/net/ethernet/broadcom/bnxt/bnxt.c | 15 +++++++--------
1 file changed, 7 insertions(+), 8 deletions(-)
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
@@ -6223,6 +6223,9 @@ static int __bnxt_reserve_rings(struct b
if (!tx || !rx || !cp || !grp || !vnic || !stat)
return -ENOMEM;
+ if (!netif_is_rxfh_configured(bp->dev))
+ bnxt_set_dflt_rss_indir_tbl(bp);
+
return rc;
}
@@ -8504,9 +8507,6 @@ int bnxt_reserve_rings(struct bnxt *bp,
rc = bnxt_init_int_mode(bp);
bnxt_ulp_irq_restart(bp, rc);
}
- if (!netif_is_rxfh_configured(bp->dev))
- bnxt_set_dflt_rss_indir_tbl(bp);
-
if (rc) {
netdev_err(bp->dev, "ring reservation/IRQ init failure rc: %d\n", rc);
return rc;
@@ -12217,6 +12217,10 @@ static int bnxt_init_one(struct pci_dev
if (BNXT_CHIP_P5(bp))
bp->flags |= BNXT_FLAG_CHIP_P5;
+ rc = bnxt_alloc_rss_indir_tbl(bp);
+ if (rc)
+ goto init_err_pci_clean;
+
rc = bnxt_fw_init_one_p2(bp);
if (rc)
goto init_err_pci_clean;
@@ -12321,11 +12325,6 @@ static int bnxt_init_one(struct pci_dev
*/
bp->tx_nr_rings_per_tc = bp->tx_nr_rings;
- rc = bnxt_alloc_rss_indir_tbl(bp);
- if (rc)
- goto init_err_pci_clean;
- bnxt_set_dflt_rss_indir_tbl(bp);
-
if (BNXT_PF(bp)) {
if (!bnxt_pf_wq) {
bnxt_pf_wq =