[PATCH net-next 08/14] bnxt_en: Reserve resources for RFS.
From: Michael Chan <michael.chan@broadcom.com>
Date: 2018-01-17 08:21:40
Subsystem:
broadcom bnxt_en 50 gigabit ethernet driver, networking drivers, the rest · Maintainers:
Michael Chan, Pavan Chebbi, Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
In bnxt_rfs_capable(), add call to reserve vnic resources to support NTUPLE. Return true if we can successfully reserve enough vnics. Otherwise, reserve the minimum 1 VNIC for normal operations not supporting NTUPLE and return false. Also, suppress warning message about not enough resources for NTUPLE when only 1 RX ring is in use. NTUPLE filters by definition require multiple RX rings. Signed-off-by: Michael Chan <michael.chan@broadcom.com> --- drivers/net/ethernet/broadcom/bnxt/bnxt.c | 21 +++++++++++++++++---- 1 file changed, 17 insertions(+), 4 deletions(-)
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.c b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
index 6fc324f..8b74e6e 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.c@@ -7064,13 +7064,26 @@ static bool bnxt_rfs_capable(struct bnxt *bp) if (bp->flags & BNXT_FLAG_NEW_RSS_CAP) max_rss_ctxs = max_vnics; if (vnics > max_vnics || vnics > max_rss_ctxs) { - netdev_warn(bp->dev, - "Not enough resources to support NTUPLE filters, enough resources for up to %d rx rings\n", - min(max_rss_ctxs - 1, max_vnics - 1)); + if (bp->rx_nr_rings > 1) + netdev_warn(bp->dev, + "Not enough resources to support NTUPLE filters, enough resources for up to %d rx rings\n", + min(max_rss_ctxs - 1, max_vnics - 1)); return false; } - return true; + if (!(bp->flags & BNXT_FLAG_NEW_RM)) + return true; + + if (vnics == bp->hw_resc.resv_vnics) + return true; + + bnxt_hwrm_reserve_rings(bp, 0, 0, 0, 0, vnics); + if (vnics <= bp->hw_resc.resv_vnics) + return true; + + netdev_warn(bp->dev, "Unable to reserve resources to support NTUPLE filters.\n"); + bnxt_hwrm_reserve_rings(bp, 0, 0, 0, 0, 1); + return false; #else return false; #endif
--
1.8.3.1