From: Michael Chan Date: Wed, 17 Jan 2018 08:21:10 +0000 (-0500) Subject: bnxt_en: Reserve resources for RFS. X-Git-Tag: v4.16-rc1~123^2~140^2~6 X-Git-Url: https://asedeno.scripts.mit.edu/gitweb/?a=commitdiff_plain;h=6a1eef5b9079742ecfad647892669bd5fe6b0e3f;p=linux.git bnxt_en: Reserve resources for RFS. 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 Signed-off-by: David S. Miller --- diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.c b/drivers/net/ethernet/broadcom/bnxt/bnxt.c index 6fc324f35df0..8b74e6e86bb4 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