Commit 40d83539 authored by Shannon Nelson's avatar Shannon Nelson Committed by David S. Miller
Browse files

ionic: add a check for max SGs and SKB frags 



Add a check of the queue's max_sg_elems against the maximum frags we
expect to see per SKB and take the smaller of the two as our max for
the queues' descriptor buffer allocations.

Signed-off-by: default avatarShannon Nelson <shannon.nelson@amd.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 4d9d7220

drivers/net/ethernet/pensando/ionic/ionic_lif.c

+12 −0
Original line number Diff line number Diff line
@@ -3831,6 +3831,18 @@ static void ionic_lif_queue_identify(struct ionic_lif *lif) 
			qtype, qti->max_sg_elems);

		dev_dbg(ionic->dev, " qtype[%d].sg_desc_stride = %d\n",

			qtype, qti->sg_desc_stride);



		if (qti->max_sg_elems >= IONIC_MAX_FRAGS) {

			qti->max_sg_elems = IONIC_MAX_FRAGS - 1;

			dev_dbg(ionic->dev, "limiting qtype %d max_sg_elems to IONIC_MAX_FRAGS-1 %d\n",

				qtype, qti->max_sg_elems);

		}



		if (qti->max_sg_elems > MAX_SKB_FRAGS) {

			qti->max_sg_elems = MAX_SKB_FRAGS;

			dev_dbg(ionic->dev, "limiting qtype %d max_sg_elems to MAX_SKB_FRAGS %d\n",

				qtype, qti->max_sg_elems);

		}

	}

}