Commit f049d699 authored by Michael Chan's avatar Michael Chan Committed by Jakub Kicinski
Browse files

bnxt_en: Allocate the max bp->irq_tbl size for dynamic msix allocation 



If dynamic MSIX allocation is supported, additional MSIX can be
allocated at run-time without reinitializing the existing MSIX entries.
The first step to support this dynamic scheme is to allocate a large
enough bp->irq_tbl if dynamic allocation is supported.

Reviewed-by: default avatarHongguang Gao <hongguang.gao@broadcom.com>
Reviewed-by: default avatarSomnath Kotur <somnath.kotur@broadcom.com>
Reviewed-by: default avatarSimon Horman <horms@kernel.org>
Reviewed-by: default avatarPrzemek Kitszel <przemyslaw.kitszel@intel.com>
Signed-off-by: default avatarMichael Chan <michael.chan@broadcom.com>
Link: https://patch.msgid.link/20240828183235.128948-9-michael.chan@broadcom.com


Signed-off-by: default avatarJakub Kicinski <kuba@kernel.org>
parent 4343838c

drivers/net/ethernet/broadcom/bnxt/bnxt.c

+5 −2
Original line number Diff line number Diff line
@@ -10722,7 +10722,7 @@ static int bnxt_get_num_msix(struct bnxt *bp) 


static int bnxt_init_int_mode(struct bnxt *bp)

{

	int i, total_vecs, max, rc = 0, min = 1, ulp_msix, tx_cp;

	int i, total_vecs, max, rc = 0, min = 1, ulp_msix, tx_cp, tbl_size;



	total_vecs = bnxt_get_num_msix(bp);

	max = bnxt_get_max_func_irqs(bp);
@@ -10743,7 +10743,10 @@ static int bnxt_init_int_mode(struct bnxt *bp) 
		goto msix_setup_exit;

	}



	bp->irq_tbl = kcalloc(total_vecs, sizeof(struct bnxt_irq), GFP_KERNEL);

	tbl_size = total_vecs;

	if (pci_msix_can_alloc_dyn(bp->pdev))

		tbl_size = max;

	bp->irq_tbl = kcalloc(tbl_size, sizeof(*bp->irq_tbl), GFP_KERNEL);

	if (bp->irq_tbl) {

		for (i = 0; i < total_vecs; i++)

			bp->irq_tbl[i].vector = pci_irq_vector(bp->pdev, i);