[RFC v1 07/22] eth: bnxt: set page pool page order based on rx_page_size
From: Pavel Begunkov <asml.silence@gmail.com>
Date: 2025-07-28 11:03:23
Also in:
io-uring
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
From: Jakub Kicinski <kuba@kernel.org> If user decides to increase the buffer size for agg ring we need to ask the page pool for higher order pages. There is no need to use larger pages for header frags, if user increase the size of agg ring buffers switch to separate header page automatically. Signed-off-by: Jakub Kicinski <kuba@kernel.org> Signed-off-by: Pavel Begunkov <asml.silence@gmail.com> --- drivers/net/ethernet/broadcom/bnxt/bnxt.c | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.c b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
index 274ebd63bdd9..55685ed60519 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.c@@ -3806,6 +3806,7 @@ static int bnxt_alloc_rx_page_pool(struct bnxt *bp, pp.pool_size = bp->rx_agg_ring_size; if (BNXT_RX_PAGE_MODE(bp)) pp.pool_size += bp->rx_ring_size; + pp.order = get_order(bp->rx_page_size); pp.nid = numa_node; pp.napi = &rxr->bnapi->napi; pp.netdev = bp->dev;
@@ -3822,7 +3823,9 @@ static int bnxt_alloc_rx_page_pool(struct bnxt *bp, rxr->page_pool = pool; rxr->need_head_pool = page_pool_is_unreadable(pool); + rxr->need_head_pool |= !!pp.order; if (bnxt_separate_head_pool(rxr)) { + pp.order = 0; pp.pool_size = max(bp->rx_ring_size, 1024); pp.flags = PP_FLAG_DMA_MAP | PP_FLAG_DMA_SYNC_DEV; pool = page_pool_create(&pp);
--
2.49.0