[PATCH net] net: mvneta: recycle the page in case of out-of-order
From: Lorenzo Bianconi <lorenzo@kernel.org>
Date: 2020-09-18 21:26:08
Subsystem:
marvell mvneta ethernet driver, networking drivers, the rest · Maintainers:
Marcin Wojtas, Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
Recycle the received page into the page_pool cache if the dma descriptors
arrived in a wrong order
Fixes: ca0e014609f05 ("net: mvneta: move skb build after descriptors processing")
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
---
drivers/net/ethernet/marvell/mvneta.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/drivers/net/ethernet/marvell/mvneta.c b/drivers/net/ethernet/marvell/mvneta.c
index 69a900081165..c4345e3d616f 100644
--- a/drivers/net/ethernet/marvell/mvneta.c
+++ b/drivers/net/ethernet/marvell/mvneta.c@@ -2383,8 +2383,12 @@ static int mvneta_rx_swbm(struct napi_struct *napi, mvneta_swbm_rx_frame(pp, rx_desc, rxq, &xdp_buf, &size, page, &ps); } else { - if (unlikely(!xdp_buf.data_hard_start)) + if (unlikely(!xdp_buf.data_hard_start)) { + rx_desc->buf_phys_addr = 0; + page_pool_put_full_page(rxq->page_pool, page, + true); continue; + } mvneta_swbm_add_rx_fragment(pp, rx_desc, rxq, &xdp_buf, &size, page);
--
2.26.2