diff mbox series

[03/13] net/cnxk: fix later skip to include mbuf priv

Message ID 20221011120135.45846-3-ndabilpuram@marvell.com (mailing list archive)
State Changes Requested, archived
Delegated to: Jerin Jacob
Headers
Series [01/13] common/cnxk: set MTU size on SDP based on SoC type |

Checks

Context Check Description
ci/checkpatch success coding style OK

Commit Message

Nithin Dabilpuram Oct. 11, 2022, 12:01 p.m. UTC 
  Fix later skip to include mbuf priv data as mbuf->buf_addr
is populated based on calculation including per-mbuf priv area.

Fixes: 706eeae60757 ("net/cnxk: add multi-segment Rx for CN10K")
cc: stable@dpdk.org

Signed-off-by: Nithin Dabilpuram <ndabilpuram@marvell.com>
---
 drivers/net/cnxk/cn10k_rx.h    | 4 +++-
 drivers/net/cnxk/cnxk_ethdev.c | 2 +-
 2 files changed, 4 insertions(+), 2 deletions(-)
diff mbox series

Patch

diff --git a/drivers/net/cnxk/cn10k_rx.h b/drivers/net/cnxk/cn10k_rx.h
index 46488d442e..cf390a0361 100644
--- a/drivers/net/cnxk/cn10k_rx.h
+++ b/drivers/net/cnxk/cn10k_rx.h
@@ -682,6 +682,7 @@  nix_cqe_xtract_mseg(const union nix_rx_parse_u *rx, struct rte_mbuf *mbuf,
 		    uint64_t rearm, const uint16_t flags)
 {
 	const rte_iova_t *iova_list;
+	uint16_t later_skip = 0;
 	struct rte_mbuf *head;
 	const rte_iova_t *eol;
 	uint8_t nb_segs;
@@ -720,10 +721,11 @@  nix_cqe_xtract_mseg(const union nix_rx_parse_u *rx, struct rte_mbuf *mbuf,
 	nb_segs--;
 
 	rearm = rearm & ~0xFFFF;
+	later_skip = (uintptr_t)mbuf->buf_addr - (uintptr_t)mbuf;
 
 	head = mbuf;
 	while (nb_segs) {
-		mbuf->next = ((struct rte_mbuf *)*iova_list) - 1;
+		mbuf->next = (struct rte_mbuf *)(*iova_list - later_skip);
 		mbuf = mbuf->next;
 
 		RTE_MEMPOOL_CHECK_COOKIES(mbuf->pool, (void **)&mbuf, 1, 1);
diff --git a/drivers/net/cnxk/cnxk_ethdev.c b/drivers/net/cnxk/cnxk_ethdev.c
index 2cb48ba152..8fe996b2d9 100644
--- a/drivers/net/cnxk/cnxk_ethdev.c
+++ b/drivers/net/cnxk/cnxk_ethdev.c
@@ -620,7 +620,7 @@  cnxk_nix_rx_queue_setup(struct rte_eth_dev *eth_dev, uint16_t qid,
 	first_skip += RTE_PKTMBUF_HEADROOM;
 	first_skip += rte_pktmbuf_priv_size(mp);
 	rq->first_skip = first_skip;
-	rq->later_skip = sizeof(struct rte_mbuf);
+	rq->later_skip = sizeof(struct rte_mbuf) + rte_pktmbuf_priv_size(mp);
 	rq->lpb_size = mp->elt_size;
 	if (roc_errata_nix_no_meta_aura())
 		rq->lpb_drop_ena = !(dev->rx_offloads & RTE_ETH_RX_OFFLOAD_SECURITY);