[PATCH v2] event/cnxk: fix incorrect mbuf offset calculation

[pbhagavatula at marvell.com]

From: Pavan Nikhilesh <pbhagavatula at marvell.com>

Fix incorrect mbuf offset calculation when HEADROOM exceeds 128B
while processing event vectors.

Fixes: 7fbbc981d54f("event/cnxk: support vectorized Rx event fast path")

Signed-off-by: Pavan Nikhilesh <pbhagavatula at marvell.com>
---
 v2 Changes:
 - Remove internal Change-Id.

 drivers/net/cnxk/cn10k_rx.h | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/drivers/net/cnxk/cn10k_rx.h b/drivers/net/cnxk/cn10k_rx.h
index 46488d442e..f562a75245 100644
--- a/drivers/net/cnxk/cn10k_rx.h
+++ b/drivers/net/cnxk/cn10k_rx.h
@@ -1201,9 +1201,11 @@ cn10k_nix_recv_pkts_vector(void *args, struct rte_mbuf **mbufs, uint16_t pkts,
 			mbuf23 = vqsubq_u64(mbuf23, data_off);
 		} else {
 			mbuf01 =
-				vsubq_u64(vld1q_u64((uint64_t *)cq0), data_off);
-			mbuf23 = vsubq_u64(vld1q_u64((uint64_t *)(cq0 + 16)),
-					   data_off);
+				vsubq_u64(vld1q_u64((uint64_t *)cq0),
+					  vdupq_n_u64(sizeof(struct rte_mbuf)));
+			mbuf23 =
+				vsubq_u64(vld1q_u64((uint64_t *)(cq0 + 16)),
+					  vdupq_n_u64(sizeof(struct rte_mbuf)));
 		}

 		/* Move mbufs to scalar registers for future use */
--
2.25.1