git: cc489c17d2ac - stable/14 - ena: Trigger reset when mbuf is NULL error happens

The branch stable/14 has been updated by osamaabb:

URL: https://cgit.FreeBSD.org/src/commit/?id=cc489c17d2ac7b0a18b5dac8ed31d2fa2d7a06ed

commit cc489c17d2ac7b0a18b5dac8ed31d2fa2d7a06ed
Author:     Osama Abboud <osamaabb@amazon.com>
AuthorDate: 2024-08-07 06:24:20 +0000
Commit:     Osama Abboud <osamaabb@FreeBSD.org>
CommitDate: 2024-10-31 14:54:11 +0000

    ena: Trigger reset when mbuf is NULL error happens
    
    The mbuf is NULL issue happens when the device sends the driver
    a completion with a wrong request id.
    Trigger a reset whenever this happens.
    
    Approved by: cperciva (mentor)
    Sponsored by: Amazon, Inc.
    
    (cherry picked from commit da73e3a7d08c215a5d8530fea9a9730f8ac3709f)
---
 sys/dev/ena/ena_datapath.c | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/sys/dev/ena/ena_datapath.c b/sys/dev/ena/ena_datapath.c
index 20864d0d2df6..ab082fa1810f 100644
--- a/sys/dev/ena/ena_datapath.c
+++ b/sys/dev/ena/ena_datapath.c
@@ -434,7 +434,9 @@ ena_rx_mbuf(struct ena_ring *rx_ring, struct ena_com_rx_buf_info *ena_bufs,
 	req_id = ena_bufs[buf].req_id;
 	rx_info = &rx_ring->rx_buffer_info[req_id];
 	if (unlikely(rx_info->mbuf == NULL)) {
-		ena_log(pdev, ERR, "NULL mbuf in rx_info");
+		ena_log(pdev, ERR, "NULL mbuf in rx_info. qid %u req_id %u\n",
+		    rx_ring->qid, req_id);
+		ena_trigger_reset(adapter, ENA_REGS_RESET_INV_RX_REQ_ID);
 		return (NULL);
 	}
 
@@ -476,7 +478,8 @@ ena_rx_mbuf(struct ena_ring *rx_ring, struct ena_com_rx_buf_info *ena_bufs,
 		rx_info = &rx_ring->rx_buffer_info[req_id];
 
 		if (unlikely(rx_info->mbuf == NULL)) {
-			ena_log(pdev, ERR, "NULL mbuf in rx_info");
+			ena_log(pdev, ERR, "NULL mbuf in rx_info. qid %u req_id %u\n",
+			    rx_ring->qid, req_id);
 			/*
 			 * If one of the required mbufs was not allocated yet,
 			 * we can break there.
@@ -488,6 +491,7 @@ ena_rx_mbuf(struct ena_ring *rx_ring, struct ena_com_rx_buf_info *ena_bufs,
 			 * with hw ring.
 			 */
 			m_freem(mbuf);
+			ena_trigger_reset(adapter, ENA_REGS_RESET_INV_RX_REQ_ID);
 			return (NULL);
 		}