From cc489c17d2ac7b0a18b5dac8ed31d2fa2d7a06ed Mon Sep 17 00:00:00 2001 From: Osama Abboud Date: Wed, 7 Aug 2024 06:24:20 +0000 Subject: [PATCH] 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 20864d0d2df..ab082fa1810 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); }