[14/18] net/bnxt: fix ring teardown
Checks
Commit Message
From: Ajit Khaparde <ajit.khaparde@broadcom.com>
Check for valid bit while scanning for hwrm_done completion
during ring teardown. Not checking the valid bit could cause a
ring overflow when we ring the doorbell.
Fixes: 4fb6ab3f866d ("net/bnxt: check flush status during ring free")
Cc: stable@dpdk.org
Signed-off-by: Ajit Khaparde <ajit.khaparde@broadcom.com>
Reviewed-by: Somnath Kotur <somnath.kotur@broadcom.com>
Reviewed-by: Kalesh AP <kalesh-anakkur.purayil@broadcom.com>
---
drivers/net/bnxt/bnxt_rxr.c | 3 +++
drivers/net/bnxt/bnxt_txr.c | 3 +++
2 files changed, 6 insertions(+)
@@ -1411,6 +1411,9 @@ int bnxt_flush_rx_cmp(struct bnxt_cp_ring_info *cpr)
cons = RING_CMP(cpr->cp_ring_struct, raw_cons);
rxcmp = (struct rx_pkt_cmpl *)&cpr->cp_desc_ring[cons];
+ if (!bnxt_cpr_cmp_valid(rxcmp, raw_cons, ring_mask + 1))
+ break;
+
if (CMP_TYPE(rxcmp) == CMPL_BASE_TYPE_HWRM_DONE)
return 1;
@@ -602,6 +602,9 @@ int bnxt_flush_tx_cmp(struct bnxt_cp_ring_info *cpr)
cons = RING_CMPL(ring_mask, raw_cons);
txcmp = (struct tx_cmpl *)&cp_desc_ring[cons];
+ if (!bnxt_cpr_cmp_valid(txcmp, raw_cons, ring_mask + 1))
+ break;
+
opaque = rte_cpu_to_le_32(txcmp->opaque);
raw_cons = NEXT_RAW_CMP(raw_cons);