diff mbox series

[v3,12/18] net/bnxt: set allmulti mode if multicast filter fails

Message ID 20231227042119.72469-13-ajit.khaparde@broadcom.com (mailing list archive)
State Accepted, archived
Delegated to: Ajit Khaparde
Headers
Series bnxt patchset |

Checks

Context Check Description
ci/checkpatch success coding style OK

Commit Message

Ajit Khaparde Dec. 27, 2023, 4:21 a.m. UTC 
Fallback to all multicast mode if FW rejects multicast filter
programming.

The firmware can reject the MC filter programming request if
it is running low in resources when there is a large number of functions.
The driver must be prepared to fallback to the all-multicast mode
if the original MC filter programming request is rejected.

Signed-off-by: Ajit Khaparde <ajit.khaparde@broadcom.com>
Reviewed-by: Damodharam Ammepalli <damodharam.ammepalli@broadcom.com>
---
 drivers/net/bnxt/bnxt_ethdev.c | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/drivers/net/bnxt/bnxt_ethdev.c b/drivers/net/bnxt/bnxt_ethdev.c
index 5b775e7716..7aed6d3ab6 100644
--- a/drivers/net/bnxt/bnxt_ethdev.c
+++ b/drivers/net/bnxt/bnxt_ethdev.c
@@ -2947,7 +2947,17 @@  bnxt_dev_set_mc_addr_list_op(struct rte_eth_dev *eth_dev,
 		vnic->flags &= ~BNXT_VNIC_INFO_MCAST;
 
 allmulti:
-	return bnxt_hwrm_cfa_l2_set_rx_mask(bp, vnic, 0, NULL);
+	rc = bnxt_hwrm_cfa_l2_set_rx_mask(bp, vnic, 0, NULL);
+	if (rc == -ENOSPC && (vnic->flags & BNXT_VNIC_INFO_MCAST)) {
+		/* If MCAST addition failed because FW ran out of
+		 * multicast filters, enable all multicast mode.
+		 */
+		vnic->flags &= ~BNXT_VNIC_INFO_MCAST;
+		vnic->flags |= BNXT_VNIC_INFO_ALLMULTI;
+		goto allmulti;
+	}
+
+	return rc;
 }
 
 static int