[dpdk-dev] [PATCH 2/6] net/bnxt: restore vlan filters during reset recovery

[Kalesh A P]

From: Kalesh AP <kalesh-anakkur.pura...@broadcom.com>

Older Firmware could have state information such as
MAC Filters, VLAN settings etc configured by user.
But new Firmware is unaware of this state information
and as a result driver should restore these settings
during reset recovery.

This patch restores the user configured vlan settings
prior to hot FW upgrade or FW error.

Signed-off-by: Kalesh AP <kalesh-anakkur.pura...@broadcom.com>
Reviewed-by: Ajit Kumar Khaparde <ajit.khapa...@broadcom.com>
---
 drivers/net/bnxt/bnxt_ethdev.c | 27 +++++++++++++++++++++++++++
 1 file changed, 27 insertions(+)

diff --git a/drivers/net/bnxt/bnxt_ethdev.c b/drivers/net/bnxt/bnxt_ethdev.c
index addc850..d72a756 100644
--- a/drivers/net/bnxt/bnxt_ethdev.c
+++ b/drivers/net/bnxt/bnxt_ethdev.c
@@ -3796,6 +3796,29 @@ static void bnxt_dev_cleanup(struct bnxt *bp)
        bnxt_uninit_resources(bp, true);
 }
 
+static int bnxt_restore_vlan_filters(struct bnxt *bp)
+{
+       struct rte_eth_dev *dev = bp->eth_dev;
+       struct rte_vlan_filter_conf *vfc;
+       int vidx, vbit, rc;
+       uint16_t vlan_id;
+
+       for (vlan_id = 1; vlan_id <= RTE_ETHER_MAX_VLAN_ID; vlan_id++) {
+               vfc = &dev->data->vlan_filter_conf;
+               vidx = vlan_id / 64;
+               vbit = vlan_id % 64;
+
+               /* Each bit corresponds to a VLAN id */
+               if (vfc->ids[vidx] & (UINT64_C(1) << vbit)) {
+                       rc = bnxt_add_vlan_filter(bp, vlan_id);
+                       if (rc)
+                               return rc;
+               }
+       }
+
+       return 0;
+}
+
 static int bnxt_restore_mac_filters(struct bnxt *bp)
 {
        struct rte_eth_dev *dev = bp->eth_dev;
@@ -3849,6 +3872,10 @@ static int bnxt_restore_filters(struct bnxt *bp)
                ret = bnxt_promiscuous_enable_op(dev);
 
        ret = bnxt_restore_mac_filters(bp);
+       if (ret)
+               return ret;
+
+       ret = bnxt_restore_vlan_filters(bp);
        /* TODO restore other filters as well */
        return ret;
 }
-- 
2.10.1