1 files changed, 30 insertions, 0 deletions

diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt_vfr.c b/drivers/net/ethernet/broadcom/bnxt/bnxt_vfr.c
index 26290403f38f..38f635cf8408 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt_vfr.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_vfr.c
@@ -64,6 +64,31 @@ static int hwrm_cfa_vfr_free(struct bnxt *bp, u16 vf_idx)
         return rc;
 }
 
+static int bnxt_hwrm_vfr_qcfg(struct bnxt *bp, struct bnxt_vf_rep *vf_rep,
+                              u16 *max_mtu)
+{
+        struct hwrm_func_qcfg_output *resp = bp->hwrm_cmd_resp_addr;
+        struct hwrm_func_qcfg_input req = {0};
+        u16 mtu;
+        int rc;
+
+        bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_FUNC_QCFG, -1, -1);
+        req.fid = cpu_to_le16(bp->pf.vf[vf_rep->vf_idx].fw_fid);
+
+        mutex_lock(&bp->hwrm_cmd_lock);
+
+        rc = _hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
+        if (!rc) {
+                mtu = le16_to_cpu(resp->max_mtu_configured);
+                if (!mtu)
+                        *max_mtu = BNXT_MAX_MTU;
+                else
+                        *max_mtu = mtu;
+        }
+        mutex_unlock(&bp->hwrm_cmd_lock);
+        return rc;
+}
+
 static int bnxt_vf_rep_open(struct net_device *dev)
 {
         struct bnxt_vf_rep *vf_rep = netdev_priv(dev);
@@ -365,6 +390,7 @@ static void bnxt_vf_rep_netdev_init(struct bnxt *bp, struct bnxt_vf_rep *vf_rep,
                                     struct net_device *dev)
 {
         struct net_device *pf_dev = bp->dev;
+        u16 max_mtu;
 
         dev->netdev_ops = &bnxt_vf_rep_netdev_ops;
         dev->ethtool_ops = &bnxt_vf_rep_ethtool_ops;
@@ -380,6 +406,10 @@ static void bnxt_vf_rep_netdev_init(struct bnxt *bp, struct bnxt_vf_rep *vf_rep,
         bnxt_vf_rep_eth_addr_gen(bp->pf.mac_addr, vf_rep->vf_idx,
                                  dev->perm_addr);
         ether_addr_copy(dev->dev_addr, dev->perm_addr);
+        /* Set VF-Rep's max-mtu to the corresponding VF's max-mtu */
+        if (!bnxt_hwrm_vfr_qcfg(bp, vf_rep, &max_mtu))
+                dev->max_mtu = max_mtu;
+        dev->min_mtu = ETH_ZLEN;
 }
 
 static int bnxt_pcie_dsn_get(struct bnxt *bp, u8 dsn[])