pve-edge-kernel/patches/intel/igb/igb_4.10_max-mtu.patch

diff --git a/src/e1000_defines.h b/src/e1000_defines.h
index 6de3988..d58e12f 100644
--- a/src/e1000_defines.h
+++ b/src/e1000_defines.h
@@ -423,7 +423,8 @@
 #define ETHERNET_IEEE_VLAN_TYPE		0x8100  /* 802.3ac packet */
 
 #define ETHERNET_FCS_SIZE		4
-#define MAX_JUMBO_FRAME_SIZE		0x3F00
+#define MAX_JUMBO_FRAME_SIZE		0x2600
+#define MAX_STD_JUMBO_FRAME_SIZE	9216
 /* The datasheet maximum supported RX size is 9.5KB (9728 bytes) */
 #define MAX_RX_JUMBO_FRAME_SIZE		0x2600
 #define E1000_TX_PTR_GAP		0x1F
diff --git a/src/igb_main.c b/src/igb_main.c
index 2dff0f4..bbfe87e 100644
--- a/src/igb_main.c
+++ b/src/igb_main.c
@@ -2852,6 +2852,10 @@ static int igb_probe(struct pci_dev *pdev,
 	if (pci_using_dac)
 		netdev->features |= NETIF_F_HIGHDMA;
 
+	/* MTU range: 68 - 9216 */
+	netdev->min_mtu = ETH_MIN_MTU;
+	netdev->max_mtu = MAX_STD_JUMBO_FRAME_SIZE;
+
 	adapter->en_mng_pt = e1000_enable_mng_pass_thru(hw);
 #ifdef DEBUG
 	if (adapter->dmac != IGB_DMAC_DISABLE)
@@ -5832,17 +5836,6 @@ static int igb_change_mtu(struct net_device *netdev, int new_mtu)
 	struct pci_dev *pdev = adapter->pdev;
 	int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN;
 
-	if ((new_mtu < 68) || (max_frame > MAX_JUMBO_FRAME_SIZE)) {
-		dev_err(pci_dev_to_dev(pdev), "Invalid MTU setting\n");
-		return -EINVAL;
-	}
-
-#define MAX_STD_JUMBO_FRAME_SIZE 9238
-	if (max_frame > MAX_STD_JUMBO_FRAME_SIZE) {
-		dev_err(pci_dev_to_dev(pdev), "MTU > 9216 not supported.\n");
-		return -EINVAL;
-	}
-
 	/* adjust max frame to be at least the size of a standard frame */
 	if (max_frame < (ETH_FRAME_LEN + ETH_FCS_LEN))
 		max_frame = ETH_FRAME_LEN + ETH_FCS_LEN;