atl1e: limit gso segment size to prevent generation of wrong ip length fields

[ Upstream commit 31d1670e73f4911fe401273a8f576edc9c2b5fea ]

The limit of 0x3c00 is taken from the windows driver.

Suggested-by: Huang, Xiong <xiong@qca.qualcomm.com>
Cc: Huang, Xiong <xiong@qca.qualcomm.com>
Cc: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/net/ethernet/atheros/atl1e/atl1e.h b/drivers/net/ethernet/atheros/atl1e/atl1e.h
index edfdf6b950e73ad82f8c1e3749a973c113237bb7..b5fd934585e9f9f14595f60a2ec2e069cd2bed35 100644 (file)
--- a/drivers/net/ethernet/atheros/atl1e/atl1e.h
+++ b/drivers/net/ethernet/atheros/atl1e/atl1e.h
@@ -186,7 +186,7 @@ struct atl1e_tpd_desc {
 /* how about 0x2000 */
 #define MAX_TX_BUF_LEN      0x2000
 #define MAX_TX_BUF_SHIFT    13
-/*#define MAX_TX_BUF_LEN  0x3000 */
+#define MAX_TSO_SEG_SIZE    0x3c00
 
 /* rrs word 1 bit 0:31 */
 #define RRS_RX_CSUM_MASK       0xFFFF

diff --git a/drivers/net/ethernet/atheros/atl1e/atl1e_main.c b/drivers/net/ethernet/atheros/atl1e/atl1e_main.c
index 35faab799637e7160ba0a0c9a65abce644651e66..ca33b28ad47254ec9df56822658b3dde60fb8a3f 100644 (file)
--- a/drivers/net/ethernet/atheros/atl1e/atl1e_main.c
+++ b/drivers/net/ethernet/atheros/atl1e/atl1e_main.c
@@ -2332,6 +2332,7 @@ static int atl1e_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 
        INIT_WORK(&adapter->reset_task, atl1e_reset_task);
        INIT_WORK(&adapter->link_chg_task, atl1e_link_chg_task);
+       netif_set_gso_max_size(netdev, MAX_TSO_SEG_SIZE);
        err = register_netdev(netdev);
        if (err) {
                netdev_err(netdev, "register netdevice failed\n");