diff options
| -rw-r--r-- | drivers/net/gtp.c | 11 |
1 files changed, 6 insertions, 5 deletions
diff --git a/drivers/net/gtp.c b/drivers/net/gtp.c index 4c04e271f184..5a048f050a9c 100644 --- a/drivers/net/gtp.c +++ b/drivers/net/gtp.c @@ -612,11 +612,16 @@ static const struct net_device_ops gtp_netdev_ops = { static void gtp_link_setup(struct net_device *dev) { + unsigned int max_gtp_header_len = sizeof(struct iphdr) + + sizeof(struct udphdr) + + sizeof(struct gtp0_header); + dev->netdev_ops = >p_netdev_ops; dev->needs_free_netdev = true; dev->hard_header_len = 0; dev->addr_len = 0; + dev->mtu = ETH_DATA_LEN - max_gtp_header_len; /* Zero header length. */ dev->type = ARPHRD_NONE; @@ -626,11 +631,7 @@ static void gtp_link_setup(struct net_device *dev) dev->features |= NETIF_F_LLTX; netif_keep_dst(dev); - /* Assume largest header, ie. GTPv0. */ - dev->needed_headroom = LL_MAX_HEADER + - sizeof(struct iphdr) + - sizeof(struct udphdr) + - sizeof(struct gtp0_header); + dev->needed_headroom = LL_MAX_HEADER + max_gtp_header_len; } static int gtp_hashtable_new(struct gtp_dev *gtp, int hsize); |