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Commit 0345e186 authored by Michał Mirosław's avatar Michał Mirosław Committed by David S. Miller
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net: verify GSO flag bits against netdev features 



Signed-off-by: default avatarMichał Mirosław <mirq-linux@rere.qmqm.pl>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 3ad9b358

include/linux/netdevice.h

+9 −0
Original line number Diff line number Diff line
@@ -2492,6 +2492,15 @@ netdev_features_t netif_skb_features(struct sk_buff *skb); 
static inline int net_gso_ok(netdev_features_t features, int gso_type)

{

	netdev_features_t feature = gso_type << NETIF_F_GSO_SHIFT;



	/* check flags correspondence */

	BUILD_BUG_ON(SKB_GSO_TCPV4   != (NETIF_F_TSO >> NETIF_F_GSO_SHIFT));

	BUILD_BUG_ON(SKB_GSO_UDP     != (NETIF_F_UFO >> NETIF_F_GSO_SHIFT));

	BUILD_BUG_ON(SKB_GSO_DODGY   != (NETIF_F_GSO_ROBUST >> NETIF_F_GSO_SHIFT));

	BUILD_BUG_ON(SKB_GSO_TCP_ECN != (NETIF_F_TSO_ECN >> NETIF_F_GSO_SHIFT));

	BUILD_BUG_ON(SKB_GSO_TCPV6   != (NETIF_F_TSO6 >> NETIF_F_GSO_SHIFT));

	BUILD_BUG_ON(SKB_GSO_FCOE    != (NETIF_F_FSO >> NETIF_F_GSO_SHIFT));



	return (features & feature) == feature;

}