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authorAlexander Duyck <aduyck@mirantis.com>2016-05-02 19:38:24 +0300
committerDavid S. Miller <davem@davemloft.net>2016-05-04 20:32:27 +0300
commitb1dc497b28ad053d1f6d5b5cb186af9564e4d7f1 (patch)
tree3bac79c9ae7ede9897b691687ef9bf21791c274e
parent36c983824b6f17b93258153ff5b05c33c34e44ba (diff)
downloadlinux-b1dc497b28ad053d1f6d5b5cb186af9564e4d7f1.tar.xz
net: Fix netdev_fix_features so that TSO_MANGLEID is only available with TSO
This change makes it so that we will strip the TSO_MANGLEID bit if TSO is not present. This way we will also handle ECN correctly of TSO is not present. Signed-off-by: Alexander Duyck <aduyck@mirantis.com> Signed-off-by: David S. Miller <davem@davemloft.net>
-rw-r--r--net/core/dev.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/net/core/dev.c b/net/core/dev.c
index 673d1f118bfb..e98ba63fe280 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -6721,6 +6721,10 @@ static netdev_features_t netdev_fix_features(struct net_device *dev,
features &= ~NETIF_F_TSO6;
}
+ /* TSO with IPv4 ID mangling requires IPv4 TSO be enabled */
+ if ((features & NETIF_F_TSO_MANGLEID) && !(features & NETIF_F_TSO))
+ features &= ~NETIF_F_TSO_MANGLEID;
+
/* TSO ECN requires that TSO is present as well. */
if ((features & NETIF_F_ALL_TSO) == NETIF_F_TSO_ECN)
features &= ~NETIF_F_TSO_ECN;