mirror of https://gitee.com/openkylin/linux.git
net: remove netdevice gso_min_segs
After introduction of ndo_features_check(), we believe that very specific checks for rare features should not be done in core networking stack. No driver uses gso_min_segs yet, so we revert this feature and save few instructions per tx packet in fast path. Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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@ -1586,8 +1586,6 @@ enum netdev_priv_flags {
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* @gso_max_size: Maximum size of generic segmentation offload
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* @gso_max_segs: Maximum number of segments that can be passed to the
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* NIC for GSO
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* @gso_min_segs: Minimum number of segments that can be passed to the
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* NIC for GSO
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*
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* @dcbnl_ops: Data Center Bridging netlink ops
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* @num_tc: Number of traffic classes in the net device
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@ -1858,7 +1856,7 @@ struct net_device {
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unsigned int gso_max_size;
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#define GSO_MAX_SEGS 65535
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u16 gso_max_segs;
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u16 gso_min_segs;
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#ifdef CONFIG_DCB
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const struct dcbnl_rtnl_ops *dcbnl_ops;
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#endif
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@ -2831,7 +2831,7 @@ netdev_features_t netif_skb_features(struct sk_buff *skb)
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netdev_features_t features = dev->features;
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u16 gso_segs = skb_shinfo(skb)->gso_segs;
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if (gso_segs > dev->gso_max_segs || gso_segs < dev->gso_min_segs)
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if (gso_segs > dev->gso_max_segs)
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features &= ~NETIF_F_GSO_MASK;
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/* If encapsulation offload request, verify we are testing
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@ -7429,7 +7429,6 @@ struct net_device *alloc_netdev_mqs(int sizeof_priv, const char *name,
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dev->gso_max_size = GSO_MAX_SIZE;
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dev->gso_max_segs = GSO_MAX_SEGS;
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dev->gso_min_segs = 0;
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INIT_LIST_HEAD(&dev->napi_list);
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INIT_LIST_HEAD(&dev->unreg_list);
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