diff options
| author |   Eric Dumazet <edumazet@google.com> | 2016-04-09 11:29:58 -0700 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2016-04-14 00:37:08 -0400 |
| commit | 743b03a83297690f0bd38c452a3bbb47d2be300a (patch) | |
| tree | fa679fafc020f8a3e46a418d876d7ce523da0d3d | |
| parent | qdisc: constify meta_type_ops structures (diff) | |
| download | linux-dev-743b03a83297690f0bd38c452a3bbb47d2be300a.tar.xz linux-dev-743b03a83297690f0bd38c452a3bbb47d2be300a.zip | |
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>
| -rw-r--r-- | include/linux/netdevice.h | 4 | ||||
| -rw-r--r-- | net/core/dev.c | 3 |
2 files changed, 2 insertions, 5 deletions
diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h index e906c6570b38..9884fe9a6552 100644 --- a/include/linux/netdevice.h +++ b/include/linux/netdevice.h @@ -1586,8 +1586,6 @@ enum netdev_priv_flags { * @gso_max_size: Maximum size of generic segmentation offload * @gso_max_segs: Maximum number of segments that can be passed to the * NIC for GSO - * @gso_min_segs: Minimum number of segments that can be passed to the - * NIC for GSO * * @dcbnl_ops: Data Center Bridging netlink ops * @num_tc: Number of traffic classes in the net device @@ -1858,7 +1856,7 @@ struct net_device { unsigned int gso_max_size; #define GSO_MAX_SEGS 65535 u16 gso_max_segs; - u16 gso_min_segs; + #ifdef CONFIG_DCB const struct dcbnl_rtnl_ops *dcbnl_ops; #endif diff --git a/net/core/dev.c b/net/core/dev.c index d51343a821ed..09fb1ace9dc8 100644 --- a/net/core/dev.c +++ b/net/core/dev.c @@ -2831,7 +2831,7 @@ netdev_features_t netif_skb_features(struct sk_buff *skb) netdev_features_t features = dev->features; u16 gso_segs = skb_shinfo(skb)->gso_segs; - if (gso_segs > dev->gso_max_segs || gso_segs < dev->gso_min_segs) + if (gso_segs > dev->gso_max_segs) features &= ~NETIF_F_GSO_MASK; /* If encapsulation offload request, verify we are testing @@ -7429,7 +7429,6 @@ struct net_device *alloc_netdev_mqs(int sizeof_priv, const char *name, dev->gso_max_size = GSO_MAX_SIZE; dev->gso_max_segs = GSO_MAX_SEGS; - dev->gso_min_segs = 0; INIT_LIST_HEAD(&dev->napi_list); INIT_LIST_HEAD(&dev->unreg_list); |