diff options
| author | J. Bruce Fields <bfields@redhat.com> | 2012-10-09 22:35:22 (GMT) |
|---|---|---|
| committer | J. Bruce Fields <bfields@redhat.com> | 2012-10-09 22:35:22 (GMT) |
| commit | f474af7051212b4efc8267583fad9c4ebf33ccff (patch) | |
| tree | 1aa46ebc8065a341f247c2a2d9af2f624ad1d4f8 /include/net/neighbour.h | |
| parent | 0d22f68f02c10d5d10ec5712917e5828b001a822 (diff) | |
| parent | e3dd9a52cb5552c46c2a4ca7ccdfb4dab5c72457 (diff) | |
| download | linux-f474af7051212b4efc8267583fad9c4ebf33ccff.tar.xz | |
nfs: disintegrate UAPI for nfs
This is to complete part of the Userspace API (UAPI) disintegration for which
the preparatory patches were pulled recently. After these patches, userspace
headers will be segregated into:
include/uapi/linux/.../foo.h
for the userspace interface stuff, and:
include/linux/.../foo.h
for the strictly kernel internal stuff.
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
Diffstat (limited to 'include/net/neighbour.h')
| -rw-r--r-- | include/net/neighbour.h | 14 |
1 files changed, 9 insertions, 5 deletions
diff --git a/include/net/neighbour.h b/include/net/neighbour.h index 344d898..0dab173 100644 --- a/include/net/neighbour.h +++ b/include/net/neighbour.h @@ -334,18 +334,22 @@ static inline int neigh_hh_bridge(struct hh_cache *hh, struct sk_buff *skb) } #endif -static inline int neigh_hh_output(struct hh_cache *hh, struct sk_buff *skb) +static inline int neigh_hh_output(const struct hh_cache *hh, struct sk_buff *skb) { unsigned int seq; int hh_len; do { - int hh_alen; - seq = read_seqbegin(&hh->hh_lock); hh_len = hh->hh_len; - hh_alen = HH_DATA_ALIGN(hh_len); - memcpy(skb->data - hh_alen, hh->hh_data, hh_alen); + if (likely(hh_len <= HH_DATA_MOD)) { + /* this is inlined by gcc */ + memcpy(skb->data - HH_DATA_MOD, hh->hh_data, HH_DATA_MOD); + } else { + int hh_alen = HH_DATA_ALIGN(hh_len); + + memcpy(skb->data - hh_alen, hh->hh_data, hh_alen); + } } while (read_seqretry(&hh->hh_lock, seq)); skb_push(skb, hh_len); |