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neigh: Kill hh_cache->hh_output 

It's just taking on one of two possible values, either
neigh_ops->output or dev_queue_xmit().  And this is purely depending
upon whether nud_state has NUD_CONNECTED set or not.

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller 2011-07-16 17:45:02 -07:00
parent 47ec132a40
commit b23b5455b6
4 changed files with 7 additions and 29 deletions
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1
include/linux/netdevice.h
View File

@ -254,7 +254,6 @@ struct netdev_hw_addr_list {
struct hh_cache {
u16 hh_len;
u16 __pad;
int (*hh_output)(struct sk_buff *skb);
seqlock_t hh_lock;
/* cached hardware header; allow for machine alignment needs. */

4
include/net/neighbour.h
View File

@ -340,13 +340,13 @@ static inline int neigh_hh_output(struct hh_cache *hh, struct sk_buff *skb)
} while (read_seqretry(&hh->hh_lock, seq));
skb_push(skb, hh_len);
return hh->hh_output(skb);
return dev_queue_xmit(skb);
}
static inline int neigh_output(struct neighbour *n, struct sk_buff *skb)
{
struct hh_cache *hh = &n->hh;
if (hh->hh_len)
if ((n->nud_state & NUD_CONNECTED) && hh->hh_len)
return neigh_hh_output(hh, skb);
else
return n->output(skb);

25
net/core/neighbour.c
View File

@ -720,15 +720,9 @@ EXPORT_SYMBOL(neigh_destroy);
*/
static void neigh_suspect(struct neighbour *neigh)
{
struct hh_cache *hh;
NEIGH_PRINTK2("neigh %p is suspected.\n", neigh);
neigh->output = neigh->ops->output;
hh = &neigh->hh;
if (hh->hh_len)
hh->hh_output = neigh->ops->output;
}
/* Neighbour state is OK;
@ -738,15 +732,9 @@ static void neigh_suspect(struct neighbour *neigh)
*/
static void neigh_connect(struct neighbour *neigh)
{
struct hh_cache *hh;
NEIGH_PRINTK2("neigh %p is connected.\n", neigh);
neigh->output = neigh->ops->connected_output;
hh = &neigh->hh;
if (hh->hh_len)
hh->hh_output = dev_queue_xmit;
}
static void neigh_periodic_work(struct work_struct *work)
@ -1215,18 +1203,9 @@ static void neigh_hh_init(struct neighbour *n, struct dst_entry *dst)
/* Only one thread can come in here and initialize the
* hh_cache entry.
*/
if (hh->hh_len)
goto end;
if (!hh->hh_len)
dev->header_ops->cache(n, hh, prot);
if (dev->header_ops->cache(n, hh, prot))
goto end;
if (n->nud_state & NUD_CONNECTED)
hh->hh_output = dev_queue_xmit;
else
hh->hh_output = n->ops->output;
end:
write_unlock_bh(&n->lock);
}

6
net/ipv4/route.c
View File

@ -427,9 +427,9 @@ static int rt_cache_seq_show(struct seq_file *seq, void *v)
dst_metric(&r->dst, RTAX_RTTVAR)),
r->rt_key_tos,
-1,
(r->dst.neighbour ?
(r->dst.neighbour->hh.hh_output ==
dev_queue_xmit) : 0),
(r->dst.neighbour &&
(r->dst.neighbour->nud_state & NUD_CONNECTED)) ?
1 : 0,
r->rt_spec_dst, &len);
seq_printf(seq, "%*s\n", 127 - len, "");