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[NEIGH]: Convert neighbour dumping to new netlink api 

Signed-off-by: Thomas Graf <tgraf@suug.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Thomas Graf 2006-08-07 17:56:37 -07:00 committed by David S. Miller
parent 5208debd0f
commit 8b8aec5083
1 changed files with 51 additions and 55 deletions
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106
net/core/neighbour.c
View File

@ -1901,48 +1901,49 @@ out:
return skb->len;
}
static int neigh_fill_info(struct sk_buff *skb, struct neighbour *n,
u32 pid, u32 seq, int event, unsigned int flags)
static int neigh_fill_info(struct sk_buff *skb, struct neighbour *neigh,
u32 pid, u32 seq, int type, unsigned int flags)
{
unsigned long now = jiffies;
unsigned char *b = skb->tail;
struct nda_cacheinfo ci;
int locked = 0;
u32 probes;
struct nlmsghdr *nlh = NLMSG_NEW(skb, pid, seq, event,
sizeof(struct ndmsg), flags);
struct ndmsg *ndm = NLMSG_DATA(nlh);
struct nlmsghdr *nlh;
struct ndmsg *ndm;
ndm->ndm_family = n->ops->family;
nlh = nlmsg_put(skb, pid, seq, type, sizeof(*ndm), flags);
if (nlh == NULL)
return -ENOBUFS;
ndm = nlmsg_data(nlh);
ndm->ndm_family = neigh->ops->family;
ndm->ndm_pad1 = 0;
ndm->ndm_pad2 = 0;
ndm->ndm_flags = n->flags;
ndm->ndm_type = n->type;
ndm->ndm_ifindex = n->dev->ifindex;
RTA_PUT(skb, NDA_DST, n->tbl->key_len, n->primary_key);
read_lock_bh(&n->lock);
locked = 1;
ndm->ndm_state = n->nud_state;
if (n->nud_state & NUD_VALID)
RTA_PUT(skb, NDA_LLADDR, n->dev->addr_len, n->ha);
ci.ndm_used = now - n->used;
ci.ndm_confirmed = now - n->confirmed;
ci.ndm_updated = now - n->updated;
ci.ndm_refcnt = atomic_read(&n->refcnt) - 1;
probes = atomic_read(&n->probes);
read_unlock_bh(&n->lock);
locked = 0;
RTA_PUT(skb, NDA_CACHEINFO, sizeof(ci), &ci);
RTA_PUT(skb, NDA_PROBES, sizeof(probes), &probes);
nlh->nlmsg_len = skb->tail - b;
return skb->len;
ndm->ndm_flags = neigh->flags;
ndm->ndm_type = neigh->type;
ndm->ndm_ifindex = neigh->dev->ifindex;
nlmsg_failure:
rtattr_failure:
if (locked)
read_unlock_bh(&n->lock);
skb_trim(skb, b - skb->data);
return -1;
NLA_PUT(skb, NDA_DST, neigh->tbl->key_len, neigh->primary_key);
read_lock_bh(&neigh->lock);
ndm->ndm_state = neigh->nud_state;
if ((neigh->nud_state & NUD_VALID) &&
nla_put(skb, NDA_LLADDR, neigh->dev->addr_len, neigh->ha) < 0) {
read_unlock_bh(&neigh->lock);
goto nla_put_failure;
}
ci.ndm_used = now - neigh->used;
ci.ndm_confirmed = now - neigh->confirmed;
ci.ndm_updated = now - neigh->updated;
ci.ndm_refcnt = atomic_read(&neigh->refcnt) - 1;
read_unlock_bh(&neigh->lock);
NLA_PUT_U32(skb, NDA_PROBES, atomic_read(&neigh->probes));
NLA_PUT(skb, NDA_CACHEINFO, sizeof(ci), &ci);
return nlmsg_end(skb, nlh);
nla_put_failure:
return nlmsg_cancel(skb, nlh);
}
@ -1986,7 +1987,7 @@ int neigh_dump_info(struct sk_buff *skb, struct netlink_callback *cb)
int t, family, s_t;
read_lock(&neigh_tbl_lock);
family = ((struct rtgenmsg *)NLMSG_DATA(cb->nlh))->rtgen_family;
family = ((struct rtgenmsg *) nlmsg_data(cb->nlh))->rtgen_family;
s_t = cb->args[0];
for (tbl = neigh_tables, t = 0; tbl; tbl = tbl->next, t++) {
@ -2367,39 +2368,34 @@ static struct file_operations neigh_stat_seq_fops = {
#ifdef CONFIG_ARPD
void neigh_app_ns(struct neighbour *n)
{
struct nlmsghdr *nlh;
int size = NLMSG_SPACE(sizeof(struct ndmsg) + 256);
struct sk_buff *skb = alloc_skb(size, GFP_ATOMIC);
struct sk_buff *skb;
if (!skb)
skb = nlmsg_new(NLMSG_GOODSIZE, GFP_ATOMIC);
if (skb == NULL)
return;
if (neigh_fill_info(skb, n, 0, 0, RTM_GETNEIGH, 0) < 0) {
if (neigh_fill_info(skb, n, 0, 0, RTM_GETNEIGH, NLM_F_REQUEST) <= 0)
kfree_skb(skb);
return;
else {
NETLINK_CB(skb).dst_group = RTNLGRP_NEIGH;
netlink_broadcast(rtnl, skb, 0, RTNLGRP_NEIGH, GFP_ATOMIC);
}
nlh = (struct nlmsghdr *)skb->data;
nlh->nlmsg_flags = NLM_F_REQUEST;
NETLINK_CB(skb).dst_group = RTNLGRP_NEIGH;
netlink_broadcast(rtnl, skb, 0, RTNLGRP_NEIGH, GFP_ATOMIC);
}
static void neigh_app_notify(struct neighbour *n)
{
struct nlmsghdr *nlh;
int size = NLMSG_SPACE(sizeof(struct ndmsg) + 256);
struct sk_buff *skb = alloc_skb(size, GFP_ATOMIC);
struct sk_buff *skb;
if (!skb)
skb = nlmsg_new(NLMSG_GOODSIZE, GFP_ATOMIC);
if (skb == NULL)
return;
if (neigh_fill_info(skb, n, 0, 0, RTM_NEWNEIGH, 0) < 0) {
if (neigh_fill_info(skb, n, 0, 0, RTM_NEWNEIGH, 0) <= 0)
kfree_skb(skb);
return;
else {
NETLINK_CB(skb).dst_group = RTNLGRP_NEIGH;
netlink_broadcast(rtnl, skb, 0, RTNLGRP_NEIGH, GFP_ATOMIC);
}
nlh = (struct nlmsghdr *)skb->data;
NETLINK_CB(skb).dst_group = RTNLGRP_NEIGH;
netlink_broadcast(rtnl, skb, 0, RTNLGRP_NEIGH, GFP_ATOMIC);
}
#endif /* CONFIG_ARPD */