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[NEIGH]: Convert neighbour table dumping to new netlink api

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Also fixes skipping of already dumped neighbours.

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 18:00:18 -07:00 committed by David S. Miller
parent 6b3f8674bc
commit ca860fb39b
1 changed files with 73 additions and 66 deletions
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139
net/core/neighbour.c
View File

@ -1597,56 +1597,59 @@ out:
static int neightbl_fill_parms(struct sk_buff *skb, struct neigh_parms *parms)
{
struct rtattr *nest = NULL;
nest = RTA_NEST(skb, NDTA_PARMS);
struct nlattr *nest;
nest = nla_nest_start(skb, NDTA_PARMS);
if (nest == NULL)
return -ENOBUFS;
if (parms->dev)
RTA_PUT_U32(skb, NDTPA_IFINDEX, parms->dev->ifindex);
NLA_PUT_U32(skb, NDTPA_IFINDEX, parms->dev->ifindex);
RTA_PUT_U32(skb, NDTPA_REFCNT, atomic_read(&parms->refcnt));
RTA_PUT_U32(skb, NDTPA_QUEUE_LEN, parms->queue_len);
RTA_PUT_U32(skb, NDTPA_PROXY_QLEN, parms->proxy_qlen);
RTA_PUT_U32(skb, NDTPA_APP_PROBES, parms->app_probes);
RTA_PUT_U32(skb, NDTPA_UCAST_PROBES, parms->ucast_probes);
RTA_PUT_U32(skb, NDTPA_MCAST_PROBES, parms->mcast_probes);
RTA_PUT_MSECS(skb, NDTPA_REACHABLE_TIME, parms->reachable_time);
RTA_PUT_MSECS(skb, NDTPA_BASE_REACHABLE_TIME,
NLA_PUT_U32(skb, NDTPA_REFCNT, atomic_read(&parms->refcnt));
NLA_PUT_U32(skb, NDTPA_QUEUE_LEN, parms->queue_len);
NLA_PUT_U32(skb, NDTPA_PROXY_QLEN, parms->proxy_qlen);
NLA_PUT_U32(skb, NDTPA_APP_PROBES, parms->app_probes);
NLA_PUT_U32(skb, NDTPA_UCAST_PROBES, parms->ucast_probes);
NLA_PUT_U32(skb, NDTPA_MCAST_PROBES, parms->mcast_probes);
NLA_PUT_MSECS(skb, NDTPA_REACHABLE_TIME, parms->reachable_time);
NLA_PUT_MSECS(skb, NDTPA_BASE_REACHABLE_TIME,
parms->base_reachable_time);
RTA_PUT_MSECS(skb, NDTPA_GC_STALETIME, parms->gc_staletime);
RTA_PUT_MSECS(skb, NDTPA_DELAY_PROBE_TIME, parms->delay_probe_time);
RTA_PUT_MSECS(skb, NDTPA_RETRANS_TIME, parms->retrans_time);
RTA_PUT_MSECS(skb, NDTPA_ANYCAST_DELAY, parms->anycast_delay);
RTA_PUT_MSECS(skb, NDTPA_PROXY_DELAY, parms->proxy_delay);
RTA_PUT_MSECS(skb, NDTPA_LOCKTIME, parms->locktime);
NLA_PUT_MSECS(skb, NDTPA_GC_STALETIME, parms->gc_staletime);
NLA_PUT_MSECS(skb, NDTPA_DELAY_PROBE_TIME, parms->delay_probe_time);
NLA_PUT_MSECS(skb, NDTPA_RETRANS_TIME, parms->retrans_time);
NLA_PUT_MSECS(skb, NDTPA_ANYCAST_DELAY, parms->anycast_delay);
NLA_PUT_MSECS(skb, NDTPA_PROXY_DELAY, parms->proxy_delay);
NLA_PUT_MSECS(skb, NDTPA_LOCKTIME, parms->locktime);
return RTA_NEST_END(skb, nest);
return nla_nest_end(skb, nest);
rtattr_failure:
return RTA_NEST_CANCEL(skb, nest);
nla_put_failure:
return nla_nest_cancel(skb, nest);
}
static int neightbl_fill_info(struct neigh_table *tbl, struct sk_buff *skb,
struct netlink_callback *cb)
static int neightbl_fill_info(struct sk_buff *skb, struct neigh_table *tbl,
u32 pid, u32 seq, int type, int flags)
{
struct nlmsghdr *nlh;
struct ndtmsg *ndtmsg;
nlh = NLMSG_NEW_ANSWER(skb, cb, RTM_NEWNEIGHTBL, sizeof(struct ndtmsg),
NLM_F_MULTI);
nlh = nlmsg_put(skb, pid, seq, type, sizeof(*ndtmsg), flags);
if (nlh == NULL)
return -ENOBUFS;
ndtmsg = NLMSG_DATA(nlh);
ndtmsg = nlmsg_data(nlh);
read_lock_bh(&tbl->lock);
ndtmsg->ndtm_family = tbl->family;
ndtmsg->ndtm_pad1 = 0;
ndtmsg->ndtm_pad2 = 0;
RTA_PUT_STRING(skb, NDTA_NAME, tbl->id);
RTA_PUT_MSECS(skb, NDTA_GC_INTERVAL, tbl->gc_interval);
RTA_PUT_U32(skb, NDTA_THRESH1, tbl->gc_thresh1);
RTA_PUT_U32(skb, NDTA_THRESH2, tbl->gc_thresh2);
RTA_PUT_U32(skb, NDTA_THRESH3, tbl->gc_thresh3);
NLA_PUT_STRING(skb, NDTA_NAME, tbl->id);
NLA_PUT_MSECS(skb, NDTA_GC_INTERVAL, tbl->gc_interval);
NLA_PUT_U32(skb, NDTA_THRESH1, tbl->gc_thresh1);
NLA_PUT_U32(skb, NDTA_THRESH2, tbl->gc_thresh2);
NLA_PUT_U32(skb, NDTA_THRESH3, tbl->gc_thresh3);
{
unsigned long now = jiffies;
@ -1665,7 +1668,7 @@ static int neightbl_fill_info(struct neigh_table *tbl, struct sk_buff *skb,
.ndtc_proxy_qlen = tbl->proxy_queue.qlen,
};
RTA_PUT(skb, NDTA_CONFIG, sizeof(ndc), &ndc);
NLA_PUT(skb, NDTA_CONFIG, sizeof(ndc), &ndc);
}
{
@ -1690,55 +1693,50 @@ static int neightbl_fill_info(struct neigh_table *tbl, struct sk_buff *skb,
ndst.ndts_forced_gc_runs += st->forced_gc_runs;
}
RTA_PUT(skb, NDTA_STATS, sizeof(ndst), &ndst);
NLA_PUT(skb, NDTA_STATS, sizeof(ndst), &ndst);
}
BUG_ON(tbl->parms.dev);
if (neightbl_fill_parms(skb, &tbl->parms) < 0)
goto rtattr_failure;
goto nla_put_failure;
read_unlock_bh(&tbl->lock);
return NLMSG_END(skb, nlh);
return nlmsg_end(skb, nlh);
rtattr_failure:
nla_put_failure:
read_unlock_bh(&tbl->lock);
return NLMSG_CANCEL(skb, nlh);
nlmsg_failure:
return -1;
return nlmsg_cancel(skb, nlh);
}
static int neightbl_fill_param_info(struct neigh_table *tbl,
static int neightbl_fill_param_info(struct sk_buff *skb,
struct neigh_table *tbl,
struct neigh_parms *parms,
struct sk_buff *skb,
struct netlink_callback *cb)
u32 pid, u32 seq, int type,
unsigned int flags)
{
struct ndtmsg *ndtmsg;
struct nlmsghdr *nlh;
nlh = NLMSG_NEW_ANSWER(skb, cb, RTM_NEWNEIGHTBL, sizeof(struct ndtmsg),
NLM_F_MULTI);
nlh = nlmsg_put(skb, pid, seq, type, sizeof(*ndtmsg), flags);
if (nlh == NULL)
return -ENOBUFS;
ndtmsg = NLMSG_DATA(nlh);
ndtmsg = nlmsg_data(nlh);
read_lock_bh(&tbl->lock);
ndtmsg->ndtm_family = tbl->family;
ndtmsg->ndtm_pad1 = 0;
ndtmsg->ndtm_pad2 = 0;
RTA_PUT_STRING(skb, NDTA_NAME, tbl->id);
if (neightbl_fill_parms(skb, parms) < 0)
goto rtattr_failure;
if (nla_put_string(skb, NDTA_NAME, tbl->id) < 0 ||
neightbl_fill_parms(skb, parms) < 0)
goto errout;
read_unlock_bh(&tbl->lock);
return NLMSG_END(skb, nlh);
rtattr_failure:
return nlmsg_end(skb, nlh);
errout:
read_unlock_bh(&tbl->lock);
return NLMSG_CANCEL(skb, nlh);
nlmsg_failure:
return -1;
return nlmsg_cancel(skb, nlh);
}
static inline struct neigh_parms *lookup_neigh_params(struct neigh_table *tbl,
@ -1905,34 +1903,43 @@ errout:
int neightbl_dump_info(struct sk_buff *skb, struct netlink_callback *cb)
{
int idx, family;
int s_idx = cb->args[0];
int family, tidx, nidx = 0;
int tbl_skip = cb->args[0];
int neigh_skip = cb->args[1];
struct neigh_table *tbl;
family = ((struct rtgenmsg *)NLMSG_DATA(cb->nlh))->rtgen_family;
family = ((struct rtgenmsg *) nlmsg_data(cb->nlh))->rtgen_family;
read_lock(&neigh_tbl_lock);
for (tbl = neigh_tables, idx = 0; tbl; tbl = tbl->next) {
for (tbl = neigh_tables, tidx = 0; tbl; tbl = tbl->next, tidx++) {
struct neigh_parms *p;
if (idx < s_idx || (family && tbl->family != family))
if (tidx < tbl_skip || (family && tbl->family != family))
continue;
if (neightbl_fill_info(tbl, skb, cb) <= 0)
if (neightbl_fill_info(skb, tbl, NETLINK_CB(cb->skb).pid,
cb->nlh->nlmsg_seq, RTM_NEWNEIGHTBL,
NLM_F_MULTI) <= 0)
break;
for (++idx, p = tbl->parms.next; p; p = p->next, idx++) {
if (idx < s_idx)
for (nidx = 0, p = tbl->parms.next; p; p = p->next, nidx++) {
if (nidx < neigh_skip)
continue;
if (neightbl_fill_param_info(tbl, p, skb, cb) <= 0)
if (neightbl_fill_param_info(skb, tbl, p,
NETLINK_CB(cb->skb).pid,
cb->nlh->nlmsg_seq,
RTM_NEWNEIGHTBL,
NLM_F_MULTI) <= 0)
goto out;
}
neigh_skip = 0;
}
out:
read_unlock(&neigh_tbl_lock);
cb->args[0] = idx;
cb->args[0] = tidx;
cb->args[1] = nidx;
return skb->len;
}