[NEIGH]: Convert neighbour table dumping to new netlink api
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
David S. Miller
parent
6b3f8674bc
commit
ca860fb39b
1 changed files with 73 additions and 66 deletions
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@ -1597,56 +1597,59 @@ int neigh_add(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg)
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static int neightbl_fill_parms(struct sk_buff *skb, struct neigh_parms *parms)
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{
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struct rtattr *nest = NULL;
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nest = RTA_NEST(skb, NDTA_PARMS);
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struct nlattr *nest;
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nest = nla_nest_start(skb, NDTA_PARMS);
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if (nest == NULL)
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return -ENOBUFS;
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if (parms->dev)
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RTA_PUT_U32(skb, NDTPA_IFINDEX, parms->dev->ifindex);
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NLA_PUT_U32(skb, NDTPA_IFINDEX, parms->dev->ifindex);
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RTA_PUT_U32(skb, NDTPA_REFCNT, atomic_read(&parms->refcnt));
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RTA_PUT_U32(skb, NDTPA_QUEUE_LEN, parms->queue_len);
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RTA_PUT_U32(skb, NDTPA_PROXY_QLEN, parms->proxy_qlen);
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RTA_PUT_U32(skb, NDTPA_APP_PROBES, parms->app_probes);
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RTA_PUT_U32(skb, NDTPA_UCAST_PROBES, parms->ucast_probes);
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RTA_PUT_U32(skb, NDTPA_MCAST_PROBES, parms->mcast_probes);
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RTA_PUT_MSECS(skb, NDTPA_REACHABLE_TIME, parms->reachable_time);
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RTA_PUT_MSECS(skb, NDTPA_BASE_REACHABLE_TIME,
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NLA_PUT_U32(skb, NDTPA_REFCNT, atomic_read(&parms->refcnt));
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NLA_PUT_U32(skb, NDTPA_QUEUE_LEN, parms->queue_len);
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NLA_PUT_U32(skb, NDTPA_PROXY_QLEN, parms->proxy_qlen);
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NLA_PUT_U32(skb, NDTPA_APP_PROBES, parms->app_probes);
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NLA_PUT_U32(skb, NDTPA_UCAST_PROBES, parms->ucast_probes);
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NLA_PUT_U32(skb, NDTPA_MCAST_PROBES, parms->mcast_probes);
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NLA_PUT_MSECS(skb, NDTPA_REACHABLE_TIME, parms->reachable_time);
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NLA_PUT_MSECS(skb, NDTPA_BASE_REACHABLE_TIME,
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parms->base_reachable_time);
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RTA_PUT_MSECS(skb, NDTPA_GC_STALETIME, parms->gc_staletime);
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RTA_PUT_MSECS(skb, NDTPA_DELAY_PROBE_TIME, parms->delay_probe_time);
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RTA_PUT_MSECS(skb, NDTPA_RETRANS_TIME, parms->retrans_time);
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RTA_PUT_MSECS(skb, NDTPA_ANYCAST_DELAY, parms->anycast_delay);
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RTA_PUT_MSECS(skb, NDTPA_PROXY_DELAY, parms->proxy_delay);
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RTA_PUT_MSECS(skb, NDTPA_LOCKTIME, parms->locktime);
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NLA_PUT_MSECS(skb, NDTPA_GC_STALETIME, parms->gc_staletime);
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NLA_PUT_MSECS(skb, NDTPA_DELAY_PROBE_TIME, parms->delay_probe_time);
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NLA_PUT_MSECS(skb, NDTPA_RETRANS_TIME, parms->retrans_time);
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NLA_PUT_MSECS(skb, NDTPA_ANYCAST_DELAY, parms->anycast_delay);
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NLA_PUT_MSECS(skb, NDTPA_PROXY_DELAY, parms->proxy_delay);
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NLA_PUT_MSECS(skb, NDTPA_LOCKTIME, parms->locktime);
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return RTA_NEST_END(skb, nest);
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return nla_nest_end(skb, nest);
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rtattr_failure:
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return RTA_NEST_CANCEL(skb, nest);
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nla_put_failure:
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return nla_nest_cancel(skb, nest);
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}
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static int neightbl_fill_info(struct neigh_table *tbl, struct sk_buff *skb,
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struct netlink_callback *cb)
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static int neightbl_fill_info(struct sk_buff *skb, struct neigh_table *tbl,
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u32 pid, u32 seq, int type, int flags)
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{
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struct nlmsghdr *nlh;
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struct ndtmsg *ndtmsg;
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nlh = NLMSG_NEW_ANSWER(skb, cb, RTM_NEWNEIGHTBL, sizeof(struct ndtmsg),
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NLM_F_MULTI);
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nlh = nlmsg_put(skb, pid, seq, type, sizeof(*ndtmsg), flags);
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if (nlh == NULL)
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return -ENOBUFS;
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ndtmsg = NLMSG_DATA(nlh);
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ndtmsg = nlmsg_data(nlh);
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read_lock_bh(&tbl->lock);
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ndtmsg->ndtm_family = tbl->family;
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ndtmsg->ndtm_pad1 = 0;
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ndtmsg->ndtm_pad2 = 0;
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RTA_PUT_STRING(skb, NDTA_NAME, tbl->id);
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RTA_PUT_MSECS(skb, NDTA_GC_INTERVAL, tbl->gc_interval);
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RTA_PUT_U32(skb, NDTA_THRESH1, tbl->gc_thresh1);
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RTA_PUT_U32(skb, NDTA_THRESH2, tbl->gc_thresh2);
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RTA_PUT_U32(skb, NDTA_THRESH3, tbl->gc_thresh3);
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NLA_PUT_STRING(skb, NDTA_NAME, tbl->id);
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NLA_PUT_MSECS(skb, NDTA_GC_INTERVAL, tbl->gc_interval);
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NLA_PUT_U32(skb, NDTA_THRESH1, tbl->gc_thresh1);
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NLA_PUT_U32(skb, NDTA_THRESH2, tbl->gc_thresh2);
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NLA_PUT_U32(skb, NDTA_THRESH3, tbl->gc_thresh3);
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{
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unsigned long now = jiffies;
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@ -1665,7 +1668,7 @@ static int neightbl_fill_info(struct neigh_table *tbl, struct sk_buff *skb,
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.ndtc_proxy_qlen = tbl->proxy_queue.qlen,
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};
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RTA_PUT(skb, NDTA_CONFIG, sizeof(ndc), &ndc);
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NLA_PUT(skb, NDTA_CONFIG, sizeof(ndc), &ndc);
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}
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{
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@ -1690,55 +1693,50 @@ static int neightbl_fill_info(struct neigh_table *tbl, struct sk_buff *skb,
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ndst.ndts_forced_gc_runs += st->forced_gc_runs;
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}
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RTA_PUT(skb, NDTA_STATS, sizeof(ndst), &ndst);
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NLA_PUT(skb, NDTA_STATS, sizeof(ndst), &ndst);
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}
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BUG_ON(tbl->parms.dev);
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if (neightbl_fill_parms(skb, &tbl->parms) < 0)
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goto rtattr_failure;
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goto nla_put_failure;
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read_unlock_bh(&tbl->lock);
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return NLMSG_END(skb, nlh);
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return nlmsg_end(skb, nlh);
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rtattr_failure:
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nla_put_failure:
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read_unlock_bh(&tbl->lock);
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return NLMSG_CANCEL(skb, nlh);
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nlmsg_failure:
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return -1;
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return nlmsg_cancel(skb, nlh);
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}
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static int neightbl_fill_param_info(struct neigh_table *tbl,
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static int neightbl_fill_param_info(struct sk_buff *skb,
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struct neigh_table *tbl,
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struct neigh_parms *parms,
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struct sk_buff *skb,
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struct netlink_callback *cb)
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u32 pid, u32 seq, int type,
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unsigned int flags)
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{
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struct ndtmsg *ndtmsg;
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struct nlmsghdr *nlh;
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nlh = NLMSG_NEW_ANSWER(skb, cb, RTM_NEWNEIGHTBL, sizeof(struct ndtmsg),
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NLM_F_MULTI);
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nlh = nlmsg_put(skb, pid, seq, type, sizeof(*ndtmsg), flags);
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if (nlh == NULL)
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return -ENOBUFS;
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ndtmsg = NLMSG_DATA(nlh);
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ndtmsg = nlmsg_data(nlh);
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read_lock_bh(&tbl->lock);
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ndtmsg->ndtm_family = tbl->family;
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ndtmsg->ndtm_pad1 = 0;
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ndtmsg->ndtm_pad2 = 0;
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RTA_PUT_STRING(skb, NDTA_NAME, tbl->id);
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if (neightbl_fill_parms(skb, parms) < 0)
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goto rtattr_failure;
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if (nla_put_string(skb, NDTA_NAME, tbl->id) < 0 ||
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neightbl_fill_parms(skb, parms) < 0)
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goto errout;
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read_unlock_bh(&tbl->lock);
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return NLMSG_END(skb, nlh);
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rtattr_failure:
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return nlmsg_end(skb, nlh);
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errout:
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read_unlock_bh(&tbl->lock);
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return NLMSG_CANCEL(skb, nlh);
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nlmsg_failure:
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return -1;
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return nlmsg_cancel(skb, nlh);
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}
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static inline struct neigh_parms *lookup_neigh_params(struct neigh_table *tbl,
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@ -1905,34 +1903,43 @@ int neightbl_set(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg)
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int neightbl_dump_info(struct sk_buff *skb, struct netlink_callback *cb)
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{
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int idx, family;
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int s_idx = cb->args[0];
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int family, tidx, nidx = 0;
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int tbl_skip = cb->args[0];
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int neigh_skip = cb->args[1];
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struct neigh_table *tbl;
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family = ((struct rtgenmsg *)NLMSG_DATA(cb->nlh))->rtgen_family;
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family = ((struct rtgenmsg *) nlmsg_data(cb->nlh))->rtgen_family;
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read_lock(&neigh_tbl_lock);
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for (tbl = neigh_tables, idx = 0; tbl; tbl = tbl->next) {
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for (tbl = neigh_tables, tidx = 0; tbl; tbl = tbl->next, tidx++) {
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struct neigh_parms *p;
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if (idx < s_idx || (family && tbl->family != family))
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if (tidx < tbl_skip || (family && tbl->family != family))
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continue;
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if (neightbl_fill_info(tbl, skb, cb) <= 0)
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if (neightbl_fill_info(skb, tbl, NETLINK_CB(cb->skb).pid,
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cb->nlh->nlmsg_seq, RTM_NEWNEIGHTBL,
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NLM_F_MULTI) <= 0)
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break;
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for (++idx, p = tbl->parms.next; p; p = p->next, idx++) {
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if (idx < s_idx)
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for (nidx = 0, p = tbl->parms.next; p; p = p->next, nidx++) {
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if (nidx < neigh_skip)
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continue;
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if (neightbl_fill_param_info(tbl, p, skb, cb) <= 0)
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if (neightbl_fill_param_info(skb, tbl, p,
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NETLINK_CB(cb->skb).pid,
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cb->nlh->nlmsg_seq,
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RTM_NEWNEIGHTBL,
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NLM_F_MULTI) <= 0)
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goto out;
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}
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neigh_skip = 0;
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}
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out:
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read_unlock(&neigh_tbl_lock);
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cb->args[0] = idx;
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cb->args[0] = tidx;
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cb->args[1] = nidx;
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return skb->len;
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}
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