[NETLINK]: Correctly set NLM_F_MULTI without checking the pid
This patch rectifies some rtnetlink message builders that derive the
flags from the pid. It is now explicit like the other cases
which get it right. Also fixes half a dozen dumpers which did not
set NLM_F_MULTI at all.
Signed-off-by: Jamal Hadi Salim <hadi@cyberus.ca>
Signed-off-by: Thomas Graf <tgraf@suug.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/ipv4/route.c b/net/ipv4/route.c
index a682d28..f4d53c9 100644
--- a/net/ipv4/route.c
+++ b/net/ipv4/route.c
@@ -2581,7 +2581,7 @@
}
static int rt_fill_info(struct sk_buff *skb, u32 pid, u32 seq, int event,
- int nowait)
+ int nowait, unsigned int flags)
{
struct rtable *rt = (struct rtable*)skb->dst;
struct rtmsg *r;
@@ -2591,9 +2591,8 @@
#ifdef CONFIG_IP_MROUTE
struct rtattr *eptr;
#endif
- nlh = NLMSG_PUT(skb, pid, seq, event, sizeof(*r));
+ nlh = NLMSG_NEW(skb, pid, seq, event, sizeof(*r), flags);
r = NLMSG_DATA(nlh);
- nlh->nlmsg_flags = (nowait && pid) ? NLM_F_MULTI : 0;
r->rtm_family = AF_INET;
r->rtm_dst_len = 32;
r->rtm_src_len = 0;
@@ -2744,7 +2743,7 @@
NETLINK_CB(skb).dst_pid = NETLINK_CB(in_skb).pid;
err = rt_fill_info(skb, NETLINK_CB(in_skb).pid, nlh->nlmsg_seq,
- RTM_NEWROUTE, 0);
+ RTM_NEWROUTE, 0, 0);
if (!err)
goto out_free;
if (err < 0) {
@@ -2781,8 +2780,8 @@
continue;
skb->dst = dst_clone(&rt->u.dst);
if (rt_fill_info(skb, NETLINK_CB(cb->skb).pid,
- cb->nlh->nlmsg_seq,
- RTM_NEWROUTE, 1) <= 0) {
+ cb->nlh->nlmsg_seq, RTM_NEWROUTE,
+ 1, NLM_F_MULTI) <= 0) {
dst_release(xchg(&skb->dst, NULL));
rcu_read_unlock_bh();
goto done;