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authorTom Herbert <tom@herbertland.com>2015-12-16 02:41:37 +0300
committerDavid S. Miller <davem@davemloft.net>2015-12-16 07:25:20 +0300
commitfc9e50f5a5a4e1fa9ba2756f745a13e693cf6a06 (patch)
tree168120764bcdbba0aad5859c9044f7dd84eb4350 /net/netlink/af_netlink.c
parent3502cad73c4bbf8f6365d539e814159275252c59 (diff)
downloadlinux-fc9e50f5a5a4e1fa9ba2756f745a13e693cf6a06.tar.xz
netlink: add a start callback for starting a netlink dump
The start callback allows the caller to set up a context for the dump callbacks. Presumably, the context can then be destroyed in the done callback. Signed-off-by: Tom Herbert <tom@herbertland.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/netlink/af_netlink.c')
-rw-r--r--net/netlink/af_netlink.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/net/netlink/af_netlink.c b/net/netlink/af_netlink.c
index 59651af8cc27..81dc1bb6e016 100644
--- a/net/netlink/af_netlink.c
+++ b/net/netlink/af_netlink.c
@@ -2915,6 +2915,7 @@ int __netlink_dump_start(struct sock *ssk, struct sk_buff *skb,
cb = &nlk->cb;
memset(cb, 0, sizeof(*cb));
+ cb->start = control->start;
cb->dump = control->dump;
cb->done = control->done;
cb->nlh = nlh;
@@ -2927,6 +2928,9 @@ int __netlink_dump_start(struct sock *ssk, struct sk_buff *skb,
mutex_unlock(nlk->cb_mutex);
+ if (cb->start)
+ cb->start(cb);
+
ret = netlink_dump(sk);
sock_put(sk);