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genetlink: pass extended ACK report down

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Pass the extended ACK reporting struct down from generic netlink to
the families, using the existing struct genl_info for simplicity.

Also add support to set the extended ACK information from generic
netlink users.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Reviewed-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Johannes Berg
2017-04-12 14:34:05 +02:00
committed by David S. Miller
parent 2d4bc93368
commit 7ab606d160
2 changed files with 16 additions and 2 deletions
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net/netlink/genetlink.c
+4 -2
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@@ -497,7 +497,8 @@ static int genl_lock_done(struct netlink_callback *cb)
static int genl_family_rcv_msg(const struct genl_family *family,
struct sk_buff *skb,
struct nlmsghdr *nlh)
struct nlmsghdr *nlh,
struct netlink_ext_ack *extack)
{
const struct genl_ops *ops;
struct net *net = sock_net(skb->sk);
@@ -584,6 +585,7 @@ static int genl_family_rcv_msg(const struct genl_family *family,
info.genlhdr = nlmsg_data(nlh);
info.userhdr = nlmsg_data(nlh) + GENL_HDRLEN;
info.attrs = attrbuf;
info.extack = extack;
genl_info_net_set(&info, net);
memset(&info.user_ptr, 0, sizeof(info.user_ptr));
@@ -618,7 +620,7 @@ static int genl_rcv_msg(struct sk_buff *skb, struct nlmsghdr *nlh,
if (!family->parallel_ops)
genl_lock();
err = genl_family_rcv_msg(family, skb, nlh);
err = genl_family_rcv_msg(family, skb, nlh, extack);
if (!family->parallel_ops)
genl_unlock();