Squash-to: mptcp: netlink: Add MPTCP_PM_CMD_ANNOUNCE

Signed-off-by: Kishen Maloor <kishen.maloor@intel.com>
Signed-off-by: Matthieu Baerts <matthieu.baerts@tessares.net>

net/mptcp/pm_userspace.c

@@ -126,42 +126,42 @@ int mptcp_nl_cmd_announce(struct sk_buff *skb, struct genl_info *info)
 	struct nlattr *addr = info->attrs[MPTCP_PM_ATTR_ADDR];
 	struct mptcp_pm_addr_entry addr_val;
 	struct mptcp_sock *msk;
+	int err = -EINVAL;
 	u32 token_val;
-	int err;
 
 	if (!addr || !token) {
 		GENL_SET_ERR_MSG(info, "missing required inputs");
-		return -EINVAL;
+		return err;
 	}
 
 	token_val = nla_get_u32(token);
 
 	msk = mptcp_token_get_sock(sock_net(skb->sk), token_val);
 	if (!msk) {
 		NL_SET_ERR_MSG_ATTR(info->extack, token, "invalid token");
-		return -EINVAL;
+		return err;
 	}
 
 	if (!mptcp_pm_is_userspace(msk)) {
 		GENL_SET_ERR_MSG(info, "invalid request; userspace PM not selected");
-		return -EINVAL;
+		goto announce_err;
 	}
 
 	err = mptcp_pm_parse_entry(addr, info, true, &addr_val);
 	if (err < 0) {
 		GENL_SET_ERR_MSG(info, "error parsing local address");
-		return err;
+		goto announce_err;
 	}
 
 	if (addr_val.addr.id == 0 || !(addr_val.flags & MPTCP_PM_ADDR_FLAG_SIGNAL)) {
 		GENL_SET_ERR_MSG(info, "invalid addr id or flags");
-		return -EINVAL;
+		goto announce_err;
 	}
 
 	err = mptcp_userspace_pm_append_new_local_addr(msk, &addr_val);
 	if (err < 0) {
 		GENL_SET_ERR_MSG(info, "did not match address and id");
-		return err;
+		goto announce_err;
 	}
 
 	lock_sock((struct sock *)msk);
@@ -175,5 +175,8 @@ int mptcp_nl_cmd_announce(struct sk_buff *skb, struct genl_info *info)
 	spin_unlock_bh(&msk->pm.lock);
 	release_sock((struct sock *)msk);
 
-	return 0;
+	err = 0;
+ announce_err:
+	sock_put((struct sock *)msk);
+	return err;
 }