diff options
| author | Jianguo Wu <wujianguo@chinatelecom.cn> | 2021-05-28 02:54:28 +0300 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2021-05-28 23:59:16 +0300 |
| commit | eb5fb629f56da3f40f496c807da44a7ce7644779 (patch) | |
| tree | d3d6be4efcd6fc1cad40abe448404bb766cffdf0 /net/mptcp | |
| parent | ae514983f2e416cb1476bdd8e23b6d9be4ce94cd (diff) | |
| download | linux-eb5fb629f56da3f40f496c807da44a7ce7644779.tar.xz | |
mptcp: make sure flag signal is set when add addr with port
When add address with port, it is mean to create a listening socket,
and send an ADD_ADDR to remote, so it must have flag signal set,
add this check in mptcp_pm_parse_addr().
Fixes: a77e9179c7651 ("mptcp: deal with MPTCP_PM_ADDR_ATTR_PORT in PM netlink")
Acked-by: Geliang Tang <geliangtang@gmail.com>
Reviewed-by: Matthieu Baerts <matthieu.baerts@tessares.net>
Signed-off-by: Jianguo Wu <wujianguo@chinatelecom.cn>
Signed-off-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'net/mptcp')
| -rw-r--r-- | net/mptcp/pm_netlink.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/net/mptcp/pm_netlink.c b/net/mptcp/pm_netlink.c index 7dbc4f308dbe..09722598994d 100644 --- a/net/mptcp/pm_netlink.c +++ b/net/mptcp/pm_netlink.c @@ -971,8 +971,14 @@ skip_family: if (tb[MPTCP_PM_ADDR_ATTR_FLAGS]) entry->flags = nla_get_u32(tb[MPTCP_PM_ADDR_ATTR_FLAGS]); - if (tb[MPTCP_PM_ADDR_ATTR_PORT]) + if (tb[MPTCP_PM_ADDR_ATTR_PORT]) { + if (!(entry->flags & MPTCP_PM_ADDR_FLAG_SIGNAL)) { + NL_SET_ERR_MSG_ATTR(info->extack, attr, + "flags must have signal when using port"); + return -EINVAL; + } entry->addr.port = htons(nla_get_u16(tb[MPTCP_PM_ADDR_ATTR_PORT])); + } return 0; } |