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mptcp: make sure flag signal is set when add addr with port

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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: a77e9179c7 ("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>
This commit is contained in:
Jianguo Wu 2021-05-27 16:54:28 -07:00 committed by Jakub Kicinski
parent ae514983f2
commit eb5fb629f5
1 changed files with 7 additions and 1 deletions
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8
net/mptcp/pm_netlink.c
View File

@ -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;
}