diff options
| author | Geliang Tang <geliang.tang@suse.com> | 2022-02-05 03:03:29 +0300 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2022-02-05 07:30:23 +0300 |
| commit | 09f12c3ab7a5dc30c4efc6a530891f377d9ba1f4 (patch) | |
| tree | 31f795210b45462d2001101b22d9256646f95793 | |
| parent | 660a38bf6f622f0ad4255eb58c111d40c330da3b (diff) | |
| download | linux-09f12c3ab7a5dc30c4efc6a530891f377d9ba1f4.tar.xz | |
mptcp: allow to use port and non-signal in set_flags
It's illegal to use both port and non-signal flags for adding address.
But it's legal to use both of them for setting flags, which always uses
non-signal flags, backup or fullmesh.
This patch moves this non-signal flag with port check from
mptcp_pm_parse_addr() to mptcp_nl_cmd_add_addr(). Do the check only when
adding addresses, not setting flags or deleting addresses.
Signed-off-by: Geliang Tang <geliang.tang@suse.com>
Signed-off-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
| -rw-r--r-- | net/mptcp/pm_netlink.c | 13 |
1 files changed, 6 insertions, 7 deletions
diff --git a/net/mptcp/pm_netlink.c b/net/mptcp/pm_netlink.c index d47795748ad7..5464c2d268bd 100644 --- a/net/mptcp/pm_netlink.c +++ b/net/mptcp/pm_netlink.c @@ -1174,14 +1174,8 @@ 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 (!(entry->flags & MPTCP_PM_ADDR_FLAG_SIGNAL)) { - NL_SET_ERR_MSG_ATTR(info->extack, attr, - "flags must have signal when using port"); - return -EINVAL; - } + if (tb[MPTCP_PM_ADDR_ATTR_PORT]) entry->addr.port = htons(nla_get_u16(tb[MPTCP_PM_ADDR_ATTR_PORT])); - } return 0; } @@ -1227,6 +1221,11 @@ static int mptcp_nl_cmd_add_addr(struct sk_buff *skb, struct genl_info *info) if (ret < 0) return ret; + if (addr.addr.port && !(addr.flags & MPTCP_PM_ADDR_FLAG_SIGNAL)) { + GENL_SET_ERR_MSG(info, "flags must have signal when using port"); + return -EINVAL; + } + entry = kmalloc(sizeof(*entry), GFP_KERNEL); if (!entry) { GENL_SET_ERR_MSG(info, "can't allocate addr"); |