Attention is currently required from: flichtenheld, ordex, plaisthos.
Hello cron2, flichtenheld, plaisthos,
I'd like you to reexamine a change. Please visit
http://gerrit.openvpn.net/c/openvpn/+/841?usp=email
to look at the new patch set (#9).
Change subject: dco_linux: extend netlink error cb with extra info
......................................................................
dco_linux: extend netlink error cb with extra info
A netlink error may contain more specific attributes: i.e.
missing attributes or missing neted objects.
Parse and print this information too.
Note that we are re-defining some enum entries that exist
in netlink.h starting with linux-6.1.
Since we do support distros not shipping an up-to-date
netlink.h, we had to re-define the entries we need for
this patch.
Change-Id: I9e27ff335d892429334137d028f8503da4e4ca5b
Signed-off-by: Antonio Quartulli <anto...@mandelbit.com>
---
M src/openvpn/dco_linux.c
1 file changed, 33 insertions(+), 2 deletions(-)
git pull ssh://gerrit.openvpn.net:29418/openvpn refs/changes/41/841/9
diff --git a/src/openvpn/dco_linux.c b/src/openvpn/dco_linux.c
index b038382..fa7abd3 100644
--- a/src/openvpn/dco_linux.c
+++ b/src/openvpn/dco_linux.c
@@ -291,6 +291,25 @@
return NL_SKIP;
}
+/* The following enum members exist in netlink.h since linux-6.1.
+ * However, some distro we support still ship an old header, thus
+ * failing the OpenVPN compilation.
+ *
+ * For the time being we add the needed defines manually.
+ * We will drop this definition once we stop supporting those old
+ * distros.
+ *
+ * @NLMSGERR_ATTR_MISS_TYPE: type of a missing required attribute,
+ * %NLMSGERR_ATTR_MISS_NEST will not be present if the attribute was
+ * missing at the message level
+ * @NLMSGERR_ATTR_MISS_NEST: offset of the nest where attribute was missing
+ */
+enum ovpn_nlmsgerr_attrs {
+ OVPN_NLMSGERR_ATTR_MISS_TYPE = 5,
+ OVPN_NLMSGERR_ATTR_MISS_NEST = 6,
+ OVPN_NLMSGERR_ATTR_MAX = 6,
+};
+
/* This function is used as error callback on the netlink socket.
* When something goes wrong and the kernel returns an error, this function is
* invoked.
@@ -304,7 +323,7 @@
struct nlmsgerr *err, void *arg)
{
struct nlmsghdr *nlh = (struct nlmsghdr *)err - 1;
- struct nlattr *tb_msg[NLMSGERR_ATTR_MAX + 1];
+ struct nlattr *tb_msg[OVPN_NLMSGERR_ATTR_MAX + 1];
int len = nlh->nlmsg_len;
struct nlattr *attrs;
int *ret = arg;
@@ -330,7 +349,7 @@
attrs = (void *)((unsigned char *)nlh + ack_len);
len -= ack_len;
- nla_parse(tb_msg, NLMSGERR_ATTR_MAX, attrs, len, NULL);
+ nla_parse(tb_msg, OVPN_NLMSGERR_ATTR_MAX, attrs, len, NULL);
if (tb_msg[NLMSGERR_ATTR_MSG])
{
len = strnlen((char *)nla_data(tb_msg[NLMSGERR_ATTR_MSG]),
@@ -339,6 +358,18 @@
(char *)nla_data(tb_msg[NLMSGERR_ATTR_MSG]));
}
+ if (tb_msg[OVPN_NLMSGERR_ATTR_MISS_NEST])
+ {
+ msg(M_WARN, "kernel error: missing required nesting type %u\n",
+ nla_get_u32(tb_msg[OVPN_NLMSGERR_ATTR_MISS_NEST]));
+ }
+
+ if (tb_msg[OVPN_NLMSGERR_ATTR_MISS_TYPE])
+ {
+ msg(M_WARN, "kernel error: missing required attribute type %u\n",
+ nla_get_u32(tb_msg[OVPN_NLMSGERR_ATTR_MISS_TYPE]));
+ }
+
return NL_STOP;
}
--
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Gerrit-Project: openvpn
Gerrit-Branch: master
Gerrit-Change-Id: I9e27ff335d892429334137d028f8503da4e4ca5b
Gerrit-Change-Number: 841
Gerrit-PatchSet: 9
Gerrit-Owner: ordex <a...@unstable.cc>
Gerrit-Reviewer: cron2 <g...@greenie.muc.de>
Gerrit-Reviewer: flichtenheld <fr...@lichtenheld.com>
Gerrit-Reviewer: plaisthos <arne-open...@rfc2549.org>
Gerrit-CC: openvpn-devel <openvpn-devel@lists.sourceforge.net>
Gerrit-Attention: plaisthos <arne-open...@rfc2549.org>
Gerrit-Attention: flichtenheld <fr...@lichtenheld.com>
Gerrit-Attention: ordex <a...@unstable.cc>
Gerrit-MessageType: newpatchset
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