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authorDaniel Machon <daniel.machon@microchip.com>2022-11-14 12:29:50 +0300
committerPaolo Abeni <pabeni@redhat.com>2022-11-15 17:27:43 +0300
commit7eba4505394e21df44dcace6b5d741a8e2deea3a (patch)
treeadf6896e1ba2b2b6f5fa9259ecf647bc04deb8f2 /net/dcb
parentd9282e48c6088105a98b98153a707fdbcdbf75b1 (diff)
downloadlinux-7eba4505394e21df44dcace6b5d741a8e2deea3a.tar.xz
net: dcb: move getapptrust to separate function
This patch fixes a frame size warning, reported by kernel test robot. >> net/dcb/dcbnl.c:1230:1: warning: the frame size of 1244 bytes is >> larger than 1024 bytes [-Wframe-larger-than=] The getapptrust part of dcbnl_ieee_fill is moved to a separate function, and the selector array is now dynamically allocated, instead of stack allocated. Tested on microchip sparx5 driver. Fixes: 6182d5875c33 ("net: dcb: add new apptrust attribute") Reported-by: kernel test robot <lkp@intel.com> Signed-off-by: Daniel Machon <daniel.machon@microchip.com> Link: https://lore.kernel.org/r/20221114092950.2490451-1-daniel.machon@microchip.com Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Diffstat (limited to 'net/dcb')
-rw-r--r--net/dcb/dcbnl.c65
1 files changed, 43 insertions, 22 deletions
diff --git a/net/dcb/dcbnl.c b/net/dcb/dcbnl.c
index cec0632f96db..f9949e051f49 100644
--- a/net/dcb/dcbnl.c
+++ b/net/dcb/dcbnl.c
@@ -1060,11 +1060,50 @@ nla_put_failure:
return err;
}
+static int dcbnl_getapptrust(struct net_device *netdev, struct sk_buff *skb)
+{
+ const struct dcbnl_rtnl_ops *ops = netdev->dcbnl_ops;
+ enum ieee_attrs_app type;
+ struct nlattr *apptrust;
+ int nselectors, err, i;
+ u8 *selectors;
+
+ selectors = kzalloc(IEEE_8021QAZ_APP_SEL_MAX + 1, GFP_KERNEL);
+ if (!selectors)
+ return -ENOMEM;
+
+ err = ops->dcbnl_getapptrust(netdev, selectors, &nselectors);
+ if (err) {
+ err = 0;
+ goto out;
+ }
+
+ apptrust = nla_nest_start(skb, DCB_ATTR_DCB_APP_TRUST_TABLE);
+ if (!apptrust) {
+ err = -EMSGSIZE;
+ goto out;
+ }
+
+ for (i = 0; i < nselectors; i++) {
+ type = dcbnl_app_attr_type_get(selectors[i]);
+ err = nla_put_u8(skb, type, selectors[i]);
+ if (err) {
+ nla_nest_cancel(skb, apptrust);
+ goto out;
+ }
+ }
+ nla_nest_end(skb, apptrust);
+
+out:
+ kfree(selectors);
+ return err;
+}
+
/* Handle IEEE 802.1Qaz/802.1Qau/802.1Qbb GET commands. */
static int dcbnl_ieee_fill(struct sk_buff *skb, struct net_device *netdev)
{
const struct dcbnl_rtnl_ops *ops = netdev->dcbnl_ops;
- struct nlattr *ieee, *app, *apptrust;
+ struct nlattr *ieee, *app;
struct dcb_app_type *itr;
int dcbx;
int err;
@@ -1168,27 +1207,9 @@ static int dcbnl_ieee_fill(struct sk_buff *skb, struct net_device *netdev)
nla_nest_end(skb, app);
if (ops->dcbnl_getapptrust) {
- u8 selectors[IEEE_8021QAZ_APP_SEL_MAX + 1] = {0};
- int nselectors, i;
-
- apptrust = nla_nest_start(skb, DCB_ATTR_DCB_APP_TRUST_TABLE);
- if (!apptrust)
- return -EMSGSIZE;
-
- err = ops->dcbnl_getapptrust(netdev, selectors, &nselectors);
- if (!err) {
- for (i = 0; i < nselectors; i++) {
- enum ieee_attrs_app type =
- dcbnl_app_attr_type_get(selectors[i]);
- err = nla_put_u8(skb, type, selectors[i]);
- if (err) {
- nla_nest_cancel(skb, apptrust);
- return err;
- }
- }
- }
-
- nla_nest_end(skb, apptrust);
+ err = dcbnl_getapptrust(netdev, skb);
+ if (err)
+ return err;
}
/* get peer info if available */