[PATCH] d80211: fix default key symlink creation/cleanup

[Jan Kiszka]

Hi Jiri,

here is the revised version of 'don't symlink empty default keys'. Run-tested
and diff'ed against your repos.

Jan


----------

This gets rid of annoying

wlan0: cannot create symlink to default key

in my syslog with latest rt2x00. The patch takes care to always delete an
existing symlink to the default key before trying to register a new one.
Moreover, it avoids to call ieee80211_key_sysfs_add_default for a NULL key.

Signed-off-by: Jan Kiszka <[EMAIL PROTECTED]>

---
 net/d80211/ieee80211_ioctl.c     |    9 ++++-----
 net/d80211/ieee80211_sysfs_sta.c |    3 ++-
 2 files changed, 6 insertions(+), 6 deletions(-)

Index: linux-dscape/net/d80211/ieee80211_ioctl.c
===================================================================
--- linux-dscape.orig/net/d80211/ieee80211_ioctl.c
+++ linux-dscape/net/d80211/ieee80211_ioctl.c
@@ -627,7 +627,7 @@ static int ieee80211_set_encryption(stru
                }
                kfree(keyconf);
 
-               if (key && sdata->default_key == key) {
+               if (set_tx_key || sdata->default_key == key) {
                        ieee80211_key_sysfs_remove_default(sdata);
                        sdata->default_key = NULL;
                }
@@ -671,7 +671,7 @@ static int ieee80211_set_encryption(stru
                        }
                }
 
-               if (old_key && sdata->default_key == old_key) {
+               if (set_tx_key || sdata->default_key == old_key) {
                        ieee80211_key_sysfs_remove_default(sdata);
                        sdata->default_key = NULL;
                }
@@ -698,7 +698,7 @@ static int ieee80211_set_encryption(stru
 
        if (set_tx_key || (!sta && !sdata->default_key && key)) {
                sdata->default_key = key;
-               if (ieee80211_key_sysfs_add_default(sdata))
+               if (key && ieee80211_key_sysfs_add_default(sdata))
                        printk(KERN_WARNING "%s: cannot create symlink to "
                               "default key\n", dev->name);
                if (local->ops->set_key_idx &&
@@ -2892,8 +2892,7 @@ static int ieee80211_ioctl_siwencode(str
        else if (erq->length == 0) {
                /* No key data - just set the default TX key index */
                if (sdata->default_key != sdata->keys[idx]) {
-                       if (sdata->default_key)
-                               ieee80211_key_sysfs_remove_default(sdata);
+                       ieee80211_key_sysfs_remove_default(sdata);
                        sdata->default_key = sdata->keys[idx];
                        if (sdata->default_key)
                                ieee80211_key_sysfs_add_default(sdata);
Index: linux-dscape/net/d80211/ieee80211_sysfs_sta.c
===================================================================
--- linux-dscape.orig/net/d80211/ieee80211_sysfs_sta.c
+++ linux-dscape/net/d80211/ieee80211_sysfs_sta.c
@@ -433,5 +433,6 @@ int ieee80211_key_sysfs_add_default(stru
 
 void ieee80211_key_sysfs_remove_default(struct ieee80211_sub_if_data *sdata)
 {
-       sysfs_remove_link(&sdata->key_kset.kobj, "default");
+       if (sdata->default_key)
+               sysfs_remove_link(&sdata->key_kset.kobj, "default");
 }

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