Hi all,
I know this thread is _long_ over (6 months...) but the airo driver still
doesn't support setting only the temp WEP key. I submitted a patch
back at the end of 2004 (maybe to the wrong list...):
http://marc.theaimsgroup.com/?l=linux-net&m=110203363216571&w=2
My original patch is still (IMHO ;-) the correct solution. The current
xsupplicant has default support for it (it uses IW_ENCODE_TEMP by
default). And my patch does exactly what you (Jean) proposed, so I think
you hopefully agree it's the right thing to do :)
I've included the patch (re-diffed with 2.6.14) at the bottom of the
email. Is it possible to get this patch into the kernel?
Thanks!
>On Tue, May 03, 2005 at 05:34:31PM -0500, [email protected] wrote:
>> Jean,
>>
>> There is no patch to xsupplicant that will work without patching the
>> airo.c driver. The current airo.c driver always disables the MAC before
>> setting the WEP key whether it is temporary or permanent. This is
>> incorrect. When the MAC is disabled the card disassociates causing the
>> whole handshake to start over again.
>
> Yes, I know perfectly. A patch is needed, however I don't
>think your current patch is the most appropriate solution.
>
> The current solution is :
> 1) set perm key -> goes in the eeprom, reset MAC
> 2) set temp key -> not in the eeprom, reset MAC
> o /proc can set (1) and (2)
> o iwconfig can only set (1)
> o xsupplicant always set (1) - broken
>
> You solution is :
> 1) set temp key -> not in the eeprom, not reset MAC
> 2a) set perm key -> goes in the eeprom, reset MAC
> 2b) set perm key -> goes in the eeprom, not reset MAC
> o module parameter select (2a) or (2b)
> o iwconfig can set (2) {default} or (1) {temp keyword}
> o old xsupplicant set (2) - may work, depend on module parameter
> o new xsupplicant set (1) - always work
>
> First, do we know for sure that all Aironet firmware will
>accept to change the perm WEP key without having to reset the MAC ?
>Maybe the Cisco driver does it this way, but it only target the latest
>firware rev, whereas up to know we have included in the driver code
>for very antique firmware rev. I don't have the answer to that one.
> Second, I think that the module parameter is counter
>productive. What we want there is people migrating to the new
>xsupplicant that does the right thing. Also, module parameter is not
>something that can be changed on the fly, and is one more thing to
>configure. We want things to always work, all the time.
>
> What I would think is better long term :
> 1) set temp key -> not in the eeprom, not reset MAC
> 2) set perm key -> goes in the eeprom, reset MAC
> o iwconfig can set (2) {default} or (1) {temp keyword}
> o old xsupplicant set (2) - always broken
> o new xsupplicant set (1) - always work
>
> But, that's only my personal opinion, and you may want to
>check what the new xsupplicant is doing before making the final
>decision.
Here's the patch:
diff -urpN a/drivers/net/wireless/airo.c b/drivers/net/wireless/airo.c
--- a/drivers/net/wireless/airo.c 2005-10-27 20:02:08.000000000 -0400
+++ b/drivers/net/wireless/airo.c 2005-11-02 10:32:25.000000000 -0500
@@ -4059,7 +4059,7 @@ static int PC4500_writerid(struct airo_i
Cmd cmd;
Resp rsp;
- if (test_bit(FLAG_ENABLED, &ai->flags))
+ if (test_bit(FLAG_ENABLED, &ai->flags) && (RID_WEP_TEMP != rid))
printk(KERN_ERR
"%s: MAC should be disabled (rid=%04x)\n",
__FUNCTION__, rid);
@@ -5119,9 +5119,9 @@ static int set_wep_key(struct airo_info
printk(KERN_INFO "Setting key %d\n", index);
}
- disable_MAC(ai, lock);
+ if (perm) disable_MAC(ai, lock);
writeWepKeyRid(ai, &wkr, perm, lock);
- enable_MAC(ai, &rsp, lock);
+ if (perm) enable_MAC(ai, &rsp, lock);
return 0;
}
@@ -6202,6 +6202,8 @@ static int airo_set_encode(struct net_de
{
struct airo_info *local = dev->priv;
CapabilityRid cap_rid; /* Card capability info */
+ int perm = ( dwrq->flags & IW_ENCODE_TEMP ? 0 : 1 );
+ u16 currentAuthType = local->config.authType;
/* Is WEP supported ? */
readCapabilityRid(local, &cap_rid, 1);
@@ -6244,7 +6246,7 @@ static int airo_set_encode(struct net_de
/* Copy the key in the driver */
memcpy(key.key, extra, dwrq->length);
/* Send the key to the card */
- set_wep_key(local, index, key.key, key.len, 1, 1);
+ set_wep_key(local, index, key.key, key.len, perm, 1);
}
/* WE specify that if a valid key is set, encryption
* should be enabled (user may turn it off later)
@@ -6252,13 +6254,12 @@ static int airo_set_encode(struct net_de
if((index == current_index) && (key.len > 0) &&
(local->config.authType == AUTH_OPEN)) {
local->config.authType = AUTH_ENCRYPT;
- set_bit (FLAG_COMMIT, &local->flags);
}
} else {
/* Do we want to just set the transmit key index ? */
int index = (dwrq->flags & IW_ENCODE_INDEX) - 1;
if ((index >= 0) && (index < ((cap_rid.softCap & 0x80)?4:1))) {
- set_wep_key(local, index, NULL, 0, 1, 1);
+ set_wep_key(local, index, NULL, 0, perm, 1);
} else
/* Don't complain if only change the mode */
if(!dwrq->flags & IW_ENCODE_MODE) {
@@ -6273,7 +6274,7 @@ static int airo_set_encode(struct net_de
if(dwrq->flags & IW_ENCODE_OPEN)
local->config.authType = AUTH_ENCRYPT; // Only Wep
/* Commit the changes to flags if needed */
- if(dwrq->flags & IW_ENCODE_MODE)
+ if (local->config.authType != currentAuthType)
set_bit (FLAG_COMMIT, &local->flags);
return -EINPROGRESS; /* Call commit handler */
}
-
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