ipw2x00: Adding active 11a wireless band support for Intel 2915abg (ZZJ:Japan)
PATCH 1/1 ipw2x00: Adding active 11a wireless band support for Intel 2915abg (ZZJ:Japan)
Hi all,
Current ipw2200 driver cannot establish 11a wireless connection using 2915abg device with countrycode ZZJ(for Japan), because of mismatch of wireless band definition.
Current wireless band definition at section "ZZJ" in ipw2200.c (at /usr/src/linux-3.4/drivers/net/wireless/ipw2x00) is J52 and this wireless band was already discontinued in Japan.
Definition about J52 should be replaced to active W52 band. And new definition about W53 and W56 band should be added to this section.
Because ipw2000 driver was already discontinued and Intel provides no support anymore, I propose this offer to this mailinglist.
More detailed information about J52,W52,W53 and W56 is below:
========
[J52]
34ch: 5170MHz
38ch: 5190MHz
42ch: 5210MHz
46ch: 5230MHz
* Japanese local band for 11a wireless connection.
* This band was defined by Soumushou (Ministry of Internal Affairs and Communications) in Japan before WRC-03 and had been making us irritated.
* Each channel have 10MHz offset from worldwide standard channels.
* This band was discontinued at 2008/05/31 and further use was forbidden.
[W52]
36ch: 5180MHz
40ch: 5200MHz
44ch: 5220MHz
48ch: 5240MHz
* Wireless band having compatibility with world wide standard 11a channels.
* This band was launched at 2005/05/16 in Japan.
[W53]
52ch: 5260MHz
56ch: 5280MHz
60ch: 5300MHz
64ch: 5320MHz
* Wireless band having compatibility with world wide standard 11a channels.
* This band was launched at 2005/05/16 in Japan (same as W52).
* This band needs DFS (Dynamic Frequency Selection) and TPC (Transmission Power Control) function for AP, passive scan function for client in Japan.
[W56]
100ch: 5500MHz
104ch: 5520MHz
108ch: 5540MHz
112ch: 5560MHz
116ch: 5580MHz
120ch: 5600MHz
124ch: 5620MHz
128ch: 5640MHz
132ch: 5660MHz
136ch: 5680MHz
140ch: 5700MHz
* Wireless band having compatibility with world wide standard 11a channels.
* This band was launched at 2007/01 in Japan.
* This band needs DFS (Dynamic Frequency Selection) and TPC (Transmission Power Control) function for AP, passive scan function for client in Japan.
========
Thank you for your consideration.
---
drivers/net/wireless/ipw2x00/ipw2200.c +21 -4
@@ -11157,7 +11157,7 @@ static const struct libipw_geo ipw_geos[] = { {5700, 140, LIBIPW_CH_PASSIVE_ONLY}}, }, - {/* Custom Japan */ + {/* Custom Japan Modified */ "ZZJ", .bg_channels = 14, .bg = {{2412, 1}, {2417, 2}, {2422, 3},
@@ -11165,9 +11165,26 @@ static const struct libipw_geo ipw_geos[] = { {2442, 7}, {2447, 8}, {2452, 9}, {2457, 10}, {2462, 11}, {2467, 12}, {2472, 13}, {2484, 14, LIBIPW_CH_B_ONLY}}, - .a_channels = 4, - .a = {{5170, 34}, {5190, 38}, - {5210, 42}, {5230, 46}}, + .a_channels = 19, + .a = {{5180, 36}, + {5200, 40}, + {5220, 44}, + {5240, 48}, + {5260, 52, LIBIPW_CH_PASSIVE_ONLY}, + {5280, 56, LIBIPW_CH_PASSIVE_ONLY}, + {5300, 60, LIBIPW_CH_PASSIVE_ONLY}, + {5320, 64, LIBIPW_CH_PASSIVE_ONLY}, + {5500, 100, LIBIPW_CH_PASSIVE_ONLY}, + {5520, 104, LIBIPW_CH_PASSIVE_ONLY}, + {5540, 108, LIBIPW_CH_PASSIVE_ONLY}, + {5560, 112, LIBIPW_CH_PASSIVE_ONLY}, + {5580, 116, LIBIPW_CH_PASSIVE_ONLY}, + {5600, 120, LIBIPW_CH_PASSIVE_ONLY}, + {5620, 124, LIBIPW_CH_PASSIVE_ONLY}, + {5640, 128, LIBIPW_CH_PASSIVE_ONLY}, + {5660, 132, LIBIPW_CH_PASSIVE_ONLY}, + {5680, 136, LIBIPW_CH_PASSIVE_ONLY}, + {5700, 140, LIBIPW_CH_PASSIVE_ONLY}}, }, { /* Rest of World */
Quoted 16 lines · Kei Kishiro
Hi all,
Current ipw2200 driver cannot establish 11a wireless connection using 2915abg device with countrycode ZZJ(for Japan), because of mismatch of wireless band definition.
Current wireless band definition at section "ZZJ" in
ipw2200.c(at/usr/src/linux-3.4/drivers/net/wireless/ipw2x00) is J52 and this wireless band was already discontinued in Japan.Definition about J52 should be replaced to active W52 band. And new definition about W53 and W56 band should be added to this section.
Quoted 6 lines
Because ipw2000 driver was already discontinued and Intel provides no support anymore, I propose this offer to this mailinglist.
More detailed information about J52,W52,W53 and W56 is below:
I'm setting aside the patch posting niceties for now -- if we decide that this patch is acceptable then we can provide further guidance on that later...
Given the regulatory nature of this patch, I invited Intel to comment (in bugzilla) as to the appropriateness. Unfortunately, Intel abandoned this driver long ago. Hence, they refused to provide any guidance on this patch.
My opinion is that at least the first four channel changes are minor and they would seem to bring operators of these devices into compliance with current regulations. I would think that merging at least that part of the patch is for the best. If we are truly paranoid, perhaps the 4th channel could be left out since it extends beyond the original operating range.
The other 15 channels seem more problematic, since no certification over that range would have been done with the devices in question sold in Japan.
Thoughts?
John
Quoted 117 lines
========
[J52]34ch: 5170MHz
38ch: 5190MHz
42ch: 5210MHz
46ch: 5230MHz* Japanese local band for 11a wireless connection.
* This band was defined by Soumushou (Ministry of Internal Affairs and Communications) in Japan before WRC-03 and had been making us irritated.
* Each channel have 10MHz offset from worldwide standard channels.
* This band was discontinued at 2008/05/31 and further use was forbidden.[W52]
36ch: 5180MHz
40ch: 5200MHz
44ch: 5220MHz
48ch: 5240MHz* Wireless band having compatibility with world wide standard 11a channels.
* This band was launched at 2005/05/16 in Japan.[W53]
52ch: 5260MHz
56ch: 5280MHz
60ch: 5300MHz
64ch: 5320MHz* Wireless band having compatibility with world wide standard 11a channels.
* This band was launched at 2005/05/16 in Japan (same as W52).
* This band needs DFS (Dynamic Frequency Selection) and TPC (Transmission Power Control) function for AP, passive scan function for client in Japan.[W56]
100ch: 5500MHz
104ch: 5520MHz
108ch: 5540MHz
112ch: 5560MHz
116ch: 5580MHz
120ch: 5600MHz
124ch: 5620MHz
128ch: 5640MHz
132ch: 5660MHz
136ch: 5680MHz
140ch: 5700MHz* Wireless band having compatibility with world wide standard 11a channels.
* This band was launched at 2007/01 in Japan.
* This band needs DFS (Dynamic Frequency Selection) and TPC (Transmission Power Control) function for AP, passive scan function for client in Japan.========
Thank you for your consideration.
Signed-off-by Kei Kishiro <[email protected]>---
drivers/net/wireless/ipw2x00/ipw2200.c +21
-5@@ -11157,7 +11157,7 @@ static const struct libipw_geo ipw_geos[] = { {5700, 140, LIBIPW_CH_PASSIVE_ONLY}}, }, - {/* Custom Japan */ + {/* Custom Japan Modified */ "ZZJ", .bg_channels = 14, .bg = {{2412, 1}, {2417, 2}, {2422, 3},@@ -11165,9 +11165,26 @@ static const struct libipw_geo ipw_geos[] = { {2442, 7}, {2447, 8}, {2452, 9}, {2457, 10}, {2462, 11}, {2467, 12}, {2472, 13}, {2484, 14, LIBIPW_CH_B_ONLY}}, - .a_channels = 4, - .a = {{5170, 34}, {5190, 38}, - {5210, 42}, {5230, 46}}, + .a_channels = 19, + .a = {{5180, 36}, + {5200, 40}, + {5220, 44}, + {5240, 48}, + {5260, 52, LIBIPW_CH_PASSIVE_ONLY}, + {5280, 56, LIBIPW_CH_PASSIVE_ONLY}, + {5300, 60, LIBIPW_CH_PASSIVE_ONLY}, + {5320, 64, LIBIPW_CH_PASSIVE_ONLY}, + {5500, 100, LIBIPW_CH_PASSIVE_ONLY}, + {5520, 104, LIBIPW_CH_PASSIVE_ONLY}, + {5540, 108, LIBIPW_CH_PASSIVE_ONLY}, + {5560, 112, LIBIPW_CH_PASSIVE_ONLY}, + {5580, 116, LIBIPW_CH_PASSIVE_ONLY}, + {5600, 120, LIBIPW_CH_PASSIVE_ONLY}, + {5620, 124, LIBIPW_CH_PASSIVE_ONLY}, + {5640, 128, LIBIPW_CH_PASSIVE_ONLY}, + {5660, 132, LIBIPW_CH_PASSIVE_ONLY}, + {5680, 136, LIBIPW_CH_PASSIVE_ONLY}, + {5700, 140, LIBIPW_CH_PASSIVE_ONLY}}, }, { /* Rest of World */ --To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to [email protected]
More majordomo info at http://vger.kernel.org/majordomo-info.html
Signature · 2 lines
John W. Linville Someday the world will need a hero, and you [email protected] might be all we have. Be ready.