* [ath9k-devel] Fully control ethernet frame @ 2016-07-08 7:08 김상혁 2016-07-08 17:46 ` Adrian Chadd 0 siblings, 1 reply; 6+ messages in thread From: 김상혁 @ 2016-07-08 7:08 UTC (permalink / raw) To: ath9k-devel Hi all, I want to make corrupted packet by wrong CRC/FCS I have two questions. 1) Can I handle CRC/FCS when ethernet frame be made at Tx ? 2-1) If can, how can I ? or where is related source? 2-2) If can?t, is there any way to control CRC/FCS at Tx ? Thanks. ^ permalink raw reply [flat|nested] 6+ messages in thread
* [ath9k-devel] Fully control ethernet frame 2016-07-08 7:08 [ath9k-devel] Fully control ethernet frame 김상혁 @ 2016-07-08 17:46 ` Adrian Chadd 2016-07-08 17:55 ` Ben Greear 0 siblings, 1 reply; 6+ messages in thread From: Adrian Chadd @ 2016-07-08 17:46 UTC (permalink / raw) To: ath9k-devel hi, There's a transmit descriptor bit, AR_CorruptFCS, which you can set and it will negate the FCS so it always fails. Look in the ar9002_mac.c / ar9003_mac.c where NoAck is set; i think AR_CorruptFCS should also be set in that (ctl1 for ar9002 and below, ctl12 for ar9003) -a On 8 July 2016 at 00:08, ??? <tkdgur7896@gmail.com> wrote: > Hi all, > > I want to make corrupted packet by wrong CRC/FCS > > I have two questions. > > 1) Can I handle CRC/FCS when ethernet frame be made at Tx ? > > 2-1) If can, how can I ? or where is related source? > > 2-2) If can?t, is there any way to control CRC/FCS at Tx ? > > Thanks. > _______________________________________________ > ath9k-devel mailing list > ath9k-devel at lists.ath9k.org > https://lists.ath9k.org/mailman/listinfo/ath9k-devel ^ permalink raw reply [flat|nested] 6+ messages in thread
* [ath9k-devel] Fully control ethernet frame 2016-07-08 17:46 ` Adrian Chadd @ 2016-07-08 17:55 ` Ben Greear 2016-07-08 23:56 ` Adrian Chadd 0 siblings, 1 reply; 6+ messages in thread From: Ben Greear @ 2016-07-08 17:55 UTC (permalink / raw) To: ath9k-devel On 07/08/2016 10:46 AM, Adrian Chadd wrote: > hi, > > There's a transmit descriptor bit, AR_CorruptFCS, which you can set > and it will negate the FCS so it always fails. > > Look in the ar9002_mac.c / ar9003_mac.c where NoAck is set; i think > AR_CorruptFCS should also be set in that (ctl1 for ar9002 and below, > ctl12 for ar9003) Neat. e1000e (I think?) and some other drivers I mucked with long ago have the ability to accept FCS from user-space. If someone adds that same support to ath9k then that would make applications supporting this API able to work on ath9k devices as well... Thanks, Ben > > > -a > > > On 8 July 2016 at 00:08, ??? <tkdgur7896@gmail.com> wrote: >> Hi all, >> >> I want to make corrupted packet by wrong CRC/FCS >> >> I have two questions. >> >> 1) Can I handle CRC/FCS when ethernet frame be made at Tx ? >> >> 2-1) If can, how can I ? or where is related source? >> >> 2-2) If can?t, is there any way to control CRC/FCS at Tx ? >> >> Thanks. >> _______________________________________________ >> ath9k-devel mailing list >> ath9k-devel at lists.ath9k.org >> https://lists.ath9k.org/mailman/listinfo/ath9k-devel > _______________________________________________ > ath9k-devel mailing list > ath9k-devel at lists.ath9k.org > https://lists.ath9k.org/mailman/listinfo/ath9k-devel > -- Ben Greear <greearb@candelatech.com> Candela Technologies Inc http://www.candelatech.com ^ permalink raw reply [flat|nested] 6+ messages in thread
* [ath9k-devel] Fully control ethernet frame 2016-07-08 17:55 ` Ben Greear @ 2016-07-08 23:56 ` Adrian Chadd 2016-07-13 8:52 ` SangHyuk Kim 0 siblings, 1 reply; 6+ messages in thread From: Adrian Chadd @ 2016-07-08 23:56 UTC (permalink / raw) To: ath9k-devel On 8 July 2016 at 10:55, Ben Greear <greearb@candelatech.com> wrote: > On 07/08/2016 10:46 AM, Adrian Chadd wrote: >> >> hi, >> >> There's a transmit descriptor bit, AR_CorruptFCS, which you can set >> and it will negate the FCS so it always fails. >> >> Look in the ar9002_mac.c / ar9003_mac.c where NoAck is set; i think >> AR_CorruptFCS should also be set in that (ctl1 for ar9002 and below, >> ctl12 for ar9003) > > > Neat. > > e1000e (I think?) and some other drivers I mucked with long ago have > the ability to accept FCS from user-space. If someone adds that > same support to ath9k then that would make applications supporting > this API able to work on ath9k devices as well... I don't know if we can disable hardware FCS calculation. :-) It looks like we can only make it be corrupted, for testing. -adrian > > Thanks, > Ben > > >> >> >> -a >> >> >> On 8 July 2016 at 00:08, ??? <tkdgur7896@gmail.com> wrote: >>> >>> Hi all, >>> >>> I want to make corrupted packet by wrong CRC/FCS >>> >>> I have two questions. >>> >>> 1) Can I handle CRC/FCS when ethernet frame be made at Tx ? >>> >>> 2-1) If can, how can I ? or where is related source? >>> >>> 2-2) If can?t, is there any way to control CRC/FCS at Tx ? >>> >>> Thanks. >>> _______________________________________________ >>> ath9k-devel mailing list >>> ath9k-devel at lists.ath9k.org >>> https://lists.ath9k.org/mailman/listinfo/ath9k-devel >> >> _______________________________________________ >> ath9k-devel mailing list >> ath9k-devel at lists.ath9k.org >> https://lists.ath9k.org/mailman/listinfo/ath9k-devel >> > > > -- > Ben Greear <greearb@candelatech.com> > Candela Technologies Inc http://www.candelatech.com > ^ permalink raw reply [flat|nested] 6+ messages in thread
* [ath9k-devel] Fully control ethernet frame 2016-07-08 23:56 ` Adrian Chadd @ 2016-07-13 8:52 ` SangHyuk Kim 2016-07-13 20:45 ` Adrian Chadd 0 siblings, 1 reply; 6+ messages in thread From: SangHyuk Kim @ 2016-07-13 8:52 UTC (permalink / raw) To: ath9k-devel Dear Adrian. Thanks for your reply. I could check the point you mentioned, but when I tried to modify source code(ar9002.c) and rebuild it didn't any effects. And I realized that my wifi usb uses ath9k_htc things. So I'm researching about htc_*.c things, but I can't find any crew clue. My new questions : 1) How can I corrupt CRC/FCS using htc driver product 2) Also, what is the 'txok' variable in htc_drv_txrx.c : [image: ?? ??? 1] Any replies, thanks. 2016-07-09 8:56 GMT+09:00 Adrian Chadd <adrian@freebsd.org>: > On 8 July 2016 at 10:55, Ben Greear <greearb@candelatech.com> wrote: > > On 07/08/2016 10:46 AM, Adrian Chadd wrote: > >> > >> hi, > >> > >> There's a transmit descriptor bit, AR_CorruptFCS, which you can set > >> and it will negate the FCS so it always fails. > >> > >> Look in the ar9002_mac.c / ar9003_mac.c where NoAck is set; i think > >> AR_CorruptFCS should also be set in that (ctl1 for ar9002 and below, > >> ctl12 for ar9003) > > > > > > Neat. > > > > e1000e (I think?) and some other drivers I mucked with long ago have > > the ability to accept FCS from user-space. If someone adds that > > same support to ath9k then that would make applications supporting > > this API able to work on ath9k devices as well... > > I don't know if we can disable hardware FCS calculation. :-) It looks > like we can only make it be corrupted, for testing. > > > > -adrian > > > > > Thanks, > > Ben > > > > > >> > >> > >> -a > >> > >> > >> On 8 July 2016 at 00:08, ??? <tkdgur7896@gmail.com> wrote: > >>> > >>> Hi all, > >>> > >>> I want to make corrupted packet by wrong CRC/FCS > >>> > >>> I have two questions. > >>> > >>> 1) Can I handle CRC/FCS when ethernet frame be made at Tx ? > >>> > >>> 2-1) If can, how can I ? or where is related source? > >>> > >>> 2-2) If can?t, is there any way to control CRC/FCS at Tx ? > >>> > >>> Thanks. > >>> _______________________________________________ > >>> ath9k-devel mailing list > >>> ath9k-devel at lists.ath9k.org > >>> https://lists.ath9k.org/mailman/listinfo/ath9k-devel > >> > >> _______________________________________________ > >> ath9k-devel mailing list > >> ath9k-devel at lists.ath9k.org > >> https://lists.ath9k.org/mailman/listinfo/ath9k-devel > >> > > > > > > -- > > Ben Greear <greearb@candelatech.com> > > Candela Technologies Inc http://www.candelatech.com > > > -------------- next part -------------- An HTML attachment was scrubbed... URL: http://lists.ath9k.org/pipermail/ath9k-devel/attachments/20160713/29e0cf54/attachment-0001.htm -------------- next part -------------- A non-text attachment was scrubbed... Name: image.png Type: image/png Size: 108875 bytes Desc: not available Url : http://lists.ath9k.org/pipermail/ath9k-devel/attachments/20160713/29e0cf54/attachment-0001.png ^ permalink raw reply [flat|nested] 6+ messages in thread
* [ath9k-devel] Fully control ethernet frame 2016-07-13 8:52 ` SangHyuk Kim @ 2016-07-13 20:45 ` Adrian Chadd 0 siblings, 0 replies; 6+ messages in thread From: Adrian Chadd @ 2016-07-13 20:45 UTC (permalink / raw) To: ath9k-devel hi, for ath9k_htc devices you have to hack the TX descriptor setup in the firmware, rather than in ath9k_htc. -adrian On 13 July 2016 at 01:52, SangHyuk Kim <tkdgur7896@gmail.com> wrote: > Dear Adrian. > > Thanks for your reply. > > I could check the point you mentioned, but when I tried to modify source > code(ar9002.c) and rebuild it didn't any effects. > > And I realized that my wifi usb uses ath9k_htc things. > > So I'm researching about htc_*.c things, but I can't find any crew clue. > > My new questions : > > 1) How can I corrupt CRC/FCS using htc driver product > 2) Also, what is the 'txok' variable in htc_drv_txrx.c : > > [image: ?? ??? 1] > > Any replies, thanks. > > 2016-07-09 8:56 GMT+09:00 Adrian Chadd <adrian@freebsd.org>: > >> On 8 July 2016 at 10:55, Ben Greear <greearb@candelatech.com> wrote: >> > On 07/08/2016 10:46 AM, Adrian Chadd wrote: >> >> >> >> hi, >> >> >> >> There's a transmit descriptor bit, AR_CorruptFCS, which you can set >> >> and it will negate the FCS so it always fails. >> >> >> >> Look in the ar9002_mac.c / ar9003_mac.c where NoAck is set; i think >> >> AR_CorruptFCS should also be set in that (ctl1 for ar9002 and below, >> >> ctl12 for ar9003) >> > >> > >> > Neat. >> > >> > e1000e (I think?) and some other drivers I mucked with long ago have >> > the ability to accept FCS from user-space. If someone adds that >> > same support to ath9k then that would make applications supporting >> > this API able to work on ath9k devices as well... >> >> I don't know if we can disable hardware FCS calculation. :-) It looks >> like we can only make it be corrupted, for testing. >> >> >> >> -adrian >> >> > >> > Thanks, >> > Ben >> > >> > >> >> >> >> >> >> -a >> >> >> >> >> >> On 8 July 2016 at 00:08, ??? <tkdgur7896@gmail.com> wrote: >> >>> >> >>> Hi all, >> >>> >> >>> I want to make corrupted packet by wrong CRC/FCS >> >>> >> >>> I have two questions. >> >>> >> >>> 1) Can I handle CRC/FCS when ethernet frame be made at Tx ? >> >>> >> >>> 2-1) If can, how can I ? or where is related source? >> >>> >> >>> 2-2) If can?t, is there any way to control CRC/FCS at Tx ? >> >>> >> >>> Thanks. >> >>> _______________________________________________ >> >>> ath9k-devel mailing list >> >>> ath9k-devel at lists.ath9k.org >> >>> https://lists.ath9k.org/mailman/listinfo/ath9k-devel >> >> >> >> _______________________________________________ >> >> ath9k-devel mailing list >> >> ath9k-devel at lists.ath9k.org >> >> https://lists.ath9k.org/mailman/listinfo/ath9k-devel >> >> >> > >> > >> > -- >> > Ben Greear <greearb@candelatech.com> >> > Candela Technologies Inc http://www.candelatech.com >> > >> > > -------------- next part -------------- An HTML attachment was scrubbed... URL: http://lists.ath9k.org/pipermail/ath9k-devel/attachments/20160713/a9d53913/attachment-0001.htm -------------- next part -------------- A non-text attachment was scrubbed... Name: image.png Type: image/png Size: 108875 bytes Desc: not available Url : http://lists.ath9k.org/pipermail/ath9k-devel/attachments/20160713/a9d53913/attachment-0001.png ^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2016-07-13 20:45 UTC | newest] Thread overview: 6+ messages (download: mbox.gz follow: Atom feed -- links below jump to the message on this page -- 2016-07-08 7:08 [ath9k-devel] Fully control ethernet frame 김상혁 2016-07-08 17:46 ` Adrian Chadd 2016-07-08 17:55 ` Ben Greear 2016-07-08 23:56 ` Adrian Chadd 2016-07-13 8:52 ` SangHyuk Kim 2016-07-13 20:45 ` Adrian Chadd
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