[LEDE-DEV] Help me understand ubus extensions via C api
Hi all,
I want to customize a small feature in how hostapd responds to probe
request and I was looking at
https://github.com/lede-project/source/blob/master/package/network/services/hostapd/src/src/ap/ubus.c
Please help me understand how it works? for example when I call `ubus
call hostapd.wlan0-1 del_client "{}" what happens?
I know that ubus_cli
(http://git.openwrt.org/?p=project/ubus.git;a=blob;f=cli.c;h=19ccbb5093ce4c326010a9b2f504d7cd50798275;hb=HEAD)
parses the input but how does ubus call the functions inside the above
file (the ubus.c, ubus hostapd extension)?
I see that there is this function, but how is that called
static int hostapd_bss_del_client(struct ubus_context *ctx, struct
ubus_object *obj, struct ubus_request_data *req, const char *method,
struct blob_attr *msg);
Thank you!
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Re: [LEDE-DEV] Help me understand ubus extensions via C api
Thanks Alexandru!
That was very helpful. Now I have a better understanding of the ubus structure.
Few more questions:
- when/where does this ubus.c file (executable?) run?
- how these functions used? when are they called? starting from line
42 to line 47
(https://github.com/lede-project/source/blob/master/package/network/services/hostapd/src/src/ap/ubus.h#L42)
Thanks again.
On Wed, Jul 5, 2017 at 11:54 PM, Alexandru Ardelean
wrote:
> On Thu, Jul 6, 2017 at 4:31 AM, Carlito Nueno wrote:
>> Hi all,
>>
>> I want to customize a small feature in how hostapd responds to probe
>> request and I was looking at
>> https://github.com/lede-project/source/blob/master/package/network/services/hostapd/src/src/ap/ubus.c
>>
>> Please help me understand how it works? for example when I call `ubus
>> call hostapd.wlan0-1 del_client "{}" what happens?
>
> the `ubus` cli will talk to ubusd
> ubusd is the broker [or hub] for all things ubus between all processes
> [that register with ubus[d] ]
>
> hostapd has registered the `hostapd.wlan0-1` ubus object here
> https://github.com/lede-project/source/blob/master/package/network/services/hostapd/src/src/ap/ubus.c#L457
> via the ubus_add_object()
>
> all registration to ubusd is done via libubus, which abstracts a lot
> of the stuff to connect/talk to ubusd
> all that you need to use [in a daemon/process with ubus] is in
> libubus.h ; that header is exported at build time for other modules to
> use
> http://git.openwrt.org/?p=project/ubus.git;a=blob;f=libubus.h;h=4e45cb620a28befe23c27d3b8dc7eb1a1d12fb1a;hb=HEAD
>
> it's important that all operations to ubus[d] be done on a
> ubus_context object, which is a wrapper struct for a socket FD, some
> buffer data, and other stuff
>
> [ well, this was mostly ubus internals [in case it interests you ] ]
>
>>
>> I know that ubus_cli
>> (http://git.openwrt.org/?p=project/ubus.git;a=blob;f=cli.c;h=19ccbb5093ce4c326010a9b2f504d7cd50798275;hb=HEAD)
>> parses the input but how does ubus call the functions inside the above
>> file (the ubus.c, ubus hostapd extension)?
>
> the ubus cli tool uses libubus
> but the code for cli, may not be a sufficient example to do other
> operations [like in hostapd ]
>
>>
>> I see that there is this function, but how is that called
>>
>> static int hostapd_bss_del_client(struct ubus_context *ctx, struct
>> ubus_object *obj, struct ubus_request_data *req, const char *method,
>> struct blob_attr *msg);
>>
>
> Coming back to your "I want to customize a small feature in how hostapd"
> I think that all you might need to do is register a new function here:
> https://github.com/lede-project/source/blob/master/package/network/services/hostapd/src/src/ap/ubus.c#L419
> or extend an existing one.
>
> As I mentioned, the ubus cli talks to ubusd.
> When doing `ubus call hostapd.wlan0-1 del_client "{}"` , this
> means that hostapd has already registered a ` hostapd.wlan0-1` with
> ubusd
> When you call "del_client", the hostapd_bss_del_client() callback will
> be called [ubus cli will ask ubusd to access del_client from
> hostapd.wlan0-1 ] , but before that, the `del_policy` object will be
> used to validate the message format.
> [ You may have noticed that some callbacks are UBUS_METHOD_NOARG() and
> some are UBUS_METHOD() ; the ones without a policy arg will get
> processed without any msg format validation ]
>
>>
>> Thank you!
>>
>
> Maybe this information was not too well structured.
> But hope it helps.
>
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[LEDE-DEV] compile hostapd/wpa_supplicant with mesh and sae options
Hi all, I am trying to compile hostapd/wpa_supplicant with CONFIG_MESH=y and CONFIG_SAE=y. I am using sdk to compile an ipk. I download the hostapd source and added those config options to wpa_supplicant-full.config. I have this in my sdk conf file: # CONFIG_PACKAGE_wpad-mini is not set CONFIG_PACKAGE_wpad=y But during compilation I see a lot of these kind of errors: sae.c:(.text.sae_write_commit+0x66): undefined reference to `crypto_bignum_to_bin' then log shows: Makefile:402: recipe for target '/home/ubuntu/sdk-17.01.4/build_dir/target-mips_24kc_musl-1.1.16/hostapd-wpad-full/hostapd-2016-12-19-ad02e79d/.built' failed make[2]: *** [/home/ubuntu/sdk-17.01.4/build_dir/target-mips_24kc_musl-1.1.16/hostapd-wpad-full/hostapd-2016-12-19-ad02e79d/.built] Error 1 Any advice? Thanks! ___ Lede-dev mailing list Lede-dev@lists.infradead.org http://lists.infradead.org/mailman/listinfo/lede-dev
Re: [LEDE-DEV] compile hostapd/wpa_supplicant with mesh and sae options
I need WPA2 Enterprise and I also want to try / implement 802.11r. I am attaching the log errors, wap_supplicant.conf, part of wireless config: https://gist.github.com/ironpillow/e0779261f6d045a6883f5dbd6ae81c1f I don't get the above errors when I use wpad-mesh but when I use wpad (full), wpa_supplicant doesn't start because it fails to read or parse the conf file. On Sat, Dec 9, 2017 at 7:24 AM, Felix Fietkau wrote: > On 2017-12-09 14:36, Carlito Nueno wrote: >> Hi all, >> >> I am trying to compile hostapd/wpa_supplicant with CONFIG_MESH=y and >> CONFIG_SAE=y. >> >> I am using sdk to compile an ipk. I download the hostapd source and >> added those config options to wpa_supplicant-full.config. >> >> I have this in my sdk conf file: >> >> # CONFIG_PACKAGE_wpad-mini is not set >> CONFIG_PACKAGE_wpad=y >> >> But during compilation I see a lot of these kind of errors: >> >> sae.c:(.text.sae_write_commit+0x66): undefined reference to >> `crypto_bignum_to_bin' > Does simply using the wpad-mesh package not already give you what you need? > > - Felix ___ Lede-dev mailing list Lede-dev@lists.infradead.org http://lists.infradead.org/mailman/listinfo/lede-dev
Re: [LEDE-DEV] compile hostapd/wpa_supplicant with mesh and sae options
Sorry, clarification: "I don't get above errors" meaning, I don't get the errors show in the gist link I posted; errors regarding reading and parsing wpa_supplicant conf file. Thanks On Sat, Dec 9, 2017 at 12:51 PM, Carlito Nueno wrote: > I need WPA2 Enterprise and I also want to try / implement 802.11r. > > I am attaching the log errors, wap_supplicant.conf, part of wireless > config: https://gist.github.com/ironpillow/e0779261f6d045a6883f5dbd6ae81c1f > > I don't get the above errors when I use wpad-mesh but when I use wpad > (full), wpa_supplicant doesn't start because it fails to read or parse > the conf file. > > > On Sat, Dec 9, 2017 at 7:24 AM, Felix Fietkau wrote: >> On 2017-12-09 14:36, Carlito Nueno wrote: >>> Hi all, >>> >>> I am trying to compile hostapd/wpa_supplicant with CONFIG_MESH=y and >>> CONFIG_SAE=y. >>> >>> I am using sdk to compile an ipk. I download the hostapd source and >>> added those config options to wpa_supplicant-full.config. >>> >>> I have this in my sdk conf file: >>> >>> # CONFIG_PACKAGE_wpad-mini is not set >>> CONFIG_PACKAGE_wpad=y >>> >>> But during compilation I see a lot of these kind of errors: >>> >>> sae.c:(.text.sae_write_commit+0x66): undefined reference to >>> `crypto_bignum_to_bin' >> Does simply using the wpad-mesh package not already give you what you need? >> >> - Felix ___ Lede-dev mailing list Lede-dev@lists.infradead.org http://lists.infradead.org/mailman/listinfo/lede-dev
Re: [LEDE-DEV] compile hostapd/wpa_supplicant with mesh and sae options
I am testing with wpad-mesh and nodes are connecting and I can ping each node, but logread shows below notice ONLY when mesh iface has encryption on. Mon Dec 11 02:54:38 2017 daemon.notice hostapd: handle_probe_req: send failed Mon Dec 11 02:54:38 2017 daemon.notice hostapd: handle_probe_req: send failed On Sun, Dec 10, 2017 at 11:20 AM, Carlito Nueno wrote: > Thanks! I’ll give it a go and report back. > > On Sunday, December 10, 2017, Felix Fietkau wrote: >> >> On 2017-12-10 20:03, Carlito Nueno wrote: >> > So wpad-mesh can do WPA2 enterprise, EAP and radius? I thought it was >> > like wpad-mini plus 80211s features. >> It's like wpad + 802.11s, so it should be able to do what you need. >> >> - Felix ___ Lede-dev mailing list Lede-dev@lists.infradead.org http://lists.infradead.org/mailman/listinfo/lede-dev
Re: [LEDE-DEV] compile hostapd/wpa_supplicant with mesh and sae options
I just noticed that when mesh is enabled on wlan0, the ap part does
not work. wlan0-ap does not broadcast ssid.
this is using the wpad-mesh package.
config wifi-iface 'wlan0_ap_radio0'
option mode 'ap'
option device 'radio0'
option network 'lan'
option ifname 'wlan0-ap'
option ssid 'mssid'
option encryption 'psk2+aes'
option key 'passwd'
config wifi-iface 'wlan0_mesh_radio0'
option mode 'mesh'
option device 'radio0'
option network 'wlan0_mesh_if'
option ifname 'wlan0-mesh'
option mesh_id 'mmesh'
option encryption 'psk2+aes'
option key 'mpasswd'
On Sun, Dec 10, 2017 at 9:15 PM, Carlito Nueno wrote:
> I am testing with wpad-mesh and nodes are connecting and I can ping
> each node, but logread shows below notice ONLY when mesh iface has
> encryption on.
>
> Mon Dec 11 02:54:38 2017 daemon.notice hostapd: handle_probe_req: send failed
> Mon Dec 11 02:54:38 2017 daemon.notice hostapd: handle_probe_req: send failed
>
> On Sun, Dec 10, 2017 at 11:20 AM, Carlito Nueno
> wrote:
>> Thanks! I’ll give it a go and report back.
>>
>> On Sunday, December 10, 2017, Felix Fietkau wrote:
>>>
>>> On 2017-12-10 20:03, Carlito Nueno wrote:
>>> > So wpad-mesh can do WPA2 enterprise, EAP and radius? I thought it was
>>> > like wpad-mini plus 80211s features.
>>> It's like wpad + 802.11s, so it should be able to do what you need.
>>>
>>> - Felix
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Re: [LEDE-DEV] compile hostapd/wpa_supplicant with mesh and sae options
Thanks Sven, I'll compile LEDE master for my router and will test it. On Wed, Dec 13, 2017 at 12:09 AM, Sven Eckelmann wrote: > On Sonntag, 10. Dezember 2017 22:09:30 CET Carlito Nueno wrote: >> I just noticed that when mesh is enabled on wlan0, the ap part does >> not work. wlan0-ap does not broadcast ssid. >> >> this is using the wpad-mesh package. > > You need additional changes to get this working. These were just added to LEDE > master [1]. > > Kind regards, > Sven > > [1] > https://git.lede-project.org/?p=source.git;a=log;h=d91494eedf06ac6b31c1aa9f7172871b16af96c8 ___ Lede-dev mailing list Lede-dev@lists.infradead.org http://lists.infradead.org/mailman/listinfo/lede-dev
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