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cd93662137
When n_gsm config "initiator=0",as requester,gsmld will receive dlci
SABM and DISC control command frame,the CR bit value should be 1.
If cr == 0,it will goto invalid,and it can't send UA response
frame and open requster dlci.
case SABM|PF:
- if (cr == 0)
+ if (cr == 0) {
+ printk("gsm_queue invalid\n");
goto invalid;
+ }
Example,gsmld receive dlc0 SABM command frame:f9 03 3f 01 1c f9
but gsmld goto invalid.
Kernel test log:
[ 101.794705] c0 gsmld_receive: 00000000: f9 03 3f 01 1c f9
[ 101.803341] c0 <-- 0) C: SABM(P)
[ 101.811371] c0 gsm_queue invalid
Signed-off-by: Zhenguo Zhao <Zhenguo.Zhao1@unisoc.com>
Link: https://lore.kernel.org/r/1629461872-26965-2-git-send-email-zhenguo6858@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.