linux sk_buff resources

Thread Tools Search this Thread
Operating Systems Linux linux sk_buff resources
# 1  
Old 01-17-2008
linux sk_buff resources


I'm trying to build linear sk_buffs, non linear sk_buffs with page frames (nr_frags) and non linear skbuffs with linked list (frag_list) for testing of a kernel module I wrote. Does anyone have any better resources than the API for doing this? Like a guide type thing. The best I've found so far is:

How SKBs work

but that doesn't really go deep enough. I'm not worried about filling the skbuff with any data, just building the actual memory object to a certain size with a certain number of frags attached.

Any help is greatly appreciated,
Best Regards,
Login or Register to Ask a Question

Previous Thread | Next Thread

6 More Discussions You Might Find Interesting

1. UNIX for Advanced & Expert Users

How can I get data in the sk_buff?

Hi, all: In debugging, how can I get the data in a sk_buff? Can printk print them, or which function can get the data? li, kunlun (2 Replies)
Discussion started by: liklstar
2 Replies

2. News, Links, Events and Announcements

Linux online training resources

Dear all, I am preparing the RHCE Linux certification and I need to practise, practise and practise linux administration ...I wold be very pleasen if somebody lists here online training resources that can be used in order to prepare any kind of Linux Certification.. Actualy I am following the... (1 Reply)
Discussion started by: userlinx
1 Replies

3. AIX

The partition keeps the resources

Hello, On a PL1650, with AIX partitions (micropartitionning). When a partition is "Not Actived", the processor and memory resources are not free (display in the HMC) and I can't by DLPAR. The partition keeps the resources. An idea ? Thanks, Trunk. (5 Replies)
Discussion started by: Trunk
5 Replies

4. Programming

C - Freeing resources

I was wondering what is the function in C to free a resource(usually a variable) I know in C# there a Garbage collector, but in c and C++ there are none. I believe in c++ the function is free(); (8 Replies)
Discussion started by: james2432
8 Replies

5. UNIX for Dummies Questions & Answers

Who is using up all of my resources?!

For some reason, I'm having a bit of a brain fart here and cannot think of a simple solution to this problem... We have a samba server installed on one of our Darwin boxes. Someone is doing massive amounts of work through a samba share, and in turn in pegging samba and the box. I can see how... (1 Reply)
Discussion started by: fender177
1 Replies

6. UNIX for Dummies Questions & Answers

Unix Resources

Good morning all! Does any know of any good resources to read up on why people would use Unix, what the weaknesses are of the platform and how it is used! Many thanks: Note: This is for an assignment, I know you are not suppose to ask for help or post assignment questions but all I am... (2 Replies)
Discussion started by: Zeta_Acosta
2 Replies
Login or Register to Ask a Question
pfsinimgmagick(1)					      General Commands Manual						 pfsinimgmagick(1)

pfsinimgmagick - Load images or frames using ImageMagick++ library SYNOPSIS
pfsinimgmagick (<file> [--linear] [--absolute <max_lum>] [--frames <range>] [--skip-missing]) [<file>...] DESCRIPTION
This command can load images or frames in the multitude of image formats supported by the ImageMagick library. This includes but is not limited to: BMP, JPG, PNG, GIF, EPS, TIFF, DPX. See the manual page of ImageMagick for the full list of available formats. pfsinimgmagick reads images or frames from files and writes pfs stream to the Standard Output. The pfs stream is usually piped to another program for further processing. To detect the format automatically based on the extension, use pfsin command. The output of pfsinimgmagick is scaled to 0-1 range, unless '--absolute' option is specified. By default, the 'LUMINANCE' tag is set to 'DISPLAY' contents. Using the '--linear' switch you can force the inverse sRGB transformation to provide linear data. In this case the 'LUMINANCE' tag is set to 'RELATIVE' contents. '--absolute' switch can be used to convert pixels to absolute luminance values. This command handles properly 'alpha' channel (transparency) stored in images. Each file can contain a %d pattern, which is substituted with frame numbers. The pattern has the same syntax as C printf command. For exam- ple, you can use %04d to make the frame number four digit with proceedings zeros. You can select the frames using the following options (the options must be always given after the file name): --frames <range> Range is given in mathlab / octave format: startframe:step:endframe Frame numbers start with startframe (default 0), are increased by step (default 1) and stop at endframe You can skip one of those values, for example 1:100 for frames 1,2,...,100 and 0:2: for frame 0,2,4,... up to the last file that exists. --skip-missing Skip up to ten frames in a row if corresponding files are missing. Otherwise the program stops reading sequence at the first file that does not exists. This switch does not apply to the first frame in a sequence. This switch can be useful if there is a rendered animation where some of the frame has not been generated. --linear, -l Converts pixel values to linear luminance (XYZ), assuming the sRGB color space for the input image. The maximum pixel value (255,255,255) is mapped to Y=1. LUMINANCE tag is set to RELATIVE. --absolute <max_lum>, -a <max_lum> --absolute converts pixel values to an absolute linear luminance (XYZ), that is the color space, in which channel Y contains lumi- nance given in cd/m^2. The sRGB color space is assumed for the input image. The maximum pixel value (255,255,255) is mapped to Y=<max_lum>. <max_lum> is typically set to 80 [cd/m^2] for a CRT monitor. LUMINANCE tag is set to ABSOLUTE. --absolute process images almost the same as --relative, but additionally it scales all pixels by <max_lum>. EXAMPLES
pfsinimgmagick frame%04d.dpx --frames 0:10 | pfsview Read frames from files frame0000.dpx, frame0001.dpx, ..., frame0010.dpx and show them using pfsview. BUGS
pfsinimgmagick can not read frames from the Standard Input. Please report bugs and comments on implementation to the discussion group SEE ALSO
pfsin(1), pfsout(1) ImageMagick(1) pfsinimgmagick(1)