* Maximum packet size in kernel
@ 2004-12-02 9:44 cranium2003
2004-12-04 22:05 ` global memory access Lan Xue
0 siblings, 1 reply; 3+ messages in thread
From: cranium2003 @ 2004-12-02 9:44 UTC (permalink / raw)
To: kernerl mail; +Cc: net dev
hello,
I want to know how much maximum packet size is
assigned by alloc_skb in kernel? and is there any
extra space remains in packet allocated memory?
Does it dependent on CPU cache?
regards,
cranium.
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^ permalink raw reply [flat|nested] 3+ messages in thread
* global memory access
2004-12-02 9:44 Maximum packet size in kernel cranium2003
@ 2004-12-04 22:05 ` Lan Xue
2004-12-05 0:47 ` Tommy Reynolds
0 siblings, 1 reply; 3+ messages in thread
From: Lan Xue @ 2004-12-04 22:05 UTC (permalink / raw)
To: netdev; +Cc: kernerl mail
Hi,
I was wondering how a user-level program can share a writable memory
buffer with the kernel. The memory can either belongs to the kernel space
or the user space, but both kernel module and user program should be able
to access(read, write) it.
Any hint? Many thanks,
Lan
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: global memory access
2004-12-04 22:05 ` global memory access Lan Xue
@ 2004-12-05 0:47 ` Tommy Reynolds
0 siblings, 0 replies; 3+ messages in thread
From: Tommy Reynolds @ 2004-12-05 0:47 UTC (permalink / raw)
To: linux-kernel
Uttered Lan Xue <lanxue@soe.ucsc.edu>, spake thus:
> I was wondering how a user-level program can share a writable memory
> buffer with the kernel. The memory can either belongs to the kernel space
> or the user space, but both kernel module and user program should be able
> to access(read, write) it.
$ man 2 mmap
Cheers!
^ permalink raw reply [flat|nested] 3+ messages in thread
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