Wireshark mailing list archives
Re: usbmon: size of different fields?
From: Alan Stern <stern () rowland harvard edu>
Date: Tue, 9 Nov 2010 10:05:37 -0500 (EST)
On Tue, 9 Nov 2010, [UTF-8] Németh Márton wrote:
Hi, I'm looking at the struct mon_bin_hdr and struct mon_bin_isodesc in file http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=blob;f=drivers/usb/mon/mon_bin.c;h=44cb37b5a4dc1f9b27075e3db5346b9ebe307b22;hb=HEAD As far as I understand u64, s64, u32 and s32 have always fixed bit lengths.
That's right.
What about "unsigned char", "char", "unsigned int" and "int"? May their size in bits differ in different architecture?
char and unsigned char are always 8 bits. int and unsigned int are always 32 bits. long and unsigned long can be either 32 or 64 bits, depending on the architecture.
I'm asking this because I was dealing with the USB packet dissectors for Wireshark and it is possible to capture the USB traffic on one computer and then transfer the file to another computer.
There shouldn't be any trouble with the field sizes. The endianness could cause a problem, though. Alan Stern ___________________________________________________________________________ Sent via: Wireshark-dev mailing list <wireshark-dev () wireshark org> Archives: http://www.wireshark.org/lists/wireshark-dev Unsubscribe: https://wireshark.org/mailman/options/wireshark-dev mailto:wireshark-dev-request () wireshark org?subject=unsubscribe
Current thread:
- usbmon: size of different fields? Németh Márton (Nov 08)
- Re: usbmon: size of different fields? Maynard, Chris (Nov 09)
- Re: usbmon: size of different fields? Guy Harris (Nov 09)
- Re: usbmon: size of different fields? Pete Zaitcev (Nov 11)
- Re: usbmon: size of different fields? Németh Márton (Nov 09)
- Re: usbmon: size of different fields? Guy Harris (Nov 09)
- Re: usbmon: size of different fields? Pete Zaitcev (Nov 11)
- Re: usbmon: size of different fields? Guy Harris (Nov 10)
- Re: usbmon: size of different fields? Németh Márton (Nov 09)
- Re: usbmon: size of different fields? Maynard, Chris (Nov 09)