Hi, I needed some direction again. I also need to know where in the source code does squid open the network interface before it reads/writes from it. Thanks.
Regards On Tue, Jan 6, 2015 at 11:37 AM, Priya Agarwal <priyaiitma...@gmail.com> wrote: > Thanks a lot. :) > I'll sign up for squid-dev mailing list and do any further discussions > there. > > > On Tue, Jan 6, 2015 at 12:13 AM, Amos Jeffries <squ...@treenet.co.nz> > wrote: > >> -----BEGIN PGP SIGNED MESSAGE----- >> Hash: SHA1 >> >> On 6/01/2015 6:01 a.m., Priya Agarwal wrote: >> > Thank you for the reply. >> > >> > I do not intend to change its functionality. I just want to make it >> > run on a processor (Freescale's T4240). For that it has to use some >> > new architectural features (Data Path Acceleration Architecture) >> > which are a part of the processor. >> > >> > For e.g. suppose squid was merely swapping ipv4/mac src and dest >> > addresses( just an example! ) in the packet header and sends it >> > back. So I don't want to change what it does, I just want squid to >> > send whatever data it has prepared to a memory location. Basically >> > instead of receiving and sending to OS Stack, I want to it read and >> > write from memory. (Further details : This memory is basically a >> > memory-mapped device which is further responsible for transmitting >> > the frame to a network interface, ethernet) >> > >> > So maybe if I could know where in the source code does it >> > communicate with the OS stack. >> >> Ah, that kind of packet handling is all much, much lower level than Squid. >> >> Squid uses functions provided by the POSIX system API with socket >> handles/"filedescriptors". >> >> http://man7.org/linux/man-pages/man7/socket.7.html >> http://man7.org/linux/man-pages/man2/read.2.html >> http://man7.org/linux/man-pages/man2/write.2.html >> >> The functions in src/fd.cc are where that happens, the lowest >> networking-I/O level of Squid. >> >> >> NP: If you want to take this further and/or discuss any other feature >> additions/changes I encourage you to sign up to squid-dev mailing list >> and discuss it with the whole dev team. This list is for general user >> discussions, (though sometimes code talk from someone doing bug >> investigations does slip in). >> >> Amos >> -----BEGIN PGP SIGNATURE----- >> Version: GnuPG v2.0.22 (MingW32) >> >> iQEcBAEBAgAGBQJUqts4AAoJELJo5wb/XPRjJu4IANCAhXt7PM48xHkERw/mz/sa >> heSoEC7nJXaLpRz9JSq085UY2F0p55/GH0Gdh+XLq0h6kMLZB8qYTify0WMp18Jj >> sfVOhuURZVdabS5ldW2ZrqftsqCt5eu3JvgHtQ+ewp8RhN5OI6OTQbCL9sf6llWY >> Vqm1gno2IymyjcsuPYzpDv7sw7M3odJSETAD2eh6E3r+++uN1q5R4JZ7GZt5mgaE >> tIJF0DyOlhAfAJIniCImZ0MDqWHLWjrzLWZRazHg4zA025TinDxkjy+qfHnjYfDc >> oIFh9t/mtSbHPnBiZmsyUDOfl/wB0EOMuXEItoLGgBLh/71huVf2QRmfXUr6qS8= >> =oajV >> -----END PGP SIGNATURE----- >> > >
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