Sirs,
We are a group of three students working on a project which is
the software implementation of a LAN switch. We are working with
sockets in Linux(sock_packet). what we basically wish to achieve
is to be able to switch between two logical segments using our
code. We have a multihomed PC with the NICs connected to different
logical segments.
What we have achieved so far is capturing packets on the network
by putting our card in promisc mode and storing the destination IP
addresses in some buffer. We have made a decision about the NIC
which should forward the packet to the destination workstation.
We are trying to use sendto to send the packet to the destination
workstation but the problem is that with sockaddr structure we
can't specify destination address. Instead if we use the structure
sockaddr_in(the destination address can be specified) the
Interface such as eth0 cannot be specified.
Please help us out as to why sendto does not work this way. If
there is another way to get the sending of packet done please let
us know!
Thankx in advance,
Shweta Bagade & group.
