LLA and DLPI Example Programs
LLA Example Program
/**************************************************************************** Close the file descriptor. This will automatically unbind the protocol.
****************************************************************************/
void cleanup(fd)
int fd;
{
/* close */ close(fd);
}
/**************************************************************************** receive a data packet;
****************************************************************************/
int |
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recv_data(fd) |
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int | fd; | /* file descriptor */ |
{ |
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int | length; |
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length = get_pkt(fd); | ||
if(length == 0) | { | |
printf(”error: did not receive any data part \n”); exit(1);
}
return(length);
}
/**************************************************************************** send a data packet; assumes data_area has already been filled in
and a destination address has already been logged.
****************************************************************************/
void |
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send_data(fd, len) |
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int | fd; | /* file descriptor */ |
int | len; | /* length of the packet to send */ |
{ |
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put_data(fd, len);
}
/**************************************************************************** print a string followed by a destination MAC and SAP address.
****************************************************************************/
void
print_dest_addr(string, dest_addr, dest_addr_len)
char | *string; | /* | label */ |
u_char | *dest_addr; | /* | the destination address */ |
36 | Chapter 2 |