Hi, You can access an IP packet's source/destination addresses by accessing the IP header directly:
click_ip *iph = p->ip_header(); uint32_t src = ntohl(iph->ip_src.s_addr); uint32_t dst = ntohl(iph->ip_dst.s_addr); See click/include/clicknet/ip.h Note before you can you p->ip_header() you have to filter for IP packets AND set the IP Header annotation using MarkIPHeader of CheckIPHeader elements as per configuration examples. Beyers On Wed, Aug 12, 2009 at 4:50 PM, 束传军 <[email protected]> wrote: > I want to get the both source ip address and destination ip address from a > packet received from FromDevice in click router? It is possible to do it > using the Annotaions of a Packet or another possible method? I have tried > to > study the struct of the Anno, but unfortunately I failed to find anything > that can help me except that I got to know that it has 48-byte size ! So, I > turn to the click mail list, hoping that sombody can help me! > PS: I want to get both IPv4 and IPv6 addresses. And I am afraid that it > needs diferent jobs to get the two different types of ip addresses. > Best Regards! > _______________________________________________ > click mailing list > [email protected] > https://amsterdam.lcs.mit.edu/mailman/listinfo/click > _______________________________________________ click mailing list [email protected] https://amsterdam.lcs.mit.edu/mailman/listinfo/click
