To access all nexthops in a path

soorya · 07-01-2019, 07:52 AM

Hai,
How can I find all the nexthops in a
Path using aomdv protocol.When i call
path->nexthop,I am getting the first hop of that path..How can I access further hops.Is there any way to increment nexthops...please help....

TB0ne · 07-01-2019, 08:02 AM

Quote:

Originally Posted by soorya

Hai,
How can I find all the nexthops in a Path using aomdv protocol.When i call path->nexthop,I am getting the first hop of that path..How can I access further hops.Is there any way to increment nexthops...please help....

Yes, you have to modify your code to do so. We will be happy to help you, so post your code and show us what you've done/tried so far, and we'll be glad to assist. See the "Question Guidelines".

soorya · 07-01-2019, 08:21 AM

if(rt->rt_flags == RTF_UP) {
double max = 5.0;
assert(rt->rt_hops != INFINITY2);
AOMDV_Path *path = rt->path_find();

for (; path; path = path->path_link.le_next){
int nexthop = path->nexthop;
int path_count = path->hopcount;
while(resi_energy[nexthop]>=max){
ap1==true; ///here I want to check this condition for all nexthops in the path
}
if(ap1==true){
forward(rt, p, NO_AOMDV_DELAY);
}

}

}

TB0ne · 07-01-2019, 08:54 AM

Quote:

Originally Posted by soorya

Code:

if(rt->rt_flags == RTF_UP) {
		double max = 5.0;
		assert(rt->rt_hops != INFINITY2);
		AOMDV_Path *path =  rt->path_find();
	
		for (; path; path = path->path_link.le_next){  
			int nexthop = path->nexthop;
			int path_count = path->hopcount;
			while(resi_energy[nexthop]>=max){
				ap1==true;  ///here I want to check this condition for all  nexthops in the path
			}			
			if(ap1==true){
				 forward(rt, p, NO_AOMDV_DELAY);
			}
		}
	}

Post code in CODE tags, and again, read the "Question Guidelines". You've posted a VERY small piece of code, with no context, error messages, or told us what you've done/tried. What do you expect us to be able to do with this???

soorya · 07-01-2019, 09:22 AM

I am attaching aomdv.cc code here in text format.I am using ns2.35.I want to forward packets through the paths in which all nodes have an energy level higher than 5(threshold).So I made changes in AOMDV::rt_resolve(Packet *p) function.(Line 512-552). In line 544 I added a while loop for checking all nexthops in the path.But I dont know how to increment the nexthop to the remaining hops in the path. While running this code the while loop is not terminating bcz the nexthop condition is not changing .It only check first hop in the path.So how can I access further nexthops ?

TB0ne · 07-01-2019, 09:25 AM

Quote:

Originally Posted by soorya

I am attaching aomdv.cc code here in text format.

No, you didn't attach the file, and before you do that please (AGAIN) read the "Question Guidelines". Don't just post the code you downloaded in a file, and expect people to download it and run it. We volunteer our time to try to help...post the code HERE (in CODE tags), and most importantly, SHOW US WHAT YOU HAVE DONE/TRIED SO FAR.

Again, we are happy to help, but we aren't going to make your code changes for you. You have to show your own efforts.

soorya · 07-01-2019, 09:44 AM

Code:

void
AOMDV::rt_resolve(Packet *p) {
	struct hdr_cmn *ch = HDR_CMN(p);
	struct hdr_ip *ih = HDR_IP(p);
	aomdv_rt_entry *rt;
	bool ap = false;
	bool ap1 = false;

	struct hdr_aomdv_reply *rp = HDR_AOMDV_REPLY(p);

	/*
	 *  Set the transmit failure callback.  That
	 *  won't change.
	 */
	ch->xmit_failure_ = aomdv_rt_failed_callback;
	ch->xmit_failure_data_ = (void*) this;
   	rt = rtable.rt_lookup(ih->daddr());
	if(rt == 0) {
		rt = rtable.rt_add(ih->daddr());
	}
	
	/*
	 * If the route is up, forward the packet 
	 */
   /*I made modification here*/
  	if(rt->rt_flags == RTF_UP) {
		double max = 5.0;
		assert(rt->rt_hops != INFINITY2);
		AOMDV_Path *path =  rt->path_find();
	
		for (; path; path = path->path_link.le_next){  
			int nexthop = path->nexthop;
			int path_count = path->hopcount;
			while(resi_energy[nexthop]>=max){
				ap1==true;
					
			}			
			if(ap1==true){
				forward(rt, p, NO_AOMDV_DELAY);
			}
			
		
		}
		


	}

TB0ne · 07-02-2019, 07:05 AM

Quote:

Originally Posted by soorya

I am attaching aomdv.cc code here in text format.I am using ns2.35.I want to forward packets through the paths in which all nodes have an energy level higher than 5(threshold).So I made changes in AOMDV::rt_resolve(Packet *p) function.(Line 512-552). In line 544 I added a while loop for checking all nexthops in the path.But I dont know how to increment the nexthop to the remaining hops in the path. While running this code the while loop is not terminating bcz the nexthop condition is not changing .It only check first hop in the path.So how can I access further nexthops ?

Don't edit your posts; AGAIN, read the "Question Guidelines" and the LQ Rules. You added a great deal to this post, as well as attaching a file to it. And when you were asked to post the code, you still only posted a small bit.

The actual file you posted has an example on line 302 of how to implement a counter to loop through things.