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POnetwork device module equivalent to ping
 

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    <p>I have made a module which is transmitting but I don't know whether the packet which I am transmitting is a ping packet or not. Code is shown below:</p> <pre class="lang-c prettyprint-override"><code> icmp.type = 8; icmp.code = 0; icmp.un.echo.sequence = i; ip4.protocol = 1; //for icmp protocol ip4.frag_off = 0; ip4.daddr = in_aton(procfs_buffer); ip4.saddr = in_aton(ifr-&gt;ifr_addr.sa_data); len = sizeof(data); skb = dev_alloc_skb(1500); skb-&gt;dev = __dev_get_by_name(&amp;init_net,"wlan0"); skb_reserve(skb,NET_IP_ALIGN); // header of 2 bytes; increments tail and // data pointer skb-&gt;data = skb_put(skb,sizeof(len)); // increments all pointer or adds data memcpy(data,skb-&gt;data,len); skb-&gt;transport_header =skb_push(skb,sizeof(icmp)); memset(skb-&gt;transport_header,0,sizeof(struct icmphdr)); memcpy(skb-&gt;transport_header,&amp;icmp,sizeof(struct icmphdr)); skb-&gt;network_header=skb_push(skb,sizeof(ip4)); memset(skb-&gt;network_header,0,sizeof(struct iphdr)); memcpy(skb-&gt;network_header,&amp;ip4,sizeof(struct iphdr)); // printk("i::%d\n",i); // skb-&gt;mac_header = skb_push(skb,6*sizeof(0xFF)); // memset(skb-&gt;mac_header,0xFF,6*sizeof(0xFF)); dev_queue_xmit(skb); kfree(skb); </code></pre> <p>How can I know that it is a ping packet which I am creating and transmitting? Further I want to receieve the ping packet in response to my ping packet which I have transmitted. I would like to use napi but wont mind any other suggestions.</p> <p>please read a topic : reception napi mode <a href="http://www.cs.columbia.edu/~nahum/w6998/lectures/device-layer.ppt" rel="nofollow">here</a> i could nt understand what to do from the link above.....</p>
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    1. USkaran421
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    1. COYou made a kernel module but you don't know what it does ... ?
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      1. USMartin Tournoij
    2. CO@Carpetsmoker I know whats its doing (at this point its only transmitting) but I am not sure whether its transmitting a ping packet or not and dont know how to recieve packets and check whether they are ping response from other side
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