Re: [B.A.T.M.A.N.] [PATCH 3/3] batman-adv: send DHCP requests directly to the chosen gw

+bool gw_is_target(struct sk_buff *skb) +{

• struct ethhdr *ethhdr;
• struct iphdr *iphdr;
• struct udphdr *udphdr;
• if (atomic_read(&gw_mode) != GW_MODE_CLIENT)

• return false;
  

• if (!curr_gateway)

• return false;
  

• ethhdr = (struct ethhdr *)skb->data;
• if (ntohs(ethhdr->h_proto) != ETH_P_IP)

• return false;
  

• iphdr = (struct iphdr *)(skb->data + ETH_HLEN);
• if (iphdr->protocol != IPPROTO_UDP)

• return false;
  

• udphdr = (struct udphdr *)(skb->data + ETH_HLEN + (iphdr->ihl * 4));
• if (ntohs(udphdr->dest) != 67)

• return false;
  

• return true;

+}

• /* ethernet packet should be broadcasted */
• if (is_bcast(ethhdr->h_dest) || is_mcast(ethhdr->h_dest)) {

• if (is_bcast(ethhdr->h_dest) || is_mcast(ethhdr->h_dest))

• bcast_dst = true;
  

• if ((bcast_dst) && gw_is_target(skb))

• do_bcast = false;
  

Say the DHCP server is running in client mode. It has also been requested to broadcast its replies, not unicast the replies.

http://blogs.technet.com/teamdhcp/archive/2009/02/12/dhcp-broadcast-flag-han...

If i'm reading this code correctly, it will end up sending the DHCP reply messages by unicast to the best gateway, not the DHCP client?

Andrew