On Wed, 30 Jul 2014 16:21:26 +0800
Zhouyi Zhou <zhouzhouyi@xxxxxxxxx> wrote:
> I think it is useful to add ttl option for pktgen, for example
> if a some ISP want to test its network quality, it could set
> ttl so that the tested links get the packet while end users won't
> get it.
It seems you're missing
--- a/net/core/pktgen.c
+++ b/net/core/pktgen.c
@@ -2799,7 +2799,7 @@ static struct sk_buff *fill_packet_ipv4(struct net_device *odev,
iph->ihl = 5;
iph->version = 4;
- iph->ttl = 32;
+ iph->ttl = pkt_dev->ttl;
iph->tos = pkt_dev->tos;
iph->protocol = IPPROTO_UDP; /* UDP */
iph->saddr = pkt_dev->cur_saddr;
--
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