netpoll: provide an IP ident in UDP frames
Let's fill IP header ident field with a meaningful value,
it might help some setups.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/core/netpoll.c b/net/core/netpoll.c
index 346b1eb..5af9c26 100644
--- a/net/core/netpoll.c
+++ b/net/core/netpoll.c
@@ -388,6 +388,7 @@
struct udphdr *udph;
struct iphdr *iph;
struct ethhdr *eth;
+ static atomic_t ip_ident;
udp_len = len + sizeof(*udph);
ip_len = udp_len + sizeof(*iph);
@@ -423,7 +424,7 @@
put_unaligned(0x45, (unsigned char *)iph);
iph->tos = 0;
put_unaligned(htons(ip_len), &(iph->tot_len));
- iph->id = 0;
+ iph->id = htons(atomic_inc_return(&ip_ident));
iph->frag_off = 0;
iph->ttl = 64;
iph->protocol = IPPROTO_UDP;