Delayed IP packets

In the current implementation, if Slirp tries to send an IP packet to a client
with an unknown hardware address, the packet is simply dropped and an ARP
request is sent (if_encap in slirp/slirp.c).

With this patch, Slirp will send the ARP request, re-queue the packet and try
to send it later. The packet is dropped after one second if the ARP reply is
not received.

Signed-off-by: Fabien Chouteau <chouteau@adacore.com>
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>

1 files changed, 2 insertions, 0 deletions

diff --git a/mbuf.h b/mbuf.h
index 39e5ecd..1a2df30 100644
--- a/mbuf.h
+++ b/mbuf.h
@@ -85,6 +85,8 @@ struct mbuf {
         char m_dat_[1]; /* ANSI don't like 0 sized arrays */
         char *m_ext_;
     } M_dat;
+    bool arp_requested;
+    uint64_t expiration_date;
 };
 
 #define m_next m_hdr.mh_next