[Xen-devel] [PATCH] mini-os: free dropped lwip packets

[Samuel Thibault <samuel.thibault@xxxxxxxxxxxxx>]

mini-os: free dropped lwip packets
When lwIP can not accept a packet, it is up to us to free it.

Signed-off-by: Samuel Thibault <samuel.thibault@xxxxxxxxxxxxx>

diff -r be3025f6af2e extras/mini-os/lwip-net.c
--- a/extras/mini-os/lwip-net.c Mon Mar 24 18:24:03 2008 +0000
+++ b/extras/mini-os/lwip-net.c Tue Mar 25 17:05:53 2008 +0000
@@ -206,13 +206,16 @@ netfront_input(struct netif *netif, unsi
     /* skip Ethernet header */
     pbuf_header(p, -(s16)sizeof(struct eth_hdr));
     /* pass to network layer */
-    tcpip_input(p, netif);
+    if (tcpip_input(p, netif) == ERR_MEM)
+      /* Could not store it, drop */
+      pbuf_free(p);
     break;
       
   case ETHTYPE_ARP:
     /* pass p to ARP module  */
     etharp_arp_input(netif, (struct eth_addr *) netif->hwaddr, p);
     break;
+
   default:
     pbuf_free(p);
     p = NULL;

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