xen: LWIP source code with patches applied for stubdoms

lwIP is a small implementation of the TCP/IP stack designed for use in
embedded systems. This lwIP recipe does not configure nor does it build
the product. Instead, this recipe applies the patches normally found in
the Xen/stubdom source tree and creates a source package that can be
used for cross-compiling for MiniOS.

The current Xen source code is hardcoded to fetch a specific version of
this package. The patch files originate from the Xen/stubdom source
tree. This recipe provides the flexibility to change version or modify
the patches.

Signed-off-by: Kurt Bodiker <kurt.bodiker@braintrust-us.com>
Signed-off-by: Bruce Ashfield <bruce.ashfield@windriver.com>

1 files changed, 13 insertions, 0 deletions

diff --git a/recipes-extended/xen/files/lwip.dhcp_create_request-hwaddr_len.patch b/recipes-extended/xen/files/lwip.dhcp_create_request-hwaddr_len.patch
new file mode 100644
index 00000000..4bbf21a1
--- /dev/null
+++ b/recipes-extended/xen/files/lwip.dhcp_create_request-hwaddr_len.patch
@@ -0,0 +1,13 @@
+Index: src/core/dhcp.c
+===================================================================
+--- a/src/core/dhcp.c
++++ b/src/core/dhcp.c
+@@ -1356,7 +1358,7 @@ dhcp_create_request(struct netif *netif)
+   dhcp->msg_out->giaddr.addr = 0;
+   for (i = 0; i < DHCP_CHADDR_LEN; i++) {
+     /* copy netif hardware address, pad with zeroes */
+-    dhcp->msg_out->chaddr[i] = (i < netif->hwaddr_len) ? netif->hwaddr[i] : 0/* pad byte*/;
++    dhcp->msg_out->chaddr[i] = (i < (netif->hwaddr_len > NETIF_MAX_HWADDR_LEN ? NETIF_MAX_HWADDR_LEN : netif->hwaddr_len)) ? netif->hwaddr[i] : 0/* pad byte*/;
+   }
+   for (i = 0; i < DHCP_SNAME_LEN; i++) {
+     dhcp->msg_out->sname[i] = 0;