Make nic option rom loading less painful.

The code how it is today, is totally painful to read and keep.
To begin with, the code is duplicated with the option rom loading
code that linux_boot and vga are already using.

This patch introduces a "bootable" state in NICInfo structure,
that we can use to keep track of whether or not a given nic should
be bootable, avoiding the introduction of yet another global state.

With that in hands, we move the code in vl.c to hw/pc.c, and use
the already existing infra structure to load those option roms.

Error checking code suggested by Mark McLoughlin

Signed-off-by: Glauber Costa <glommer@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>

1 files changed, 20 insertions, 0 deletions

diff --git a/net.c b/net.c
index af9de73..c83999b 100644
--- a/net.c
+++ b/net.c
@@ -2457,6 +2457,26 @@ int net_client_parse(const char *str)
     return net_client_init(NULL, device, p);
 }
 
+void net_set_boot_mask(int net_boot_mask)
+{
+    int i;
+
+    /* Only the first four NICs may be bootable */
+    net_boot_mask = net_boot_mask & 0xF;
+
+    for (i = 0; i < nb_nics; i++) {
+        if (net_boot_mask & (1 << i)) {
+            nd_table[i].bootable = 1;
+            net_boot_mask &= ~(1 << i);
+        }
+    }
+
+    if (net_boot_mask) {
+        fprintf(stderr, "Cannot boot from non-existent NIC\n");
+        exit(1);
+    }
+}
+
 void do_info_network(Monitor *mon)
 {
     VLANState *vlan;