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qemu: dynamic nic info index allocation (Marcelo Tosatti)

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Dynamically allocate nic info index, so to reuse indexes when devices are
removed.

Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6595 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
aliguori 2009-02-11 15:20:03 +00:00
parent 7d5aca9ee6
commit 7697079b73
2 changed files with 16 additions and 3 deletions
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18
net.c
View File

@ -1501,6 +1501,16 @@ VLANState *qemu_find_vlan(int id)
return vlan;
}
static int nic_get_free_idx(void)
{
int index;
for (index = 0; index < MAX_NICS; index++)
if (!nd_table[index].used)
return index;
return -1;
}
void qemu_check_nic_model(NICInfo *nd, const char *model)
{
const char *models[2];
@ -1557,19 +1567,20 @@ int net_client_init(const char *device, const char *p)
if (!strcmp(device, "nic")) {
NICInfo *nd;
uint8_t *macaddr;
int idx = nic_get_free_idx();
if (nb_nics >= MAX_NICS) {
if (idx == -1 || nb_nics >= MAX_NICS) {
fprintf(stderr, "Too Many NICs\n");
return -1;
}
nd = &nd_table[nb_nics];
nd = &nd_table[idx];
macaddr = nd->macaddr;
macaddr[0] = 0x52;
macaddr[1] = 0x54;
macaddr[2] = 0x00;
macaddr[3] = 0x12;
macaddr[4] = 0x34;
macaddr[5] = 0x56 + nb_nics;
macaddr[5] = 0x56 + idx;
if (get_param_value(buf, sizeof(buf), "macaddr", p)) {
if (parse_macaddr(macaddr, buf) < 0) {
@ -1582,6 +1593,7 @@ int net_client_init(const char *device, const char *p)
}
nd->vlan = vlan;
nd->name = name;
nd->used = 1;
name = NULL;
nb_nics++;
vlan->nb_guest_devs++;

1
net.h
View File

@ -65,6 +65,7 @@ struct NICInfo {
const char *name;
VLANState *vlan;
void *private;
int used;
};
extern int nb_nics;