slirp: Factor out internal state structure

The essence of this patch is to stuff (almost) all global variables of
the slirp stack into the structure Slirp. In this step, we still keep
the structure as global variable, directly accessible by the whole
stack. Changes to the external interface of slirp will be applied in
the following patches.

Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>

1 files changed, 7 insertions, 0 deletions

diff --git a/slirp/bootp.h b/slirp/bootp.h
index 3d80515c98..30c30ab863 100644
--- a/slirp/bootp.h
+++ b/slirp/bootp.h
@@ -112,4 +112,11 @@ struct bootp_t {
     uint8_t bp_vend[DHCP_OPT_LEN];
 };
 
+typedef struct {
+    uint16_t allocated;
+    uint8_t macaddr[6];
+} BOOTPClient;
+
+#define NB_BOOTP_CLIENTS 16
+
 void bootp_input(struct mbuf *m);