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[Qemu-commits] [COMMIT 0928a95] slirp: Reassign same address to same DHC
From: |
Anthony Liguori |
Subject: |
[Qemu-commits] [COMMIT 0928a95] slirp: Reassign same address to same DHCP client |
Date: |
Fri, 22 May 2009 15:52:52 -0000 |
From: Jan Kiszka <address@hidden>
In case a client restarts a DHCP recovery without releasing its old
address, reassign the same address to prevent consuming free addresses
and moving away from the standard client address.
Signed-off-by: Jan Kiszka <address@hidden>
diff --git a/slirp/bootp.c b/slirp/bootp.c
index ae71e46..4e0082d 100644
--- a/slirp/bootp.c
+++ b/slirp/bootp.c
@@ -49,13 +49,15 @@ if (slirp_debug & DBG_CALL) { fprintf(dfd, fmt, ##
__VA_ARGS__); fflush(dfd); }
#define dprintf(fmt, ...)
#endif
-static BOOTPClient *get_new_addr(struct in_addr *paddr)
+static BOOTPClient *get_new_addr(struct in_addr *paddr,
+ const uint8_t *macaddr)
{
BOOTPClient *bc;
int i;
for(i = 0; i < NB_ADDR; i++) {
- if (!bootp_clients[i].allocated)
+ bc = &bootp_clients[i];
+ if (!bc->allocated || !memcmp(macaddr, bc->macaddr, 6))
goto found;
}
return NULL;
@@ -192,7 +194,7 @@ static void bootp_reply(const struct bootp_t *bp)
}
if (!bc) {
new_addr:
- bc = get_new_addr(&daddr.sin_addr);
+ bc = get_new_addr(&daddr.sin_addr, client_ethaddr);
if (!bc) {
dprintf("no address left\n");
return;
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