diff options
Diffstat (limited to 'lib/libstand/bootp.c')
| -rw-r--r-- | lib/libstand/bootp.c | 26 |
1 files changed, 23 insertions, 3 deletions
diff --git a/lib/libstand/bootp.c b/lib/libstand/bootp.c index 35ccf7a..c440c98 100644 --- a/lib/libstand/bootp.c +++ b/lib/libstand/bootp.c @@ -37,6 +37,7 @@ * SUCH DAMAGE. * * @(#) Header: bootp.c,v 1.4 93/09/11 03:13:51 leres Exp (LBL) + * $FreeBSD$ */ #include <sys/types.h> @@ -80,8 +81,9 @@ struct in_addr dhcp_serverip; /* Fetch required bootp infomation */ void -bootp(sock) +bootp(sock, flag) int sock; + int flag; { struct iodesc *d; register struct bootp *bp; @@ -124,7 +126,19 @@ bootp(sock) bp->bp_vend[4] = TAG_DHCP_MSGTYPE; bp->bp_vend[5] = 1; bp->bp_vend[6] = DHCPDISCOVER; - bp->bp_vend[7] = TAG_END; + + /* + * If we are booting from PXE, we want to send the string + * 'PXEClient' to the DHCP server so you have the option of + * only responding to PXE aware dhcp requests. + */ + if (flag & BOOTP_PXE) { + bp->bp_vend[7] = TAG_CLASSID; + bp->bp_vend[8] = 9; + bcopy("PXEClient", &bp->bp_vend[9], 9); + bp->bp_vend[18] = TAG_END; + } else + bp->bp_vend[7] = TAG_END; #else bp->bp_vend[4] = TAG_END; #endif @@ -161,7 +175,13 @@ bootp(sock) bp->bp_vend[20] = 4; leasetime = htonl(300); bcopy(&leasetime, &bp->bp_vend[21], 4); - bp->bp_vend[25] = TAG_END; + if (flag & BOOTP_PXE) { + bp->bp_vend[25] = TAG_CLASSID; + bp->bp_vend[26] = 9; + bcopy("PXEClient", &bp->bp_vend[27], 9); + bp->bp_vend[36] = TAG_END; + } else + bp->bp_vend[25] = TAG_END; expected_dhcpmsgtype = DHCPACK; |
