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authorDavid E. O'Brien <obrien@FreeBSD.org>1999-06-23 23:40:02 +0000
committerDavid E. O'Brien <obrien@FreeBSD.org>1999-06-23 23:40:02 +0000
commitf1b2a73d600a397664f7e0bb0759d114e4bd9338 (patch)
tree1f762fde578b5005be25198c106c89beb9550ae2 /contrib/isc-dhcp/common/lpf.c
parentf96b6240a8bcccf45bd5180f78bf9512c3339a18 (diff)
downloadsrc-f1b2a73d600a397664f7e0bb0759d114e4bd9338.tar.gz
src-f1b2a73d600a397664f7e0bb0759d114e4bd9338.zip
Virgin import of ISC-DHCP v2.0
Notes
Notes: svn path=/vendor/isc-dhcp/dist/; revision=48146
Diffstat (limited to 'contrib/isc-dhcp/common/lpf.c')
-rw-r--r--contrib/isc-dhcp/common/lpf.c68
1 files changed, 56 insertions, 12 deletions
diff --git a/contrib/isc-dhcp/common/lpf.c b/contrib/isc-dhcp/common/lpf.c
index 4deecf85f24f..9e566849f749 100644
--- a/contrib/isc-dhcp/common/lpf.c
+++ b/contrib/isc-dhcp/common/lpf.c
@@ -43,7 +43,7 @@
#ifndef lint
static char copyright[] =
-"$Id: lpf.c,v 1.1.2.8 1999/03/29 22:07:13 mellon Exp $ Copyright (c) 1995, 1996, 1998, 1999 The Internet Software Consortium. All rights reserved.\n";
+"$Id: lpf.c,v 1.1.2.9 1999/05/27 17:44:52 mellon Exp $ Copyright (c) 1995, 1996, 1998, 1999 The Internet Software Consortium. All rights reserved.\n";
#endif /* not lint */
#include "dhcpd.h"
@@ -59,6 +59,9 @@ static char copyright[] =
#include "includes/netinet/udp.h"
#include "includes/netinet/if_ether.h"
+static void lpf_gen_filter_setup PROTO ((struct interface_info *));
+static void lpf_tr_filter_setup PROTO ((struct interface_info *));
+
/* Reinitializes the specified interface after an address change. This
is not required for packet-filter APIs. */
@@ -149,15 +152,36 @@ void if_register_send (info)
in bpf includes... */
extern struct sock_filter dhcp_bpf_filter [];
extern int dhcp_bpf_filter_len;
+extern struct sock_filter dhcp_bpf_tr_filter [];
+extern int dhcp_bpf_tr_filter_len;
void if_register_receive (info)
struct interface_info *info;
{
- struct sock_fprog p;
-
/* Open a LPF device and hang it on this interface... */
info -> rfdesc = if_register_lpf (info);
+ if (info -> hw_address.htype == HTYPE_IEEE802)
+ lpf_tr_filter_setup (info);
+ else
+ lpf_gen_filter_setup (info);
+
+ if (!quiet_interface_discovery)
+ note ("Listening on LPF/%s/%s%s%s",
+ info -> name,
+ print_hw_addr (info -> hw_address.htype,
+ info -> hw_address.hlen,
+ info -> hw_address.haddr),
+ (info -> shared_network ? "/" : ""),
+ (info -> shared_network ?
+ info -> shared_network -> name : ""));
+}
+
+static void lpf_gen_filter_setup (info)
+ struct interface_info *info;
+{
+ struct sock_fprog p;
+
/* Set up the bpf filter program structure. This is defined in
bpf.c */
p.len = dhcp_bpf_filter_len;
@@ -178,15 +202,35 @@ void if_register_receive (info)
"in your kernel configuration");
error ("Can't install packet filter program: %m");
}
- if (!quiet_interface_discovery)
- note ("Listening on LPF/%s/%s%s%s",
- info -> name,
- print_hw_addr (info -> hw_address.htype,
- info -> hw_address.hlen,
- info -> hw_address.haddr),
- (info -> shared_network ? "/" : ""),
- (info -> shared_network ?
- info -> shared_network -> name : ""));
+}
+
+static void lpf_tr_filter_setup (info)
+ struct interface_info *info;
+{
+ struct sock_fprog p;
+
+ /* Set up the bpf filter program structure. This is defined in
+ bpf.c */
+ p.len = dhcp_bpf_tr_filter_len;
+ p.filter = dhcp_bpf_tr_filter;
+
+ /* Patch the server port into the LPF program...
+ XXX changes to filter program may require changes
+ XXX to the insn number(s) used below!
+ XXX Token ring filter is null - when/if we have a filter
+ XXX that's not, we'll need this code.
+ XXX dhcp_bpf_filter [?].k = ntohs (local_port); */
+
+ if (setsockopt (info -> rfdesc, SOL_SOCKET, SO_ATTACH_FILTER, &p,
+ sizeof p) < 0) {
+ if (errno == ENOPROTOOPT || errno == EPROTONOSUPPORT ||
+ errno == ESOCKTNOSUPPORT || errno == EPFNOSUPPORT ||
+ errno == EAFNOSUPPORT)
+ error ("socket: %m - make sure %s %s!",
+ "CONFIG_PACKET and CONFIG_FILTER are defined",
+ "in your kernel configuration");
+ error ("Can't install packet filter program: %m");
+ }
}
#endif /* USE_LPF_RECEIVE */