mirror/freebsd
1
0
Fork 0
mirror of https://git.FreeBSD.org/src.git synced 2025-01-27 16:39:08 +00:00
Code Issues Releases Activity

Add BPF support to HARP network interfaces. This allows one to see

Browse Source 
the traffic on LLC multiplexed connections (like CLIP).

PR:		kern/51831
Submitted by:	Vincent Jardin <vjardin@wanadoo.fr>
MFC after:	2 weeks
This commit is contained in:
Hartmut Brandt 2003-07-24 08:15:20 +00:00
parent c24297c0f2
commit 5be9a825e2
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=117960
3 changed files with 37 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

12
sys/netatm/atm_cm.c
View File

@ -41,6 +41,7 @@ __FBSDID("$FreeBSD$");
#include <sys/socketvar.h>
#include <sys/syslog.h>
#include <net/if.h>
#include <net/bpf.h>
#include <netatm/port.h>
#include <netatm/queue.h>
#include <netatm/atm.h>
@ -2899,6 +2900,17 @@ atm_cm_cpcs_upper(cmd, tok, arg1, arg2)
break;
case ATM_ENC_LLC:
/*
* Send the packet to the interface's bpf if this
* vc has one.
*/
if (cvp->cvc_vcc != NULL &&
cvp->cvc_vcc->vc_nif != NULL) {
struct ifnet *ifp =
(struct ifnet *)cvp->cvc_vcc->vc_nif;
BPF_MTAP(ifp, m);
}
/*
* Find connection with matching LLC header
*/

12
sys/netatm/atm_device.c
View File

@ -42,6 +42,7 @@ __FBSDID("$FreeBSD$");
#include <sys/socketvar.h>
#include <sys/syslog.h>
#include <net/if.h>
#include <net/bpf.h>
#include <netatm/port.h>
#include <netatm/queue.h>
#include <netatm/atm.h>
@ -370,6 +371,17 @@ atm_dev_lower(cmd, tok, arg1, arg2)
break;
}
/*
* Send the packet to the interface's bpf if this vc has one.
*/
if (cvcp->cvc_conn->co_mpx == ATM_ENC_LLC &&
cvcp->cvc_vcc && cvcp->cvc_vcc->vc_nif) {
struct ifnet *ifp =
(struct ifnet *)cvcp->cvc_vcc->vc_nif;
BPF_MTAP(ifp, (KBuffer *)arg1);
}
/*
* Hand the data off to the device
*/

13
sys/netatm/atm_if.c
View File

@ -44,6 +44,7 @@ __FBSDID("$FreeBSD$");
#include <net/if_types.h>
#include <net/if_dl.h>
#include <net/route.h>
#include <net/bpf.h>
#include <netinet/in.h>
#include <netinet/in_var.h>
#include <netatm/port.h>
@ -776,6 +777,13 @@ atm_nif_attach(nip)
*/
if_attach(ifp);
/*
* Add to BPF interface list
* DLT_ATM_RFC_1483 cannot be used because both NULL and LLC/SNAP could
* be provisioned
*/
bpfattach(ifp, DLT_ATM_CLIP, T_ATM_LLC_MAX_LEN);
/*
* Add to physical interface list
*/
@ -838,6 +846,11 @@ atm_nif_detach(nip)
(void) (*ncp->ncm_stat)(NCM_DETACH, nip, 0);
}
/*
* Remove from BPF interface list
*/
bpfdetach(ifp);
/*
* Mark interface down
*/