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pimd: interface commands to enable/disable bsm processing

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(intf)ip pim bsm - to enable bsm processing on the interface
(intf)no ip pim bsm - to disable bsm processing on the interface
(intf)ip pim unicast-bsm - to enable ucast bsm processing on the interface
(intf)no ip pim unicast-bsm - to disable ucast bsm processing on the interface

Note: bsm processing and ucast bsm processing is enabled by default on a
pim interface. The CLI is implemented as a security feature as recommended by
RFC 5059

Signed-off-by: Saravanan K <saravanank@vmware.com>
This commit is contained in:
saravanank 2019-05-02 08:04:47 -07:00
parent 025725f70d
commit 16c926c85d
4 changed files with 117 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

15
pimd/pim_bsm.c
View File

@ -22,7 +22,6 @@
#include "if.h"
#include "pimd.h"
#include "pim_iface.h"
#include "pim_cmd.h"
#include "pim_instance.h"
#include "pim_rpf.h"
#include "pim_hello.h"
@ -36,6 +35,20 @@ static void pim_bs_timer_start(struct bsm_scope *scope, int bs_timeout);
static int pim_on_bs_timer(struct thread *t);
static void pim_bs_timer_stop(struct bsm_scope *scope);
/* pim_bsm_write_config - Write the interface pim bsm configuration.*/
void
pim_bsm_write_config(struct vty *vty, struct interface *ifp)
{
struct pim_interface *pim_ifp = ifp->info;
if (pim_ifp) {
if (!pim_ifp->bsm_enable)
vty_out(vty, " no ip pim bsm\n");
if (!pim_ifp->ucast_bsm_accept)
vty_out(vty, " no ip pim unicast-bsm\n");
}
}
static void pim_free_bsgrp_data(struct bsgrp_node * bsgrp_node)
{
if (bsgrp_node->bsrp_list)

2
pimd/pim_bsm.h
View File

@ -187,5 +187,5 @@ struct bsmmsg_rpinfo {
/* API */
void pim_bsm_proc_init(struct pim_instance *pim);
void pim_bsm_proc_free(struct pim_instance *pim);
void pim_bsm_write_config(struct vty *vty, struct interface *ifp);
#endif

93
pimd/pim_cmd.c
View File

@ -7755,6 +7755,94 @@ DEFUN (no_ip_pim_bfd,
return CMD_SUCCESS;
}
DEFUN (ip_pim_bsm,
ip_pim_bsm_cmd,
"ip pim bsm",
IP_STR
PIM_STR
"Enables BSM support on the interface\n")
{
VTY_DECLVAR_CONTEXT(interface, ifp);
struct pim_interface *pim_ifp = ifp->info;
if (!pim_ifp) {
if (!pim_cmd_interface_add(ifp)) {
vty_out(vty, "Could not enable PIM SM on interface\n");
return CMD_WARNING;
}
}
pim_ifp = ifp->info;
pim_ifp->bsm_enable = true;
return CMD_SUCCESS;
}
DEFUN (no_ip_pim_bsm,
no_ip_pim_bsm_cmd,
"no ip pim bsm",
NO_STR
IP_STR
PIM_STR
"Disables BSM support\n")
{
VTY_DECLVAR_CONTEXT(interface, ifp);
struct pim_interface *pim_ifp = ifp->info;
if (!pim_ifp) {
vty_out(vty, "Pim not enabled on this interface\n");
return CMD_WARNING;
}
pim_ifp->bsm_enable = false;
return CMD_SUCCESS;
}
DEFUN (ip_pim_ucast_bsm,
ip_pim_ucast_bsm_cmd,
"ip pim unicast-bsm",
IP_STR
PIM_STR
"Accept/Send unicast BSM on the interface\n")
{
VTY_DECLVAR_CONTEXT(interface, ifp);
struct pim_interface *pim_ifp = ifp->info;
if (!pim_ifp) {
if (!pim_cmd_interface_add(ifp)) {
vty_out(vty, "Could not enable PIM SM on interface\n");
return CMD_WARNING;
}
}
pim_ifp = ifp->info;
pim_ifp->ucast_bsm_accept = true;
return CMD_SUCCESS;
}
DEFUN (no_ip_pim_ucast_bsm,
no_ip_pim_ucast_bsm_cmd,
"no ip pim unicast-bsm",
NO_STR
IP_STR
PIM_STR
"Block send/receive unicast BSM on this interface\n")
{
VTY_DECLVAR_CONTEXT(interface, ifp);
struct pim_interface *pim_ifp = ifp->info;
if (!pim_ifp) {
vty_out(vty, "Pim not enabled on this interface\n");
return CMD_WARNING;
}
pim_ifp->ucast_bsm_accept = false;
return CMD_SUCCESS;
}
#if HAVE_BFDD > 0
DEFUN_HIDDEN(
#else
@ -9487,6 +9575,11 @@ void pim_cmd_init(void)
install_element(VIEW_NODE, &show_ip_pim_vxlan_sg_work_cmd);
install_element(INTERFACE_NODE, &interface_pim_use_source_cmd);
install_element(INTERFACE_NODE, &interface_no_pim_use_source_cmd);
/* Install BSM command */
install_element(INTERFACE_NODE, &ip_pim_bsm_cmd);
install_element(INTERFACE_NODE, &no_ip_pim_bsm_cmd);
install_element(INTERFACE_NODE, &ip_pim_ucast_bsm_cmd);
install_element(INTERFACE_NODE, &no_ip_pim_ucast_bsm_cmd);
/* Install BFD command */
install_element(INTERFACE_NODE, &ip_pim_bfd_cmd);
install_element(INTERFACE_NODE, &ip_pim_bfd_param_cmd);

9
pimd/pim_vty.c
View File

@ -39,6 +39,7 @@
#include "pim_msdp.h"
#include "pim_ssm.h"
#include "pim_bfd.h"
#include "pim_bsm.h"
#include "pim_vxlan.h"
int pim_debug_config_write(struct vty *vty)
@ -120,6 +121,11 @@ int pim_debug_config_write(struct vty *vty)
++writes;
}
if (PIM_DEBUG_BSM) {
vty_out(vty, "debug pim bsm\n");
++writes;
}
if (PIM_DEBUG_VXLAN) {
vty_out(vty, "debug pim vxlan\n");
++writes;
@ -383,7 +389,10 @@ int pim_interface_config_write(struct vty *vty)
writes +=
pim_static_write_mroute(pim, vty, ifp);
pim_bsm_write_config(vty, ifp);
++writes;
pim_bfd_write_config(vty, ifp);
++writes;
}
vty_endframe(vty, "!\n");
++writes;