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pimd: Implement show ip pim bsm-database
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This command shows all the fragments of the last received preferred BSM.
This displayed in readable format.

Sw3# sh ip pim bsm-database
Scope Zone: Global
Number of the fragments: 1

BSM Fragment : 1
------------------
BSR-Address     BSR-Priority    Hashmask-len    Fragment-Tag
30.0.0.100      0               0               3289

Group : 225.1.1.1/32
-------------------
Rp Count:9
Fragment Rp Count : 9
RpAddress     HoldTime     Priority
20.0.0.2        150          0
2.2.2.2         150          0
9.9.9.10        150          0
7.7.2.7         150          0
7.2.2.7         150          0
7.7.9.7         150          0
7.8.9.10        150          0
7.5.2.7         150          0
9.10.9.10       150          0

Group : 226.1.1.1/32
-------------------
Rp Count:1
Fragment Rp Count : 1
RpAddress     HoldTime     Priority
9.9.9.9         150          0

Signed-off-by: Saravanan K <[email protected]>
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@sarav511
sarav511 committed May 15, 2019
1 parent 6bb2ef3 commit 0d1a4e2
Showing 1 changed file with 179 additions and 0 deletions.
179 changes: 179 additions & 0 deletions pimd/pim_cmd.c
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Original file line number Diff line number Diff line change
Expand Up @@ -2865,6 +2865,164 @@ static void pim_show_nexthop(struct pim_instance *pim, struct vty *vty)
hash_walk(pim->rpf_hash, pim_print_pnc_cache_walkcb, &cwd);
}

/* Display the bsm database details */
static void pim_show_bsm_db(struct pim_instance *pim, struct vty *vty, bool uj)
{
struct listnode *bsmnode;
int count = 0;
int fragment = 1;
struct bsm_info *bsm;
json_object *json = NULL;
json_object *json_group = NULL;
json_object *json_row = NULL;

count = pim->global_scope.bsm_list->count;

if (uj) {
json = json_object_new_object();
json_object_int_add(json, "Number of the fragments", count);
} else {
vty_out(vty, "Scope Zone: Global\n");
vty_out(vty, "Number of the fragments: %d\n", count);
vty_out(vty, "\n");
}

for (ALL_LIST_ELEMENTS_RO(pim->global_scope.bsm_list, bsmnode, bsm)) {
char grp_str[INET_ADDRSTRLEN];
char rp_str[INET_ADDRSTRLEN];
char bsr_str[INET_ADDRSTRLEN];
struct bsmmsg_grpinfo *group;
struct bsmmsg_rpinfo *rpaddr;
struct prefix grp;
struct bsm_hdr *hdr;
uint32_t offset = 0;
uint8_t *buf;
uint32_t len = 0;
uint32_t frag_rp_cnt = 0;

buf = bsm->bsm;
len = bsm->size;

/* skip pim header */
buf += PIM_MSG_HEADER_LEN;
len -= PIM_MSG_HEADER_LEN;

hdr = (struct bsm_hdr *)buf;

/* BSM starts with bsr header */
buf += sizeof(struct bsm_hdr);
len -= sizeof(struct bsm_hdr);

pim_inet4_dump("<BSR Address?>", hdr->bsr_addr.addr, bsr_str,
sizeof(bsr_str));


if (uj) {
json_object_string_add(json, "BSR address", bsr_str);
json_object_int_add(json, "BSR priority",
hdr->bsr_prio);
json_object_int_add(json, "Hashmask Length",
hdr->hm_len);
json_object_int_add(json, "Fragment Tag",
ntohs(hdr->frag_tag));
} else {
vty_out(vty, "BSM Fragment : %d\n", fragment);
vty_out(vty, "------------------\n");
vty_out(vty, "%-15s %-15s %-15s %-15s\n", "BSR-Address",
"BSR-Priority", "Hashmask-len", "Fragment-Tag");
vty_out(vty, "%-15s %-15d %-15d %-15d\n", bsr_str,
hdr->bsr_prio, hdr->hm_len,
ntohs(hdr->frag_tag));
}

vty_out(vty, "\n");

while (offset < len) {
group = (struct bsmmsg_grpinfo *)buf;

if (group->group.family == PIM_MSG_ADDRESS_FAMILY_IPV4)
grp.family = AF_INET;

grp.prefixlen = group->group.mask;
grp.u.prefix4.s_addr = group->group.addr.s_addr;

prefix2str(&grp, grp_str, sizeof(grp_str));

buf += sizeof(struct bsmmsg_grpinfo);
offset += sizeof(struct bsmmsg_grpinfo);

if (uj) {
json_object_object_get_ex(json, grp_str,
&json_group);
if (!json_group) {
json_group = json_object_new_object();
json_object_int_add(json_group,
"Rp Count",
group->rp_count);
json_object_int_add(
json_group, "Fragment Rp count",
group->frag_rp_count);
json_object_object_add(json, grp_str,
json_group);
}
} else {
vty_out(vty, "Group : %s\n", grp_str);
vty_out(vty, "-------------------\n");
vty_out(vty, "Rp Count:%d\n", group->rp_count);
vty_out(vty, "Fragment Rp Count : %d\n",
group->frag_rp_count);
}

frag_rp_cnt = group->frag_rp_count;

if (!frag_rp_cnt)
continue;

if (!uj)
vty_out(vty,
"RpAddress HoldTime Priority\n");

while (frag_rp_cnt--) {
rpaddr = (struct bsmmsg_rpinfo *)buf;

buf += sizeof(struct bsmmsg_rpinfo);
offset += sizeof(struct bsmmsg_rpinfo);

pim_inet4_dump("<Rp addr?>",
rpaddr->rpaddr.addr, rp_str,
sizeof(rp_str));

if (uj) {
json_row = json_object_new_object();
json_object_string_add(
json_row, "Rp Address", rp_str);
json_object_int_add(
json_row, "Rp HoldTime",
ntohs(rpaddr->rp_holdtime));
json_object_int_add(json_row,
"Rp Priority",
rpaddr->rp_pri);
json_object_object_add(
json_group, rp_str, json_row);
} else {
vty_out(vty, "%-15s %-12d %d\n", rp_str,
ntohs(rpaddr->rp_holdtime),
rpaddr->rp_pri);
}
}
vty_out(vty, "\n");
}

fragment++;
}

if (uj) {
vty_out(vty, "%s\n", json_object_to_json_string_ext(
json, JSON_C_TO_STRING_PRETTY));
json_object_free(json);
}
}

static void igmp_show_groups(struct pim_instance *pim, struct vty *vty, bool uj)
{
struct interface *ifp;
Expand Down Expand Up @@ -4512,6 +4670,26 @@ DEFUN (show_ip_pim_interface_traffic,
return CMD_SUCCESS;
}

DEFUN (show_ip_pim_bsm_db,
show_ip_pim_bsm_db_cmd,
"show ip pim bsm-database [vrf NAME] [json]",
SHOW_STR
IP_STR
PIM_STR
VRF_CMD_HELP_STR
"PIM cached bsm packets information\n"
JSON_STR)
{
int idx = 2;
struct vrf *vrf = pim_cmd_lookup_vrf(vty, argv, argc, &idx);
bool uj = use_json(argc, argv);

if (!vrf)
return CMD_WARNING;

pim_show_bsm_db(vrf->info, vty, uj);
return CMD_SUCCESS;
}
static void show_multicast_interfaces(struct pim_instance *pim, struct vty *vty)
{
struct interface *ifp;
Expand Down Expand Up @@ -9555,6 +9733,7 @@ void pim_cmd_init(void)
install_element(VIEW_NODE, &show_debugging_pim_cmd);
install_element(VIEW_NODE, &show_ip_pim_nexthop_cmd);
install_element(VIEW_NODE, &show_ip_pim_nexthop_lookup_cmd);
install_element(VIEW_NODE, &show_ip_pim_bsm_db_cmd);

install_element(ENABLE_NODE, &clear_ip_interfaces_cmd);
install_element(ENABLE_NODE, &clear_ip_igmp_interfaces_cmd);
Expand Down

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