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Message-ID: <82cb1211d85e02e6247cb9a141aad68027cbefac.1675705077.git.petrm@nvidia.com>
Date: Mon, 6 Feb 2023 18:50:26 +0100
From: Petr Machata <petrm@...dia.com>
To: <netdev@...r.kernel.org>, <dsahern@...il.com>,
<stephen@...workplumber.org>
CC: Nikolay Aleksandrov <razor@...ckwall.org>,
Ido Schimmel <idosch@...dia.com>,
Petr Machata <petrm@...dia.com>
Subject: [PATCH iproute2-next 2/3] bridge: Add support for mcast_n_groups, mcast_max_groups
A total of four new bridge attributes are being added to the kernel:
mcast_n_groups and mcast_max_groups, as link and vlan attributes. Add
to the bridge tool the support code to enable setting and querying
these attributes. Example usage:
# ip link add name br up type bridge vlan_filtering 1 mcast_snooping 1 \
mcast_vlan_snooping 1 mcast_querier 1
# ip link set dev v1 master br
# bridge vlan add dev v1 vid 2
# bridge vlan set dev v1 vid 1 mcast_max_groups 1
# bridge mdb add dev br port v1 grp 230.1.2.3 temp vid 1
# bridge mdb add dev br port v1 grp 230.1.2.4 temp vid 1
Error: bridge: Port-VLAN is already in 1 groups, and mcast_max_groups=1.
# bridge link set dev v1 mcast_max_groups 1
# bridge mdb add dev br port v1 grp 230.1.2.3 temp vid 2
Error: bridge: Port is already in 1 groups, and mcast_max_groups=1.
# bridge -d link show
5: v1@v2: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 master br [...]
[...] mcast_n_groups 1 mcast_max_groups 1
# bridge -d vlan show
port vlan-id
br 1 PVID Egress Untagged
state forwarding mcast_router 1
v1 1 PVID Egress Untagged
[...] mcast_n_groups 1 mcast_max_groups 1
2
[...] mcast_n_groups 0 mcast_max_groups 0
This is how the JSON dump looks like:
# bridge -j -d link show dev v1 | jq
[
{
"ifindex": 4,
"link": "v2",
"ifname": "v1",
"flags": [
"BROADCAST",
"MULTICAST"
],
"mtu": 1500,
"master": "br",
"state": "disabled",
"priority": 32,
"cost": 2,
"hairpin": false,
"guard": false,
"root_block": false,
"fastleave": false,
"learning": true,
"flood": true,
"mcast_flood": true,
"bcast_flood": true,
"mcast_router": 1,
"mcast_to_unicast": false,
"neigh_suppress": false,
"vlan_tunnel": false,
"isolated": false,
"locked": false,
"mab": false,
"mcast_n_groups": 0,
"mcast_max_groups": 0
}
]
# bridge -j -d vlan show dev v1 | jq
[
{
"ifname": "v1",
"vlans": [
{
"vlan": 1,
"flags": [
"PVID",
"Egress Untagged"
],
"state": "forwarding",
"mcast_router": 1,
"mcast_n_groups": 0,
"mcast_max_groups": 1
}
]
}
]
Signed-off-by: Petr Machata <petrm@...dia.com>
---
bridge/link.c | 21 +++++++++++++++++++++
bridge/vlan.c | 20 ++++++++++++++++++++
2 files changed, 41 insertions(+)
diff --git a/bridge/link.c b/bridge/link.c
index 337731dff26b..9dd7475d6e4a 100644
--- a/bridge/link.c
+++ b/bridge/link.c
@@ -187,6 +187,18 @@ static void print_protinfo(FILE *fp, struct rtattr *attr)
if (prtb[IFLA_BRPORT_MAB])
print_on_off(PRINT_ANY, "mab", "mab %s ",
rta_getattr_u8(prtb[IFLA_BRPORT_MAB]));
+ if (prtb[IFLA_BRPORT_MCAST_N_GROUPS]) {
+ struct rtattr *at = prtb[IFLA_BRPORT_MCAST_N_GROUPS];
+
+ print_uint(PRINT_ANY, "mcast_n_groups",
+ "mcast_n_groups %u ", rta_getattr_u32(at));
+ }
+ if (prtb[IFLA_BRPORT_MCAST_MAX_GROUPS]) {
+ struct rtattr *at = prtb[IFLA_BRPORT_MCAST_MAX_GROUPS];
+
+ print_uint(PRINT_ANY, "mcast_max_groups",
+ "mcast_max_groups %u ", rta_getattr_u32(at));
+ }
} else
print_stp_state(rta_getattr_u8(attr));
}
@@ -282,6 +294,7 @@ static void usage(void)
" [ mcast_flood {on | off} ]\n"
" [ bcast_flood {on | off} ]\n"
" [ mcast_to_unicast {on | off} ]\n"
+ " [ mcast_max_groups MAX_GROUPS ]\n"
" [ neigh_suppress {on | off} ]\n"
" [ vlan_tunnel {on | off} ]\n"
" [ isolated {on | off} ]\n"
@@ -317,6 +330,7 @@ static int brlink_modify(int argc, char **argv)
__s8 mcast_flood = -1;
__s8 bcast_flood = -1;
__s8 mcast_to_unicast = -1;
+ __s32 max_groups = -1;
__s8 locked = -1;
__s8 macauth = -1;
__s8 isolated = -1;
@@ -389,6 +403,10 @@ static int brlink_modify(int argc, char **argv)
mcast_to_unicast = parse_on_off("mcast_to_unicast", *argv, &ret);
if (ret)
return ret;
+ } else if (strcmp(*argv, "mcast_max_groups") == 0) {
+ NEXT_ARG();
+ if (get_s32(&max_groups, *argv, 0))
+ invarg("invalid mcast_max_groups", *argv);
} else if (strcmp(*argv, "cost") == 0) {
NEXT_ARG();
cost = atoi(*argv);
@@ -505,6 +523,9 @@ static int brlink_modify(int argc, char **argv)
if (mcast_to_unicast >= 0)
addattr8(&req.n, sizeof(req), IFLA_BRPORT_MCAST_TO_UCAST,
mcast_to_unicast);
+ if (max_groups >= 0)
+ addattr32(&req.n, sizeof(req), IFLA_BRPORT_MCAST_MAX_GROUPS,
+ max_groups);
if (learning >= 0)
addattr8(&req.n, sizeof(req), IFLA_BRPORT_LEARNING, learning);
if (learning_sync >= 0)
diff --git a/bridge/vlan.c b/bridge/vlan.c
index 13df1e845ea5..44e1ba39f01d 100644
--- a/bridge/vlan.c
+++ b/bridge/vlan.c
@@ -37,6 +37,7 @@ static void usage(void)
" [ self ] [ master ]\n"
" bridge vlan { set } vid VLAN_ID dev DEV [ state STP_STATE ]\n"
" [ mcast_router MULTICAST_ROUTER ]\n"
+ " [ mcast_max_groups MAX_GROUPS ]\n"
" bridge vlan { show } [ dev DEV ] [ vid VLAN_ID ]\n"
" bridge vlan { tunnelshow } [ dev DEV ] [ vid VLAN_ID ]\n"
" bridge vlan global { set } vid VLAN_ID dev DEV\n"
@@ -344,6 +345,15 @@ static int vlan_option_set(int argc, char **argv)
addattr8(&req.n, sizeof(req),
BRIDGE_VLANDB_ENTRY_MCAST_ROUTER,
mcast_router);
+ } else if (strcmp(*argv, "mcast_max_groups") == 0) {
+ __u32 max_groups;
+
+ NEXT_ARG();
+ if (get_u32(&max_groups, *argv, 0))
+ invarg("invalid mcast_max_groups", *argv);
+ addattr32(&req.n, sizeof(req),
+ BRIDGE_VLANDB_ENTRY_MCAST_MAX_GROUPS,
+ max_groups);
} else {
if (matches(*argv, "help") == 0)
NEXT_ARG();
@@ -1021,6 +1031,16 @@ static void print_vlan_opts(struct rtattr *a, int ifindex)
print_uint(PRINT_ANY, "mcast_router", "mcast_router %u ",
rta_getattr_u8(vattr));
}
+ if (vtb[BRIDGE_VLANDB_ENTRY_MCAST_N_GROUPS]) {
+ vattr = vtb[BRIDGE_VLANDB_ENTRY_MCAST_N_GROUPS];
+ print_uint(PRINT_ANY, "mcast_n_groups", "mcast_n_groups %u ",
+ rta_getattr_u32(vattr));
+ }
+ if (vtb[BRIDGE_VLANDB_ENTRY_MCAST_MAX_GROUPS]) {
+ vattr = vtb[BRIDGE_VLANDB_ENTRY_MCAST_MAX_GROUPS];
+ print_uint(PRINT_ANY, "mcast_max_groups", "mcast_max_groups %u ",
+ rta_getattr_u32(vattr));
+ }
print_nl();
if (show_stats)
__print_one_vlan_stats(&vstats);
--
2.39.0
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