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ddd1ad6882
linux/net
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Johannes Nixdorf ddd1ad6882 net: bridge: Add netlink knobs for number / max learned FDB entries 
The previous patch added accounting and a limit for the number of
dynamically learned FDB entries per bridge. However it did not provide
means to actually configure those bounds or read back the count. This
patch does that.

Two new netlink attributes are added for the accounting and limit of
dynamically learned FDB entries:
 - IFLA_BR_FDB_N_LEARNED (RO) for the number of entries accounted for
   a single bridge.
 - IFLA_BR_FDB_MAX_LEARNED (RW) for the configured limit of entries for
   the bridge.

The new attributes are used like this:

 # ip link add name br up type bridge fdb_max_learned 256
 # ip link add name v1 up master br type veth peer v2
 # ip link set up dev v2
 # mausezahn -a rand -c 1024 v2
 0.01 seconds (90877 packets per second
 # bridge fdb | grep -v permanent | wc -l
 256
 # ip -d link show dev br
 13: br: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 [...]
     [...] fdb_n_learned 256 fdb_max_learned 256

Signed-off-by: Johannes Nixdorf <jnixdorf-oss@avm.de>
Acked-by: Nikolay Aleksandrov <razor@blackwall.org>
Reviewed-by: Ido Schimmel <idosch@nvidia.com>
Link: https://lore.kernel.org/r/20231016-fdb_limit-v5-3-32cddff87758@avm.de
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2023-10-17 17:39:01 -07:00
..
6lowpan
9p net: annotate data-races around sock->ops 2023-08-09 15:32:43 -07:00
802
8021q Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2023-08-18 12:44:56 -07:00
appletalk appletalk: remove special handling code for ipddp 2023-10-13 17:59:32 -07:00
atm sock: Remove ->sendpage*() in favour of sendmsg(MSG_SPLICE_PAGES) 2023-06-24 15:50:13 -07:00
ax25 net: implement lockless SO_PRIORITY 2023-10-01 19:09:54 +01:00
batman-adv Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2023-08-24 10:51:39 -07:00
bluetooth Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2023-10-05 13:16:47 -07:00
bpf bpf: Prevent inlining of bpf_fentry_test7() 2023-08-30 08:36:17 +02:00
bpfilter
bridge net: bridge: Add netlink knobs for number / max learned FDB entries 2023-10-17 17:39:01 -07:00
caif sock: Remove ->sendpage*() in favour of sendmsg(MSG_SPLICE_PAGES) 2023-06-24 15:50:13 -07:00
can Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2023-10-12 17:07:34 -07:00
ceph ceph: Annotate struct ceph_monmap with __counted_by 2023-09-18 10:39:29 +01:00
core net: gso_test: release each segment individually 2023-10-17 11:32:05 +01:00
dcb net: dcb: choose correct policy to parse DCB_ATTR_BCN 2023-08-01 21:07:46 -07:00
dccp tcp: record last received ipv6 flowlabel 2023-10-10 10:02:59 +02:00
devlink Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2023-10-12 17:07:34 -07:00
dns_resolver
dsa net: dsa: remove dsa_port_phylink_validate() 2023-10-11 10:06:05 +01:00
ethernet
ethtool ethtool: Fix mod state of verbose no_mask bitset 2023-10-10 19:48:15 -07:00
handshake handshake: Fix sign of key_serial_t fields 2023-10-02 12:34:21 -07:00
hsr net: hsr: Add __packed to struct hsr_sup_tlv. 2023-09-18 08:26:19 +01:00
ieee802154 sysctl-6.6-rc1 2023-08-29 17:39:15 -07:00
ife
ipv4 bpf-next-for-netdev 2023-10-16 21:05:33 -07:00
ipv6 bpf-next-for-netdev 2023-10-16 21:05:33 -07:00
iucv
kcm kcm: Fix error handling for SOCK_DGRAM in kcm_sendmsg(). 2023-09-14 10:43:51 +02:00
key Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2023-08-18 12:44:56 -07:00
l2tp Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2023-10-05 13:16:47 -07:00
l3mdev
lapb
llc net/llc/llc_conn.c: fix 4 instances of -Wmissing-variable-declarations 2023-08-09 15:34:28 -07:00
mac80211 Merge wireless into wireless-next 2023-10-06 17:08:47 +03:00
mac802154 Core WPAN changes: 2023-06-24 15:41:46 -07:00
mctp mctp: perform route lookups under a RCU read-side lock 2023-10-10 19:43:22 -07:00
mpls networking: Update to register_net_sysctl_sz 2023-08-15 15:26:18 -07:00
mptcp Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2023-10-05 13:16:47 -07:00
ncsi ncsi: Propagate carrier gain/loss events to the NCSI controller 2023-09-18 07:06:05 +01:00
netfilter netfilter: conntrack: prefer tcp_error_log to pr_debug 2023-10-10 16:34:28 +02:00
netlabel netlabel: Remove unused declaration netlbl_cipsov4_doi_free() 2023-08-02 12:28:22 -07:00
netlink netlink: Annotate struct netlink_policy_dump_state with __counted_by 2023-10-06 10:48:46 +01:00
netrom net: implement lockless SO_PRIORITY 2023-10-01 19:09:54 +01:00
nfc nfc: nci: assert requested protocol is valid 2023-10-12 09:32:10 +02:00
nsh net: move gso declarations and functions to their own files 2023-06-10 00:11:41 -07:00
openvswitch net: openvswitch: Annotate struct mask_array with __counted_by 2023-10-17 13:56:03 +02:00
packet Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2023-10-12 17:07:34 -07:00
phonet sock: Remove ->sendpage*() in favour of sendmsg(MSG_SPLICE_PAGES) 2023-06-24 15:50:13 -07:00
psample
qrtr net: qrtr: Handle IPCR control port format of older targets 2023-07-17 09:02:30 +01:00
rds net: prevent address rewrite in kernel_bind() 2023-10-01 19:31:29 +01:00
rfkill rfkill: sync before userspace visibility/changes 2023-09-18 09:36:57 +02:00
rose net: implement lockless SO_PRIORITY 2023-10-01 19:09:54 +01:00
rxrpc Networking changes for 6.5. 2023-06-28 16:43:10 -07:00
sched net, sched: Add tcf_set_drop_reason for {__,}tcf_classify 2023-10-16 10:07:37 -07:00
sctp Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2023-10-05 13:16:47 -07:00
smc Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2023-10-12 17:07:34 -07:00
strparser
sunrpc SUNRPC/TLS: Lock the lower_xprt during the tls handshake 2023-09-27 15:16:40 -04:00
switchdev net: switchdev: Add a helper to replay objects on a bridge port 2023-07-21 08:54:03 +01:00
tipc Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2023-10-05 13:16:47 -07:00
tls tls: use fixed size for tls_offload_context_{tx,rx}.driver_state 2023-10-13 11:26:10 +01:00
unix bpf: Implement cgroup sockaddr hooks for unix sockets 2023-10-11 17:27:47 -07:00
vmw_vsock vsock: enable setting SO_ZEROCOPY 2023-10-15 13:19:42 +01:00
wireless Merge wireless into wireless-next 2023-10-06 17:08:47 +03:00
x25 net: implement lockless SO_PRIORITY 2023-10-01 19:09:54 +01:00
xdp Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2023-10-12 17:07:34 -07:00
xfrm net: dst: remove unnecessary input parameter in dst_alloc and dst_init 2023-09-12 11:42:25 +02:00
compat.c
devres.c
Kconfig net: add skb_segment kunit test 2023-10-11 10:39:01 +01:00
Kconfig.debug
Makefile
socket.c net: prevent address rewrite in kernel_bind() 2023-10-01 19:31:29 +01:00
sysctl_net.c sysctl: Add size to register_net_sysctl function 2023-08-15 15:26:17 -07:00