On 10/18/23 10:04, Johannes Nixdorf wrote:
Support setting the FDB limit through ip link. The arguments is: - fdb_max_learned: A 32-bit unsigned integer specifying the maximum number of learned FDB entries, with 0 disabling the limit.Also support reading back the current number of learned FDB entries in the bridge by this count. The returned value's name is: - fdb_n_learned: A 32-bit unsigned integer specifying the current number of learned FDB entries. Example: # ip -d -j -p link show br0 [ { ... "linkinfo": { "info_kind": "bridge", "info_data": { ... "fdb_n_learned": 2, "fdb_max_learned": 0, ... } }, ... } ] # ip link set br0 type bridge fdb_max_learned 1024 # ip -d -j -p link show br0 [ { ... "linkinfo": { "info_kind": "bridge", "info_data": { ... "fdb_n_learned": 2, "fdb_max_learned": 1024, ... } }, ... } ] Signed-off-by: Johannes Nixdorf <jnixdorf-...@avm.de> --- The corresponding kernel changes are in net-next.git as commit ddd1ad68826d ("net: bridge: Add netlink knobs for number / max learned FDB entries"). --- Changes in v5: - Removed the RFC status again, as the kernel changes landed. - Link to v4: https://lore.kernel.org/r/20230919-fdb_limit-v4-1-b4d2dc4df...@avm.de Changes in v4: - Removed _entries from the names. (from review) - Removed the UAPI change, to be synced from linux separately by the maintainer. (from review) For local testing e.g. `make CCOPTS="-O2 -pipe -I${path_to_dev_kernel_headers}"` works as a workaround. - Downgraded to an RFC until the kernel changes land. - Link to v3: https://lore.kernel.org/netdev/20230905-fdb_limit-v3-1-34bb12455...@avm.de/ Changes in v3: - Properly split the net-next and iproute2-next threads. (from review) - Changed to *_n_* instead of *_cur_*. (from review) - Use strcmp() instead of matches(). (from review) - Made names in code and documentation consistent. (from review) - Various documentation fixes. (from review) - Link to v2: https://lore.kernel.org/netdev/20230619071444.14625-1-jnixdorf-...@avm.de/ Changes in v2: - Sent out the first corresponding iproute2 patches. - Link to v1: https://lore.kernel.org/netdev/20230515085046.4457-1-jnixdorf-...@avm.de/ --- ip/iplink_bridge.c | 21 +++++++++++++++++++++ man/man8/ip-link.8.in | 10 ++++++++++ 2 files changed, 31 insertions(+)
Acked-by: Nikolay Aleksandrov <ra...@blackwall.org>
