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authorThomas Karlsson <thomas.karlsson@paneda.se>2020-12-02 19:49:58 +0100
committerJakub Kicinski <kuba@kernel.org>2020-12-03 08:21:29 -0800
commitd4bff72c8401e6f56194ecf455db70ebc22929e2 (patch)
tree6fd44a6c6afc0784de37e344ea1f138134927b96 /tools/include/uapi
parentcec85994c6b4fa6beb5de61dcd03e23001b9deb5 (diff)
downloadlinux-d4bff72c8401e6f56194ecf455db70ebc22929e2.tar.bz2
macvlan: Support for high multicast packet rate
Background: Broadcast and multicast packages are enqueued for later processing. This queue was previously hardcoded to 1000. This proved insufficient for handling very high packet rates. This resulted in packet drops for multicast. While at the same time unicast worked fine. The change: This patch make the queue length adjustable to accommodate for environments with very high multicast packet rate. But still keeps the default value of 1000 unless specified. The queue length is specified as a request per macvlan using the IFLA_MACVLAN_BC_QUEUE_LEN parameter. The actual used queue length will then be the maximum of any macvlan connected to the same port. The actual used queue length for the port can be retrieved (read only) by the IFLA_MACVLAN_BC_QUEUE_LEN_USED parameter for verification. This will be followed up by a patch to iproute2 in order to adjust the parameter from userspace. Signed-off-by: Thomas Karlsson <thomas.karlsson@paneda.se> Link: https://lore.kernel.org/r/dd4673b2-7eab-edda-6815-85c67ce87f63@paneda.se Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'tools/include/uapi')
-rw-r--r--tools/include/uapi/linux/if_link.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/tools/include/uapi/linux/if_link.h b/tools/include/uapi/linux/if_link.h
index 781e482dc499..d208b2af697f 100644
--- a/tools/include/uapi/linux/if_link.h
+++ b/tools/include/uapi/linux/if_link.h
@@ -409,6 +409,8 @@ enum {
IFLA_MACVLAN_MACADDR,
IFLA_MACVLAN_MACADDR_DATA,
IFLA_MACVLAN_MACADDR_COUNT,
+ IFLA_MACVLAN_BC_QUEUE_LEN,
+ IFLA_MACVLAN_BC_QUEUE_LEN_USED,
__IFLA_MACVLAN_MAX,
};