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https://github.com/torvalds/linux
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1214628cb1
Fdb's used and updated fields are written to on every packet forward and packet receive respectively. Thus if we are receiving packets from a particular fdb, they'll cause false-sharing with everyone who has looked it up (even if it didn't match, since mac/vid share cache line!). The "used" field is even worse since it is updated on every packet forward to that fdb, thus the standard config where X ports use a single gateway results in 100% fdb false-sharing. Note that this patch does not prevent the last scenario, but it makes it better for other bridge participants which are not using that fdb (and are only doing lookups over it). The point is with this move we make sure that only communicating parties get the false-sharing, in a later patch we'll show how to avoid that too. Signed-off-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com> Signed-off-by: David S. Miller <davem@davemloft.net> |
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| .. | ||
| netfilter | ||
| br.c | ||
| br_device.c | ||
| br_fdb.c | ||
| br_forward.c | ||
| br_if.c | ||
| br_input.c | ||
| br_ioctl.c | ||
| br_mdb.c | ||
| br_multicast.c | ||
| br_netfilter_hooks.c | ||
| br_netfilter_ipv6.c | ||
| br_netlink.c | ||
| br_netlink_tunnel.c | ||
| br_nf_core.c | ||
| br_private.h | ||
| br_private_stp.h | ||
| br_private_tunnel.h | ||
| br_stp.c | ||
| br_stp_bpdu.c | ||
| br_stp_if.c | ||
| br_stp_timer.c | ||
| br_switchdev.c | ||
| br_sysfs_br.c | ||
| br_sysfs_if.c | ||
| br_vlan.c | ||
| br_vlan_tunnel.c | ||
| Kconfig | ||
| Makefile | ||