From: Peter Nørlund
The current multipath attempted to be quasi random, but in most cases it
behaved just like a round robin balancing. This patch refactors the
algorithm to be exactly that and in doing so, avoids the spin lock.
The new design paves the way for hash-based multipath, replacing th
From: Peter Nørlund
This patch adds L3 and L4 hash-based multipath routing, selectable on a
per-route basis with the reintroduced RTA_MP_ALGO attribute. The default is
now RT_MP_ALG_L3_HASH.
Signed-off-by: Peter Nørlund
---
include/net/ip_fib.h | 22 -
include/uapi/li
From: Peter Nørlund
When doing L3 based multipath, ICMP packets are inspected to let them route
over the same path as the flow they relate to, allowing anycast
environments to work with ECMP.
Signed-off-by: Peter Nørlund
---
include/net/ip_fib.h | 2 +-
include/net/route.h | 12 +
When the routing cache was removed in 3.6, the IPv4 multipath algorithm changed
from more or less being destination-based into being quasi-random per-packet
scheduling. This increases the risk of out-of-order packets and makes it
impossible to use multipath together with anycast services.
This pat
