From: Ido Schimmel <ido...@nvidia.com>
This is a complementary series to the one merged in commit 389cb1ecc86e
("Merge branch 'add-notifications-when-route-hardware-flags-change'").
The previous series added RTM_NEWROUTE notifications to user space
whenever a route was successfully installed in hardware or when its
state in hardware changed. This allows routing daemons to delay
advertisement of routes until they are installed in hardware.
However, if route installation failed, a routing daemon will wait
indefinitely for a notification that will never come. The aim of this
series is to provide a failure notification via a new flag
(RTM_F_OFFLOAD_FAILED) in the RTM_NEWROUTE message. Upon such a
notification a routing daemon may decide to withdraw the route from the
FIB.
Series overview:
Patch #1 adds the new RTM_F_OFFLOAD_FAILED flag
Patches #2-#3 and #4-#5 add failure notifications to IPv4 and IPv6,
respectively
Patches #6-#8 teach netdevsim to fail route installation via a new knob
in debugfs
Patch #9 extends mlxsw to mark routes with the new flag
Patch #10 adds test cases for the new notification over netdevsim
Amit Cohen (9):
rtnetlink: Add RTM_F_OFFLOAD_FAILED flag
IPv4: Add "offload failed" indication to routes
IPv4: Extend 'fib_notify_on_flag_change' sysctl
IPv6: Add "offload failed" indication to routes
IPv6: Extend 'fib_notify_on_flag_change' sysctl
netdevsim: fib: Do not warn if route was not found for several events
netdevsim: fib: Add debugfs to debug route offload failure
mlxsw: spectrum_router: Set offload_failed flag
selftests: netdevsim: Test route offload failure notifications
Ido Schimmel (1):
netdevsim: dev: Initialize FIB module after debugfs
Documentation/networking/ip-sysctl.rst | 6 +-
.../ethernet/mellanox/mlxsw/spectrum_router.c | 58 +++++++-
drivers/net/netdevsim/dev.c | 40 +++---
drivers/net/netdevsim/fib.c | 123 +++++++++++++++-
include/net/ip6_fib.h | 5 +-
include/net/ip_fib.h | 3 +-
include/uapi/linux/rtnetlink.h | 5 +
net/ipv4/fib_lookup.h | 3 +-
net/ipv4/fib_semantics.c | 3 +
net/ipv4/fib_trie.c | 13 +-
net/ipv4/route.c | 1 +
net/ipv4/sysctl_net_ipv4.c | 2 +-
net/ipv6/route.c | 14 +-
net/ipv6/sysctl_net_ipv6.c | 2 +-
.../net/netdevsim/fib_notifications.sh | 134 +++++++++++++++++-
15 files changed, 372 insertions(+), 40 deletions(-)
--
2.29.2
