summaryrefslogtreecommitdiff
path: root/COPYING
diff options
context:
space:
mode:
authorMatteo Croce <mcroce@redhat.com>2018-08-21 16:38:09 +0200
committerTobias Klauser <tklauser@distanz.ch>2018-08-22 10:21:37 +0200
commitc7c176394ad2b87f56b0aed2731eb9dde29750f0 (patch)
tree1c423f98bc7ac52feb134044efeed38ccc6d0507 /COPYING
parent01f339a7bb170310f9dd6a389d9c89b6c62032d0 (diff)
mausezahn: improve random mac address generation
Modify -b option to generate all random MAC addresses. Improve the random generation algorithm, use nrand48() which fills the ethernet address in two calls instead of six calls to rand() and six floating point calculations. Set the locally administered bit of generated MAC addresses. Signed-off-by: Matteo Croce <mcroce@redhat.com> Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
Diffstat (limited to 'COPYING')
0 files changed, 0 insertions, 0 deletions
generated by cgit v1.2.3-54-g00ecf (git 2.39.0) at 2025-09-17 15:27:05 +0000
le. Patch 5 prints IPv6 addresses in compressed format when showing route replace errors. This was noticed testing REPLACE failures. The end result for multipath routes: 1. Dump - RTA_MULTIPATH used for multipath routes $ ip -6 ro ls vrf red 2001:db8:1::/120 dev eth1 proto kernel metric 256 pref medium 2001:db8:2::/120 dev eth2 proto kernel metric 256 pref medium 2001:db8:200::/120 metric 1024 nexthop via 2001:db8:1::2 dev eth1 weight 1 nexthop via 2001:db8:2::2 dev eth2 weight 1 ... 2. Route Add - one notification with RTA_MULTIPATH attribute $ ip -6 ro add vrf red 2001:db8:200::/120 nexthop via 2001:db8:1::2 nexthop via 2001:db8:2::2 $ ip mon route 2001:db8:200::/120 table red metric 1024 nexthop via 2001:db8:1::2 dev eth1 weight 1 nexthop via 2001:db8:2::2 dev eth2 weight 1 2. Route Replace - one notification with RTA_MULTIPATH attribute $ ip -6 ro replace vrf red 2001:db8:200::/120 nexthop via 2001:db8:1::16 nexthop via 2001:db8:2::16 $ ip mon route Replaced 2001:db8:200::/120 table red metric 1024 nexthop via 2001:db8:1::16 dev eth1 weight 1 nexthop via 2001:db8:2::16 dev eth2 weight 1 - on a failure after the insertion of the first nexthop (which means the original route has been replaced in the FIB), a notification is sent with the successful nexthops and then the nexthops are deleted with one notification per hop. This is consistent with how it works today except the successful additions are coalesced into 1 notification. 3. Route Delete - delete of entire multipath route using prefix/length only 1 notification is generated: $ ip -6 ro del vrf red 2001:db8:200::/120 $ ip mon route Deleted 2001:db8:200::/120 table red metric 1024 nexthop via 2001:db8:1::16 dev eth1 weight 1 nexthop via 2001:db8:2::16 dev eth2 weight 1 - if a delete request contains nexthops one notification is generated per nexthop deleted. This is unavoidable since IPv6 alllows a single nexthop to be deleted within a multipath route 4. Route Appends - IPv6 allows nexthops to be appended to an existing route. In this case one notification is sent for the new route with the append flag set. $ ip -6 ro append vrf red 2001:db8:200::/120 nexthop via 2001:db8:2::20 nexthop via 2001:db8:1::20 $ ip mon route Append 2001:db8:200::/120 table red metric 1024 nexthop via 2001:db8:1::2 dev eth1 weight 1 nexthop via 2001:db8:2::2 dev eth2 weight 1 nexthop via 2001:db8:2::20 dev eth2 weight 1 nexthop via 2001:db8:1::20 dev eth1 weight 1 - on failure of an append, a notification is sent with the route containing all of the nexthops successfully added, and it is followed by delete notifications as the hops are removed returning the route to its prior state. This is consistent with how it works today except the successful additions are coalesced into 1 notification. Addresses some of the inconsistencies also noted by Roopa at netdev0.1: https://www.netdev01.org/docs/prabhu-linux_ipv4_ipv6_inconsistencies_talk_slides.pdf v4 - changed series to do encoding in 1 patch and updating notificatons in separate patches to make it easier to review and understand - 1 notification for delete when using prefix/length; 1 notification for append - handle delete of a single nexthop without RTA_MULTIPATH in delete request - upated commit messages and cover letter v3 - removed the need for a user API to opt-in to change. Requiring an API just shifts the difference from same API with different behavior to different API to achieve equivalent behavior - route notifications changed to use RTA_MULTIPATH for add and replace - upated commit messages and cover letter v2 - fixed locking in patch 1 as noted by DaveM - changed user API for patch 2 to require an rtmsg with RTM_F_ALL_NEXTHOPS set in rtm_flags - revamped explanation of patch 2 and cover letter ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include')
-rw-r--r--include/net/ip6_fib.h4
-rw-r--r--include/net/netlink.h1
2 files changed, 4 insertions, 1 deletions
diff --git a/include/net/ip6_fib.h b/include/net/ip6_fib.h