When isDefaultGateway is true it automatically sets isGateway to true.
The default route will be added via the (bridge's) gateway IP.
If a default gateway has been configured via IPAM in the same
configuration file, the plugin will error out.
Add a namespace object interface for somewhat cleaner code when
creating and switching between network namespaces. All created
namespaces are now mounted in /var/run/netns to ensure they
have persistent inodes and paths that can be passed around
between plugin components without relying on the current namespace
being correct.
Also remove the thread-locking arguments from the ns package
per https://github.com/appc/cni/issues/183 by doing all the namespace
changes in a separate goroutine that locks/unlocks itself, instead of
the caller having to track OS thread locking.
Previously this code used a run-time map lookup keyed by
runtime.GOOS/GOARCH. This version uses conditional compilation to make
this choice at compile time, giving immediate feedback for unsupported
platforms.
Resolves CNI part of https://github.com/coreos/rkt/issues/1765
Second part would be adding similar lines into kvm flavored macvlan
support (in time of creating macvtap device).
/proc/self/ns/net gives the main thread's namespace, not necessarily
the namespace of the thread that's running the testcases. This causes
sporadic failures of the tests.
For example, with a testcase reading inodes after switching netns:
/proc/27686/task/27689/ns/net 4026532565
/proc/self/ns/net 4026531969
/proc/27686/task/27689/ns/net 4026532565
See also:
008d17ae00
Running Suite: pkg/ns Suite
===========================
Random Seed: 1459953577
Will run 6 of 6 specs
• Failure [0.028 seconds]
Linux namespace operations
/cni/gopath/src/github.com/appc/cni/pkg/ns/ns_test.go:167
WithNetNS
/cni/gopath/src/github.com/appc/cni/pkg/ns/ns_test.go:166
executes the callback within the target network namespace [It]
/cni/gopath/src/github.com/appc/cni/pkg/ns/ns_test.go:97
Expected
<uint64>: 4026531969
to equal
<uint64>: 4026532565
/cni/gopath/src/github.com/appc/cni/pkg/ns/ns_test.go:96
------------------------------
•••••
Summarizing 1 Failure:
[Fail] Linux namespace operations WithNetNS [It] executes the callback within the target network namespace
/cni/gopath/src/github.com/appc/cni/pkg/ns/ns_test.go:96
Ran 6 of 6 Specs in 0.564 seconds
FAIL! -- 5 Passed | 1 Failed | 0 Pending | 0 Skipped --- FAIL: TestNs (0.56s)
FAIL
Previously this code used a run-time map lookup keyed by
runtime.GOOS/GOARCH. This version uses conditional compilation to make
this choice at compile time, giving immediate feedback for unsupported
platforms.
Not using NewLinkAttrs() or not initializing TxQLen leaves
the value as 0, which tells the kernel to set a zero-length
tx_queue_len. That messes up FIFO traffic shapers (like pfifo)
that use the device TX queue length as the default packet
limit. This leads to a default packet limit of 0, which drops
all packets.
