Implement basic `route get` functionality #13
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This provides the basic functionality of the iproute2 `route get` command. It allows you to query netlink for the route to a destination IP.Net While implementing I noticed that the `s.Receive()` function was hanging after the netlink response was recieved, so I added an additional clause to break from the loop and return the decoded message if the NLM_F_MULTI flag is not set. Signed-off-by: Dave Tucker <dave@dtucker.co.uk>
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+1, would like to see this too. |
vishvananda
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Apr 28, 2018
# This is the 1st commit message: Added tests for Gretap/Gretun devices fixed parsing IKey/OKey parameters for Gretun fixed parsing Local/Remote parameters for Gretap and Gretun removed irrelevant PMtuDisc parameter from IPv6 Gretaptest # This is the commit message vishvananda#2: Support num{tx,rx}queues and udp6zerocsum{tx,rx} Add IFLA_NUM_TX_QUEUES and IFLA_NUM_RX_QUEUES in link attribute and IFLA_VXLAN_UDP_ZERO_CSUM6_TX and IFLA_VXLAN_UDP_ZERO_CSUM6_RX in VXLAN attribute. # This is the commit message vishvananda#3: tuntap: Add multiqueue support Add multi queue support to tuntap without breaking legacy users of tuntap. Signed-off-by: Manohar Castelino <manohar.r.castelino@intel.com> # This is the commit message vishvananda#4: Fix go build issue for fou code Signed-off-by: Alessandro Boch <aboch@tetrationanalytics.com> # This is the commit message vishvananda#5: Retrieve VLAN and VNI when listing neighbour # This is the commit message vishvananda#6: Add requirements to conntrack tests Signed-off-by: Alessandro Boch <aboch@tetrationanalytics.com> # This is the commit message vishvananda#7: Fix LinkAdd for sit tunnel on 3.10 kernel Signed-off-by: Alessandro Boch <aboch@tetrationanalytics.com> # This is the commit message vishvananda#8: Run TestSocketGet in dedicated netns Signed-off-by: Alessandro Boch <aboch@tetrationanalytics.com> # This is the commit message vishvananda#9: Add support for managing source MACVLANs # This is the commit message vishvananda#10: Properly tear down netns at the end of test Signed-off-by: Alessandro Boch <aboch@tetrationanalytics.com> # This is the commit message vishvananda#11: Two new functions: LinkSetBondSlave and VethPeerIndex # This is the commit message vishvananda#12: Eliminate cgo from netlink. Signed-off-by: Christopher Koch <chrisko@google.com> # This is the commit message vishvananda#13: Don't overwrite the XDP file descriptor with flags # This is the commit message vishvananda#14: netlink: allow non linux builds to pass. # This is the commit message vishvananda#15: Update bpf_linux.go # This is the commit message vishvananda#16: Add Matchall filter # This is the commit message vishvananda#17: addr_linux: Skip BROADCAST and LABEL for non-ipv4 The attributes IFA_BROADCAST and IFA_LABEL are only valid for ipv4: they are not defined for ipv6 here: http://elixir.free-electrons.com/linux/v4.6/source/net/ipv6/addrconf.c#L4231 This ignores addr.Broadcast and addr.Label for non-ipv4 addresses. # This is the commit message vishvananda#18: addr_linux: Implement CacheInfo installation Currently, Validity and preference information values are ignored in addrHandle. This adds them to the netlink message when they are passed by the caller # This is the commit message vishvananda#19: Support IPv6 GRE Tun and Tap Signed-off-by: Alessandro Boch <aboch@tetrationanalytics.com> # This is the commit message vishvananda#20: Add a 'ListExisting' option to get the existing entries in the route/addr/link tables as part of RouteSubscribeWithOptions, AddrSubscribeWithOptions, and LinkSubscribeWithOptions. # This is the commit message vishvananda#21: Run gofmt -s -w on the project # This is the commit message vishvananda#22: Add Fq Qdisc support # This is the commit message vishvananda#23: Add FQ Codel # This is the commit message vishvananda#24: Clarify ESN bitmap length construction logic Signed-off-by: Alessandro Boch <aboch@tetrationanalytics.com> # This is the commit message vishvananda#25: Use IFF_MULTI_QUEUE from x/sys/unix to define TUNTAP_MULTI_QUEUE Use the constant defined in the golang.org/x/sys/unix package instead of locally open-coding it. Signed-off-by: Tobias Klauser <tklauser@distanz.ch> # This is the commit message vishvananda#26: Use IFLA_* constants from x/sys/unix The IFLA_* constants in in x/sys/unix were updated to Linux 4.15 in golang/sys@88d2dcc, so use these instead of locally duplicating them. Signed-off-by: Tobias Klauser <tklauser@distanz.ch> # This is the commit message vishvananda#27: Add changelog file, initial release tagging Signed-off-by: Alessandro Boch <aboch@tetrationanalytics.com> # This is the commit message vishvananda#28: Read conntrack flow statistics This PR allows populating per-connection packet and byte counts to ConntrackFlow object when nf_conntrack_acct is enabled. # This is the commit message vishvananda#29: Add support for setting InfininBand Node and Port GUID of a VF Add support for setting InfiniBand Node and Port GUID address configuration of a VF when InfiniBand HCA are used with SR-IOV mode. Signed-off-by: Parav Pandit <parav@mellanox.com>
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This provides the basic functionality of the iproute2
route getcommand. It allows you to query netlink for the route to a destination
IP.Net
While implementing I noticed that the
s.Receive()function was hangingafter the netlink response was recieved, so I added an additional clause
to break from the loop and return the decoded message if the NLM_F_MULTI
flag is not set.
Signed-off-by: Dave Tucker dave@dtucker.co.uk