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| author | Roman Smrž <roman.smrz@seznam.cz> | 2023-04-01 16:35:17 +0200 |
|---|---|---|
| committer | Roman Smrž <roman.smrz@seznam.cz> | 2023-04-01 16:35:17 +0200 |
| commit | e01cae88b81fa6f9f35b32ff2e3ca57c34dd7f58 (patch) | |
| tree | 6a95de9081ccabcc3cae2c2a70423cb6472be468 /src | |
| parent | 4b308cb9edb5a564ef33d6c6739305085dfa9ebb (diff) | |
Shorten veth names in parent network using only index
Diffstat (limited to 'src')
| -rw-r--r-- | src/Network.hs | 25 |
1 files changed, 13 insertions, 12 deletions
diff --git a/src/Network.hs b/src/Network.hs index d3262df..4cc74cb 100644 --- a/src/Network.hs +++ b/src/Network.hs @@ -36,9 +36,9 @@ NETWORK STRUCTURE Local network (namespace "s<PREFIX>", e.g. "s1_2"): (upstream, if any) (to subnets, if any and prefix length < 24) - ↑ veth_sX_1 (IP: prefix.1(.0)*.254) - veth0 veth_sX_2 (IP: prefix.2(.0)*.254) → veth0 in subnet namespace - | veth_sX_3 (IP: prefix.3(.0)*.254) + ↑ veth_s1 (IP: prefix.1(.0)*.254) + veth0 veth_s2 (IP: prefix.2(.0)*.254) → veth0 in subnet namespace + | veth_s3 (IP: prefix.3(.0)*.254) br0 (IP: prefix(.0)*.1/24) ... / | \ veth2 ... veth253 @@ -133,13 +133,13 @@ delInternet _ = liftIO $ do newSubnet :: MonadIO m => Network -> Maybe VarName -> m Network newSubnet net vname = do - sub <- liftIO $ atomically $ do - pref <- nextPrefix (netPrefix net) . map fst <$> readTVar (netSubnets net) + (sub, idx) <- liftIO $ atomically $ do + idx <- nextPrefix (netPrefix net) . map fst <$> readTVar (netSubnets net) sub <- newNetwork - (ipSubnet pref (netPrefix net)) + (ipSubnet idx (netPrefix net)) (netDir net </> maybe (T.unpack $ netnsName net) (("sub_"++) . unpackVarName) vname) - modifyTVar (netSubnets net) ((pref, sub) :) - return sub + modifyTVar (netSubnets net) ((idx, sub) :) + return (sub, idx) initNetwork sub let lan = lanSubnet $ netPrefix sub @@ -148,15 +148,16 @@ newSubnet net vname = do router = lanIp 254 liftIO $ do - callOn net $ "ip link add \"veth_" <> netnsName sub <> "\" type veth peer name veth0 netns \"" <> netnsName sub <> "\"" - callOn net $ "ip addr add dev \"veth_" <> netnsName sub <> "\" " <> textIpAddressCidr router - callOn net $ "ip link set dev \"veth_" <> netnsName sub <> "\" up" + let veth = T.pack $ "veth_s" <> show idx + callOn net $ "ip link add " <> veth <> " type veth peer name veth0 netns \"" <> netnsName sub <> "\"" + callOn net $ "ip addr add dev " <> veth <> " " <> textIpAddressCidr router + callOn net $ "ip link set dev " <> veth <> " up" -- If the new subnet can be split further, routing rule for the whole prefix is needed when (allowsSubnets (netPrefix sub)) $ callOn net $ "ip route add " <> textIpNetwork (netPrefix sub) <> " via " <> textIpAddress bridge - <> " dev \"veth_" <> netnsName sub <> "\"" + <> " dev " <> veth <> " src " <> textIpAddress router callOn sub $ "ip link set dev veth0 master br0 up" |