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* libhydra: Move all kernel plugins to libcharonTobias Brunner2016-03-0313-7043/+0
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* kernel-netlink: Allow Netlink send buffer size to be configured via compile ↵Tobias Brunner2016-02-121-3/+11
| | | | | | | option The receive buffer size can already be changed via strongswan.conf if necessary.
* kernel-netlink: Allow IPsec policies to replace shunt policiesTobias Brunner2015-11-101-3/+3
| | | | | Shunt policies don't have a reqid set, so we allow unequal reqids in this particular case (i.e. if one of the reqids is 0).
* kernel-netlink: Make absolutely sure we always delete the right policy cache ↵Tobias Brunner2015-11-101-2/+9
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* kernel-interface: Pass the same data to del_policy() that was passed to ↵Tobias Brunner2015-11-101-3/+4
| | | | | | | add_policy() The additional data can be helpful to identify the exact policy to delete.
* kernel-netlink: Remove the unused policy_history flagTobias Brunner2015-11-101-41/+20
| | | | This was used with pluto, which had its own policy tracking.
* kernel-netlink: Properly set port mask for ICMP type/code if only set on one ↵Tobias Brunner2015-08-311-7/+8
| | | | | | | | | | | | side If only one traffic selector had a port (type/code) the other side had the port mask set to 0, which canceled out the applied type/code. It also fixes the installation of ICMP type/code on big-endian hosts. Fixes #1091. References #595.
* kernel-netlink: Only flush SAs of types we actually manageTobias Brunner2015-08-211-6/+19
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* kernel-netlink: Avoid route dump if routing rule excludes traffic with a ↵Tobias Brunner2015-08-181-7/+33
| | | | | | | | | | | certain mark If the routing rule we use to direct traffic to our own routing table excludes traffic with a certain mark (fwmark = !<mark>) we can simplify the route lookup and avoid dumping all routes by passing the mark to the request. That way our own routes are ignored and we get the preferred route back without having to dump and analyze all routes, which is quite a burden on hosts with lots of routes.
* kernel-netlink: When adding a policy do an update if it already existsTobias Brunner2015-08-131-1/+9
| | | | | | | | | | This may be the case when SAs are reestablished after a crash of the IKE daemon. We could actually always do updates. The kernel doesn't care, the only difference is the possible EEXIST if XFRM_MSG_NEWPOLICY is used. The advantage of not doing this, though, is that we get a warning in the log if a policy already exists, as that should usually not be the case.
* kernel-netlink: Use PAGE_SIZE as default size for the netlink receive bufferTobias Brunner2015-08-041-1/+11
| | | | | | | | The kernel uses NLMSG_GOODSIZE as default buffer size, which defaults to the PAGE_SIZE if it is lower than 8192 or to that value otherwise. In some cases (e.g. for dump messages) the kernel might use up to 16k for messages, which might require increasing this value.
* kernel-netlink: Actually verify if the netlink message exceeds the buffer sizeTobias Brunner2015-08-041-2/+2
| | | | | | It might equal it and that's fine. With MSG_TRUNC we get the actual message size and can only report an error if we haven't received the complete message.
* kernel-netlink: Unlock mutex in del_policy() if mark can't be added to messageTobias Brunner2015-07-311-0/+1
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* kernel-netlink: Add ChaCha20-Poly1305 AEAD supportMartin Willi2015-06-291-0/+2
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* kernel-netlink: Ignore unusable routesTobias Brunner2015-05-211-0/+24
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* kernel-netlink: Make buffer size for received Netlink messages configurableTobias Brunner2015-05-211-7/+11
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* kernel-netlink: Don't mangle verbosity during test initializationMartin Willi2015-04-151-2/+0
| | | | | We now properly manage thread verbosity in the test framework, and don't need to silence thread spawning messages.
* kernel-netlink: Fix GCC error about uninitialized variable useMartin Willi2015-04-081-1/+1
| | | | | get_replay_state() always returns a replay_state_len when returning a replay state, but GCC doesn't know about that.
* kernel-netlink: Copy current usage stats to new SA in update_sa()Tobias Brunner2015-03-251-6/+34
| | | | | | | | | | | | This is needed to fix usage stats sent via RADIUS Accounting if clients use MOBIKE or e.g. the kernel notifies us about a changed NAT mapping. The upper layers won't expect the stats to get reset if only the IPs have changed (and some kernel interface might actually allow such updates without reset). It also fixes traffic based lifetimes in such situations. Fixes #799.
* kernel-interface: Add a separate "update" flag to add_sa()Martin Willi2015-03-091-3/+3
| | | | | | | | | | | The current "inbound" flag is used for two purposes: To define the actual direction of the SA, but also to determine the operation used for SA installation. If an SPI has been allocated, an update operation is required instead of an add. While the inbound flag normally defines the kind of operation required, this is not necessarily true in all cases. On the HA passive node, we install inbound SAs without prior SPI allocation.
* kernel-netlink: Respect kernel routing priorities for IKE routesMartin Willi2015-03-031-2/+15
| | | | | | | | If a system uses routing metrics, we should honor them when doing (manual) routing lookups for IKE. When enumerating routes, the kernel reports priorities with the RTA_PRIORITY attribute, not RTA_METRICS. We prefer routes with a lower priority value, and fall back to longest prefix match priorities if the priority value is equal.
* kernel-interface: Raise mapping event with a proto/SPI/dst tupleMartin Willi2015-02-201-8/+14
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* kernel-interface: Raise expires with a proto/SPI/dst tuple instead of reqidMartin Willi2015-02-201-9/+10
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* kernel-interface: Pass full list of traffic selectors to add_sa()Martin Willi2015-02-201-3/+5
| | | | | | While we can handle the first selector only in BEET mode in kernel-netlink, passing the full list gives the backend more flexibility how to handle this information.
* kernel-interface: Remove reqid parameter from get_spi/get_cpi() methodsMartin Willi2015-02-201-14/+9
| | | | | | | | | | The reqid is not strictly required, as we set the reqid with the update call when installing the negotiated SA. If we don't need a reqid at this stage, we can later allocate the reqid in the kernel backend once the SA parameters have been fully negotaited. This allows us to assign the same reqid for the same selectors to avoid conflicts on backends this is necessary.
* Fixed some typos, courtesy of codespellTobias Brunner2014-12-151-1/+1
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* kernel-netlink: Optionally ignore errors resulting from response message lossMartin Willi2014-11-211-0/+82
| | | | | | | | | | | | | | | As some backends over unreliable transport do not cache response messages, retransmissions due the loss of responses perform the operation again. Add an option to ignore some errors arising from such duplicate operations. Note: This approach can't distinguish between real EXIST/NOTFOUND errors and packet failures, and therefore is a source of race conditions and can't detect any of these errors actually happening. Therefore that behavior is disabled by default, and can be enabled with the ignore_retransmit_errors strongswan.conf option. To properly distinguish between real and retransmission errors, a Netlink backend should implement retransmission detection using sequence numbers.
* kernel-netlink: Add an option to enforce using XFRM_MSG_UPDPOLICYMartin Willi2014-11-211-0/+12
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* kernel-netlink: Fallback to UDP if detecting socket protocol failsMartin Willi2014-11-211-2/+4
| | | | | getsockopt(SO_PROTOCOL) is not supported before 2.6.32. Default to UDP if either the SO_PROTOCOL define is missing or the syscall fails.
* kernel-netlink: Alternatively support global port based IKE bypass policiesMartin Willi2014-11-211-3/+160
| | | | | | The socket based IKE bypass policies are usually superior, but not supported on all networking stacks. The port based variant uses global policies for the UDP ports we have IKE sockets for.
* kernel-netlink: Add options to enable parallel Netlink queries explicitlyMartin Willi2014-11-215-20/+39
| | | | | | As under vanilla Linux the kernel can't handle parallel dump queries and returns EBUSY, it makes not much sense to use them. Disable parallel queries by default to basically restore original behavior, improving performance.
* kernel-netlink: Release lock while doing Netlink NEW/DELADDR operationsMartin Willi2014-11-211-8/+17
| | | | | | | | Besides that it can improve throughput, it avoids a deadlock situation. If all threads are busy, watcher will invoke the FD notification for NEWADDR events itself. If the lock is held, it gets locked up. As watcher is not dispatching anymore, it can't signal Netlink socket send() completion, and the send() operation does not return and keeps the lock.
* kernel-netlink: Add non-dumping variants of echo and stress testsMartin Willi2014-11-211-0/+84
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* kernel-netlink: Add test cases for successful and timing out retransmissionsMartin Willi2014-11-212-0/+90
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* kernel-netlink: Add a compile-time hook to simulate request message lossMartin Willi2014-11-211-0/+15
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* kernel-netlink: Implement configurable Netlink request retransmissionMartin Willi2014-11-211-15/+86
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* kernel-netlink: Add a stress test with several threads doing Netlink exchangesMartin Willi2014-11-211-0/+62
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* kernel-netlink: Retry netlink query while kernel returns EBUSYMartin Willi2014-11-211-3/+37
| | | | | | If the kernel can't execute a Netlink query because a different query is already active, it returns EBUSY. As this can happen now as we support parallel queries, retry on this error condition.
* kernel-netlink: Support parallel Netlink queriesMartin Willi2014-11-211-74/+192
| | | | | | | | | | | | | | | | | | Instead of locking the socket exclusively to wait for replies, use watcher to wait for and read in responses asynchronously. This allows multiple parallel Netlink queries, which can significantly improve performance if the kernel Netlink layer has longer latencies and supports parallel queries. For vanilla Linux, parallel queries don't make much sense, as it usually returns EBUSY for the relevant dump requests. This requires a retry, and in the end makes queries more expensive under high load. Instead of checking the Netlink message sequence number to detect multi-part messages, this code now relies on the NLM_F_MULTI flag to detect them. This has previously been avoided (by 1d51abb7). It is unclear if the flag did not work correctly on very old Linux kernels, or if the flag was not used appropriately by strongSwan. The flag seems to work just fine back to 2.6.18, which is a kernel still in use by RedHat/CentOS 5.
* kernel-netlink: Add a simple send message test querying available linksMartin Willi2014-11-213-0/+70
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* kernel-netlink: Add a stub for a test-runnerMartin Willi2014-11-214-0/+85
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* kernel-netlink: Define and use rtnetlink message typesMartin Willi2014-09-241-1/+22
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* kernel-netlink: Pass protocol specific enum names to socket constructorMartin Willi2014-09-244-12/+13
| | | | | This avoid the hard dependency on enum names, and makes kernel_netlink_shared independent of kernel_netlink_ipsec.
* kernel-netlink: Clean up socket initialization, handle 0 as valid socket fdMartin Willi2014-09-241-9/+6
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* kernel-netlink: Clean up response buffer managementMartin Willi2014-09-241-24/+16
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* kernel-netlink: Use recv() instead of recvfrom()Martin Willi2014-09-241-11/+3
| | | | | As we are not interested in the returned address, there is really no need in passing that argument.
* kernel-netlink: Avoid casting the NLMSG_DATA() return valueMartin Willi2014-09-243-26/+26
| | | | There is really no need for doing so, and it makes the code just unreadable.
* kernel-netlink: Define netlink buffer as an union having a netlink headerMartin Willi2014-09-243-20/+23
| | | | | This allows us to streamline the netlink buffers, and avoid extensive casting.
* kernel-netlink: Optionally install protocol and ports on transport mode SAsTobias Brunner2014-09-121-6/+18
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* kernel-netlink: Add global option to configure MSS-clamping on installed routesTobias Brunner2014-09-121-6/+26
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