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* 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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* mem-pool: Fix potential memory leak and lost leases when reassigning leasesTobias Brunner2014-11-111-2/+6
| | | | | | | | | | | | | | | | If no offline leases are available for the current client and assigning online leases is disabled, and if all IPs of the pool have already been assigned to clients we look for offline leases that previously were assigned to other clients. In case the current client has online leases the previous code would replace the existing mapping entry and besides resulting in a memory leak the online leases would be lost forever (even if the client later releases the addresses). If this happens repeatedly the number of available addresses would decrease even though the total number of online and offline leases seen in `ipsec leases` would indicate that there are free addresses available. Fixes #764.
* mem-pool: Add basic unit testsTobias Brunner2014-10-303-0/+233
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* libhydra: Add test runnerTobias Brunner2014-10-305-0/+91
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* mem-pool: Correctly ignore first and last addresses of subnets and adjust sizeTobias Brunner2014-10-301-7/+49
| | | | | | | Previously one more than the first and last address was ignored. And if the base address is not the network ID of the subnet we should not skip it. But we should adjust the size as it does not represent the actual number of IP addresses assignable.
* kernel-pfroute: Check for RTM_IFANNOUNCE availabilityMartin Willi2014-10-141-0/+10
| | | | This message is not available on OS X.
* 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.
* settings: Use strongswan.conf used during library initialization for reloadMartin Willi2014-09-221-2/+1
| | | | | | | | Since 4b670a20 we require an explicit strongswan.conf to re-load configurations. However, the define was missing in the build, breaking SIGHUP based config reloading. Fixes #651.
* 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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* kernel-netlink: Add global option to set MTU on installed routesTobias Brunner2014-09-121-0/+19
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* kernel-pfroute: Delete interfaces on RTM_IFANNOUNCE/IFAN_DEPARTURE eventsTobias Brunner2014-09-091-0/+38
| | | | | | | | | | | | We actually never deleted cached interfaces. So if the kernel reuses interface indices events for newly created interfaces could have been associated with interface objects of deactivated and deleted interfaces. Since we also didn't update the interface name when such an interface got reactivated we ended up using the old name e.g. to install routes. A trigger for this was the deletion and recreation of TUN devices during reauthentication of SAs that use virtual IPs.
* kernel-pfkey: Report packet counts of IPsec SAsTobias Brunner2014-09-091-2/+2
| | | | | | Seems that packet counts can be retrieved after all. At least the Linux and FreeBSD kernels treat the number of allocations as number of packets. We actually installed packet limits in that field already.
* kernel-pfroute: Fix kernel response handlingTobias Brunner2014-08-191-2/+3
| | | | | | | | | | | | | The condvar is signaled for every handled message received from the kernel not only for replies (this changed with 2a2d7a4dc8). This may cause segfaults because this->reply is not set when the waiting thread is woken due to an IP address change. Since this->reply is only set when it is actually the expected reply (and only one request is sent at a time, thanks to c9a323c1d9) we only have to make sure the reply is there (and clear it once we handled it). Using separate condvars could also be an option in the future.
* kernel-netlink: Rename algorithm identifier from cast128 to cast5Martin Willi2014-07-041-1/+1
| | | | | | | | | | | Even if the XFRM identifier was named cast128 in the kernel before 2.6.31, it actually never worked, because there is no such crypto algorithm. The identifier has been changed to cast5 in https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=245acb87 to make it work, so we should use that. Fixes #633.
* kernel-pfkey: Use address in TS to determine interface for shunt routesTobias Brunner2014-06-261-6/+9
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* kernel-pfkey: Use subnet and prefix when determining nexthop for shunt ↵Tobias Brunner2014-06-261-2/+12
| | | | | | policy routes This is basically the same as 88f125f5605e54b38cf8913df79e32ec6bddff10.
* kernel-pfkey: Install routes for shunt policiesTobias Brunner2014-06-261-4/+4
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* kernel-netlink: Cast IPv6 address blobs to the proper typeTobias Brunner2014-06-241-3/+3
| | | | On Android these macros are defined as functions.
* kernel-netlink: Install virtual IPv6 addresses as deprecatedTobias Brunner2014-06-201-0/+11
| | | | | | | | This should prevent the kernel's IPv6 source address selection algorithm from using this address unless it is forced to by our source route. This is helpful if split tunneling is used. Fixes #598.
* kernel-netlink: Pass prefix when looking up next hop for shunt policiesTobias Brunner2014-06-191-1/+12
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* kernel-netlink: Add support for destination prefix when determining next hopTobias Brunner2014-06-191-20/+35
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* kernel-interface: Add destination prefix to get_nexthop()Tobias Brunner2014-06-197-9/+14
| | | | | This allows to determine the next hop to reach a subnet, for instance, when installing routes for shunt policies.
* kernel-pfkey: Add support for new policy priority classTobias Brunner2014-06-191-2/+5
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* kernel-netlink: Add support for new policy priority classTobias Brunner2014-06-191-2/+5
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* Remove kernel-klips pluginTobias Brunner2014-06-197-3164/+0
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* kernel-netlink: Follow RFC 6724 when selecting IPv6 source addressesTobias Brunner2014-06-191-26/+170
| | | | | | | | Instead of using the first address we find on an interface we should consider properties like an address' scope or whether it is temporary or public. Fixes #543.
* kernel-netlink: Never use XFRMA_REPLAY_ESN_VAL to configure zero replay windowsMartin Willi2014-06-181-1/+1
| | | | | | Trying to disable replay windows using the ESN attribute fails with EINVAL. Use non-ESN legacy format to disable replay windows, even if ESN has been negotiated over IKE.
* kernel-pfkey: Support connection specific replay window sizes up to 32 packetsMartin Willi2014-06-171-1/+1
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* kernel-netlink: Support connection specific replay window sizesMartin Willi2014-06-171-39/+16
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* kernel-interface: Add a replay_window parameter to add_sa()Martin Willi2014-06-176-13/+22
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