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* Merge git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nfDavid S. Miller2016-03-282-11/+14
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pablo Neira Ayuso says: ==================== Netfilter fixes for net The following patchset contains Netfilter fixes for you net tree, they are: 1) There was a race condition between parallel save/swap and delete, which resulted a kernel crash due to the increase ref for save, swap, wrong ref decrease operations. Reported and fixed by Vishwanath Pai. 2) OVS should call into CT NAT for packets of new expected connections only when the conntrack state is persisted with the 'commit' option to the OVS CT action. From Jarno Rajahalme. 3) Resolve kconfig dependencies with new OVS NAT support. From Arnd Bergmann. 4) Early validation of entry->target_offset to make sure it doesn't take us out from the blob, from Florian Westphal. 5) Again early validation of entry->next_offset to make sure it doesn't take out from the blob, also from Florian. 6) Check that entry->target_offset is always of of sizeof(struct xt_entry) for unconditional entries, when checking both from check_underflow() and when checking for loops in mark_source_chains(), again from Florian. 7) Fix inconsistent behaviour in nfnetlink_queue when NFQA_CFG_F_FAIL_OPEN is set and netlink_unicast() fails due to buffer overrun, we have to reinject the packet as the user expects. 8) Enforce nul-terminated table names from getsockopt GET_ENTRIES requests. 9) Don't assume skb->sk is set from nft_bridge_reject and synproxy, this fixes a recent update of the code to namespaceify ip_default_ttl, patch from Liping Zhang. This batch comes with four patches to validate x_tables blobs coming from userspace. CONFIG_USERNS exposes the x_tables interface to unpriviledged users and to be honest this interface never received the attention for this move away from the CAP_NET_ADMIN domain. Florian is working on another round with more patches with more sanity checks, so expect a bit more Netfilter fixes in this development cycle than usual. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
| * openvswitch: call only into reachable nf-nat codeArnd Bergmann2016-03-282-9/+11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The openvswitch code has gained support for calling into the nf-nat-ipv4/ipv6 modules, however those can be loadable modules in a configuration in which openvswitch is built-in, leading to link errors: net/built-in.o: In function `__ovs_ct_lookup': :(.text+0x2cc2c8): undefined reference to `nf_nat_icmp_reply_translation' :(.text+0x2cc66c): undefined reference to `nf_nat_icmpv6_reply_translation' The dependency on (!NF_NAT || NF_NAT) prevents similar issues, but NF_NAT is set to 'y' if any of the symbols selecting it are built-in, but the link error happens when any of them are modular. A second issue is that even if CONFIG_NF_NAT_IPV6 is built-in, CONFIG_NF_NAT_IPV4 might be completely disabled. This is unlikely to be useful in practice, but the driver currently only handles IPv6 being optional. This patch improves the Kconfig dependency so that openvswitch cannot be built-in if either of the two other symbols are set to 'm', and it replaces the incorrect #ifdef in ovs_ct_nat_execute() with two "if (IS_ENABLED())" checks that should catch all corner cases also make the code more readable. The same #ifdef exists ovs_ct_nat_to_attr(), where it does not cause a link error, but for consistency I'm changing it the same way. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Fixes: 05752523e565 ("openvswitch: Interface with NAT.") Acked-by: Joe Stringer <joe@ovn.org> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
| * openvswitch: Fix checking for new expected connections.Jarno Rajahalme2016-03-281-2/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | OVS should call into CT NAT for packets of new expected connections only when the conntrack state is persisted with the 'commit' option to the OVS CT action. The test for this condition is doubly wrong, as the CT status field is ANDed with the bit number (IPS_EXPECTED_BIT) rather than the mask (IPS_EXPECTED), and due to the wrong assumption that the expected bit would apply only for the first (i.e., 'new') packet of a connection, while in fact the expected bit remains on for the lifetime of an expected connection. The 'ctinfo' value IP_CT_RELATED derived from the ct status can be used instead, as it is only ever applicable to the 'new' packets of the expected connection. Fixes: 05752523e565 ('openvswitch: Interface with NAT.') Reported-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Jarno Rajahalme <jarno@ovn.org> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* | openvswitch: Use proper buffer size in nla_memcpyHaishuang Yan2016-03-281-1/+2
|/ | | | | | | | | | For the input parameter count, it's better to use the size of destination buffer size, as nla_memcpy would take into account the length of the source netlink attribute when a data is copied from an attribute. Signed-off-by: Haishuang Yan <yanhaishuang@cmss.chinamobile.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-nextLinus Torvalds2016-03-1911-91/+726
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull networking updates from David Miller: "Highlights: 1) Support more Realtek wireless chips, from Jes Sorenson. 2) New BPF types for per-cpu hash and arrap maps, from Alexei Starovoitov. 3) Make several TCP sysctls per-namespace, from Nikolay Borisov. 4) Allow the use of SO_REUSEPORT in order to do per-thread processing of incoming TCP/UDP connections. The muxing can be done using a BPF program which hashes the incoming packet. From Craig Gallek. 5) Add a multiplexer for TCP streams, to provide a messaged based interface. BPF programs can be used to determine the message boundaries. From Tom Herbert. 6) Add 802.1AE MACSEC support, from Sabrina Dubroca. 7) Avoid factorial complexity when taking down an inetdev interface with lots of configured addresses. We were doing things like traversing the entire address less for each address removed, and flushing the entire netfilter conntrack table for every address as well. 8) Add and use SKB bulk free infrastructure, from Jesper Brouer. 9) Allow offloading u32 classifiers to hardware, and implement for ixgbe, from John Fastabend. 10) Allow configuring IRQ coalescing parameters on a per-queue basis, from Kan Liang. 11) Extend ethtool so that larger link mode masks can be supported. From David Decotigny. 12) Introduce devlink, which can be used to configure port link types (ethernet vs Infiniband, etc.), port splitting, and switch device level attributes as a whole. From Jiri Pirko. 13) Hardware offload support for flower classifiers, from Amir Vadai. 14) Add "Local Checksum Offload". Basically, for a tunneled packet the checksum of the outer header is 'constant' (because with the checksum field filled into the inner protocol header, the payload of the outer frame checksums to 'zero'), and we can take advantage of that in various ways. From Edward Cree" * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1548 commits) bonding: fix bond_get_stats() net: bcmgenet: fix dma api length mismatch net/mlx4_core: Fix backward compatibility on VFs phy: mdio-thunder: Fix some Kconfig typos lan78xx: add ndo_get_stats64 lan78xx: handle statistics counter rollover RDS: TCP: Remove unused constant RDS: TCP: Add sysctl tunables for sndbuf/rcvbuf on rds-tcp socket net: smc911x: convert pxa dma to dmaengine team: remove duplicate set of flag IFF_MULTICAST bonding: remove duplicate set of flag IFF_MULTICAST net: fix a comment typo ethernet: micrel: fix some error codes ip_tunnels, bpf: define IP_TUNNEL_OPTS_MAX and use it bpf, dst: add and use dst_tclassid helper bpf: make skb->tc_classid also readable net: mvneta: bm: clarify dependencies cls_bpf: reset class and reuse major in da ldmvsw: Checkpatch sunvnet.c and sunvnet_common.c ldmvsw: Add ldmvsw.c driver code ...
| * ip_tunnels, bpf: define IP_TUNNEL_OPTS_MAX and use itDaniel Borkmann2016-03-181-1/+1
| | | | | | | | | | | | | | | | | | | | eBPF defines this as BPF_TUNLEN_MAX and OVS just uses the hard-coded value inside struct sw_flow_key. Thus, add and use IP_TUNNEL_OPTS_MAX for this, which makes the code a bit more generic and allows to remove BPF_TUNLEN_MAX from eBPF code. Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Signed-off-by: David S. Miller <davem@davemloft.net>
| * openvswitch: allow output of MPLS packets on tunnel vportsSimon Horman2016-03-181-3/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Currently output of MPLS packets on tunnel vports is not allowed by Open vSwitch. This is because historically encapsulation was done in such a way that the inner_protocol field of the skb needed to hold the inner protocol for both MPLS and tunnel encapsulation in order for GSO segmentation to be performed correctly. Since b2acd1dc3949 ("openvswitch: Use regular GRE net_device instead of vport") Open vSwitch makes use of lwt to output to tunnel netdevs which perform encapsulation. As no drivers expose support for MPLS offloads this means that GSO packets are segmented in software by validate_xmit_skb(), which is called from __dev_queue_xmit(), before tunnel encapsulation occurs. This means that the inner protocol of MPLS is no longer needed by the time encapsulation occurs and the contention on the inner_protocol field of the skb no longer occurs. Thus it is now safe to output MPLS to tunnel vports. Signed-off-by: Simon Horman <simon.horman@netronome.com> Reviewed-by: Jesse Gross <jesse@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
| * ovs: internal_set_rx_headroom() can be staticWu Fengguang2016-03-181-1/+1
| | | | | | | | | | Signed-off-by: Fengguang Wu <fengguang.wu@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * Merge git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf-nextDavid S. Miller2016-03-143-40/+626
| |\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pablo Neira Ayuso says: ==================== Netfilter/IPVS/OVS updates for net-next The following patchset contains Netfilter/IPVS fixes and OVS NAT support, more specifically this batch is composed of: 1) Fix a crash in ipset when performing a parallel flush/dump with set:list type, from Jozsef Kadlecsik. 2) Make sure NFACCT_FILTER_* netlink attributes are in place before accessing them, from Phil Turnbull. 3) Check return error code from ip_vs_fill_iph_skb_off() in IPVS SIP helper, from Arnd Bergmann. 4) Add workaround to IPVS to reschedule existing connections to new destination server by dropping the packet and wait for retransmission of TCP syn packet, from Julian Anastasov. 5) Allow connection rescheduling in IPVS when in CLOSE state, also from Julian. 6) Fix wrong offset of SIP Call-ID in IPVS helper, from Marco Angaroni. 7) Validate IPSET_ATTR_ETHER netlink attribute length, from Jozsef. 8) Check match/targetinfo netlink attribute size in nft_compat, patch from Florian Westphal. 9) Check for integer overflow on 32-bit systems in x_tables, from Florian Westphal. Several patches from Jarno Rajahalme to prepare the introduction of NAT support to OVS based on the Netfilter infrastructure: 10) Schedule IP_CT_NEW_REPLY definition for removal in nf_conntrack_common.h. 11) Simplify checksumming recalculation in nf_nat. 12) Add comments to the openvswitch conntrack code, from Jarno. 13) Update the CT state key only after successful nf_conntrack_in() invocation. 14) Find existing conntrack entry after upcall. 15) Handle NF_REPEAT case due to templates in nf_conntrack_in(). 16) Call the conntrack helper functions once the conntrack has been confirmed. 17) And finally, add the NAT interface to OVS. The batch closes with: 18) Cleanup to use spin_unlock_wait() instead of spin_lock()/spin_unlock(), from Nicholas Mc Guire. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
| | * openvswitch: Interface with NAT.Jarno Rajahalme2016-03-143-28/+502
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Extend OVS conntrack interface to cover NAT. New nested OVS_CT_ATTR_NAT attribute may be used to include NAT with a CT action. A bare OVS_CT_ATTR_NAT only mangles existing and expected connections. If OVS_NAT_ATTR_SRC or OVS_NAT_ATTR_DST is included within the nested attributes, new (non-committed/non-confirmed) connections are mangled according to the rest of the nested attributes. The corresponding OVS userspace patch series includes test cases (in tests/system-traffic.at) that also serve as example uses. This work extends on a branch by Thomas Graf at https://github.com/tgraf/ovs/tree/nat. Signed-off-by: Jarno Rajahalme <jarno@ovn.org> Acked-by: Thomas Graf <tgraf@suug.ch> Acked-by: Joe Stringer <joe@ovn.org> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
| | * openvswitch: Delay conntrack helper call for new connections.Jarno Rajahalme2016-03-141-5/+16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | There is no need to help connections that are not confirmed, so we can delay helping new connections to the time when they are confirmed. This change is needed for NAT support, and having this as a separate patch will make the following NAT patch a bit easier to review. Signed-off-by: Jarno Rajahalme <jarno@ovn.org> Acked-by: Joe Stringer <joe@ovn.org> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
| | * openvswitch: Handle NF_REPEAT in conntrack action.Jarno Rajahalme2016-03-141-2/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | Repeat the nf_conntrack_in() call when it returns NF_REPEAT. This avoids dropping a SYN packet re-opening an existing TCP connection. Signed-off-by: Jarno Rajahalme <jarno@ovn.org> Acked-by: Joe Stringer <joe@ovn.org> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
| | * openvswitch: Find existing conntrack entry after upcall.Jarno Rajahalme2016-03-141-13/+90
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add a new function ovs_ct_find_existing() to find an existing conntrack entry for which this packet was already applied to. This is only to be called when there is evidence that the packet was already tracked and committed, but we lost the ct reference due to an userspace upcall. ovs_ct_find_existing() is called from skb_nfct_cached(), which can now hide the fact that the ct reference may have been lost due to an upcall. This allows ovs_ct_commit() to be simplified. This patch is needed by later "openvswitch: Interface with NAT" patch, as we need to be able to pass the packet through NAT using the original ct reference also after the reference is lost after an upcall. Signed-off-by: Jarno Rajahalme <jarno@ovn.org> Acked-by: Joe Stringer <joe@ovn.org> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
| | * openvswitch: Update the CT state key only after nf_conntrack_in().Jarno Rajahalme2016-03-141-3/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Only a successful nf_conntrack_in() call can effect a connection state change, so it suffices to update the key only after the nf_conntrack_in() returns. This change is needed for the later NAT patches. Signed-off-by: Jarno Rajahalme <jarno@ovn.org> Acked-by: Joe Stringer <joe@ovn.org> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
| | * openvswitch: Add commentary to conntrack.cJarno Rajahalme2016-03-141-1/+20
| | | | | | | | | | | | | | | | | | | | | | | | | | | This makes the code easier to understand and the following patches more focused. Signed-off-by: Jarno Rajahalme <jarno@ovn.org> Acked-by: Joe Stringer <joe@ovn.org> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
| | * netfilter: Remove IP_CT_NEW_REPLY definition.Jarno Rajahalme2016-03-141-2/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | Remove the definition of IP_CT_NEW_REPLY from the kernel as it does not make sense. This allows the definition of IP_CT_NUMBER to be simplified as well. Signed-off-by: Jarno Rajahalme <jarno@ovn.org> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
| * | ovs: allow nl 'flow set' to use ufid without flow keySamuel Gauthier2016-03-131-11/+17
| |/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When we want to change a flow using netlink, we have to identify it to be able to perform a lookup. Both the flow key and unique flow ID (ufid) are valid identifiers, but we always have to specify the flow key in the netlink message. When both attributes are there, the ufid is used. The flow key is used to validate the actions provided by the userland. This commit allows to use the ufid without having to provide the flow key, as it is already done in the netlink 'flow get' and 'flow del' path. The flow key remains mandatory when an action is provided. Signed-off-by: Samuel Gauthier <samuel.gauthier@6wind.com> Reviewed-by: Simon Horman <simon.horman@netronome.com> Acked-by: Pravin B Shelar <pshelar@ovn.org> Signed-off-by: David S. Miller <davem@davemloft.net>
| * ovs: propagate per dp max headroom to all vportsPaolo Abeni2016-03-013-1/+53
| | | | | | | | | | | | | | | | | | | | | | | | This patch implements bookkeeping support to compute the maximum headroom for all the devices in each datapath. When said value changes, the underlying devs are notified via the ndo_set_rx_headroom method. This also increases the internal vports xmit performance. Signed-off-by: Paolo Abeni <pabeni@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netDavid S. Miller2016-02-231-1/+3
| |\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Conflicts: drivers/net/phy/bcm7xxx.c drivers/net/phy/marvell.c drivers/net/vxlan.c All three conflicts were cases of simple overlapping changes. Signed-off-by: David S. Miller <davem@davemloft.net>
| * | net: use skb_postpush_rcsum instead of own implementationsDaniel Borkmann2016-02-193-13/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Replace individual implementations with the recently introduced skb_postpush_rcsum() helper. Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Tom Herbert <tom@herbertland.com> Acked-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | Revert "genl: Add genlmsg_new_unicast() for unicast message allocation"Florian Westphal2016-02-181-5/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This reverts commit bb9b18fb55b0 ("genl: Add genlmsg_new_unicast() for unicast message allocation")'. Nothing wrong with it; its no longer needed since this was only for mmapped netlink support. Signed-off-by: Florian Westphal <fw@strlen.de> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | openvswitch: Revert: "Enable memory mapped Netlink i/o"Florian Westphal2016-02-181-7/+3
| | | | | | | | | | | | | | | | | | | | | | | | revert commit 795449d8b846 ("openvswitch: Enable memory mapped Netlink i/o"). Following the mmaped netlink removal this code can be removed. Signed-off-by: Florian Westphal <fw@strlen.de> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | net: add dst_cache to ovs vxlan lwtunnelPaolo Abeni2016-02-162-0/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In case of UDP traffic with datagram length below MTU this give about 2% performance increase when tunneling over ipv4 and about 60% when tunneling over ipv6 Signed-off-by: Paolo Abeni <pabeni@redhat.com> Suggested-and-acked-by: Hannes Frederic Sowa <hannes@stressinduktion.org> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | openvswitch: allow management from inside user namespacesTycho Andersen2016-02-111-10/+10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Operations with the GENL_ADMIN_PERM flag fail permissions checks because this flag means we call netlink_capable, which uses the init user ns. Instead, let's introduce a new flag, GENL_UNS_ADMIN_PERM for operations which should be allowed inside a user namespace. The motivation for this is to be able to run openvswitch in unprivileged containers. I've tested this and it seems to work, but I really have no idea about the security consequences of this patch, so thoughts would be much appreciated. v2: use the GENL_UNS_ADMIN_PERM flag instead of a check in each function v3: use separate ifs for UNS_ADMIN_PERM and ADMIN_PERM, instead of one massive one Reported-by: James Page <james.page@canonical.com> Signed-off-by: Tycho Andersen <tycho.andersen@canonical.com> CC: Eric Biederman <ebiederm@xmission.com> CC: Pravin Shelar <pshelar@ovn.org> CC: Justin Pettit <jpettit@nicira.com> CC: "David S. Miller" <davem@davemloft.net> Acked-by: Pravin B Shelar <pshelar@ovn.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* | | Merge branch 'for-linus' of ↵Linus Torvalds2016-03-171-1/+1
|\ \ \ | |_|/ |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial Pull trivial tree updates from Jiri Kosina. * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: drivers/rtc: broken link fix drm/i915 Fix typos in i915_gem_fence.c Docs: fix missing word in REPORTING-BUGS lib+mm: fix few spelling mistakes MAINTAINERS: add git URL for APM driver treewide: Fix typo in printk
| * | treewide: Fix typo in printkMasanari Iida2016-02-151-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | This patch fix spelling typos found in printk and Kconfig. Signed-off-by: Masanari Iida <standby24x7@gmail.com> Acked-by: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
* | | lwt: fix rx checksum setting for lwt devices tunneling over ipv6Paolo Abeni2016-02-191-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | the commit 35e2d1152b22 ("tunnels: Allow IPv6 UDP checksums to be correctly controlled.") changed the default xmit checksum setting for lwt vxlan/geneve ipv6 tunnels, so that now the checksum is not set into external UDP header. This commit changes the rx checksum setting for both lwt vxlan/geneve devices created by openvswitch accordingly, so that lwt over ipv6 tunnel pairs are again able to communicate with default values. Signed-off-by: Paolo Abeni <pabeni@redhat.com> Acked-by: Jiri Benc <jbenc@redhat.com> Acked-by: Jesse Gross <jesse@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* | | vxlan, gre, geneve: Set a large MTU on ovs-created tunnel devicesDavid Wragg2016-02-101-0/+2
| |/ |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Prior to 4.3, openvswitch tunnel vports (vxlan, gre and geneve) could transmit vxlan packets of any size, constrained only by the ability to send out the resulting packets. 4.3 introduced netdevs corresponding to tunnel vports. These netdevs have an MTU, which limits the size of a packet that can be successfully encapsulated. The default MTU values are low (1500 or less), which is awkwardly small in the context of physical networks supporting jumbo frames, and leads to a conspicuous change in behaviour for userspace. Instead, set the MTU on openvswitch-created netdevs to be the relevant maximum (i.e. the maximum IP packet size minus any relevant overhead), effectively restoring the behaviour prior to 4.3. Signed-off-by: David Wragg <david@weave.works> Signed-off-by: David S. Miller <davem@davemloft.net>
* | ovs: limit ovs recursions in ovs_execute_actions to not corrupt stackHannes Frederic Sowa2016-01-181-5/+14
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | It was seen that defective configurations of openvswitch could overwrite the STACK_END_MAGIC and cause a hard crash of the kernel because of too many recursions within ovs. This problem arises due to the high stack usage of openvswitch. The rest of the kernel is fine with the current limit of 10 (RECURSION_LIMIT). We use the already existing recursion counter in ovs_execute_actions to implement an upper bound of 5 recursions. Cc: Pravin Shelar <pshelar@ovn.org> Cc: Simon Horman <simon.horman@netronome.com> Cc: Eric Dumazet <eric.dumazet@gmail.com> Cc: Simon Horman <simon.horman@netronome.com> Signed-off-by: Hannes Frederic Sowa <hannes@stressinduktion.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* | net: preserve IP control block during GSO segmentationKonstantin Khlebnikov2016-01-151-4/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Skb_gso_segment() uses skb control block during segmentation. This patch adds 32-bytes room for previous control block which will be copied into all resulting segments. This patch fixes kernel crash during fragmenting forwarded packets. Fragmentation requires valid IP CB in skb for clearing ip options. Also patch removes custom save/restore in ovs code, now it's redundant. Signed-off-by: Konstantin Khlebnikov <koct9i@gmail.com> Link: http://lkml.kernel.org/r/CALYGNiP-0MZ-FExV2HutTvE9U-QQtkKSoE--KN=JQE5STYsjAA@mail.gmail.com Signed-off-by: David S. Miller <davem@davemloft.net>
* | openvswitch: update kernel doc for struct vportJean Sacren2016-01-101-1/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | commit be4ace6e6b1b ("openvswitch: Move dev pointer into vport itself") The commit above added @dev and moved @rcu to the bottom of struct vport, but the change was not reflected in the kernel doc. So let's update the kernel doc as well. Signed-off-by: Jean Sacren <sakiwit@gmail.com> Cc: Thomas Graf <tgraf@suug.ch> Acked-by: Thomas Graf <tgraf@suug.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
* | openvswitch: fix struct geneve_port member nameJean Sacren2016-01-101-3/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | commit 6b001e682e90 ("openvswitch: Use Geneve device.") The commit above introduced 'port_no' as the name for the member of struct geneve_port. The correct name should be 'dst_port' as described in the kernel doc. Let's fix that member name and all the pertinent instances so that both doc and code would be consistent. Signed-off-by: Jean Sacren <sakiwit@gmail.com> Acked-by: Thomas Graf <tgraf@suug.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
* | openvswitch: clean up unused functionJean Sacren2016-01-101-20/+0
| | | | | | | | | | | | | | | | | | | | | | | | commit 6b001e682e90 ("openvswitch: Use Geneve device.") The commit above deleted the only call site of ovs_tunnel_route_lookup() and now that function is not used any more. So let's delete the function definition as well. Signed-off-by: Jean Sacren <sakiwit@gmail.com> Acked-by: Thomas Graf <tgraf@suug.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
* | Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netDavid S. Miller2015-12-312-3/+8
|\ \
| * | openvswitch: Fix template leak in error cases.Joe Stringer2015-12-291-2/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Commit 5b48bb8506c5 ("openvswitch: Fix helper reference leak") fixed a reference leak on helper objects, but inadvertently introduced a leak on the ct template. Previously, ct_info.ct->general.use was initialized to 0 by nf_ct_tmpl_alloc() and only incremented when ovs_ct_copy_action() returned successful. If an error occurred while adding the helper or adding the action to the actions buffer, the __ovs_ct_free_action() cleanup would use nf_ct_put() to free the entry; However, this relies on atomic_dec_and_test(ct_info.ct->general.use). This reference must be incremented first, or nf_ct_put() will never free it. Fix the issue by acquiring a reference to the template immediately after allocation. Fixes: cae3a2627520 ("openvswitch: Allow attaching helpers to ct action") Fixes: 5b48bb8506c5 ("openvswitch: Fix helper reference leak") Signed-off-by: Joe Stringer <joe@ovn.org> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | openvswitch: correct encoding of set tunnel action attributesSimon Horman2015-12-181-1/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In a set action tunnel attributes should be encoded in a nested action. I noticed this because ovs-dpctl was reporting an error when dumping flows due to the incorrect encoding of tunnel attributes in a set action. Fixes: fc4099f17240 ("openvswitch: Fix egress tunnel info.") Signed-off-by: Simon Horman <simon.horman@netronome.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | | Merge git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf-nextDavid S. Miller2015-12-181-20/+5
|\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pablo Neira Ayuso says: ==================== Netfilter updates for net-next The following patchset contains the first batch of Netfilter updates for the upcoming 4.5 kernel. This batch contains userspace netfilter header compilation fixes, support for packet mangling in nf_tables, the new tracing infrastructure for nf_tables and cgroup2 support for iptables. More specifically, they are: 1) Two patches to include dependencies in our netfilter userspace headers to resolve compilation problems, from Mikko Rapeli. 2) Four comestic cleanup patches for the ebtables codebase, from Ian Morris. 3) Remove duplicate include in the netfilter reject infrastructure, from Stephen Hemminger. 4) Two patches to simplify the netfilter defragmentation code for IPv6, patch from Florian Westphal. 5) Fix root ownership of /proc/net netfilter for unpriviledged net namespaces, from Philip Whineray. 6) Get rid of unused fields in struct nft_pktinfo, from Florian Westphal. 7) Add mangling support to our nf_tables payload expression, from Patrick McHardy. 8) Introduce a new netlink-based tracing infrastructure for nf_tables, from Florian Westphal. 9) Change setter functions in nfnetlink_log to be void, from Rami Rosen. 10) Add netns support to the cttimeout infrastructure. 11) Add cgroup2 support to iptables, from Tejun Heo. 12) Introduce nfnl_dereference_protected() in nfnetlink, from Florian. 13) Add support for mangling pkttype in the nf_tables meta expression, also from Florian. BTW, I need that you pull net into net-next, I have another batch that requires changes that I don't yet see in net. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
| * \ \ Merge branch 'master' of ↵Pablo Neira Ayuso2015-12-146-11/+19
| |\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next Resolve conflict between commit 264640fc2c5f4f ("ipv6: distinguish frag queues by device for multicast and link-local packets") from the net tree and commit 029f7f3b8701c ("netfilter: ipv6: nf_defrag: avoid/free clone operations") from the nf-next tree. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org> Conflicts: net/ipv6/netfilter/nf_conntrack_reasm.c
| * | | | netfilter: ipv6: avoid nf_iterate recursionFlorian Westphal2015-11-231-6/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The previous patch changed nf_ct_frag6_gather() to morph reassembled skb with the previous one. This means that the return value is always NULL or the skb argument. So change it to an err value. Instead of invoking NF_HOOK recursively with threshold to skip already-called hooks we can now just return NF_ACCEPT to move on to the next hook except for -EINPROGRESS (which means skb has been queued for reassembly), in which case we return NF_STOLEN. Signed-off-by: Florian Westphal <fw@strlen.de> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
| * | | | netfilter: ipv6: nf_defrag: avoid/free clone operationsFlorian Westphal2015-11-231-14/+0
| | |_|/ | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | commit 6aafeef03b9d9ecf ("netfilter: push reasm skb through instead of original frag skbs") changed ipv6 defrag to not use the original skbs anymore. So rather than keeping the original skbs around just to discard them afterwards just use the original skbs directly for the fraglist of the newly assembled skb and remove the extra clone/free operations. The skb that completes the fragment queue is morphed into a the reassembled one instead, just like ipv4 defrag. openvswitch doesn't need any additional skb_morph magic anymore to deal with this situation so just remove that. A followup patch can then also remove the NF_HOOK (re)invocation in the ipv6 netfilter defrag hook. Cc: Joe Stringer <joestringer@nicira.com> Signed-off-by: Florian Westphal <fw@strlen.de> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* | | | Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netDavid S. Miller2015-12-171-3/+13
|\ \ \ \ | |_|/ / |/| | / | | |/ | |/| | | | | | | | | | | | | | | | | | | Conflicts: drivers/net/geneve.c Here we had an overlapping change, where in 'net' the extraneous stats bump was being removed whilst in 'net-next' the final argument to udp_tunnel6_xmit_skb() was being changed. Signed-off-by: David S. Miller <davem@davemloft.net>
| * | openvswitch: Respect conntrack zone even if invalidJoe Stringer2015-12-111-2/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | If userspace executes ct(zone=1), and the connection tracker determines that the packet is invalid, then the ct_zone flow key field is populated with the default zone rather than the zone that was specified. Even though connection tracking failed, this field should be updated with the value that the action specified. Fix the issue. Fixes: 7f8a436eaa2c ("openvswitch: Add conntrack action") Signed-off-by: Joe Stringer <joe@ovn.org> Acked-by: Pravin B Shelar <pshelar@nicira.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | openvswitch: Fix helper reference leakJoe Stringer2015-12-111-1/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | If the actions (re)allocation fails, or the actions list is larger than the maximum size, and the conntrack action is the last action when these problems are hit, then references to helper modules may be leaked. Fix the issue. Fixes: cae3a2627520 ("openvswitch: Allow attaching helpers to ct action") Signed-off-by: Joe Stringer <joe@ovn.org> Acked-by: Pravin B Shelar <pshelar@nicira.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | | Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netDavid S. Miller2015-12-036-10/+18
|\| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Conflicts: drivers/net/ethernet/renesas/ravb_main.c kernel/bpf/syscall.c net/ipv4/ipmr.c All three conflicts were cases of overlapping changes. Signed-off-by: David S. Miller <davem@davemloft.net>
| * | openvswitch: fix hangup on vxlan/gre/geneve device deletionPaolo Abeni2015-12-032-3/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Each openvswitch tunnel vport (vxlan,gre,geneve) holds a reference to the underlying tunnel device, but never released it when such device is deleted. Deleting the underlying device via the ip tool cause the kernel to hangup in the netdev_wait_allrefs() loop. This commit ensure that on device unregistration dp_detach_port_notify() is called for all vports that hold the device reference, properly releasing it. Fixes: 614732eaa12d ("openvswitch: Use regular VXLAN net_device device") Fixes: b2acd1dc3949 ("openvswitch: Use regular GRE net_device instead of vport") Fixes: 6b001e682e90 ("openvswitch: Use Geneve device.") Signed-off-by: Paolo Abeni <pabeni@redhat.com> Acked-by: Flavio Leitner <fbl@sysclose.org> Acked-by: Pravin B Shelar <pshelar@nicira.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | openvswitch: properly refcount vport-vxlan modulePaolo Abeni2015-12-024-5/+9
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | After 614732eaa12d, no refcount is maintained for the vport-vxlan module. This allows the userspace to remove such module while vport-vxlan devices still exist, which leads to later oops. v1 -> v2: - move vport 'owner' initialization in ovs_vport_ops_register() and make such function a macro Fixes: 614732eaa12d ("openvswitch: Use regular VXLAN net_device device") Signed-off-by: Paolo Abeni <pabeni@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | net: openvswitch: Remove invalid commentAaron Conole2015-11-241-2/+2
| |/ | | | | | | | | | | | | | | | | | | | | | | During pre-upstream development, the openvswitch datapath used a custom hashtable to store vports that could fail on delete due to lack of memory. However, prior to upstream submission, this code was reworked to use an hlist based hastable with flexible-array based buckets. As such the failure condition was eliminated from the vport_del path, rendering this comment invalid. Signed-off-by: Aaron Conole <aconole@bytheb.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* | net: add possibility to pass information about upper device via notifierJiri Pirko2015-12-031-1/+1
| | | | | | | | | | | | | | | | | | Sometimes the drivers and other code would find it handy to know some internal information about upper device being changed. So allow upper-code to pass information down to notifier listeners during linking. Signed-off-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | net: propagate upper priv via netdev_master_upper_dev_linkJiri Pirko2015-12-031-1/+1
|/ | | | | | | | Eliminate netdev_master_upper_dev_link_private and pass priv directly as a parameter of netdev_master_upper_dev_link. Signed-off-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* Merge branch 'for-linus' of ↵Linus Torvalds2015-11-071-1/+1
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial Pull trivial updates from Jiri Kosina: "Trivial stuff from trivial tree that can be trivially summed up as: - treewide drop of spurious unlikely() before IS_ERR() from Viresh Kumar - cosmetic fixes (that don't really affect basic functionality of the driver) for pktcdvd and bcache, from Julia Lawall and Petr Mladek - various comment / printk fixes and updates all over the place" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: bcache: Really show state of work pending bit hwmon: applesmc: fix comment typos Kconfig: remove comment about scsi_wait_scan module class_find_device: fix reference to argument "match" debugfs: document that debugfs_remove*() accepts NULL and error values net: Drop unlikely before IS_ERR(_OR_NULL) mm: Drop unlikely before IS_ERR(_OR_NULL) fs: Drop unlikely before IS_ERR(_OR_NULL) drivers: net: Drop unlikely before IS_ERR(_OR_NULL) drivers: misc: Drop unlikely before IS_ERR(_OR_NULL) UBI: Update comments to reflect UBI_METAONLY flag pktcdvd: drop null test before destroy functions
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