- 13 Apr, 2016 20 commits
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Florian Westphal authored
Validate that all matches (if any) add up to the beginning of the target and that each match covers at least the base structure size. The compat path should be able to safely re-use the function as the structures only differ in alignment; added a BUILD_BUG_ON just in case we have an arch that adds padding as well. Signed-off-by:
Florian Westphal <fw@strlen.de> Signed-off-by:
Pablo Neira Ayuso <pablo@netfilter.org>
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Florian Westphal authored
We're currently asserting that targetoff + targetsize <= nextoff. Extend it to also check that targetoff is >= sizeof(xt_entry). Since this is generic code, add an argument pointing to the start of the match/target, we can then derive the base structure size from the delta. We also need the e->elems pointer in a followup change to validate matches. Signed-off-by:
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Florian Westphal authored
We have targets and standard targets -- the latter carries a verdict. The ip/ip6tables validation functions will access t->verdict for the standard targets to fetch the jump offset or verdict for chainloop detection, but this happens before the targets get checked/validated. Thus we also need to check for verdict presence here, else t->verdict can point right after a blob. Spotted with UBSAN while testing malformed blobs. Signed-off-by:
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Florian Westphal authored
32bit rulesets have different layout and alignment requirements, so once more integrity checks get added to xt_check_entry_offsets it will reject well-formed 32bit rulesets. Signed-off-by:
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Florian Westphal authored
The target size includes the size of the xt_entry_target struct. Signed-off-by:
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Florian Westphal authored
Once we add more sanity testing to xt_check_entry_offsets it becomes relvant if we're expecting a 32bit 'config_compat' blob or a normal one. Since we already have a lot of similar-named functions (check_entry, compat_check_entry, find_and_check_entry, etc.) and the current incarnation is short just fold its contents into the callers. Signed-off-by:
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Florian Westphal authored
Currently arp/ip and ip6tables each implement a short helper to check that the target offset is large enough to hold one xt_entry_target struct and that t->u.target_size fits within the current rule. Unfortunately these checks are not sufficient. To avoid adding new tests to all of ip/ip6/arptables move the current checks into a helper, then extend this helper in followup patches. Signed-off-by:
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Florian Westphal authored
When we see a jump also check that the offset gets us to beginning of a rule (an ipt_entry). The extra overhead is negible, even with absurd cases. 300k custom rules, 300k jumps to 'next' user chain: [ plus one jump from INPUT to first userchain ]: Before: real 0m24.874s user 0m7.532s sys 0m16.076s After: real 0m27.464s user 0m7.436s sys 0m18.840s Signed-off-by:
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Florian Westphal authored
Ben Hawkes says: In the mark_source_chains function (net/ipv4/netfilter/ip_tables.c) it is possible for a user-supplied ipt_entry structure to have a large next_offset field. This field is not bounds checked prior to writing a counter value at the supplied offset. Base chains enforce absolute verdict. User defined chains are supposed to end with an unconditional return, xtables userspace adds them automatically. But if such return is missing we will move to non-existent next rule. Reported-by:
Ben Hawkes <hawkes@google.com> Signed-off-by:
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Jon Paul Maloy authored
We remove a couple of leftover fields in struct tipc_bearer. Those were used by the old broadcast implementation, and are not needed any longer. There is no functional changes in this commit. Acked-by:
Ying Xue <ying.xue@windriver.com> Signed-off-by:
Jon Maloy <jon.maloy@ericsson.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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David S. Miller authored
John Crispin says: ==================== net: mediatek: make the driver pass stress tests While testing the driver we managed to get the TX path to stall and fail to recover. When dual MAC support was added to the driver, the whole queue stop/wake code was not properly adapted. There was also a regression in the locking of the xmit function. The fact that watchdog_timeo was not set and that the tx_timeout code failed to properly reset the dma, irq and queue just made the mess complete. This series make the driver pass stress testing. With this series applied the testbed has been running for several days and still has not locked up. We have a second setup that has a small hack patch applied to randomly stop irqs and/or one of the queues and successfully manages to recover from these simulated tx stalls. ==================== Signed-off-by: -
John Crispin authored
The QID field gets set to the mac id. This made the DMA linked list queue the traffic of each MAC on a different internal queue. However during long term testing we found that this will cause traffic stalls as the multi queue setup requires a more complete initialisation which is not part of the upstream driver yet. This patch removes the code setting the QID field, resulting in all traffic ending up in queue 0 which works without any special setup. Signed-off-by:
John Crispin <blogic@openwrt.org> Signed-off-by:
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John Crispin authored
The worker always touches both netdevs. It is ethernet core and not MAC specific. We only need one worker, which belongs into the ethernets core struct. Signed-off-by:
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John Crispin authored
The driver supports 2 MACs. Both run on the same DMA ring. If we hit a TX timeout we need to stop both netdevs before restarting them again. If we don't do this, mtk_stop() wont shutdown DMA and the consecutive call to mtk_open() wont restart DMA and enable IRQs. Signed-off-by:
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John Crispin authored
Inside the TX path there is a lock inside the tx_map function. This is however too late. The patch moves the lock to the start of the xmit function right before the free count check of the DMA ring happens. If we do not do this, the code becomes racy leading to TX stalls and dropped packets. This happens as there are 2 netdevs running on the same physical DMA ring. Signed-off-by:
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John Crispin authored
The driver supports 2 MACs. Both run on the same DMA ring. If we go above/below the TX rings threshold value, we always need to wake/stop the queue of both devices. Not doing to can cause TX stalls and packet drops on one of the devices. Signed-off-by:
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John Crispin authored
HW reset is triggered in the mtk_hw_init() function. There is no need to also reset the core during probe. Signed-off-by:
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John Crispin authored
The code used to also support the PDMA engine, which had 2 packet pointers per descriptor. Because of this we had to divide the result by 2 and round it up. This is no longer needed as the code only supports QDMA. Signed-off-by:
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John Crispin authored
The original commit failed to set watchdog_timeo. This patch sets watchdog_timeo to HZ. Signed-off-by:
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git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf-nextDavid S. Miller authored
Pablo Neira Ayuso says: ==================== Netfilter updates for net-next The following patchset contains the first batch of Netfilter updates for your net-next tree. 1) Define pr_fmt() in nf_conntrack, from Weongyo Jeong. 2) Define and register netfilter's afinfo for the bridge family, this comes in preparation for native nfqueue's bridge for nft, from Stephane Bryant. 3) Add new attributes to store layer 2 and VLAN headers to nfqueue, also from Stephane Bryant. 4) Parse new NFQA_VLAN and NFQA_L2HDR nfqueue netlink attributes coming from userspace, from Stephane Bryant. 5) Use net->ipv6.devconf_all->hop_limit instead of hardcoded hop_limit in IPv6 SYNPROXY, from Liping Zhang. 6) Remove unnecessary check for dst == NULL in nf_reject_ipv6, from Haishuang Yan. 7) Deinline ctnetlink event report functions, from Florian Westphal. ==================== Signed-off-by:
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- 12 Apr, 2016 4 commits
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Florian Westphal authored
Not performance critical, it is only invoked when an expectation is added/destroyed. While at it, kill unused nf_ct_expect_event() wrapper. Signed-off-by:
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Florian Westphal authored
Way too large; move it to nf_conntrack_ecache.c. Reduces total object size by 1216 byte on my machine. Signed-off-by:
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David S. Miller authored
Merge branch 'for-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth-next Johan Hedberg says: ==================== pull request: bluetooth-next 2016-04-12 Here's a set of Bluetooth & 802.15.4 patches intended for the 4.7 kernel: - Fix for race condition in vhci driver - Memory leak fix for ieee802154/adf7242 driver - Improvements to deal with single-mode (LE-only) Bluetooth controllers - Fix for allowing the BT_SECURITY_FIPS security level - New BCM2E71 ACPI ID - NULL pointer dereference fix fox hci_ldisc driver Let me know if there are any issues pulling. Thanks. ==================== Signed-off-by:
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Andrew Lunn authored
MDIO devices can be stacked upon each other. The current code supports two levels, which until recently has been enough for a DSA mdio bus on top of another bus. Now we have hardware which has an MDIO mux in the middle. Define an MDIO MUTEX class with three levels. Signed-off-by:
Andrew Lunn <andrew@lunn.ch> Signed-off-by:
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- 11 Apr, 2016 16 commits
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David S. Miller authored
David Howells says: ==================== RxRPC: 2nd rewrite part 1 Okay, I'm in the process of rewriting the RxRPC rewrite. The primary aim of this second rewrite is to strictly control the number of active connections we know about and to get rid of connections we don't need much more quickly. On top of this, there are fixes to the protocol handling which will all occur in later parts. Here's the first set of patches from the second go, aimed at net-next. These are all fixes and cleanups preparatory to the main event. Notable parts of this set include: (1) A fix for the AFS filesystem to wait for outstanding calls to complete before closing the RxRPC socket. (2) Differentiation of local and remote abort codes. At a future point userspace will get to see this via control message data on recvmsg(). (3) Absorb the rxkad module into the af_rxrpc module to prevent a dependency loop. (4) Create a null security module and unconditionalise calls into the security module that's in force (there will always be a security module applied to a connection, even if it's just the null one). ==================== Signed-off-by: -
David Howells authored
Create a null security type for security index 0 and get rid of all conditional calls to the security operations. We expect normally to be using security, so this should be of little negative impact. Signed-off-by:
David Howells <dhowells@redhat.com> Signed-off-by:
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David Howells authored
Absorb the rxkad security module into the af_rxrpc module so that there's only one module file. This avoids a circular dependency whereby rxkad pins af_rxrpc and cached connections pin rxkad but can't be manually evicted (they will expire eventually and cease pinning). With this change, af_rxrpc can just be unloaded, despite having cached connections. Signed-off-by:
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David Howells authored
Don't assume transport address family and size when using the peer address to send a packet. Instead, use the start of the transport address rather than any particular element of the union and use the transport address length noted inside the sockaddr_rxrpc struct. This will be necessary when IPv6 support is introduced. Signed-off-by:
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David Howells authored
Don't pass gfp around in incoming call handling functions, but rather hard code it at the points where we actually need it since the value comes from within the rxrpc driver and is always the same. Signed-off-by:
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David Howells authored
In the rxrpc_connection and rxrpc_call structs, there's one field to hold the abort code, no matter whether that value was generated locally to be sent or was received from the peer via an abort packet. Split the abort code fields in two for cleanliness sake and add an error field to hold the Linux error number to the rxrpc_call struct too (sometimes this is generated in a context where we can't return it to userspace directly). Furthermore, add a skb mark to indicate a packet that caused a local abort to be generated so that recvmsg() can pick up the correct abort code. A future addition will need to be to indicate to userspace the difference between aborts via a control message. Signed-off-by:
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David Howells authored
Static arrays of strings should be const char *const[]. Signed-off-by:
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David Howells authored
Move some miscellaneous bits out into their own file to make it easier to split the call handling. Signed-off-by:
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David Howells authored
Disable a debugging statement that has been left enabled Signed-off-by:
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David Howells authored
The afs filesystem needs to wait for any outstanding asynchronous calls (such as FS.GiveUpCallBacks cleaning up the callbacks lodged with a server) to complete before closing the AF_RXRPC socket when unloading the module. This may occur if the module is removed too quickly after unmounting all filesystems. This will produce an error report that looks like: AFS: Assertion failed 1 == 0 is false 0x1 == 0x0 is false ------------[ cut here ]------------ kernel BUG at ../fs/afs/rxrpc.c:135! ... RIP: 0010:[<ffffffffa004111c>] afs_close_socket+0xec/0x107 [kafs] ... Call Trace: [<ffffffffa004a160>] afs_exit+0x1f/0x57 [kafs] [<ffffffff810c30a0>] SyS_delete_module+0xec/0x17d [<ffffffff81610417>] entry_SYSCALL_64_fastpath+0x12/0x6b Signed-off-by:
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David S. Miller authored
Willem de Bruijn says: ==================== net: fix udp pull header breakage Commit e6afc8ac ("udp: remove headers from UDP packets before queueing") modified udp receive processing to pull headers before enqueue and to not expect them on dequeue. The patch missed protocols on top of udp with in-kernel implementations that have their own skb_recv_datagram calls and dequeue logic. Modify these datapaths to also no longer expect a udp header at skb->data. Sunrpc and rxrpc are the only two protocols that call this function and contain references to udphr (some others, like tipc, are based on encap_rcv, which acts before enqueue, before the the header pull). ==================== Signed-off-by:
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Willem de Bruijn authored
Commit e6afc8ac modified the udp receive path by pulling the udp header before queuing an skbuff onto the receive queue. Rxrpc also calls skb_recv_datagram to dequeue an skb from a udp socket. Modify this receive path to also no longer expect udp headers. Fixes: e6afc8ac ("udp: remove headers from UDP packets before queueing") Signed-off-by:
Willem de Bruijn <willemb@google.com> Tested-by:
Thierry Reding <treding@nvidia.com> Signed-off-by:
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Willem de Bruijn authored
Commit e6afc8ac modified the udp receive path by pulling the udp header before queuing an skbuff onto the receive queue. Sunrpc also calls skb_recv_datagram to dequeue an skb from a udp socket. Modify this receive path to also no longer expect udp headers. Fixes: e6afc8ac ("udp: remove headers from UDP packets before queueing") Reported-by:
Franklin S Cooper Jr. <fcooper@ti.com> Signed-off-by:
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David Ahern authored
Multipath route lookups should consider knowledge about next hops and not select a hop that is known to be failed. Example: [h2] [h3] 15.0.0.5 | | 3| 3| [SP1] [SP2]--+ 1 2 1 2 | | /-------------+ | | \ / | | X | | / \ | | / \---------------\ | 1 2 1 2 12.0.0.2 [TOR1] 3-----------------3 [TOR2] 12.0.0.3 4 4 \ / \ / \ / -------| |-----/ 1 2 [TOR3] 3| | [h1] 12.0.0.1 host h1 with IP 12.0.0.1 has 2 paths to host h3 at 15.0.0.5: root@h1:~# ip ro ls ... 12.0.0.0/24 dev swp1 proto kernel scope link src 12.0.0.1 15.0.0.0/16 nexthop via 12.0.0.2 dev swp1 weight 1 nexthop via 12.0.0.3 dev swp1 weight 1 ... If the link between tor3 and tor1 is down and the link between tor1 and tor2 then tor1 is effectively cut-off from h1. Yet the route lookups in h1 are alternating between the 2 routes: ping 15.0.0.5 gets one and ssh 15.0.0.5 gets the other. Connections that attempt to use the 12.0.0.2 nexthop fail since that neighbor is not reachable: root@h1:~# ip neigh show ... 12.0.0.3 dev swp1 lladdr 00:02:00:00:00:1b REACHABLE 12.0.0.2 dev swp1 FAILED ... The failed path can be avoided by considering known neighbor information when selecting next hops. If the neighbor lookup fails we have no knowledge about the nexthop, so give it a shot. If there is an entry then only select the nexthop if the state is sane. This is similar to what fib_detect_death does. To maintain backward compatibility use of the neighbor information is based on a new sysctl, fib_multipath_use_neigh. Signed-off-by:David Ahern <dsa@cumulusnetworks.com> Reviewed-by:
Julian Anastasov <ja@ssi.bg> Signed-off-by:
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David S. Miller authored
Grygorii Strashko says: ==================== drivers: net: cpsw: fix ale calls and drop host_port field from cpsw_priv This clean up series intended to: - fix port_mask parameters in ale calls and drop unnecessary shifts - drop host_port field from struct cpsw_priv ==================== Signed-off-by: -
Grygorii Strashko authored
The host_port field is constantly assigned to 0 and this value has never changed (since time when cpsw driver was introduced. More over, if this field will be assigned to non 0 value it will break current driver functionality. Hence, there are no reasons to continue maintaining this host_port field and it can be removed, and the HOST_PORT_NUM and ALE_PORT_HOST defines can be used instead. Signed-off-by:
Grygorii Strashko <grygorii.strashko@ti.com> Signed-off-by:
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