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2017-08-11drivers: net: davinci_mdio: print bus frequencyMaxim Uvarov1-2/+4
Frequency can be adjusted in DT it make sense to print current used value on driver init. Signed-off-by: Max Uvarov <muvarov@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-11drivers: net: davinci_mdio: remove busy loop on wait user accessMaxim Uvarov1-1/+3
Polling 14 mdio devices on single mdio bus eats 30% of 1Ghz cpu time due to busy loop in wait(). Add small delay to relax cpu. Signed-off-by: Max Uvarov <muvarov@gmail.com> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Reviewed-by: Grygorii Strashko <grygorii.strashko@ti.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-11Merge branch 'netvsc-minor-fixes-and-improvements'David S. Miller3-95/+227
Stephen Hemminger says: ==================== netvsc: minor fixes and improvements These are non-critical bug fixes, related to functionality now in net-next. 1. delaying the automatic bring up of VF device to allow udev to change name. 2. performance improvement 3. handle MAC address change with VF; mostly propogate the error that VF gives. 4. minor cleanups 5. allow setting send/receive buffer size with ethtool. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-11netvsc: keep track of some non-fatal overload conditionsstephen hemminger3-6/+17
Add ethtool statistics for case where send chimmeny buffer is exhausted and driver has to fall back to doing scatter/gather send. Also, add statistic for case where ring buffer is full and receive completions are delayed. Signed-off-by: Stephen Hemminger <sthemmin@microsoft.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-11netvsc: allow controlling send/recv buffer sizestephen hemminger3-39/+157
Control the size of the buffer areas via ethtool ring settings. They aren't really traditional hardware rings, but host API breaks receive and send buffer into chunks. The final size of the chunks are controlled by the host. The default value of send and receive buffer area for host DMA is much larger than it needs to be. Experimentation shows that 4M receive and 1M send is sufficient. Signed-off-by: Stephen Hemminger <sthemmin@microsoft.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-11netvsc: remove unnecessary check for NULL hdrstephen hemminger1-4/+3
The function init_page_array is always called with a valid pointer to RNDIS header. No check for NULL is needed. Signed-off-by: Stephen Hemminger <sthemmin@microsoft.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-11netvsc: remove unnecessary cast of void pointerstephen hemminger1-5/+4
Assignment to a typed pointer is sufficient in C. No cast is needed. Signed-off-by: Stephen Hemminger <sthemmin@microsoft.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-11netvsc: whitespace cleanupstephen hemminger1-5/+6
Fix some minor indentation issues. Signed-off-by: Stephen Hemminger <sthemmin@microsoft.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-11netvsc: no need to allocate send/receive on numa nodestephen hemminger1-14/+5
The send and receive buffers are both per-device (not per-channel). The associated NUMA node is a property of the CPU which is per-channel therefore it makes no sense to force the receive/send buffer to be allocated on a particular node (since it is a shared resource). Signed-off-by: Stephen Hemminger <sthemmin@microsoft.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-11netvsc: check error return when restoring channels and mtustephen hemminger1-2/+14
If setting new values fails, and the attempt to restore original settings fails. Then log an error and leave device down. This should never happen, but if it does don't go down in flames. Signed-off-by: Stephen Hemminger <sthemmin@microsoft.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-11netvsc: propagate MAC address change to VF slavestephen hemminger1-11/+15
If VF is slaved to synthetic device, then any change to netvsc MAC address should be propagated to the slave device. If slave device doesn't support MAC address change then it should also be an error to attempt to change synthetic NIC MAC address. It also fixes the error unwind in the original code. If give a bad address, the old code would change the device MAC address anyway. Reviewed-by: Haiyang Zhang <haiyangz@microsoft.com> Signed-off-by: Stephen Hemminger <sthemmin@microsoft.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-11netvsc: don't signal host twice if emptystephen hemminger1-4/+0
When hv_pkt_iter_next() returns NULL, it has already called hv_pkt_iter_close(). Calling it twice can lead to extra host signal. Signed-off-by: Stephen Hemminger <sthemmin@microsoft.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-11netvsc: delay setup of VF devicestephen hemminger2-8/+9
When VF device is discovered, delay bring it automatically up in order to allow userspace to some simple changes (like renaming). Reported-by: Vitaly Kuznetsov <vkuznets@redhat.com> Signed-off-by: Stephen Hemminger <sthemmin@microsoft.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-11phylink: Fix an uninitialized variable bugDan Carpenter1-1/+1
"ret" isn't necessarily initialized here. Fixes: 9525ae83959b ("phylink: add phylink infrastructure") Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-11liquidio: removed check for queue size alignmentIntiyaz Basha1-7/+0
There is no restriction on queue size alignment. Hence removing check for valid queue size. Signed-off-by: Intiyaz Basha <intiyaz.basha@cavium.com> Signed-off-by: Felix Manlunas <felix.manlunas@cavium.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-11liquidio: rx/tx queue cleanupIntiyaz Basha2-0/+8
When deleting a queue, clear its corresponding bit in the qmask, vfree its memory, clear out the pointer that's pointing to it, and decrement the queue count. Signed-off-by: Intiyaz Basha <intiyaz.basha@cavium.com> Signed-off-by: Felix Manlunas <fmanlunas@cavium.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-11Merge branch 'net-sched-let-the-offloader-decide-what-to-offload'David S. Miller16-47/+61
Jiri Pirko says: ==================== net: sched: let the offloader decide what to offload Currently there is a Qdisc_class_ops->tcf_cl_offload callback that is called to find out if cls would offload rule or not. This is only supported by sch_ingress and sch_clsact. So the Qdisc are to decide. However, the driver knows what is he able to offload, so move the decision making to drivers completely. Just pass classid there and provide set of helpers to allow identification of qdisc. As a side effect, this actually allows clsact egress rules offload in mlxsw. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-11net: sched: remove cops->tcf_cl_offloadJiri Pirko7-36/+15
cops->tcf_cl_offload is no longer needed, as the drivers check what they can and cannot offload using the classid identify helpers. So remove this. Signed-off-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-11net: sched: remove handle propagation down to the driversJiri Pirko1-2/+0
There is no longer need to use handle in drivers, so remove it from tc_cls_common_offload struct. Signed-off-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-11net: sched: use newly added classid identity helpersJiri Pirko8-9/+30
Instead of checking handle, which does not have the inner class information and drivers wrongly assume clsact->egress as ingress, use the newly introduced classid identification helpers. Signed-off-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-11net: sched: propagate classid down to offload driversJiri Pirko1-0/+2
Drivers need classid to decide they support this specific qdisc+class or not. So propagate it down via the tc_cls_common_offload struct. Signed-off-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-11net: sched: Add helpers to identify classidsJiri Pirko1-0/+14
Offloading drivers need to understand what qdisc class a filter is added to. Currently they only need to identify ingress, clsact->ingress and clsact->egress. So provide these helpers. Signed-off-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-11geneve: use netlink_ext_ack for error reporting in rtnl operationsGirish Moodalbail1-36/+92
Add extack error messages for failure paths while creating/modifying geneve devices. Once extack support is added to iproute2, more meaningful and helpful error messages will be displayed making it easy for users to discern what went wrong. Before: ======= $ ip link add gen1 address 0:1:2:3:4:5:6 type geneve id 200 \ remote 192.168.13.2 RTNETLINK answers: Invalid argument After: ====== $ ip link add gen1 address 0:1:2:3:4:5:6 type geneve id 200 \ remote 192.168.13.2 Error: Provided link layer address is not Ethernet Also, netdev_dbg() calls used to log errors associated with Netlink request have been removed. Signed-off-by: Girish Moodalbail <girish.moodalbail@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-11Merge branch 'sctp-remove-typedefs-from-structures-part-6'David S. Miller11-1072/+1104
Xin Long says: ==================== sctp: remove typedefs from structures part 6 As we know, typedef is suggested not to use in kernel, even checkpatch.pl also gives warnings about it. Now sctp is using it for many structures. All this kind of typedef's using should be removed. This patchset is the part 6 to remove all typedefs in include/net/sctp/structs.h, command.h and sm.h. Just as the part 1-5, No any code's logic would be changed in these patches, only cleaning up. Note that this is the last part for this typedef cleaning up. after this patchset, no more inappropriate typedefs in sctp. It's also to tidy some codes when removing them, like fixing many indents, reodering some local params, especially in the last 2 patches. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-11sctp: fix some indents in sm_make_chunk.cXin Long2-257/+249
There are some bad indents of functions' defination in sm_make_chunk.c. They have been there since beginning, it was probably caused by that the typedef sctp_chunk_t was replaced with struct sctp_chunk. So it's the best time to fix them in this patchset, it's also to fix some bad indents in other functions' defination in sm_make_chunk.c. Signed-off-by: Xin Long <lucien.xin@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-11sctp: remove the typedef sctp_disposition_tXin Long4-680/+716
This patch is to remove the typedef sctp_disposition_t, and replace with enum sctp_disposition in the places where it's using this typedef. It's also to fix the indent for many functions' defination. Signed-off-by: Xin Long <lucien.xin@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-11sctp: remove the typedef sctp_sm_table_entry_tXin Long3-21/+29
This patch is to remove the typedef sctp_sm_table_entry_t, and replace with struct sctp_sm_table_entry in the places where it's using this typedef. It is also to fix some indents. Signed-off-by: Xin Long <lucien.xin@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-11sctp: remove the unused typedef sctp_sm_command_tXin Long1-5/+0
Remove this typedef including the struct, there is even no places using it. Signed-off-by: Xin Long <lucien.xin@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-11sctp: remove the typedef sctp_verb_tXin Long2-6/+6
This patch is to remove the typedef sctp_verb_t, and replace with enum sctp_verb in the places where it's using this typedef. Signed-off-by: Xin Long <lucien.xin@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-11sctp: remove the typedef sctp_arg_tXin Long2-14/+14
This patch is to remove the typedef sctp_arg_t, and replace with union sctp_arg in the places where it's using this typedef. Signed-off-by: Xin Long <lucien.xin@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-11sctp: remove the typedef sctp_cmd_seq_tXin Long5-143/+145
This patch is to remove the typedef sctp_cmd_seq_t, and replace with struct sctp_cmd_seq in the places where it's using this typedef. Note that it doesn't fix many indents although it should, as sctp_disposition_t's removal would mess them up again. So better to fix them when removing sctp_disposition_t in the later patch. Signed-off-by: Xin Long <lucien.xin@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-11sctp: remove the typedef sctp_cmd_tXin Long2-8/+8
This patch is to remove the typedef sctp_cmd_t, and replace with enum sctp_cmd in the places where it's using this typedef. Signed-off-by: Xin Long <lucien.xin@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-11sctp: remove the typedef sctp_socket_type_tXin Long3-7/+9
This patch is to remove the typedef sctp_socket_type_t, and replace with enum sctp_socket_type in the places where it's using this typedef. Signed-off-by: Xin Long <lucien.xin@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-11sctp: remove the typedef sctp_dbg_objcnt_entry_tXin Long2-3/+3
This patch is to remove the typedef sctp_dbg_objcnt_entry_t, and replace with struct sctp_dbg_objcnt_entry in the places where it's using this typedef. Signed-off-by: Xin Long <lucien.xin@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-11sctp: remove the typedef sctp_cmsgs_tXin Long2-6/+7
This patch is to remove the typedef sctp_cmsgs_t, and replace with struct sctp_cmsgs in the places where it's using this typedef. Signed-off-by: Xin Long <lucien.xin@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-11sctp: remove the typedef sctp_endpoint_type_tXin Long1-3/+3
This patch is to remove the typedef sctp_endpoint_type_t, and replace with enum sctp_endpoint_type in the places where it's using this typedef. Signed-off-by: Xin Long <lucien.xin@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-11sctp: remove the typedef sctp_sender_hb_info_tXin Long4-14/+12
This patch is to remove the typedef sctp_sender_hb_info_t, and replace with struct sctp_sender_hb_info in the places where it's using this typedef. It is also to use sizeof(variable) instead of sizeof(type). Signed-off-by: Xin Long <lucien.xin@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-11sctp: remove the unused typedef sctp_packet_phandler_tXin Long1-2/+0
Remove this function typedef, there is even no places using it. Signed-off-by: Xin Long <lucien.xin@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-10Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netDavid S. Miller25-47/+188
Mainline had UFO fixes, but UFO is removed in net-next so we take the HEAD hunks. Minor context conflict in bcmsysport statistics bug fix. Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-10Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netLinus Torvalds10-22/+33
Pull networking fixes from David Miller: 1) Fix handling of initial STATE message in TIPC, from Jon Paul Maloy. 2) Fix stats handling in bcm_sysport_get_stats(), from Florian Fainelli. 3) Reject 16777215 VNI value in geneve_validate(), from Girish Moodalbail. 4) Fix initial IGMP sysctl setting regression, from Nikolay Borisov. 5) Once a UFO fragmented frame is treated as UFO, we should continue doing so. Likewise once a frame has been segmented, we should continue doing that and not try to convert it to a UFO frame. From Willem de Bruijn. 6) Test the AF_PACKET RX/TX ring pg_vec state under the socket lock to prevent races. From Willem de Bruijn. * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: packet: fix tp_reserve race in packet_set_ring udp: consistently apply ufo or fragmentation net: sched: set xt_tgchk_param par.nft_compat as 0 in ipt_init_target igmp: Fix regression caused by igmp sysctl namespace code. geneve: maximum value of VNI cannot be used net: systemport: Fix software statistics for SYSTEMPORT Lite tipc: remove premature ESTABLISH FSM event at link synchronization
2017-08-10packet: fix tp_reserve race in packet_set_ringWillem de Bruijn1-4/+9
Updates to tp_reserve can race with reads of the field in packet_set_ring. Avoid this by holding the socket lock during updates in setsockopt PACKET_RESERVE. This bug was discovered by syzkaller. Fixes: 8913336a7e8d ("packet: add PACKET_RESERVE sockopt") Reported-by: Andrey Konovalov <andreyknvl@google.com> Signed-off-by: Willem de Bruijn <willemb@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-10udp: consistently apply ufo or fragmentationWillem de Bruijn3-7/+10
When iteratively building a UDP datagram with MSG_MORE and that datagram exceeds MTU, consistently choose UFO or fragmentation. Once skb_is_gso, always apply ufo. Conversely, once a datagram is split across multiple skbs, do not consider ufo. Sendpage already maintains the first invariant, only add the second. IPv6 does not have a sendpage implementation to modify. A gso skb must have a partial checksum, do not follow sk_no_check_tx in udp_send_skb. Found by syzkaller. Fixes: e89e9cf539a2 ("[IPv4/IPv6]: UFO Scatter-gather approach") Reported-by: Andrey Konovalov <andreyknvl@google.com> Signed-off-by: Willem de Bruijn <willemb@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-10Merge branch 'rtnetlink-fix-initial-rtnl-pushdown-fallout'David S. Miller3-9/+227
Florian Westphal says: ==================== rtnetlink: fix initial rtnl pushdown fallout This series fixes various bugs and splats reported since the allow-handler-to-run-with-no-rtnl series went in. Last patch adds a script that can be used to add further tests in case more bugs are reported. In case you prefer reverting the original series instead of fixing fallout I can resend this patch on its own. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-10selftests: add rtnetlink test scriptFlorian Westphal2-1/+200
add a simple script to exercise some rtnetlink call paths, so KASAN, lockdep etc. can yell at developer before patches are sent upstream. This can be extended to also cover bond, team, vrf and the like. Signed-off-by: Florian Westphal <fw@strlen.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-10rtnetlink: fallback to UNSPEC if current family has no doit callbackFlorian Westphal1-0/+6
We need to use PF_UNSPEC in case the requested family has no doit callback, otherwise this now fails with EOPNOTSUPP instead of running the unspec doit callback, as before. Fixes: 6853dd488119 ("rtnetlink: protect handler table with rcu") Signed-off-by: Florian Westphal <fw@strlen.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-10rtnetlink: init handler refcounts to 1Florian Westphal1-1/+6
If using CONFIG_REFCOUNT_FULL=y we get following splat: refcount_t: increment on 0; use-after-free. WARNING: CPU: 0 PID: 304 at lib/refcount.c:152 refcount_inc+0x47/0x50 Call Trace: rtnetlink_rcv_msg+0x191/0x260 ... This warning is harmless (0 is "no callback running", not "memory was freed"). Use '1' as the new 'no handler is running' base instead of 0 to avoid this. Fixes: 019a316992ee ("rtnetlink: add reference counting to prevent module unload while dump is in progress") Reported-by: Sabrina Dubroca <sdubroca@redhat.com> Reported-by: kernel test robot <fengguang.wu@intel.com> Signed-off-by: Florian Westphal <fw@strlen.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-10rtnetlink: switch rtnl_link_get_slave_info_data_size to rcuFlorian Westphal1-4/+12
David Ahern reports following splat: RTNL: assertion failed at net/core/dev.c (5717) netdev_master_upper_dev_get+0x5f/0x70 if_nlmsg_size+0x158/0x240 rtnl_calcit.isra.26+0xa3/0xf0 rtnl_link_get_slave_info_data_size currently assumes RTNL protection, but there appears to be no hard requirement for this, so use rcu instead. At the time of this writing, there are three 'get_slave_size' callbacks (now invoked under rcu): bond_get_slave_size, vrf_get_slave_size and br_port_get_slave_size, all return constant only (i.e. they don't sleep). Fixes: 6853dd488119 ("rtnetlink: protect handler table with rcu") Reported-by: David Ahern <dsahern@gmail.com> Signed-off-by: Florian Westphal <fw@strlen.de> Acked-by: David Ahern <dsahern@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-10rtnetlink: do not use RTM_GETLINK directlyFlorian Westphal1-2/+2
Userspace sends RTM_GETLINK type, but the kernel substracts RTM_BASE from this, i.e. 'type' doesn't contain RTM_GETLINK anymore but instead RTM_GETLINK - RTM_BASE. This caused the calcit callback to not be invoked when it should have been (and vice versa). While at it, also fix a off-by one when checking family index. vs handler array size. Fixes: e1fa6d216dd ("rtnetlink: call rtnl_calcit directly") Signed-off-by: Florian Westphal <fw@strlen.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-10rtnetlink: use rcu_dereference_raw to silence rcu splatFlorian Westphal1-1/+1
Ido reports a rcu splat in __rtnl_register. The splat is correct; as rtnl_register doesn't grab any logs and doesn't use rcu locks either. It has always been like this. handler families are not registered in parallel so there are no races wrt. the kmalloc ordering. The only reason to use rcu_dereference in the first place was to avoid sparse from complaining about this. Thus this switches to _raw() to not have rcu checks here. The alternative is to add rtnl locking to register/unregister, however, I don't see a compelling reason to do so as this has been lockless for the past twenty years or so. Fixes: 6853dd4881 ("rtnetlink: protect handler table with rcu") Reported-by: Ido Schimmel <idosch@idosch.org> Signed-off-by: Florian Westphal <fw@strlen.de> Tested-by: Ido Schimmel <idosch@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-10Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparcLinus Torvalds7-11/+124
Pull sparc updates from David Miller: 1) Recognize M8 cpus, just basic chip ID matching, from Allen Pais. 2) Prevent crashes when bringing up sunvdc virtual block devices in some environments. From Jim Quigley. * git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc: sunvdc: prevent sunvdc panic when mpgroup disk added to guest domain sparc64: Increase max_phys_bits to 51 and VA bits to 53 for M8. sparc64: recognize and support sparc M8 cpu type sparc64: properly name the cpu constants