- 16 Jun, 2015 21 commits
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Alexei Starovoitov authored
Accessing current->pid/uid from cls_bpf may lead to misleading results and should not be used when TC classifiers need accurate information about pid/uid. Signed-off-by:
Alexei Starovoitov <ast@plumgrid.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Edward Cree authored
Without this change, modprobe -r sfc hits the BUG_ON() in efx_pci_remove_main(). Fixes: e7fef9b4 ("sfc: add sysfs entry to control MCDI tracing") Reported-by:
Jarod Wilson <jarod@redhat.com> Reviewed-by:
Edward Cree <ecree@solarflare.com> Signed-off-by:
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David S. Miller authored
Craig Gallek says: ==================== Socket destruction events via netlink sock_diag This series extends the netlink sock_diag interface to broadcast socket information as they are being destroyed. The current interface is poll based and can not be used to retreive information about sockets that are destroyed between poll intervals. Only inet sockets are broadcast in this implementation, but other families could easily be added as needed in the future. If this patch set is accepted, a follow-up patch to the ss utility in the iproute2 suite will also be submitted. ==================== Signed-off-by: -
Craig Gallek authored
This get_info handler will simply dispatch to the appropriate existing inet protocol handler. This patch also includes a new netlink attribute (INET_DIAG_PROTOCOL). This attribute is currently only used for multicast messages. Without this attribute, there is no way of knowing the IP protocol used by the socket information being broadcast. This attribute is not necessary in the 'dump' variant of this protocol (though it could easily be added) because dump requests are issued for specific family/protocol pairs. Tested: ss -E (note, the -E option has not yet been merged into the upstream version of ss). Signed-off-by:
Craig Gallek <kraig@google.com> Acked-by:
Eric Dumazet <edumazet@google.com> Signed-off-by:
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Craig Gallek authored
Previously, there was no clear distinction between the inet protocols that used struct tcp_info to report information and those that didn't. This change adds a specific size attribute to the inet_diag_handler struct which defines these interfaces. This will make dispatching sock_diag get_info requests identical for all inet protocols in a following patch. Tested: ss -au Tested: ss -at Signed-off-by:
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Craig Gallek authored
These groups will contain socket-destruction events for AF_INET/AF_INET6, IPPROTO_TCP/IPPROTO_UDP. Near the end of socket destruction, a check for listeners is performed. In the presence of a listener, rather than completely cleanup the socket, a unit of work will be added to a private work queue which will first broadcast information about the socket and then finish the cleanup operation. Signed-off-by:
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David S. Miller authored
Or Gerlitz says: ==================== mlx4 driver update (+ new VF ndo) This series from Eran and Hadar is further dealing with traffic counters in the mlx4 driver, this time mostly around SRIOV. We added a new ndo to read the VF counters through the PF netdev netlink infrastructure plus mlx4 implementation for that ndo. changes from V0: - applied feedback from John to use nested netlink encoding for the VF counters so we can extend it later - add handling of single ported VFs in the mlx4_en driver new ndo - avoid chopping the FW counters from 64 to 32 bits in mlx4_en PF flow ==================== Signed-off-by: -
Eran Ben Elisha authored
Implement the ndo to gather VF statistics through the PF. All counters related to this VF are stored in a per slave list, run over the slave's list and collect all statistics. Signed-off-by:
Eran Ben Elisha <eranbe@mellanox.com> Signed-off-by:
Hadar Hen Zion <hadarh@mellanox.com> Signed-off-by:
Or Gerlitz <ogerlitz@mellanox.com> Signed-off-by:
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Eran Ben Elisha authored
Add ndo_get_vf_stats where the PF retrieves and fills the VFs traffic statistics. We encode the VF stats in a nested manner to allow for future extensions. Signed-off-by:
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Eran Ben Elisha authored
Allow the user to observe the PF own statistics using ethtool with pf_ prefixed counter names. Those counters are the PF statistics out of the overall port statistics. Every PF QP is attached to a counter and the summary of those counters is the PF statistics. Signed-off-by:
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Eran Ben Elisha authored
This is an infrastructure step for querying VF and PF counters. This code was in the IB driver, move it to the mlx4 core driver so it will be accessible for more use cases. Signed-off-by:
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Eran Ben Elisha authored
As IB VFs are not capable to read the port counters through MADs, move there to read their own QP counters to gather statistics. Signed-off-by:
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Eran Ben Elisha authored
This is an infrastructure step to attach all the QPs opened from the IB driver to a counter in order to collect VF stats from the PF using those counters. If the port's type is Ethernet, the counter policy demands two counters per port (one for RoCE and one for Ethernet). The port default counter (allocated in mlx4_core) is used for the Ethernet netdev QPs and we allocate another counter for RoCE. If the port's traffic is Infiniband, the counter policy demands one counter per port, so it can use the port's default counter. Also, Add 'allocated' flag for each counter in order to clean it at unload. Signed-off-by:
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Eran Ben Elisha authored
Default counter per port will be allocated at the mlx4 core driver load. Every QP opened by the Ethernet driver will be attached to the port's default counter. This is an infrastructure step to collect VF statistics from the PF. Signed-off-by:
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Eran Ben Elisha authored
Counter will get its port attribute within the resource tracker when the first QP attached to it is modified to RTR. If a QP is counter-less, an attempt to create a new counter with assigned port will be made. Signed-off-by:
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Eran Ben Elisha authored
Each physical function has a guarantee of two counters per port, one for a default counter and one for the IB driver. Each virtual function has a guarantee of one counter per port. All other counters are free and can be obtained on demand. This is a preparation step for supporting a get_vf_stats ndo call, so we can promise a counter for every VF in order to collect their statistics from the PF context. Signed-off-by:
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Eran Ben Elisha authored
Since virtual functions get their counters indices allocation from the PF, allocate counters indices bitmap only in case the function isn't virtual. Also, check that the device has counters to allocate before creating the indices bitmap table. Signed-off-by:
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Eran Ben Elisha authored
Reserve the last valid counter index for "sink" counter, when a new counter cannot be allocated, the driver will use this counter. In order to avoid allocating this counter on any other flow, fix the indices bitmap allocation range, and reserve the sink counter index. Add macro for the sink counter index and replace all appearences of the index with the macro. Signed-off-by:
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Eran Ben Elisha authored
Add resetting the counter data to the free counter flow, so the counter's data won't be accessible anymore if querying the counter. Also, on next counter allocation (to another VM for example), it will be fresh and clear. Signed-off-by:
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Eran Ben Elisha authored
If counters are not supported by the device. The indices bitmap table is not allocated during initialization. Add the symmetrical check before cleaning the counters bitmap table or freeing a counter. Signed-off-by:
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Scott Feldman authored
We need to delete from offload the device externally learnded fdbs when any one of these events happen: 1) Bridge ages out fdb. (When bridge is doing ageing vs. device doing ageing. If device is doing ageing, it would send SWITCHDEV_FDB_DEL directly). 2) STP state change flushes fdbs on port. 3) User uses sysfs interface to flush fdbs from bridge or bridge port: echo 1 >/sys/class/net/BR_DEV/bridge/flush echo 1 >/sys/class/net/BR_PORT/brport/flush 4) Offload driver send event SWITCHDEV_FDB_DEL to delete fdb entry. For rocker, we can now get called to delete fdb entry in wait and nowait contexts, so set NOWAIT flag when deleting fdb entry. Signed-off-by:
Scott Feldman <sfeldma@gmail.com> Signed-off-by:
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- 15 Jun, 2015 19 commits
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git://git.kernel.org/pub/scm/linux/kernel/git/sameo/nfc-nextDavid S. Miller authored
Samuel Ortiz says: ==================== NFC 4.2 pull request This is the NFC pull request for 4.2. - NCI drivers can now define their own handlers for processing proprietary NCI responses and notifications. - NFC vendors can use a dedicated netlink API to send their own proprietary commands, like e.g. all commands needed to implement vendor specific manufacturing tools. - A new generic NCI over UART driver against which any NCI chipset running on top of a serial interface can register. - The st21nfcb driver is renamed to st-nci as it can and will support most of ST Microelectronics NCI chipsets. - The st21nfcb driver can put its CLF in hibernate mode and save significant amount of power. - A few st21nfcb minor fixes. - The NXP NCI driver now supports ACPI enumeration. - The Marvell NCI driver now supports both USB and serial physical interfaces. - The Marvell NCI drivers also supports NCI frames being muxed over HCI. This is a setting that can be defined by a DT property. ==================== Signed-off-by: -
David S. Miller authored
Nikolay Aleksandrov says: ==================== bonding: extend the 3ad exported attributes These are two small patches that export actor_oper_port_state and partner_oper_port_state via netlink and sysfs, until now they were only exported via bond's proc entry. If this set gets accepted I have an iproute2 patch prepared that will export them with which I tested these changes. ==================== Signed-off-by: -
Nikolay Aleksandrov authored
Export the partner_oper_port_state of each port via sysfs and netlink. In 802.3ad mode it is valuable for the user to be able to check the partner_oper state, it is already exported via bond's proc entry. Signed-off-by:
Nikolay Aleksandrov <razor@blackwall.org> Signed-off-by:
Andy Gospodarek <gospo@cumulusnetworks.com> Signed-off-by:
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Nikolay Aleksandrov authored
Export the actor_oper_port_state of each port via sysfs and netlink. In 802.3ad mode it is valuable for the user to be able to check the actor_oper state, it is already exported via bond's proc entry. Signed-off-by:
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David S. Miller authored
Scott Feldman says: ==================== rocker: revert back to support for nowait processes One of the items removed from the rocker driver in the Spring Cleanup patch series was the ability to mark processing in the driver as "no wait" for those contexts where we cannot sleep. Turns out, we have "no wait" contexts where we want to program the device and we don't want to defer the processing to a process context. So re-add the ROCKER_OP_FLAG_NOWAIT flag to mark such processes, and propagate flags to mem allocator and to the device cmd executor. With NOWAIT, mem allocs are GFP_ATOMIC and device cmds are queued to the device, but the driver will not wait (sleep) for the response back from the device. My bad for removing NOWAIT support in the first place; I thought we could swing non-sleep contexts to process context using a work queue, for example, but there is push-back to keep processing in original context. ==================== Signed-off-by: -
Scott Feldman authored
rocker_port_stop can be called from atomic and non-atomic contexts. Since we can't test what context we're getting called in, do the processing as 'no wait', which will cover all cases. Signed-off-by:
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Scott Feldman authored
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Scott Feldman authored
We can get STP updates from the bridge driver in atomic and non-atomic contexts. Since we can't test what context we're getting called in, do the STP processing as 'no wait', which will cover all cases. Signed-off-by:
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Scott Feldman authored
Neigh update event handler runs in a context where we can't sleep, so mark processing in driver with ROCKER_OP_FLAG_NOWAIT. NOWAIT will use GFP_ATOMIC for allocations and will queue cmds to the device's cmd ring but will not wait (sleep) for cmd response back from device. Signed-off-by:
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Scott Feldman authored
One of the items removed from the rocker driver in the Spring Cleanup patch series was the ability to mark processing in the driver as "no wait" for those contexts where we cannot sleep. Turns out, we have "no wait" contexts where we want to program the device. So re-add the ROCKER_OP_FLAG_NOWAIT flag to mark such processes, and propagate flags to mem allocator and to the device cmd executor. With NOWAIT, mem allocs are GFP_ATOMIC and device cmds are queued to the device, but the driver will not wait (sleep) for the response back from the device. My bad for removing NOWAIT support in the first place; I thought we could swing non-sleep contexts to process context using a work queue, for example, but there is push-back to keep processing in original context. Signed-off-by:
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Scott Feldman authored
rocker->neigh_tbl_next_index is used to generate unique indices for neigh entries programmed into the device. The way new indices were generated was racy with the new prepare-commit transaction model. A simple fix here removes the race. The race was with two processes getting the same index, one process using prepare-commit, the other not: Proc A Proc B PREPARE phase get neigh_tbl_next_index NONE phase get neigh_tbl_next_index neigh_tbl_next_index++ COMMIT phase neigh_tbl_next_index++ Both A and B got the same index. The fix is to store and increment neigh_tbl_next_index in the PREPARE (or NONE) phase and use value in COMMIT phase: Proc A Proc B PREPARE phase get neigh_tbl_next_index neigh_tbl_next_index++ NONE phase get neigh_tbl_next_index neigh_tbl_next_index++ COMMIT phase // use value stashed in PREPARE phase Reported-by:
Simon Horman <simon.horman@netronome.com> Signed-off-by:
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Scott Feldman authored
The ports array is filled in as ports are probed, but if probing doesn't finish, we need to stop only those ports that where probed successfully. Check the ports array for NULL to skip un-probed ports when stopping. Signed-off-by:
Jiri Pirko <jiri@resnulli.us> Signed-off-by:
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Eric Dumazet authored
Using a function instead of a macro is cleaner and remove following W=1 warnings (extract) In file included from net/ipv6/ip6_vti.c:29:0: net/ipv6/ip6_vti.c: In function ‘vti6_dev_init_gen’: include/linux/netdevice.h:2029:18: warning: variable ‘stat’ set but not used [-Wunused-but-set-variable] typeof(type) *stat; \ ^ net/ipv6/ip6_vti.c:862:16: note: in expansion of macro ‘netdev_alloc_pcpu_stats’ dev->tstats = netdev_alloc_pcpu_stats(struct pcpu_sw_netstats); ^ CC [M] net/ipv6/sit.o In file included from net/ipv6/sit.c:30:0: net/ipv6/sit.c: In function ‘ipip6_tunnel_init’: include/linux/netdevice.h:2029:18: warning: variable ‘stat’ set but not used [-Wunused-but-set-variable] typeof(type) *stat; \ ^ Signed-off-by: -
Scott Feldman authored
v2: Move struct switchdev_obj automatics to inner scope where there used. v1: To maintain backward compatibility with the existing iproute2 "bridge vlan" command, let bridge's setlink/dellink handler call into either the port driver's 8021q ndo ops or the port driver's bridge_setlink/dellink ops. This allows port driver to choose 8021q ops or the newer bridge_setlink/dellink ops when implementing VLAN add/del filtering on the device. The iproute "bridge vlan" command does not need to be modified. To summarize using the "bridge vlan" command examples, we have: 1) bridge vlan add|del vid VID dev DEV Here iproute2 sets MASTER flag. Bridge's bridge_setlink/dellink is called. Vlan is set on bridge for port. If port driver implements ndo 8021q ops, call those to port driver can install vlan filter on device. Otherwise, if port driver implements bridge_setlink/dellink ops, call those to install vlan filter to device. This option only works if port is bridged. 2) bridge vlan add|del vid VID dev DEV master Same as 1) 3) bridge vlan add|del vid VID dev DEV self Bridge's bridge_setlink/dellink isn't called. Port driver's bridge_setlink/dellink is called, if implemented. This option works if port is bridged or not. If port is not bridged, a VLAN can still be added/deleted to device filter using this variant. 4) bridge vlan add|del vid VID dev DEV master self This is a combination of 1) and 3), but will only work if port is bridged. Signed-off-by:
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David S. Miller authored
Alexei Starovoitov says: ==================== v1->v2: switched to init_user_ns from current_user_ns as suggested by Andy Introduce new helpers to access 'struct task_struct'->pid, tgid, uid, gid, comm fields in tracing and networking. Share bpf_trace_printk() and bpf_get_smp_processor_id() helpers between tracing and networking. ==================== Signed-off-by: -
Alexei Starovoitov authored
It's useful to do per-cpu histograms. Suggested-by:
Daniel Wagner <daniel.wagner@bmw-carit.de> Signed-off-by:
Daniel Borkmann <daniel@iogearbox.net> Signed-off-by:
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Alexei Starovoitov authored
bpf_trace_printk() is a helper function used to debug eBPF programs. Let socket and TC programs use it as well. Note, it's DEBUG ONLY helper. If it's used in the program, the kernel will print warning banner to make sure users don't use it in production. Signed-off-by:
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Alexei Starovoitov authored
eBPF programs attached to kprobes need to filter based on current->pid, uid and other fields, so introduce helper functions: u64 bpf_get_current_pid_tgid(void) Return: current->tgid << 32 | current->pid u64 bpf_get_current_uid_gid(void) Return: current_gid << 32 | current_uid bpf_get_current_comm(char *buf, int size_of_buf) stores current->comm into buf They can be used from the programs attached to TC as well to classify packets based on current task fields. Update tracex2 example to print histogram of write syscalls for each process instead of aggregated for all. 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 This a bit large (and late) patchset that contains Netfilter updates for net-next. Most relevantly br_netfilter fixes, ipset RCU support, removal of x_tables percpu ruleset copy and rework of the nf_tables netdev support. More specifically, they are: 1) Warn the user when there is a better protocol conntracker available, from Marcelo Ricardo Leitner. 2) Fix forwarding of IPv6 fragmented traffic in br_netfilter, from Bernhard Thaler. This comes with several patches to prepare the change in first place. 3) Get rid of special mtu handling of PPPoE/VLAN frames for br_netfilter. This is not needed anymore since now we use the largest fragment size to refragment, from Florian Westphal. 4) Restore vlan tag when refragmenting in br_netfilter, also from Florian. 5) Get rid of the percpu ruleset copy in x_tables, from Florian. Plus another follow up patch to refine it from Eric Dumazet. 6) Several ipset cleanups, fixes and finally RCU support, from Jozsef Kadlecsik. 7) Get rid of parens in Netfilter Kconfig files. 8) Attach the net_device to the basechain as opposed to the initial per table approach in the nf_tables netdev family. 9) Subscribe to netdev events to detect the removal and registration of a device that is referenced by a basechain. ==================== Signed-off-by:
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