- 14 Jun, 2017 22 commits
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David Howells authored
Cache the congestion window setting that was determined during a call's transmission phase when it finishes so that it can be used by the next call to the same peer, thereby shortcutting the slow-start algorithm. The value is stored in the rxrpc_peer struct and is accessed without locking. Each call takes the value that happens to be there when it starts and just overwrites the value when it finishes. Signed-off-by:
David Howells <dhowells@redhat.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Weilin Chang authored
Signed-off-by:
Weilin Chang <weilin.chang@cavium.com> Signed-off-by:
Derek Chickles <derek.chickles@cavium.com> Signed-off-by:
Felix Manlunas <felix.manlunas@cavium.com> Signed-off-by:
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Dan Carpenter authored
If we hit this error path we end up returning ERR_PTR(0) which is NULL. The caller is not expecting that so it results in a NULL dereference. Fixes: 410ed13c ("Add the mlxfw module for Mellanox firmware flash process") Signed-off-by:
Dan Carpenter <dan.carpenter@oracle.com> Acked-by:
Yotam Gigi <yotamg@mellanox.com> Signed-off-by:
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Paolo Abeni authored
The commit 83ada39bb79d ("net: factor out a helper to decrement the skb refcount") provided and used a helper for decrementing skb usage, but I missed at least a spot for it. This change remove some more duplicated code reusing skb_unref() in napi_consume_skb(), too. The helper uses an additional, unneeded unlikely(!skb) test - napi_consume_skb() already check it a few lines above - but the compiler is smart enough to optimize the duplicated test out. Signed-off-by:Paolo Abeni <pabeni@redhat.com> 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 2017-06-14 Here's another batch of Bluetooth patches for the 4.13 kernel: - Fix for Broadcom controllers not supporting Event Mask Page 2 - New QCA ROME USB ID for btusb - Fix for Security Manager Protocol to use constant-time memcmp - Improved support for TI WiLink chips Please let me know if there are any issues pulling. Thanks. ==================== Signed-off-by:
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Dan Carpenter authored
The p_l2_info->pp_qid_usage[] array has "p_l2_info->queues" elements so the > here should be a >= or we write beyond the end of the array. Fixes: bbe3f233 ("qed: Assign a unique per-queue index to queue-cid") Signed-off-by:
Yuval Mintz <Yuval.Mintz@cavium.com> Signed-off-by:
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David S. Miller authored
Jiri Pirko says: ==================== mlxsw: Add support for cable info access Add support for cable info access via ethtool. This is done by accessing the SFP+/QSFP internal EEPROM. ==================== Signed-off-by: -
Arkadi Sharshevsky authored
Add support for access cable info via ethtool. Signed-off-by:
Arkadi Sharshevsky <arkadis@mellanox.com> Signed-off-by:
Jiri Pirko <jiri@mellanox.com> Signed-off-by:
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Arkadi Sharshevsky authored
The MCIA register is used to access the SFP+ and QSFP connector's EPROM. It will be used to query the cable info. Signed-off-by:
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David S. Miller authored
David Daney says: ==================== bpf: Changes needed (or desired) for MIPS support This is a grab bag of changes to the bpf testing infrastructure I developed working on MIPS eBPF JIT support. The change to bpf_jit_disasm is probably universally beneficial, the others are more MIPS specific. ==================== Signed-off-by: -
David Daney authored
There are two problems: 1) In MIPS the __NR_* macros expand to an expression, this causes the sections of the object file to be named like: . . . [ 5] kprobe/(5000 + 1) PROGBITS 0000000000000000 000160 ... [ 6] kprobe/(5000 + 0) PROGBITS 0000000000000000 000258 ... [ 7] kprobe/(5000 + 9) PROGBITS 0000000000000000 000348 ... . . . The fix here is to use the "asm_offsets" trick to evaluate the macros in the C compiler and generate a header file with a usable form of the macros. 2) MIPS syscall numbers start at 5000, so we need a bigger map to hold the sub-programs. Signed-off-by:
David Daney <david.daney@cavium.com> Acked-by:
Daniel Borkmann <daniel@iogearbox.net> Signed-off-by:
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David Daney authored
Signed-off-by:
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David Daney authored
On MIPS, conditional branches can only span 32k instructions. To exceed this limit in the JIT with the BPF maximum of 4k insns, we need to choose eBPF insns that expand to more than 8 machine instructions. Use BPF_LD_ABS as it is quite complex. This forces the JIT to invert the sense of the branch to branch around a long jump to the end. This (somewhat) verifies that the branch inversion logic and target address calculation of the long jumps are done correctly. Signed-off-by:
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David Daney authored
Dynamically allocate memory so that JIT images larger than the size of the statically allocated array can be handled. Signed-off-by:
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David S. Miller authored
Yonghong Song says: ==================== bpf: permit bpf program narrower loads for ctx fields Today, if users try to access a ctx field through a narrower load, e.g., __be16 prot = __sk_buff->protocol, verifier will fail. This set contains the verifier change to permit such loads for certain ctx fields as well as the new test cases in selftests/bpf. ==================== Signed-off-by: -
Yonghong Song authored
Add test cases in test_verifier and test_progs. Negative tests are added in test_verifier as well. The test in test_progs will compare the value of narrower ctx field load result vs. the masked value of normal full-field load result, and will fail if they are not the same. Acked-by:
Yonghong Song <yhs@fb.com> Signed-off-by:
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Yonghong Song authored
Currently, verifier will reject a program if it contains an narrower load from the bpf context structure. For example, __u8 h = __sk_buff->hash, or __u16 p = __sk_buff->protocol __u32 sample_period = bpf_perf_event_data->sample_period which are narrower loads of 4-byte or 8-byte field. This patch solves the issue by: . Introduce a new parameter ctx_field_size to carry the field size of narrower load from prog type specific *__is_valid_access validator back to verifier. . The non-zero ctx_field_size for a memory access indicates (1). underlying prog type specific convert_ctx_accesses supporting non-whole-field access (2). the current insn is a narrower or whole field access. . In verifier, for such loads where load memory size is less than ctx_field_size, verifier transforms it to a full field load followed by proper masking. . Currently, __sk_buff and bpf_perf_event_data->sample_period are supporting narrowing loads. . Narrower stores are still not allowed as typical ctx stores are just normal stores. Because of this change, some tests in verifier will fail and these tests are removed. As a bonus, rename some out of bound __sk_buff->cb access to proper field name and remove two redundant "skb cb oob" tests. Acked-by: -
Zhang Shengju authored
The macvlan dev should propagate the return value of mac address change for lower device in the passthru mode, instead of always return 0. Signed-off-by:
Zhang Shengju <zhangshengju@cmss.chinamobile.com> Signed-off-by:
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git://git.kernel.org/pub/scm/linux/kernel/git/jkirsher/next-queueDavid S. Miller authored
Jeff Kirsher says: ==================== 10GbE Intel Wired LAN Driver Updates 2017-06-13 This series contains updates to ixgbe and ixgbevf only. Jake completes his fix ups for our drivers with the ixgbe changes to resolve a race condition in processing timestamp requests. These fixes are the same fixes Jake applied earlier to the other drivers, including the added statistic to help administrators know when an application timestamp request is ignored. With all the recent ixgbe/ixgbevf changes and fixes, Tony bumps the the driver versions. Then Tony provides a fix to resolve a static analysis warning by changing a variable to unsigned integer since the value can never be negative. Emil fixes an issue for X550 devices where the qde parameter was being ignored, so PFQDE.HIDE_VLAN was not being set. Jeff Mahoney from SuSE fixes a possible kernel crash, where there was a small window where tasks writing to the sriov_numvfs sysfs attribute can sneak in after we call register_netdev(). So we need to call pci_set_drvdata() before and not after register_netdev() to preserve the intent of commit 0fb6a55c ("ixgbe: fix crash on rmmod after probe fail"). ==================== Signed-off-by:
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Shih-Yuan Lee (FourDollars) authored
T: Bus=01 Lev=01 Prnt=01 Port=06 Cnt=03 Dev#= 3 Spd=12 MxCh= 0 D: Ver= 1.10 Cls=e0(wlcon) Sub=01 Prot=01 MxPS=64 #Cfgs= 1 P: Vendor=0489 ProdID=e0a2 Rev=00.01 C: #Ifs= 2 Cfg#= 1 Atr=e0 MxPwr=100mA I: If#= 0 Alt= 0 #EPs= 3 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb I: If#= 1 Alt= 0 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb Signed-off-by:
Shih-Yuan Lee (FourDollars) <sylee@canonical.com> Suggested-by:
Owen Lin <olin@rivetnetworks.com> Signed-off-by:
Marcel Holtmann <marcel@holtmann.org>
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Jeff Mahoney authored
We call pci_set_drvdata immediately after calling register_netdev, which leaves a window where tasks writing to the sriov_numvfs sysfs attribute can sneak in and crash the kernel. register_netdev cleans up after itself so placing pci_set_drvdata immediately before it should preserve the intent of commit 0fb6a55c ("ixgbe: fix crash on rmmod after probe fail"). Fixes: 0fb6a55c ("ixgbe: fix crash on rmmod after probe fail") Signed-off-by:
Jeff Mahoney <jeffm@suse.com> Tested-by:
Andrew Bowers <andrewx.bowers@intel.com> Signed-off-by:
Jeff Kirsher <jeffrey.t.kirsher@intel.com>
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Tony Nguyen authored
cppcheck warns that the format string is incorrect in the function ixgbe_get_strings(). Since the value cannot be negative, change the variable to unsigned which matches the format specifier. Signed-off-by:
Tony Nguyen <anthony.l.nguyen@intel.com> Tested-by:
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- 13 Jun, 2017 18 commits
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Emil Tantilov authored
ixgbe_write_qde() was ignoring the qde parameter which resulted in PFQDE.HIDE_VLAN not being set for X550. Signed-off-by:
Emil Tantilov <emil.s.tantilov@intel.com> Tested-by:
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Tony Nguyen authored
Update ixgbevf version number. Signed-off-by:
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Tony Nguyen authored
Update ixgbe version number. Signed-off-by:
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Jacob Keller authored
The ixgbe driver has logic to handle only one Tx timestamp at a time, using a state bit lock to avoid multiple requests at once. It may be possible, if incredibly unlikely, that a Tx timestamp event is requested but never completes. Since we use an interrupt scheme to determine when the Tx timestamp occurred we would never clear the state bit in this case. Add an ixgbe_ptp_tx_hang() function similar to the already existing ixgbe_ptp_rx_hang() function. This function runs in the watchdog routine and makes sure we eventually recover from this case instead of permanently disabling Tx timestamps. Note: there is no currently known way to cause this without hacking the driver code to force it. Signed-off-by:
Jacob Keller <jacob.e.keller@intel.com> Tested-by:
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Jacob Keller authored
The ixgbe driver can only handle one Tx timestamp request at a time. This means it is possible for an application timestamp request to be ignored. There is no easy way for an administrator to determine if this occurred. Add a new statistic which tracks this, tx_hwtstamp_skipped. Signed-off-by:
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Jacob Keller authored
The ixgbe driver uses a state bit lock to avoid handling more than one Tx timestamp request at once. This is required because hardware is limited to a single set of registers for Tx timestamps. The state bit lock is not properly cleaned up during ixgbe_xmit_frame_ring() if the transmit fails such as due to DMA or TSO failure. In some hardware this results in blocking timestamps until the service task times out. In other hardware this results in a permanent lock of the timestamp bit because we never receive an interrupt indicating the timestamp occurred, since indeed the packet was never transmitted. Fix this by checking for DMA and TSO errors in ixgbe_xmit_frame_ring() and properly cleaning up after ourselves when these occur. Reported-by:
Reported-by: David Mirabito <davidm@metamako.com> Signed-off-by:
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Jacob Keller authored
Hardware related to the ixgbe driver is limited to handling a single Tx timestamp request at a time. Thus, the driver ignores requests for Tx timestamp while waiting for the current request to finish. It uses a state bit lock which enforces that only one timestamp request is honored at a time. Unfortunately this suffers from a simple race condition. The bit lock is not cleared until after skb_tstamp_tx() is called notifying applications of a new Tx timestamp. Even a well behaved application sending only one packet at a time and waiting for a response can wake up and send a new packet before the bit lock is cleared. This results in needlessly dropping some Tx timestamp requests. We can fix this by unlocking the state bit as soon as we read the Timestamp register, as this is the first point at which it is safe to unlock. To avoid issues with the skb pointer, we'll use a copy of the pointer and set the global variable in the driver structure to NULL first. This ensures that the next timestamp request does not modify our local copy of the skb pointer. This ensures that well behaved applications do not accidentally race with the unlock bit. Obviously an application which sends multiple Tx timestamp requests at once will still only timestamp one packet at a time. Unfortunately there is nothing we can do about this. Reported-by:
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David S. Miller authored
Florian Fainelli says: ==================== net: dsa: Multi-CPU ground work (v4) This patch series prepares the ground for adding mutliple CPU port support to DSA, and starts by removing redundant pieces of information such as master_netdev which is cpu_dp->ethernet. Finally drivers are moved away from directly accessing ds->dst->cpu_dp and use appropriate helper functions. Note that if you have Device Tree blobs/platform configurations that are currently listing multiple CPU ports, the proposed behavior in dsa_ds_get_cpu_dp() will be to return the last bit set in ds->cpu_port_mask. Future plans include: - making dst->cpu_dp a flexible data structure (array, list, you name it) - having the ability for drivers to return a default/preferred CPU port (if necessary) Changes in v4: - fixed build warning with NETPOLL enabled Changes in v3: - removed the last patch since it causes problems with bcm_sf2/b53 in a dual-CPU case (root cause known, proper fix underway) - removed dsa_ds_get_cpu_dp() Changes in v2: - added Reviewed-by tags - assign port->cpu_dp earlier before ops->setup() has run ==================== Signed-off-by: -
Florian Fainelli authored
Introduce a helper function which will return a reference to the CPU port used in a dsa_switch_tree. Right now this is a singleton, but this will change once we introduce multi-CPU port support, so ease the transition by converting the affected code paths. Reviewed-by:
Vivien Didelot <vivien.didelot@savoirfairelinux.com> Signed-off-by:
Florian Fainelli <f.fainelli@gmail.com> Signed-off-by:
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Florian Fainelli authored
In preparation for supporting multiple CPU ports with DSA, have the dsa_port structure know which CPU it is associated with. This will be important in order to make sure the correct CPU is used for transmission of the frames. If not for functional reasons, for performance (e.g: load balancing) and forwarding decisions. Reviewed-by:
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Florian Fainelli authored
Relocate master_ethtool_ops and master_orig_ethtool_ops into struct dsa_port in order to be both consistent, and make things self contained within the dsa_port structure. This is a preliminary change to supporting multiple CPU port interfaces. Reviewed-by:
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Florian Fainelli authored
In preparation for supporting multiple CPU ports, remove dst->master_netdev and ds->master_netdev and replace them with only one instance of the common object we have for a port: struct dsa_port::netdev. ds->master_netdev is currently write only and would be helpful in the case where we have two switches, both with CPU ports, and also connected within each other, which the multi-CPU port patch series would address. While at it, introduce a helper function used in net/dsa/slave.c to immediately get a reference on the master network device called dsa_master_netdev(). Reviewed-by:
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Ganesh Goudar authored
If SF bit is not cleared in PL_INT_CAUSE, subsequent non-data interrupts are not raised. Enable SF bit in Global Interrupt Mask and handle it as non-fatal and hence eventually clear it. Signed-off-by:
Rahul Lakkireddy <rahul.lakkireddy@chelsio.com> Signed-off-by:
Ganesh Goudar <ganeshgr@chelsio.com> Signed-off-by:
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Jon Mason authored
The of_mdio_parse_addr() helper function is useful to other code, but the module dependency chain causes issues. To work around this, we can move of_mdio_parse_addr() to be an inline function in the header file. This gets rid of the dependencies and still allows for the reuse of code. Reported-by:
Liviu Dudau <liviu@dudau.co.uk> Signed-off-by:
Jon Mason <jon.mason@broadcom.com> Fixes: 342fa196 ("mdio: mux: make child bus walking more permissive and errors more verbose") Reviewed-by:
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Jesper Dangaard Brouer authored
The selftests depend on using the shell exit code as a mean of detecting the success or failure of test-binary executed. The appropiate output "[PASS]" or "[FAIL]" in generated by tools/testing/selftests/lib.mk. Notice that the exit code is masked with 255. Thus, be careful if using the number of errors as the exit code, as 256 errors would be seen as a success. There are two standard defined exit(3) codes: /usr/include/stdlib.h #define EXIT_FAILURE 1 /* Failing exit status. */ #define EXIT_SUCCESS 0 /* Successful exit status. */ Fix test_verifier.c to not use the negative value of variable "results", but instead return EXIT_FAILURE. Fix test_align.c and test_progs.c to actually use exit codes, before they were always indicating success regardless of results. Signed-off-by:
Jesper Dangaard Brouer <brouer@redhat.com> Acked-by:
Fengguang Wu <fengguang.wu@intel.com> Signed-off-by:
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Zhang Shengju authored
Remove unnecessary setting of flag IFF_BROADCAST, since ether_setup already does this. Signed-off-by:
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Johannes Berg authored
Use the recently introduced helper to replace the pattern of skb_put() && memset(), this transformation was done with the following spatch: @@ identifier p; expression len; expression skb; @@ -p = skb_put(skb, len); -memset(p, 0, len); +p = skb_put_zero(skb, len); Signed-off-by:
Johannes Berg <johannes.berg@intel.com> Signed-off-by:
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David S. Miller authored
Merge tag 'mac80211-next-for-davem-2017-06-13' of git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211-next Johannes Berg says: ==================== A couple of weeks worth of updates - looks like things are quiet: * merged net-next back to get a patch from net that another patch here depends on * various small improvements/cleanups across the board * 4-way handshake offload (many thanks to Arend for shepherding that) * mesh CSA/DFS support in mac80211 * the skb_put_zero() we discussed previously ==================== Signed-off-by:
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