- 16 Jul, 2014 8 commits
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Edward Cree authored
Added a counter rx_noskb_drop for failure to allocate an skb. Summed the per-channel rx_nodesc_trunc counters earlier so that they can be included in rx_dropped. Signed-off-by:
Edward Cree <ecree@solarflare.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Christoph Schulz authored
If using a demand-dialled PPP unit for a PPP multilink master, the pppd daemon needs to reset the sequence counter between two connections. This allows the daemon to reuse the PPP unit instead of destroying and recreating it. As there is no API to reset the counter, this patch resets the counter whenever the SC_MULTILINK flag is set. Signed-off-by:
Christoph Schulz <develop@kristov.de> Signed-off-by:
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David S. Miller authored
Eric Dumazet says: ==================== bonding: rcu cleanups RCU was added to bonding in linux-3.12 but lacked proper sparse annotations. Using __rcu annotation actually helps to spot all accesses to bond->curr_active_slave & cond->current_arp_slave are correctly protected, with full sparse & LOCKDEP support. Lets clean the code. ==================== Signed-off-by: -
Eric Dumazet authored
Using __rcu annotation actually helps to spot all accesses to bond->current_arp_slave are correctly protected, with LOCKDEP support. Signed-off-by:
Eric Dumazet <edumazet@google.com> Reviewed-by:
Nikolay Aleksandrov <nikolay@redhat.com> Signed-off-by:
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Eric Dumazet authored
RCU was added to bonding in linux-3.12 but lacked proper sparse annotations. Using __rcu annotation actually helps to spot all accesses to bond->curr_active_slave are correctly protected, with LOCKDEP support. Signed-off-by:
Veaceslav Falico <vfalico@gmail.com> Reviewed-by:
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Eric Dumazet authored
curr_active_slave is rcu protected, and bonding_show_mii_status() only wants to check if pointer is NULL or not. Signed-off-by:
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Eric Dumazet authored
Only keep bond_option_active_slave_get_rcu() helper. bond_fill_info() uses a new bond_option_active_slave_get_ifindex() helper. Signed-off-by:
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git://gitorious.org/linux-can/linux-can-nextDavid S. Miller authored
Marc Kleine-Budde says: ==================== pull-request: can-next 2014-07-15 this is a pull request of 4 patches for net-next/master. Prabhakar Lad contributes a patch that converts the c_can driver to use the devm api. The remaining four patches by Nikita Edward Baruzdin improve the SJA1000 driver with loopback testing support and introduce a new testing mode presume ack, for successful transmission even if no ACK is received. ==================== Signed-off-by:
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- 15 Jul, 2014 32 commits
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Willem de Bruijn authored
The SO_TIMESTAMPING API defines option SOF_TIMESTAMPING_SYS_HW. This feature is deprecated. It should not be implemented by new device drivers. Existing drivers do not implement it, either -- with one exception. Driver developers are encouraged to expose the NIC hw clock as a PTP HW clock source, instead, and synchronize system time to the HW source. The control flag cannot be removed due to being part of the ABI, nor can the structure scm_timestamping that is returned. Due to the one legacy driver, the internal datapath and structure are not removed. This patch only clearly marks the interface as deprecated. Device drivers should always return a syststamp value of zero. Signed-off-by:
Willem de Bruijn <willemb@google.com> ---- We can consider adding a WARN_ON_ONCE in__sock_recv_timestamp if non-zero syststamp is encountered Acked-by:
Richard Cochran <richardcochran@gmail.com> Signed-off-by:
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Willem de Bruijn authored
Add SO_TIMESTAMPING to sockets of type PF_INET[6]/SOCK_RAW: Add the necessary sock_tx_timestamp calls to the datapath for RAW sockets (ping sockets already had these calls). Fix the IP output path to pass the timestamp flags on the first fragment also for these sockets. The existing code relies on transhdrlen != 0 to indicate a first fragment. For these sockets, that assumption does not hold. This fixes http://bugzilla.kernel.org/show_bug.cgi?id=77221 Tested SOCK_RAW on IPv4 and IPv6, not PING. Signed-off-by:
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David S. Miller authored
Tom Lendacky says: ==================== amd-xgbe: Remove baseT workaround for fixed speeds The following series expands the speed/duplex settings array in phy.c to support additional media types. With this expansion the workaround in the amd-xgbe driver to set/remove baseT media types based on whether auto negotiation is enabled can be removed. This patch series is based on net-next. ==================== Signed-off-by: -
Lendacky, Thomas authored
With the addition of entries in the phy speed/duplex settings array to support KR and KX mode, the work-around to add/remove baseT settings to run at a fixed speed is no longer needed. Signed-off-by:
Tom Lendacky <thomas.lendacky@amd.com> Signed-off-by:
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Lendacky, Thomas authored
Expand the phy speed/duplex settings array to support more than just baseT features. This change adds entries to support the following additional speed/duplex/media types: SUPPORTED_10000baseKR_Full SUPPORTED_10000baseKX4_Full SUPPORTED_2500baseX_Full SUPPORTED_1000baseKX_Full Additionally, it changes the 10GbE baseT entry from using the hardcoded value 10000 to the SPEED_10000 define. Signed-off-by:
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David S. Miller authored
Fabian Frederick says: ==================== net: remove unnecessary break after goto/return Small patchset addressing break redundancy on net branch (suggested by Joe Perches). ==================== Signed-off-by: -
Fabian Frederick authored
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Fabian Frederick <fabf@skynet.be> Signed-off-by:
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Fabian Frederick authored
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Fabian Frederick authored
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Fabian Frederick authored
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Fabian Frederick authored
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Fabian Frederick authored
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Fabian Frederick authored
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Fabian Frederick authored
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Fabian Frederick authored
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Fabian Frederick authored
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Fabian Frederick authored
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Fabian Frederick authored
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Paul Moore <paul@paul-moore.com> Signed-off-by:
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Fabian Frederick authored
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Fabian Frederick authored
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Fabian Frederick authored
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Fabian Frederick authored
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David S. Miller authored
Hariprasad Shenai says: ==================== Misc. fixes for iw_cxgb4 This patch series adds support to determine ingress padding boundary at runtime. Advertise a larger max read queue depth for qps, and gather the resource limits from fw and use them to avoid exhausting all the resources and display TPTE on errors and add support for work request logging feature. The patches series is created against 'net-next' tree. And includes patches on cxgb4 and iw_cxgb4 driver. Since this patch-series contains changes which are dependent on commit id fc5ab020 ("cxgb4: Replaced the backdoor mechanism to access the HW memory with PCIe Window method") we would like to request this patch series to get merged via David Miller's 'net-next' tree. We have included all the maintainers of respective drivers. Kindly review the change and let us know in case of any review comments. V2: Optimized alloc_ird function, and several other changes related to debug prints based on review comments given by Yann Droneaud. ==================== Signed-off-by:
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Hariprasad Shenai authored
This commit enhances the iwarp driver to optionally keep a log of rdma work request timining data for kernel mode QPs. If iw_cxgb4 module option c4iw_wr_log is set to non-zero, each work request is tracked and timing data maintained in a rolling log that is 4096 entries deep by default. Module option c4iw_wr_log_size_order allows specifing a log2 size to use instead of the default order of 12 (4096 entries). Both module options are read-only and must be passed in at module load time to set them. IE: modprobe iw_cxgb4 c4iw_wr_log=1 c4iw_wr_log_size_order=10 The timing data is viewable via the iw_cxgb4 debugfs file "wr_log". Writing anything to this file will clear all the timing data. Data tracked includes: - The host time when the work request was posted, just before ringing the doorbell. The host time when the completion was polled by the application. This is also the time the log entry is created. The delta of these two times is the amount of time took processing the work request. - The qid of the EQ used to post the work request. - The work request opcode. - The cqe wr_id field. For sq completions requests this is the swsqe index. For recv completions this is the MSN of the ingress SEND. This value can be used to match log entries from this log with firmware flowc event entries. - The sge timestamp value just before ringing the doorbell when posting, the sge timestamp value just after polling the completion, and CQE.timestamp field from the completion itself. With these three timestamps we can track the latency from post to poll, and the amount of time the completion resided in the CQ before being reaped by the application. With debug firmware, the sge timestamp is also logged by firmware in its flowc history so that we can compute the latency from posting the work request until the firmware sees it. Signed-off-by:
Steve Wise <swise@opengridcomputing.com> Signed-off-by:
Hariprasad Shenai <hariprasad@chelsio.com> Signed-off-by:
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Hariprasad Shenai authored
With ingress WRITE or READ RESPONSE errors, HW provides the offending stag from the packet. This patch adds logic to log the parsed TPTE in this case. cxgb4 now exports a function to read a TPTE entry from adapter memory. Signed-off-by:
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Hariprasad Shenai authored
Advertise a larger max read queue depth for qps, and gather the resource limits from fw and use them to avoid exhaustinq all the resources. Design: cxgb4: Obtain the max_ordird_qp and max_ird_adapter device params from FW at init time and pass them up to the ULDs when they attach. If these parameters are not available, due to older firmware, then hard-code the values based on the known values for older firmware. iw_cxgb4: Fix the c4iw_query_device() to report these correct values based on adapter parameters. ibv_query_device() will always return: max_qp_rd_atom = max_qp_init_rd_atom = min(module_max, max_ordird_qp) max_res_rd_atom = max_ird_adapter Bump up the per qp max module option to 32, allowing it to be increased by the user up to the device max of max_ordird_qp. 32 seems to be sufficient to maximize throughput for streaming read benchmarks. Fail connection setup if the negotiated IRD exhausts the available adapter ird resources. So the driver will track the amount of ird resource in use and not send an RI_WR/INIT to FW that would reduce the available ird resources below zero. Signed-off-by:
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Hariprasad Shenai authored
Updates iw_cxgb4 to determine the Ingress Padding Boundary from cxgb4_lld_info, and take subsequent actions. Signed-off-by:
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Christoph Paasch authored
Since Yuchung's 9b44190d (tcp: refactor F-RTO), tcp_enter_cwr is always called with set_ssthresh = 1. Thus, we can remove this argument from tcp_enter_cwr. Further, as we remove this one, tcp_init_cwnd_reduction is then always called with set_ssthresh = true, and so we can get rid of this argument as well. Cc: Yuchung Cheng <ycheng@google.com> Signed-off-by:
Christoph Paasch <christoph.paasch@uclouvain.be> Acked-by:
Yuchung Cheng <ycheng@google.com> Signed-off-by:
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Tom Gundersen authored
This passes down NET_NAME_USER (or NET_NAME_ENUM) to alloc_netdev(), for any device created over rtnetlink. v9: restore reverse-christmas-tree order of local variables Signed-off-by:
Tom Gundersen <teg@jklm.no> Signed-off-by:
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Tom Gundersen authored
Extend alloc_netdev{,_mq{,s}}() to take name_assign_type as argument, and convert all users to pass NET_NAME_UNKNOWN. Coccinelle patch: @@ expression sizeof_priv, name, setup, txqs, rxqs, count; @@ ( -alloc_netdev_mqs(sizeof_priv, name, setup, txqs, rxqs) +alloc_netdev_mqs(sizeof_priv, name, NET_NAME_UNKNOWN, setup, txqs, rxqs) | -alloc_netdev_mq(sizeof_priv, name, setup, count) +alloc_netdev_mq(sizeof_priv, name, NET_NAME_UNKNOWN, setup, count) | -alloc_netdev(sizeof_priv, name, setup) +alloc_netdev(sizeof_priv, name, NET_NAME_UNKNOWN, setup) ) v9: move comments here from the wrong commit Signed-off-by:David Herrmann <dh.herrmann@gmail.com> Signed-off-by:
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Tom Gundersen authored
Based on a patch from David Herrmann. This is the only place devices can be renamed. v9: restore revers-christmas-tree order of local variables Signed-off-by:
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Tom Gundersen authored
Based on a patch by David Herrmann. The name_assign_type attribute gives hints where the interface name of a given net-device comes from. These values are currently defined: NET_NAME_ENUM: The ifname is provided by the kernel with an enumerated suffix, typically based on order of discovery. Names may be reused and unpredictable. NET_NAME_PREDICTABLE: The ifname has been assigned by the kernel in a predictable way that is guaranteed to avoid reuse and always be the same for a given device. Examples include statically created devices like the loopback device and names deduced from hardware properties (including being given explicitly by the firmware). Names depending on the order of discovery, or in any other way on the existence of other devices, must not be marked as PREDICTABLE. NET_NAME_USER: The ifname was provided by user-space during net-device setup. NET_NAME_RENAMED: The net-device has been renamed from userspace. Once this type is set, it cannot change again. NET_NAME_UNKNOWN: This is an internal placeholder to indicate that we yet haven't yet categorized the name. It will not be exposed to userspace, rather -EINVAL is returned. The aim of these patches is to improve user-space renaming of interfaces. As a general rule, userspace must rename interfaces to guarantee that names stay the same every time a given piece of hardware appears (at boot, or when attaching it). However, there are several situations where userspace should not perform the renaming, and that depends on both the policy of the local admin, but crucially also on the nature of the current interface name. If an interface was created in repsonse to a userspace request, and userspace already provided a name, we most probably want to leave that name alone. The main instance of this is wifi-P2P devices created over nl80211, which currently have a long-standing bug where they are getting renamed by udev. We label such names NET_NAME_USER. If an interface, unbeknown to us, has already been renamed from userspace, we most probably want to leave also that alone. This will typically happen when third-party plugins (for instance to udev, but the interface is generic so could be from anywhere) renames the interface without informing udev about it. A typical situation is when you switch root from an installer or an initrd to the real system and the new instance of udev does not know what happened before the switch. These types of problems have caused repeated issues in the past. To solve this, once an interface has been renamed, its name is labelled NET_NAME_RENAMED. In many cases, the kernel is actually able to name interfaces in such a way that there is no need for userspace to rename them. This is the case when the enumeration order of devices, or in fact any other (non-parent) device on the system, can not influence the name of the interface. Examples include statically created devices, or any naming schemes based on hardware properties of the interface. In this case the admin may prefer to use the kernel-provided names, and to make that possible we label such names NET_NAME_PREDICTABLE. We want the kernel to have tho possibilty of performing predictable interface naming itself (and exposing to userspace that it has), as the information necessary for a proper naming scheme for a certain class of devices may not be exposed to userspace. The case where renaming is almost certainly desired, is when the kernel has given the interface a name using global device enumeration based on order of discovery (ethX, wlanY, etc). These naming schemes are labelled NET_NAME_ENUM. Lastly, a fallback is left as NET_NAME_UNKNOWN, to indicate that a driver has not yet been ported. This is mostly useful as a transitionary measure, allowing us to label the various naming schemes bit by bit. v8: minor documentation fixes v9: move comment to the right commit Signed-off-by:Kay Sievers <kay@vrfy.org> Signed-off-by:
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