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linux/drivers/s390/net/qeth_l2.h

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License cleanup: add SPDX GPL-2.0 license identifier to files with no license Many source files in the tree are missing licensing information, which makes it harder for compliance tools to determine the correct license. By default all files without license information are under the default license of the kernel, which is GPL version 2. Update the files which contain no license information with the 'GPL-2.0' SPDX license identifier. The SPDX identifier is a legally binding shorthand, which can be used instead of the full boiler plate text. This patch is based on work done by Thomas Gleixner and Kate Stewart and Philippe Ombredanne. How this work was done: Patches were generated and checked against linux-4.14-rc6 for a subset of the use cases: - file had no licensing information it it. - file was a */uapi/* one with no licensing information in it, - file was a */uapi/* one with existing licensing information, Further patches will be generated in subsequent months to fix up cases where non-standard license headers were used, and references to license had to be inferred by heuristics based on keywords. The analysis to determine which SPDX License Identifier to be applied to a file was done in a spreadsheet of side by side results from of the output of two independent scanners (ScanCode & Windriver) producing SPDX tag:value files created by Philippe Ombredanne. Philippe prepared the base worksheet, and did an initial spot review of a few 1000 files. The 4.13 kernel was the starting point of the analysis with 60,537 files assessed. Kate Stewart did a file by file comparison of the scanner results in the spreadsheet to determine which SPDX license identifier(s) to be applied to the file. She confirmed any determination that was not immediately clear with lawyers working with the Linux Foundation. Criteria used to select files for SPDX license identifier tagging was: - Files considered eligible had to be source code files. - Make and config files were included as candidates if they contained >5 lines of source - File already had some variant of a license header in it (even if <5 lines). All documentation files were explicitly excluded. The following heuristics were used to determine which SPDX license identifiers to apply. - when both scanners couldn't find any license traces, file was considered to have no license information in it, and the top level COPYING file license applied. For non */uapi/* files that summary was: SPDX license identifier # files ---------------------------------------------------|------- GPL-2.0 11139 and resulted in the first patch in this series. If that file was a */uapi/* path one, it was "GPL-2.0 WITH Linux-syscall-note" otherwise it was "GPL-2.0". Results of that was: SPDX license identifier # files ---------------------------------------------------|------- GPL-2.0 WITH Linux-syscall-note 930 and resulted in the second patch in this series. - if a file had some form of licensing information in it, and was one of the */uapi/* ones, it was denoted with the Linux-syscall-note if any GPL family license was found in the file or had no licensing in it (per prior point). Results summary: SPDX license identifier # files ---------------------------------------------------|------ GPL-2.0 WITH Linux-syscall-note 270 GPL-2.0+ WITH Linux-syscall-note 169 ((GPL-2.0 WITH Linux-syscall-note) OR BSD-2-Clause) 21 ((GPL-2.0 WITH Linux-syscall-note) OR BSD-3-Clause) 17 LGPL-2.1+ WITH Linux-syscall-note 15 GPL-1.0+ WITH Linux-syscall-note 14 ((GPL-2.0+ WITH Linux-syscall-note) OR BSD-3-Clause) 5 LGPL-2.0+ WITH Linux-syscall-note 4 LGPL-2.1 WITH Linux-syscall-note 3 ((GPL-2.0 WITH Linux-syscall-note) OR MIT) 3 ((GPL-2.0 WITH Linux-syscall-note) AND MIT) 1 and that resulted in the third patch in this series. - when the two scanners agreed on the detected license(s), that became the concluded license(s). - when there was disagreement between the two scanners (one detected a license but the other didn't, or they both detected different licenses) a manual inspection of the file occurred. - In most cases a manual inspection of the information in the file resulted in a clear resolution of the license that should apply (and which scanner probably needed to revisit its heuristics). - When it was not immediately clear, the license identifier was confirmed with lawyers working with the Linux Foundation. - If there was any question as to the appropriate license identifier, the file was flagged for further research and to be revisited later in time. In total, over 70 hours of logged manual review was done on the spreadsheet to determine the SPDX license identifiers to apply to the source files by Kate, Philippe, Thomas and, in some cases, confirmation by lawyers working with the Linux Foundation. Kate also obtained a third independent scan of the 4.13 code base from FOSSology, and compared selected files where the other two scanners disagreed against that SPDX file, to see if there was new insights. The Windriver scanner is based on an older version of FOSSology in part, so they are related. Thomas did random spot checks in about 500 files from the spreadsheets for the uapi headers and agreed with SPDX license identifier in the files he inspected. For the non-uapi files Thomas did random spot checks in about 15000 files. In initial set of patches against 4.14-rc6, 3 files were found to have copy/paste license identifier errors, and have been fixed to reflect the correct identifier. Additionally Philippe spent 10 hours this week doing a detailed manual inspection and review of the 12,461 patched files from the initial patch version early this week with: - a full scancode scan run, collecting the matched texts, detected license ids and scores - reviewing anything where there was a license detected (about 500+ files) to ensure that the applied SPDX license was correct - reviewing anything where there was no detection but the patch license was not GPL-2.0 WITH Linux-syscall-note to ensure that the applied SPDX license was correct This produced a worksheet with 20 files needing minor correction. This worksheet was then exported into 3 different .csv files for the different types of files to be modified. These .csv files were then reviewed by Greg. Thomas wrote a script to parse the csv files and add the proper SPDX tag to the file, in the format that the file expected. This script was further refined by Greg based on the output to detect more types of files automatically and to distinguish between header and source .c files (which need different comment types.) Finally Greg ran the script using the .csv files to generate the patches. Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Reviewed-by: Philippe Ombredanne <pombredanne@nexb.com> Reviewed-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-11-01 17:07:57 +03:00
/* SPDX-License-Identifier: GPL-2.0 */
qeth: bridgeport support - basic control Introduce functions to assign roles and check state of bridgeport-capable HiperSocket devices, and sysfs attributes providing access to these functions from userspace. Introduce udev events emitted when the state of a bridgeport device changes. Signed-off-by: Eugene Crosser <eugene.crosser@ru.ibm.com> Signed-off-by: Frank Blaschka <frank.blaschka@de.ibm.com> Reviewed-by: Ursula Braun <ursula.braun@de.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-01-14 18:54:11 +04:00
/*
* Copyright IBM Corp. 2013
* Author(s): Eugene Crosser <eugene.crosser@ru.ibm.com>
*/
#ifndef __QETH_L2_H__
#define __QETH_L2_H__
#include "qeth_core.h"
s390/qeth: unbreak OSM and OSN support commit b4d72c08b358 ("qeth: bridgeport support - basic control") broke the support for OSM and OSN devices as follows: As OSM and OSN are L2 only, qeth_core_probe_device() does an early setup by loading the l2 discipline and calling qeth_l2_probe_device(). In this context, adding the l2-specific bridgeport sysfs attributes via qeth_l2_create_device_attributes() hits a BUG_ON in fs/sysfs/group.c, since the basic sysfs infrastructure for the device hasn't been established yet. Note that OSN actually has its own unique sysfs attributes (qeth_osn_devtype), so the additional attributes shouldn't be created at all. For OSM, add a new qeth_l2_devtype that contains all the common and l2-specific sysfs attributes. When qeth_core_probe_device() does early setup for OSM or OSN, assign the corresponding devtype so that the ccwgroup probe code creates the full set of sysfs attributes. This allows us to skip qeth_l2_create_device_attributes() in case of an early setup. Any device that can't do early setup will initially have only the generic sysfs attributes, and when it's probed later qeth_l2_probe_device() adds the l2-specific attributes. If an early-setup device is removed (by calling ccwgroup_ungroup()), device_unregister() will - using the devtype - delete the l2-specific attributes before qeth_l2_remove_device() is called. So make sure to not remove them twice. What complicates the issue is that qeth_l2_probe_device() and qeth_l2_remove_device() is also called on a device when its layer2 attribute changes (ie. its layer mode is switched). For early-setup devices this wouldn't work properly - we wouldn't remove the l2-specific attributes when switching to L3. But switching the layer mode doesn't actually make any sense; we already decided that the device can only operate in L2! So just refuse to switch the layer mode on such devices. Note that OSN doesn't have a layer2 attribute, so we only need to special-case OSM. Based on an initial patch by Ursula Braun. Fixes: b4d72c08b358 ("qeth: bridgeport support - basic control") Signed-off-by: Julian Wiedmann <jwi@linux.vnet.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-05-10 20:07:52 +03:00
extern const struct attribute_group *qeth_l2_attr_groups[];
s390/qeth: clean up exported symbols Remove some redundant EXPORTs. While at it, also move some L2-only prototypes into the proper header file. Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-07-11 18:42:43 +03:00
int qeth_bridgeport_query_ports(struct qeth_card *card,
enum qeth_sbp_roles *role,
enum qeth_sbp_states *state);
int qeth_bridgeport_setrole(struct qeth_card *card, enum qeth_sbp_roles role);
int qeth_bridgeport_an_set(struct qeth_card *card, int enable);
qeth: bridgeport support - basic control Introduce functions to assign roles and check state of bridgeport-capable HiperSocket devices, and sysfs attributes providing access to these functions from userspace. Introduce udev events emitted when the state of a bridgeport device changes. Signed-off-by: Eugene Crosser <eugene.crosser@ru.ibm.com> Signed-off-by: Frank Blaschka <frank.blaschka@de.ibm.com> Reviewed-by: Ursula Braun <ursula.braun@de.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-01-14 18:54:11 +04:00
s390/qeth: add VNICC enable/disable support HiperSocket devices allow enabling and disabling so called VNIC Characteristics (VNICC) that influence how the underlying hardware handles packets. These VNICCs are: * Flooding VNICC: Flooding allows specifying if packets to unknown destination MAC addresses are received by the qeth device. * Multicast flooding VNICC: Multicast flooding allows specifying if packets to multicast MAC addresses are received by the qeth device. * Learning VNICC: If learning is enabled on a qeth device, the device learns the source MAC addresses of outgoing packets and incoming packets to those learned MAC addresses are received. * Takeover setvmac VNICC: If takeover setvmac is configured on a qeth device, the MAC address of this device can be configured on a different qeth device with the setvmac IPA command. * Takeover by learning VNICC: If takeover learning is enabled on a qeth device, the MAC address of this device can be learned (learning VNICC) on a different qeth device. * BridgePort invisible VNICC: If BridgePort invisible is enabled on a qeth device, (1) packets from this device are not sent to a BridgePort enabled qeth device and (2) packets coming from a BridgePort enabled qeth device are not received by this device. * Receive broadcast VNICC: Receive broadcast allows configuring if a qeth device receives packets with the broadcast destination MAC address. This patch adds support for the IPA commands that are required to enable and disable these VNIC characteristics on qeth devices. As a prerequisite, it also adds the query commands IPA command. The query commands IPA command allows requesting the supported commands for each characteristic from the underlying hardware. Additionally, this patch provides users with a sysfs user interface to enable/disable the VNICCs mentioned above. Signed-off-by: Hans Wippel <hwippel@linux.vnet.ibm.com> Reviewed-by: Julian Wiedmann <jwi@linux.vnet.ibm.com> Signed-off-by: Julian Wiedmann <jwi@linux.vnet.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-09-18 22:18:15 +03:00
int qeth_l2_vnicc_set_state(struct qeth_card *card, u32 vnicc, bool state);
int qeth_l2_vnicc_get_state(struct qeth_card *card, u32 vnicc, bool *state);
s390/qeth: add VNICC get/set timeout support HiperSockets allow configuring so called VNIC Characteristics (VNICC) that influence how the underlying hardware handles packets. For VNICCs, additional commands for getting and setting timeouts are available. Currently, the learning VNICC uses these commands. * Learning VNICC: If learning is enabled on a qeth device, the device learns the source MAC addresses of outgoing packets and incoming packets to those learned MAC addresses are received. For learning, the timeout specifies the idle period in seconds, after which the underlying hardware removes a learned MAC address again. This patch adds support for the IPA commands that are required to get and set the current timeout values for the learning VNIC characteristic. Also, it introduces the sysfs interface that allows users to configure the timeout. Signed-off-by: Hans Wippel <hwippel@linux.vnet.ibm.com> Reviewed-by: Julian Wiedmann <jwi@linux.vnet.ibm.com> Signed-off-by: Julian Wiedmann <jwi@linux.vnet.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-09-18 22:18:16 +03:00
int qeth_l2_vnicc_set_timeout(struct qeth_card *card, u32 timeout);
int qeth_l2_vnicc_get_timeout(struct qeth_card *card, u32 *timeout);
s390/qeth: Reset address notification in case of buffer overflow In case hardware sends more device-to-bridge-address-change notfications than the qeth-l2 driver can handle, the hardware will send an overflow event and then stop sending any events. It expects software to flush its FDB and start over again. Re-enabling address-change-notification will report all current addresses. In order to re-enable address-change-notification this patch defines the functions qeth_l2_dev2br_an_set() and qeth_l2_dev2br_an_set_cb to enable or disable dev-to-bridge-address-notification. A following patch will use the learning_sync bridgeport flag to trigger enabling or disabling of address-change-notification, so we define priv->brport_features to store the current setting. BRIDGE_INFO and ADDR_INFO functionality are mutually exclusive, whereas ADDR_INFO and qeth_l2_vnicc* can be used together. Alternative implementations to handle buffer overflow: Just re-enabling notification and adding all newly reported addresses would cover any lost 'add' events, but not the lost 'delete' events. Then these invalid addresses would stay in the bridge FDB as long as the device exists. Setting the net device down and up, would be an alternative, but is a bit drastic. If the net device has many secondary addresses this will create many delete/add events at its peers which could de-stabilize the network segment. Signed-off-by: Alexandra Winter <wintera@linux.ibm.com> Reviewed-by: Julian Wiedmann <jwi@linux.ibm.com> Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-09-10 20:23:49 +03:00
bool qeth_bridgeport_allowed(struct qeth_card *card);
s390/qeth: add VNICC enable/disable support HiperSocket devices allow enabling and disabling so called VNIC Characteristics (VNICC) that influence how the underlying hardware handles packets. These VNICCs are: * Flooding VNICC: Flooding allows specifying if packets to unknown destination MAC addresses are received by the qeth device. * Multicast flooding VNICC: Multicast flooding allows specifying if packets to multicast MAC addresses are received by the qeth device. * Learning VNICC: If learning is enabled on a qeth device, the device learns the source MAC addresses of outgoing packets and incoming packets to those learned MAC addresses are received. * Takeover setvmac VNICC: If takeover setvmac is configured on a qeth device, the MAC address of this device can be configured on a different qeth device with the setvmac IPA command. * Takeover by learning VNICC: If takeover learning is enabled on a qeth device, the MAC address of this device can be learned (learning VNICC) on a different qeth device. * BridgePort invisible VNICC: If BridgePort invisible is enabled on a qeth device, (1) packets from this device are not sent to a BridgePort enabled qeth device and (2) packets coming from a BridgePort enabled qeth device are not received by this device. * Receive broadcast VNICC: Receive broadcast allows configuring if a qeth device receives packets with the broadcast destination MAC address. This patch adds support for the IPA commands that are required to enable and disable these VNIC characteristics on qeth devices. As a prerequisite, it also adds the query commands IPA command. The query commands IPA command allows requesting the supported commands for each characteristic from the underlying hardware. Additionally, this patch provides users with a sysfs user interface to enable/disable the VNICCs mentioned above. Signed-off-by: Hans Wippel <hwippel@linux.vnet.ibm.com> Reviewed-by: Julian Wiedmann <jwi@linux.vnet.ibm.com> Signed-off-by: Julian Wiedmann <jwi@linux.vnet.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-09-18 22:18:15 +03:00
qeth: optimize IP handling in rx_mode callback In layer3 mode of the qeth driver, multicast IP addresses from struct net_device and other type of IP addresses from other sources require mapping to the OSA-card. This patch simplifies the IP address mapping logic, and changes imple- mentation of ndo_set_rx_mode callback and ip notifier events. Addresses are stored in private hashtables instead of lists now. It allows hardware registration/removal for new/deleted multicast addresses only. Signed-off-by: Lakhvich Dmitriy <ldmitriy@ru.ibm.com> Signed-off-by: Ursula Braun <ubraun@linux.vnet.ibm.com> Reviewed-by: Evgeny Cherkashin <Eugene.Crosser@ru.ibm.com> Reviewed-by: Thomas Richter <tmricht@linux.vnet.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-06-16 17:18:58 +03:00
struct qeth_mac {
s390/qeth: use ether_addr_* helpers Be a little more self-documenting, and get rid of OSA_ADDR_LEN. Signed-off-by: Julian Wiedmann <jwi@linux.vnet.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-12-20 22:11:01 +03:00
u8 mac_addr[ETH_ALEN];
qeth: optimize IP handling in rx_mode callback In layer3 mode of the qeth driver, multicast IP addresses from struct net_device and other type of IP addresses from other sources require mapping to the OSA-card. This patch simplifies the IP address mapping logic, and changes imple- mentation of ndo_set_rx_mode callback and ip notifier events. Addresses are stored in private hashtables instead of lists now. It allows hardware registration/removal for new/deleted multicast addresses only. Signed-off-by: Lakhvich Dmitriy <ldmitriy@ru.ibm.com> Signed-off-by: Ursula Braun <ubraun@linux.vnet.ibm.com> Reviewed-by: Evgeny Cherkashin <Eugene.Crosser@ru.ibm.com> Reviewed-by: Thomas Richter <tmricht@linux.vnet.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-06-16 17:18:58 +03:00
u8 disp_flag:2;
struct hlist_node hnode;
};
s390/qeth: remove forward declarations in L2 code Shuffle some code around (primarily all the discipline-related stuff) to get rid of all the unnecessary forward declarations. Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-09-23 11:37:00 +03:00
static inline bool qeth_bridgeport_is_in_use(struct qeth_card *card)
{
return card->options.sbp.role ||
card->options.sbp.reflect_promisc ||
card->options.sbp.hostnotification;
}
qeth: bridgeport support - basic control Introduce functions to assign roles and check state of bridgeport-capable HiperSocket devices, and sysfs attributes providing access to these functions from userspace. Introduce udev events emitted when the state of a bridgeport device changes. Signed-off-by: Eugene Crosser <eugene.crosser@ru.ibm.com> Signed-off-by: Frank Blaschka <frank.blaschka@de.ibm.com> Reviewed-by: Ursula Braun <ursula.braun@de.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-01-14 18:54:11 +04:00
#endif /* __QETH_L2_H__ */
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