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
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/* SPDX-License-Identifier: GPL-2.0 */
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2016-03-15 21:35:37 +03:00
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#ifndef _SUNVNETCOMMON_H
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#define _SUNVNETCOMMON_H
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2007-07-10 09:23:51 +04:00
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2014-08-13 18:29:41 +04:00
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#include <linux/interrupt.h>
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2014-09-30 03:48:11 +04:00
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/* length of time (or less) we expect pending descriptors to be marked
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* as VIO_DESC_DONE and skbs ready to be freed
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*/
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2016-03-15 21:35:37 +03:00
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#define VNET_CLEAN_TIMEOUT ((HZ / 100) + 1)
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2014-09-30 03:48:11 +04:00
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2014-09-30 03:48:18 +04:00
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#define VNET_MAXPACKET (65535ULL + ETH_HLEN + VLAN_HLEN)
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2007-07-10 09:23:51 +04:00
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#define VNET_TX_RING_SIZE 512
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#define VNET_TX_WAKEUP_THRESH(dr) ((dr)->pending / 4)
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2014-12-02 23:31:38 +03:00
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#define VNET_MINTSO 2048 /* VIO protocol's minimum TSO len */
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#define VNET_MAXTSO 65535 /* VIO protocol's maximum TSO len */
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2016-10-17 22:54:10 +03:00
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#define VNET_MAX_MTU 65535
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2007-07-10 09:23:51 +04:00
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/* VNET packets are sent in buffers with the first 6 bytes skipped
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* so that after the ethernet header the IPv4/IPv6 headers are aligned
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* properly.
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*/
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#define VNET_PACKET_SKIP 6
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2016-03-15 21:35:37 +03:00
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#define VNET_MAXCOOKIES (VNET_MAXPACKET / PAGE_SIZE + 1)
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#define VNET_MAX_TXQS 16
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2014-09-30 03:48:18 +04:00
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2007-07-10 09:23:51 +04:00
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struct vnet_tx_entry {
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2014-09-30 03:48:11 +04:00
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struct sk_buff *skb;
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2007-07-10 09:23:51 +04:00
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unsigned int ncookies;
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2014-09-30 03:48:18 +04:00
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struct ldc_trans_cookie cookies[VNET_MAXCOOKIES];
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2007-07-10 09:23:51 +04:00
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};
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struct vnet;
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2016-03-15 21:35:38 +03:00
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2017-03-14 20:24:40 +03:00
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struct vnet_port_stats {
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/* keep them all the same size */
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u32 rx_bytes;
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u32 tx_bytes;
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u32 rx_packets;
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u32 tx_packets;
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u32 event_up;
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u32 event_reset;
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u32 q_placeholder;
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};
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#define NUM_VNET_PORT_STATS (sizeof(struct vnet_port_stats) / sizeof(u32))
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2016-03-15 21:35:38 +03:00
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/* Structure to describe a vnet-port or vsw-port in the MD.
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* If the vsw bit is set, this structure represents a vswitch
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* port, and the net_device can be found from ->dev. If the
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* vsw bit is not set, the net_device is available from ->vp->dev.
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* See the VNET_PORT_TO_NET_DEVICE macro below.
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*/
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2007-07-10 09:23:51 +04:00
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struct vnet_port {
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struct vio_driver_state vio;
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2017-03-14 20:24:40 +03:00
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struct vnet_port_stats stats;
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2007-07-10 09:23:51 +04:00
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struct hlist_node hash;
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u8 raddr[ETH_ALEN];
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2014-12-02 23:31:38 +03:00
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unsigned switch_port:1;
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unsigned tso:1;
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2016-03-15 21:35:38 +03:00
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unsigned vsw:1;
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unsigned __pad:13;
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2007-07-10 09:23:51 +04:00
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struct vnet *vp;
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2016-03-15 21:35:38 +03:00
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struct net_device *dev;
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2007-07-10 09:23:51 +04:00
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struct vnet_tx_entry tx_bufs[VNET_TX_RING_SIZE];
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struct list_head list;
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2014-09-11 17:57:22 +04:00
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u32 stop_rx_idx;
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bool stop_rx;
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bool start_cons;
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2014-09-30 03:47:59 +04:00
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2014-09-30 03:48:11 +04:00
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struct timer_list clean_timer;
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2014-09-30 03:47:59 +04:00
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u64 rmtu;
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2014-12-02 23:31:38 +03:00
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u16 tsolen;
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2014-10-25 23:12:12 +04:00
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struct napi_struct napi;
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u32 napi_stop_idx;
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bool napi_resume;
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int rx_event;
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2014-10-30 19:46:09 +03:00
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u16 q_index;
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2007-07-10 09:23:51 +04:00
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};
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static inline struct vnet_port *to_vnet_port(struct vio_driver_state *vio)
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{
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return container_of(vio, struct vnet_port, vio);
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}
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#define VNET_PORT_HASH_SIZE 16
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#define VNET_PORT_HASH_MASK (VNET_PORT_HASH_SIZE - 1)
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static inline unsigned int vnet_hashfn(u8 *mac)
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{
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unsigned int val = mac[4] ^ mac[5];
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return val & (VNET_PORT_HASH_MASK);
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}
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2007-07-20 13:30:25 +04:00
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struct vnet_mcast_entry {
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u8 addr[ETH_ALEN];
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u8 sent;
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u8 hit;
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struct vnet_mcast_entry *next;
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};
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2007-07-10 09:23:51 +04:00
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struct vnet {
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2017-03-14 20:24:41 +03:00
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spinlock_t lock; /* Protects port_list and port_hash. */
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2007-07-10 09:23:51 +04:00
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struct net_device *dev;
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u32 msg_enable;
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2017-03-14 20:24:41 +03:00
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u8 q_used[VNET_MAX_TXQS];
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2007-07-10 09:23:51 +04:00
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struct list_head port_list;
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struct hlist_head port_hash[VNET_PORT_HASH_SIZE];
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2007-07-20 13:30:25 +04:00
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struct vnet_mcast_entry *mcast_list;
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2007-07-18 09:19:10 +04:00
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struct list_head list;
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u64 local_mac;
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2014-10-30 19:46:09 +03:00
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int nports;
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2007-07-10 09:23:51 +04:00
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};
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2016-03-15 21:35:38 +03:00
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/* Def used by common code to get the net_device from the proper location */
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#define VNET_PORT_TO_NET_DEVICE(__port) \
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((__port)->vsw ? (__port)->dev : (__port)->vp->dev)
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2016-03-15 21:35:37 +03:00
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/* Common funcs */
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2017-10-17 03:29:28 +03:00
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void sunvnet_clean_timer_expire_common(struct timer_list *t);
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2016-03-15 21:35:37 +03:00
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int sunvnet_open_common(struct net_device *dev);
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int sunvnet_close_common(struct net_device *dev);
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2016-03-15 21:35:38 +03:00
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void sunvnet_set_rx_mode_common(struct net_device *dev, struct vnet *vp);
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2016-03-15 21:35:37 +03:00
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int sunvnet_set_mac_addr_common(struct net_device *dev, void *p);
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void sunvnet_tx_timeout_common(struct net_device *dev);
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2016-03-15 21:35:38 +03:00
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int sunvnet_start_xmit_common(struct sk_buff *skb, struct net_device *dev,
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struct vnet_port *(*vnet_tx_port)
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(struct sk_buff *, struct net_device *));
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2016-03-15 21:35:37 +03:00
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#ifdef CONFIG_NET_POLL_CONTROLLER
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2016-03-15 21:35:38 +03:00
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void sunvnet_poll_controller_common(struct net_device *dev, struct vnet *vp);
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2016-03-15 21:35:37 +03:00
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#endif
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void sunvnet_event_common(void *arg, int event);
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int sunvnet_send_attr_common(struct vio_driver_state *vio);
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int sunvnet_handle_attr_common(struct vio_driver_state *vio, void *arg);
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void sunvnet_handshake_complete_common(struct vio_driver_state *vio);
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int sunvnet_poll_common(struct napi_struct *napi, int budget);
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void sunvnet_port_free_tx_bufs_common(struct vnet_port *port);
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2017-03-14 20:24:39 +03:00
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void vnet_port_reset(struct vnet_port *port);
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2016-03-15 21:35:38 +03:00
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bool sunvnet_port_is_up_common(struct vnet_port *vnet);
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2016-03-15 21:35:37 +03:00
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void sunvnet_port_add_txq_common(struct vnet_port *port);
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void sunvnet_port_rm_txq_common(struct vnet_port *port);
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#endif /* _SUNVNETCOMMON_H */
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