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 22:07:57 +08:00
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// SPDX-License-Identifier: GPL-2.0
|
2012-12-07 08:04:48 +08:00
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#include <linux/err.h>
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|
#include <linux/igmp.h>
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|
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#include <linux/kernel.h>
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#include <linux/netdevice.h>
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#include <linux/rculist.h>
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#include <linux/skbuff.h>
|
2012-12-12 06:23:08 +08:00
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#include <linux/if_ether.h>
|
2012-12-07 08:04:48 +08:00
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#include <net/ip.h>
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|
#include <net/netlink.h>
|
2016-01-11 04:06:23 +08:00
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#include <net/switchdev.h>
|
2012-12-07 08:04:48 +08:00
|
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|
#if IS_ENABLED(CONFIG_IPV6)
|
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|
#include <net/ipv6.h>
|
2013-09-04 08:13:39 +08:00
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|
#include <net/addrconf.h>
|
2012-12-07 08:04:48 +08:00
|
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|
#endif
|
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|
#include "br_private.h"
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static int br_rports_fill_info(struct sk_buff *skb, struct netlink_callback *cb,
|
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struct net_device *dev)
|
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|
|
|
{
|
|
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|
struct net_bridge *br = netdev_priv(dev);
|
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struct net_bridge_port *p;
|
2016-02-27 04:20:04 +08:00
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struct nlattr *nest, *port_nest;
|
2012-12-07 08:04:48 +08:00
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|
if (!br->multicast_router || hlist_empty(&br->router_list))
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|
return 0;
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nest = nla_nest_start(skb, MDBA_ROUTER);
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|
if (nest == NULL)
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return -EMSGSIZE;
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hlist: drop the node parameter from iterators
I'm not sure why, but the hlist for each entry iterators were conceived
list_for_each_entry(pos, head, member)
The hlist ones were greedy and wanted an extra parameter:
hlist_for_each_entry(tpos, pos, head, member)
Why did they need an extra pos parameter? I'm not quite sure. Not only
they don't really need it, it also prevents the iterator from looking
exactly like the list iterator, which is unfortunate.
Besides the semantic patch, there was some manual work required:
- Fix up the actual hlist iterators in linux/list.h
- Fix up the declaration of other iterators based on the hlist ones.
- A very small amount of places were using the 'node' parameter, this
was modified to use 'obj->member' instead.
- Coccinelle didn't handle the hlist_for_each_entry_safe iterator
properly, so those had to be fixed up manually.
The semantic patch which is mostly the work of Peter Senna Tschudin is here:
@@
iterator name hlist_for_each_entry, hlist_for_each_entry_continue, hlist_for_each_entry_from, hlist_for_each_entry_rcu, hlist_for_each_entry_rcu_bh, hlist_for_each_entry_continue_rcu_bh, for_each_busy_worker, ax25_uid_for_each, ax25_for_each, inet_bind_bucket_for_each, sctp_for_each_hentry, sk_for_each, sk_for_each_rcu, sk_for_each_from, sk_for_each_safe, sk_for_each_bound, hlist_for_each_entry_safe, hlist_for_each_entry_continue_rcu, nr_neigh_for_each, nr_neigh_for_each_safe, nr_node_for_each, nr_node_for_each_safe, for_each_gfn_indirect_valid_sp, for_each_gfn_sp, for_each_host;
type T;
expression a,c,d,e;
identifier b;
statement S;
@@
-T b;
<+... when != b
(
hlist_for_each_entry(a,
- b,
c, d) S
|
hlist_for_each_entry_continue(a,
- b,
c) S
|
hlist_for_each_entry_from(a,
- b,
c) S
|
hlist_for_each_entry_rcu(a,
- b,
c, d) S
|
hlist_for_each_entry_rcu_bh(a,
- b,
c, d) S
|
hlist_for_each_entry_continue_rcu_bh(a,
- b,
c) S
|
for_each_busy_worker(a, c,
- b,
d) S
|
ax25_uid_for_each(a,
- b,
c) S
|
ax25_for_each(a,
- b,
c) S
|
inet_bind_bucket_for_each(a,
- b,
c) S
|
sctp_for_each_hentry(a,
- b,
c) S
|
sk_for_each(a,
- b,
c) S
|
sk_for_each_rcu(a,
- b,
c) S
|
sk_for_each_from
-(a, b)
+(a)
S
+ sk_for_each_from(a) S
|
sk_for_each_safe(a,
- b,
c, d) S
|
sk_for_each_bound(a,
- b,
c) S
|
hlist_for_each_entry_safe(a,
- b,
c, d, e) S
|
hlist_for_each_entry_continue_rcu(a,
- b,
c) S
|
nr_neigh_for_each(a,
- b,
c) S
|
nr_neigh_for_each_safe(a,
- b,
c, d) S
|
nr_node_for_each(a,
- b,
c) S
|
nr_node_for_each_safe(a,
- b,
c, d) S
|
- for_each_gfn_sp(a, c, d, b) S
+ for_each_gfn_sp(a, c, d) S
|
- for_each_gfn_indirect_valid_sp(a, c, d, b) S
+ for_each_gfn_indirect_valid_sp(a, c, d) S
|
for_each_host(a,
- b,
c) S
|
for_each_host_safe(a,
- b,
c, d) S
|
for_each_mesh_entry(a,
- b,
c, d) S
)
...+>
[akpm@linux-foundation.org: drop bogus change from net/ipv4/raw.c]
[akpm@linux-foundation.org: drop bogus hunk from net/ipv6/raw.c]
[akpm@linux-foundation.org: checkpatch fixes]
[akpm@linux-foundation.org: fix warnings]
[akpm@linux-foudnation.org: redo intrusive kvm changes]
Tested-by: Peter Senna Tschudin <peter.senna@gmail.com>
Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Signed-off-by: Sasha Levin <sasha.levin@oracle.com>
Cc: Wu Fengguang <fengguang.wu@intel.com>
Cc: Marcelo Tosatti <mtosatti@redhat.com>
Cc: Gleb Natapov <gleb@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-02-28 09:06:00 +08:00
|
|
|
hlist_for_each_entry_rcu(p, &br->router_list, rlist) {
|
2016-02-27 04:20:04 +08:00
|
|
|
if (!p)
|
|
|
|
|
continue;
|
|
|
|
|
port_nest = nla_nest_start(skb, MDBA_ROUTER_PORT);
|
|
|
|
|
if (!port_nest)
|
2012-12-07 08:04:48 +08:00
|
|
|
goto fail;
|
2016-02-27 04:20:04 +08:00
|
|
|
if (nla_put_nohdr(skb, sizeof(u32), &p->dev->ifindex) ||
|
|
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|
|
nla_put_u32(skb, MDBA_ROUTER_PATTR_TIMER,
|
|
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|
|
br_timer_value(&p->multicast_router_timer)) ||
|
|
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|
nla_put_u8(skb, MDBA_ROUTER_PATTR_TYPE,
|
|
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|
|
p->multicast_router)) {
|
|
|
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|
nla_nest_cancel(skb, port_nest);
|
|
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|
|
goto fail;
|
|
|
|
|
}
|
|
|
|
|
nla_nest_end(skb, port_nest);
|
2012-12-07 08:04:48 +08:00
|
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|
}
|
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|
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|
nla_nest_end(skb, nest);
|
|
|
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|
return 0;
|
|
|
|
|
fail:
|
|
|
|
|
nla_nest_cancel(skb, nest);
|
|
|
|
|
return -EMSGSIZE;
|
|
|
|
|
}
|
|
|
|
|
|
2016-02-03 16:57:05 +08:00
|
|
|
static void __mdb_entry_fill_flags(struct br_mdb_entry *e, unsigned char flags)
|
|
|
|
|
{
|
|
|
|
|
e->state = flags & MDB_PG_FLAGS_PERMANENT;
|
|
|
|
|
e->flags = 0;
|
|
|
|
|
if (flags & MDB_PG_FLAGS_OFFLOAD)
|
|
|
|
|
e->flags |= MDB_FLAGS_OFFLOAD;
|
|
|
|
|
}
|
|
|
|
|
|
2016-04-21 18:52:44 +08:00
|
|
|
static void __mdb_entry_to_br_ip(struct br_mdb_entry *entry, struct br_ip *ip)
|
|
|
|
|
{
|
|
|
|
|
memset(ip, 0, sizeof(struct br_ip));
|
|
|
|
|
ip->vid = entry->vid;
|
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|
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|
ip->proto = entry->addr.proto;
|
|
|
|
|
if (ip->proto == htons(ETH_P_IP))
|
|
|
|
|
ip->u.ip4 = entry->addr.u.ip4;
|
|
|
|
|
#if IS_ENABLED(CONFIG_IPV6)
|
|
|
|
|
else
|
|
|
|
|
ip->u.ip6 = entry->addr.u.ip6;
|
|
|
|
|
#endif
|
|
|
|
|
}
|
|
|
|
|
|
2012-12-07 08:04:48 +08:00
|
|
|
static int br_mdb_fill_info(struct sk_buff *skb, struct netlink_callback *cb,
|
|
|
|
|
struct net_device *dev)
|
|
|
|
|
{
|
2018-12-05 21:14:24 +08:00
|
|
|
int idx = 0, s_idx = cb->args[1], err = 0;
|
2012-12-07 08:04:48 +08:00
|
|
|
struct net_bridge *br = netdev_priv(dev);
|
2018-12-05 21:14:24 +08:00
|
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|
struct net_bridge_mdb_entry *mp;
|
2012-12-07 08:04:48 +08:00
|
|
|
struct nlattr *nest, *nest2;
|
|
|
|
|
|
2018-09-26 22:01:03 +08:00
|
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|
if (!br_opt_get(br, BROPT_MULTICAST_ENABLED))
|
2012-12-07 08:04:48 +08:00
|
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|
return 0;
|
|
|
|
|
|
|
|
|
|
nest = nla_nest_start(skb, MDBA_MDB);
|
|
|
|
|
if (nest == NULL)
|
|
|
|
|
return -EMSGSIZE;
|
|
|
|
|
|
2018-12-05 21:14:24 +08:00
|
|
|
hlist_for_each_entry_rcu(mp, &br->mdb_list, mdb_node) {
|
2013-08-05 08:19:38 +08:00
|
|
|
struct net_bridge_port_group *p;
|
|
|
|
|
struct net_bridge_port_group __rcu **pp;
|
2012-12-07 08:04:48 +08:00
|
|
|
struct net_bridge_port *port;
|
|
|
|
|
|
2018-12-05 21:14:24 +08:00
|
|
|
if (idx < s_idx)
|
|
|
|
|
goto skip;
|
2012-12-07 08:04:48 +08:00
|
|
|
|
2018-12-05 21:14:24 +08:00
|
|
|
nest2 = nla_nest_start(skb, MDBA_MDB_ENTRY);
|
|
|
|
|
if (!nest2) {
|
|
|
|
|
err = -EMSGSIZE;
|
|
|
|
|
break;
|
|
|
|
|
}
|
2012-12-07 08:04:48 +08:00
|
|
|
|
2018-12-05 21:14:24 +08:00
|
|
|
for (pp = &mp->ports; (p = rcu_dereference(*pp)) != NULL;
|
|
|
|
|
pp = &p->next) {
|
|
|
|
|
struct nlattr *nest_ent;
|
|
|
|
|
struct br_mdb_entry e;
|
|
|
|
|
|
|
|
|
|
port = p->port;
|
|
|
|
|
if (!port)
|
|
|
|
|
continue;
|
|
|
|
|
|
|
|
|
|
memset(&e, 0, sizeof(e));
|
|
|
|
|
e.ifindex = port->dev->ifindex;
|
|
|
|
|
e.vid = p->addr.vid;
|
|
|
|
|
__mdb_entry_fill_flags(&e, p->flags);
|
|
|
|
|
if (p->addr.proto == htons(ETH_P_IP))
|
|
|
|
|
e.addr.u.ip4 = p->addr.u.ip4;
|
2012-12-07 08:04:48 +08:00
|
|
|
#if IS_ENABLED(CONFIG_IPV6)
|
2018-12-05 21:14:24 +08:00
|
|
|
if (p->addr.proto == htons(ETH_P_IPV6))
|
|
|
|
|
e.addr.u.ip6 = p->addr.u.ip6;
|
2012-12-07 08:04:48 +08:00
|
|
|
#endif
|
2018-12-05 21:14:24 +08:00
|
|
|
e.addr.proto = p->addr.proto;
|
|
|
|
|
nest_ent = nla_nest_start(skb, MDBA_MDB_ENTRY_INFO);
|
|
|
|
|
if (!nest_ent) {
|
|
|
|
|
nla_nest_cancel(skb, nest2);
|
|
|
|
|
err = -EMSGSIZE;
|
|
|
|
|
goto out;
|
2012-12-07 08:04:48 +08:00
|
|
|
}
|
2018-12-05 21:14:24 +08:00
|
|
|
if (nla_put_nohdr(skb, sizeof(e), &e) ||
|
|
|
|
|
nla_put_u32(skb,
|
|
|
|
|
MDBA_MDB_EATTR_TIMER,
|
|
|
|
|
br_timer_value(&p->timer))) {
|
|
|
|
|
nla_nest_cancel(skb, nest_ent);
|
|
|
|
|
nla_nest_cancel(skb, nest2);
|
|
|
|
|
err = -EMSGSIZE;
|
|
|
|
|
goto out;
|
|
|
|
|
}
|
|
|
|
|
nla_nest_end(skb, nest_ent);
|
2012-12-07 08:04:48 +08:00
|
|
|
}
|
2018-12-05 21:14:24 +08:00
|
|
|
nla_nest_end(skb, nest2);
|
|
|
|
|
skip:
|
|
|
|
|
idx++;
|
2012-12-07 08:04:48 +08:00
|
|
|
}
|
|
|
|
|
|
|
|
|
|
out:
|
|
|
|
|
cb->args[1] = idx;
|
|
|
|
|
nla_nest_end(skb, nest);
|
|
|
|
|
return err;
|
|
|
|
|
}
|
|
|
|
|
|
2018-10-08 11:16:42 +08:00
|
|
|
static int br_mdb_valid_dump_req(const struct nlmsghdr *nlh,
|
|
|
|
|
struct netlink_ext_ack *extack)
|
|
|
|
|
{
|
|
|
|
|
struct br_port_msg *bpm;
|
|
|
|
|
|
|
|
|
|
if (nlh->nlmsg_len < nlmsg_msg_size(sizeof(*bpm))) {
|
|
|
|
|
NL_SET_ERR_MSG_MOD(extack, "Invalid header for mdb dump request");
|
|
|
|
|
return -EINVAL;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
bpm = nlmsg_data(nlh);
|
|
|
|
|
if (bpm->ifindex) {
|
|
|
|
|
NL_SET_ERR_MSG_MOD(extack, "Filtering by device index is not supported for mdb dump request");
|
|
|
|
|
return -EINVAL;
|
|
|
|
|
}
|
|
|
|
|
if (nlmsg_attrlen(nlh, sizeof(*bpm))) {
|
|
|
|
|
NL_SET_ERR_MSG(extack, "Invalid data after header in mdb dump request");
|
|
|
|
|
return -EINVAL;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
|
}
|
|
|
|
|
|
2012-12-07 08:04:48 +08:00
|
|
|
static int br_mdb_dump(struct sk_buff *skb, struct netlink_callback *cb)
|
|
|
|
|
{
|
|
|
|
|
struct net_device *dev;
|
|
|
|
|
struct net *net = sock_net(skb->sk);
|
|
|
|
|
struct nlmsghdr *nlh = NULL;
|
|
|
|
|
int idx = 0, s_idx;
|
|
|
|
|
|
2018-10-08 11:16:42 +08:00
|
|
|
if (cb->strict_check) {
|
|
|
|
|
int err = br_mdb_valid_dump_req(cb->nlh, cb->extack);
|
|
|
|
|
|
|
|
|
|
if (err < 0)
|
|
|
|
|
return err;
|
|
|
|
|
}
|
|
|
|
|
|
2012-12-07 08:04:48 +08:00
|
|
|
s_idx = cb->args[0];
|
|
|
|
|
|
|
|
|
|
rcu_read_lock();
|
|
|
|
|
|
2018-12-05 21:14:24 +08:00
|
|
|
cb->seq = net->dev_base_seq;
|
2012-12-07 08:04:48 +08:00
|
|
|
|
|
|
|
|
for_each_netdev_rcu(net, dev) {
|
|
|
|
|
if (dev->priv_flags & IFF_EBRIDGE) {
|
|
|
|
|
struct br_port_msg *bpm;
|
|
|
|
|
|
|
|
|
|
if (idx < s_idx)
|
|
|
|
|
goto skip;
|
|
|
|
|
|
|
|
|
|
nlh = nlmsg_put(skb, NETLINK_CB(cb->skb).portid,
|
|
|
|
|
cb->nlh->nlmsg_seq, RTM_GETMDB,
|
|
|
|
|
sizeof(*bpm), NLM_F_MULTI);
|
|
|
|
|
if (nlh == NULL)
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
|
|
bpm = nlmsg_data(nlh);
|
2013-03-09 13:52:19 +08:00
|
|
|
memset(bpm, 0, sizeof(*bpm));
|
2012-12-07 08:04:48 +08:00
|
|
|
bpm->ifindex = dev->ifindex;
|
|
|
|
|
if (br_mdb_fill_info(skb, cb, dev) < 0)
|
|
|
|
|
goto out;
|
|
|
|
|
if (br_rports_fill_info(skb, cb, dev) < 0)
|
|
|
|
|
goto out;
|
|
|
|
|
|
|
|
|
|
cb->args[1] = 0;
|
|
|
|
|
nlmsg_end(skb, nlh);
|
|
|
|
|
skip:
|
|
|
|
|
idx++;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
out:
|
|
|
|
|
if (nlh)
|
|
|
|
|
nlmsg_end(skb, nlh);
|
|
|
|
|
rcu_read_unlock();
|
|
|
|
|
cb->args[0] = idx;
|
|
|
|
|
return skb->len;
|
|
|
|
|
}
|
|
|
|
|
|
2012-12-12 06:23:07 +08:00
|
|
|
static int nlmsg_populate_mdb_fill(struct sk_buff *skb,
|
|
|
|
|
struct net_device *dev,
|
|
|
|
|
struct br_mdb_entry *entry, u32 pid,
|
|
|
|
|
u32 seq, int type, unsigned int flags)
|
|
|
|
|
{
|
|
|
|
|
struct nlmsghdr *nlh;
|
|
|
|
|
struct br_port_msg *bpm;
|
|
|
|
|
struct nlattr *nest, *nest2;
|
|
|
|
|
|
2015-04-29 00:33:48 +08:00
|
|
|
nlh = nlmsg_put(skb, pid, seq, type, sizeof(*bpm), 0);
|
2012-12-12 06:23:07 +08:00
|
|
|
if (!nlh)
|
|
|
|
|
return -EMSGSIZE;
|
|
|
|
|
|
|
|
|
|
bpm = nlmsg_data(nlh);
|
2013-03-09 13:52:19 +08:00
|
|
|
memset(bpm, 0, sizeof(*bpm));
|
2012-12-12 06:23:07 +08:00
|
|
|
bpm->family = AF_BRIDGE;
|
|
|
|
|
bpm->ifindex = dev->ifindex;
|
|
|
|
|
nest = nla_nest_start(skb, MDBA_MDB);
|
|
|
|
|
if (nest == NULL)
|
|
|
|
|
goto cancel;
|
|
|
|
|
nest2 = nla_nest_start(skb, MDBA_MDB_ENTRY);
|
|
|
|
|
if (nest2 == NULL)
|
|
|
|
|
goto end;
|
|
|
|
|
|
|
|
|
|
if (nla_put(skb, MDBA_MDB_ENTRY_INFO, sizeof(*entry), entry))
|
|
|
|
|
goto end;
|
|
|
|
|
|
|
|
|
|
nla_nest_end(skb, nest2);
|
|
|
|
|
nla_nest_end(skb, nest);
|
2015-01-17 05:09:00 +08:00
|
|
|
nlmsg_end(skb, nlh);
|
|
|
|
|
return 0;
|
2012-12-12 06:23:07 +08:00
|
|
|
|
|
|
|
|
end:
|
|
|
|
|
nla_nest_end(skb, nest);
|
|
|
|
|
cancel:
|
|
|
|
|
nlmsg_cancel(skb, nlh);
|
|
|
|
|
return -EMSGSIZE;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
static inline size_t rtnl_mdb_nlmsg_size(void)
|
|
|
|
|
{
|
|
|
|
|
return NLMSG_ALIGN(sizeof(struct br_port_msg))
|
|
|
|
|
+ nla_total_size(sizeof(struct br_mdb_entry));
|
|
|
|
|
}
|
|
|
|
|
|
2016-04-21 18:52:45 +08:00
|
|
|
struct br_mdb_complete_info {
|
|
|
|
|
struct net_bridge_port *port;
|
|
|
|
|
struct br_ip ip;
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
static void br_mdb_complete(struct net_device *dev, int err, void *priv)
|
2012-12-12 06:23:07 +08:00
|
|
|
{
|
2016-04-21 18:52:45 +08:00
|
|
|
struct br_mdb_complete_info *data = priv;
|
|
|
|
|
struct net_bridge_port_group __rcu **pp;
|
|
|
|
|
struct net_bridge_port_group *p;
|
|
|
|
|
struct net_bridge_mdb_entry *mp;
|
|
|
|
|
struct net_bridge_port *port = data->port;
|
|
|
|
|
struct net_bridge *br = port->br;
|
|
|
|
|
|
|
|
|
|
if (err)
|
|
|
|
|
goto err;
|
|
|
|
|
|
|
|
|
|
spin_lock_bh(&br->multicast_lock);
|
2018-12-05 21:14:24 +08:00
|
|
|
mp = br_mdb_ip_get(br, &data->ip);
|
2016-04-21 18:52:45 +08:00
|
|
|
if (!mp)
|
|
|
|
|
goto out;
|
|
|
|
|
for (pp = &mp->ports; (p = mlock_dereference(*pp, br)) != NULL;
|
|
|
|
|
pp = &p->next) {
|
|
|
|
|
if (p->port != port)
|
|
|
|
|
continue;
|
|
|
|
|
p->flags |= MDB_PG_FLAGS_OFFLOAD;
|
|
|
|
|
}
|
|
|
|
|
out:
|
|
|
|
|
spin_unlock_bh(&br->multicast_lock);
|
|
|
|
|
err:
|
|
|
|
|
kfree(priv);
|
|
|
|
|
}
|
|
|
|
|
|
2017-11-10 06:10:59 +08:00
|
|
|
static void br_mdb_switchdev_host_port(struct net_device *dev,
|
|
|
|
|
struct net_device *lower_dev,
|
|
|
|
|
struct br_mdb_entry *entry, int type)
|
|
|
|
|
{
|
|
|
|
|
struct switchdev_obj_port_mdb mdb = {
|
|
|
|
|
.obj = {
|
|
|
|
|
.id = SWITCHDEV_OBJ_ID_HOST_MDB,
|
|
|
|
|
.flags = SWITCHDEV_F_DEFER,
|
|
|
|
|
},
|
|
|
|
|
.vid = entry->vid,
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
if (entry->addr.proto == htons(ETH_P_IP))
|
|
|
|
|
ip_eth_mc_map(entry->addr.u.ip4, mdb.addr);
|
|
|
|
|
#if IS_ENABLED(CONFIG_IPV6)
|
|
|
|
|
else
|
|
|
|
|
ipv6_eth_mc_map(&entry->addr.u.ip6, mdb.addr);
|
|
|
|
|
#endif
|
|
|
|
|
|
|
|
|
|
mdb.obj.orig_dev = dev;
|
|
|
|
|
switch (type) {
|
|
|
|
|
case RTM_NEWMDB:
|
|
|
|
|
switchdev_port_obj_add(lower_dev, &mdb.obj);
|
|
|
|
|
break;
|
|
|
|
|
case RTM_DELMDB:
|
|
|
|
|
switchdev_port_obj_del(lower_dev, &mdb.obj);
|
|
|
|
|
break;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
static void br_mdb_switchdev_host(struct net_device *dev,
|
|
|
|
|
struct br_mdb_entry *entry, int type)
|
|
|
|
|
{
|
|
|
|
|
struct net_device *lower_dev;
|
|
|
|
|
struct list_head *iter;
|
|
|
|
|
|
|
|
|
|
netdev_for_each_lower_dev(dev, lower_dev, iter)
|
|
|
|
|
br_mdb_switchdev_host_port(dev, lower_dev, entry, type);
|
|
|
|
|
}
|
|
|
|
|
|
2016-04-21 18:52:45 +08:00
|
|
|
static void __br_mdb_notify(struct net_device *dev, struct net_bridge_port *p,
|
|
|
|
|
struct br_mdb_entry *entry, int type)
|
|
|
|
|
{
|
|
|
|
|
struct br_mdb_complete_info *complete_info;
|
2016-01-11 04:06:23 +08:00
|
|
|
struct switchdev_obj_port_mdb mdb = {
|
|
|
|
|
.obj = {
|
|
|
|
|
.id = SWITCHDEV_OBJ_ID_PORT_MDB,
|
|
|
|
|
.flags = SWITCHDEV_F_DEFER,
|
|
|
|
|
},
|
|
|
|
|
.vid = entry->vid,
|
|
|
|
|
};
|
|
|
|
|
struct net_device *port_dev;
|
2012-12-12 06:23:07 +08:00
|
|
|
struct net *net = dev_net(dev);
|
|
|
|
|
struct sk_buff *skb;
|
|
|
|
|
int err = -ENOBUFS;
|
|
|
|
|
|
2016-01-11 04:06:23 +08:00
|
|
|
port_dev = __dev_get_by_index(net, entry->ifindex);
|
|
|
|
|
if (entry->addr.proto == htons(ETH_P_IP))
|
|
|
|
|
ip_eth_mc_map(entry->addr.u.ip4, mdb.addr);
|
|
|
|
|
#if IS_ENABLED(CONFIG_IPV6)
|
|
|
|
|
else
|
|
|
|
|
ipv6_eth_mc_map(&entry->addr.u.ip6, mdb.addr);
|
|
|
|
|
#endif
|
|
|
|
|
|
|
|
|
|
mdb.obj.orig_dev = port_dev;
|
2017-11-10 06:10:58 +08:00
|
|
|
if (p && port_dev && type == RTM_NEWMDB) {
|
2016-04-21 18:52:45 +08:00
|
|
|
complete_info = kmalloc(sizeof(*complete_info), GFP_ATOMIC);
|
|
|
|
|
if (complete_info) {
|
|
|
|
|
complete_info->port = p;
|
|
|
|
|
__mdb_entry_to_br_ip(entry, &complete_info->ip);
|
|
|
|
|
mdb.obj.complete_priv = complete_info;
|
|
|
|
|
mdb.obj.complete = br_mdb_complete;
|
2017-07-12 05:55:12 +08:00
|
|
|
if (switchdev_port_obj_add(port_dev, &mdb.obj))
|
|
|
|
|
kfree(complete_info);
|
2016-04-21 18:52:45 +08:00
|
|
|
}
|
2017-11-10 06:10:58 +08:00
|
|
|
} else if (p && port_dev && type == RTM_DELMDB) {
|
2016-01-11 04:06:23 +08:00
|
|
|
switchdev_port_obj_del(port_dev, &mdb.obj);
|
2016-02-03 16:57:06 +08:00
|
|
|
}
|
2016-01-11 04:06:23 +08:00
|
|
|
|
2017-11-10 06:10:59 +08:00
|
|
|
if (!p)
|
|
|
|
|
br_mdb_switchdev_host(dev, entry, type);
|
|
|
|
|
|
2012-12-12 06:23:07 +08:00
|
|
|
skb = nlmsg_new(rtnl_mdb_nlmsg_size(), GFP_ATOMIC);
|
|
|
|
|
if (!skb)
|
|
|
|
|
goto errout;
|
|
|
|
|
|
|
|
|
|
err = nlmsg_populate_mdb_fill(skb, dev, entry, 0, 0, type, NTF_SELF);
|
|
|
|
|
if (err < 0) {
|
|
|
|
|
kfree_skb(skb);
|
|
|
|
|
goto errout;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
rtnl_notify(skb, net, 0, RTNLGRP_MDB, NULL, GFP_ATOMIC);
|
|
|
|
|
return;
|
|
|
|
|
errout:
|
|
|
|
|
rtnl_set_sk_err(net, RTNLGRP_MDB, err);
|
|
|
|
|
}
|
|
|
|
|
|
2016-04-21 18:52:45 +08:00
|
|
|
void br_mdb_notify(struct net_device *dev, struct net_bridge_port *port,
|
|
|
|
|
struct br_ip *group, int type, u8 flags)
|
2012-12-12 06:23:07 +08:00
|
|
|
{
|
|
|
|
|
struct br_mdb_entry entry;
|
|
|
|
|
|
2013-03-09 13:52:19 +08:00
|
|
|
memset(&entry, 0, sizeof(entry));
|
2017-11-10 06:10:58 +08:00
|
|
|
if (port)
|
|
|
|
|
entry.ifindex = port->dev->ifindex;
|
|
|
|
|
else
|
|
|
|
|
entry.ifindex = dev->ifindex;
|
2016-04-21 18:52:45 +08:00
|
|
|
entry.addr.proto = group->proto;
|
|
|
|
|
entry.addr.u.ip4 = group->u.ip4;
|
2012-12-12 06:23:07 +08:00
|
|
|
#if IS_ENABLED(CONFIG_IPV6)
|
2016-04-21 18:52:45 +08:00
|
|
|
entry.addr.u.ip6 = group->u.ip6;
|
2012-12-12 06:23:07 +08:00
|
|
|
#endif
|
2016-04-21 18:52:45 +08:00
|
|
|
entry.vid = group->vid;
|
|
|
|
|
__mdb_entry_fill_flags(&entry, flags);
|
|
|
|
|
__br_mdb_notify(dev, port, &entry, type);
|
2012-12-12 06:23:07 +08:00
|
|
|
}
|
|
|
|
|
|
2015-07-23 20:00:53 +08:00
|
|
|
static int nlmsg_populate_rtr_fill(struct sk_buff *skb,
|
|
|
|
|
struct net_device *dev,
|
|
|
|
|
int ifindex, u32 pid,
|
|
|
|
|
u32 seq, int type, unsigned int flags)
|
|
|
|
|
{
|
|
|
|
|
struct br_port_msg *bpm;
|
|
|
|
|
struct nlmsghdr *nlh;
|
|
|
|
|
struct nlattr *nest;
|
|
|
|
|
|
|
|
|
|
nlh = nlmsg_put(skb, pid, seq, type, sizeof(*bpm), NLM_F_MULTI);
|
|
|
|
|
if (!nlh)
|
|
|
|
|
return -EMSGSIZE;
|
|
|
|
|
|
|
|
|
|
bpm = nlmsg_data(nlh);
|
|
|
|
|
memset(bpm, 0, sizeof(*bpm));
|
|
|
|
|
bpm->family = AF_BRIDGE;
|
|
|
|
|
bpm->ifindex = dev->ifindex;
|
|
|
|
|
nest = nla_nest_start(skb, MDBA_ROUTER);
|
|
|
|
|
if (!nest)
|
|
|
|
|
goto cancel;
|
|
|
|
|
|
|
|
|
|
if (nla_put_u32(skb, MDBA_ROUTER_PORT, ifindex))
|
|
|
|
|
goto end;
|
|
|
|
|
|
|
|
|
|
nla_nest_end(skb, nest);
|
|
|
|
|
nlmsg_end(skb, nlh);
|
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
|
|
end:
|
|
|
|
|
nla_nest_end(skb, nest);
|
|
|
|
|
cancel:
|
|
|
|
|
nlmsg_cancel(skb, nlh);
|
|
|
|
|
return -EMSGSIZE;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
static inline size_t rtnl_rtr_nlmsg_size(void)
|
|
|
|
|
{
|
|
|
|
|
return NLMSG_ALIGN(sizeof(struct br_port_msg))
|
|
|
|
|
+ nla_total_size(sizeof(__u32));
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
void br_rtr_notify(struct net_device *dev, struct net_bridge_port *port,
|
|
|
|
|
int type)
|
|
|
|
|
{
|
|
|
|
|
struct net *net = dev_net(dev);
|
|
|
|
|
struct sk_buff *skb;
|
|
|
|
|
int err = -ENOBUFS;
|
|
|
|
|
int ifindex;
|
|
|
|
|
|
|
|
|
|
ifindex = port ? port->dev->ifindex : 0;
|
|
|
|
|
skb = nlmsg_new(rtnl_rtr_nlmsg_size(), GFP_ATOMIC);
|
|
|
|
|
if (!skb)
|
|
|
|
|
goto errout;
|
|
|
|
|
|
|
|
|
|
err = nlmsg_populate_rtr_fill(skb, dev, ifindex, 0, 0, type, NTF_SELF);
|
|
|
|
|
if (err < 0) {
|
|
|
|
|
kfree_skb(skb);
|
|
|
|
|
goto errout;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
rtnl_notify(skb, net, 0, RTNLGRP_MDB, NULL, GFP_ATOMIC);
|
|
|
|
|
return;
|
|
|
|
|
|
|
|
|
|
errout:
|
|
|
|
|
rtnl_set_sk_err(net, RTNLGRP_MDB, err);
|
|
|
|
|
}
|
|
|
|
|
|
2012-12-12 06:23:08 +08:00
|
|
|
static bool is_valid_mdb_entry(struct br_mdb_entry *entry)
|
|
|
|
|
{
|
|
|
|
|
if (entry->ifindex == 0)
|
|
|
|
|
return false;
|
|
|
|
|
|
|
|
|
|
if (entry->addr.proto == htons(ETH_P_IP)) {
|
|
|
|
|
if (!ipv4_is_multicast(entry->addr.u.ip4))
|
|
|
|
|
return false;
|
|
|
|
|
if (ipv4_is_local_multicast(entry->addr.u.ip4))
|
|
|
|
|
return false;
|
|
|
|
|
#if IS_ENABLED(CONFIG_IPV6)
|
|
|
|
|
} else if (entry->addr.proto == htons(ETH_P_IPV6)) {
|
2013-09-04 08:13:39 +08:00
|
|
|
if (ipv6_addr_is_ll_all_nodes(&entry->addr.u.ip6))
|
2012-12-12 06:23:08 +08:00
|
|
|
return false;
|
|
|
|
|
#endif
|
|
|
|
|
} else
|
|
|
|
|
return false;
|
2012-12-15 06:09:51 +08:00
|
|
|
if (entry->state != MDB_PERMANENT && entry->state != MDB_TEMPORARY)
|
|
|
|
|
return false;
|
2015-07-10 23:02:08 +08:00
|
|
|
if (entry->vid >= VLAN_VID_MASK)
|
|
|
|
|
return false;
|
2012-12-12 06:23:08 +08:00
|
|
|
|
|
|
|
|
return true;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
static int br_mdb_parse(struct sk_buff *skb, struct nlmsghdr *nlh,
|
|
|
|
|
struct net_device **pdev, struct br_mdb_entry **pentry)
|
|
|
|
|
{
|
|
|
|
|
struct net *net = sock_net(skb->sk);
|
|
|
|
|
struct br_mdb_entry *entry;
|
|
|
|
|
struct br_port_msg *bpm;
|
|
|
|
|
struct nlattr *tb[MDBA_SET_ENTRY_MAX+1];
|
|
|
|
|
struct net_device *dev;
|
|
|
|
|
int err;
|
|
|
|
|
|
2017-04-12 20:34:07 +08:00
|
|
|
err = nlmsg_parse(nlh, sizeof(*bpm), tb, MDBA_SET_ENTRY_MAX, NULL,
|
|
|
|
|
NULL);
|
2012-12-12 06:23:08 +08:00
|
|
|
if (err < 0)
|
|
|
|
|
return err;
|
|
|
|
|
|
|
|
|
|
bpm = nlmsg_data(nlh);
|
|
|
|
|
if (bpm->ifindex == 0) {
|
|
|
|
|
pr_info("PF_BRIDGE: br_mdb_parse() with invalid ifindex\n");
|
|
|
|
|
return -EINVAL;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
dev = __dev_get_by_index(net, bpm->ifindex);
|
|
|
|
|
if (dev == NULL) {
|
|
|
|
|
pr_info("PF_BRIDGE: br_mdb_parse() with unknown ifindex\n");
|
|
|
|
|
return -ENODEV;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
if (!(dev->priv_flags & IFF_EBRIDGE)) {
|
|
|
|
|
pr_info("PF_BRIDGE: br_mdb_parse() with non-bridge\n");
|
|
|
|
|
return -EOPNOTSUPP;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
*pdev = dev;
|
|
|
|
|
|
|
|
|
|
if (!tb[MDBA_SET_ENTRY] ||
|
|
|
|
|
nla_len(tb[MDBA_SET_ENTRY]) != sizeof(struct br_mdb_entry)) {
|
|
|
|
|
pr_info("PF_BRIDGE: br_mdb_parse() with invalid attr\n");
|
|
|
|
|
return -EINVAL;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
entry = nla_data(tb[MDBA_SET_ENTRY]);
|
|
|
|
|
if (!is_valid_mdb_entry(entry)) {
|
|
|
|
|
pr_info("PF_BRIDGE: br_mdb_parse() with invalid entry\n");
|
|
|
|
|
return -EINVAL;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
*pentry = entry;
|
|
|
|
|
return 0;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
static int br_mdb_add_group(struct net_bridge *br, struct net_bridge_port *port,
|
2016-04-21 18:52:45 +08:00
|
|
|
struct br_ip *group, unsigned char state)
|
2012-12-12 06:23:08 +08:00
|
|
|
{
|
|
|
|
|
struct net_bridge_mdb_entry *mp;
|
|
|
|
|
struct net_bridge_port_group *p;
|
|
|
|
|
struct net_bridge_port_group __rcu **pp;
|
2015-07-06 20:53:35 +08:00
|
|
|
unsigned long now = jiffies;
|
2012-12-12 06:23:08 +08:00
|
|
|
int err;
|
|
|
|
|
|
2018-12-05 21:14:24 +08:00
|
|
|
mp = br_mdb_ip_get(br, group);
|
2012-12-12 06:23:08 +08:00
|
|
|
if (!mp) {
|
2018-12-05 21:14:24 +08:00
|
|
|
mp = br_multicast_new_group(br, group);
|
2016-02-10 23:09:02 +08:00
|
|
|
err = PTR_ERR_OR_ZERO(mp);
|
|
|
|
|
if (err)
|
2012-12-12 06:23:08 +08:00
|
|
|
return err;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
for (pp = &mp->ports;
|
|
|
|
|
(p = mlock_dereference(*pp, br)) != NULL;
|
|
|
|
|
pp = &p->next) {
|
|
|
|
|
if (p->port == port)
|
|
|
|
|
return -EEXIST;
|
|
|
|
|
if ((unsigned long)p->port < (unsigned long)port)
|
|
|
|
|
break;
|
|
|
|
|
}
|
|
|
|
|
|
2017-01-22 04:01:32 +08:00
|
|
|
p = br_multicast_new_port_group(port, group, *pp, state, NULL);
|
2012-12-12 06:23:08 +08:00
|
|
|
if (unlikely(!p))
|
|
|
|
|
return -ENOMEM;
|
|
|
|
|
rcu_assign_pointer(*pp, p);
|
2015-07-06 20:53:35 +08:00
|
|
|
if (state == MDB_TEMPORARY)
|
|
|
|
|
mod_timer(&p->timer, now + br->multicast_membership_interval);
|
2012-12-12 06:23:08 +08:00
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
static int __br_mdb_add(struct net *net, struct net_bridge *br,
|
2016-04-21 18:52:45 +08:00
|
|
|
struct br_mdb_entry *entry)
|
2012-12-12 06:23:08 +08:00
|
|
|
{
|
|
|
|
|
struct br_ip ip;
|
|
|
|
|
struct net_device *dev;
|
|
|
|
|
struct net_bridge_port *p;
|
|
|
|
|
int ret;
|
|
|
|
|
|
2018-09-26 22:01:03 +08:00
|
|
|
if (!netif_running(br->dev) || !br_opt_get(br, BROPT_MULTICAST_ENABLED))
|
2012-12-12 06:23:08 +08:00
|
|
|
return -EINVAL;
|
|
|
|
|
|
|
|
|
|
dev = __dev_get_by_index(net, entry->ifindex);
|
|
|
|
|
if (!dev)
|
|
|
|
|
return -ENODEV;
|
|
|
|
|
|
|
|
|
|
p = br_port_get_rtnl(dev);
|
|
|
|
|
if (!p || p->br != br || p->state == BR_STATE_DISABLED)
|
|
|
|
|
return -EINVAL;
|
|
|
|
|
|
2016-04-21 18:52:44 +08:00
|
|
|
__mdb_entry_to_br_ip(entry, &ip);
|
2012-12-12 06:23:08 +08:00
|
|
|
|
|
|
|
|
spin_lock_bh(&br->multicast_lock);
|
2016-04-21 18:52:45 +08:00
|
|
|
ret = br_mdb_add_group(br, p, &ip, entry->state);
|
2012-12-12 06:23:08 +08:00
|
|
|
spin_unlock_bh(&br->multicast_lock);
|
|
|
|
|
return ret;
|
|
|
|
|
}
|
|
|
|
|
|
2017-04-17 00:48:24 +08:00
|
|
|
static int br_mdb_add(struct sk_buff *skb, struct nlmsghdr *nlh,
|
|
|
|
|
struct netlink_ext_ack *extack)
|
2012-12-12 06:23:08 +08:00
|
|
|
{
|
|
|
|
|
struct net *net = sock_net(skb->sk);
|
bridge: vlan: add per-vlan struct and move to rhashtables
This patch changes the bridge vlan implementation to use rhashtables
instead of bitmaps. The main motivation behind this change is that we
need extensible per-vlan structures (both per-port and global) so more
advanced features can be introduced and the vlan support can be
extended. I've tried to break this up but the moment net_port_vlans is
changed and the whole API goes away, thus this is a larger patch.
A few short goals of this patch are:
- Extensible per-vlan structs stored in rhashtables and a sorted list
- Keep user-visible behaviour (compressed vlans etc)
- Keep fastpath ingress/egress logic the same (optimizations to come
later)
Here's a brief list of some of the new features we'd like to introduce:
- per-vlan counters
- vlan ingress/egress mapping
- per-vlan igmp configuration
- vlan priorities
- avoid fdb entries replication (e.g. local fdb scaling issues)
The structure is kept single for both global and per-port entries so to
avoid code duplication where possible and also because we'll soon introduce
"port0 / aka bridge as port" which should simplify things further
(thanks to Vlad for the suggestion!).
Now we have per-vlan global rhashtable (bridge-wide) and per-vlan port
rhashtable, if an entry is added to a port it'll get a pointer to its
global context so it can be quickly accessed later. There's also a
sorted vlan list which is used for stable walks and some user-visible
behaviour such as the vlan ranges, also for error paths.
VLANs are stored in a "vlan group" which currently contains the
rhashtable, sorted vlan list and the number of "real" vlan entries.
A good side-effect of this change is that it resembles how hw keeps
per-vlan data.
One important note after this change is that if a VLAN is being looked up
in the bridge's rhashtable for filtering purposes (or to check if it's an
existing usable entry, not just a global context) then the new helper
br_vlan_should_use() needs to be used if the vlan is found. In case the
lookup is done only with a port's vlan group, then this check can be
skipped.
Things tested so far:
- basic vlan ingress/egress
- pvids
- untagged vlans
- undef CONFIG_BRIDGE_VLAN_FILTERING
- adding/deleting vlans in different scenarios (with/without global ctx,
while transmitting traffic, in ranges etc)
- loading/removing the module while having/adding/deleting vlans
- extracting bridge vlan information (user ABI), compressed requests
- adding/deleting fdbs on vlans
- bridge mac change, promisc mode
- default pvid change
- kmemleak ON during the whole time
Signed-off-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-09-26 01:00:11 +08:00
|
|
|
struct net_bridge_vlan_group *vg;
|
2015-08-03 19:29:16 +08:00
|
|
|
struct net_device *dev, *pdev;
|
2012-12-12 06:23:08 +08:00
|
|
|
struct br_mdb_entry *entry;
|
2015-08-03 19:29:16 +08:00
|
|
|
struct net_bridge_port *p;
|
bridge: vlan: add per-vlan struct and move to rhashtables
This patch changes the bridge vlan implementation to use rhashtables
instead of bitmaps. The main motivation behind this change is that we
need extensible per-vlan structures (both per-port and global) so more
advanced features can be introduced and the vlan support can be
extended. I've tried to break this up but the moment net_port_vlans is
changed and the whole API goes away, thus this is a larger patch.
A few short goals of this patch are:
- Extensible per-vlan structs stored in rhashtables and a sorted list
- Keep user-visible behaviour (compressed vlans etc)
- Keep fastpath ingress/egress logic the same (optimizations to come
later)
Here's a brief list of some of the new features we'd like to introduce:
- per-vlan counters
- vlan ingress/egress mapping
- per-vlan igmp configuration
- vlan priorities
- avoid fdb entries replication (e.g. local fdb scaling issues)
The structure is kept single for both global and per-port entries so to
avoid code duplication where possible and also because we'll soon introduce
"port0 / aka bridge as port" which should simplify things further
(thanks to Vlad for the suggestion!).
Now we have per-vlan global rhashtable (bridge-wide) and per-vlan port
rhashtable, if an entry is added to a port it'll get a pointer to its
global context so it can be quickly accessed later. There's also a
sorted vlan list which is used for stable walks and some user-visible
behaviour such as the vlan ranges, also for error paths.
VLANs are stored in a "vlan group" which currently contains the
rhashtable, sorted vlan list and the number of "real" vlan entries.
A good side-effect of this change is that it resembles how hw keeps
per-vlan data.
One important note after this change is that if a VLAN is being looked up
in the bridge's rhashtable for filtering purposes (or to check if it's an
existing usable entry, not just a global context) then the new helper
br_vlan_should_use() needs to be used if the vlan is found. In case the
lookup is done only with a port's vlan group, then this check can be
skipped.
Things tested so far:
- basic vlan ingress/egress
- pvids
- untagged vlans
- undef CONFIG_BRIDGE_VLAN_FILTERING
- adding/deleting vlans in different scenarios (with/without global ctx,
while transmitting traffic, in ranges etc)
- loading/removing the module while having/adding/deleting vlans
- extracting bridge vlan information (user ABI), compressed requests
- adding/deleting fdbs on vlans
- bridge mac change, promisc mode
- default pvid change
- kmemleak ON during the whole time
Signed-off-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-09-26 01:00:11 +08:00
|
|
|
struct net_bridge_vlan *v;
|
2012-12-12 06:23:08 +08:00
|
|
|
struct net_bridge *br;
|
|
|
|
|
int err;
|
|
|
|
|
|
|
|
|
|
err = br_mdb_parse(skb, nlh, &dev, &entry);
|
|
|
|
|
if (err < 0)
|
|
|
|
|
return err;
|
|
|
|
|
|
|
|
|
|
br = netdev_priv(dev);
|
|
|
|
|
|
2015-08-03 19:29:16 +08:00
|
|
|
/* If vlan filtering is enabled and VLAN is not specified
|
|
|
|
|
* install mdb entry on all vlans configured on the port.
|
|
|
|
|
*/
|
|
|
|
|
pdev = __dev_get_by_index(net, entry->ifindex);
|
|
|
|
|
if (!pdev)
|
|
|
|
|
return -ENODEV;
|
|
|
|
|
|
|
|
|
|
p = br_port_get_rtnl(pdev);
|
|
|
|
|
if (!p || p->br != br || p->state == BR_STATE_DISABLED)
|
|
|
|
|
return -EINVAL;
|
|
|
|
|
|
bridge: vlan: add per-vlan struct and move to rhashtables
This patch changes the bridge vlan implementation to use rhashtables
instead of bitmaps. The main motivation behind this change is that we
need extensible per-vlan structures (both per-port and global) so more
advanced features can be introduced and the vlan support can be
extended. I've tried to break this up but the moment net_port_vlans is
changed and the whole API goes away, thus this is a larger patch.
A few short goals of this patch are:
- Extensible per-vlan structs stored in rhashtables and a sorted list
- Keep user-visible behaviour (compressed vlans etc)
- Keep fastpath ingress/egress logic the same (optimizations to come
later)
Here's a brief list of some of the new features we'd like to introduce:
- per-vlan counters
- vlan ingress/egress mapping
- per-vlan igmp configuration
- vlan priorities
- avoid fdb entries replication (e.g. local fdb scaling issues)
The structure is kept single for both global and per-port entries so to
avoid code duplication where possible and also because we'll soon introduce
"port0 / aka bridge as port" which should simplify things further
(thanks to Vlad for the suggestion!).
Now we have per-vlan global rhashtable (bridge-wide) and per-vlan port
rhashtable, if an entry is added to a port it'll get a pointer to its
global context so it can be quickly accessed later. There's also a
sorted vlan list which is used for stable walks and some user-visible
behaviour such as the vlan ranges, also for error paths.
VLANs are stored in a "vlan group" which currently contains the
rhashtable, sorted vlan list and the number of "real" vlan entries.
A good side-effect of this change is that it resembles how hw keeps
per-vlan data.
One important note after this change is that if a VLAN is being looked up
in the bridge's rhashtable for filtering purposes (or to check if it's an
existing usable entry, not just a global context) then the new helper
br_vlan_should_use() needs to be used if the vlan is found. In case the
lookup is done only with a port's vlan group, then this check can be
skipped.
Things tested so far:
- basic vlan ingress/egress
- pvids
- untagged vlans
- undef CONFIG_BRIDGE_VLAN_FILTERING
- adding/deleting vlans in different scenarios (with/without global ctx,
while transmitting traffic, in ranges etc)
- loading/removing the module while having/adding/deleting vlans
- extracting bridge vlan information (user ABI), compressed requests
- adding/deleting fdbs on vlans
- bridge mac change, promisc mode
- default pvid change
- kmemleak ON during the whole time
Signed-off-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-09-26 01:00:11 +08:00
|
|
|
vg = nbp_vlan_group(p);
|
2017-05-26 14:37:23 +08:00
|
|
|
if (br_vlan_enabled(br->dev) && vg && entry->vid == 0) {
|
bridge: vlan: add per-vlan struct and move to rhashtables
This patch changes the bridge vlan implementation to use rhashtables
instead of bitmaps. The main motivation behind this change is that we
need extensible per-vlan structures (both per-port and global) so more
advanced features can be introduced and the vlan support can be
extended. I've tried to break this up but the moment net_port_vlans is
changed and the whole API goes away, thus this is a larger patch.
A few short goals of this patch are:
- Extensible per-vlan structs stored in rhashtables and a sorted list
- Keep user-visible behaviour (compressed vlans etc)
- Keep fastpath ingress/egress logic the same (optimizations to come
later)
Here's a brief list of some of the new features we'd like to introduce:
- per-vlan counters
- vlan ingress/egress mapping
- per-vlan igmp configuration
- vlan priorities
- avoid fdb entries replication (e.g. local fdb scaling issues)
The structure is kept single for both global and per-port entries so to
avoid code duplication where possible and also because we'll soon introduce
"port0 / aka bridge as port" which should simplify things further
(thanks to Vlad for the suggestion!).
Now we have per-vlan global rhashtable (bridge-wide) and per-vlan port
rhashtable, if an entry is added to a port it'll get a pointer to its
global context so it can be quickly accessed later. There's also a
sorted vlan list which is used for stable walks and some user-visible
behaviour such as the vlan ranges, also for error paths.
VLANs are stored in a "vlan group" which currently contains the
rhashtable, sorted vlan list and the number of "real" vlan entries.
A good side-effect of this change is that it resembles how hw keeps
per-vlan data.
One important note after this change is that if a VLAN is being looked up
in the bridge's rhashtable for filtering purposes (or to check if it's an
existing usable entry, not just a global context) then the new helper
br_vlan_should_use() needs to be used if the vlan is found. In case the
lookup is done only with a port's vlan group, then this check can be
skipped.
Things tested so far:
- basic vlan ingress/egress
- pvids
- untagged vlans
- undef CONFIG_BRIDGE_VLAN_FILTERING
- adding/deleting vlans in different scenarios (with/without global ctx,
while transmitting traffic, in ranges etc)
- loading/removing the module while having/adding/deleting vlans
- extracting bridge vlan information (user ABI), compressed requests
- adding/deleting fdbs on vlans
- bridge mac change, promisc mode
- default pvid change
- kmemleak ON during the whole time
Signed-off-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-09-26 01:00:11 +08:00
|
|
|
list_for_each_entry(v, &vg->vlan_list, vlist) {
|
|
|
|
|
entry->vid = v->vid;
|
2016-04-21 18:52:45 +08:00
|
|
|
err = __br_mdb_add(net, br, entry);
|
2015-08-03 19:29:16 +08:00
|
|
|
if (err)
|
|
|
|
|
break;
|
2016-04-21 18:52:45 +08:00
|
|
|
__br_mdb_notify(dev, p, entry, RTM_NEWMDB);
|
2015-08-03 19:29:16 +08:00
|
|
|
}
|
|
|
|
|
} else {
|
2016-04-21 18:52:45 +08:00
|
|
|
err = __br_mdb_add(net, br, entry);
|
2015-08-03 19:29:16 +08:00
|
|
|
if (!err)
|
2016-04-21 18:52:45 +08:00
|
|
|
__br_mdb_notify(dev, p, entry, RTM_NEWMDB);
|
2015-08-03 19:29:16 +08:00
|
|
|
}
|
|
|
|
|
|
2012-12-12 06:23:08 +08:00
|
|
|
return err;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
static int __br_mdb_del(struct net_bridge *br, struct br_mdb_entry *entry)
|
|
|
|
|
{
|
|
|
|
|
struct net_bridge_mdb_entry *mp;
|
|
|
|
|
struct net_bridge_port_group *p;
|
|
|
|
|
struct net_bridge_port_group __rcu **pp;
|
|
|
|
|
struct br_ip ip;
|
|
|
|
|
int err = -EINVAL;
|
|
|
|
|
|
2018-09-26 22:01:03 +08:00
|
|
|
if (!netif_running(br->dev) || !br_opt_get(br, BROPT_MULTICAST_ENABLED))
|
2012-12-12 06:23:08 +08:00
|
|
|
return -EINVAL;
|
|
|
|
|
|
2016-04-21 18:52:44 +08:00
|
|
|
__mdb_entry_to_br_ip(entry, &ip);
|
2012-12-12 06:23:08 +08:00
|
|
|
|
|
|
|
|
spin_lock_bh(&br->multicast_lock);
|
2018-12-05 21:14:24 +08:00
|
|
|
mp = br_mdb_ip_get(br, &ip);
|
2012-12-12 06:23:08 +08:00
|
|
|
if (!mp)
|
|
|
|
|
goto unlock;
|
|
|
|
|
|
|
|
|
|
for (pp = &mp->ports;
|
|
|
|
|
(p = mlock_dereference(*pp, br)) != NULL;
|
|
|
|
|
pp = &p->next) {
|
|
|
|
|
if (!p->port || p->port->dev->ifindex != entry->ifindex)
|
|
|
|
|
continue;
|
|
|
|
|
|
|
|
|
|
if (p->port->state == BR_STATE_DISABLED)
|
|
|
|
|
goto unlock;
|
|
|
|
|
|
2016-02-03 16:57:05 +08:00
|
|
|
__mdb_entry_fill_flags(entry, p->flags);
|
2012-12-12 06:23:08 +08:00
|
|
|
rcu_assign_pointer(*pp, p->next);
|
|
|
|
|
hlist_del_init(&p->mglist);
|
|
|
|
|
del_timer(&p->timer);
|
|
|
|
|
call_rcu_bh(&p->rcu, br_multicast_free_pg);
|
|
|
|
|
err = 0;
|
|
|
|
|
|
2017-11-10 06:10:57 +08:00
|
|
|
if (!mp->ports && !mp->host_joined &&
|
2012-12-12 06:23:08 +08:00
|
|
|
netif_running(br->dev))
|
|
|
|
|
mod_timer(&mp->timer, jiffies);
|
|
|
|
|
break;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
unlock:
|
|
|
|
|
spin_unlock_bh(&br->multicast_lock);
|
|
|
|
|
return err;
|
|
|
|
|
}
|
|
|
|
|
|
2017-04-17 00:48:24 +08:00
|
|
|
static int br_mdb_del(struct sk_buff *skb, struct nlmsghdr *nlh,
|
|
|
|
|
struct netlink_ext_ack *extack)
|
2012-12-12 06:23:08 +08:00
|
|
|
{
|
2015-08-03 19:29:16 +08:00
|
|
|
struct net *net = sock_net(skb->sk);
|
bridge: vlan: add per-vlan struct and move to rhashtables
This patch changes the bridge vlan implementation to use rhashtables
instead of bitmaps. The main motivation behind this change is that we
need extensible per-vlan structures (both per-port and global) so more
advanced features can be introduced and the vlan support can be
extended. I've tried to break this up but the moment net_port_vlans is
changed and the whole API goes away, thus this is a larger patch.
A few short goals of this patch are:
- Extensible per-vlan structs stored in rhashtables and a sorted list
- Keep user-visible behaviour (compressed vlans etc)
- Keep fastpath ingress/egress logic the same (optimizations to come
later)
Here's a brief list of some of the new features we'd like to introduce:
- per-vlan counters
- vlan ingress/egress mapping
- per-vlan igmp configuration
- vlan priorities
- avoid fdb entries replication (e.g. local fdb scaling issues)
The structure is kept single for both global and per-port entries so to
avoid code duplication where possible and also because we'll soon introduce
"port0 / aka bridge as port" which should simplify things further
(thanks to Vlad for the suggestion!).
Now we have per-vlan global rhashtable (bridge-wide) and per-vlan port
rhashtable, if an entry is added to a port it'll get a pointer to its
global context so it can be quickly accessed later. There's also a
sorted vlan list which is used for stable walks and some user-visible
behaviour such as the vlan ranges, also for error paths.
VLANs are stored in a "vlan group" which currently contains the
rhashtable, sorted vlan list and the number of "real" vlan entries.
A good side-effect of this change is that it resembles how hw keeps
per-vlan data.
One important note after this change is that if a VLAN is being looked up
in the bridge's rhashtable for filtering purposes (or to check if it's an
existing usable entry, not just a global context) then the new helper
br_vlan_should_use() needs to be used if the vlan is found. In case the
lookup is done only with a port's vlan group, then this check can be
skipped.
Things tested so far:
- basic vlan ingress/egress
- pvids
- untagged vlans
- undef CONFIG_BRIDGE_VLAN_FILTERING
- adding/deleting vlans in different scenarios (with/without global ctx,
while transmitting traffic, in ranges etc)
- loading/removing the module while having/adding/deleting vlans
- extracting bridge vlan information (user ABI), compressed requests
- adding/deleting fdbs on vlans
- bridge mac change, promisc mode
- default pvid change
- kmemleak ON during the whole time
Signed-off-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-09-26 01:00:11 +08:00
|
|
|
struct net_bridge_vlan_group *vg;
|
2015-08-03 19:29:16 +08:00
|
|
|
struct net_device *dev, *pdev;
|
2012-12-12 06:23:08 +08:00
|
|
|
struct br_mdb_entry *entry;
|
2015-08-03 19:29:16 +08:00
|
|
|
struct net_bridge_port *p;
|
bridge: vlan: add per-vlan struct and move to rhashtables
This patch changes the bridge vlan implementation to use rhashtables
instead of bitmaps. The main motivation behind this change is that we
need extensible per-vlan structures (both per-port and global) so more
advanced features can be introduced and the vlan support can be
extended. I've tried to break this up but the moment net_port_vlans is
changed and the whole API goes away, thus this is a larger patch.
A few short goals of this patch are:
- Extensible per-vlan structs stored in rhashtables and a sorted list
- Keep user-visible behaviour (compressed vlans etc)
- Keep fastpath ingress/egress logic the same (optimizations to come
later)
Here's a brief list of some of the new features we'd like to introduce:
- per-vlan counters
- vlan ingress/egress mapping
- per-vlan igmp configuration
- vlan priorities
- avoid fdb entries replication (e.g. local fdb scaling issues)
The structure is kept single for both global and per-port entries so to
avoid code duplication where possible and also because we'll soon introduce
"port0 / aka bridge as port" which should simplify things further
(thanks to Vlad for the suggestion!).
Now we have per-vlan global rhashtable (bridge-wide) and per-vlan port
rhashtable, if an entry is added to a port it'll get a pointer to its
global context so it can be quickly accessed later. There's also a
sorted vlan list which is used for stable walks and some user-visible
behaviour such as the vlan ranges, also for error paths.
VLANs are stored in a "vlan group" which currently contains the
rhashtable, sorted vlan list and the number of "real" vlan entries.
A good side-effect of this change is that it resembles how hw keeps
per-vlan data.
One important note after this change is that if a VLAN is being looked up
in the bridge's rhashtable for filtering purposes (or to check if it's an
existing usable entry, not just a global context) then the new helper
br_vlan_should_use() needs to be used if the vlan is found. In case the
lookup is done only with a port's vlan group, then this check can be
skipped.
Things tested so far:
- basic vlan ingress/egress
- pvids
- untagged vlans
- undef CONFIG_BRIDGE_VLAN_FILTERING
- adding/deleting vlans in different scenarios (with/without global ctx,
while transmitting traffic, in ranges etc)
- loading/removing the module while having/adding/deleting vlans
- extracting bridge vlan information (user ABI), compressed requests
- adding/deleting fdbs on vlans
- bridge mac change, promisc mode
- default pvid change
- kmemleak ON during the whole time
Signed-off-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-09-26 01:00:11 +08:00
|
|
|
struct net_bridge_vlan *v;
|
2012-12-12 06:23:08 +08:00
|
|
|
struct net_bridge *br;
|
|
|
|
|
int err;
|
|
|
|
|
|
|
|
|
|
err = br_mdb_parse(skb, nlh, &dev, &entry);
|
|
|
|
|
if (err < 0)
|
|
|
|
|
return err;
|
|
|
|
|
|
|
|
|
|
br = netdev_priv(dev);
|
|
|
|
|
|
2015-08-03 19:29:16 +08:00
|
|
|
/* If vlan filtering is enabled and VLAN is not specified
|
|
|
|
|
* delete mdb entry on all vlans configured on the port.
|
|
|
|
|
*/
|
|
|
|
|
pdev = __dev_get_by_index(net, entry->ifindex);
|
|
|
|
|
if (!pdev)
|
|
|
|
|
return -ENODEV;
|
|
|
|
|
|
|
|
|
|
p = br_port_get_rtnl(pdev);
|
|
|
|
|
if (!p || p->br != br || p->state == BR_STATE_DISABLED)
|
|
|
|
|
return -EINVAL;
|
|
|
|
|
|
bridge: vlan: add per-vlan struct and move to rhashtables
This patch changes the bridge vlan implementation to use rhashtables
instead of bitmaps. The main motivation behind this change is that we
need extensible per-vlan structures (both per-port and global) so more
advanced features can be introduced and the vlan support can be
extended. I've tried to break this up but the moment net_port_vlans is
changed and the whole API goes away, thus this is a larger patch.
A few short goals of this patch are:
- Extensible per-vlan structs stored in rhashtables and a sorted list
- Keep user-visible behaviour (compressed vlans etc)
- Keep fastpath ingress/egress logic the same (optimizations to come
later)
Here's a brief list of some of the new features we'd like to introduce:
- per-vlan counters
- vlan ingress/egress mapping
- per-vlan igmp configuration
- vlan priorities
- avoid fdb entries replication (e.g. local fdb scaling issues)
The structure is kept single for both global and per-port entries so to
avoid code duplication where possible and also because we'll soon introduce
"port0 / aka bridge as port" which should simplify things further
(thanks to Vlad for the suggestion!).
Now we have per-vlan global rhashtable (bridge-wide) and per-vlan port
rhashtable, if an entry is added to a port it'll get a pointer to its
global context so it can be quickly accessed later. There's also a
sorted vlan list which is used for stable walks and some user-visible
behaviour such as the vlan ranges, also for error paths.
VLANs are stored in a "vlan group" which currently contains the
rhashtable, sorted vlan list and the number of "real" vlan entries.
A good side-effect of this change is that it resembles how hw keeps
per-vlan data.
One important note after this change is that if a VLAN is being looked up
in the bridge's rhashtable for filtering purposes (or to check if it's an
existing usable entry, not just a global context) then the new helper
br_vlan_should_use() needs to be used if the vlan is found. In case the
lookup is done only with a port's vlan group, then this check can be
skipped.
Things tested so far:
- basic vlan ingress/egress
- pvids
- untagged vlans
- undef CONFIG_BRIDGE_VLAN_FILTERING
- adding/deleting vlans in different scenarios (with/without global ctx,
while transmitting traffic, in ranges etc)
- loading/removing the module while having/adding/deleting vlans
- extracting bridge vlan information (user ABI), compressed requests
- adding/deleting fdbs on vlans
- bridge mac change, promisc mode
- default pvid change
- kmemleak ON during the whole time
Signed-off-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-09-26 01:00:11 +08:00
|
|
|
vg = nbp_vlan_group(p);
|
2017-05-26 14:37:23 +08:00
|
|
|
if (br_vlan_enabled(br->dev) && vg && entry->vid == 0) {
|
bridge: vlan: add per-vlan struct and move to rhashtables
This patch changes the bridge vlan implementation to use rhashtables
instead of bitmaps. The main motivation behind this change is that we
need extensible per-vlan structures (both per-port and global) so more
advanced features can be introduced and the vlan support can be
extended. I've tried to break this up but the moment net_port_vlans is
changed and the whole API goes away, thus this is a larger patch.
A few short goals of this patch are:
- Extensible per-vlan structs stored in rhashtables and a sorted list
- Keep user-visible behaviour (compressed vlans etc)
- Keep fastpath ingress/egress logic the same (optimizations to come
later)
Here's a brief list of some of the new features we'd like to introduce:
- per-vlan counters
- vlan ingress/egress mapping
- per-vlan igmp configuration
- vlan priorities
- avoid fdb entries replication (e.g. local fdb scaling issues)
The structure is kept single for both global and per-port entries so to
avoid code duplication where possible and also because we'll soon introduce
"port0 / aka bridge as port" which should simplify things further
(thanks to Vlad for the suggestion!).
Now we have per-vlan global rhashtable (bridge-wide) and per-vlan port
rhashtable, if an entry is added to a port it'll get a pointer to its
global context so it can be quickly accessed later. There's also a
sorted vlan list which is used for stable walks and some user-visible
behaviour such as the vlan ranges, also for error paths.
VLANs are stored in a "vlan group" which currently contains the
rhashtable, sorted vlan list and the number of "real" vlan entries.
A good side-effect of this change is that it resembles how hw keeps
per-vlan data.
One important note after this change is that if a VLAN is being looked up
in the bridge's rhashtable for filtering purposes (or to check if it's an
existing usable entry, not just a global context) then the new helper
br_vlan_should_use() needs to be used if the vlan is found. In case the
lookup is done only with a port's vlan group, then this check can be
skipped.
Things tested so far:
- basic vlan ingress/egress
- pvids
- untagged vlans
- undef CONFIG_BRIDGE_VLAN_FILTERING
- adding/deleting vlans in different scenarios (with/without global ctx,
while transmitting traffic, in ranges etc)
- loading/removing the module while having/adding/deleting vlans
- extracting bridge vlan information (user ABI), compressed requests
- adding/deleting fdbs on vlans
- bridge mac change, promisc mode
- default pvid change
- kmemleak ON during the whole time
Signed-off-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-09-26 01:00:11 +08:00
|
|
|
list_for_each_entry(v, &vg->vlan_list, vlist) {
|
|
|
|
|
entry->vid = v->vid;
|
2015-08-03 19:29:16 +08:00
|
|
|
err = __br_mdb_del(br, entry);
|
|
|
|
|
if (!err)
|
2016-04-21 18:52:45 +08:00
|
|
|
__br_mdb_notify(dev, p, entry, RTM_DELMDB);
|
2015-08-03 19:29:16 +08:00
|
|
|
}
|
|
|
|
|
} else {
|
|
|
|
|
err = __br_mdb_del(br, entry);
|
|
|
|
|
if (!err)
|
2016-04-21 18:52:45 +08:00
|
|
|
__br_mdb_notify(dev, p, entry, RTM_DELMDB);
|
2015-08-03 19:29:16 +08:00
|
|
|
}
|
|
|
|
|
|
2012-12-12 06:23:08 +08:00
|
|
|
return err;
|
|
|
|
|
}
|
|
|
|
|
|
2012-12-07 08:04:48 +08:00
|
|
|
void br_mdb_init(void)
|
|
|
|
|
{
|
2017-12-03 04:44:07 +08:00
|
|
|
rtnl_register_module(THIS_MODULE, PF_BRIDGE, RTM_GETMDB, NULL, br_mdb_dump, 0);
|
|
|
|
|
rtnl_register_module(THIS_MODULE, PF_BRIDGE, RTM_NEWMDB, br_mdb_add, NULL, 0);
|
|
|
|
|
rtnl_register_module(THIS_MODULE, PF_BRIDGE, RTM_DELMDB, br_mdb_del, NULL, 0);
|
2012-12-07 08:04:48 +08:00
|
|
|
}
|
2012-12-19 17:13:48 +08:00
|
|
|
|
|
|
|
|
void br_mdb_uninit(void)
|
|
|
|
|
{
|
|
|
|
|
rtnl_unregister(PF_BRIDGE, RTM_GETMDB);
|
|
|
|
|
rtnl_unregister(PF_BRIDGE, RTM_NEWMDB);
|
|
|
|
|
rtnl_unregister(PF_BRIDGE, RTM_DELMDB);
|
|
|
|
|
}
|