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2007-10-10[NL80211]: add netlink interface to cfg80211Johannes Berg6-1/+652
Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-10-10[NET]: Fix race when opening a proc file while a network namespace is exiting.Eric W. Biederman1-1/+5
The problem: proc_net files remember which network namespace the are against but do not remember hold a reference count (as that would pin the network namespace). So we currently have a small window where the reference count on a network namespace may be incremented when opening a /proc file when it has already gone to zero. To fix this introduce maybe_get_net and get_proc_net. maybe_get_net increments the network namespace reference count only if it is greater then zero, ensuring we don't increment a reference count after it has gone to zero. get_proc_net handles all of the magic to go from a proc inode to the network namespace instance and call maybe_get_net on it. PROC_NET the old accessor is removed so that we don't get confused and use the wrong helper function. Then I fix up the callers to use get_proc_net and handle the case case where get_proc_net returns NULL. In that case I return -ENXIO because effectively the network namespace has already gone away so the files we are trying to access don't exist anymore. Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Acked-by: Paul E. McKenney <paulmck@us.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-10-10[NET]: Make the device list and device lookups per namespace.Eric W. Biederman1-9/+29
This patch makes most of the generic device layer network namespace safe. This patch makes dev_base_head a network namespace variable, and then it picks up a few associated variables. The functions: dev_getbyhwaddr dev_getfirsthwbytype dev_get_by_flags dev_get_by_name __dev_get_by_name dev_get_by_index __dev_get_by_index dev_ioctl dev_ethtool dev_load wireless_process_ioctl were modified to take a network namespace argument, and deal with it. vlan_ioctl_set and brioctl_set were modified so their hooks will receive a network namespace argument. So basically anthing in the core of the network stack that was affected to by the change of dev_base was modified to handle multiple network namespaces. The rest of the network stack was simply modified to explicitly use &init_net the initial network namespace. This can be fixed when those components of the network stack are modified to handle multiple network namespaces. For now the ifindex generator is left global. Fundametally ifindex numbers are per namespace, or else we will have corner case problems with migration when we get that far. At the same time there are assumptions in the network stack that the ifindex of a network device won't change. Making the ifindex number global seems a good compromise until the network stack can cope with ifindex changes when you change namespaces, and the like. Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-10-10[NET]: Make /proc/net per network namespaceEric W. Biederman1-1/+2
This patch makes /proc/net per network namespace. It modifies the global variables proc_net and proc_net_stat to be per network namespace. The proc_net file helpers are modified to take a network namespace argument, and all of their callers are fixed to pass &init_net for that argument. This ensures that all of the /proc/net files are only visible and usable in the initial network namespace until the code behind them has been updated to be handle multiple network namespaces. Making /proc/net per namespace is necessary as at least some files in /proc/net depend upon the set of network devices which is per network namespace, and even more files in /proc/net have contents that are relevant to a single network namespace. Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-10-10[WIRELESS] radiotap parser: accept all other fieldsJohannes Berg1-1/+5
This makes the radiotap parser accept all other fields that are currently defined. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2007-10-10[WIRELESS]: Use type safe netlink interfaceThomas Graf1-14/+16
Makes use of the type safe netlink interface and adds a warning if the message is too big for NLMSG_DEFAULT_SIZE to help debug. Signed-off-by: Thomas Graf <tgraf@suug.ch> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2007-09-25[PATCH] cfg80211: fix initialisation if built-inJohannes Berg1-1/+1
When cfg80211 is built into the kernel it needs to init earlier so that device registrations are run after it has initialised. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2007-09-25[PATCH] net/wireless/sysfs.c: Shut up build warningSatyam Sharma1-0/+2
net/wireless/sysfs.c:108: warning: ‘wiphy_uevent’ defined but not used when CONFIG_HOTPLUG=n is because the only usage site of this function is #ifdef'ed as such, so let's #ifdef the definition also. Signed-off-by: Satyam Sharma <satyam@infradead.org> Acked-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2007-07-12[PATCH] cfg80211: Radiotap parserAndy Green2-1/+258
Generic code to walk through the fields in a radiotap header, accounting for nasties like extended "field present" bitfields and alignment rules Signed-off-by: Andy Green <andy@warmcat.com> Signed-off-by: Jiri Benc <jbenc@suse.cz> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2007-06-11[PATCH] cfg80211: fix signed macaddress in sysfsDavid Lamparter1-1/+1
Fix signedness mixup making mac addresses show up strangely (like 00:11:22:33:44:ffffffaa) in /sys/class/ieee80211/*/macaddress. Signed-off-by: David Lamparter <equinox@diac24.net> Acked-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2007-04-26[WIRELESS] cfg80211: Clarify locking comment.Johannes Berg1-4/+15
This patch clarifies the comment about locking in wiphy_unregister. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-26[WIRELESS] cfg80211: Fix locking in wiphy_new.Johannes Berg1-6/+10
This patch fixes the locking in wiphy new. Ingo Oeser <netdev@axxeo.de> noticed that locking in the error case was wrong and also suggested this fix. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-26[WEXT]: Misc code cleanups.Johannes Berg1-17/+11
Just a few things that didn't fit in with the other patches. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-26[WEXT]: Reduce inline abuse.Johannes Berg1-19/+10
This patch removes a bunch of inline abuse from wext. Most functions that were marked inline are only used once so the compiler will inline them anyway, others are used multiple times but there's no requirement for them to be inline since they aren't in any fast paths. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-26[WEXT]: Move EXPORT_SYMBOL statements where they belong.Johannes Berg1-6/+5
EXPORT_SYMBOL statements are supposed to go together with the symbol they're exporting. This patch moves them accordingly. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-26[WEXT]: Cleanup early ioctl call path.Johannes Berg1-47/+26
This patch makes the code in wireless_process_ioctl somewhat more readable. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-26[WEXT]: Remove options.Johannes Berg1-15/+0
This patch kills the two options in wext that are required to be enabled anyway because they influence the userspace API. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-26[WEXT]: Remove dead debug code.Johannes Berg1-92/+0
This patch kills a whole bunch of code that can only ever be used by defining some things in wext.c. Also, the things that are printed are mostly useless since the API is fairly well-tested. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-26[WEXT]: Clean up how wext is called.Johannes Berg1-4/+24
This patch cleans up the call paths from the core code into wext. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-26[WEXT]: Move to net/wirelessJohannes Berg2-0/+1634
This patch moves dev/core/wireless.c to net/wireless/wext.c. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-25[WIRELESS]: Remove wext over netlink.Johannes Berg1-10/+0
As scheduled, this patch removes the pointless wext over netlink code. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-25[WIRELESS] cfg80211: New wireless config infrastructure.Johannes Berg6-1/+353
This patch creates the core cfg80211 code along with some sysfs bits. This is a stripped down version to allow mac80211 to function, but doesn't include any configuration yet except for creating and removing virtual interfaces. This patch includes the nl80211 header file but it only contains the interface types which the cfg80211 interface for creating virtual interfaces relies on. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-25[WIRELESS]: Refactor wireless Kconfig.Johannes Berg2-0/+24
This patch refactors the wireless Kconfig all over and already introduces net/wireless/Kconfig with just the WEXT bit for now, the cfg80211 patch will add to that as well. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>

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