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2009-02-05netlink: change return-value logic of netlink_broadcast()Pablo Neira Ayuso3-16/+13
Currently, netlink_broadcast() reports errors to the caller if no messages at all were delivered: 1) If, at least, one message has been delivered correctly, returns 0. 2) Otherwise, if no messages at all were delivered due to skb_clone() failure, return -ENOBUFS. 3) Otherwise, if there are no listeners, return -ESRCH. With this patch, the caller knows if the delivery of any of the messages to the listeners have failed: 1) If it fails to deliver any message (for whatever reason), return -ENOBUFS. 2) Otherwise, if all messages were delivered OK, returns 0. 3) Otherwise, if no listeners, return -ESRCH. In the current ctnetlink code and in Netfilter in general, we can add reliable logging and connection tracking event delivery by dropping the packets whose events were not successfully delivered over Netlink. Of course, this option would be settable via /proc as this approach reduces performance (in terms of filtered connections per seconds by a stateful firewall) but providing reliable logging and event delivery (for conntrackd) in return. This patch also changes some clients of netlink_broadcast() that may report ENOBUFS errors via printk. This error handling is not of any help. Instead, the userspace daemons that are listening to those netlink messages should resync themselves with the kernel-side if they hit ENOBUFS. BTW, netlink_broadcast() clients include those that call cn_netlink_send(), nlmsg_multicast() and genlmsg_multicast() since they internally call netlink_broadcast() and return its error value. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-02-05gro: Fix frag_list merging on imprecisely split packetsHerbert Xu2-1/+13
The previous fix ad0f9904444de1309dedd2b9e365cae8af77d9b1 (gro: Fix handling of imprecisely split packets) only fixed the case of frags merging, frag_list merging in the same circumstances were still broken. In particular, the packet headers end up in the data stream. This patch fixes this plus another issue where an imprecisely split packet header may be read incorrectly (this is mostly harmless since it'll simply cause the packet to not match and be rejected for GRO). Thanks to Emil Tantilov and Jeff Kirsher for helping to track this down. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-02-04net: Reexport sock_alloc_send_pskbHerbert Xu1-4/+4
The function sock_alloc_send_pskb is completely useless if not exported since most of the code in it won't be used as is. In fact, this code has already been duplicated in the tun driver. Now that we need accounting in the tun driver, we can in fact use this function as is. So this patch marks it for export again. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-02-04net: Partially allow skb destructors to be used on receive pathHerbert Xu2-0/+3
As it currently stands, skb destructors are forbidden on the receive path because the protocol end-points will overwrite any existing destructor with their own. This is the reason why we have to call skb_orphan in the loopback driver before we reinject the packet back into the stack, thus creating a period during which loopback traffic isn't charged to any socket. With virtualisation, we have a similar problem in that traffic is reinjected into the stack without being associated with any socket entity, thus providing no natural congestion push-back for those poor folks still stuck with UDP. Now had we been consistent in telling them that UDP simply has no congestion feedback, I could just fob them off. Unfortunately, we appear to have gone to some length in catering for this on the standard UDP path, with skb/socket accounting so that has created a very unhealthy dependency. Alas habits are difficult to break out of, so we may just have to allow skb destructors on the receive path. It turns out that making skb destructors useable on the receive path isn't as easy as it seems. For instance, simply adding skb_orphan to skb_set_owner_r isn't enough. This is because we assume all over the IP stack that skb->sk is an IP socket if present. The new transparent proxy code goes one step further and assumes that skb->sk is the receiving socket if present. Now all of this can be dealt with by adding simple checks such as only treating skb->sk as an IP socket if skb->sk->sk_family matches. However, it turns out that for bridging at least we don't need to do all of this work. This is of interest because most virtualisation setups use bridging so we don't actually go through the IP stack on the host (with the exception of our old nemesis the bridge netfilter, but that's easily taken care of). So this patch simply adds skb_orphan to the point just before we enter the IP stack, but after we've gone through the bridge on the receive path. It also adds an skb_orphan to the one place in netfilter that touches skb->sk/skb->destructor, that is, tproxy. One word of caution, because of the internal code structure, anyone wishing to deploy this must use skb_set_owner_w as opposed to skb_set_owner_r since many functions that create a new skb from an existing one will invoke skb_set_owner_w on the new skb. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-02-04Merge branch 'master' of /home/davem/src/GIT/linux-2.6/David S. Miller1-1/+1
2009-02-03sunrpc: fix rdma dependenciesRandy Dunlap1-1/+1
Fix sunrpc/rdma build dependencies. Survives 12 build combinations of INET, IPV6, SUNRPC, INFINIBAND, and INFINIBAND_ADDR_TRANS. ERROR: "rdma_destroy_id" [net/sunrpc/xprtrdma/xprtrdma.ko] undefined! ERROR: "rdma_connect" [net/sunrpc/xprtrdma/xprtrdma.ko] undefined! ERROR: "rdma_destroy_qp" [net/sunrpc/xprtrdma/xprtrdma.ko] undefined! ERROR: "rdma_create_id" [net/sunrpc/xprtrdma/xprtrdma.ko] undefined! ERROR: "rdma_create_qp" [net/sunrpc/xprtrdma/xprtrdma.ko] undefined! ERROR: "rdma_resolve_route" [net/sunrpc/xprtrdma/xprtrdma.ko] undefined! ERROR: "rdma_disconnect" [net/sunrpc/xprtrdma/xprtrdma.ko] undefined! ERROR: "rdma_resolve_addr" [net/sunrpc/xprtrdma/xprtrdma.ko] undefined! ERROR: "rdma_accept" [net/sunrpc/xprtrdma/svcrdma.ko] undefined! ERROR: "rdma_destroy_id" [net/sunrpc/xprtrdma/svcrdma.ko] undefined! ERROR: "rdma_listen" [net/sunrpc/xprtrdma/svcrdma.ko] undefined! ERROR: "rdma_create_id" [net/sunrpc/xprtrdma/svcrdma.ko] undefined! ERROR: "rdma_create_qp" [net/sunrpc/xprtrdma/svcrdma.ko] undefined! ERROR: "rdma_bind_addr" [net/sunrpc/xprtrdma/svcrdma.ko] undefined! ERROR: "rdma_disconnect" [net/sunrpc/xprtrdma/svcrdma.ko] undefined! Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-02-03Merge branch 'master' of ↵David S. Miller35-395/+2075
git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next-2.6
2009-02-03Merge branch 'master' of ↵David S. Miller4-8/+10
master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6 Conflicts: drivers/net/Kconfig
2009-02-02Merge branch 'master' of ↵David S. Miller1-3/+2
master.kernel.org:/pub/scm/linux/kernel/git/torvalds/linux-2.6
2009-02-02udp: increments sk_drops in __udp_queue_rcv_skb()Eric Dumazet1-1/+3
Commit 93821778def10ec1e69aa3ac10adee975dad4ff3 (udp: Fix rcv socket locking) accidentally removed sk_drops increments for UDP IPV4 sockets. This field can be used to detect incorrect sizing of socket receive buffers. Signed-off-by: Eric Dumazet <dada1@cosmosbay.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-02-01ipv4: Delete redundant sk_family assignmentHerbert Xu1-1/+0
sk_alloc now sets sk_family so this is redundant. In fact it caught my eye because sock_init_data already uses sk_family so this is too late anyway. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-02-01net: move bsockets outside of read only beginning of struct inet_hashinfoEric Dumazet2-3/+4
And switch bsockets to atomic_t since it might be changed in parallel. Signed-off-by: Eric Dumazet <dada1@cosmosbay.com> Acked-by: Evgeniy Polyakov <zbr@ioremap.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-02-01net: packet socket packet_lookup_frame fixSebastiano Di Paola1-4/+4
packet_lookup_frames() fails to get user frame if current frame header status contains extra flags. This is due to the wrong assumption on the operators precedence during frame status tests. Fixed by forcing the right operators precedence order with explicit brackets. Signed-off-by: Paolo Abeni <paolo.abeni@gmail.com> Signed-off-by: Sebastiano Di Paola <sebastiano.dipaola@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-02-01inet: Fix virt-manager regression due to bind(0) changes.Stephen Hemminger1-1/+2
From: Stephen Hemminger <shemminger@vyatta.com> Fix regression introduced by a9d8f9110d7e953c2f2b521087a4179677843c2a ("inet: Allowing more than 64k connections and heavily optimize bind(0) time.") Based upon initial patches and feedback from Evegniy Polyakov and Eric Dumazet. From Eric Dumazet: -------------------- Also there might be a problem at line 175 if (sk->sk_reuse && sk->sk_state != TCP_LISTEN && --attempts >= 0) { spin_unlock(&head->lock); goto again; If we entered inet_csk_get_port() with a non null snum, we can "goto again" while it was not expected. -------------------- Signed-off-by: David S. Miller <davem@davemloft.net>
2009-02-01gro: Fix handling of imprecisely split packetsHerbert Xu1-6/+10
The commit 89a1b249edcf9be884e71f92df84d48355c576aa (gro: Avoid copying headers of unmerged packets) only worked for packets which are either completely linear, completely non-linear, or packets which exactly split at the boundary between headers and payload. Anything else would cause bits in the header to go missing if the packet is held by GRO. This may have broken drivers such as ixgbe. This patch fixes the places that assumed or only worked with the above cases. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-02-01pkt_sched: sch_htb: Use workqueue to schedule after too many events.Jarek Poplawski1-5/+21
Patrick McHardy <kaber@trash.net> suggested using a workqueue instead of hrtimers to trigger netif_schedule() when there is a problem with setting exact time of this event: 'The differnce - yeah, it shouldn't make much, mainly wake up the qdisc earlier (but not too early) after "too many events" occured _and_ no further enqueue events wake up the qdisc anyways.' Signed-off-by: Jarek Poplawski <jarkao2@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-02-01pkt_sched: sch_htb: Warn on too many events.Jarek Poplawski1-0/+7
Let's get some info on possible config problems. This patch brings back an old warning, but is printed only once now. With feedback from Patrick McHardy <kaber@trash.net> Signed-off-by: Jarek Poplawski <jarkao2@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-02-01pkt_sched: sch_hfsc: sch_htb: Add non-work-conserving warning handler.Jarek Poplawski3-12/+14
Patrick McHardy <kaber@trash.net> suggested: > How about making this flag and the warning message (in a out-of-line > function) globally available? Other qdiscs (f.i. HFSC) can't deal with > inner non-work-conserving qdiscs as well. This patch uses qdisc->flags field of "suspected" child qdisc. Signed-off-by: Jarek Poplawski <jarkao2@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-02-01net: add ARP notify option for devicesStephen Hemminger1-0/+9
This adds another inet device option to enable gratuitous ARP when device is brought up or address change. This is handy for clusters or virtualization. Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org> Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-02-01net: replace uses of __constant_{endian}Harvey Harrison35-50/+50
Base versions handle constant folding now. Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-02-01net: Optimize memory usage when splicing from sockets.Jarek Poplawski1-11/+36
The recent fix of data corruption when splicing from sockets uses memory very inefficiently allocating a new page to copy each chunk of linear part of skb. This patch uses the same page until it's full (almost) by caching the page in sk_sndmsg_page field. With changes from David S. Miller <davem@davemloft.net> Signed-off-by: Jarek Poplawski <jarkao2@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-01-31Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6Linus Torvalds2-2/+8
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: igb: fix link reporting when using sgmii igb: prevent skb_over panic w/ mtu smaller than 1K igb: Fix DCA errors and do not use context index for 82576 ipv6: compile fix for ip6mr.c packet: Avoid lock_sock in mmap handler sfc: Replace stats_enabled flag with a disable count sfc: SFX7101/SFT9001: Fix AN advertisements sfc: SFT9001: Always enable XNP exchange on SFT9001 rev B sfc: Update board info for hardware monitor on SFN4111T-R5 and later sfc: Test for PHYXS faults whenever we cannot test link state bits sfc: Reinitialise the PHY completely in case of a PHY or NIC reset sfc: Fix post-reset MAC selection sfc: SFN4111T: Fix GPIO sharing between I2C and FLASH_CFG_1 sfc: SFT9001: Fix speed reporting in 1G PHY loopback sfc: SFX7101: Remove workaround for bad link training sfc: SFT9001: Enable robust link training sky2: fix hard hang with netconsoling and iface going up
2009-01-31ipv6: compile fix for ip6mr.cDave Jones1-0/+1
net/ipv6/ip6mr.c: In function 'pim6_rcv': net/ipv6/ip6mr.c:368: error: implicit declaration of function 'csum_ipv6_magic' Signed-off-by: Dave Jones <davej@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-01-30Merge branch 'master' of ↵David S. Miller13-62/+115
master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6 Conflicts: drivers/net/e1000/e1000_main.c
2009-01-30packet: Avoid lock_sock in mmap handlerHerbert Xu1-2/+7
As the mmap handler gets called under mmap_sem, and we may grab mmap_sem elsewhere under the socket lock to access user data, we should avoid grabbing the socket lock in the mmap handler. Since the only thing we care about in the mmap handler is for pg_vec* to be invariant, i.e., to exclude packet_set_ring, we can achieve this by simply using a new mutex. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Tested-by: Martin MOKREJŠ <mmokrejs@ribosome.natur.cuni.cz> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-01-30mac80211: Cancel the dynamic ps timer in ioctl_siwpower.Vivek Natarajan1-0/+2
If the dynamic power save timer has been started before the power save is disabled using iwconfig, we fail to cancel the timer. Hence cancel it while disabling power save. Signed-off-by: Vivek Natarajan <vnatarajan@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-01-30Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6Linus Torvalds12-60/+108
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: (29 commits) tulip: fix 21142 with 10Mbps without negotiation drivers/net/skfp: if !capable(CAP_NET_ADMIN): inverted logic gianfar: Fix Wake-on-LAN support smsc911x: timeout reaches -1 smsc9420: fix interrupt signalling test failures ucc_geth: Change uec phy id to the same format as gianfar's wimax: fix build issue when debugfs is disabled netxen: fix memory leak in drivers/net/netxen_nic_init.c tun: Add some missing TUN compat ioctl translations. ipv4: fix infinite retry loop in IP-Config net: update documentation ip aliases net: Fix OOPS in skb_seq_read(). net: Fix frag_list handling in skb_seq_read netxen: revert jumbo ringsize ath5k: fix locking in ath5k_config cfg80211: print correct intersected regulatory domain cfg80211: Fix sanity check on 5 GHz when processing country IE iwlwifi: fix kernel oops when ucode DMA memory allocation failure rtl8187: Fix error in setting OFDM power settings for RTL8187L mac80211: remove Michael Wu as maintainer ...
2009-01-29wimax: fix build issue when debugfs is disabledInaky Perez-Gonzalez2-11/+13
As reported by Toralf Förster and Randy Dunlap. - http://linuxwimax.org/pipermail/wimax/2009-January/000460.html - http://lkml.org/lkml/2009/1/29/279 The definitions needed for the wimax stack and i2400m driver debug infrastructure was, by mistake, compiled depending on CONFIG_DEBUG_FS (by them being placed in the debugfs.c files); thus the build broke in 2.6.29-rc3 when debugging was enabled (CONFIG_WIMAX_DEBUG) and DEBUG_FS was disabled. These definitions are always needed if debug is enabled at compile time (independently of DEBUG_FS being or not enabled), so moving them to a file that is always compiled fixes the issue. Signed-off-by: Inaky Perez-Gonzalez <inaky@linux.intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-01-29gro: Open-code memcpy in napi_fraginfo_skbHerbert Xu1-1/+9
This patch optimises napi_fraginfo_skb to only copy the bits necessary. We also open-code the memcpy so that the alignment information is always available to gcc. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-01-29gro: Do not merge paged packets into frag_listHerbert Xu1-3/+5
gro: Do not merge paged packets into frag_list Bigger is not always better :) It was easy to continue to merged packets into frag_list after the page array is full. However, this turns out to be worse than LRO because frag_list is a much less efficient form of storage than the page array. So we're better off stopping the merge and starting a new entry with an empty page array. In future we can optimise this further by doing frag_list merging but making sure that we continue to fill in the page array. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-01-29gro: Avoid copying headers of unmerged packetsHerbert Xu8-44/+111
Unfortunately simplicity isn't always the best. The fraginfo interface turned out to be suboptimal. The problem was quite obvious. For every packet, we have to copy the headers from the frags structure into skb->head, even though for 99% of the packets this part is immediately thrown away after the merge. LRO didn't have this problem because it directly read the headers from the frags structure. This patch attempts to address this by creating an interface that allows GRO to access the headers in the first frag without having to copy it. Because all drivers that use frags place the headers in the first frag this optimisation should be enough. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-01-29gro: Move common completion code into helpersHerbert Xu2-59/+56
Currently VLAN still has a bit of common code handling the aftermath of GRO that's shared with the common path. This patch moves them into shared helpers to reduce code duplication. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-01-29ipv4: fix infinite retry loop in IP-ConfigBenjamin Zores1-3/+3
Signed-off-by: Benjamin Zores <benjamin.zores@alcatel-lucent.fr> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-01-29net: Fix OOPS in skb_seq_read().Shyam Iyer1-5/+5
It oopsd for me in skb_seq_read. addr2line said it was linux-2.6/net/core/skbuff.c:2228, which is this line: while (st->frag_idx < skb_shinfo(st->cur_skb)->nr_frags) { I added some printks in there and it looks like we hit this: } else if (st->root_skb == st->cur_skb && skb_shinfo(st->root_skb)->frag_list) { st->cur_skb = skb_shinfo(st->root_skb)->frag_list; st->frag_idx = 0; goto next_skb; } Actually I did some testing and added a few printks and found that the st->cur_skb->data was 0 and hence the ptr used by iscsi_tcp was null. This caused the kernel panic. if (abs_offset < block_limit) { - *data = st->cur_skb->data + abs_offset; + *data = st->cur_skb->data + (abs_offset - st->stepped_offset); I enabled the debug_tcp and with a few printks found that the code did not go to the next_skb label and could find that the sequence being followed was this - It hit this if condition - if (st->cur_skb->next) { st->cur_skb = st->cur_skb->next; st->frag_idx = 0; goto next_skb; And so, now the st pointer is shifted to the next skb whereas actually it should have hit the second else if first since the data is in the frag_list. else if (st->root_skb == st->cur_skb && skb_shinfo(st->root_skb)->frag_list) { st->cur_skb = skb_shinfo(st->root_skb)->frag_list; goto next_skb; } Reversing the two conditions the attached patch fixes the issue for me on top of Herbert's patches. Signed-off-by: Shyam Iyer <shyam_iyer@dell.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-01-29net: Fix frag_list handling in skb_seq_readHerbert Xu1-2/+3
The frag_list handling was broken in skb_seq_read: 1) We didn't add the stepped offset when looking at the head are of fragments other than the first. 2) We didn't take the stepped offset away when setting the data pointer in the head area. 3) The frag index wasn't reset. This patch fixes both issues. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-01-29Merge branch 'master' of ↵David S. Miller1-12/+20
git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-2.6
2009-01-29mac80211: don't try to powersave/config disabled interfacesJohannes Berg1-0/+6
Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-01-29cfg80211: do not pass -EALREADY to userspace on regdomain change requestLuis R. Rodriguez1-0/+5
If the regulatory domain is already set it is technically not an error so do not pass an errno to userspace. Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-01-29mac80211: Generic TSF debuggingAlina Friedrichsen1-3/+52
This patch enables low-level driver independent debugging of the TSF and remove the driver specific things of ath5k and ath9k from the debugfs. Signed-off-by: Alina Friedrichsen <x-alina@gmx.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-01-29mac80211: add interface list lockJohannes Berg4-2/+38
Using only the RTNL has a number of problems, most notably that ieee80211_iterate_active_interfaces() and other interface list traversals cannot be done from the internal workqueue because it needs to be flushed under the RTNL. This patch introduces a new mutex that protects the interface list against modifications. A more detailed explanation is part of the code change. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-01-29mac80211: flush workqueue a second time in suspend()Bob Copeland1-0/+3
Drivers can theoretically queue more work in one of their callbacks from mac80211 suspend, so let's flush it once more to be on the safe side, just before calling ->stop(). Signed-off-by: Bob Copeland <me@bobcopeland.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-01-29mac80211: change workqueue back to non-freezeableBob Copeland1-1/+1
"mac80211: make workqueue freezable" made the mac80211 workqueue freezeable to prevent us from doing any work after the driver went away. This was fine before mac80211 had any suspend support. However, now we want to flush this workqueue in suspend(). Because the thread for a freezeable workqueue is stopped before the device class suspend() is called, flush_workqueue() will hang in the suspend-to-disk case. Converting it back to a non-freezeable queue will keep suspend from hanging. Moreover, since we flush the workqueue under RTNL and userspace is stopped, there won't be any new work in the workqueue until after resume. Thus we still don't have to worry about pinging the AP without hardware. Signed-off-by: Bob Copeland <me@bobcopeland.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-01-29mac80211: Fixed BSSID handling revisitedAlina Friedrichsen1-39/+33
This patch cleanup the fixed BSSID handling, that ieee80211_sta_set_bssid() works like ieee80211_sta_set_ssid(). So that the BSSID is only a second selection criterion besides the SSID. This allows us to create new IBSS networks with fixed BSSIDs, which was broken before. In the second version of this patch the handling of the stupid merges to the same BSSID is moved out to get reworked into an other patch. And this version hopefully solves the problems with some low-level drivers and re-adds the config BSSID warning to help debugging the low-level drivers. Much thanks to all who have helped testing! :) Signed-off-by: Alina Friedrichsen <x-alina@gmx.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-01-29mac80211: Read the TSF via debugfsAlina Friedrichsen2-0/+5
This patch adds an low-level driver independent entry to read the TSF value into the debugfs of mac80211. This makes debugging the IBSS handling of wifi drivers easier. Signed-off-by: Alina Friedrichsen <x-alina@gmx.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-01-29cfg80211: allow users to help a driver's complianceLuis R. Rodriguez1-1/+2
Let users be more compliant if so desired. Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-01-29mac80211: allow mac80211 drivers to get to struct ieee80211_hw from wiphyLuis R. Rodriguez1-0/+9
If a driver is given a wiphy and it wants to get to its private mac80211 driver area it can use wiphy_to_ieee80211_hw() to get first to its ieee80211_hw and then access the private structure via hw->priv. The wiphy_priv() is already being used internally by mac80211 and drivers should not use this. This can be helpful in a drivers reg_notifier(). Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com> Acked-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-01-29cfg80211: Allow for strict regulatory settingsLuis R. Rodriguez1-1/+27
This allows drivers to request strict regulatory settings to be applied to its devices. This is desirable for devices where proper calibration and compliance can only be gauranteed for for the device's programmed regulatory domain. Regulatory domain settings will be ignored until the device's own regulatory domain is properly configured. If no regulatory domain is received only the world regulatory domain will be applied -- if OLD_REG (default to "US") is not enabled. If OLD_REG behaviour is not acceptable to drivers they must update their wiphy with a custom reuglatory prior to wiphy registration. Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-01-29cfg80211: pass more detailed regulatory request information on reg_notifier()Luis R. Rodriguez2-40/+1
Drivers may need more information than just who set the last regulatory domain, as such lets just pass the last regulatory_request receipt. To do this we need to move out to headers struct regulatory_request, and enum environment_cap. While at it lets add documentation for enum environment_cap. Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-01-29cfg80211: move check for ignore_reg_update() on wiphy_update_regulatory()Luis R. Rodriguez1-2/+4
This ensures that the initial REGDOM_SET_BY_CORE upon wiphy registration respects the wiphy->custom_regulatory setting. Without this and if OLD_REG is disabled (which will be default soon as we remove it) the wiphy->custom_regulatory is simply ignored. Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com> Acked-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-01-29cfg80211: rename fw_handles_regulatory to custom_regulatoryLuis R. Rodriguez1-1/+1
Drivers without firmware can also have custom regulatory maps which do not map to a specific ISO / IEC alpha2 country code. Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>