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* dsa/mv88e6060: support nonzero mii base addressPeter Korsgaard2011-03-081-3/+4
| | | | | | | | | | The mv88e6060 uses either the lower 16 or upper 16 mii addresses, depending on the value of the EE_CLK/ADDR4 pin. Support both configurations by using the sw_addr setting as base address. Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk> Acked-by: Lennert Buytenhek <buytenh@wantstofly.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* Merge branch 'master' of ↵David S. Miller2011-03-081-0/+14
|\ | | | | | | master.kernel.org:/pub/scm/linux/kernel/git/jkirsher/net-next-2.6
| * vlan: add support to ndo_fcoe_ddp_target()Yi Zou2011-03-071-0/+14
| | | | | | | | | | | | | | | | Add the new target ddp offload support ndo_fcoe_ddp_target(). Signed-off-by: Yi Zou <yi.zou@intel.com> Signed-off-by: Kiran Patil <kiran.patil@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
* | ipv4: Fix scope value used in route src-address caching.David S. Miller2011-03-081-2/+3
| | | | | | | | | | | | | | We have to use cfg->fc_scope not the final nh_scope value. Reported-by: Julian Anastasov <ja@ssi.bg> Signed-off-by: David S. Miller <davem@davemloft.net>
* | ipv4: Cache source address in nexthop entries.David S. Miller2011-03-072-7/+26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When doing output route lookups, we have to select the source address if the user has not specified an explicit one. First, if the route has an explicit preferred source address specified, then we use that. Otherwise we search the route's outgoing interface for a suitable address. This search can be precomputed and cached at route insertion time. The only missing part is that we have to refresh this precomputed value any time addresses are added or removed from the interface, and this is accomplished by fib_update_nh_saddrs(). Signed-off-by: David S. Miller <davem@davemloft.net>
* | af_unix: remove unused struct sockaddr_un cruftHagen Paul Pfeifer2011-03-071-2/+0
| | | | | | | | | | Signed-off-by: Hagen Paul Pfeifer <hagen@jauu.net> Signed-off-by: David S. Miller <davem@davemloft.net>
* | sctp: several declared/set but unused fixesHagen Paul Pfeifer2011-03-076-18/+1
| | | | | | | | | | Signed-off-by: Hagen Paul Pfeifer <hagen@jauu.net> Signed-off-by: David S. Miller <davem@davemloft.net>
* | af_packet: struct socket declared/assigned but unusedHagen Paul Pfeifer2011-03-071-3/+0
| | | | | | | | | | Signed-off-by: Hagen Paul Pfeifer <hagen@jauu.net> Signed-off-by: David S. Miller <davem@davemloft.net>
* | mcast: net_device dev not usedHagen Paul Pfeifer2011-03-071-6/+0
|/ | | | | | | | ip6_mc_source(), ip6_mc_msfilter() as well as ip6_mc_msfget() declare and assign dev but do not use the variable afterwards. Signed-off-by: Hagen Paul Pfeifer <hagen@jauu.net> Signed-off-by: David S. Miller <davem@davemloft.net>
* net: allow handlers to be processed for orig_devJiri Pirko2011-03-071-1/+2
| | | | | | | | | | This was there before, I forgot about this. Allows deliveries to ptype_base handlers registered for orig_dev. I presume this is still desired. Signed-off-by: Jiri Pirko <jpirko@redhat.com> Reviewed-by: Nicolas de Pesloüan <nicolas.2p.debian@free.fr> Signed-off-by: David S. Miller <davem@davemloft.net>
* ipv4: Inline fib_semantic_match into check_leafDavid S. Miller2011-03-073-75/+51
| | | | | | | This elimiates a lot of pure overhead due to parameter passing. Signed-off-by: David S. Miller <davem@davemloft.net>
* ipv4: Validate route entry type at insert instead of every lookup.David S. Miller2011-03-071-26/+28
| | | | | | | | | | | | | | | fib_semantic_match() requires that if the type doesn't signal an automatic error, it must be of type RTN_UNICAST, RTN_LOCAL, RTN_BROADCAST, RTN_ANYCAST, or RTN_MULTICAST. Checking this every route lookup is pointless work. Instead validate it during route insertion, via fib_create_info(). Also, there was nothing making sure the type value was less than RTN_MAX, so add that missing check while we're here. Signed-off-by: David S. Miller <davem@davemloft.net>
* Merge branch 'batman-adv/next' of git://git.open-mesh.org/ecsv/linux-mergeDavid S. Miller2011-03-0724-1232/+1634
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| * batman-adv: Disallow regular interface as mesh deviceSven Eckelmann2011-03-053-12/+36
| | | | | | | | | | | | | | | | | | | | | | When trying to associate a net_device with another net_device which already exists, batman-adv assumes that this interface is a fully initialized batman mesh interface without checking it. The behaviour when accessing data behind netdev_priv of a random net_device is undefined and potentially dangerous. Reported-by: Linus Lüssing <linus.luessing@ascom.ch> Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
| * batman-adv: Remove unused hdr_size variable in route_unicast_packet()Linus Lüssing2011-03-053-7/+5
| | | | | | | | | | Signed-off-by: Linus Lüssing <linus.luessing@ascom.ch> Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
| * batman-adv: rename batman_if struct to hard_ifaceMarek Lindner2011-03-0518-330/+335
| | | | | | | | Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
| * batman-adv: rename global if_list to hardif_listMarek Lindner2011-03-056-22/+22
| | | | | | | | | | | | | | | | Batman-adv works with "hard interfaces" as well as "soft interfaces". The new name should better make clear which kind of interfaces this list stores. Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
| * batman-adv: remove orig_hash spinlockMarek Lindner2011-03-057-148/+38
| | | | | | | | Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
| * batman-adv: increase refcount in create_neighbor to be consistentMarek Lindner2011-03-052-37/+30
| | | | | | | | Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
| * batman-adv: Correct rcu refcounting for orig_nodeMarek Lindner2011-03-059-36/+49
| | | | | | | | | | | | | | | | | | | | | | It might be possible that 2 threads access the same data in the same rcu grace period. The first thread calls call_rcu() to decrement the refcount and free the data while the second thread increases the refcount to use the data. To avoid this race condition all refcount operations have to be atomic. Reported-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
| * batman-adv: remove extra layer between hash and hash element - hash bucketMarek Lindner2011-03-0510-294/+298
| | | | | | | | Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
| * batman-adv: separate ethernet comparing calls from hash functionsMarek Lindner2011-03-058-42/+51
| | | | | | | | | | | | | | Note: The function compare_ether_addr() provided by the Linux kernel requires aligned memory. Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
| * batman-adv: Fix possible buffer overflow in softif neigh list outputLinus Lüssing2011-03-051-21/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When printing the soft interface table the number of entries in the softif neigh list are first being counted and a fitting buffer allocated. After that the softif neigh list gets locked again and the buffer printed - which has the following two issues: For one thing, the softif neigh list might have grown when reacquiring the rcu lock, which results in writing outside of the allocated buffer. Furthermore 31 Bytes are not enough for printing an entry with a vid of more than 2 digits. The manual buffering is unnecessary, we can safely print to the seq directly during the rcu_read_lock(). Signed-off-by: Linus Lüssing <linus.luessing@ascom.ch> Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
| * batman-adv: Increase orig_node refcount before releasing rcu read lockLinus Lüssing2011-03-052-3/+5
| | | | | | | | | | | | | | | | | | When unicast_send_skb() is increasing the orig_node's refcount another thread might have been freeing this orig_node already. We need to increase the refcount in the rcu read lock protected area to avoid that. Signed-off-by: Linus Lüssing <linus.luessing@ascom.ch> Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
| * batman-adv: Make bat_priv->curr_gw an rcu protected pointerLinus Lüssing2011-03-052-32/+72
| | | | | | | | | | | | | | | | | | | | | | | | The rcu protected macros rcu_dereference() and rcu_assign_pointer() for the bat_priv->curr_gw need to be used, as well as spin/rcu locking. Otherwise we might end up using a curr_gw pointer pointing to already freed memory. Reported-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Linus Lüssing <linus.luessing@ascom.ch> Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
| * batman-adv: make broadcast seqno operations atomicMarek Lindner2011-03-053-22/+37
| | | | | | | | | | | | | | | | | | | | | | | | Batman-adv could receive several payload broadcasts at the same time that would trigger access to the broadcast seqno sliding window to determine whether this is a new broadcast or not. If these incoming broadcasts are accessing the sliding window simultaneously it could be left in an inconsistent state. Therefore it is necessary to make sure this access is atomic. Reported-by: Linus Lüssing <linus.luessing@web.de> Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
| * batman-adv: protect bit operations to count OGMs with spinlockMarek Lindner2011-03-052-34/+33
| | | | | | | | | | Reported-by: Linus Lüssing <linus.luessing@saxnet.de> Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
| * batman-adv: Correct rcu refcounting for batman_ifMarek Lindner2011-03-054-38/+33
| | | | | | | | | | | | | | | | | | | | | | It might be possible that 2 threads access the same data in the same rcu grace period. The first thread calls call_rcu() to decrement the refcount and free the data while the second thread increases the refcount to use the data. To avoid this race condition all refcount operations have to be atomic. Reported-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
| * batman-adv: Correct rcu refcounting for softif_neighMarek Lindner2011-03-052-17/+16
| | | | | | | | | | | | | | | | | | | | | | It might be possible that 2 threads access the same data in the same rcu grace period. The first thread calls call_rcu() to decrement the refcount and free the data while the second thread increases the refcount to use the data. To avoid this race condition all refcount operations have to be atomic. Reported-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
| * batman-adv: Correct rcu refcounting for gw_nodeMarek Lindner2011-03-052-22/+17
| | | | | | | | | | | | | | | | | | | | | | It might be possible that 2 threads access the same data in the same rcu grace period. The first thread calls call_rcu() to decrement the refcount and free the data while the second thread increases the refcount to use the data. To avoid this race condition all refcount operations have to be atomic. Reported-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
| * batman-adv: Correct rcu refcounting for neigh_nodeMarek Lindner2011-03-057-174/+313
| | | | | | | | | | | | | | | | | | | | | | It might be possible that 2 threads access the same data in the same rcu grace period. The first thread calls call_rcu() to decrement the refcount and free the data while the second thread increases the refcount to use the data. To avoid this race condition all refcount operations have to be atomic. Reported-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
| * batman-adv: protect bonding with rcu locksSimon Wunderlich2011-03-057-163/+195
| | | | | | | | | | | | | | | | | | | | bonding / alternating candidates need to be secured by rcu locks as well. This patch therefore converts the bonding list from a plain pointer list to a rcu securable lists and references the bonding candidates. Signed-off-by: Simon Wunderlich <siwu@hrz.tu-chemnitz.de> Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
| * batman-adv: protect ogm counter arrays with spinlockMarek Lindner2011-03-053-6/+33
| | | | | | | | Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
| * batman-adv: protect originator nodes with reference countersMarek Lindner2011-03-054-19/+78
| | | | | | | | Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
| * batman-adv: protect each hash row with rcu locksMarek Lindner2011-03-058-45/+141
| | | | | | | | Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
| * batman-adv: protect neigh_nodes used outside of rcu_locks with refcountingMarek Lindner2011-03-051-9/+31
| | | | | | | | Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
| * batman-adv: free neighbors when an interface is deactivatedMarek Lindner2011-03-051-2/+7
| | | | | | | | | | | | | | | | | | hardif_disable_interface() calls purge_orig_ref() to immediately free all neighbors associated with the interface that is going down. purge_orig_neighbors() checked if the interface status is IF_INACTIVE which is set to IF_NOT_IN_USE shortly before calling purge_orig_ref(). Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
| * batman-adv: protect neighbor list with rcu locksMarek Lindner2011-03-053-21/+57
| | | | | | | | Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
| * batman-adv: convert neighbor list to hlistMarek Lindner2011-03-053-28/+35
| | | | | | | | Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
| * batman-adv: protect neighbor nodes with reference countersMarek Lindner2011-03-054-8/+28
| | | | | | | | Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
| * batman-adv: Remove two duplicate includes.Jesper Juhl2011-02-141-2/+0
| | | | | | | | | | | | | | | | Remove duplicate inclusion of "send.h" and "routing.h" from net/batman-adv/soft-interface.c Signed-off-by: Jesper Juhl <jj@chaosbits.net> Signed-off-by: Sven Eckelmann <sven@narfation.org>
* | ipv4: Remove flowi from struct rtable.David S. Miller2011-03-046-85/+133
| | | | | | | | | | | | | | | | | | | | The only necessary parts are the src/dst addresses, the interface indexes, the TOS, and the mark. The rest is unnecessary bloat, which amounts to nearly 50 bytes on 64-bit. Signed-off-by: David S. Miller <davem@davemloft.net>
* | ipv4: Set rt->rt_iif more sanely on output routes.David S. Miller2011-03-041-1/+1
| | | | | | | | | | | | | | | | | | | | | | rt->rt_iif is only ever inspected on input routes, for example DCCP uses this to populate a route lookup flow key when generating replies to another packet. Therefore, setting it to anything other than zero on output routes makes no sense. Signed-off-by: David S. Miller <davem@davemloft.net>
* | ipv4: Get peer more cheaply in rt_init_metrics().David S. Miller2011-03-041-2/+2
| | | | | | | | | | | | | | We know this is a new route object, so doing atomics and stuff makes no sense at all. Signed-off-by: David S. Miller <davem@davemloft.net>
* | ipv4: Optimize flow initialization in output route lookup.David S. Miller2011-03-041-8/+10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We burn a lot of useless cycles, cpu store buffer traffic, and memory operations memset()'ing the on-stack flow used to perform output route lookups in __ip_route_output_key(). Only the first half of the flow object members even matter for output route lookups in this context, specifically: FIB rules matching cares about: dst, src, tos, iif, oif, mark FIB trie lookup cares about: dst FIB semantic match cares about: tos, scope, oif Therefore only initialize these specific members and elide the memset entirely. On Niagara2 this kills about ~300 cycles from the output route lookup path. Likely, we can take things further, since all callers of output route lookups essentially throw away the on-stack flow they use. So they don't care if we use it as a scratch-pad to compute the final flow key. Signed-off-by: David S. Miller <davem@davemloft.net> Acked-by: Eric Dumazet <eric.dumazet@gmail.com>
* | inetpeer: seqlock optimizationEric Dumazet2011-03-041-40/+35
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | David noticed : ------------------ Eric, I was profiling the non-routing-cache case and something that stuck out is the case of calling inet_getpeer() with create==0. If an entry is not found, we have to redo the lookup under a spinlock to make certain that a concurrent writer rebalancing the tree does not "hide" an existing entry from us. This makes the case of a create==0 lookup for a not-present entry really expensive. It is on the order of 600 cpu cycles on my Niagara2. I added a hack to not do the relookup under the lock when create==0 and it now costs less than 300 cycles. This is now a pretty common operation with the way we handle COW'd metrics, so I think it's definitely worth optimizing. ----------------- One solution is to use a seqlock instead of a spinlock to protect struct inet_peer_base. After a failed avl tree lookup, we can easily detect if a writer did some changes during our lookup. Taking the lock and redo the lookup is only necessary in this case. Note: Add one private rcu_deref_locked() macro to place in one spot the access to spinlock included in seqlock. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | Merge branch 'for-davem' of ↵David S. Miller2011-03-0414-159/+266
|\ \ | | | | | | | | | ssh://master.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next-2.6
| * \ Merge branch 'master' of ↵John W. Linville2011-03-0414-159/+266
| |\ \ | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next-2.6 into for-davem
| | * | mac80211: make rate control Kconfig warning depend on mac80211Johannes Berg2011-03-011-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | ... Otherwise it is displayed when mac80211 isn't even turned on, which is completely pointless. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
| | * | mac80211: add support for showing the last rx bitrateFelix Fietkau2011-03-013-10/+36
| | | | | | | | | | | | | | | | | | | | Signed-off-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
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