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* | Phonet: sockets list through proc_fsRémi Denis-Courmont2009-07-242-0/+103
| | | | | | | | | | | | | | | | This provides a list of sockets with their Phonet bind addresses and some socket debug informations through /proc/net/phonet. Signed-off-by: Rémi Denis-Courmont <remi.denis-courmont@nokia.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | mcastv6: Local variable shadows function argumentGerrit Renker2009-07-211-1/+0Star
| | | | | | | | | | | | | | | | | | | | The local variable 'idev' shadows the function argument 'idev' to ip6_mc_add_src(). Fixed by removing the local declaration, as pmc->idev should be identical with 'idev' passed as argument. Signed-off-by: Gerrit Renker <gerrit@erg.abdn.ac.uk> Acked-by: David L Stevens <dlstevens@us.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | RDS: Refactor end of __conn_create for readabilityAndy Grover2009-07-201-17/+31
| | | | | | | | | | | | | | | | | | Add a comment for what's going on. Remove negative logic. I find this much easier to understand quickly, although there are a few lines duplicated. Signed-off-by: Andy Grover <andy.grover@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | RDS/IW: Remove dead codeAndy Grover2009-07-201-9/+4Star
| | | | | | | | | | | | | | In iWARP code, node_type will always be RNIC Signed-off-by: Andy Grover <andy.grover@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | RDS/IW: Remove page_shift variable from iwarp transportAndy Grover2009-07-204-22/+11Star
| | | | | | | | | | | | | | | | | | The existing code treated page_shift as a variable, when in fact we always want to have the fastreg page size be the same as the arch's page size -- and it is, so this doesn't need to be a variable. Signed-off-by: Andy Grover <andy.grover@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | RDS/IB: Always use PAGE_SIZE for FMR page sizeAndy Grover2009-07-203-12/+6Star
| | | | | | | | | | | | | | | | | | While FMRs allow significant flexibility in what size of pages they can use, we really just want FMR pages to match CPU page size. Roland says we can count on this always being supported, so this simplifies things. Signed-off-by: Andy Grover <andy.grover@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | RDS: Fix completion notifications on blocking socketsAndy Grover2009-07-201-11/+13
| | | | | | | | | | | | | | | | Completion or congestion notifications were not being checked if the socket went to sleep. This patch fixes that. Signed-off-by: Andy Grover <andy.grover@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | RDS/IB: Drop connection when a fatal QP event is receivedAndy Grover2009-07-201-3/+3
| | | | | | | | | | Signed-off-by: Andy Grover <andy.grover@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | RDS/IB: Disable flow control in sysctl and explain whyAndy Grover2009-07-201-1/+11
| | | | | | | | | | | | | | | | | | | | | | | | Backwards compatibility with rds 3.0 causes protocol- based flow control to be disabled as a side-effect. I don't want to pull out FC support from the IB transport but I do want to document and keep the sysctl consistent if possible. Signed-off-by: Andy Grover <andy.grover@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | RDS/IB: Move tx/rx ring init and refill to laterAndy Grover2009-07-201-6/+12
| | | | | | | | | | | | | | | | | | Since RDS 3.0 and 3.1 have different packet formats, we need to wait until after protocol negotiation is complete to layout the rx buffers. Signed-off-by: Andy Grover <andy.grover@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | RDS: Don't set c_version in __rds_conn_create()Andy Grover2009-07-201-1/+0Star
| | | | | | | | | | | | | | | | Protocol negotiation is logically a property of the transports, so rds core need not set it. Signed-off-by: Andy Grover <andy.grover@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | RDS/IB: Rename byte_len to data_len to enhance readabilityAndy Grover2009-07-201-6/+6
| | | | | | | | | | | | | | | | Of course len is in bytes. Calling it data_len hopefully indicates a little better what the variable is actually for. Signed-off-by: Andy Grover <andy.grover@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | RDS/RDMA: Fix cut-n-paste errors in printks in rdma_transport.cAndy Grover2009-07-201-4/+4
| | | | | | | | | | Signed-off-by: Andy Grover <andy.grover@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | RDS/IB: Fix printk to indicate remote IP, not localAndy Grover2009-07-201-1/+1
| | | | | | | | | | Signed-off-by: Andy Grover <andy.grover@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | RDS/IB: Handle connections using RDS 3.0 wire protocolAndy Grover2009-07-203-6/+58
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The big differences between RDS 3.0 and 3.1 are protocol-level flow control, and with 3.1 the header is in front of the data. The header always ends up in the header buffer, and the data goes in the data page. In 3.0 our "header" is a trailer, and will end up either in the data page, the header buffer, or split across the two. Since 3.1 is backwards- compatible with 3.0, we need to continue to support these cases. This patch does that -- if using RDS 3.0 wire protocol, it will copy the header from wherever it ended up into the header buffer. Signed-off-by: Andy Grover <andy.grover@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | RDS/IB: Improve RDS protocol version checkingAndy Grover2009-07-201-6/+19
| | | | | | | | | | | | | | | | | | RDS on IB uses privdata to do protocol version negotiation. Apparently the IB stack will return a larger privdata buffer than the struct we were expecting. Just to be extra-sure, this patch adds some checks in this area. Signed-off-by: Andy Grover <andy.grover@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | RDS: Set retry_count to 2 and make modifiable via modparamAndy Grover2009-07-203-1/+7
| | | | | | | | | | | | | | | | This will be default cause IB connections to failover faster, but allow a longer retry count to be used if desired. Signed-off-by: Andy Grover <andy.grover@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | ipv4: fib_trie: Use tnode_get_child_rcu() and node_parent_rcu() in lookupsJarek Poplawski2009-07-201-3/+3
| | | | | | | | | | | | | | | | | | While looking for other fib_trie problems reported by Pawel Staszewski I noticed there are a few uses of tnode_get_child() and node_parent() in lookups instead of their rcu versions. Signed-off-by: Jarek Poplawski <jarkao2@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | ipv4: Fix inflate_threshold_root automaticallyJarek Poplawski2009-07-201-7/+22
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | During large updates there could be triggered warnings like: "Fix inflate_threshold_root. Now=25 size=11 bits" if inflate() of the root node isn't finished in 10 loops. It should be much rarer now, after changing the threshold from 15 to 25, and a temporary problem, so this patch tries to handle it automatically using a fix variable to increase by one inflate threshold for next root resizes (up to the 35 limit, max fix = 10). The fix variable is decreased when root's inflate() finishes below 7 loops (even if some other, smaller table/ trie is updated -- for simplicity the fix variable is global for now). Reported-by: Pawel Staszewski <pstaszewski@itcare.pl> Reported-by: Jorge Boncompte [DTI2] <jorge@dti2.net> Tested-by: Pawel Staszewski <pstaszewski@itcare.pl> Signed-off-by: Jarek Poplawski <jarkao2@gmail.com> Signed-off-by: Robert Olsson <robert.olsson@its.uu.se> Signed-off-by: David S. Miller <davem@davemloft.net>
* | ipv4: Use synchronize_rcu() during trie_rebalance()Jarek Poplawski2009-07-201-0/+15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | During trie_rebalance() we free memory after resizing with call_rcu(), but large updates, especially with PREEMPT_NONE configs, can cause memory stresses, so this patch calls synchronize_rcu() in tnode_free_flush() after each sync_pages to guarantee such freeing (especially before resizing the root node). The value of sync_pages = 128 is based on Pawel Staszewski's tests as the lowest which doesn't hinder updating times. (For testing purposes there was a sysfs module parameter to change it on demand, but it's removed until we're sure it could be really useful.) The patch is based on suggestions by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Reported-by: Pawel Staszewski <pstaszewski@itcare.pl> Tested-by: Pawel Staszewski <pstaszewski@itcare.pl> Signed-off-by: Jarek Poplawski <jarkao2@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | vlan: Propagate physical MTU changesHerbert Xu2009-07-201-0/+13
| | | | | | | | | | | | | | | | | | When the physical MTU changes we want to ensure that all existing VLAN device MTUs do not exceed the new underlying MTU. This patch adds that propagation. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
* | udp: cleanupsEric Dumazet2009-07-171-44/+43Star
| | | | | | | | | | | | | | Pure style cleanups. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | Merge branch 'master' of ↵David S. Miller2009-07-179-13/+67
|\| | | | | | | | | | | | | master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6 Conflicts: drivers/net/wireless/orinoco/main.c
| * net: sock_copy() fixesEric Dumazet2009-07-171-2/+18
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Commit e912b1142be8f1e2c71c71001dc992c6e5eb2ec1 (net: sk_prot_alloc() should not blindly overwrite memory) took care of not zeroing whole new socket at allocation time. sock_copy() is another spot where we should be very careful. We should not set refcnt to a non null value, until we are sure other fields are correctly setup, or a lockless reader could catch this socket by mistake, while not fully (re)initialized. This patch puts sk_node & sk_refcnt to the very beginning of struct sock to ease sock_copy() & sk_prot_alloc() job. We add appropriate smp_wmb() before sk_refcnt initializations to match our RCU requirements (changes to sock keys should be committed to memory before sk_refcnt setting) Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * Merge branch 'master' of ↵David S. Miller2009-07-172-5/+21
| |\ | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/kaber/nf-2.6
| | * netfilter: nf_conntrack: nf_conntrack_alloc() fixesEric Dumazet2009-07-161-3/+18
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When a slab cache uses SLAB_DESTROY_BY_RCU, we must be careful when allocating objects, since slab allocator could give a freed object still used by lockless readers. In particular, nf_conntrack RCU lookups rely on ct->tuplehash[xxx].hnnode.next being always valid (ie containing a valid 'nulls' value, or a valid pointer to next object in hash chain.) kmem_cache_zalloc() setups object with NULL values, but a NULL value is not valid for ct->tuplehash[xxx].hnnode.next. Fix is to call kmem_cache_alloc() and do the zeroing ourself. As spotted by Patrick, we also need to make sure lookup keys are committed to memory before setting refcount to 1, or a lockless reader could get a reference on the old version of the object. Its key re-check could then pass the barrier. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: Patrick McHardy <kaber@trash.net>
| | * netfilter: xt_osf: fix nf_log_packet() argumentsPatrick McHardy2009-07-161-2/+3
| | | | | | | | | | | | | | | | | | | | | The first argument is the address family, the second one the hook number. Signed-off-by: Patrick McHardy <kaber@trash.net>
| * | net/can: add module alias to can protocol driversLothar Waßmann2009-07-152-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | Add appropriate MODULE_ALIAS() to facilitate autoloading of can protocol drivers Signed-off-by: Lothar Wassmann <LW@KARO-electronics.de> Acked-by: Oliver Hartkopp <oliver@hartkopp.net> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | net/can bugfix: use after free bug in can protocol driversLothar Waßmann2009-07-152-0/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fix a use after free bug in can protocol drivers The release functions of the can protocol drivers lack a call to sock_orphan() which leads to referencing freed memory under certain circumstances. This patch fixes a bug reported here: https://lists.berlios.de/pipermail/socketcan-users/2009-July/000985.html Signed-off-by: Lothar Wassmann <LW@KARO-electronics.de> Acked-by: Oliver Hartkopp <oliver@hartkopp.net> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | gre: fix ToS/DiffServ inherit bugAndreas Jaggi2009-07-141-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | Fixes two bugs: - ToS/DiffServ inheritance was unintentionally activated when using impair fixed ToS values - ECN bit was lost during ToS/DiffServ inheritance Signed-off-by: Andreas Jaggi <aj@open.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | sit: fix regression: do not release skb->dst before xmitSascha Hlusiak2009-07-121-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The sit module makes use of skb->dst in it's xmit function, so since 93f154b594fe47 ("net: release dst entry in dev_hard_start_xmit()") sit tunnels are broken, because the flag IFF_XMIT_DST_RELEASE is not unset. This patch unsets that flag for sit devices to fix this regression. Signed-off-by: Sascha Hlusiak <contact@saschahlusiak.de> Acked-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | net: ip_push_pending_frames() fixEric Dumazet2009-07-122-2/+0Star
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | After commit 2b85a34e911bf483c27cfdd124aeb1605145dc80 (net: No more expensive sock_hold()/sock_put() on each tx) we do not take any more references on sk->sk_refcnt on outgoing packets. I forgot to delete two __sock_put() from ip_push_pending_frames() and ip6_push_pending_frames(). Reported-by: Emil S Tantilov <emils.tantilov@gmail.com> Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Tested-by: Emil S Tantilov <emils.tantilov@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | net: sk_prot_alloc() should not blindly overwrite memoryEric Dumazet2009-07-121-2/+17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Some sockets use SLAB_DESTROY_BY_RCU, and our RCU code correctness depends on sk->sk_nulls_node.next being always valid. A NULL value is not allowed as it might fault a lockless reader. Current sk_prot_alloc() implementation doesnt respect this hypothesis, calling kmem_cache_alloc() with __GFP_ZERO. Just call memset() around the forbidden field. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | | net/compat/wext: send different messages to compat tasksJohannes Berg2009-07-154-3/+148
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Wireless extensions have the unfortunate problem that events are multicast netlink messages, and are not independent of pointer size. Thus, currently 32-bit tasks on 64-bit platforms cannot properly receive events and fail with all kinds of strange problems, for instance wpa_supplicant never notices disassociations, due to the way the 64-bit event looks (to a 32-bit process), the fact that the address is all zeroes is lost, it thinks instead it is 00:00:00:00:01:00. The same problem existed with the ioctls, until David Miller fixed those some time ago in an heroic effort. A different problem caused by this is that we cannot send the ASSOCREQIE/ASSOCRESPIE events because sending them causes a 32-bit wpa_supplicant on a 64-bit system to overwrite its internal information, which is worse than it not getting the information at all -- so we currently resort to sending a custom string event that it then parses. This, however, has a severe size limitation we are frequently hitting with modern access points; this limitation would can be lifted after this patch by sending the correct binary, not custom, event. A similar problem apparently happens for some other netlink users on x86_64 with 32-bit tasks due to the alignment for 64-bit quantities. In order to fix these problems, I have implemented a way to send compat messages to tasks. When sending an event, we send the non-compat event data together with a compat event data in skb_shinfo(main_skb)->frag_list. Then, when the event is read from the socket, the netlink code makes sure to pass out only the skb that is compatible with the task. This approach was suggested by David Miller, my original approach required always sending two skbs but that had various small problems. To determine whether compat is needed or not, I have used the MSG_CMSG_COMPAT flag, and adjusted the call path for recv and recvfrom to include it, even if those calls do not have a cmsg parameter. I have not solved one small part of the problem, and I don't think it is necessary to: if a 32-bit application uses read() rather than any form of recvmsg() it will still get the wrong (64-bit) event. However, neither do applications actually do this, nor would it be a regression. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: David S. Miller <davem@davemloft.net>
* | | wext: optimise, comment and fix event sendingJohannes Berg2009-07-151-57/+57
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The current function for sending events first allocates the event stream buffer, and then an skb to copy the event stream into. This can be done in one go. Also, the current function leaks kernel data to userspace in a 4 uninitialised bytes, initialise those explicitly. Finally also add a few useful comments, as opposed to the current comments. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: David S. Miller <davem@davemloft.net>
* | | wireless extensions: make netns awareJohannes Berg2009-07-151-32/+29Star
| | | | | | | | | | | | | | | | | | | | | | | | | | | This makes wireless extensions netns aware. The tasklet sending the events is converted to a work struct so that we can rtnl_lock() in it. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: David S. Miller <davem@davemloft.net>
* | | net: Rename lookup_neigh_params functionTobias Klauser2009-07-131-3/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | Rename lookup_neigh_params to lookup_neigh_parms as the struct is named neigh_parms and all other functions dealing with the struct carry neigh_parms in their names. Signed-off-by: Tobias Klauser <klto@zhaw.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
* | | net: remove redundant sched/ in net/MakefileChangli Gao2009-07-131-1/+0Star
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Remove redundant sched/ in net/Makefile. sched/ is contained in previous: obj-$(CONFIG_NET) += ethernet/ 802/ sched/ netlink/, so the later obj-$(CONFIG_NET_SCHED) += sched/ isn't necessary. Signed-off-by: Changli Gao <xiaosuo@gmail.com> ---- Makefile | 1 - 1 file changed, 1 deletion(-) Signed-off-by: David S. Miller <davem@davemloft.net>
* | | udpv6: Handle large incoming UDP/IPv6 packets and support software UFOSridhar Samudrala2009-07-122-3/+110
| | | | | | | | | | | | | | | | | | | | | | | | | | | - validate and forward GSO UDP/IPv6 packets from untrusted sources. - do software UFO if the outgoing device doesn't support UFO. Signed-off-by: Sridhar Samudrala <sri@us.ibm.com> Acked-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
* | | udpv6: Remove unused skb argument of ipv6_select_ident()Sridhar Samudrala2009-07-121-15/+3Star
| | | | | | | | | | | | | | | | | | | | | | | | | | | - move ipv6_select_ident() inline function to ipv6.h and remove the unused skb argument Signed-off-by: Sridhar Samudrala <sri@us.ibm.com> Acked-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
* | | udpv6: Fix gso_size setting in ip6_ufo_append_dataSridhar Samudrala2009-07-121-3/+5
| | | | | | | | | | | | | | | | | | | | | | | | - fix gso_size setting for ipv6 fragment to be a multiple of 8 bytes. Signed-off-by: Sridhar Samudrala <sri@us.ibm.com> Acked-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
* | | udpv6: Fix HW checksum support for outgoing UFO packetsSridhar Samudrala2009-07-121-1/+47
| | | | | | | | | | | | | | | | | | | | | | | | | | | - add HW checksum support for outgoing large UDP/IPv6 packets destined for a UFO enabled device. Signed-off-by: Sridhar Samudrala <sri@us.ibm.com> Acked-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
* | | udpv4: Handle large incoming UDP/IPv4 packets and support software UFO.Sridhar Samudrala2009-07-122-1/+72
| | | | | | | | | | | | | | | | | | | | | | | | | | | - validate and forward GSO UDP/IPv4 packets from untrusted sources. - do software UFO if the outgoing device doesn't support UFO. Signed-off-by: Sridhar Samudrala <sri@us.ibm.com> Acked-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
* | | net: move and export get_net_ns_by_pidJohannes Berg2009-07-122-20/+22
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The function get_net_ns_by_pid(), to get a network namespace from a pid_t, will be required in cfg80211 as well. Therefore, let's move it to net_namespace.c and export it. We can't make it a static inline in the !NETNS case because it needs to verify that the given pid even exists (and return -ESRCH). Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: David S. Miller <davem@davemloft.net>
* | | genetlink: make netns awareJohannes Berg2009-07-125-50/+156
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This makes generic netlink network namespace aware. No generic netlink families except for the controller family are made namespace aware, they need to be checked one by one and then set the family->netnsok member to true. A new function genlmsg_multicast_netns() is introduced to allow sending a multicast message in a given namespace, for example when it applies to an object that lives in that namespace, a new function genlmsg_multicast_allns() to send a message to all network namespaces (for objects that do not have an associated netns). The function genlmsg_multicast() is changed to multicast the message in just init_net, which is currently correct for all generic netlink families since they only work in init_net right now. Some will later want to work in all net namespaces because they do not care about the netns at all -- those will have to be converted to use one of the new functions genlmsg_multicast_allns() or genlmsg_multicast_netns() whenever they are made netns aware in some way. After this patch families can easily decide whether or not they should be available in all net namespaces. Many genl families us it for objects not related to networking and should therefore be available in all namespaces, but that will have to be done on a per family basis. Note that this doesn't touch on the checkpoint/restart problem where network namespaces could be used, genl families and multicast groups are numbered globally and I see no easy way of changing that, especially since it must be possible to multicast to all network namespaces for those families that do not care about netns. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: David S. Miller <davem@davemloft.net>
* | | net: make namespace iteration possible under RCUJohannes Berg2009-07-121-3/+11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | All we need to take care of is using proper RCU list add/del primitives and inserting a synchronize_rcu() at one place to make sure the exit notifiers are run after everybody has stopped iterating the list. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: David S. Miller <davem@davemloft.net>
* | | netlink: use call_rcu for netlink_change_ngroupsJohannes Berg2009-07-121-4/+30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | For the network namespace work in generic netlink I need to be able to call this function under rcu_read_lock(), otherwise the locking becomes a nightmare and more locks would be needed. Instead, just embed a struct rcu_head (actually a struct listeners_rcu_head that also carries the pointer to the memory block) into the listeners memory so we can use call_rcu() instead of synchronising and then freeing. No rcu_barrier() is needed since this code cannot be modular. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: David S. Miller <davem@davemloft.net>
* | | netlink: remove unused exportsJohannes Berg2009-07-121-2/+0Star
| | | | | | | | | | | | | | | | | | | | | | | | | | | I added those myself in commits b4ff4f04 and 84659eb5, but I see no reason now why they should be exported, only generic netlink uses them which cannot be modular. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: David S. Miller <davem@davemloft.net>
* | | cfg80211: disallow configuring unsupported interfacesJohannes Berg2009-07-101-2/+9
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In order to force drivers to advertise their interface types, don't just disallow creating new interfaces with unadvertised types but also disallow setting them UP. Additionally, add some validation on the operations the drivers support. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* | | cfg80211: clean up naming once and for allJohannes Berg2009-07-107-356/+356
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We've named the registered devices 'drv' sometimes, thinking of "driver", which is not what it is, it's the internal representation of a wiphy, i.e. a device. Let's clean up the naming once and and use 'rdev' aka 'registered device' everywhere. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
generated by cgit v1.2.3-55-g7522 (git 2.39.0) at 2024-07-09 01:42:53 +0200