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* [NET]: Make core networking code use seq_open_privatePavel Emelyanov2007-10-111-34/+4
| | | | | | | | | | | This concerns the ipv4 and ipv6 code mostly, but also the netlink and unix sockets. The netlink code is an example of how to use the __seq_open_private() call - it saves the net namespace on this private. Signed-off-by: Pavel Emelyanov <xemul@openvz.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* [NET]: sparse warning fixesStephen Hemminger2007-10-111-3/+2
| | | | | | | | | Fix a bunch of sparse warnings. Mostly about 0 used as NULL pointer, and shadowed variable declarations. One notable case was that hash size should have been unsigned. Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* [NET]: Make the device list and device lookups per namespace.Eric W. Biederman2007-10-111-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
* [NET]: Make /proc/net per network namespaceEric W. Biederman2007-10-111-2/+3
| | | | | | | | | | | | | | | | | | 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>
* [IPV4]: Convert IPv4 devconf to an arrayHerbert Xu2007-06-071-8/+10
| | | | | | | | | This patch converts the ipv4_devconf config members (everything except sysctl) to an array. This allows easier manipulation which will be needed later on to provide better management of default config values. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
* [NET]: Rework dev_base via list_head (v3)Pavel Emelianov2007-05-041-8/+7
| | | | | | | | | | | | Cleanup of dev_base list use, with the aim to simplify making device list per-namespace. In almost every occasion, use of dev_base variable and dev->next pointer could be easily replaced by for_each_netdev loop. A few most complicated places were converted to using first_netdev()/next_netdev(). Signed-off-by: Pavel Emelianov <xemul@openvz.org> Acked-by: Kirill Korotaev <dev@openvz.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* [SK_BUFF]: Convert skb->tail to sk_buff_data_tArnaldo Carvalho de Melo2007-04-261-2/+2
| | | | | | | | | | | | | | | So that it is also an offset from skb->head, reduces its size from 8 to 4 bytes on 64bit architectures, allowing us to combine the 4 bytes hole left by the layer headers conversion, reducing struct sk_buff size to 256 bytes, i.e. 4 64byte cachelines, and since the sk_buff slab cache is SLAB_HWCACHE_ALIGN... :-) Many calculations that previously required that skb->{transport,network, mac}_header be first converted to a pointer now can be done directly, being meaningful as offsets or pointers. Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [SK_BUFF]: unions of just one member don't get anything done, kill themArnaldo Carvalho de Melo2007-04-261-1/+1
| | | | | | | | | Renaming skb->h to skb->transport_header, skb->nh to skb->network_header and skb->mac to skb->mac_header, to match the names of the associated helpers (skb[_[re]set]_{transport,network,mac}_header). Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [SK_BUFF]: Use the helpers to get the layer header pointerArnaldo Carvalho de Melo2007-04-261-1/+1
| | | | | | | Some more cases... Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [SK_BUFF]: More skb_put related skb_reset_transport_headerArnaldo Carvalho de Melo2007-04-261-1/+2
| | | | | | | | | This time we have to set it to skb->tail that is not anymore equal to skb->data, so we either add a new helper or just add the skb->tail - skb->data offset, for now do the later. Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [SK_BUFF]: Introduce skb_transport_header(skb)Arnaldo Carvalho de Melo2007-04-261-1/+1
| | | | | | | | | For the places where we need a pointer to the transport header, it is still legal to touch skb->h.raw directly if just adding to, subtracting from or setting it to another layer header. Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [SK_BUFF]: Introduce igmp_hdr() & friends, remove skb->h.igmphArnaldo Carvalho de Melo2007-04-261-11/+11
| | | | | Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [SK_BUFF]: Introduce ip_hdr(), remove skb->nh.iphArnaldo Carvalho de Melo2007-04-261-8/+6
| | | | | Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [NET]: make seq_operations constStephen Hemminger2007-04-261-2/+2
| | | | | | | | The seq_file operations stuff can be marked constant to get it out of dirty cache. Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* [SK_BUFF]: Use skb_reset_network_header where the skb_pull return was being usedArnaldo Carvalho de Melo2007-04-261-2/+6
| | | | | | | | | But only in the cases where its a newly allocated skb, i.e. one where skb->tail is equal to skb->data, or just after skb_reserve, where this requirement is maintained. Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [IPV4]: Fix warning in ip_mc_rejoin_group.Geert Uytterhoeven2007-03-131-1/+1
| | | | | | | | Kill warning about unused variable `in_dev' when CONFIG_IP_MULTICAST is not set. Signed-off-by: Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* bonding: Improve IGMP join processingJay Vosburgh2007-03-061-0/+23
| | | | | | | | | | | | | | | | | | | | | | | In active-backup mode, the current bonding code duplicates IGMP traffic to all slaves, so that switches are up to date in case of a failover from an active to a backup interface. If bonding then fails back to the original active interface, it is likely that the "active slave" switch's IGMP forwarding for the port will be out of date until some event occurs to refresh the switch (e.g., a membership query). This patch alters the behavior of bonding to no longer flood IGMP to all ports, and to issue IGMP JOINs to the newly active port at the time of a failover. This insures that switches are kept up to date for all cases. "GOELLESCH Niels" <niels.goellesch@eurocontrol.int> originally reported this problem, and included a patch. His original patch was modified by Jay Vosburgh to additionally remove the existing IGMP flood behavior, use RCU, streamline code paths, fix trailing white space, and adjust for style. Signed-off-by: Jay Vosburgh <fubar@us.ibm.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
* [PATCH] mark struct file_operations const 7Arjan van de Ven2007-02-121-2/+2
| | | | | | | | | | | Many struct file_operations in the kernel can be "const". Marking them const moves these to the .rodata section, which avoids false sharing with potential dirty data. In addition it'll catch accidental writes at compile time to these shared resources. Signed-off-by: Arjan van de Ven <arjan@linux.intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* [NET] IPV4: Fix whitespace errors.YOSHIFUJI Hideaki2007-02-111-23/+23
| | | | | Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* [IPV4/IPV6] multicast: Check add_grhead() return valueAlexey Dobriyan2007-02-081-0/+2
| | | | | | | | add_grhead() allocates memory with GFP_ATOMIC and in at least two places skb from it passed to skb_put() without checking. Signed-off-by: Alexey Dobriyan <adobriyan@openvz.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* [NET]: Annotate callers of csum_fold() in net/*Al Viro2006-12-031-1/+1
| | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: David S. Miller <davem@davemloft.net>
* [IPV4]: trivial igmp annotationsAl Viro2006-09-291-17/+17
| | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: David S. Miller <davem@davemloft.net>
* [IPV4]: ip_mc_sf_allow() annotatedAl Viro2006-09-291-1/+1
| | | | | | | ip_mc_sf_allow() expects addresses to be passed net-endian. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: David S. Miller <davem@davemloft.net>
* [IPV4]: struct ip_sf_list and struct ip_sf_socklist annotatedAl Viro2006-09-291-4/+4
| | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: David S. Miller <davem@davemloft.net>
* [IPV4]: ip_mc_{inc,dec}_group() annotationsAl Viro2006-09-291-12/+12
| | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: David S. Miller <davem@davemloft.net>
* [IPV4]: ip_check_mc() annotationsAl Viro2006-09-291-1/+1
| | | | | | | annotated arguments Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: David S. Miller <davem@davemloft.net>
* [NET/IPV4/IPV6]: Change some sysctl variables to __read_mostlyBrian Haley2006-09-221-2/+2
| | | | | | | | | | Change net/core, ipv4 and ipv6 sysctl variables to __read_mostly. Couldn't actually measure any performance increase while testing (.3% I consider noise), but seems like the right thing to do. Signed-off-by: Brian Haley <brian.haley@hp.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [NET]: Replace CHECKSUM_HW by CHECKSUM_PARTIAL/CHECKSUM_COMPLETEPatrick McHardy2006-09-221-1/+1
| | | | | | | | | | | Replace CHECKSUM_HW by CHECKSUM_PARTIAL (for outgoing packets, whose checksum still needs to be completed) and CHECKSUM_COMPLETE (for incoming packets, device supplied full checksum). Patch originally from Herbert Xu, updated by myself for 2.6.18-rc3. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
* [MCAST]: Fix filter leak on device removal.David L Stevens2006-08-181-13/+19
| | | | | | | | | | | This fixes source filter leakage when a device is removed and a process leaves the group thereafter. This also includes corresponding fixes for IPv6 multicast source filters on device removal. Signed-off-by: David L Stevens <dlstevens@us.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [IPV4]: Possible leak of multicast source filter sctructureMichal Ruzicka2006-08-181-3/+3
| | | | | | | | | | There is a leak of a socket's multicast source filter list structure on closing a socket with a multicast source filter set on an interface that does not exist any more. Signed-off-by: Michal Ruzicka <michal.ruzicka@comstar.cz> Acked-by: David L Stevens <dlstevens@us.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [NET]: Conversions from kmalloc+memset to k(z|c)alloc.Panagiotis Issaris2006-07-211-8/+4
| | | | | | Signed-off-by: Panagiotis Issaris <takis@issaris.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* Remove obsolete #include <linux/config.h>Jörn Engel2006-06-301-1/+0
| | | | | Signed-off-by: Jörn Engel <joern@wohnheim.fh-wedel.de> Signed-off-by: Adrian Bunk <bunk@stusta.de>
* [IPV4] igmp: Fixup struct ip_mc_list::multiaddr typeAlexey Dobriyan2006-06-181-1/+1
| | | | | | | | | | | All users except two expect 32-bit big-endian value. One is of ->multiaddr = ->multiaddr variety. And last one is "%08lX". Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [NET]: dev_put/dev_hold cleanupStephen Hemminger2006-03-211-1/+1
| | | | | | | | | Get rid of the old __dev_put macro that is just a hold over from pre 2.6 kernel. And turn dev_hold into an inline instead of a macro. Signed-off-by: Stephen Hemminger <shemminger@osdl.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* [NET]: Convert RTNL to mutex.Stephen Hemminger2006-03-211-12/+12
| | | | | | | | This patch turns the RTNL from a semaphore to a new 2.6.16 mutex and gets rid of some of the leftover legacy. Signed-off-by: Stephen Hemminger <shemminger@osdl.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* [PATCH] ipv4 NULL noise removalAl Viro2006-02-081-1/+1
| | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* Fix ipv4/igmp.c compile with gcc-4 and IP_MULTICASTLinus Torvalds2006-01-311-0/+1
| | | | | | | | Modern versions of gcc do not like case statements at the end of a block statement: you need at least an empty statement. Using just a "break;" is preferred for visual style. Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [IPV4] igmp: remove pointless printkDave Jones2006-01-311-1/+0
| | | | | | | | This is easily triggerable by sending bogus packets, allowing a malicious user to flood remote logs. Signed-off-by: Dave Jones <davej@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [IPV4]: Fix multiple bugs in IGMPv3David L Stevens2006-01-181-30/+122
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | 1) fix "mld_marksources()" to a) send nothing when all queried sources are excluded b) send full exclude report when source queried sources are not excluded c) don't schedule a timer when there's nothing to report 2) fix "add_grec()" to send empty-source records when it should The original check doesn't account for a non-empty source list with all sources inactive; the new code keeps that short-circuit case, and also generates the group header with an empty list if needed. 3) fix mca_crcount decrement to be after add_grec(), which needs its original value 4) add/remove delete records and prevent current advertisements when an exclude-mode filter moves from "active" to "inactive" or vice versa based on new filter additions. Items 1-3 are just IPv4 versions of the IPv6 bugs found by Yan Zheng and fixed earlier. Item #4 is a related bug that affects exclude-mode change records only (but not queries) and also occurs in IPv6 (IPv6 version coming soon). Signed-off-by: David L Stevens <dlstevens@us.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [NET]: Remove more unneeded typecasts on *malloc()Kris Katterjohn2006-01-121-8/+7
| | | | | | | | | This removes more unneeded casts on the return value for kmalloc(), sock_kmalloc(), and vmalloc(). Signed-off-by: Kris Katterjohn <kjak@users.sourceforge.net> Acked-by: James Morris <jmorris@namei.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* [INET_SOCK]: Move struct inet_sock & helper functions to net/inet_sock.hArnaldo Carvalho de Melo2006-01-031-0/+2
| | | | | | | | | | | To help in reducing the number of include dependencies, several files were touched as they were getting needed headers indirectly for stuff they use. Thanks also to Alan Menegotto for pointing out that net/dccp/proto.c had linux/dccp.h include twice. Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [IGMP]: workaround for IGMP v1/v2 bugDavid Stevens2005-12-031-1/+4
| | | | | | | | | | | | | | | | | From: David Stevens <dlstevens@us.ibm.com> As explained at: http://www.cs.ucsb.edu/~krishna/igmp_dos/ With IGMP version 1 and 2 it is possible to inject a unicast report to a client which will make it ignore multicast reports sent later by the router. The fix is to only accept the report if is was sent to a multicast or unicast address. Signed-off-by: David S. Miller <davem@davemloft.net>
* [NET]: Detect hardware rx checksum faults correctlyHerbert Xu2005-11-101-5/+14
| | | | | | | | | | | | | | | | | | | | | | | | | | | Here is the patch that introduces the generic skb_checksum_complete which also checks for hardware RX checksum faults. If that happens, it'll call netdev_rx_csum_fault which currently prints out a stack trace with the device name. In future it can turn off RX checksum. I've converted every spot under net/ that does RX checksum checks to use skb_checksum_complete or __skb_checksum_complete with the exceptions of: * Those places where checksums are done bit by bit. These will call netdev_rx_csum_fault directly. * The following have not been completely checked/converted: ipmr ip_vs netfilter dccp This patch is based on patches and suggestions from Stephen Hemminger and David S. Miller. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
* [MCAST]: ip[6]_mc_add_src should be called when number of sources is zeroYan Zheng2005-11-031-1/+4
| | | | | | | | | | | | | | | | | | And filter mode is exclude. Further explanation by David Stevens: Multicast source filters aren't widely used yet, and that's really the only feature that's affected if an application actually exercises this bug, as far as I can tell. An ordinary filter-less multicast join should still work, and only forwarded multicast traffic making use of filters and doing empty-source filters with the MSFILTER ioctl would be at risk of not getting multicast traffic forwarded to them because the reports generated would not be based on the correct counts. Signed-off-by: Yan Zheng <yanzheng@21cn.com Acked-by: David L Stevens <dlstevens@us.ibm.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com>
* [IPV4]: Replace __in_dev_get with __in_dev_get_rcu/rtnlHerbert Xu2005-10-031-1/+1
| | | | | | | | | | | | | | | | | | The following patch renames __in_dev_get() to __in_dev_get_rtnl() and introduces __in_dev_get_rcu() to cover the second case. 1) RCU with refcnt should use in_dev_get(). 2) RCU without refcnt should use __in_dev_get_rcu(). 3) All others must hold RTNL and use __in_dev_get_rtnl(). There is one exception in net/ipv4/route.c which is in fact a pre-existing race condition. I've marked it as such so that we remember to fix it. This patch is based on suggestions and prior work by Suzanne Wood and Paul McKenney. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
* [MCAST]: Fix MCAST_EXCLUDE line dupesDenis Lukianov2005-09-151-1/+1
| | | | | | | | | | This patch fixes line dupes at /ipv4/igmp.c and /ipv6/mcast.c in the 2.6 kernel, where MCAST_EXCLUDE is mistakenly used instead of MCAST_INCLUDE. Signed-off-by: Denis Lukianov <denis@voxelsoft.com> Signed-off-by: David L Stevens <dlstevens@us.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [NET]: Make NETDEBUG pure printk wrappersPatrick McHardy2005-08-301-1/+1
| | | | | Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
* [IPV4]: fix IPv4 leave-group group matchingDavid L Stevens2005-07-091-12/+13
| | | | | | | | | | | | This patch fixes the multicast group matching for IP_DROP_MEMBERSHIP, similar to the IP_ADD_MEMBERSHIP fix in a prior patch. Groups are identifiedby <group address,interface> and including the interface address in the match will fail if a leave-group is done by address when the join was done by index, or if different addresses on the same interface are used in the join and leave. Signed-off-by: David L Stevens <dlstevens@us.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [IPV4]: (INCLUDE,empty)/leave-group equivalence for full-state MSF APIs & ↵David L Stevens2005-07-091-1/+10
| | | | | | | | | | | | | errno fix 1) Adds (INCLUDE, empty)/leave-group equivalence to the full-state multicast source filter APIs (IPv4 and IPv6) 2) Fixes an incorrect errno in the IPv6 leave-group (ENOENT should be EADDRNOTAVAIL) Signed-off-by: David L Stevens <dlstevens@us.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [IPV4]: multicast API "join" issuesDavid L Stevens2005-07-091-6/+12
| | | | | | | | | | | | | | | | 1) In the full-state API when imsf_numsrc == 0 errno should be "0", but returns EADDRNOTAVAIL 2) An illegal filter mode change errno should be EINVAL, but returns EADDRNOTAVAIL 3) Trying to do an any-source option without IP_ADD_MEMBERSHIP errno should be EINVAL, but returns EADDRNOTAVAIL 4) Adds comments for the less obvious error return values Signed-off-by: David L Stevens <dlstevens@us.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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