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* [SECURITY]: TCP/UDP getpeersecCatherine Zhang2006-03-21
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch implements an application of the LSM-IPSec networking controls whereby an application can determine the label of the security association its TCP or UDP sockets are currently connected to via getsockopt and the auxiliary data mechanism of recvmsg. Patch purpose: This patch enables a security-aware application to retrieve the security context of an IPSec security association a particular TCP or UDP socket is using. The application can then use this security context to determine the security context for processing on behalf of the peer at the other end of this connection. In the case of UDP, the security context is for each individual packet. An example application is the inetd daemon, which could be modified to start daemons running at security contexts dependent on the remote client. Patch design approach: - Design for TCP The patch enables the SELinux LSM to set the peer security context for a socket based on the security context of the IPSec security association. The application may retrieve this context using getsockopt. When called, the kernel determines if the socket is a connected (TCP_ESTABLISHED) TCP socket and, if so, uses the dst_entry cache on the socket to retrieve the security associations. If a security association has a security context, the context string is returned, as for UNIX domain sockets. - Design for UDP Unlike TCP, UDP is connectionless. This requires a somewhat different API to retrieve the peer security context. With TCP, the peer security context stays the same throughout the connection, thus it can be retrieved at any time between when the connection is established and when it is torn down. With UDP, each read/write can have different peer and thus the security context might change every time. As a result the security context retrieval must be done TOGETHER with the packet retrieval. The solution is to build upon the existing Unix domain socket API for retrieving user credentials. Linux offers the API for obtaining user credentials via ancillary messages (i.e., out of band/control messages that are bundled together with a normal message). Patch implementation details: - Implementation for TCP The security context can be retrieved by applications using getsockopt with the existing SO_PEERSEC flag. As an example (ignoring error checking): getsockopt(sockfd, SOL_SOCKET, SO_PEERSEC, optbuf, &optlen); printf("Socket peer context is: %s\n", optbuf); The SELinux function, selinux_socket_getpeersec, is extended to check for labeled security associations for connected (TCP_ESTABLISHED == sk->sk_state) TCP sockets only. If so, the socket has a dst_cache of struct dst_entry values that may refer to security associations. If these have security associations with security contexts, the security context is returned. getsockopt returns a buffer that contains a security context string or the buffer is unmodified. - Implementation for UDP To retrieve the security context, the application first indicates to the kernel such desire by setting the IP_PASSSEC option via getsockopt. Then the application retrieves the security context using the auxiliary data mechanism. An example server application for UDP should look like this: toggle = 1; toggle_len = sizeof(toggle); setsockopt(sockfd, SOL_IP, IP_PASSSEC, &toggle, &toggle_len); recvmsg(sockfd, &msg_hdr, 0); if (msg_hdr.msg_controllen > sizeof(struct cmsghdr)) { cmsg_hdr = CMSG_FIRSTHDR(&msg_hdr); if (cmsg_hdr->cmsg_len <= CMSG_LEN(sizeof(scontext)) && cmsg_hdr->cmsg_level == SOL_IP && cmsg_hdr->cmsg_type == SCM_SECURITY) { memcpy(&scontext, CMSG_DATA(cmsg_hdr), sizeof(scontext)); } } ip_setsockopt is enhanced with a new socket option IP_PASSSEC to allow a server socket to receive security context of the peer. A new ancillary message type SCM_SECURITY. When the packet is received we get the security context from the sec_path pointer which is contained in the sk_buff, and copy it to the ancillary message space. An additional LSM hook, selinux_socket_getpeersec_udp, is defined to retrieve the security context from the SELinux space. The existing function, selinux_socket_getpeersec does not suit our purpose, because the security context is copied directly to user space, rather than to kernel space. Testing: We have tested the patch by setting up TCP and UDP connections between applications on two machines using the IPSec policies that result in labeled security associations being built. For TCP, we can then extract the peer security context using getsockopt on either end. For UDP, the receiving end can retrieve the security context using the auxiliary data mechanism of recvmsg. Signed-off-by: Catherine Zhang <cxzhang@watson.ibm.com> Acked-by: James Morris <jmorris@namei.org> Acked-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
* [XFRM]: Fix aevent related crashPatrick McHardy2006-03-21
| | | | | | | | | | | | | | When xfrm_user isn't loaded xfrm_nl is NULL, which makes IPsec crash because xfrm_aevent_is_on passes the NULL pointer to netlink_has_listeners as socket. A second problem is that the xfrm_nl pointer is not cleared when the socket is releases at module unload time. Protect references of xfrm_nl from outside of xfrm_user by RCU, check that the socket is present in xfrm_aevent_is_on and set it to NULL when unloading xfrm_user. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
* [TCP]: sysctl to allow TCP window > 32767 sans wscaleRick Jones2006-03-21
| | | | | | | | | | | | | | | | Back in the dark ages, we had to be conservative and only allow 15-bit window fields if the window scale option was not negotiated. Some ancient stacks used a signed 16-bit quantity for the window field of the TCP header and would get confused. Those days are long gone, so we can use the full 16-bits by default now. There is a sysctl added so that we can still interact with such old stacks Signed-off-by: Rick Jones <rick.jones2@hp.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [IPV4] ARP: Alloc acceptance of unsolicited ARP via netdevice sysctl.Neil Horman2006-03-21
| | | | | Signed-off-by: Neil Horman <nhorman@tuxdriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [NET]: sem2mutex part 2Ingo Molnar2006-03-21
| | | | | | | | | | | Semaphore to mutex conversion. The conversion was generated via scripts, and the result was validated automatically via a script as well. Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* [NET] sem2mutex: net/Arjan van de Ven2006-03-21
| | | | | | | | | | | | Semaphore to mutex conversion. The conversion was generated via scripts, and the result was validated automatically via a script as well. Signed-off-by: Arjan van de Ven <arjan@infradead.org> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* [NET]: dev_put/dev_hold cleanupStephen Hemminger2006-03-21
| | | | | | | | | 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>
* [TG3]: Add 5787 and 5754 basic supportMichael Chan2006-03-21
| | | | | | | Add basic support for 2 new chips 5787 and 5754. Signed-off-by: Michael Chan <mchan@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [NET] rtnetlink: Add RTPROT entry for Netsukuku.Alpt2006-03-21
| | | | | | | | The Netsukuku daemon is using the same number to mark its routes, you can see it here: http://hinezumilabs.org/cgi-bin/viewcvs.cgi/netsukuku/src/krnl_route.h?rev=HEAD&content-type=text/vnd.viewcvs-markup Signed-off-by: David S. Miller <davem@davemloft.net>
* [NET]: Move destructor from neigh->ops to neigh_paramsMichael S. Tsirkin2006-03-21
| | | | | | | | | | | | | | | | | | | | struct neigh_ops currently has a destructor field, which no in-kernel drivers outside of infiniband use. The infiniband/ulp/ipoib in-tree driver stashes some info in the neighbour structure (the results of the second-stage lookup from ARP results to real link-level path), and it uses neigh->ops->destructor to get a callback so it can clean up this extra info when a neighbour is freed. We've run into problems with this: since the destructor is in an ops field that is shared between neighbours that may belong to different net devices, there's no way to set/clear it safely. The following patch moves this field to neigh_parms where it can be safely set, together with its twin neigh_setup. Two additional patches in the patch series update ipoib to use this new interface. Signed-off-by: Michael S. Tsirkin <mst@mellanox.co.il> Signed-off-by: Roland Dreier <rolandd@cisco.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [NET]: Convert RTNL to mutex.Stephen Hemminger2006-03-21
| | | | | | | | 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>
* [IRDA]: TOIM3232 dongle supportDavid Basden2006-03-21
| | | | | | | | | | | | Here goes a patch for supporting TOIM3232 based serial IrDA dongles. The code is based on the tekram dongle code. It's been tested with a TOIM3232 based IRWave 320S dongle. It may work for TOIM4232 dongles, although it's not been tested. Signed-off-by: David Basden <davidb-irda@rcpt.to> Signed-off-by: Samuel Ortiz <samuel.ortiz@nokia.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [ICSK]: Introduce inet_csk_ctl_sock_createArnaldo Carvalho de Melo2006-03-21
| | | | | | | Consolidating open coded sequences in tcp and dccp, v4 and v6. Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [TCP] mtu probing: move tcp-specific data out of inet_connection_sockJohn Heffner2006-03-21
| | | | | | | | This moves some TCP-specific MTU probing state out of inet_connection_sock back to tcp_sock. Signed-off-by: John Heffner <jheffner@psc.edu> Signed-off-by: David S. Miller <davem@davemloft.net>
* [AF_UNIX]: scm: better initializationBenjamin LaHaise2006-03-21
| | | | | | | | | | | | | | | | | | Instead of doing a memset then initialization of the fields of the scm structure, just initialize all the members explicitly. Prevent reloading of current on x86 and x86-64 by storing the value in a local variable for subsequent dereferences. This is worth a ~7KB/s increase in af_unix bandwidth. Note that we avoid the issues surrounding potentially uninitialized members of the ucred structure by constructing a struct ucred instead of assigning the members individually, which forces the compiler to zero any padding. [ I modified the patch not to use the aggregate assignment since gcc-3.4.x and earlier cannot optimize that properly at all even though gcc-4.0.x and later can -DaveM ] Signed-off-by: Benjamin LaHaise <benjamin.c.lahaise@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [NET]: Uninline kfree_skb and allow NULL argumentJörn Engel2006-03-21
| | | | | | | | | | | | o Uninline kfree_skb, which saves some 15k of object code on my notebook. o Allow kfree_skb to be called with a NULL argument. Subsequent patches can remove conditional from drivers and further reduce source and object size. Signed-off-by: Jörn Engel <joern@wohnheim.fh-wedel.de> Signed-off-by: David S. Miller <davem@davemloft.net>
* [XFRM]: Rearrange struct xfrm_aevent_id for better compatibility.Jamal Hadi Salim2006-03-21
| | | | | | | | | struct xfrm_aevent_id needs to be 32-bit + 64-bit align friendly. Based upon suggestions from Yoshifuji. Signed-off-by: Jamal Hadi Salim <hadi@cyberus.ca> Signed-off-by: David S. Miller <davem@davemloft.net>
* [DCCP] feat: Introduce sysctls for the default featuresArnaldo Carvalho de Melo2006-03-20
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | [root@qemu ~]# for a in /proc/sys/net/dccp/default/* ; do echo $a ; cat $a ; done /proc/sys/net/dccp/default/ack_ratio 2 /proc/sys/net/dccp/default/rx_ccid 3 /proc/sys/net/dccp/default/send_ackvec 1 /proc/sys/net/dccp/default/send_ndp 1 /proc/sys/net/dccp/default/seq_window 100 /proc/sys/net/dccp/default/tx_ccid 3 [root@qemu ~]# So if wanting to test ccid3 as the tx CCID one can just do: [root@qemu ~]# echo 3 > /proc/sys/net/dccp/default/tx_ccid [root@qemu ~]# echo 2 > /proc/sys/net/dccp/default/rx_ccid [root@qemu ~]# cat /proc/sys/net/dccp/default/[tr]x_ccid 2 3 [root@qemu ~]# Of course we also need the setsockopt for each app to tell its preferences, but for testing or defining something other than CCID2 as the default for apps that don't explicitely set their preference the sysctl interface is handy. Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [DCCP]: Make CCID2 be the defaultArnaldo Carvalho de Melo2006-03-20
| | | | | | | | | | | | | As per the draft. This fixes the build when netfilter dccp components are built and dccp isn't. Thanks to Reuben Farrelly for reporting this. The following changesets will introduce /proc/sys/net/dccp/defaults/ to give more flexibility to DCCP developers and testers while apps doesn't use setsockopt to specify the desired CCID, etc. Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [DCCP]: sparse endianness annotationsAndrea Bittau2006-03-20
| | | | | | | | | | This also fixes the layout of dccp_hdr short sequence numbers, problem was not fatal now as we only support long (48 bits) sequence numbers. Signed-off-by: Andrea Bittau <a.bittau@cs.ucl.ac.uk> Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: David S. Miller <davem@davemloft.net>
* [NETFILTER]: Fix skb->nf_bridge lifetime issuesPatrick McHardy2006-03-20
| | | | | | | | | | | | | | | | | | | | | | The bridge netfilter code simulates the NF_IP_PRE_ROUTING hook and skips the real hook by registering with high priority and returning NF_STOP if skb->nf_bridge is present and the BRNF_NF_BRIDGE_PREROUTING flag is not set. The flag is only set during the simulated hook. Because skb->nf_bridge is only freed when the packet is destroyed, the packet will not only skip the first invocation of NF_IP_PRE_ROUTING, but in the case of tunnel devices on top of the bridge also all further ones. Forwarded packets from a bridge encapsulated by a tunnel device and sent as locally outgoing packet will also still have the incorrect bridge information from the input path attached. We already have nf_reset calls on all RX/TX paths of tunnel devices, so simply reset the nf_bridge field there too. As an added bonus, the bridge information for locally delivered packets is now also freed when the packet is queued to a socket. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
* [DCCP] CCID: Improve CCID infrastructureArnaldo Carvalho de Melo2006-03-20
| | | | | | | | | | | | | | | | | | | 1. No need for ->ccid_init nor ->ccid_exit, this is what module_{init,exit} does and anynways neither ccid2 nor ccid3 were using it. 2. Rename struct ccid to struct ccid_operations and introduce struct ccid with a pointer to ccid_operations and rigth after it the rx or tx private state. 3. Remove the pointer to the state of the half connections from struct dccp_sock, now its derived thru ccid_priv() from the ccid pointer. Now we also can implement the setsockopt for changing the CCID easily as no ccid init routines can affect struct dccp_sock in any way that prevents other CCIDs from working if a CCID switch operation is asked by apps. Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [IPSEC]: Sync series - policy expiresJamal Hadi Salim2006-03-20
| | | | | | | | This is similar to the SA expire insertion patch - only it inserts expires for SP. Signed-off-by: Jamal Hadi Salim <hadi@cyberus.ca> Signed-off-by: David S. Miller <davem@davemloft.net>
* [IPSEC]: Sync series - SA expiresJamal Hadi Salim2006-03-20
| | | | | | | | | This patch allows a user to insert SA expires. This is useful to do on an HA backup for the case of byte counts but may not be very useful for the case of time based expiry. Signed-off-by: Jamal Hadi Salim <hadi@cyberus.ca> Signed-off-by: David S. Miller <davem@davemloft.net>
* [IPSEC]: Sync series - acquire insertJamal Hadi Salim2006-03-20
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This introduces a feature similar to the one described in RFC 2367: " ... the application needing an SA sends a PF_KEY SADB_ACQUIRE message down to the Key Engine, which then either returns an error or sends a similar SADB_ACQUIRE message up to one or more key management applications capable of creating such SAs. ... ... The third is where an application-layer consumer of security associations (e.g. an OSPFv2 or RIPv2 daemon) needs a security association. Send an SADB_ACQUIRE message from a user process to the kernel. <base, address(SD), (address(P),) (identity(SD),) (sensitivity,) proposal> The kernel returns an SADB_ACQUIRE message to registered sockets. <base, address(SD), (address(P),) (identity(SD),) (sensitivity,) proposal> The user-level consumer waits for an SADB_UPDATE or SADB_ADD message for its particular type, and then can use that association by using SADB_GET messages. " An app such as OSPF could then use ipsec KM to get keys Signed-off-by: Jamal Hadi Salim <hadi@cyberus.ca> Signed-off-by: David S. Miller <davem@davemloft.net>
* [IPSEC]: Sync series - core changesJamal Hadi Salim2006-03-20
| | | | | | | | This patch provides the core functionality needed for sync events for ipsec. Derived work of Krisztian KOVACS <hidden@balabit.hu> Signed-off-by: Jamal Hadi Salim <hadi@cyberus.ca> Signed-off-by: David S. Miller <davem@davemloft.net>
* [NETLINK]: Add netlink_has_listeners for avoiding unneccessary event message ↵Patrick McHardy2006-03-20
| | | | | | | | | | | | | | | | generation Keep a bitmask of multicast groups with subscribed listeners to let netlink users check for listeners before generating multicast messages. Queries don't perform any locking, which may result in false positives, it is guaranteed however that any new subscriptions are visible before bind() or setsockopt() return. Signed-off-by: Patrick McHardy <kaber@trash.net> ACKed-by: Jamal Hadi Salim<hadi@cyberus.ca> Signed-off-by: David S. Miller <davem@davemloft.net>
* [NETFILTER]: ctnetlink: avoid unneccessary event message generationPatrick McHardy2006-03-20
| | | | | | | | Avoid unneccessary event message generation by checking for netlink listeners before building a message. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
* [NETFILTER]: x_tables: replace IPv4/IPv6 policy match by address family ↵Patrick McHardy2006-03-20
| | | | | | | independant version Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
* [NETFILTER]: Move ip6_masked_addrcmp to include/net/ipv6.hPatrick McHardy2006-03-20
| | | | | | | | Replace netfilter's ip6_masked_addrcmp by a more efficient version in include/net/ipv6.h to make it usable without module dependencies. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
* [NETFILTER]: x_tables: pass registered match/target data to match/target ↵Patrick McHardy2006-03-20
| | | | | | | | | | functions This allows to make decisions based on the revision (and address family with a follow-up patch) at runtime. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
* [NETFILTER]: xt_tables: add centralized error checkingPatrick McHardy2006-03-20
| | | | | | | | | Introduce new functions for common match/target checks (private data size, valid hooks, valid tables and valid protocols) to get more consistent error reporting and to avoid each module duplicating them. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
* [DCCP]: Set the default CCID according to kernel config selectionIan McDonald2006-03-20
| | | | | | | | Now CCID2 is the default, as stated in the RFC drafts, but we allow a config where just CCID3 is built, where CCID3 becomes the default. Signed-off-by: Ian McDonald <imcdnzl@gmail.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com>
* [NETFILTER] nf_conntrack: clean up to reduce size of 'struct nf_conn'Harald Welte2006-03-20
| | | | | | | | | | | | | | | | | | | | This patch moves all helper related data fields of 'struct nf_conn' into a separate structure 'struct nf_conn_help'. This new structure is only present in conntrack entries for which we actually have a helper loaded. Also, this patch cleans up the nf_conntrack 'features' mechanism to resemble what the original idea was: Just glue the feature-specific data structures at the end of 'struct nf_conn', and explicitly re-calculate the pointer to it when needed rather than keeping pointers around. Saves 20 bytes per conntrack on my x86_64 box. A non-helped conntrack is 276 bytes. We still need to save another 20 bytes in order to fit into to target of 256bytes. Signed-off-by: Harald Welte <laforge@netfilter.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* [TCP]: MTU probingJohn Heffner2006-03-20
| | | | | | | | | Implementation of packetization layer path mtu discovery for TCP, based on the internet-draft currently found at <http://www.ietf.org/internet-drafts/draft-ietf-pmtud-method-05.txt>. Signed-off-by: John Heffner <jheffner@psc.edu> Signed-off-by: David S. Miller <davem@davemloft.net>
* [TG3]: Add support for 5714S and 5715SMichael Chan2006-03-20
| | | | | | | Add support for 5714S and 5715S. Signed-off-by: Michael Chan <mchan@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [DCCP]: Initial feature negotiation implementationAndrea Bittau2006-03-20
| | | | | | | | | | | | | | | Still needs more work, but boots and doesn't crashes, even does some negotiation! 18:38:52.174934 127.0.0.1.43458 > 127.0.0.1.5001: request <change_l ack_ratio 2, change_r ccid 2, change_l ccid 2> 18:38:52.218526 127.0.0.1.5001 > 127.0.0.1.43458: response <nop, nop, change_l ack_ratio 2, confirm_r ccid 2 2, confirm_l ccid 2 2, confirm_r ack_ratio 2> 18:38:52.185398 127.0.0.1.43458 > 127.0.0.1.5001: <nop, confirm_r ack_ratio 2, ack_vector0 0x00, elapsed_time 212> :-) Signed-off-by: Andrea Bittau <a.bittau@cs.ucl.ac.uk> Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [DCCP] CCID2: Initial CCID2 (TCP-Like) implementationAndrea Bittau2006-03-20
| | | | | | | | | | | | Original work by Andrea Bittau, Arnaldo Melo cleaned up and fixed several issues on the merge process. For now CCID2 was turned the default for all SOCK_DCCP connections, but this will be remedied soon with the merge of the feature negotiation code. Signed-off-by: Andrea Bittau <a.bittau@cs.ucl.ac.uk> Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [LIST]: Introduce list_for_each_entry_fromArnaldo Carvalho de Melo2006-03-20
| | | | | | | For iterating over list of given type continuing from existing point. Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [LIST]: Introduce list_for_each_entry_safe_fromArnaldo Carvalho de Melo2006-03-20
| | | | | | | | For iterate over list of given type from existing point safe against removal of list entry. Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [NETFILTER] nfnetlink_log: add sequence numbers for log eventsHarald Welte2006-03-20
| | | | | | | | | | | | By using a sequence number for every logged netfilter event, we can determine from userspace whether logging information was lots somewhere downstream. The user has a choice of either having per-instance local sequence counters, or using a global sequence counter, or both. Signed-off-by: Harald Welte <laforge@netfilter.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* [NETFILTER] NAT sequence adjustment: Save eight bytes per conntrackHarald Welte2006-03-20
| | | | | | | | | | This patch reduces the size of 'struct ip_conntrack' on systems with NAT by eight bytes. The sequence number delta values can be int16_t, since we only support one sequence number modification per window anyway, and one such modification is not going to exceed 32kB ;) Signed-off-by: Harald Welte <laforge@netfilter.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* [NET]: Reduce size of struct sk_buff on 64 bit architecturesPatrick McHardy2006-03-20
| | | | | | | | | | Move skb->nf_mark next to skb->tc_index to remove a 4 byte hole between skb->nfmark and skb->nfct and another one between skb->users and skb->head when CONFIG_NETFILTER, CONFIG_NET_SCHED and CONFIG_NET_CLS_ACT are enabled. For all other combinations the size stays the same. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
* [NET] core: add RFC2863 operstateStefan Rompf2006-03-20
| | | | | | | | | | | | | | | | | this patch adds a dormant flag to network devices, RFC2863 operstate derived from these flags and possibility for userspace interaction. It allows drivers to signal that a device is unusable for user traffic without disabling queueing (and therefore the possibility for protocol establishment traffic to flow) and a userspace supplicant (WPA, 802.1X) to mark a device unusable without changes to the driver. It is the result of our long discussion. However I must admit that it represents what Jamal and I agreed on with compromises towards Krzysztof, but Thomas and Krzysztof still disagree with some parts. Anyway I think it should be applied. Signed-off-by: Stefan Rompf <stefan@loplof.de> Signed-off-by: David S. Miller <davem@davemloft.net>
* [IPV6]: ROUTE: Add accept_ra_rt_info_max_plen sysctl.YOSHIFUJI Hideaki2006-03-20
| | | | | Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* [IPV6]: ROUTE: Add experimental support for Route Information Option in RA ↵YOSHIFUJI Hideaki2006-03-20
| | | | | | | (RFC4191). Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* [IPV6]: ROUTE: Add router_probe_interval sysctl.YOSHIFUJI Hideaki2006-03-20
| | | | | Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* [IPV6]: ROUTE: Add accept_ra_rtr_pref sysctl.YOSHIFUJI Hideaki2006-03-20
| | | | | Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* [IPV6]: ROUTE: Add support for Router Preference (RFC4191).YOSHIFUJI Hideaki2006-03-20
| | | | | Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* [IPV6]: ROUTE: Eliminate lock for default route pointer.YOSHIFUJI Hideaki2006-03-20
| | | | | | | And prepare for more advanced router selection. Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
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