aboutsummaryrefslogtreecommitdiff
path: root/net/ipv6
AgeCommit message (Collapse)Author
2006-12-02[IPV6]: Misc endianness annotations.Al Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: David S. Miller <davem@davemloft.net>
2006-12-02[NET]: Supporting UDP-Lite (RFC 3828) in LinuxGerrit Renker
This is a revision of the previously submitted patch, which alters the way files are organized and compiled in the following manner: * UDP and UDP-Lite now use separate object files * source file dependencies resolved via header files net/ipv{4,6}/udp_impl.h * order of inclusion files in udp.c/udplite.c adapted accordingly [NET/IPv4]: Support for the UDP-Lite protocol (RFC 3828) This patch adds support for UDP-Lite to the IPv4 stack, provided as an extension to the existing UDPv4 code: * generic routines are all located in net/ipv4/udp.c * UDP-Lite specific routines are in net/ipv4/udplite.c * MIB/statistics support in /proc/net/snmp and /proc/net/udplite * shared API with extensions for partial checksum coverage [NET/IPv6]: Extension for UDP-Lite over IPv6 It extends the existing UDPv6 code base with support for UDP-Lite in the same manner as per UDPv4. In particular, * UDPv6 generic and shared code is in net/ipv6/udp.c * UDP-Litev6 specific extensions are in net/ipv6/udplite.c * MIB/statistics support in /proc/net/snmp6 and /proc/net/udplite6 * support for IPV6_ADDRFORM * aligned the coding style of protocol initialisation with af_inet6.c * made the error handling in udpv6_queue_rcv_skb consistent; to return `-1' on error on all error cases * consolidation of shared code [NET]: UDP-Lite Documentation and basic XFRM/Netfilter support The UDP-Lite patch further provides * API documentation for UDP-Lite * basic xfrm support * basic netfilter support for IPv4 and IPv6 (LOG target) Signed-off-by: Gerrit Renker <gerrit@erg.abdn.ac.uk> Signed-off-by: David S. Miller <davem@davemloft.net>
2006-12-02[IPv6] prefix: Convert RTM_NEWPREFIX notifications to use the new netlink apiThomas Graf
RTM_GETPREFIX is completely unused and is thus removed. Signed-off-by: Thomas Graf <tgraf@suug.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
2006-12-02[IPv6] iflink: Convert IPv6's RTM_GETLINK to use the new netlink apiThomas Graf
By replacing the current method of exporting the device configuration which included allocating a temporary buffer, copying ipv6_devconf into it and copying that buffer into the message with a method that uses nla_reserve() allowing to copy the device configuration directly into the skb data buffer, a GFP_ATOMIC allocation could be removed. Signed-off-by: Thomas Graf <tgraf@suug.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
2006-12-02[TCP]: Fix some warning when MD5 is disabled.David S. Miller
Just some mis-placed ifdefs: net/ipv4/tcp_minisocks.c: In function ‘tcp_twsk_destructor’: net/ipv4/tcp_minisocks.c:364: warning: unused variable ‘twsk’ net/ipv6/tcp_ipv6.c:1846: warning: ‘tcp_sock_ipv6_specific’ defined but not used net/ipv6/tcp_ipv6.c:1877: warning: ‘tcp_sock_ipv6_mapped_specific’ defined but not used Signed-off-by: David S. Miller <davem@davemloft.net>
2006-12-02[TCP]: MD5 Signature Option (RFC2385) support.YOSHIFUJI Hideaki
Based on implementation by Rick Payne. Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2006-12-02[TCP/DCCP]: Introduce net_xmit_evalGerrit Renker
Throughout the TCP/DCCP (and tunnelling) code, it often happens that the return code of a transmit function needs to be tested against NET_XMIT_CN which is a value that does not indicate a strict error condition. This patch uses a macro for these recurring situations which is consistent with the already existing macro net_xmit_errno, saving on duplicated code. Signed-off-by: Gerrit Renker <gerrit@erg.abdn.ac.uk> Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com>
2006-12-02[IPv6]: Only modify checksum for UDPBrian Haley
Only change upper-layer checksum from 0 to 0xFFFF for UDP (as RFC 768 states), not for others as RFC 4443 doesn't require it. Signed-off-by: Brian Haley <brian.haley@hp.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2006-12-02[IPv6] rules: Remove bogus tos validation checkThomas Graf
Noticed by Al Viro: (frh->tos & ~IPV6_FLOWINFO_MASK)) where IPV6_FLOWINFO_MASK is htonl(0xfffffff) and frh->tos is u8, which makes no sense here... Signed-off-by: Thomas Graf <tgraf@suug.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
2006-12-02[NETLINK]: Do precise netlink message allocations where possibleThomas Graf
Account for the netlink message header size directly in nlmsg_new() instead of relying on the caller calculate it correctly. Replaces error handling of message construction functions when constructing notifications with bug traps since a failure implies a bug in calculating the size of the skb. Signed-off-by: Thomas Graf <tgraf@suug.ch> Acked-by: Paul Moore <paul.moore@hp.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2006-12-02[TCP]: Remove dead code in init_sequenceGerrit Renker
This removes two redundancies: 1) The test (skb->protocol == htons(ETH_P_IPV6) in tcp_v6_init_sequence() is always true, due to * tcp_v6_conn_request() is the only function calling this one * tcp_v6_conn_request() redirects all skb's with ETH_P_IP protocol to tcp_v4_conn_request() [ cf. top of tcp_v6_conn_request()] 2) The first argument, `struct sock *sk' of tcp_v{4,6}_init_sequence() is never used. Signed-off-by: Gerrit Renker <gerrit@erg.abdn.ac.uk> Signed-off-by: David S. Miller <davem@davemloft.net>
2006-12-02[IPV6]: Per-interface statistics support.YOSHIFUJI Hideaki
For IP MIB (RFC4293). Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
2006-12-02[IPV6]: Introduce ip6_dst_idev() to get inet6_dev{} stored in dst_entry{}.YOSHIFUJI Hideaki
Otherwise, we will see a lot of casts... Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
2006-12-02[IPV6] ROUTE: Use &rt->u.dst instead of cast.YOSHIFUJI Hideaki
Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
2006-12-02[IPV6] ROUTE: Use macros to format /proc/net/ipv6_route.YOSHIFUJI Hideaki
Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
2006-12-02[TCP]: Don't set SKB owner in tcp_transmit_skb().David S. Miller
The data itself is already charged to the SKB, doing the skb_set_owner_w() just generates a lot of noise and extra atomics we don't really need. Lmbench improvements on lat_tcp are minimal: before: TCP latency using localhost: 23.2701 microseconds TCP latency using localhost: 23.1994 microseconds TCP latency using localhost: 23.2257 microseconds after: TCP latency using localhost: 22.8380 microseconds TCP latency using localhost: 22.9465 microseconds TCP latency using localhost: 22.8462 microseconds Signed-off-by: David S. Miller <davem@davemloft.net>
2006-12-02[IPV6] tcp: Fix typo _read_mostly --> __read_mostly.David S. Miller
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-12-02[NET]: Size listen hash tables using backlog hintEric Dumazet
We currently allocate a fixed size (TCP_SYNQ_HSIZE=512) slots hash table for each LISTEN socket, regardless of various parameters (listen backlog for example) On x86_64, this means order-1 allocations (might fail), even for 'small' sockets, expecting few connections. On the contrary, a huge server wanting a backlog of 50000 is slowed down a bit because of this fixed limit. This patch makes the sizing of listen hash table a dynamic parameter, depending of : - net.core.somaxconn tunable (default is 128) - net.ipv4.tcp_max_syn_backlog tunable (default : 256, 1024 or 128) - backlog value given by user application (2nd parameter of listen()) For large allocations (bigger than PAGE_SIZE), we use vmalloc() instead of kmalloc(). We still limit memory allocation with the two existing tunables (somaxconn & tcp_max_syn_backlog). So for standard setups, this patch actually reduce RAM usage. Signed-off-by: Eric Dumazet <dada1@cosmosbay.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2006-12-02[NET] rules: Share common attribute validation policyThomas Graf
Move the attribute policy for the non-specific attributes into net/fib_rules.h and include it in the respective protocols. Signed-off-by: Thomas Graf <tgraf@suug.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
2006-12-02[NET] rules: Protocol independant mark selectorThomas Graf
Move mark selector currently implemented per protocol into the protocol independant part. Signed-off-by: Thomas Graf <tgraf@suug.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
2006-12-02[NET]: Rethink mark field in struct flowiThomas Graf
Now that all protocols have been made aware of the mark field it can be moved out of the union thus simplyfing its usage. The config options in the IPv4/IPv6/DECnet subsystems to enable respectively disable mark based routing only obfuscate the code with ifdefs, the cost for the additional comparison in the flow key is insignificant, and most distributions have all these options enabled by default anyway. Therefore it makes sense to remove the config options and enable mark based routing by default. Signed-off-by: Thomas Graf <tgraf@suug.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
2006-12-02[NET]: Turn nfmark into generic markThomas Graf
nfmark is being used in various subsystems and has become the defacto mark field for all kinds of packets. Therefore it makes sense to rename it to `mark' and remove the dependency on CONFIG_NETFILTER. Signed-off-by: Thomas Graf <tgraf@suug.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
2006-12-02[IPV6]: ip6_output annotationsAl Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: David S. Miller <davem@davemloft.net>
2006-12-02[IPV6]: annotate inet6_csk_search_req()Al Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: David S. Miller <davem@davemloft.net>
2006-12-02[IPV6]: flowlabels are net-endianAl Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: David S. Miller <davem@davemloft.net>
2006-12-02[IPV6]: annotate ipv6 mcastAl Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: David S. Miller <davem@davemloft.net>
2006-12-02[IPV6]: 'info' argument of ipv6 ->err_handler() is net-endianAl Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: David S. Miller <davem@davemloft.net>
2006-12-02[XFRM]: misc annotationsAl Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: David S. Miller <davem@davemloft.net>
2006-12-02[IPV6]: annotate inet6_hashtablesAl Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: David S. Miller <davem@davemloft.net>
2006-12-02[IPV6] NDISC: Calculate packet length correctly for allocation.David S. Miller
MAX_HEADER does not include the ipv6 header length in it, so we need to add it in explicitly. With help from YOSHIFUJI Hideaki. Signed-off-by: David S. Miller <davem@davemloft.net>
2006-11-21[IPV6]: Fix address/interface handling in UDP and DCCP, according to the ↵YOSHIFUJI Hideaki
scoping architecture. TCP and RAW do not have this issue. Closes Bug #7432. Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2006-11-21[IPV6] IP6TUNNEL: Add missing nf_reset() on input path.Yasuyuki Kozakai
Signed-off-by: Yasuyuki Kozakai <yasuyuki.kozakai@toshiba.co.jp> Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
2006-11-21[IPV6] IP6TUNNEL: Delete all tunnel device when unloading module.Yasuyuki Kozakai
Signed-off-by: Yasuyuki Kozakai <yasuyuki.kozakai@toshiba.co.jp> Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
2006-11-21[IPV6] ROUTE: Do not enable router reachability probing in router mode.YOSHIFUJI Hideaki
RFC4191 explicitly states that the procedures are applicable to hosts only. We should not have changed behavior of routers. Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
2006-11-21[IPV6] ROUTE: Prefer reachable nexthop only if the caller requests.YOSHIFUJI Hideaki
Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
2006-11-21[IPV6] ROUTE: Try to use router which is not known unreachable.YOSHIFUJI Hideaki
Only routers in "FAILED" state should be considered unreachable. Otherwise, we do not try to use speicific routes unless all least specific routers are considered unreachable. Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
2006-11-15[NETFILTER]: ip6_tables: use correct nexthdr value in ipv6_find_hdr()Patrick McHardy
nexthdr is NEXTHDR_FRAGMENT, the nexthdr value from the fragment header is hp->nexthdr. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2006-11-15[NETFILTER]: Use pskb_trim in {ip,ip6,nfnetlink}_queuePatrick McHardy
Based on patch by James D. Nurmi: I've got some code very dependant on nfnetlink_queue, and turned up a large number of warns coming from skb_trim. While it's quite possibly my code, having not seen it on older kernels made me a bit suspect. Anyhow, based on some googling I turned up this thread: http://lkml.org/lkml/2006/8/13/56 And believe the issue to be related, so attached is a small patch to the kernel -- not sure if this is completely correct, but for anyone else hitting the WARN_ON(1) in skbuff.h, it might be helpful.. Signed-off-by: James D. Nurmi <jdnurmi@gmail.com> Ported to ip6_queue and nfnetlink_queue and added return value checks. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2006-11-05[IPV6]: Give sit driver an appropriate module alias.Patrick McHardy
It would be nice to keep things working even with this built as a module, it took me some time to realize my IPv6 tunnel was broken because of the missing sit module. This module alias fixes things until distributions have added an appropriate alias to modprobe.conf. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2006-11-05[IPV6]: Add ndisc_netdev_notifier unregister.Dmitry Mishin
If inet6_init() fails later than ndisc_init() call, or IPv6 module is unloaded, ndisc_netdev_notifier call remains in the list and will follows in oops later. Signed-off-by: Dmitry Mishin <dim@openvz.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2006-11-01[IPV6]: File the fingerprints off ah6->spi/esp6->spiAl Viro
In theory these are opaque 32bit values. However, we end up allocating them sequentially in host-endian and stick unchanged on the wire. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: David S. Miller <davem@davemloft.net>
2006-10-31[IPV6]: fix flowlabel seqfile handlingJames Morris
There's a bug in the seqfile show operation for flowlabel objects, where each hash chain is traversed cumulatively for each element. The following function is called for each element of each chain: static void ip6fl_fl_seq_show(struct seq_file *seq, struct ip6_flowlabel *fl) { while(fl) { seq_printf... fl = fl->next; } } Thus, objects can appear mutliple times when reading /proc/net/ip6_flowlabel, as the above is called for each element in the chain. The solution is to remove the while() loop from the above, and traverse each chain exactly once, per the patch below. This also removes the ip6fl_fl_seq_show() function, which does nothing else. Signed-off-by: James Morris <jmorris@namei.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2006-10-30[IPV6]: return EINVAL for invalid address with flowlabel lease requestJames Morris
Currently, when an application requests a lease for a flowlabel via the IPV6_FLOWLABEL_MGR socket option, no error is returned if an invalid type of destination address is supplied as part of the request, leading to a silent failure. This patch ensures that EINVAL is returned to the application in this case. Signed-off-by: James Morris <jmorris@namei.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2006-10-30[NETFILTER]: Missed and reordered checks in {arp,ip,ip6}_tablesDmitry Mishin
There is a number of issues in parsing user-provided table in translate_table(). Malicious user with CAP_NET_ADMIN may crash system by passing special-crafted table to the *_tables. The first issue is that mark_source_chains() function is called before entry content checks. In case of standard target, mark_source_chains() function uses t->verdict field in order to determine new position. But the check, that this field leads no further, than the table end, is in check_entry(), which is called later, than mark_source_chains(). The second issue, that there is no check that target_offset points inside entry. If so, *_ITERATE_MATCH macro will follow further, than the entry ends. As a result, we'll have oops or memory disclosure. And the third issue, that there is no check that the target is completely inside entry. Results are the same, as in previous issue. Signed-off-by: Dmitry Mishin <dim@openvz.org> Acked-by: Kirill Korotaev <dev@openvz.org> Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2006-10-30[NETFILTER]: remove masq/NAT from ip6tables Kconfig helpPatrick McHardy
Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2006-10-30[IPV6]: fix lockup via /proc/net/ip6_flowlabelJames Morris
There's a bug in the seqfile handling for /proc/net/ip6_flowlabel, where, after finding a flowlabel, the code will loop forever not finding any further flowlabels, first traversing the rest of the hash bucket then just looping. This patch fixes the problem by breaking after the hash bucket has been traversed. Note that this bug can cause lockups and oopses, and is trivially invoked by an unpriveleged user. Signed-off-by: James Morris <jmorris@namei.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2006-10-30[NET]: fix uaccess handlingHeiko Carstens
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2006-10-24[NETFILTER]: Fix ip6_tables extension header bypass bugPatrick McHardy
As reported by Mark Dowd <Mark_Dowd@McAfee.com>, ip6_tables is susceptible to a fragmentation attack causing false negatives on extension header matches. When extension headers occur in the non-first fragment after the fragment header (possibly with an incorrect nexthdr value in the fragment header) a rule looking for this extension header will never match. Drop fragments that are at offset 0 and don't contain the final protocol header regardless of the ruleset, since this should not happen normally. Since all extension headers are before the protocol header this makes sure an extension header is either not present or in the first fragment, where we can properly parse it. With help from Yasuyuki KOZAKAI <yasuyuki.kozakai@toshiba.co.jp>. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2006-10-24[NETFILTER]: Fix ip6_tables protocol bypass bugPatrick McHardy
As reported by Mark Dowd <Mark_Dowd@McAfee.com>, ip6_tables is susceptible to a fragmentation attack causing false negatives on protocol matches. When the protocol header doesn't follow the fragment header immediately, the fragment header contains the protocol number of the next extension header. When the extension header and the protocol header are sent in a second fragment a rule like "ip6tables .. -p udp -j DROP" will never match. Drop fragments that are at offset 0 and don't contain the final protocol header regardless of the ruleset, since this should not happen normally. With help from Yasuyuki KOZAKAI <yasuyuki.kozakai@toshiba.co.jp>. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2006-10-21[IPv6] fib: initialize tb6_lock in common place to give lockdep a keyThomas Graf
Signed-off-by: Thomas Graf <tgraf@suug.ch> Signed-off-by: David S. Miller <davem@davemloft.net>