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* [PATCH] hidp __user annotationsAl Viro2007-02-09
| | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* [IPX]: Fix NULL pointer dereference on ipx unloadJiri Bohac2007-02-08
| | | | | | | | | | | Fixes a null pointer dereference when unloading the ipx module. On initialization of the ipx module, registering certain packet types can fail. When this happens, unloading the module later dereferences NULL pointers. This patch fixes that. Please apply. Signed-off-by: Jiri Bohac <jbohac@suse.cz> Signed-off-by: David S. Miller <davem@davemloft.net>
* Merge branch 'HEAD' of ↵David S. Miller2007-02-08
|\ | | | | | | | | | | | | | | master.kernel.org:/pub/scm/linux/kernel/git/herbert/crypto-2.6 Conflicts: crypto/Kconfig
| * [IPSEC]: added the entry of Camellia cipher algorithm to ealg_list[]Noriaki TAKAMIYA2007-02-06
| | | | | | | | | | | | | | This patch adds the entry of Camellia cipher algorithm to ealg_list[]. Signed-off-by: Noriaki TAKAMIYA <takamiya@po.ntts.co.jp> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* | [NET]: Fix net/socket.c warnings.David S. Miller2007-02-08
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | GCC (correctly) says: net/socket.c: In function ‘sys_sendto’: net/socket.c:1510: warning: ‘err’ may be used uninitialized in this function net/socket.c: In function ‘sys_recvfrom’: net/socket.c:1571: warning: ‘err’ may be used uninitialized in this function sock_from_file() either returns filp->private_data or it sets *err and returns NULL. Callers return "err" on NULL, but filp->private_data could be NULL. Some minor rearrangements of error handling in sys_sendto and sys_recvfrom solves the issue. Signed-off-by: David S. Miller <davem@davemloft.net>
* | [NET]: cleanup sock_from_file()Eric Dumazet2007-02-08
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | I believe dead code from sock_from_file() can be cleaned up. All sockets are now built using sock_attach_fd(), that puts the 'sock' pointer into file->private_data and &socket_file_ops into file->f_op I could not find a place where file->private_data could be set to NULL, keeping opened the file. So to get 'sock' from a 'file' pointer, either : - This is a socket file (f_op == &socket_file_ops), and we can directly get 'sock' from private_data. - This is not a socket, we return -ENOTSOCK and dont even try to find a socket via dentry/inode :) Signed-off-by: Eric Dumazet <dada1@cosmosbay.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | [NET]: change layout of ehash tableEric Dumazet2007-02-08
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | ehash table layout is currently this one : First half of this table is used by sockets not in TIME_WAIT state Second half of it is used by sockets in TIME_WAIT state. This is non optimal because of for a given hash or socket, the two chain heads are located in separate cache lines. Moreover the locks of the second half are never used. If instead of this halving, we use two list heads in inet_ehash_bucket instead of only one, we probably can avoid one cache miss, and reduce ram usage, particularly if sizeof(rwlock_t) is big (various CONFIG_DEBUG_SPINLOCK, CONFIG_DEBUG_LOCK_ALLOC settings). So we still halves the table but we keep together related chains to speedup lookups and socket state change. In this patch I did not try to align struct inet_ehash_bucket, but a future patch could try to make this structure have a convenient size (a power of two or a multiple of L1_CACHE_SIZE). I guess rwlock will just vanish as soon as RCU is plugged into ehash :) , so maybe we dont need to scratch our heads to align the bucket... Note : In case struct inet_ehash_bucket is not a power of two, we could probably change alloc_large_system_hash() (in case it use __get_free_pages()) to free the unused space. It currently allocates a big zone, but the last quarter of it could be freed. Again, this should be a temporary 'problem'. Patch tested on ipv4 tcp only, but should be OK for IPV6 and DCCP. Signed-off-by: Eric Dumazet <dada1@cosmosbay.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | [S390]: Add AF_IUCV socket supportJennifer Hunt2007-02-08
| | | | | | | | | | | | | | | | | | | | From: Jennifer Hunt <jenhunt@us.ibm.com> This patch adds AF_IUCV socket support. Signed-off-by: Frank Pavlic <fpavlic@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | [S390]: Rewrite of the IUCV base code, part 2Martin Schwidefsky2007-02-08
| | | | | | | | | | | | | | | | Add rewritten IUCV base code to net/iucv. Signed-off-by: Frank Pavlic <fpavlic@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | [X.25]: Adds /proc/net/x25/forward to view active forwarded calls.Andrew Hendry2007-02-08
| | | | | | | | | | | | | | | | View the active forwarded calls cat /proc/net/x25/forward Signed-off-by: Andrew Hendry <andrew.hendry@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | [X.25]: Adds /proc/sys/net/x25/x25_forward to control forwarding.Andrew Hendry2007-02-08
| | | | | | | | | | | | | | | | | | echo "1" > /proc/sys/net/x25/x25_forward To turn on x25_forwarding, defaults to off Requires the previous patch. Signed-off-by: Andrew Hendry <andrew.hendry@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | [X.25]: Add call forwardingAndrew Hendry2007-02-08
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Adds call forwarding to X.25, allowing it to operate like an X.25 router. Useful if one needs to manipulate X.25 traffic with tools like tc. This is an update/cleanup based off a patch submitted by Daniel Ferenci a few years ago. Thanks Alan for the feedback. Added the null check to the clones. Moved the skb_clone's into the forwarding functions. Worked ok with Cisco XoT, linux X.25 back to back, and some old NTUs/PADs. Signed-off-by: Andrew Hendry <andrew.hendry@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | [XFRM]: xfrm_migrate() needs exporting to modules.David S. Miller2007-02-08
| | | | | | | | | | | | Needed by xfrm_user and af_key. Signed-off-by: David S. Miller <davem@davemloft.net>
* | [PFKEYV2]: CONFIG_NET_KEY_MIGRATE optionShinta Sugimoto2007-02-08
| | | | | | | | | | | | | | | | | | | | Add CONFIG_NET_KEY_MIGRATE option which makes it possible for user application to send or receive MIGRATE message to/from PF_KEY socket. Signed-off-by: Shinta Sugimoto <shinta.sugimoto@ericsson.com> Signed-off-by: Masahide NAKAMURA <nakam@linux-ipv6.org> Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* | [PFKEYV2]: Extension for dynamic update of endpoint address(es)Shinta Sugimoto2007-02-08
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Extend PF_KEYv2 framework so that user application can take advantage of MIGRATE feature via PF_KEYv2 interface. User application can either send or receive an MIGRATE message to/from PF_KEY socket. Detail information can be found in the internet-draft <draft-sugimoto-mip6-pfkey-migrate>. Signed-off-by: Shinta Sugimoto <shinta.sugimoto@ericsson.com> Signed-off-by: Masahide NAKAMURA <nakam@linux-ipv6.org> Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* | [XFRM]: CONFIG_XFRM_MIGRATE optionShinta Sugimoto2007-02-08
| | | | | | | | | | | | | | | | | | | | Add CONFIG_XFRM_MIGRATE option which makes it possible for for user application to send or receive MIGRATE message to/from netlink socket. Signed-off-by: Shinta Sugimoto <shinta.sugimoto@ericsson.com> Signed-off-by: Masahide NAKAMURA <nakam@linux-ipv6.org> Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* | [XFRM]: User interface for handling XFRM_MSG_MIGRATEShinta Sugimoto2007-02-08
| | | | | | | | | | | | | | | | | | | | | | Add user interface for handling XFRM_MSG_MIGRATE. The message is issued by user application. When kernel receives the message, procedure of updating XFRM databases will take place. Signed-off-by: Shinta Sugimoto <shinta.sugimoto@ericsson.com> Signed-off-by: Masahide NAKAMURA <nakam@linux-ipv6.org> Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* | [XFRM]: Extension for dynamic update of endpoint address(es)Shinta Sugimoto2007-02-08
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Extend the XFRM framework so that endpoint address(es) in the XFRM databases could be dynamically updated according to a request (MIGRATE message) from user application. Target XFRM policy is first identified by the selector in the MIGRATE message. Next, the endpoint addresses of the matching templates and XFRM states are updated according to the MIGRATE message. Signed-off-by: Shinta Sugimoto <shinta.sugimoto@ericsson.com> Signed-off-by: Masahide NAKAMURA <nakam@linux-ipv6.org> Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* | [NETFILTER]: ip6_tables: remove redundant structure definitionsPatrick McHardy2007-02-08
| | | | | | | | | | | | | | | | Move ip6t_standard/ip6t_error_target/ip6t_error definitions to ip6_tables.h instead of defining them in each table individually. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
* | [NETFILTER]: ip6_tables: support MH matchMasahide NAKAMURA2007-02-08
| | | | | | | | | | | | | | | | | | | | | | This introduces match for Mobility Header (MH) described by Mobile IPv6 specification (RFC3775). User can specify the MH type or its range to be matched. Signed-off-by: Masahide NAKAMURA <nakam@linux-ipv6.org> Signed-off-by: Yasuyuki Kozakai <kozakai@linux-ipv6.org> Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
* | [NETFILTER]: {ip,ip6}_tables: use struct xt_table instead of redefined ↵Jan Engelhardt2007-02-08
| | | | | | | | | | | | | | | | structure names Signed-off-by: Jan Engelhardt <jengelh@gmx.de> Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
* | [NETFILTER]: {ip,ip6}_tables: remove x_tables wrapper functionsJan Engelhardt2007-02-08
| | | | | | | | | | | | | | | | | | Use the x_tables functions directly to make it better visible which parts are shared between ip_tables and ip6_tables. Signed-off-by: Jan Engelhardt <jengelh@gmx.de> Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
* | [NETFILTER]: x_tables: fix return values for LOG/ULOGJan Engelhardt2007-02-08
| | | | | | | | | | | | Signed-off-by: Jan Engelhardt <jengelh@gmx.de> Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
* | [NETFILTER]: NAT: optional source port randomization supportEric Leblond2007-02-08
| | | | | | | | | | | | | | | | This patch adds support to NAT to randomize source ports. Signed-off-by: Eric Leblond <eric@inl.fr> Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
* | [NETFILTER]: add IPv6-capable TCPMSS targetPatrick McHardy2007-02-08
| | | | | | | | | | Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
* | [NET]: Add UDPLITE support in a few missing spotsPatrick McHardy2007-02-08
| | | | | | | | | | Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
* | [NETFILTER]: bridge-netfilter: use nf_register_hooks/nf_unregister_hooksPatrick McHardy2007-02-08
| | | | | | | | | | | | | | Additionally mark the init function __init. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
* | [NETFILTER]: nf_nat: remove broken HOOKNAME macroPatrick McHardy2007-02-08
| | | | | | | | | | Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
* | [NETFILTER]: Remove useless comparisons before assignmentsJan Engelhardt2007-02-08
| | | | | | | | | | | | | | | | Remove unnecessary if() constructs before assignment. Signed-off-by: Jan Engelhardt <jengelh@gmx.de> Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
* | [NETFILTER]: tcp conntrack: do liberal tracking for picked up connectionsPatrick McHardy2007-02-08
| | | | | | | | | | | | | | | | | | | | | | | | Do liberal tracking (only RSTs need to be in-window) for connections picked up without seeing a SYN to deal with window scaling. Also change logging of invalid packets not to log packets accepted by liberal tracking to avoid spamming the logs. Based on suggestion from James Ralston <ralston@pobox.com> Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
* | [NETFILTER]: Add SANE connection tracking helperMichal Schmidt2007-02-08
| | | | | | | | | | | | | | | | | | | | | | | | This is nf_conntrack_sane, a netfilter connection tracking helper module for the SANE protocol used by the 'saned' daemon to make scanners available via network. The SANE protocol uses separate control & data connections, similar to passive FTP. The helper module is needed to recognize the data connection as RELATED to the control one. Signed-off-by: Michal Schmidt <mschmidt@redhat.com> Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
* | [IRLAN]: handle out of memory errorsAkinobu Mita2007-02-08
| | | | | | | | | | | | | | | | | | | | | | | | This patch checks return values: - irlmp_register_client() - irlmp_register_service() - irlan_open() Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Signed-off-by: Samuel Ortiz <samuel@sortiz.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* | [IRDA]: handle out of memory errorsAkinobu Mita2007-02-08
| | | | | | | | | | | | | | | | | | This patch checks return value of memory allocation functions for irda subsystem and fixes memory leaks in error cases. Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Signed-off-by: Samuel Ortiz <samuel@sortiz.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* | [NET]: unregister_netdevice as voidStephen Hemminger2007-02-08
| | | | | | | | | | | | | | | | | | There was no real useful information from the unregister_netdevice() return code, the only error occurred in a situation that was a driver bug. So change it to a void function. Signed-off-by: Stephen Hemminger <shemminger@osdl.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* | [IPV6] RAW: Add checksum default defines for MH.Masahide NAKAMURA2007-02-08
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Add checksum default defines for mobility header(MH) which goes through raw socket. As the result kernel's behavior is to handle MH checksum as default. This patch also removes verifying inbound MH checksum at mip6_mh_filter() since it did not consider user specified checksum offset and was redundant check with raw socket code. Signed-off-by: Masahide NAKAMURA <nakam@linux-ipv6.org> 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 Dobriyan2007-02-08
| | | | | | | | | | | | | | | | 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>
* | [XFRM]: Fix missed error setting in xfrm4_policy.cDavid S. Miller2007-02-08
| | | | | | | | | | | | | | When we can't find the afinfo we should return EAFNOSUPPORT. GCC warned about the uninitialized 'err' for this path as well. Signed-off-by: David S. Miller <davem@davemloft.net>
* | [IPSEC]: IPv4 over IPv6 IPsec tunnelMiika Komu2007-02-08
| | | | | | | | | | | | | | | | | | This is the patch to support IPv4 over IPv6 IPsec. Signed-off-by: Miika Komu <miika@iki.fi> Signed-off-by: Diego Beltrami <Diego.Beltrami@hiit.fi> Signed-off-by: Kazunori Miyazawa <miyazawa@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* | [IPSEC]: IPv6 over IPv4 IPsec tunnelMiika Komu2007-02-08
| | | | | | | | | | | | | | | | | | This is the patch to support IPv6 over IPv4 IPsec Signed-off-by: Miika Komu <miika@iki.fi> Signed-off-by: Diego Beltrami <Diego.Beltrami@hiit.fi> Signed-off-by: Kazunori Miyazawa <miyazawa@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* | [IPSEC]: exporting xfrm_state_afinfoMiika Komu2007-02-08
| | | | | | | | | | | | | | | | | | This patch exports xfrm_state_afinfo. Signed-off-by: Miika Komu <miika@iki.fi> Signed-off-by: Diego Beltrami <Diego.Beltrami@hiit.fi> Signed-off-by: Kazunori Miyazawa <miyazawa@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* | [DCCP]: Warning fixes.Andrew Morton2007-02-08
| | | | | | | | | | | | | | | | | | | | | | net/dccp/ccids/ccid3.c: In function `ccid3_hc_rx_packet_recv': net/dccp/ccids/ccid3.c:1007: warning: long int format, different type arg (arg 3) net/dccp/ccids/ccid3.c:1007: warning: long int format, different type arg (arg 4) opaque types must be suitably cast for printing. Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* | [NET] net/wanrouter/wanmain.c: cleanupsAdrian Bunk2007-02-08
| | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch contains the following cleanups: - make the following needlessly global functions static: - lock_adapter_irq() - unlock_adapter_irq() - #if 0 the following unused global functions: - wanrouter_encapsulate() - wanrouter_type_trans() Signed-off-by: Adrian Bunk <bunk@stusta.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* | [ATM]: Fix for crash in adummy_init()Daniel Walker2007-02-08
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This was reported by Ingo Molnar here, http://lkml.org/lkml/2006/12/18/119 The problem is that adummy_init() depends on atm_init() , but adummy_init() is called first. So I put atm_init() into subsys_initcall which seems appropriate, and it will still get module_init() if it becomes a module. Interesting to note that you could crash your system here if you just load the modules in the wrong order. Signed-off-by: Daniel Walker <dwalker@mvista.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* | [NET]: user of the jiffies rounding code: NetworkingArjan van de Ven2007-02-08
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch introduces users of the round_jiffies() function in the networking code. These timers all were of the "about once a second" or "about once every X seconds" variety and several showed up in the "what wakes the cpu up" profiles that the tickless patches provide. Some timers are highly dynamic based on network load; but even on low activity systems they still show up so the rounding is done only in cases of low activity, allowing higher frequency timers in the high activity case. The various hardware watchdogs are an obvious case; they run every 2 seconds but aren't otherwise specific of exactly when they need to run. Signed-off-by: Arjan van de Ven <arjan@linux.intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* | [TCP]: Don't apply FIN exception to full TSO segments.John Heffner2007-02-08
| | | | | | | | | | Signed-off-by: John Heffner <jheffner@psc.edu> Signed-off-by: David S. Miller <davem@davemloft.net>
* | [TCP]: Check num sacks in SACK fast pathBaruch Even2007-02-08
| | | | | | | | | | | | | | | | | | | | We clear the unused parts of the SACK cache, This prevents us from mistakenly taking the cache data if the old data in the SACK cache is the same as the data in the SACK block. This assumes that we never receive an empty SACK block with start and end both at zero. Signed-off-by: Baruch Even <baruch@ev-en.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* | [TCP]: Seperate DSACK from SACK fast pathBaruch Even2007-02-08
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Move DSACK code outside the SACK fast-path checking code. If the DSACK determined that the information was too old we stayed with a partial cache copied. Most likely this matters very little since the next packet will not be DSACK and we will find it in the cache. but it's still not good form and there is little reason to couple the two checks. Since the SACK receive cache doesn't need the data to be in host order we also remove the ntohl in the checking loop. Signed-off-by: Baruch Even <baruch@ev-en.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* | [TCP]: Advance fast path pointer for first block onlyBaruch Even2007-02-08
| | | | | | | | | | | | | | | | | | Only advance the SACK fast-path pointer for the first block, the fast-path assumes that only the first block advances next time so we should not move the cached skb for the next sack blocks. Signed-off-by: Baruch Even <baruch@ev-en.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* | [PACKET]: Fix skb->cb clobbering between aux and sockaddrHerbert Xu2007-02-08
| | | | | | | | | | | | | | | | | | | | | | | | | | Both aux data and sockaddr tries to use the same buffer which obviously doesn't work. We just happen to have 4 bytes free in the skb->cb if you take away the maximum length of sockaddr_ll. That's just enough to store the one piece of info from aux data that we can't generate at recvmsg(2) time. This is what the following patch does. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
* | [PACKET]: Add optional checksum computation for recvmsgHerbert Xu2007-02-08
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch is needed to make ISC's DHCP server (and probably other DHCP servers/clients using AF_PACKET) to be able to serve another client on the same Xen host. The problem is that packets between different domains on the same Xen host only have partial checksums. Unfortunately this piece of information is not passed along in AF_PACKET unless you're using the mmap interface. Since dhcpd doesn't support packet-mmap, UDP packets from the same host come out with apparently bogus checksums. This patch adds a mechanism for AF_PACKET recvmsg(2) to return the status along with the packet. It does so by adding a new cmsg that contains this information along with some other relevant data such as the original packet length. I didn't include the time stamp information since there is already a cmsg for that. This patch also changes the mmap code to set the CSUMNOTREADY flag on all packets instead of just outoing packets on cooked sockets. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
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