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2013-01-12netfilter: nf_conntrack: fix BUG_ON while removing nf_conntrack with netnsPablo Neira Ayuso
canqun zhang reported that we're hitting BUG_ON in the nf_conntrack_destroy path when calling kfree_skb while rmmod'ing the nf_conntrack module. Currently, the nf_ct_destroy hook is being set to NULL in the destroy path of conntrack.init_net. However, this is a problem since init_net may be destroyed before any other existing netns (we cannot assume any specific ordering while releasing existing netns according to what I read in recent emails). Thanks to Gao feng for initial patch to address this issue. Reported-by: canqun zhang <canqunzhang@gmail.com> Acked-by: Gao feng <gaofeng@cn.fujitsu.com> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2013-01-12batman-adv: unbloat batadv_priv if debug is not enabledMarek Lindner
Signed-off-by: Marek Lindner <lindner_marek@yahoo.de> Signed-off-by: Antonio Quartulli <ordex@autistici.org>
2013-01-12batman-adv: remove unused variable from orig_node structMarek Lindner
Signed-off-by: Marek Lindner <lindner_marek@yahoo.de> Signed-off-by: Antonio Quartulli <ordex@autistici.org>
2013-01-12batman-adv: fix typo in debug messageAntonio Quartulli
in bat_iv_ogm.c a debug message should print "tq" instead of "td" Signed-off-by: Antonio Quartulli <ordex@autistici.org> Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
2013-01-12batman-adv: use the const qualifier in hash functionsAntonio Quartulli
The data argument in each hash function should carry the "const" qualifier as it is never modified. Signed-off-by: Antonio Quartulli <antonio@open-mesh.com> Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
2013-01-12batman-adv: don't compile the BLA switch if not requestedAntonio Quartulli
When the Bridge Loop Avoidance component is not compiled-in, its boolean switch should be not compiled as well. This patch surrounds the switch with a proper ifdef. This behaviour was introduced by 9fd6b0615b5499b270d39a92b8790e206cf75833 ("batman-adv: add bridge loop avoidance compile option") Signed-off-by: Antonio Quartulli <ordex@autistici.org> Acked-by: Simon Wunderlich <siwu@hrz.tu-chemnitz.de> Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
2013-01-12batman-adv: remove useless NULL checkAntonio Quartulli
debugfs_remove_recursive() checks whether its argument is not null on its own, therefore it is possible to remove the external check. Signed-off-by: Antonio Quartulli <ordex@autistici.org> Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
2013-01-12batman-adv: remove useless blank lines before and after bracketsAntonio Quartulli
Signed-off-by: Antonio Quartulli <ordex@autistici.org> Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
2013-01-12batman-adv: Initialize lockdep class keys for hashesAntonio Quartulli
Different hashes have the same class key because they get initialised with the same one. For this reason lockdep can create false warning when they are used recursively. Re-initialise the key for each hash after the invocation to hash_new() to avoid this problem. Signed-off-by: Antonio Quartulli <ordex@autistici.org> Tested-by: Linus Lüssing <linus.luessing@web.de> Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
2013-01-12batman-adv: remove useless assignment in tt_local_add()Antonio Quartulli
The flag field of the tt_local_entry->common structure in tt_local_add() is first assigned NO_FLAGS and then TT_CLIENT_NEW so nullifying the first operation. For this reason it is safe to remove the first assignment. This was introuduced by ("batman-adv: keep local table consistency for further TT_RESPONSE") Signed-off-by: Antonio Quartulli <ordex@autistici.org> Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
2013-01-12batman-adv: unify and properly print hex valuesAntonio Quartulli
Values are printed in hexadecimal format in several points in the code, but they are not printed using the same format string. This patches unifies the format used for such numbers so that they look the same everywhere. Given the fact that all the variables printed as hexadecimal are 16 bit long, this is the chosen printing format: %#.4x Signed-off-by: Antonio Quartulli <ordex@autistici.org> Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
2013-01-12batman-adv: print the CRC together with the translation tablesAntonio Quartulli
To simplify debugging operations, it is better to print the related CRC together with the translation table (local CRC for the local table and global CRC for each entry in the global table) Signed-off-by: Antonio Quartulli <ordex@autistici.org> Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
2013-01-12batman-adv: improve local translation table outputAntonio Quartulli
This patch adds a nice header to the local translation table and the last_seen time for each local entry Signed-off-by: Antonio Quartulli <ordex@autistici.org> Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
2013-01-12batman-adv: reduce local TT entry timeout to 10 minutesAntonio Quartulli
The current timeout is set to one hour. However a client connected to the mesh network will always generate traffic. In the worst case it will send ARP requests every 4 or 5 minutes. On the other hand having a long timeout means storing dead entries for one hour and it leads to very big trans-tables containing useless clients. This patch reduces the timeout to 10 minutes Signed-off-by: Antonio Quartulli <ordex@autistici.org> Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
2013-01-12batman-adv: Do not add multicast MAC addresses to translation tableLinus Lüssing
The current translation table mechanism is not suitable for multicast addresses and we are currently flooding such frames anyway. Therefore this patch prevents multicast MAC addresses being added to the translation table. Signed-off-by: Linus Lüssing <linus.luessing@web.de> Acked-by: Antonio Quartulli <ordex@autistici.org> Signed-off-by: Marek Lindner <lindner_marek@yahoo.de> Signed-off-by: Antonio Quartulli <ordex@autistici.org>
2013-01-12batman-adv: use per_cpu_add helperShan Wei
this_cpu_add is an atomic operation. and be more faster than per_cpu_ptr operation. Signed-off-by: Shan Wei <davidshan@tencent.com> Reviewed-by: Christoph Lameter <cl@linux.com> Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Marek Lindner <lindner_marek@yahoo.de> Signed-off-by: Antonio Quartulli <ordex@autistici.org>
2013-01-11net: splice: fix __splice_segment()Eric Dumazet
commit 9ca1b22d6d2 (net: splice: avoid high order page splitting) forgot that skb->head could need a copy into several page frags. This could be the case for loopback traffic mostly. Also remove now useless skb argument from linear_to_page() and __splice_segment() prototypes. Signed-off-by: Eric Dumazet <edumazet@google.com> Cc: Willy Tarreau <w@1wt.eu> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-01-11ipv4: fib: fix a comment.Rami Rosen
In fib_frontend.c, there is a confusing comment; NETLINK_CB(skb).portid does not refer to a pid of sending process, but rather to a netlink portid. Signed-off-by: Rami Rosen <ramirose@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-01-11net, wireless: overwrite default_ethtool_opsStanislaw Gruszka
Since: commit 2c60db037034d27f8c636403355d52872da92f81 Author: Eric Dumazet <edumazet@google.com> Date: Sun Sep 16 09:17:26 2012 +0000 net: provide a default dev->ethtool_ops wireless core does not correctly assign ethtool_ops. After alloc_netdev*() call, some cfg80211 drivers provide they own ethtool_ops, but some do not. For them, wireless core provide generic cfg80211_ethtool_ops, which is assigned in NETDEV_REGISTER notify call: if (!dev->ethtool_ops) dev->ethtool_ops = &cfg80211_ethtool_ops; But after Eric's commit, dev->ethtool_ops is no longer NULL (on cfg80211 drivers without custom ethtool_ops), but points to &default_ethtool_ops. In order to fix the problem, provide function which will overwrite default_ethtool_ops and use it by wireless core. Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com> Acked-by: Johannes Berg <johannes@sipsolutions.net> Acked-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-01-11net: Export __netdev_pick_tx so that it can be used in modulesAlexander Duyck
When testing with FCoE enabled we discovered that I had not exported __netdev_pick_tx. As a result ixgbe doesn't build with the RFC patches applied because ixgbe_select_queue was calling the function. This change corrects that build issue by correctly exporting __netdev_pick_tx so it can be used by modules. Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-01-11Merge tag 'nfs-for-3.8-3' of git://git.linux-nfs.org/projects/trondmy/linux-nfsLinus Torvalds
Pull NFS client bugfix from Trond Myklebust: - Fix a socket lock leak in net/sunrpc/xprt.c * tag 'nfs-for-3.8-3' of git://git.linux-nfs.org/projects/trondmy/linux-nfs: SUNRPC: Ensure we release the socket write lock if the rpc_task exits early
2013-01-10tcp: accept RST without ACK flagEric Dumazet
commit c3ae62af8e755 (tcp: should drop incoming frames without ACK flag set) added a regression on the handling of RST messages. RST should be allowed to come even without ACK bit set. We validate the RST by checking the exact sequence, as requested by RFC 793 and 5961 3.2, in tcp_validate_incoming() Reported-by: Eric Wong <normalperson@yhbt.net> Signed-off-by: Eric Dumazet <edumazet@google.com> Acked-by: Neal Cardwell <ncardwell@google.com> Tested-by: Eric Wong <normalperson@yhbt.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-01-10net: Add support for XPS without sysfs being definedAlexander Duyck
This patch makes it so that we can support transmit packet steering without sysfs needing to be enabled. The reason for making this change is to make it so that a driver can make use of the XPS even while the sysfs portion of the interface is not present. Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-01-10net: Rewrite netif_set_xps_queues to address several issuesAlexander Duyck
This change is meant to address several issues I found within the netif_set_xps_queues function. If the allocation of one of the maps to be assigned to new_dev_maps failed we could end up with the device map in an inconsistent state since we had already worked through a number of CPUs and removed or added the queue. To address that I split the process into several steps. The first of which is just the allocation of updated maps for CPUs that will need larger maps to store the queue. By doing this we can fail gracefully without actually altering the contents of the current device map. The second issue I found was the fact that we were always allocating a new device map even if we were not adding any queues. I have updated the code so that we only allocate a new device map if we are adding queues, otherwise if we are not adding any queues to CPUs we just skip to the removal process. The last change I made was to reuse the code from remove_xps_queue to remove the queue from the CPU. By making this change we can be consistent in how we go about adding and removing the queues from the CPUs. Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-01-10net: Rewrite netif_reset_xps_queue to allow for better code reuseAlexander Duyck
This patch does a minor refactor on netif_reset_xps_queue to address a few items I noticed. First is the fact that we are doing removal of queues in both netif_reset_xps_queue and netif_set_xps_queue. Since there is no need to have the code in two places I am pushing it out into a separate function and will come back in another patch and reuse the code in netif_set_xps_queue. The second item this change addresses is the fact that the Tx queues were not getting their numa_node value cleared as a part of the XPS queue reset. This patch resolves that by resetting the numa_node value if the dev_maps value is set. Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-01-10net: Add functions netif_reset_xps_queue and netif_set_xps_queueAlexander Duyck
This patch adds two functions, netif_reset_xps_queue and netif_set_xps_queue. The main idea behind these two functions is to provide a mechanism through which drivers can update their defaults in regards to XPS. Currently no such mechanism exists and as a result we cannot use XPS for things such as ATR which would require a basic configuration to start in which the Tx queues are mapped to CPUs via a 1:1 mapping. With this change I am making it possible for drivers such as ixgbe to be able to use the XPS feature by controlling the default configuration. Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-01-10net: Split core bits of netdev_pick_tx into __netdev_pick_txAlexander Duyck
This change splits the core bits of netdev_pick_tx into a separate function. The main idea behind this is to make this code accessible to select queue functions when they decide to process the standard path instead of their own custom path in their select queue routine. Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-01-10net_sched: more precise pkt_len computationEric Dumazet
One long standing problem with TSO/GSO/GRO packets is that skb->len doesn't represent a precise amount of bytes on wire. Headers are only accounted for the first segment. For TCP, thats typically 66 bytes per 1448 bytes segment missing, an error of 4.5 % for normal MSS value. As consequences : 1) TBF/CBQ/HTB/NETEM/... can send more bytes than the assigned limits. 2) Device stats are slightly under estimated as well. Fix this by taking account of headers in qdisc_skb_cb(skb)->pkt_len computation. Packet schedulers should use qdisc pkt_len instead of skb->len for their bandwidth limitations, and TSO enabled devices drivers could use pkt_len if their statistics are not hardware assisted, and if they don't scratch skb->cb[] first word. Both egress and ingress paths work, thanks to commit fda55eca5a (net: introduce skb_transport_header_was_set()) : If GRO built a GSO packet, it also set the transport header for us. Signed-off-by: Eric Dumazet <edumazet@google.com> Cc: Jamal Hadi Salim <jhs@mojatatu.com> Cc: Stephen Hemminger <shemminger@vyatta.com> Cc: Paolo Valente <paolo.valente@unimore.it> Cc: Herbert Xu <herbert@gondor.apana.org.au> Cc: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-01-10nfs: fix sunrpc/clnt.c kernel-doc warningsRandy Dunlap
Fix new kernel-doc warnings in clnt.c: Warning(net/sunrpc/clnt.c:561): No description found for parameter 'flavor' Warning(net/sunrpc/clnt.c:561): Excess function parameter 'auth' description in 'rpc_clone_client_set_auth' Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Cc: Trond Myklebust <Trond.Myklebust@netapp.com> Cc: "J. Bruce Fields" <bfields@fieldses.org> Cc: linux-nfs@vger.kernel.org Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-01-10ipv6: use addrconf_get_prefix_route for prefix route lookup [v2]Romain Kuntz
Replace ip6_route_lookup() with addrconf_get_prefix_route() when looking up for a prefix route. This ensures that the connected prefix is looked up in the main table, and avoids the selection of other matching routes located in different tables as well as blackhole or prohibited entries. In addition, this fixes an Opps introduced by commit 64c6d08e (ipv6: del unreachable route when an addr is deleted on lo), that would occur when a blackhole or prohibited entry is selected by ip6_route_lookup(). Such entries have a NULL rt6i_table argument, which is accessed by __ip6_del_rt() when trying to lock rt6i_table->tb6_lock. The function addrconf_is_prefix_route() is not used anymore and is removed. [v2] Minor indentation cleanup and log updates. Signed-off-by: Romain Kuntz <r.kuntz@ipflavors.com> Acked-by: Nicolas Dichtel <nicolas.dichtel@6wind.com> Acked-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-01-10ipv6: fix the noflags test in addrconf_get_prefix_routeRomain Kuntz
The tests on the flags in addrconf_get_prefix_route() does no make much sense: the 'noflags' parameter contains the set of flags that must not match with the route flags, so the test must be done against 'noflags', and not against 'flags'. Signed-off-by: Romain Kuntz <r.kuntz@ipflavors.com> Acked-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-01-10tcp: fix splice() and tcp collapsing interactionEric Dumazet
Under unusual circumstances, TCP collapse can split a big GRO TCP packet while its being used in a splice(socket->pipe) operation. skb_splice_bits() releases the socket lock before calling splice_to_pipe(). [ 1081.353685] WARNING: at net/ipv4/tcp.c:1330 tcp_cleanup_rbuf+0x4d/0xfc() [ 1081.371956] Hardware name: System x3690 X5 -[7148Z68]- [ 1081.391820] cleanup rbuf bug: copied AD3BCF1 seq AD370AF rcvnxt AD3CF13 To fix this problem, we must eat skbs in tcp_recv_skb(). Remove the inline keyword from tcp_recv_skb() definition since it has three call sites. Reported-by: Christian Becker <c.becker@traviangames.com> Cc: Willy Tarreau <w@1wt.eu> Signed-off-by: Eric Dumazet <edumazet@google.com> Tested-by: Willy Tarreau <w@1wt.eu> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-01-10tcp: splice: fix an infinite loop in tcp_read_sock()Eric Dumazet
commit 02275a2ee7c0 (tcp: don't abort splice() after small transfers) added a regression. [ 83.843570] INFO: rcu_sched self-detected stall on CPU [ 83.844575] INFO: rcu_sched detected stalls on CPUs/tasks: { 6} (detected by 0, t=21002 jiffies, g=4457, c=4456, q=13132) [ 83.844582] Task dump for CPU 6: [ 83.844584] netperf R running task 0 8966 8952 0x0000000c [ 83.844587] 0000000000000000 0000000000000006 0000000000006c6c 0000000000000000 [ 83.844589] 000000000000006c 0000000000000096 ffffffff819ce2bc ffffffffffffff10 [ 83.844592] ffffffff81088679 0000000000000010 0000000000000246 ffff880c4b9ddcd8 [ 83.844594] Call Trace: [ 83.844596] [<ffffffff81088679>] ? vprintk_emit+0x1c9/0x4c0 [ 83.844601] [<ffffffff815ad449>] ? schedule+0x29/0x70 [ 83.844606] [<ffffffff81537bd2>] ? tcp_splice_data_recv+0x42/0x50 [ 83.844610] [<ffffffff8153beaa>] ? tcp_read_sock+0xda/0x260 [ 83.844613] [<ffffffff81537b90>] ? tcp_prequeue_process+0xb0/0xb0 [ 83.844615] [<ffffffff8153c0f0>] ? tcp_splice_read+0xc0/0x250 [ 83.844618] [<ffffffff814dc0c2>] ? sock_splice_read+0x22/0x30 [ 83.844622] [<ffffffff811b820b>] ? do_splice_to+0x7b/0xa0 [ 83.844627] [<ffffffff811ba4bc>] ? sys_splice+0x59c/0x5d0 [ 83.844630] [<ffffffff8119745b>] ? putname+0x2b/0x40 [ 83.844633] [<ffffffff8118bcb4>] ? do_sys_open+0x174/0x1e0 [ 83.844636] [<ffffffff815b6202>] ? system_call_fastpath+0x16/0x1b if recv_actor() returns 0, we should stop immediately, because looping wont give a chance to drain the pipe. Signed-off-by: Eric Dumazet <edumazet@google.com> Cc: Willy Tarreau <w@1wt.eu> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-01-10Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux Pull s390 patches from Martin Schwidefsky: "Add the finit_module system call, fix the irq statistics in /proc/stat, fix a s390dbf lockdep problem, a patch revert for a problem that is not 100% understood yet, and a few patches to fix warnings." * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: s390/pci: define read*_relaxed functions s390/topology: export cpu_topology s390/pm: export pm_power_off s390/pci: define isa_dma_bridge_buggy s390/3215: partially revert tty close handling fix s390/irq: count cpu restart events s390/irq: remove split irq fields from /proc/stat s390/irq: enable irq sum accounting for /proc/stat again s390/syscalls: wire up finit_module syscall s390/pci: remove dead code s390/smp: fix section mismatch for smp_add_present_cpu() s390/debug: Fix s390dbf lockdep problem in debug_(un)register_view()
2013-01-10netfilter: xt_CT: fix unset return value if conntrack zone are disabledPablo Neira Ayuso
net/netfilter/xt_CT.c: In function ‘xt_ct_tg_check_v1’: net/netfilter/xt_CT.c:250:6: warning: ‘ret’ may be used uninitialized in this function [-Wmaybe-uninitialized] net/netfilter/xt_CT.c: In function ‘xt_ct_tg_check_v0’: net/netfilter/xt_CT.c:112:6: warning: ‘ret’ may be used uninitialized in this function [-Wmaybe-uninitialized] Reported-by: Borislav Petkov <bp@alien8.de> Acked-by: Borislav Petkov <bp@alien8.de> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2013-01-09ipv6: Use container_of macro instead of magic number to get ipv6 header.YOSHIFUJI Hideaki / 吉藤英明
In ipv6_recv_error(), addr_offset points to daddr field of the ip header. To get ipv6 header, use container_of() macro instead of substracting magic number (24). Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-01-09unix: Use FIELD_SIZEOF() in af_unix_init().YOSHIFUJI Hideaki / 吉藤英明
Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-01-09rxrpc: Use FIELD_SIZEOF() in af_rxrpc_init().YOSHIFUJI Hideaki / 吉藤英明
Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-01-09openvswitch: Use FIELD_SIZEOF() in dp_init().YOSHIFUJI Hideaki / 吉藤英明
Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-01-09netlink: Use FIELD_SIZEOF() in netlink_proto_init().YOSHIFUJI Hideaki / 吉藤英明
Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-01-09ipv6: Use FIELD_SIZEOF() in inet6_init().YOSHIFUJI Hideaki / 吉藤英明
Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-01-09ipv4: Use FIELD_SIZEOF() in inet_init().YOSHIFUJI Hideaki / 吉藤英明
Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-01-09Merge branch 'master' of ↵John W. Linville
git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless into for-davem
2013-01-08net: init perm_addr in register_netdevice()Jiri Pirko
Benefit from the fact that dev->addr_assign_type is set to NET_ADDR_PERM in case the device has permanent address. This also fixes the problem that many drivers do not set perm_addr at all. Signed-off-by: Jiri Pirko <jiri@resnulli.us> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-01-08net: prevent setting ttl=0 via IP_TTLCong Wang
A regression is introduced by the following commit: commit 4d52cfbef6266092d535237ba5a4b981458ab171 Author: Eric Dumazet <eric.dumazet@gmail.com> Date: Tue Jun 2 00:42:16 2009 -0700 net: ipv4/ip_sockglue.c cleanups Pure cleanups but it is not a pure cleanup... - if (val != -1 && (val < 1 || val>255)) + if (val != -1 && (val < 0 || val > 255)) Since there is no reason provided to allow ttl=0, change it back. Reported-by: nitin padalia <padalia.nitin@gmail.com> Cc: nitin padalia <padalia.nitin@gmail.com> Cc: Eric Dumazet <eric.dumazet@gmail.com> Cc: David S. Miller <davem@davemloft.net> Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com> Acked-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-01-08netpoll: add IPv6 supportCong Wang
Currently, netpoll only supports IPv4. This patch adds IPv6 support to netpoll so that we can run netconsole over IPv6 network. Cc: David S. Miller <davem@davemloft.net> Signed-off-by: Cong Wang <amwang@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-01-08ipv6: move csum_ipv6_magic() and udp6_csum_init() into static libraryCong Wang
As suggested by David, udp6_csum_init() is too big to be inlined, move it to ipv6 static library, net/ipv6/ip6_checksum.c. And the generic csum_ipv6_magic() too. Cc: David S. Miller <davem@davemloft.net> Signed-off-by: Cong Wang <amwang@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-01-08netpoll: prepare for ipv6Cong Wang
This patch adjusts some struct and functions, to prepare for supporting IPv6. Cc: David S. Miller <davem@davemloft.net> Signed-off-by: Cong Wang <amwang@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-01-08net: introduce skb_transport_header_was_set()Eric Dumazet
We have skb_mac_header_was_set() helper to tell if mac_header was set on a skb. We would like the same for transport_header. __netif_receive_skb() doesn't reset the transport header if already set by GRO layer. Note that network stacks usually reset the transport header anyway, after pulling the network header, so this change only allows a followup patch to have more precise qdisc pkt_len computation for GSO packets at ingress side. Signed-off-by: Eric Dumazet <edumazet@google.com> Cc: Jamal Hadi Salim <jhs@mojatatu.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-01-08SUNRPC: Ensure we release the socket write lock if the rpc_task exits earlyTrond Myklebust
If the rpc_task exits while holding the socket write lock before it has allocated an rpc slot, then the usual mechanism for releasing the write lock in xprt_release() is defeated. The problem occurs if the call to xprt_lock_write() initially fails, so that the rpc_task is put on the xprt->sending wait queue. If the task exits after being assigned the lock by __xprt_lock_write_func, but before it has retried the call to xprt_lock_and_alloc_slot(), then it calls xprt_release() while holding the write lock, but will immediately exit due to the test for task->tk_rqstp != NULL. Reported-by: Chris Perl <chris.perl@gmail.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com> Cc: stable@vger.kernel.org [>= 3.1]