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* 6lowpan: Make a copy of skb's delivered to 6lowpanAlan Ott2012-09-021-1/+8
| | | | | | | | | Since lowpan_process_data() modifies the skb (by calling skb_pull()), we need our own copy so that it doesn't affect the data received by other protcols (in this case, af_ieee802154). Signed-off-by: Alan Ott <alan@signal11.us> Signed-off-by: David S. Miller <davem@tempietto.lan>
* Merge branch 'tcp_fastopen_server'David S. Miller2012-09-0120-97/+915
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Jerry Chu says: ==================== This patch series provides the server (passive open) side code for TCP Fast Open. Together with the earlier client side patches it completes the TCP Fast Open implementation. The server side Fast Open code accepts data carried in the SYN packet with a valid Fast Open cookie, and passes it to the application right away, allowing application to send back response data, all before TCP's 3-way handshake finishes. A simple cookie scheme together with capping the number of outstanding TFO requests (still in TCP_SYN_RECV state) to a limit per listener forms the main line of defense against spoofed SYN attacks. For more details about TCP Fast Open see our IETF internet draft at http://www.ietf.org/id/draft-ietf-tcpm-fastopen-01.txt and a research paper at http://conferences.sigcomm.org/co-next/2011/papers/1569470463.pdf A prototype implementation was first developed by Sivasankar Radhakrishnan (sivasankar@cs.ucsd.edu). A patch based on an older version of Linux kernel has been undergoing internal tests at Google for the past few months. Jerry Chu (3): tcp: TCP Fast Open Server - header & support functions tcp: TCP Fast Open Server - support TFO listeners tcp: TCP Fast Open Server - main code path ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
| * tcp: TCP Fast Open Server - main code pathJerry Chu2012-09-012-27/+309
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch adds the main processing path to complete the TFO server patches. A TFO request (i.e., SYN+data packet with a TFO cookie option) first gets processed in tcp_v4_conn_request(). If it passes the various TFO checks by tcp_fastopen_check(), a child socket will be created right away to be accepted by applications, rather than waiting for the 3WHS to finish. In additon to the use of TFO cookie, a simple max_qlen based scheme is put in place to fend off spoofed TFO attack. When a valid ACK comes back to tcp_rcv_state_process(), it will cause the state of the child socket to switch from either TCP_SYN_RECV to TCP_ESTABLISHED, or TCP_FIN_WAIT1 to TCP_FIN_WAIT2. At this time retransmission will resume for any unack'ed (data, FIN,...) segments. Signed-off-by: H.K. Jerry Chu <hkchu@google.com> Cc: Yuchung Cheng <ycheng@google.com> Cc: Neal Cardwell <ncardwell@google.com> Cc: Eric Dumazet <edumazet@google.com> Cc: Tom Herbert <therbert@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * tcp: TCP Fast Open Server - support TFO listenersJerry Chu2012-09-0113-50/+330
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch builds on top of the previous patch to add the support for TFO listeners. This includes - 1. allocating, properly initializing, and managing the per listener fastopen_queue structure when TFO is enabled 2. changes to the inet_csk_accept code to support TFO. E.g., the request_sock can no longer be freed upon accept(), not until 3WHS finishes 3. allowing a TCP_SYN_RECV socket to properly poll() and sendmsg() if it's a TFO socket 4. properly closing a TFO listener, and a TFO socket before 3WHS finishes 5. supporting TCP_FASTOPEN socket option 6. modifying tcp_check_req() to use to check a TFO socket as well as request_sock 7. supporting TCP's TFO cookie option 8. adding a new SYN-ACK retransmit handler to use the timer directly off the TFO socket rather than the listener socket. Note that TFO server side will not retransmit anything other than SYN-ACK until the 3WHS is completed. The patch also contains an important function "reqsk_fastopen_remove()" to manage the somewhat complex relation between a listener, its request_sock, and the corresponding child socket. See the comment above the function for the detail. Signed-off-by: H.K. Jerry Chu <hkchu@google.com> Cc: Yuchung Cheng <ycheng@google.com> Cc: Neal Cardwell <ncardwell@google.com> Cc: Eric Dumazet <edumazet@google.com> Cc: Tom Herbert <therbert@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * tcp: TCP Fast Open Server - header & support functionsJerry Chu2012-09-019-20/+276
|/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch adds all the necessary data structure and support functions to implement TFO server side. It also documents a number of flags for the sysctl_tcp_fastopen knob, and adds a few Linux extension MIBs. In addition, it includes the following: 1. a new TCP_FASTOPEN socket option an application must call to supply a max backlog allowed in order to enable TFO on its listener. 2. A number of key data structures: "fastopen_rsk" in tcp_sock - for a big socket to access its request_sock for retransmission and ack processing purpose. It is non-NULL iff 3WHS not completed. "fastopenq" in request_sock_queue - points to a per Fast Open listener data structure "fastopen_queue" to keep track of qlen (# of outstanding Fast Open requests) and max_qlen, among other things. "listener" in tcp_request_sock - to point to the original listener for book-keeping purpose, i.e., to maintain qlen against max_qlen as part of defense against IP spoofing attack. 3. various data structure and functions, many in tcp_fastopen.c, to support server side Fast Open cookie operations, including /proc/sys/net/ipv4/tcp_fastopen_key to allow manual rekeying. Signed-off-by: H.K. Jerry Chu <hkchu@google.com> Cc: Yuchung Cheng <ycheng@google.com> Cc: Neal Cardwell <ncardwell@google.com> Cc: Eric Dumazet <edumazet@google.com> Cc: Tom Herbert <therbert@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* r8169: add D-Link DGE-560T identifiers.Francois Romieu2012-09-011-0/+2
| | | | | | | | | This one includes a 8168. Not to be confused with the sky2 driven one whose PCI vendor and device ID are the same. Reported-by: Neyuki Inaya <in@joblog.ru> Signed-off-by: Francois Romieu <romieu@fr.zoreil.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* bonding: add some slack to arp monitoring time limitsJiri Bohac2012-08-311-11/+20
| | | | | | | | | | | | | | | | | | | Currently, all the time limits in the bonding ARP monitor are in multiples of arp_interval -- the time interval at which the ARP monitor is periodically scheduled. With a fast network round-trip and a little scheduling latency of the ARP monitor work, a limit of n*delta_in_ticks may effectively mean (n-1)*delta_in_ticks. This is fatal in case of n==1 (the link will stay down forever) and makes the behaviour non-deterministic in all the other cases. Add a delta_in_ticks/2 time slack to all the time limits. Signed-off-by: Jiri Bohac <jbohac@suse.cz> Signed-off-by: David S. Miller <davem@davemloft.net>
* ipv6: remove some deadcodeSorin Dumitru2012-08-311-22/+7
| | | | | | | | __ipv6_regen_rndid no longer returns anything other than 0 so there's no point in verifying what it returns Signed-off-by: Sorin Dumitru <sdumitru@ixiacom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* net: fix documentation of skb_needs_linearize().Rami Rosen2012-08-311-3/+1
| | | | | | | | | | | | | | | | | skb_needs_linearize() does not check highmem DMA as it does not call illegal_highdma() anymore, so there is no need to mention highmem DMA here. (Indeed, ~NETIF_F_SG flag, which is checked in skb_needs_linearize(), can be set when illegal_highdma() returns true, and we are assured that illegal_highdma() is invoked prior to skb_needs_linearize() as skb_needs_linearize() is a static method called only once. But ~NETIF_F_SG can be set not only there in this same invocation path. It can also be set when can_checksum_protocol() returns false). see commit 02932ce9e2c136e6fab2571c8e0dd69ae8ec9853, Convert skb_need_linearize() to use precomputed features. Signed-off-by: Rami Rosen <rosenr@marvell.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* ipv4: Minor logic clean-up in ipv4_mtuAlexander Duyck2012-08-311-4/+1
| | | | | | | | | | | In ipv4_mtu there is some logic where we are testing for a non-zero value and a timer expiration, then setting the value to zero, and then testing if the value is zero we set it to a value based on the dst. Instead of bothering with the extra steps it is easier to just cleanup the logic so that we set it to the dst based value if it is zero or if the timer has expired. Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
* net:atm:fix up ENOIOCTLCMD error handlingWanlong Gao2012-08-311-1/+1
| | | | | | | | | | At commit 07d106d0, Linus pointed out that ENOIOCTLCMD should be translated as ENOTTY to user mode. Cc: "David S. Miller" <davem@davemloft.net> Cc: netdev@vger.kernel.org Signed-off-by: Wanlong Gao <gaowanlong@cn.fujitsu.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* net:stmmac: convert driver to use devm_request_and_ioremap.Srinivas Kandagatla2012-08-311-32/+8
| | | | | | | | This patch moves calls to ioremap and request_mem_region to devm_request_and_ioremap call. Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@st.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* net:stmmac: Remove bus_id from mdio platform data.Srinivas Kandagatla2012-08-314-12/+3
| | | | | | | | | | | | This patch removes bus_id from mdio platform data, The reason to remove bus_id is, stmmac mdio bus_id is always same as stmmac bus-id, so there is no point in passing this in different variable. Also stmmac ethernet driver connects to phy with bus_id passed its platform data. So, having single bus-id is much simpler. Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@st.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* net:stmmac: fix broken stmmac_pltfr_remove.Srinivas Kandagatla2012-08-311-1/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch fixes stmmac_pltfr_remove function, which is broken because, it is accessing plat variable via freed memory priv pointer which gets freed by free_netdev called from stmmac_dvr_remove. In short this patch caches the plat pointer in local variable before calling stmmac_dvr_remove to prevent code accessing freed memory. Without this patch any attempt to remove the stmmac device will fail as below: Unregistering eth 0 ... Unable to handle kernel paging request at virtual address 6b6b6bab pgd = de5dc000 [6b6b6bab] *pgd=00000000 Internal error: Oops: 5 [#1] PREEMPT SMP Modules linked in: cdev(O+) CPU: 0 Tainted: G O (3.3.1_stm24_0210-b2000+ #25) PC is at stmmac_pltfr_remove+0x2c/0xa0 LR is at stmmac_pltfr_remove+0x28/0xa0 pc : [<c01b8908>] lr : [<c01b8904>] psr: 60000013 sp : def6be78 ip : de6c5a00 fp : 00000000 r10: 00000028 r9 : c082d81d r8 : 00000001 r7 : de65a600 r6 : df81b240 r5 : c0413fd8 r4 : 00000000 r3 : 6b6b6b6b r2 : def6be6c r1 : c0355e2b r0 : 00000020 Flags: nZCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment user Control: 10c53c7d Table: 5e5dc04a DAC: 00000015 Process insmod (pid: 738, stack limit = 0xdef6a2f0) Stack: (0xdef6be78 to 0xdef6c000) be60: c0413fe0 c0403658 be80: c0400bb0 c019270c c01926f8 c0191478 00000000 c0414014 c0413fe0 c01914d8 bea0: 00000000 c0413fe0 df8045d0 c019109c c0413fe0 c0400bf0 c0413fd8 c018f04c bec0: 00000000 bf000000 c0413fd8 c01929a0 c0413fd8 bf000000 00000000 c0192bfc bee0: bf00009c bf000014 def6a000 c000859c 00000000 00000001 bf00009c bf00009c bf00: 00000001 bf00009c 00000001 bf0000e4 de65a600 00000001 c082d81d c0058cd0 bf20: bf0000a8 c004fbd8 c0056414 c082d815 c02aea20 bf0001f0 00b0b008 e0846208 bf40: c03ec8a0 e0846000 0000db0d e0850604 e08504de e0853a24 00000204 000002d4 bf60: 00000000 00000000 0000001c 0000001d 00000009 00000000 00000006 00000000 bf80: 00000003 f63d4e2e 0000db0d bef02ed8 00000080 c000d2e8 def6a000 00000000 bfa0: 00000000 c000d140 f63d4e2e 0000db0d 00b0b018 0000db0d 00b0b008 b6f4f298 bfc0: f63d4e2e 0000db0d bef02ed8 00000080 00000003 00000000 00010000 00000000 bfe0: 00b0b008 bef02c64 00008d20 b6ef3784 60000010 00b0b018 5a5a5a5a 5a5a5a5a [<c01b8908>] (stmmac_pltfr_remove+0x2c/0xa0) from [<c019270c>] (platform_drv_remove+0x14/0x18) [<c019270c>] (platform_drv_remove+0x14/0x18) from [<c0191478>] (__device_release_driver+0x64/0xa4) [<c0191478>] (__device_release_driver+0x64/0xa4) from [<c01914d8>] (device_release_driver+0x20/0x2c) [<c01914d8>] (device_release_driver+0x20/0x2c) from [<c019109c>] (bus_remove_device+0xcc/0xdc) [<c019109c>] (bus_remove_device+0xcc/0xdc) from [<c018f04c>] (device_del+0x104/0x160) [<c018f04c>] (device_del+0x104/0x160) from [<c01929a0>] (platform_device_del+0x18/0x58) [<c01929a0>] (platform_device_del+0x18/0x58) from [<c0192bfc>] (platform_device_unregister+0xc/0x18) [<c0192bfc>] (platform_device_unregister+0xc/0x18) from [<bf000014>] (r_init+0x14/0x2c [cdev]) [<bf000014>] (r_init+0x14/0x2c [cdev]) from [<c000859c>] (do_one_initcall+0x90/0x160) [<c000859c>] (do_one_initcall+0x90/0x160) from [<c0058cd0>] (sys_init_module+0x15c4/0x1794) [<c0058cd0>] (sys_init_module+0x15c4/0x1794) from [<c000d140>] (ret_fast_syscall+0x0/0x30) Code: e1a04000 e59f0070 eb039b65 e59636e4 (e5933040) Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@st.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* net:stmmac: Add check if mdiobus is registered in stmmac_mdio_unregisterSrinivas Kandagatla2012-08-311-0/+3
| | | | | | | | | | | | | | | | | | | | | | | | | This patch adds a basic check in stmmac_mdio_unregister to see if mdio bus registeration for this driver was actually sucessfull or not. Use case here is, if BSP considers using mdio-gpio bus along with stmmac driver by passing mdio_bus_data as NULL in platform data. Call to stmmac_mdio_register with mdio_bus_data as NULL returns 0, which is a considered sucessfull call form stmmac. Then again when we unload the driver we just call stmmac_mdio_unregister, this is were the actual problem is stmmac-mdio code dont really know at this instance of calling that stmmac_mdio_register was actually successful. So Adding a check in stmmac_mdio_unregister is always safe. Without this patch stmmac driver calls stmmac_mdio_register from stmmac_release which Segfaults as mii bus was never registered at the first point. Originally the this bug was found when unloading an stmmac driver instance which uses mdio-gpio for smi access. Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@st.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* Merge branch 'master' of ↵David S. Miller2012-08-317-41/+164
|\ | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/jkirsher/net-next
| * ixgbevf: Cleanup handling of configuration for jumbo framesAlexander Duyck2012-08-314-28/+58
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This change moves the code for notifying the PF of the VF maximum packet size into the vf.c file. The main motivation behind this is that the vf.c file is supposed to contain all of the messages used when communicating with the PF. In addition it creates a separate function for setting the Rx buffer size so that we have on centralized area to review what buffer sizes will be requested by the VF. Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com> Tested-by: Sibai Li <sibai.li@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
| * ixgbevf: Add suspend and resume support to the VFAlexander Duyck2012-08-311-4/+89
| | | | | | | | | | | | | | | | | | This change adds PCI suspend and resume support to ixgbevf. Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com> Signed-off-by: Greg Rose <gregory.v.rose@intel.com> Tested-by: Sibai Li <sibai.li@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
| * e1000e: update driver version numberBruce Allan2012-08-311-1/+1
| | | | | | | | | | | | Signed-off-by: Bruce Allan <bruce.w.allan@intel.com> Tested-by: Aaron Brown <aaron.f.brown@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
| * e1000e: cleanup - remove unnecessary variableBruce Allan2012-08-311-3/+2
| | | | | | | | | | | | Signed-off-by: Bruce Allan <bruce.w.allan@intel.com> Tested-by: Aaron Brown <aaron.f.brown@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
| * e1000e: cleanup - remove inapplicable commentBruce Allan2012-08-311-1/+1
| | | | | | | | | | | | | | | | | | Early Receive has been disabled in the driver so this comment is no longer applicable. Signed-off-by: Bruce Allan <bruce.w.allan@intel.com> Tested-by: Aaron Brown <aaron.f.brown@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
| * e1000e: cleanup strict checkpatch checkBruce Allan2012-08-311-1/+2
| | | | | | | | | | | | | | | | CHECK: multiple assignments should be avoided Signed-off-by: Bruce Allan <bruce.w.allan@intel.com> Tested-by: Aaron Brown <aaron.f.brown@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
| * e1000e: cleanup strict checkpatch MEMORY_BARRIER checksBruce Allan2012-08-311-1/+9
| | | | | | | | | | | | | | | | Add comments to memory barriers per strict checkpatch. Signed-off-by: Bruce Allan <bruce.w.allan@intel.com> Tested-by: Aaron Brown <aaron.f.brown@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
| * e1000e: use correct type for read of 32-bit registerBruce Allan2012-08-311-2/+2
| | | | | | | | | | | | | | | | The POEMB register is 32 bits, not 16. Signed-off-by: Bruce Allan <bruce.w.allan@intel.com> Tested-by: Aaron Brown <aaron.f.brown@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
* | openvswitch: using kfree_rcu() to simplify the codeWei Yongjun2012-08-311-9/+1
| | | | | | | | | | | | | | | | | | | | | | | | The callback function of call_rcu() just calls a kfree(), so we can use kfree_rcu() instead of call_rcu() + callback function. spatch with a semantic match is used to found this problem. (http://coccinelle.lip6.fr/) Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn> Acked-by: Jesse Gross <jesse@nicira.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | af_unix: fix shutdown parameter checkingXi Wang2012-08-311-4/+8
| | | | | | | | | | | | | | Return -EINVAL rather than 0 given an invalid "mode" parameter. Signed-off-by: Xi Wang <xi.wang@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | decnet: fix shutdown parameter checkingXi Wang2012-08-311-2/+2
| | | | | | | | | | | | | | | | | | The allowed value of "how" is SHUT_RD/SHUT_WR/SHUT_RDWR (0/1/2), rather than SHUTDOWN_MASK (3). Signed-off-by: Xi Wang <xi.wang@gmail.com> Acked-by: Steven Whitehouse <swhiteho@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | tcp: Increase timeout for SYN segmentsAlex Bergmann2012-08-312-6/+20
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Commit 9ad7c049 ("tcp: RFC2988bis + taking RTT sample from 3WHS for the passive open side") changed the initRTO from 3secs to 1sec in accordance to RFC6298 (former RFC2988bis). This reduced the time till the last SYN retransmission packet gets sent from 93secs to 31secs. RFC1122 is stating that the retransmission should be done for at least 3 minutes, but this seems to be quite high. "However, the values of R1 and R2 may be different for SYN and data segments. In particular, R2 for a SYN segment MUST be set large enough to provide retransmission of the segment for at least 3 minutes. The application can close the connection (i.e., give up on the open attempt) sooner, of course." This patch increases the value of TCP_SYN_RETRIES to the value of 6, providing a retransmission window of 63secs. The comments for SYN and SYNACK retries have also been updated to describe the current settings. The same goes for the documentation file "Documentation/networking/ip-sysctl.txt". Signed-off-by: Alexander Bergmann <alex@linlab.net> Acked-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netDavid S. Miller2012-08-31125-662/+1204
|\ \ | |/ |/| | | | | | | | | | | Merge the 'net' tree to get the recent set of netfilter bug fixes in order to assist with some merge hassles Pablo is going to have to deal with for upcoming changes. Signed-off-by: David S. Miller <davem@davemloft.net>
| * Merge branch 'master' of git://1984.lsi.us.es/nfDavid S. Miller2012-08-316-10/+25
| |\
| | * netfilter: nf_conntrack: fix racy timer handling with reliable eventsPablo Neira Ayuso2012-08-312-5/+12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Existing code assumes that del_timer returns true for alive conntrack entries. However, this is not true if reliable events are enabled. In that case, del_timer may return true for entries that were just inserted in the dying list. Note that packets / ctnetlink may hold references to conntrack entries that were just inserted to such list. This patch fixes the issue by adding an independent timer for event delivery. This increases the size of the ecache extension. Still we can revisit this later and use variable size extensions to allocate this area on demand. Tested-by: Oliver Smith <olipro@8.c.9.b.0.7.4.0.1.0.0.2.ip6.arpa> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
| | * netfilter: nf_nat_sip: fix incorrect handling of EBUSY for RTCP expectationPablo Neira Ayuso2012-08-301-1/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We're hitting bug while trying to reinsert an already existing expectation: kernel BUG at kernel/timer.c:895! invalid opcode: 0000 [#1] SMP [...] Call Trace: <IRQ> [<ffffffffa0069563>] nf_ct_expect_related_report+0x4a0/0x57a [nf_conntrack] [<ffffffff812d423a>] ? in4_pton+0x72/0x131 [<ffffffffa00ca69e>] ip_nat_sdp_media+0xeb/0x185 [nf_nat_sip] [<ffffffffa00b5b9b>] set_expected_rtp_rtcp+0x32d/0x39b [nf_conntrack_sip] [<ffffffffa00b5f15>] process_sdp+0x30c/0x3ec [nf_conntrack_sip] [<ffffffff8103f1eb>] ? irq_exit+0x9a/0x9c [<ffffffffa00ca738>] ? ip_nat_sdp_media+0x185/0x185 [nf_nat_sip] We have to remove the RTP expectation if the RTCP expectation hits EBUSY since we keep trying with other ports until we succeed. Reported-by: Rafal Fitt <rafalf@aplusc.com.pl> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
| | * netfilter: nfnetlink_log: fix error return code in init pathJulia Lawall2012-08-301-1/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Initialize return variable before exiting on an error path. A simplified version of the semantic match that finds this problem is as follows: (http://coccinelle.lip6.fr/) // <smpl> ( if@p1 (\(ret < 0\|ret != 0\)) { ... return ret; } | ret@p1 = 0 ) ... when != ret = e1 when != &ret *if(...) { ... when != ret = e2 when forall return ret; } // </smpl> Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
| | * netfilter: ctnetlink: fix error return code in init pathJulia Lawall2012-08-301-1/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Initialize return variable before exiting on an error path. A simplified version of the semantic match that finds this problem is as follows: (http://coccinelle.lip6.fr/) // <smpl> ( if@p1 (\(ret < 0\|ret != 0\)) { ... return ret; } | ret@p1 = 0 ) ... when != ret = e1 when != &ret *if(...) { ... when != ret = e2 when forall return ret; } // </smpl> Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
| | * ipvs: fix error return codeJulia Lawall2012-08-301-1/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Initialize return variable before exiting on an error path. A simplified version of the semantic match that finds this problem is as follows: (http://coccinelle.lip6.fr/) // <smpl> ( if@p1 (\(ret < 0\|ret != 0\)) { ... return ret; } | ret@p1 = 0 ) ... when != ret = e1 when != &ret *if(...) { ... when != ret = e2 when forall return ret; } // </smpl> Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr> Acked-by: Simon Horman <horms@verge.net.au> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
| | * netfilter: nfnetlink_log: fix NLA_PUT macro removal bugPatrick McHardy2012-08-201-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Commit 1db20a52 (nfnetlink_log: Stop using NLA_PUT*().) incorrectly converted a NLA_PUT_BE16 macro to nla_put_be32() in nfnetlink_log: - NLA_PUT_BE16(inst->skb, NFULA_HWTYPE, htons(skb->dev->type)); + if (nla_put_be32(inst->skb, NFULA_HWTYPE, htons(skb->dev->type)) Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
| * | bnx2x: Correct the ndo_poll_controller callMerav Sicron2012-08-301-3/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch correct poll_bnx2x (ndo_poll_controller call) which was not functioning well with MSI-X. Signed-off-by: Merav Sicron <meravs@broadcom.com> Signed-off-by: Dmitry Kravkov <dmitry@broadcom.com> Signed-off-by: Eilon Greenstein <eilong@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | bnx2x: Move netif_napi_add to the open callMerav Sicron2012-08-305-13/+10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Move netif_napi_add for all queues from the probe call to the open call, to avoid the case that napi objects are added for queues that may eventually not be initialized and activated. With the former behavior, the driver could crash when netpoll was calling ndo_poll_controller. Signed-off-by: Merav Sicron <meravs@broadcom.com> Signed-off-by: Dmitry Kravkov <dmitry@broadcom.com> Signed-off-by: Eilon Greenstein <eilong@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | ipv4: must use rcu protection while calling fib_lookupEric Dumazet2012-08-301-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Following lockdep splat was reported by Pavel Roskin : [ 1570.586223] =============================== [ 1570.586225] [ INFO: suspicious RCU usage. ] [ 1570.586228] 3.6.0-rc3-wl-main #98 Not tainted [ 1570.586229] ------------------------------- [ 1570.586231] /home/proski/src/linux/net/ipv4/route.c:645 suspicious rcu_dereference_check() usage! [ 1570.586233] [ 1570.586233] other info that might help us debug this: [ 1570.586233] [ 1570.586236] [ 1570.586236] rcu_scheduler_active = 1, debug_locks = 0 [ 1570.586238] 2 locks held by Chrome_IOThread/4467: [ 1570.586240] #0: (slock-AF_INET){+.-...}, at: [<ffffffff814f2c0c>] release_sock+0x2c/0xa0 [ 1570.586253] #1: (fnhe_lock){+.-...}, at: [<ffffffff815302fc>] update_or_create_fnhe+0x2c/0x270 [ 1570.586260] [ 1570.586260] stack backtrace: [ 1570.586263] Pid: 4467, comm: Chrome_IOThread Not tainted 3.6.0-rc3-wl-main #98 [ 1570.586265] Call Trace: [ 1570.586271] [<ffffffff810976ed>] lockdep_rcu_suspicious+0xfd/0x130 [ 1570.586275] [<ffffffff8153042c>] update_or_create_fnhe+0x15c/0x270 [ 1570.586278] [<ffffffff815305b3>] __ip_rt_update_pmtu+0x73/0xb0 [ 1570.586282] [<ffffffff81530619>] ip_rt_update_pmtu+0x29/0x90 [ 1570.586285] [<ffffffff815411dc>] inet_csk_update_pmtu+0x2c/0x80 [ 1570.586290] [<ffffffff81558d1e>] tcp_v4_mtu_reduced+0x2e/0xc0 [ 1570.586293] [<ffffffff81553bc4>] tcp_release_cb+0xa4/0xb0 [ 1570.586296] [<ffffffff814f2c35>] release_sock+0x55/0xa0 [ 1570.586300] [<ffffffff815442ef>] tcp_sendmsg+0x4af/0xf50 [ 1570.586305] [<ffffffff8156fc60>] inet_sendmsg+0x120/0x230 [ 1570.586308] [<ffffffff8156fb40>] ? inet_sk_rebuild_header+0x40/0x40 [ 1570.586312] [<ffffffff814f4bdd>] ? sock_update_classid+0xbd/0x3b0 [ 1570.586315] [<ffffffff814f4c50>] ? sock_update_classid+0x130/0x3b0 [ 1570.586320] [<ffffffff814ec435>] do_sock_write+0xc5/0xe0 [ 1570.586323] [<ffffffff814ec4a3>] sock_aio_write+0x53/0x80 [ 1570.586328] [<ffffffff8114bc83>] do_sync_write+0xa3/0xe0 [ 1570.586332] [<ffffffff8114c5a5>] vfs_write+0x165/0x180 [ 1570.586335] [<ffffffff8114c805>] sys_write+0x45/0x90 [ 1570.586340] [<ffffffff815d2722>] system_call_fastpath+0x16/0x1b Signed-off-by: Eric Dumazet <edumazet@google.com> Reported-by: Pavel Roskin <proski@gnu.org> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | bnx2x: fix 57840_MF pci idYuval Mintz2012-08-301-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Commit c3def943c7117d42caaed3478731ea7c3c87190e have added support for new pci ids of the 57840 board, while failing to change the obsolete value in 'pci_ids.h'. This patch does so, allowing the probe of such devices. Signed-off-by: Yuval Mintz <yuvalmin@broadcom.com> Signed-off-by: Eilon Greenstein <eilong@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | net: ipv4: ipmr_expire_timer causes crash when removing net namespaceFrancesco Ruggeri2012-08-301-2/+12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When tearing down a net namespace, ipv4 mr_table structures are freed without first deactivating their timers. This can result in a crash in run_timer_softirq. This patch mimics the corresponding behaviour in ipv6. Locking and synchronization seem to be adequate. We are about to kfree mrt, so existing code should already make sure that no other references to mrt are pending or can be created by incoming traffic. The functions invoked here do not cause new references to mrt or other race conditions to be created. Invoking del_timer_sync guarantees that ipmr_expire_timer is inactive. Both ipmr_expire_process (whose completion we may have to wait in del_timer_sync) and mroute_clean_tables internally use mfc_unres_lock or other synchronizations when needed, and they both only modify mrt. Tested in Linux 3.4.8. Signed-off-by: Francesco Ruggeri <fruggeri@aristanetworks.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | e1000e: DoS while TSO enabled caused by link partner with small MSSBruce Allan2012-08-302-25/+24
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | With a low enough MSS on the link partner and TSO enabled locally, the networking stack can periodically send a very large (e.g. 64KB) TCP message for which the driver will attempt to use more Tx descriptors than are available by default in the Tx ring. This is due to a workaround in the code that imposes a limit of only 4 MSS-sized segments per descriptor which appears to be a carry-over from the older e1000 driver and may be applicable only to some older PCI or PCIx parts which are not supported in e1000e. When the driver gets a message that is too large to fit across the configured number of Tx descriptors, it stops the upper stack from queueing any more and gets stuck in this state. After a timeout, the upper stack assumes the adapter is hung and calls the driver to reset it. Remove the unnecessary limitation of using up to only 4 MSS-sized segments per Tx descriptor, and put in a hard failure test to catch when attempting to check for message sizes larger than would fit in the whole Tx ring. Refactor the remaining logic that limits the size of data per Tx descriptor from a seemingly arbitrary 8KB to a limit based on the dynamic size of the Tx packet buffer as described in the hardware specification. Also, fix the logic in the check for space in the Tx ring for the next largest possible packet after the current one has been successfully queued for transmit, and use the appropriate defines for default ring sizes in e1000_probe instead of magic values. This issue goes back to the introduction of e1000e in 2.6.24 when it was split off from e1000. Reported-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: Bruce Allan <bruce.w.allan@intel.com> Cc: Stable <stable@vger.kernel.org> [2.6.24+] Tested-by: Aaron Brown <aaron.f.brown@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | l2tp: avoid to use synchronize_rcu in tunnel free functionxeb@mail.ru2012-08-302-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | Avoid to use synchronize_rcu in l2tp_tunnel_free because context may be atomic. Signed-off-by: Dmitry Kozlov <xeb@mail.ru> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | gianfar: fix default tx vlan offload feature flagClaudiu Manoil2012-08-301-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Commit - "b852b72 gianfar: fix bug caused by 87c288c6e9aa31720b72e2bc2d665e24e1653c3e" disables by default (on mac init) the hw vlan tag insertion. The "features" flags were not updated to reflect this, and "ethtool -K" shows tx-vlan-offload to be "on" by default. Cc: Sebastian Poehn <sebastian.poehn@belden.com> Signed-off-by: Claudiu Manoil <claudiu.manoil@freescale.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | xen-netfront: use __pskb_pull_tail to ensure linear area is big enough on RXIan Campbell2012-08-301-29/+10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | I'm slightly concerned by the "only in exceptional circumstances" comment on __pskb_pull_tail but the structure of an skb just created by netfront shouldn't hit any of the especially slow cases. This approach still does slightly more work than the old way, since if we pull up the entire first frag we now have to shuffle everything down where before we just received into the right place in the first place. Signed-off-by: Ian Campbell <ian.campbell@citrix.com> Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Cc: Jeremy Fitzhardinge <jeremy@goop.org> Cc: Mel Gorman <mgorman@suse.de> Cc: xen-devel@lists.xensource.com Cc: netdev@vger.kernel.org Cc: linux-kernel@vger.kernel.org Tested-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Acked-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | netpoll: revert 6bdb7fe3104 and fix be_poll() insteadAmerigo Wang2012-08-293-11/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Against -net. In the patch "netpoll: re-enable irq in poll_napi()", I tried to fix the following warning: [100718.051041] ------------[ cut here ]------------ [100718.051048] WARNING: at kernel/softirq.c:159 local_bh_enable_ip+0x7d/0xb0() (Not tainted) [100718.051049] Hardware name: ProLiant BL460c G7 ... [100718.051068] Call Trace: [100718.051073] [<ffffffff8106b747>] ? warn_slowpath_common+0x87/0xc0 [100718.051075] [<ffffffff8106b79a>] ? warn_slowpath_null+0x1a/0x20 [100718.051077] [<ffffffff810747ed>] ? local_bh_enable_ip+0x7d/0xb0 [100718.051080] [<ffffffff8150041b>] ? _spin_unlock_bh+0x1b/0x20 [100718.051085] [<ffffffffa00ee974>] ? be_process_mcc+0x74/0x230 [be2net] [100718.051088] [<ffffffffa00ea68c>] ? be_poll_tx_mcc+0x16c/0x290 [be2net] [100718.051090] [<ffffffff8144fe76>] ? netpoll_poll_dev+0xd6/0x490 [100718.051095] [<ffffffffa01d24a5>] ? bond_poll_controller+0x75/0x80 [bonding] [100718.051097] [<ffffffff8144fde5>] ? netpoll_poll_dev+0x45/0x490 [100718.051100] [<ffffffff81161b19>] ? ksize+0x19/0x80 [100718.051102] [<ffffffff81450437>] ? netpoll_send_skb_on_dev+0x157/0x240 by reenabling IRQ before calling ->poll, but it seems more problems are introduced after that patch: http://ozlabs.org/~akpm/stuff/IMG_20120824_122054.jpg http://marc.info/?l=linux-netdev&m=134563282530588&w=2 So it is safe to fix be2net driver code directly. This patch reverts the offending commit and fixes be_poll() by avoid disabling BH there, this is okay because be_poll() can be called either by poll_napi() which already disables IRQ, or by net_rx_action() which already disables BH. Reported-by: Andrew Morton <akpm@linux-foundation.org> Reported-by: Sylvain Munaut <s.munaut@whatever-company.com> Cc: Sylvain Munaut <s.munaut@whatever-company.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: David Miller <davem@davemloft.net> Cc: Sathya Perla <sathya.perla@emulex.com> Cc: Subbu Seetharaman <subbu.seetharaman@emulex.com> Cc: Ajit Khaparde <ajit.khaparde@emulex.com> Signed-off-by: Cong Wang <amwang@redhat.com> Tested-by: Sylvain Munaut <s.munaut@whatever-company.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | Merge branch 'sfc-3.6' of git://git.kernel.org/pub/scm/linux/kernel/git/bwh/sfcDavid S. Miller2012-08-241-2/+2
| |\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Ben Hutchings says: ==================== Simple fix for a braino. Please also queue this for the 3.4 and 3.5 stable series. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
| | * | sfc: Fix reporting of IPv4 full filters through ethtoolBen Hutchings2012-08-241-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | ETHTOOL_GRXCLSRULE returns filters for a TCP/IPv4 or UDP/IPv4 4-tuple with source and destination swapped. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
| * | | Merge branch 'fixes-for-3.6' of git://gitorious.org/linux-can/linux-canDavid S. Miller2012-08-242-4/+7
| |\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Marc Kleine-Budde says: ==================== here are two fixes for the v3.6 release cycle. Alexey Khoroshilov submitted a fix for a memory leak in the softing driver (in softing_load_fw()) in case a krealloc() fails. Sven Schmitt fixed the misuse of the IRQF_SHARED flag in the irq resouce of the sja1000 platform driver, now the correct flag is used. There are no mainline users of this feature which need to be converted. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
| | * | | can: sja1000_platform: fix wrong flag IRQF_SHARED for interrupt sharingSven Schmitt2012-08-241-1/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The sja1000 platform driver wrongly assumes that a shared IRQ is indicated with the IRQF_SHARED flag in irq resource flags. This patch changes the driver to handle the correct flag IORESOURCE_IRQ_SHAREABLE instead. There are no mainline users of the platform driver which wrongly make use of IRQF_SHARED. Signed-off-by: Sven Schmitt <sven.schmitt@volkswagen.de> Acked-by: Yegor Yefremov <yegorslists@googlemail.com> Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
generated by cgit v1.2.3 (git 2.39.1) at 2025-01-23 13:17:05 +0100