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2014-11-11PPC: bpf_jit_comp: add SKF_AD_HATYPE instructionDenis Kirjanov1-4/+13
Add BPF extension SKF_AD_HATYPE to ppc JIT to check the hw type of the interface Before: [ 57.723666] test_bpf: #20 LD_HATYPE [ 57.723675] BPF filter opcode 0020 (@0) unsupported [ 57.724168] 48 48 PASS After: [ 103.053184] test_bpf: #20 LD_HATYPE 7 6 PASS CC: Alexei Starovoitov<alexei.starovoitov@gmail.com> CC: Daniel Borkmann<dborkman@redhat.com> CC: Philippe Bergheaud<felix@linux.vnet.ibm.com> Signed-off-by: Denis Kirjanov <kda@linux-powerpc.org> v2: address Alexei's comments Acked-by: Alexei Starovoitov <ast@plumgrid.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-11-11dsa: Use netdev_<level> instead of printkJoe Perches2-21/+17
Neaten and standardize the logging output. Other miscellanea: o Use pr_notice_once instead of a guard flag. o Convert existing pr_<level> uses too. Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-11-11net/mlx4_en: Extend checksum offloading by CHECKSUM COMPLETEShani Michaeli7-8/+142
When processing received traffic, pass CHECKSUM_COMPLETE status to the stack, with calculated checksum for non TCP/UDP packets (such as GRE or ICMP). Although the stack expects checksum which doesn't include the pseudo header, the HW adds it. To address that, we are subtracting the pseudo header checksum from the checksum value provided by the HW. In the IPv6 case, we also compute/add the IP header checksum which is not added by the HW for such packets. Cc: Jerry Chu <hkchu@google.com> Signed-off-by: Shani Michaeli <shanim@mellanox.com> Signed-off-by: Matan Barak <matanb@mellanox.com> Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-11-11net/mlx4_en: Extend usage of napi_gro_fragsShani Michaeli1-54/+54
We can call napi_gro_frags for all the received traffic regardless of the checksum status. Specifically, received packets whose status is CHECKSUM_NONE (and soon to be added CHECKSUM_COMPLETE) are eligible for napi_gro_frags as well. Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com> Signed-off-by: Shani Michaeli <shanim@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-11-11net: introduce SO_INCOMING_CPUEric Dumazet21-2/+52
Alternative to RPS/RFS is to use hardware support for multiple queues. Then split a set of million of sockets into worker threads, each one using epoll() to manage events on its own socket pool. Ideally, we want one thread per RX/TX queue/cpu, but we have no way to know after accept() or connect() on which queue/cpu a socket is managed. We normally use one cpu per RX queue (IRQ smp_affinity being properly set), so remembering on socket structure which cpu delivered last packet is enough to solve the problem. After accept(), connect(), or even file descriptor passing around processes, applications can use : int cpu; socklen_t len = sizeof(cpu); getsockopt(fd, SOL_SOCKET, SO_INCOMING_CPU, &cpu, &len); And use this information to put the socket into the right silo for optimal performance, as all networking stack should run on the appropriate cpu, without need to send IPI (RPS/RFS). Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-11-11tcp: move sk_mark_napi_id() at the right placeEric Dumazet2-2/+4
sk_mark_napi_id() is used to record for a flow napi id of incoming packets for busypoll sake. We should do this only on established flows, not on listeners. This was 'working' by virtue of the socket cloning, but doing this on SYN packets in unecessary cache line dirtying. Even if we move sk_napi_id in the same cache line than sk_lock, we are working to make SYN processing lockless, so it is desirable to set sk_napi_id only for established flows. Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-11-10mlx4: restore conditional call to napi_complete_done()Eric Dumazet1-7/+8
After commit 1a28817282 ("mlx4: use napi_complete_done()") we ended up calling napi_complete_done() in the case NAPI poll consumed all its budget. This added extra interrupt pressure, this patch restores proper behavior. Signed-off-by: Eric Dumazet <edumazet@google.com> Fixes: 1a28817282 ("mlx4: use napi_complete_done()") Signed-off-by: David S. Miller <davem@davemloft.net>
2014-11-10sunvnet: Add missing rcu_read_unlock() in vnet_start_xmitSowmini Varadhan1-1/+3
The out_dropped label will only do rcu_read_unlock for non-null port. So add the missing rcu_read_unlock() when bailing due to non-null port. Signed-off-by: Sowmini Varadhan <sowmini.varadhan@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-11-10sunvnet: vnet_ack() should check if !start_cons to send a missed triggerSowmini Varadhan1-1/+1
As per comments in vnet_start_xmit, for the edge case when outgoing vnet_start_xmit() data and an incoming STOPPED ACK cross each other in flight, we may need to send the missed START trigger from maybe_tx_wakeup() after checking for a false value of start_cons Signed-off-by: Sowmini Varadhan <sowmini.varadhan@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-11-10sunvnet: Fix race between vnet_start_xmit() and vnet_ack()Sowmini Varadhan1-4/+6
When vnet_start_xmit() is concurrent with vnet_ack(), we may have a race that looks like: thread 1 thread 2 vnet_start_xmit vnet_event_napi -> vnet_rx __vnet_tx_trigger for some desc X at this point dr->prod == X peer sends back a stopped ack for X we process X, but X == dr->prod so we bail out in vnet_ack with !idx_is_pending update dr->prod As a result of the fact that we never processed the stopped ack for X, the Tx path is led to incorrectly believe that the peer is still "started" and reading, but the peer has stopped reading, which will ultimately end in flow-control assertions. The fix is to synchronize the above 2 paths on the netif_tx_lock. Signed-off-by: Sowmini Varadhan <sowmini.varadhan@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-11-108139too: Allow using the largest possible MTUAlban Bedel1-1/+1
This driver allows MTU up to 1518 bytes which is not enought to run batman-adv. Simply raise the maximum packet size up to the maximum allowed by the transmit descriptor, 1792 bytes, giving a maximum MTU of 1774 bytes. Signed-off-by: Alban Bedel <albeu@free.fr> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-11-108139too: Allow setting MTU larger than 1500Alban Bedel1-1/+12
Replace the default ndo_change_mtu callback with one that allow setting MTU that the driver can handle. Signed-off-by: Alban Bedel <albeu@free.fr> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-11-10ipv4: Avoid reading user iov twice after raw_probe_proto_optHerbert Xu1-8/+54
Ever since raw_probe_proto_opt was added it had the problem of causing the user iov to be read twice, once during the probe for the protocol header and once again in ip_append_data. This is a potential security problem since it means that whatever we're probing may be invalid. This patch plugs the hole by firstly advancing the iov so we don't read the same spot again, and secondly saving what we read the first time around for use by ip_append_data. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-11-10ipv4: Use standard iovec primitive in raw_probe_proto_optHerbert Xu1-39/+11
The function raw_probe_proto_opt tries to extract the first two bytes from the user input in order to seed the IPsec lookup for ICMP packets. In doing so it's processing iovec by hand and overcomplicating things. This patch replaces the manual iovec processing with a call to memcpy_fromiovecend. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-11-10net: Move bonding headers under include/netDavid S. Miller14-31/+30
This ways drivers like cxgb4 don't need to do ugly relative includes. Reported-by: Joe Perches <joe@perches.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-11-10cxgb4: Remove unnecessary struct in6_addr * castsJoe Perches1-6/+3
Just use the address of the in6_addr. Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-11-10cxgb4: Cleanup macros so they follow the same style and look consistent, part 2Hariprasad Shenai21-430/+509
Various patches have ended up changing the style of the symbolic macros/register defines to different style. As a result, the current kernel.org files are a mix of different macro styles. Since this macro/register defines is used by different drivers a few patch series have ended up adding duplicate macro/register define entries with different styles. This makes these register define/macro files a complete mess and we want to make them clean and consistent. This patch cleans up a part of it. Signed-off-by: Hariprasad Shenai <hariprasad@chelsio.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-11-10cxgb4: Cleanup macros so they follow the same style and look consistentHariprasad Shenai7-62/+106
Various patches have ended up changing the style of the symbolic macros/register to different style. As a result, the current kernel.org files are a mix of different macro styles. Since this macro/register defines is used by different drivers a few patch series have ended up adding duplicate macro/register define entries with different styles. This makes these register define/macro files a complete mess and we want to make them clean and consistent. This patch cleans up a part of it. Signed-off-by: Hariprasad Shenai <hariprasad@chelsio.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-11-10cxgb4: Add cxgb4_debugfs.c, move all debugfs code to new fileHariprasad Shenai5-92/+217
Signed-off-by: Hariprasad Shenai <hariprasad@chelsio.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-11-10mlx4: use napi_complete_done()Eric Dumazet1-7/+4
To enable gro_flush_timeout, a driver has to use napi_complete_done() instead of napi_complete(). Tested: Ran 200 netperf TCP_STREAM from A to B (10Gbe mlx4 link, 8 RX queues) Without this feature, we send back about 305,000 ACK per second. GRO aggregation ratio is low (811/305 = 2.65 segments per GRO packet) Setting a timer of 2000 nsec is enough to increase GRO packet sizes and reduce number of ACK packets. (811/19.2 = 42) Receiver performs less calls to upper stacks, less wakes up. This also reduces cpu usage on the sender, as it receives less ACK packets. Note that reducing number of wakes up increases cpu efficiency, but can decrease QPS, as applications wont have the chance to warmup cpu caches doing a partial read of RPC requests/answers if they fit in one skb. B:~# sar -n DEV 1 10 | grep eth0 | tail -1 Average: eth0 811269.80 305732.30 1199462.57 19705.72 0.00 0.00 0.50 B:~# echo 2000 >/sys/class/net/eth0/gro_flush_timeout B:~# sar -n DEV 1 10 | grep eth0 | tail -1 Average: eth0 811577.30 19230.80 1199916.51 1239.80 0.00 0.00 0.50 Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-11-10net: gro: add a per device gro flush timerEric Dumazet3-14/+69
Tuning coalescing parameters on NIC can be really hard. Servers can handle both bulk and RPC like traffic, with conflicting goals : bulk flows want as big GRO packets as possible, RPC want minimal latencies. To reach big GRO packets on 10Gbe NIC, one can use : ethtool -C eth0 rx-usecs 4 rx-frames 44 But this penalizes rpc sessions, with an increase of latencies, up to 50% in some cases, as NICs generally do not force an interrupt when a packet with TCP Push flag is received. Some NICs do not have an absolute timer, only a timer rearmed for every incoming packet. This patch uses a different strategy : Let GRO stack decides what do do, based on traffic pattern. Packets with Push flag wont be delayed. Packets without Push flag might be held in GRO engine, if we keep receiving data. This new mechanism is off by default, and shall be enabled by setting /sys/class/net/ethX/gro_flush_timeout to a value in nanosecond. To fully enable this mechanism, drivers should use napi_complete_done() instead of napi_complete(). Tested: Ran 200 netperf TCP_STREAM from A to B (10Gbe mlx4 link, 8 RX queues) Without this feature, we send back about 305,000 ACK per second. GRO aggregation ratio is low (811/305 = 2.65 segments per GRO packet) Setting a timer of 2000 nsec is enough to increase GRO packet sizes and reduce number of ACK packets. (811/19.2 = 42) Receiver performs less calls to upper stacks, less wakes up. This also reduces cpu usage on the sender, as it receives less ACK packets. Note that reducing number of wakes up increases cpu efficiency, but can decrease QPS, as applications wont have the chance to warmup cpu caches doing a partial read of RPC requests/answers if they fit in one skb. B:~# sar -n DEV 1 10 | grep eth0 | tail -1 Average: eth0 811269.80 305732.30 1199462.57 19705.72 0.00 0.00 0.50 B:~# echo 2000 >/sys/class/net/eth0/gro_flush_timeout B:~# sar -n DEV 1 10 | grep eth0 | tail -1 Average: eth0 811577.30 19230.80 1199916.51 1239.80 0.00 0.00 0.50 Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-11-10rtnetlink: add babel protocol recognitionDave Taht1-0/+1
Babel uses rt_proto 42. Add to userspace visible header file. Signed-off-by: Dave Taht <dave.taht@bufferbloat.net> Signed-off-by: Stephen Hemminger <stephen@networkplumber.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-11-09openvswitch: Add support for OVS_FLOW_ATTR_PROBE.Jarno Rajahalme7-168/+208
This new flag is useful for suppressing error logging while probing for datapath features using flow commands. For backwards compatibility reasons the commands are executed normally, but error logging is suppressed. Signed-off-by: Jarno Rajahalme <jrajahalme@nicira.com> Signed-off-by: Pravin B Shelar <pshelar@nicira.com>
2014-11-09openvswitch: Constify various function argumentsThomas Graf11-36/+38
Help produce better optimized code. Signed-off-by: Thomas Graf <tgraf@noironetworks.com> Signed-off-by: Pravin B Shelar <pshelar@nicira.com>
2014-11-09openvswitch: Remove redundant key ref from upcall_info.Pravin B Shelar3-28/+32
struct dp_upcall_info has pointer to pkt_key which is already available in OVS_CB. This also simplifies upcall handling for gso packet. Signed-off-by: Pravin B Shelar <pshelar@nicira.com> Acked-by: Andy Zhou <azhou@nicira.com>
2014-11-09openvswitch: Optimize recirc action.Pravin B Shelar1-45/+106
OVS need to flow key for flow lookup in recic action. OVS does key extract in recic action. Most of cases we could use OVS_CB packet key directly and can avoid packet flow key extract. SET action we can update flow-key along with packet to keep it consistent. But there are some action like MPLS pop which forces OVS to do flow-extract. In such cases we can mark flow key as invalid so that subsequent recirc action can do full flow extract. Signed-off-by: Pravin B Shelar <pshelar@nicira.com> Acked-by: Jarno Rajahalme <jrajahalme@nicira.com> Acked-by: Andy Zhou <azhou@nicira.com>
2014-11-09openvswitch: Extend packet attribute for egress tunnel infoWenyu Zhang12-31/+275
OVS vswitch has extended IPFIX exporter to export tunnel headers to improve network visibility. To export this information userspace needs to know egress tunnel for given packet. By extending packet attributes datapath can export egress tunnel info for given packet. So that userspace can ask for egress tunnel info in userspace action. This information is used to build IPFIX data for given flow. Signed-off-by: Wenyu Zhang <wenyuz@vmware.com> Acked-by: Romain Lenglet <rlenglet@vmware.com> Acked-by: Ben Pfaff <blp@nicira.com> Signed-off-by: Pravin B Shelar <pshelar@nicira.com>
2014-11-09openvswitch: Export symbols as GPL symbols.Pravin B Shelar2-8/+8
vport can be compiled as modules, therefore openvswitch needs to export few symbols. Export them as GPL symbols. CC: Thomas Graf <tgraf@noironetworks.com> Signed-off-by: Pravin B Shelar <pshelar@nicira.com>
2014-11-08dccp: Convert DCCP_WARN to net_warn_ratelimitedJoe Perches1-2/+2
Remove the dependency on the "warning" sysctl (net_msg_warn) which is only used by the LIMIT_NETDEBUG macro. Convert the LIMIT_NETDEBUG use in DCCP_WARN to the more common net_warn_ratelimited mechanism. This still ratelimits based on the net_ratelimit() function, but removes the check for the sysctl. Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-11-07udp: Increment UDP_MIB_IGNOREDMULTI for arriving unmatched multicastsRick Jones5-6/+20
As NIC multicast filtering isn't perfect, and some platforms are quite content to spew broadcasts, we should not trigger an event for skb:kfree_skb when we do not have a match for such an incoming datagram. We do though want to avoid sweeping the matter under the rug entirely, so increment a suitable statistic. This incorporates feedback from David L. Stevens, Karl Neiss and Eric Dumazet. V3 - use bool per David Miller Signed-off-by: Rick Jones <rick.jones2@hp.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-11-07cdc-ether: implement MULTICAST flag on the deviceOliver Neukum1-9/+10
Olivier having laid the groundwork this patch transmits the multicast flag to the device to save some bus traffic. Signed-off-by: Oliver Neukum <oneukum@suse.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-11-07uapi: resort Kbuild entriesstephen hemminger1-44/+44
The entries in the Kbuild files are incorrectly sorted. Matters for aesthetics only. Signed-off-by: Stephen Hemminger <stephen@networkplumber.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-11-07stmmac: platform: fix sparse warningsAndy Shevchenko7-6/+39
This patch fixes the following sparse warnings. One is fixed by casting return value to a return type of the function. The others by creating a specific stmmac_platform.h which provides the bits related to the platform driver. drivers/net/ethernet/stmicro/stmmac/dwmac-meson.c:59:29: warning: incorrect type in return expression (different address spaces) drivers/net/ethernet/stmicro/stmmac/dwmac-meson.c:59:29: expected void * drivers/net/ethernet/stmicro/stmmac/dwmac-meson.c:59:29: got void [noderef] <asn:2>*reg drivers/net/ethernet/stmicro/stmmac/dwmac-meson.c:64:29: warning: symbol 'meson6_dwmac_data' was not declared. Should it be static? drivers/net/ethernet/stmicro/stmmac/dwmac-sti.c:354:29: warning: symbol 'stih4xx_dwmac_data' was not declared. Should it be static? drivers/net/ethernet/stmicro/stmmac/dwmac-sti.c:361:29: warning: symbol 'stid127_dwmac_data' was not declared. Should it be static? drivers/net/ethernet/stmicro/stmmac/dwmac-sunxi.c:133:29: warning: symbol 'sun7i_gmac_data' was not declared. Should it be static? Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-11-07stmmac: remove custom implementation of print_hex_dump()Andy Shevchenko1-8/+2
There is a kernel helper to dump buffers in a hexdecimal format. This patch substitutes the open coded function by calling that helper. The output is slightly changed: - no lead space - ASCII part will be printed along with the dump - offset is longer than 3 characters (now 8) Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-11-07net: Kill skb_copy_datagram_const_iovecHerbert Xu2-92/+0
Now that both macvtap and tun are using skb_copy_datagram_iter, we can kill the abomination that is skb_copy_datagram_const_iovec. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-11-07macvtap: Use iovec iteratorsHerbert Xu1-25/+21
This patch removes the use of skb_copy_datagram_const_iovec in favour of the iovec iterator-based skb_copy_datagram_iter. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-11-07tun: Use iovec iteratorsHerbert Xu1-35/+30
This patch removes the use of skb_copy_datagram_const_iovec in favour of the iovec iterator-based skb_copy_datagram_iter. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-11-07inet: Add skb_copy_datagram_iterHerbert Xu2-0/+90
This patch adds skb_copy_datagram_iter, which is identical to skb_copy_datagram_iovec except that it operates on iov_iter instead of iovec. Eventually all users of skb_copy_datagram_iovec should switch over to iov_iter and then we can remove skb_copy_datagram_iovec. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-11-06vxlan: Fix to enable UDP checksums on interfaceTom Herbert1-0/+3
Add definition to vxlan nla_policy for UDP checksum. This is necessary to enable UDP checksums on VXLAN. In some instances, enabling UDP checksums can improve performance on receive for devices that return legacy checksum-unnecessary for UDP/IP. Also, UDP checksum provides some protection against VNI corruption. Testing: Ran 200 instances of TCP_STREAM and TCP_RR on bnx2x. TCP_STREAM IPv4, without UDP checksums 14.41% TX CPU utilization 25.71% RX CPU utilization 9083.4 Mbps IPv4, with UDP checksums 13.99% TX CPU utilization 13.40% RX CPU utilization 9095.65 Mbps TCP_RR IPv4, without UDP checksums 94.08% TX CPU utilization 156/248/462 90/95/99% latencies 1.12743e+06 tps IPv4, with UDP checksums 94.43% TX CPU utilization 158/250/462 90/95/99% latencies 1.13345e+06 tps Signed-off-by: Tom Herbert <therbert@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-11-06amd-xgbe: Check for complete packet on skb allocation errorLendacky, Thomas1-2/+2
If the skb allocation fails during receive processing, the driver would continue reading descriptors without first determining if there were any more descriptors for the current packet. Update the code to check whether more descriptors are associated with the current packet or whether to move on to the next descriptor as a new packet. Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-11-06amd-xgbe: Free channel/ring structures laterLendacky, Thomas1-3/+3
The channel structure is freed before freeing the per channel interrupts resulting in a kernel oops. Move the call to free the channel structure to after the freeing of the per channel interrupts. Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-11-06netxen: Fix link event handling.Manish Chopra1-1/+2
o Poll for the link events only if firmware doesn't have capability to notify the driver for the link events. Signed-off-by: Manish Chopra <manish.chopra@qlogic.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-11-06enic: update desc properly in rx_copybreakGovindarajulu Varadarajan1-12/+2
When we reuse the rx buffer, we need to update the desc. If not hardware sees stale value. In the following crash, when mtu is changed, hardware sees old rx buffer value and crashes on skb_put. Fix this by using enic_queue_rq_desc helper function which updates the necessary desc. [ 64.657376] skbuff: skb_over_panic: text:ffffffffa041f55d len:9010 put:9010 head:ffff8800d3ca9fc0 data:ffff8800d3caa000 tail:0x2372 end:0x640 dev:enp0s3 [ 64.659965] ------------[ cut here ]------------ [ 64.661322] kernel BUG at net/core/skbuff.c:100! [ 64.662644] invalid opcode: 0000 [#1] PREEMPT SMP [ 64.664001] Modules linked in: rpcsec_gss_krb5 auth_rpcgss oid_registry nfsv4 cirrus ttm drm_kms_helper drm enic psmouse microcode evdev serio_raw syscopyarea sysfillrect sysimgblt i2c_piix4 i2c_core pcspkr nfs lockd grace sunrpc fscache ext4 crc16 mbcache jbd2 sd_mod ata_generic virtio_balloon ata_piix libata uhci_hcd virtio_pci virtio_ring usbcore usb_common virtio scsi_mod [ 64.664834] CPU: 0 PID: 0 Comm: swapper/0 Tainted: G W 3.17.0-netnext-10335-g942396b-dirty #273 [ 64.664834] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 64.664834] task: ffffffff81a1d580 ti: ffffffff81a00000 task.ti: ffffffff81a00000 [ 64.664834] RIP: 0010:[<ffffffff81392cf1>] [<ffffffff81392cf1>] skb_panic+0x61/0x70 [ 64.664834] RSP: 0018:ffff880210603d48 EFLAGS: 00010292 [ 64.664834] RAX: 000000000000008c RBX: ffff88020b0f6930 RCX: 0000000000000000 [ 64.664834] RDX: 000000000000008c RSI: ffffffff8178b288 RDI: 00000000ffffffff [ 64.664834] RBP: ffff880210603d68 R08: 0000000000000001 R09: 0000000000000001 [ 64.664834] R10: 00000000000005ce R11: 0000000000000001 R12: ffff88020b1f0b40 [ 64.664834] R13: 000000000000a332 R14: ffff880209a1a000 R15: 0000000000000001 [ 64.664834] FS: 0000000000000000(0000) GS:ffff880210600000(0000) knlGS:0000000000000000 [ 64.664834] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b [ 64.664834] CR2: 00007f6752935e48 CR3: 0000000035743000 CR4: 00000000000006f0 [ 64.664834] Stack: [ 64.664834] ffff8800d3caa000 0000000000002372 0000000000000640 ffff88020b1f0000 [ 64.664834] ffff880210603d78 ffffffff81392d54 ffff880210603e08 ffffffffa041f55d [ 64.664834] 0000000000000296 ffffffff00000000 00008e7e00008e7e ffff880200002332 [ 64.664834] Call Trace: [ 64.664834] <IRQ> [ 64.664834] [ 64.664834] [<ffffffff81392d54>] skb_put+0x54/0x60 [ 64.664834] [<ffffffffa041f55d>] enic_rq_service.constprop.47+0x3ad/0x730 [enic] [ 64.664834] [<ffffffffa041fa79>] enic_poll_msix_rq+0x199/0x370 [enic] [ 64.664834] [<ffffffff813a5499>] net_rx_action+0x139/0x210 [ 64.664834] [<ffffffff81290db3>] ? __this_cpu_preempt_check+0x13/0x20 [ 64.664834] [<ffffffff8106110e>] __do_softirq+0x14e/0x280 [ 64.664834] [<ffffffff8106152e>] irq_exit+0x8e/0xb0 [ 64.664834] [<ffffffff8100fd21>] do_IRQ+0x61/0x100 [ 64.664834] [<ffffffff814a2bf2>] common_interrupt+0x72/0x72 fixes: a03bb56e67c357980dae886683733dab5583dc14 ("enic: implement rx_copybreak") Signed-off-by: Govindarajulu Varadarajan <_govind@gmx.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-11-06enic: handle error condition properly in enic_rq_indicate_bufGovindarajulu Varadarajan1-0/+6
In case of error in rx path, we free the buf->os_buf but we do not make it NULL. In next iteration we use the skb which is already freed. This causes the following crash. [ 886.154772] general protection fault: 0000 [#1] PREEMPT SMP [ 886.154851] Modules linked in: rpcsec_gss_krb5 auth_rpcgss oid_registry nfsv4 microcode evdev cirrus ttm drm_kms_helper drm enic syscopyarea sysfillrect sysimgblt psmouse i2c_piix4 serio_raw pcspkr i2c_core nfs lockd grace sunrpc fscache ext4 crc16 mbcache jbd2 sd_mod crc_t10dif crct10dif_common ata_generic ata_piix virtio_balloon libata scsi_mod uhci_hcd usbcore virtio_pci virtio_ring virtio usb_common [ 886.155199] CPU: 0 PID: 0 Comm: swapper/0 Tainted: G W 3.17.0-netnext-05668-g876bc7f #272 [ 886.155263] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 886.155304] task: ffffffff81a1d580 ti: ffffffff81a00000 task.ti: ffffffff81a00000 [ 886.155356] RIP: 0010:[<ffffffff81384030>] [<ffffffff81384030>] kfree_skb_list+0x10/0x30 [ 886.155418] RSP: 0018:ffff880210603d48 EFLAGS: 00010206 [ 886.155456] RAX: 0000000000000020 RBX: 0000000000000000 RCX: 0000000000000000 [ 886.155504] RDX: 0000000000000000 RSI: 0000000000000001 RDI: 004500084e000017 [ 886.155553] RBP: ffff880210603d50 R08: 00000000fe13d1b6 R09: 0000000000000001 [ 886.155601] R10: 0000000000000000 R11: 0000000000000000 R12: ffff880209ff2f00 [ 886.155650] R13: ffff88020ac0fe40 R14: ffff880209ff2f00 R15: ffff8800da8e3a80 [ 886.155699] FS: 0000000000000000(0000) GS:ffff880210600000(0000) knlGS:0000000000000000 [ 886.155774] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b [ 886.155814] CR2: 00007f0e0c925000 CR3: 0000000035e8b000 CR4: 00000000000006f0 [ 886.155865] Stack: [ 886.155882] 0000000000000000 ffff880210603d78 ffffffff81383f79 ffff880209ff2f00 [ 886.155942] ffff88020b0c0b40 000000000000c000 ffff880210603d90 ffffffff81383faf [ 886.156001] ffff880209ff2f00 ffff880210603da8 ffffffff8138406d ffff88020b1b08c0 [ 886.156061] Call Trace: [ 886.156080] <IRQ> [ 886.156095] [ 886.156112] [<ffffffff81383f79>] skb_release_data+0xa9/0xc0 [ 886.157656] [<ffffffff81383faf>] skb_release_all+0x1f/0x30 [ 886.159195] [<ffffffff8138406d>] consume_skb+0x1d/0x40 [ 886.160719] [<ffffffff813942e5>] __dev_kfree_skb_any+0x35/0x40 [ 886.162224] [<ffffffffa02dc1d5>] enic_rq_service.constprop.47+0xe5/0x5a0 [enic] [ 886.163756] [<ffffffffa02dc829>] enic_poll_msix_rq+0x199/0x370 [enic] [ 886.164730] [<ffffffff81397e29>] net_rx_action+0x139/0x210 [ 886.164730] [<ffffffff8105fb2e>] __do_softirq+0x14e/0x280 [ 886.164730] [<ffffffff8105ff2e>] irq_exit+0x8e/0xb0 [ 886.164730] [<ffffffff8100fc1d>] do_IRQ+0x5d/0x100 [ 886.164730] [<ffffffff81496832>] common_interrupt+0x72/0x72 fixes: a03bb56e67c357980dae886683733dab5583dc14 ("enic: implement rx_copybreak") Signed-off-by: Govindarajulu Varadarajan <_govind@gmx.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-11-06net/mlx5_core: Fix race on driver loadEli Cohen1-2/+2
When events arrive at driver load, the event handler gets called even before the spinlock and list are initialized. Fix this by moving the initialization before EQs creation. Signed-off-by: Eli Cohen <eli@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-11-06net/mlx5_core: Fix race in create EQEli Cohen1-4/+3
After the EQ is created, it can possibly generate interrupts and the interrupt handler is referencing eq->dev. It is therefore required to set eq->dev before calling request_irq() so if an event is generated before request_irq() returns, we will have a valid eq->dev field. Signed-off-by: Eli Cohen <eli@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-11-06sunvnet: Return from vnet_napi_event() if no packets to readSowmini Varadhan1-3/+2
vnet_event_napi() may be called as part of the NAPI ->poll, to resume reading descriptor rings. When no data is available, descriptor ring state (e.g., rcv_nxt) needs to be reset carefully to stay in lock-step with ldc_read(). In the interest of simplicity, the best way to do this is to return from vnet_event_napi() when there are no more packets to read. The next trip through ldc_rx will correctly set up the dring state. Signed-off-by: Sowmini Varadhan <sowmini.varadhan@oracle.com> Tested-by: David Stevens <david.stevens@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-11-06sunvnet: Fix indentation in maybe_tx_wakeup()Sowmini Varadhan1-1/+1
remove redundant tab. Signed-off-by: Sowmini Varadhan <sowmini.varadhan@oracle.com> Reported-by: Ben Hutchings <ben@decadent.org.uk> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-11-06r8152: remove the definitions of the PIDhayeswang1-7/+3
The PIDs are only used in the id table, so the definitions are unnacessary. Remove them wouldn't have confusion. Signed-off-by: Hayes Wang <hayeswang@realtek.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-11-06r8152: modify rtl_ops_inithayeswang1-51/+28
Replace using VID/PID with using tp->version to initialize the ops. Signed-off-by: Hayes Wang <hayeswang@realtek.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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