- 16 Sep, 2014 2 commits
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WANG Cong authored
This patch fixes the following crash: [ 42.199159] BUG: unable to handle kernel NULL pointer dereference at 0000000000000018 [ 42.200027] IP: [<ffffffff817e3fc4>] tcindex_set_parms+0x45c/0x526 [ 42.200027] PGD d2319067 PUD d4ffe067 PMD 0 [ 42.200027] Oops: 0000 [#1] SMP DEBUG_PAGEALLOC [ 42.200027] CPU: 0 PID: 541 Comm: tc Not tainted 3.17.0-rc4+ #603 [ 42.200027] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 42.200027] task: ffff8800d22d2670 ti: ffff8800ce790000 task.ti: ffff8800ce790000 [ 42.200027] RIP: 0010:[<ffffffff817e3fc4>] [<ffffffff817e3fc4>] tcindex_set_parms+0x45c/0x526 [ 42.200027] RSP: 0018:ffff8800ce793898 EFLAGS: 00010202 [ 42.200027] RAX: 0000000000000001 RBX: ffff8800d1786498 RCX: 0000000000000000 [ 42.200027] RDX: ffffffff82114ec8 RSI: ffffffff82114ec8 RDI: ffffffff82114ec8 [ 42.200027] RBP: ffff8800ce793958 R08: 00000000000080d0 R09: 0000000000000001 [ 42.200027] R10: ffff8800ce7939a0 R11: 0000000000000246 R12: ffff8800d017d238 [ 42.200027] R13: 0000000000000018 R14: ffff8800d017c6a0 R15: ffff8800d1786620 [ 42.200027] FS: 00007f4e24539740(0000) GS:ffff88011a600000(0000) knlGS:0000000000000000 [ 42.200027] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 42.200027] CR2: 0000000000000018 CR3: 00000000cff38000 CR4: 00000000000006f0 [ 42.200027] Stack: [ 42.200027] ffff8800ce0949f0 0000000000000000 0000000200000003 ffff880000000000 [ 42.200027] ffff8800ce7938b8 ffff8800ce7938b8 0000000600000007 0000000000000000 [ 42.200027] ffff8800ce7938d8 ffff8800ce7938d8 0000000600000007 ffff8800ce0949f0 [ 42.200027] Call Trace: [ 42.200027] [<ffffffff817e4169>] tcindex_change+0xdb/0xee [ 42.200027] [<ffffffff817c16ca>] tc_ctl_tfilter+0x44d/0x63f [ 42.200027] [<ffffffff8179d161>] rtnetlink_rcv_msg+0x181/0x194 [ 42.200027] [<ffffffff8179cf9d>] ? rtnl_lock+0x17/0x19 [ 42.200027] [<ffffffff8179cfe0>] ? __rtnl_unlock+0x17/0x17 [ 42.200027] [<ffffffff817ee296>] netlink_rcv_skb+0x49/0x8b [ 43.462494] [<ffffffff8179cfc2>] rtnetlink_rcv+0x23/0x2a [ 43.462494] [<ffffffff817ec8df>] netlink_unicast+0xc7/0x148 [ 43.462494] [<ffffffff817ed413>] netlink_sendmsg+0x5cb/0x63d [ 43.462494] [<ffffffff810ad781>] ? mark_lock+0x2e/0x224 [ 43.462494] [<ffffffff817757b8>] __sock_sendmsg_nosec+0x25/0x27 [ 43.462494] [<ffffffff81778165>] sock_sendmsg+0x57/0x71 [ 43.462494] [<ffffffff81152bbd>] ? might_fault+0x57/0xa4 [ 43.462494] [<ffffffff81152c06>] ? might_fault+0xa0/0xa4 [ 43.462494] [<ffffffff81152bbd>] ? might_fault+0x57/0xa4 [ 43.462494] [<ffffffff817838fd>] ? verify_iovec+0x69/0xb7 [ 43.462494] [<ffffffff817784f8>] ___sys_sendmsg+0x21d/0x2bb [ 43.462494] [<ffffffff81009db3>] ? native_sched_clock+0x35/0x37 [ 43.462494] [<ffffffff8109ab53>] ? sched_clock_local+0x12/0x72 [ 43.462494] [<ffffffff810ad781>] ? mark_lock+0x2e/0x224 [ 43.462494] [<ffffffff8109ada4>] ? sched_clock_cpu+0xa0/0xb9 [ 43.462494] [<ffffffff810aee37>] ? __lock_acquire+0x5fe/0xde4 [ 43.462494] [<ffffffff8119f570>] ? rcu_read_lock_held+0x36/0x38 [ 43.462494] [<ffffffff8119f75a>] ? __fcheck_files.isra.7+0x4b/0x57 [ 43.462494] [<ffffffff8119fbf2>] ? __fget_light+0x30/0x54 [ 43.462494] [<ffffffff81779012>] __sys_sendmsg+0x42/0x60 [ 43.462494] [<ffffffff81779042>] SyS_sendmsg+0x12/0x1c [ 43.462494] [<ffffffff819d24d2>] system_call_fastpath+0x16/0x1b 'p->h' could be NULL while 'cp->h' is always update to date. Fixes: commit 331b7292 ("net: sched: RCU cls_tcindex") Cc: John Fastabend <john.fastabend@gmail.com> Signed-off-by:
Cong Wang <xiyou.wangcong@gmail.com> Acked-By:
John Fastabend <john.r.fastabend@intel.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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WANG Cong authored
Fixes: commit 331b7292 ("net: sched: RCU cls_tcindex") Cc: John Fastabend <john.fastabend@gmail.com> Signed-off-by:
John Fastabend <john.r.fastabend@gmail.com> Signed-off-by:
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- 15 Sep, 2014 20 commits
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Florian Fainelli authored
dsa_of_probe() still used cd->mii_bus instead of cd->host_dev when building with CONFIG_OF=y. Fix this by making the replacement here as well. Fixes: b4d2394d ("dsa: Replace mii_bus with a generic host device") Signed-off-by:
Florian Fainelli <f.fainelli@gmail.com> Signed-off-by:
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WANG Cong authored
Fixes: commit 331b7292 ("net: sched: RCU cls_tcindex") Cc: John Fastabend <john.fastabend@gmail.com> Signed-off-by:
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WANG Cong authored
This patch fixes the following kernel warning: [ 44.805900] [ INFO: suspicious RCU usage. ] [ 44.808946] 3.17.0-rc4+ #610 Not tainted [ 44.811831] ------------------------------- [ 44.814873] net/sched/cls_tcindex.c:84 suspicious rcu_dereference_check() usage! Fixes: commit 331b7292 ("net: sched: RCU cls_tcindex") Cc: John Fastabend <john.fastabend@gmail.com> Signed-off-by:
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WANG Cong authored
Fixes: commit 331b7292 ("net: sched: RCU cls_tcindex") Cc: John Fastabend <john.fastabend@gmail.com> Signed-off-by:
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WANG Cong authored
Fixes: commit 1f947bf1 ("net: sched: rcu'ify cls_bpf") Cc: John Fastabend <john.fastabend@gmail.com> Signed-off-by:
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David S. Miller authored
Alexander Duyck says: ==================== DSA Cleanups This patch series does two things, first it cleans up the tag_protocol and protocol ops being configured seperately. Second it addresses the desire to split DSA away from relying on a MII bus. ==================== Signed-off-by: -
Alexander Duyck authored
This change makes it so that instead of passing and storing a mii_bus we instead pass and store a host_dev. From there we can test to determine the exact type of device, and can verify it is the correct device for our switch. So for example it would be possible to pass a device pointer from a pci_dev and instead of checking for a PHY ID we could check for a vendor and/or device ID. Signed-off-by:
Alexander Duyck <alexander.h.duyck@intel.com> Signed-off-by:
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Alexander Duyck authored
This change addresses several issues. First, it was possible to set tag_protocol without setting the ops pointer. To correct that I have reordered things so that rcv is now populated before we set tag_protocol. Second, it didn't make much sense to keep setting the device ops each time a new slave was registered. So by moving the receive portion out into root switch initialization that issue should be addressed. Third, I wanted to avoid sending tags if the rcv pointer was not registered so I changed the tag check to verify if the rcv function pointer is set on the root tree. If it is then we start sending DSA tagged frames. Finally I split the device ops pointer in the structures into two spots. I placed the rcv function pointer in the root switch since this makes it easiest to access from there, and I placed the xmit function pointer in the slave for the same reason. Signed-off-by:
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David S. Miller authored
Nikolay Aleksandrov says: ==================== bonding: style, comment and assertion changes This is a small and simple patch-set that doesn't introduce (hopefully) any functional changes, but only stylistic and semantic ones. Patch 01 simply uses the already provided __rlb_next_rx_slave function inside rlb_next_rx_slave(), thus removing the duplication of code. Patch 02 changes all comments that I could find to netdev style, removes some outdated ones and fixes a few more small cosmetic issues (new line after declaration, braces around if; else and such) Patch 03 removes one extra ASSERT_RTNL() because we already have it in the parent function and consolidates two other ASSERT_RTNL()s to the function that is exported and supposed to be called with RTNL anyway. ==================== Signed-off-by: -
Nikolay Aleksandrov authored
Consolidate the calls to ASSERT_RTNL() before bond_select_active_slave() inside bond_select_active_slave() itself and remove the ASSERT_RTNL() from bond_hw_addr_swap() as it's not exported and its only caller - bond_change_active_slave() already has an ASSERT_RTNL(). Signed-off-by:
Nikolay Aleksandrov <nikolay@redhat.com> Signed-off-by:
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Nikolay Aleksandrov authored
First adjust a couple of locking comments that were left inaccurate, then adjust comments to use the netdev styling and remove extra new lines where necessary and add a couple of new lines between declarations and code. These are all trivial styling changes, no functional change. Also removed a couple of outdated or obvious comments. This patch is by no means a complete fix of all netdev style violations but it gets the bonding closer. Signed-off-by:
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Nikolay Aleksandrov authored
__rlb_next_rx_slave() is a copy of rlb_next_rx_slave() with the difference that it uses rcu primitives to walk the slave list. We don't need the two functions and can make rlb_next_rx_slave() a wrapper for callers which hold RTNL. So add a comment and ASSERT_RTNL() to make sure what is intended. Signed-off-by:
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David S. Miller authored
Eric Dumazet says: ==================== tcp: no longer keep around headers in input path Looking at tcp_try_coalesce() I was wondering why I did : if (tcp_hdr(from)->fin) return false; The answer would be to allow the aggregation, if we simply OR the FIN and PSH flags eventually present in @from to @to packet. (Note a change is also needed in skb_try_coalesce() to avoid calling skb_put() with 0 len) Then, looking at tcp_recvmsg(), I realized we access tcp_hdr(skb)->syn (and maybe tcp_hdr(skb)->fin) for every packet we process from socket receive queue. We have to understand TCP flags are cold in cpu caches most of the time (assuming TCP timestamps, and that application calls recvmsg() a long time after incoming packet was processed), and bringing a whole cache line only to access one bit is not very nice. It would make sense to use in TCP input path TCP_SKB_CB(skb)->tcp_flags as we do in output path. This saves one cache line miss, and TCP tcp_collapse() can avoid dealing with the headers. ==================== Signed-off-by: -
Eric Dumazet authored
tcp_collapse() wants to shrink skb so that the overhead is minimal. Now we store tcp flags into TCP_SKB_CB(skb)->tcp_flags, we no longer need to keep around full headers. Whole available space is dedicated to the payload. Signed-off-by:
Eric Dumazet <edumazet@google.com> Acked-by:
Neal Cardwell <ncardwell@google.com> Signed-off-by:
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Eric Dumazet authored
We can allow a segment with FIN to be aggregated, if we take care to add tcp flags, and if skb_try_coalesce() takes care of zero sized skbs. Signed-off-by:
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Eric Dumazet authored
Input path of TCP do not currently uses TCP_SKB_CB(skb)->tcp_flags, which is only used in output path. tcp_recvmsg(), looks at tcp_hdr(skb)->syn for every skb found in receive queue, and its unfortunate because this bit is located in a cache line right before the payload. We can simplify TCP by copying tcp flags into TCP_SKB_CB(skb)->tcp_flags. This patch does so, and avoids the cache line miss in tcp_recvmsg() Following patches will - allow a segment with FIN being coalesced in tcp_try_coalesce() - simplify tcp_collapse() by not copying the headers. Signed-off-by:
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Rickard Strandqvist authored
net: ethernet: neterion: vxge: vxge-main.c: Cleaning up missing null-terminate in conjunction with strncpy Replacing strncpy with strlcpy to avoid strings that lacks null terminate. Signed-off-by:
Rickard Strandqvist <rickard_strandqvist@spectrumdigital.se> Signed-off-by:
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Rickard Strandqvist authored
net: ethernet: freescale: fec_main.c: Cleaning up missing null-terminate in conjunction with strncpy Replacing strncpy with strlcpy to avoid strings that lacks null terminate. Signed-off-by:
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Fabian Frederick authored
Use container_of instead of casting first structure member. Compiled but untested. Signed-off-by:
Fabian Frederick <fabf@skynet.be> Signed-off-by:
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Fabian Frederick authored
Use container_of instead of casting first structure member. ARM cross-compiled but untested. Signed-off-by:
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- 13 Sep, 2014 18 commits
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Sasha Levin authored
Commit "net: bpf: make eBPF interpreter images read-only" has changed bpf_prog to be vmalloc()ed but never handled some of the errors paths of the old code. On error within sk_attach_filter (which userspace can easily trigger), we'd kfree() the vmalloc()ed memory, and leak the internal bpf_work_struct. Signed-off-by:
Sasha Levin <sasha.levin@oracle.com> Acked-by:
Daniel Borkmann <dborkman@redhat.com> Acked-by:
Hannes Frederic Sowa <hannes@stressinduktion.org> Signed-off-by:
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Alexander Duyck authored
This change corrects an error seen when DSA tagging is built as a module. Without this change it is not possible to get XDSA tagged frames as the test for tagging is stripped by the #ifdef check. Signed-off-by:
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Bo Shen authored
Print the IP revision when probing. Signed-off-by:
Bo Shen <voice.shen@atmel.com> Signed-off-by:
Nicolas Ferre <nicolas.ferre@atmel.com> Signed-off-by:
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David S. Miller authored
Frank Li says: ==================== net: fec: imx6sx multiqueue support These patches enable i.MX6SX multi queue support. i.MX6SX support 3 queue and AVB feature. Change from v3 to v4 - use "unsigned int" instead of "unsigned" Change from v2 to v3 - fixed alignment requirement for ARM and NO-ARM platform Change from v1 to v2. - Change num_tx_queue to unsigned int - Avoid block non-dt platform - remove call netif_set_real_num_rx_queues - seperate multi queue patch two part, one is tx and rx handle, with fixed queue 0 then other one is initilized multiqueue - use two difference alignment for tx and rx path ==================== Signed-off-by: -
Frank Li authored
Enable 3 queues suppport for ethernet Signed-off-by:
Frank Li <Frank.Li@freescale.com> Signed-off-by:
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Frank Li authored
This patch update fec devicetree binding doc that add Optional properties "fsl,num-tx-queues" and "fsl,num-rx-queues". Signed-off-by:Fugang Duan <B38611@freescale.com> Signed-off-by:
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Fugang Duan authored
Software clear the MDIO interrupt before MDIO bus access, but MAC still generate MDIO interrupt. The issue only happen on imx6slx chip. CPU: 0 PID: 1 Comm: swapper/0 Not tainted 3.17.0-rc1-00399-g0bcad17 #315 Backtrace: [<800121fc>] (dump_backtrace) from [<800124e0>] (show_stack+0x18/0x1c) r6:8096e534 r5:8096e534 r4:00000000 r3:00000000 [<800124c8>] (show_stack) from [<806a4c60>] (dump_stack+0x8c/0xa4) [<806a4bd4>] (dump_stack) from [<80060ab8>] (__lock_acquire+0x1814/0x1c40) r6:be078000 r5:be074000 r4:be03f6e4 r3:be078000 [<8005f2a4>] (__lock_acquire) from [<800616e0>] (lock_acquire+0x70/0x84) r10:809ada33 r9:be010600 r8:00000096 r7:00000001 r6:be074000 r5:00000000 r4:60000193 [<80061670>] (lock_acquire) from [<806abb20>] (_raw_spin_lock_irqsave+0x40/0x54) r7:00000000 r6:8005a3f8 r5:00000193 r4:be03f6d4 [<806abae0>] (_raw_spin_lock_irqsave) from [<8005a3f8>] (complete+0x1c/0x4c) r6:80950904 r5:be03f6d0 r4:be03f6d4 [<8005a3dc>] (complete) from [<8041b4c0>] (fec_enet_interrupt+0x128/0x164) r6:80950904 r5:00800000 r4:be03f000 r3:00000000 [<8041b398>] (fec_enet_interrupt) from [<8006aeac>] (handle_irq_event_percpu+0x38/0x13c) r6:00000000 r5:be01065c r4:be399e00 r3:8041b398 [<8006ae74>] (handle_irq_event_percpu) from [<8006aff4>] (handle_irq_event+0x44/0x64) r10:be03f000 r9:80989fe0 r8:00000000 r7:00000096 r6:be399e00 r5:be01065c r4:be010600 [<8006afb0>] (handle_irq_event) from [<8006e3e8>] (handle_fasteoi_irq+0xc8/0x1bc) r6:8096e764 r5:be01065c r4:be010600 r3:00000000 [<8006e320>] (handle_fasteoi_irq) from [<8006a63c>] (generic_handle_irq+0x30/0x44) r6:be074010 r5:80945e4c r4:00000096 r3:8006e320 [<8006a60c>] (generic_handle_irq) from [<8000f218>] (handle_IRQ+0x54/0xbc) r4:80950d74 r3:00000180 [<8000f1c4>] (handle_IRQ) from [<800086cc>] (gic_handle_irq+0x30/0x68) r8:be3ab478 r7:c080e100 r6:be075bd8 r5:80950eec r4:c080e10c r3:000000a0 [<8000869c>] (gic_handle_irq) from [<80013064>] (__irq_svc+0x44/0x5c) Signed-off-by:
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Fugang Duan authored
i.MX6 SX change FEC alignment requirement. i.MX6 SX change internal bus from AHB to AXI. It require RX buffer must be 64 bytes alignment. And remove TX buffer alignment requirement. Signed-off-by:
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Fugang Duan authored
Add compatible string "fsl,imx6sx-fec" for i.MX6SX. Signed-off-by:
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Frank Li authored
i.MX6SX Enet-AVB support 3 tx queues, 3 rx queues. For tx queues: ring 0 -> best effort ring 1 -> Class A ring 2 -> Class B For rx queues: ring 0 -> best effort ring 1 -> receive VLAN packet with classification match ring 2 -> receive VLAN packet with classification match Add enet-avb IP multiqueue support for the driver. Signed-off-by:
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Fugang Duan authored
For i.MX6SX enet use AXI bus, reset MAC will make system bus dead if ENET-AXI bus has pending access (AHB bus should not have such issue). So, disable enet with AVB MAC instead of reset MAC itself. Signed-off-by:
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Frank Li authored
initilized all queues according to queue number get from DT file. Signed-off-by:
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Fugang Duan authored
By default, the tx/rx queue number is 1, user can config the queue number at DTS file like this: fsl,num-tx-queues=<3>; fsl,num-rx-queues=<3> Since i.MX6SX enet-AVB IP support multi queues, so use multi queues interface to allocate and set up an Ethernet device. Signed-off-by:
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Fugang Duan authored
This patch just change data structure to support multi-queue. Only 1 queue enabled. Ethernet multiqueue mechanism can improve performance in SMP system. For single hw queue, multiqueue can balance cpu loading. For multi hw queues, multiple cores can process network packets in parallel, and refer the article for the detail advantage for multiqueue: http://vger.kernel.org/~davem/davem_nyc09.pdfSigned-off-by:
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Fugang Duan authored
Add enet AVB feature macro define for imx6sx. Signed-off-by:
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Fugang Duan authored
i.MX6sx enet has below clocks for user config: clk_ipg: ipg_clk_s, ipg_clk_mac0_s, 66Mhz clk_ahb: enet system clock, it is enet AXI clock for imx6sx. For imx6sx, it alos is the clock source of interrupt coalescing. The clock range: 200Mhz ~ 266Mhz. clk_ref: refrence clock for tx and rx. For imx6sx enet RGMII mode, the refrence clock is 125Mhz coming from internal PLL or external. In i.MX6sx-arm2 board, the clock is from internal PLL. clk_ref is optional, depends on board. clk_enet_out: The clock can be output from internal PLL. It can supply 50Mhz clock for phy. clk_enet_out is optional, depends on chip and board. clk_ptp: 1588 ts clock. It is optional, depends on chip. The patch add clk_ref to distiguish the different clocks. Signed-off-by:
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Andrew Lunn authored
This is the Marvell driver with some cleanups by Claudio Leite and myself. Signed-off-by:
Andrew Lunn <andrew@lunn.ch> Cc: Claudio Leite <leitec@staticky.com> Signed-off-by:
Claudio Leite <leitec@staticky.com> Signed-off-by:
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David S. Miller authored
Sathya Perla says: ==================== be2net: patch set Patch 1 fixes some minor issues with log messages in be2net. Patch 2 replaces strcpy() calls with strlcpy() to avoid possible buffer overflow. Patch 3 improves the RX buffer posting scheme for jumbo frames. Patch 4 replaces the use of v0 of SET_FLOW_CONTROL cmd with v1 to receive a definitive completion status from FW. Patch 5 adds support for ethtool "-m" ethtool option. Patch 6 fixes port-type reporting via ethtool get_settings for QSFP/SFP+ interfaces. Patch 7 fixes the usage of MODIFY_EQD FW cmd to target a max of 8 EQs on Lancer chip. Patch 8 enables PCIe error reporting even for VFs. Pls consider applying this patch set to net-next. Thanks. ==================== Signed-off-by:
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