- 28 Oct, 2015 5 commits
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Neil Horman authored
Forcedeth currently uses disable_irq_lockdep and enable_irq_lockdep, which in some configurations simply calls local_irq_disable. This causes errant warnings in the netpoll path as in netpoll_send_skb_on_dev, where we disable irqs using local_irq_save, leading to the following warning: WARNING: at net/core/netpoll.c:352 netpoll_send_skb_on_dev+0x243/0x250() (Not tainted) Hardware name: netpoll_send_skb_on_dev(): eth0 enabled interrupts in poll (nv_start_xmit_optimized+0x0/0x860 [forcedeth]) Modules linked in: netconsole(+) configfs ipv6 iptable_filter ip_tables ppdev parport_pc parport sg microcode serio_raw edac_core edac_mce_amd k8temp snd_hda_codec_realtek snd_hda_codec_generic forcedeth snd_hda_intel snd_hda_codec snd_hwdep snd_seq snd_seq_device snd_pcm snd_timer snd soundcore snd_page_alloc i2c_nforce2 i2c_core shpchp ext4 jbd2 mbcache sr_mod cdrom sd_mod crc_t10dif pata_amd ata_generic pata_acpi sata_nv dm_mirror dm_region_hash dm_log dm_mod [last unloaded: scsi_wait_scan] Pid: 1940, comm: modprobe Not tainted 2.6.32-573.7.1.el6.x86_64.debug #1 Call Trace: [<ffffffff8107bbc1>] ? warn_slowpath_common+0x91/0xe0 [<ffffffff8107bcc6>] ? warn_slowpath_fmt+0x46/0x60 [<ffffffffa00fe5b0>] ? nv_start_xmit_optimized+0x0/0x860 [forcedeth] [<ffffffff814b3593>] ? netpoll_send_skb_on_dev+0x243/0x250 [<ffffffff814b37c9>] ? netpoll_send_udp+0x229/0x270 [<ffffffffa02e3299>] ? write_msg+0x39/0x110 [netconsole] [<ffffffffa02e331b>] ? write_msg+0xbb/0x110 [netconsole] [<ffffffff8107bd55>] ? __call_console_drivers+0x75/0x90 [<ffffffff8107bdba>] ? _call_console_drivers+0x4a/0x80 [<ffffffff8107c445>] ? release_console_sem+0xe5/0x250 [<ffffffff8107d200>] ? register_console+0x190/0x3e0 [<ffffffffa02e71a6>] ? init_netconsole+0x1a6/0x216 [netconsole] [<ffffffffa02e7000>] ? init_netconsole+0x0/0x216 [netconsole] [<ffffffff810020d0>] ? do_one_initcall+0xc0/0x280 [<ffffffff810d4933>] ? sys_init_module+0xe3/0x260 [<ffffffff8100b0d2>] ? system_call_fastpath+0x16/0x1b ---[ end trace f349c7af88e6a6d5 ]--- console [netcon0] enabled netconsole: network logging started Fix it by modifying the forcedeth code to use disable_irq_nosync_lockdep_irqsavedisable_irq_nosync_lockdep_irqsave instead, which saves and restores irq state properly. This also saves us a little code in the process Tested by the reporter, with successful restuls Patch applies to the head of the net tree Signed-off-by:
Neil Horman <nhorman@tuxdriver.com> CC: "David S. Miller" <davem@davemloft.net> Reported-by:
Vasily Averin <vvs@sw.ru> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Joe Stringer authored
nf_ct_frag6_gather() makes a clone of each skb passed to it, and if the reassembly is successful, expects the caller to free all of the original skbs using nf_ct_frag6_consume_orig(). This call was previously missing, meaning that the original fragments were never freed (with the exception of the last fragment to arrive). Fix this by ensuring that all original fragments except for the last fragment are freed via nf_ct_frag6_consume_orig(). The last fragment will be morphed into the head, so it must not be freed yet. Furthermore, retain the ->next pointer for the head after skb_morph(). Fixes: 7f8a436e ("openvswitch: Add conntrack action") Reported-by:
Florian Westphal <fw@strlen.de> Signed-off-by:
Joe Stringer <joestringer@nicira.com> Acked-by:
Pravin B Shelar <pshelar@nicira.com> Signed-off-by:
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Joe Stringer authored
This is needed in openvswitch to fix an skb leak in the next patch. Signed-off-by:
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Joe Stringer authored
If ip_defrag() returns an error other than -EINPROGRESS, then the skb is freed. When handle_fragments() passes this back up to do_execute_actions(), it will be freed again. Prevent this double free by never freeing the skb in do_execute_actions() for errors returned by ovs_ct_execute. Always free it in ovs_ct_execute() error paths instead. Fixes: 7f8a436e ("openvswitch: Add conntrack action") Reported-by:
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Alexander Duyck authored
We were computing the child index in cases where the key value we were looking for was actually less than the base key of the tnode. As a result we were getting incorrect index values that would cause us to skip over some children. To fix this I have added a test that will force us to use child index 0 if the key we are looking for is less than the key of the current tnode. Fixes: 8be33e95 ("fib_trie: Fib walk rcu should take a tnode and key instead of a trie and a leaf") Reported-by:
Brian Rak <brak@gameservers.com> Signed-off-by:
Alexander Duyck <aduyck@mirantis.com> Signed-off-by:
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- 27 Oct, 2015 11 commits
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David S. Miller authored
Julia Lawall says: ==================== add missing of_node_put The various for_each device_node iterators performs an of_node_get on each iteration, so a break out of the loop requires an of_node_put. The complete semantic patch that fixes this problem is (http://coccinelle.lip6.fr): // <smpl> @r@ local idexpression n; expression e1,e2; iterator name for_each_node_by_name, for_each_node_by_type, for_each_compatible_node, for_each_matching_node, for_each_matching_node_and_match, for_each_child_of_node, for_each_available_child_of_node, for_each_node_with_property; iterator i; statement S; expression list [n1] es; @@ ( ( for_each_node_by_name(n,e1) S | for_each_node_by_type(n,e1) S | for_each_compatible_node(n,e1,e2) S | for_each_matching_node(n,e1) S | for_each_matching_node_and_match(n,e1,e2) S | for_each_child_of_node(e1,n) S | for_each_available_child_of_node(e1,n) S | for_each_node_with_property(n,e1) S ) & i(es,n,...) S ) @@ local idexpression r.n; iterator r.i; expression e; expression list [r.n1] es; @@ i(es,n,...) { ... ( of_node_put(n); | e = n | return n; | + of_node_put(n); ? return ...; ) ... } @@ local idexpression r.n; iterator r.i; expression e; expression list [r.n1] es; @@ i(es,n,...) { ... ( of_node_put(n); | e = n | + of_node_put(n); ? break; ) ... } ... when != n @@ local idexpression r.n; iterator r.i; expression e; identifier l; expression list [r.n1] es; @@ i(es,n,...) { ... ( of_node_put(n); | e = n | + of_node_put(n); ? goto l; ) ... } ... l: ... when != n// </smpl> ==================== Signed-off-by:
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Julia Lawall authored
for_each_available_child_of_node performs an of_node_get on each iteration, so a break out of the loop requires an of_node_put. A simplified version of the semantic patch that fixes this problem is as follows (http://coccinelle.lip6.fr): // <smpl> @@ expression root,e; local idexpression child; @@ for_each_available_child_of_node(root, child) { ... when != of_node_put(child) when != e = child ( return child; | + of_node_put(child); ? return ...; ) ... } // </smpl> Signed-off-by:
Julia Lawall <Julia.Lawall@lip6.fr> Signed-off-by:
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Julia Lawall authored
for_each_compatible_node performs an of_node_get on each iteration, so a break out of the loop requires an of_node_put. A simplified version of the semantic patch that fixes this problem is as follows (http://coccinelle.lip6.fr): // <smpl> @@ expression e; local idexpression n; @@ for_each_compatible_node(n,...) { ... when != of_node_put(n) when != e = n ( return n; | + of_node_put(n); ? return ...; ) ... } // </smpl> Signed-off-by:
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Julia Lawall authored
for_each_available_child_of_node performs an of_node_get on each iteration, so a break out of the loop requires an of_node_put. A simplified version of the semantic patch that fixes this problem is as follows (http://coccinelle.lip6.fr): // <smpl> @@ expression root,e; local idexpression child; @@ for_each_available_child_of_node(root, child) { ... when != of_node_put(child) when != e = child ( return child; | + of_node_put(child); ? return ...; ) ... } // </smpl> Signed-off-by:
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Julia Lawall authored
for_each_available_child_of_node performs an of_node_get on each iteration, so a break out of the loop requires an of_node_put. A simplified version of the semantic patch that fixes this problem is as follows (http://coccinelle.lip6.fr): // <smpl> @@ local idexpression r.n; expression r,e; @@ for_each_available_child_of_node(r,n) { ... ( of_node_put(n); | e = n | + of_node_put(n); ? break; ) ... } ... when != n // </smpl> Signed-off-by:
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Julia Lawall authored
for_each_child_of_node performs an of_node_get on each iteration, so a break out of the loop requires an of_node_put. A simplified version of the semantic patch that fixes this problem is as follows (http://coccinelle.lip6.fr): // <smpl> @@ local idexpression r.n; expression r,e; @@ for_each_child_of_node(r,n) { ... ( of_node_put(n); | e = n | + of_node_put(n); ? break; ) ... } ... when != n // </smpl> Signed-off-by:
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Julia Lawall authored
for_each_child_of_node performs an of_node_get on each iteration, so a break out of the loop requires an of_node_put. A simplified version of the semantic patch that fixes this problem is as follows (http://coccinelle.lip6.fr): // <smpl> @@ local idexpression r.n; expression r,e; @@ for_each_child_of_node(r,n) { ... ( of_node_put(n); | e = n | + of_node_put(n); ? break; ) ... } ... when != n // </smpl> Signed-off-by:
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Eric Dumazet authored
gre_gso_segment() chokes if SIT frames were aggregated by GRO engine. Fixes: 61c1db7f ("ipv6: sit: add GSO/TSO support") Signed-off-by:
Eric Dumazet <edumazet@google.com> Signed-off-by:
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David S. Miller authored
Sergei Shtylyov says: ==================== sh_eth: RX buffer alignment fixes Here's a set of 2 patches against DaveM's 'net.git' repo which are the fixes to the RX buffer size calculation. [1/2] sh_eth: fix RX buffer size alignment [2/2] sh_eth: fix RX buffer size calculation ==================== Signed-off-by: -
Sergei Shtylyov authored
The RX buffer size calulation failed to account for the length granularity (which is now 32 bytes)... Signed-off-by:
Sergei Shtylyov <sergei.shtylyov@cogentembedded.com> Signed-off-by:
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Sergei Shtylyov authored
Both Renesas R-Car and RZ/A1 manuals state that RX buffer length must be a multiple of 32 bytes, while the driver only uses 16 byte granularity... Signed-off-by:
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- 26 Oct, 2015 10 commits
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David S. Miller authored
Claudiu Manoil says: ==================== gianfar: Misc. fixes and updates Various fixes for some older issues, including having a MAINTAINERS entry for this driver. I'd recommend applying them on top of net, thanks. ==================== Signed-off-by: -
Claudiu Manoil authored
Signed-off-by:
Claudiu Manoil <claudiu.manoil@freescale.com> Signed-off-by:
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Claudiu Manoil authored
The Rx BSY error interrupt indicates that a frame was received and discarded due to lack of buffers, so it's a rx ring overflow condition and has nothing to do with with bad rx packets. Use the right counter. BSY conditions happen when the SoC is under performance stress. Doing *more* work in stress situations by trying to schedule NAPI is not a good idea as the stressed system becomes still more stressed. The Rx interrupt is already at work making sure the NAPI is scheduled. So calling gfar_receive() here does not help. This issue was present since day 1. Signed-off-by:
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Claudiu Manoil authored
Under one unusual circumstance it's possible to wrongly set FILREN without enabling PRSDEP as well in the RCTRL register, against the hardware specifications. With the default config this does not happen because the default Rx offloads (Rx csum and Rx VLAN) properly enable PRSDEP. But if anyone disables all these offloads (via ethtool), we get a wrong configuration were the Rx flow classification and hashing, and other Filer based features (e.g. wake-on-filer interrupt) won't work. This patch fixes the issue. Also, account for Rx FCB insertion which happens every time PRSDEP is set. Signed-off-by:
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Claudiu Manoil authored
RQFCR_AND is duplicated. Add missing space as well. Signed-off-by:
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David S. Miller authored
David Daney says: ==================== net: thunderx: Support pass-2 revision hardware. With the availability of a new revision of the ThunderX NIC hardware a few changes to the driver are required. With these, the driver works on all currently available hardware revisions. ==================== Signed-off-by: -
Thanneeru Srinivasulu authored
Add support for ThunderX pass2 CPI and MPI configuration changes. MPI_ALG is not enabled i.e MCAM parsing is disabled. Signed-off-by:
Thanneeru Srinivasulu <tsrinivasulu@caviumnetworks.com> Signed-off-by:
Sunil Goutham <sgoutham@cavium.com> Signed-off-by:
David Daney <david.daney@cavium.com> Signed-off-by:
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David Daney authored
The test for pass-1 silicon was incorrect, it should be for all revisions less than 8. Also the revision is already present in the pci_dev, so there is no need to read and keep a private copy. Remove rev_id and code to read it from struct nicpf. Create new static inline function pass1_silicon() to be used to testing the silicon version. Use pass1_silicon() for revision checks, this will be more widely used in follow on patches. Signed-off-by:
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Sunil Goutham authored
Signed-off-by:
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Sunil Goutham authored
In some silicon revisions, the soft reset clobbers PCI config space, so quit doing the reset. Signed-off-by:
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- 23 Oct, 2015 14 commits
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Li RongQing authored
the returned buffer of register_sysctl() is stored into net_header variable, but net_header is not used after, and compiler maybe optimise the variable out, and lead kmemleak reported the below warning comm "swapper/0", pid 1, jiffies 4294937448 (age 267.270s) hex dump (first 32 bytes): 90 38 8b 01 c0 ff ff ff 00 00 00 00 01 00 00 00 .8.............. 01 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ backtrace: [<ffffffc00020f134>] create_object+0x10c/0x2a0 [<ffffffc00070ff44>] kmemleak_alloc+0x54/0xa0 [<ffffffc0001fe378>] __kmalloc+0x1f8/0x4f8 [<ffffffc00028e984>] __register_sysctl_table+0x64/0x5a0 [<ffffffc00028eef0>] register_sysctl+0x30/0x40 [<ffffffc00099c304>] net_sysctl_init+0x20/0x58 [<ffffffc000994dd8>] sock_init+0x10/0xb0 [<ffffffc0000842e0>] do_one_initcall+0x90/0x1b8 [<ffffffc000966bac>] kernel_init_freeable+0x218/0x2f0 [<ffffffc00070ed6c>] kernel_init+0x1c/0xe8 [<ffffffc000083bfc>] ret_from_fork+0xc/0x50 [<ffffffffffffffff>] 0xffffffffffffffff <<end check kmemleak>> Before fix, the objdump result on ARM64: 0000000000000000 <net_sysctl_init>: 0: a9be7bfd stp x29, x30, [sp,#-32]! 4: 90000001 adrp x1, 0 <net_sysctl_init> 8: 90000000 adrp x0, 0 <net_sysctl_init> c: 910003fd mov x29, sp 10: 91000021 add x1, x1, #0x0 14: 91000000 add x0, x0, #0x0 18: a90153f3 stp x19, x20, [sp,#16] 1c: 12800174 mov w20, #0xfffffff4 // #-12 20: 94000000 bl 0 <register_sysctl> 24: b4000120 cbz x0, 48 <net_sysctl_init+0x48> 28: 90000013 adrp x19, 0 <net_sysctl_init> 2c: 91000273 add x19, x19, #0x0 30: 9101a260 add x0, x19, #0x68 34: 94000000 bl 0 <register_pernet_subsys> 38: 2a0003f4 mov w20, w0 3c: 35000060 cbnz w0, 48 <net_sysctl_init+0x48> 40: aa1303e0 mov x0, x19 44: 94000000 bl 0 <register_sysctl_root> 48: 2a1403e0 mov w0, w20 4c: a94153f3 ldp x19, x20, [sp,#16] 50: a8c27bfd ldp x29, x30, [sp],#32 54: d65f03c0 ret After: 0000000000000000 <net_sysctl_init>: 0: a9bd7bfd stp x29, x30, [sp,#-48]! 4: 90000000 adrp x0, 0 <net_sysctl_init> 8: 910003fd mov x29, sp c: a90153f3 stp x19, x20, [sp,#16] 10: 90000013 adrp x19, 0 <net_sysctl_init> 14: 91000000 add x0, x0, #0x0 18: 91000273 add x19, x19, #0x0 1c: f90013f5 str x21, [sp,#32] 20: aa1303e1 mov x1, x19 24: 12800175 mov w21, #0xfffffff4 // #-12 28: 94000000 bl 0 <register_sysctl> 2c: f9002260 str x0, [x19,#64] 30: b40001a0 cbz x0, 64 <net_sysctl_init+0x64> 34: 90000014 adrp x20, 0 <net_sysctl_init> 38: 91000294 add x20, x20, #0x0 3c: 9101a280 add x0, x20, #0x68 40: 94000000 bl 0 <register_pernet_subsys> 44: 2a0003f5 mov w21, w0 48: 35000080 cbnz w0, 58 <net_sysctl_init+0x58> 4c: aa1403e0 mov x0, x20 50: 94000000 bl 0 <register_sysctl_root> 54: 14000004 b 64 <net_sysctl_init+0x64> 58: f9402260 ldr x0, [x19,#64] 5c: 94000000 bl 0 <unregister_sysctl_table> 60: f900227f str xzr, [x19,#64] 64: 2a1503e0 mov w0, w21 68: f94013f5 ldr x21, [sp,#32] 6c: a94153f3 ldp x19, x20, [sp,#16] 70: a8c37bfd ldp x29, x30, [sp],#48 74: d65f03c0 ret Add the possible error handle to free the net_header to remove the kmemleak warning Signed-off-by:
Li RongQing <roy.qing.li@gmail.com> Signed-off-by:
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Guillaume Nault authored
We can't rely on PPPOX_ZOMBIE to decide whether to clear po->pppoe_dev. PPPOX_ZOMBIE can be set by pppoe_disc_rcv() even when po->pppoe_dev is NULL. So we have no guarantee that (sk->sk_state & PPPOX_ZOMBIE) implies (po->pppoe_dev != NULL). Since we're releasing a PPPoE socket, we want to release the pppoe_dev if it exists and reset sk_state to PPPOX_DEAD, no matter the previous value of sk_state. So we can just check for po->pppoe_dev and avoid any assumption on sk->sk_state. Fixes: 2b018d57 ("pppoe: drop PPPOX_ZOMBIEs in pppoe_release") Signed-off-by:
Guillaume Nault <g.nault@alphalink.fr> Signed-off-by:
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Li RongQing authored
Signed-off-by:
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Lendacky, Thomas authored
The code currently uses the lightweight dma_wmb barrier before updating the current descriptor count. Under heavy load, the Tx cleanup routine was seeing the updated current descriptor count before the updated descriptor information. As a result, the Tx descriptor was being cleaned up before it was used because it was not "owned" by the hardware yet, resulting in a Tx queue hang. Using the wmb barrier insures that the descriptor is updated before the descriptor counter preventing the Tx queue hang. For extra insurance, the Tx cleanup routine is changed to grab the current decriptor count on entry and uses that initial value in the processing loop rather than trying to chase the current value. Signed-off-by:
Tom Lendacky <thomas.lendacky@amd.com> Tested-by:
Christoffer Dall <christoffer.dall@linaro.org> Signed-off-by:
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Nathan Sullivan authored
Very rarely, the KSZ9031 will appear to complete autonegotiation, but will drop all traffic afterwards. When this happens, the idle error count will read 0xFF after autonegotiation completes. Reset the PHY when in that state. Signed-off-by:
Nathan Sullivan <nathan.sullivan@ni.com> Signed-off-by:
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David S. Miller authored
Hannes Frederic Sowa says: ==================== overflow-arith: begin to add support for overflow builtins functions I add a new header, linux/overflow-arith.h, as the central place to add overflow and wrap-around checking functions. The reason I am doing so is that it can make use of compiler supported builtin functions which can leverage hardware. As I need this for a fix in the ipv6 stack, which is also included in this series, I propose to add it sooner than later over Davem's net tree. This is also the reason why I start slowly with only the one function I need at this time. ==================== Signed-off-by: -
Hannes Frederic Sowa authored
Raw sockets with hdrincl enabled can insert ipv6 extension headers right into the data stream. In case we need to fragment those packets, we reparse the options header to find the place where we can insert the fragment header. If the extension headers exceed the link's MTU we actually cannot make progress in such a case. Instead of ending up in broken arithmetic or rounding towards 0 and entering an endless loop in ip6_fragment, just prevent those cases by aborting early and signal -EMSGSIZE to user space. Reported-by:
Dmitry Vyukov <dvyukov@google.com> Cc: Dmitry Vyukov <dvyukov@google.com> Signed-off-by:
Hannes Frederic Sowa <hannes@stressinduktion.org> Signed-off-by:
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Hannes Frederic Sowa authored
The idea of the overflow-arith.h header is to collect overflow checking functions in one central place. If gcc compiler supports the __builtin_overflow_* builtins we use them because they might give better performance, otherwise the code falls back to normal overflow checking functions. The builtin_overflow functions are supported by gcc-5 and clang. The matter of supporting clang is to just provide a corresponding CC_HAVE_BUILTIN_OVERFLOW, because the specific overflow checking builtins don't differ between gcc and clang. I just provide overflow_usub function here as I intend this to get merged into net, more functions will definitely follow as they are needed. Signed-off-by:
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Andrew Shewmaker authored
If alpha is strictly reduced by alpha >> dctcp_shift_g and if alpha is less than 1 << dctcp_shift_g, then alpha may never reach zero. For example, given shift_g=4 and alpha=15, alpha >> dctcp_shift_g yields 0 and alpha remains 15. The effect isn't noticeable in this case below cwnd=137, but could gradually drive uncongested flows with leftover alpha down to cwnd=137. A larger dctcp_shift_g would have a greater effect. This change causes alpha=15 to drop to 0 instead of being decrementing by 1 as it would when alpha=16. However, it requires one less conditional to implement since it doesn't have to guard against subtracting 1 from 0U. A decay of 15 is not unreasonable since an equal or greater amount occurs at alpha >= 240. Signed-off-by:
Andrew G. Shewmaker <agshew@gmail.com> Acked-by:
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lucien authored
The error condition -EAGAIN, which is signaled by throw routes, tells the rules framework to walk on searching for next matches. If the walk ends and we stop walking the rules with the result of a throw route we have to translate the error conditions to -ENETUNREACH. Signed-off-by:
Xin Long <lucien.xin@gmail.com> Signed-off-by:
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Jason Wang authored
We don't have fraglist support in TAP_FEATURES. This will lead software segmentation of gro skb with frag list. Fixes by having frag list support in TAP_FEATURES. With this patch single session of netperf receiving were restored from about 5Gb/s to about 12Gb/s on mlx4. Fixes a567dd62 ("macvtap: simplify usage of tap_features") Cc: Vlad Yasevich <vyasevic@redhat.com> Cc: Michael S. Tsirkin <mst@redhat.com> Signed-off-by:
Jason Wang <jasowang@redhat.com> Signed-off-by:
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Pravin B Shelar authored
While transitioning to netdev based vport we broke OVS feature which allows user to retrieve tunnel packet egress information for lwtunnel devices. Following patch fixes it by introducing ndo operation to get the tunnel egress info. Same ndo operation can be used for lwtunnel devices and compat ovs-tnl-vport devices. So after adding such device operation we can remove similar operation from ovs-vport. Fixes: 614732ea ("openvswitch: Use regular VXLAN net_device device"). Signed-off-by:
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git://git.kernel.org/pub/scm/linux/kernel/git/jkirsher/net-queueDavid S. Miller authored
Jeff Kirsher says: ==================== Intel Wired LAN Driver Updates 2015-10-22 This series contains fixes to i40e only. Jesse provides two small fixes for i40e, first fixes counters that were being displayed incorrectly due to indexing beyond the array of strings when printing stats. Then fixed the fact that the driver was printing a message about not being able to assign VMDq because a lack of MSI-X vectors, when it was not true. It was due to a line missing that initialized a variable. ==================== Signed-off-by: -
Jorgen Hansen authored
The recent fix for the vsock sock_put issue used the wrong initializer for the transport spin_lock causing an issue when running with lockdep checking. Testing: Verified fix on kernel with lockdep enabled. Reviewed-by:
Thomas Hellstrom <thellstrom@vmware.com> Signed-off-by:
Jorgen Hansen <jhansen@vmware.com> Signed-off-by:
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