- 31 Aug, 2015 5 commits
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Aleksey Makarov authored
The liquidio and thunder drivers have different maintainers. Signed-off-by:
Aleksey Makarov <aleksey.makarov@caviumnetworks.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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David S. Miller authored
Raghavendra K T says: ==================== Optimize the snmp stat aggregation for large cpus While creating 1000 containers, perf is showing lot of time spent in snmp_fold_field on a large cpu system. The current patch tries to improve by reordering the statistics gathering. Please note that similar overhead was also reported while creating veth pairs https://lkml.org/lkml/2013/3/19/556 Changes in V4: - remove 'item' variable and use IPSTATS_MIB_MAX to avoid sparse warning (Eric) also remove 'item' parameter (Joe) - add missing memset of padding. Changes in V3: - use memset to initialize temp buffer in leaf function. (David) - use memcpy to copy the buffer data to stat instead of unalign_pu (Joe) - Move buffer definition to leaf function __snmp6_fill_stats64() (Eric) - Changes in V2: - Allocate the stat calculation buffer in stack. (Eric) Setup: 160 cpu (20 core) baremetal powerpc system with 1TB memory 1000 docker containers was created with command docker run -itd ubuntu:15.04 /bin/bash in loop observation: Docker container creation linearly increased from around 1.6 sec to 7.5 sec (at 1000 containers) perf data showed, creating veth interfaces resulting in the below code path was taking more time. rtnl_fill_ifinfo -> inet6_fill_link_af -> inet6_fill_ifla6_attrs -> snmp_fold_field proposed idea: currently __snmp6_fill_stats64 calls snmp_fold_field that walks through per cpu data to of an item (iteratively for around 36 items). The patch tries to aggregate the statistics by going through all the items of each cpu sequentially which is reducing cache misses. Performance of docker creation improved by around more than 2x after the patch. before the patch: ================ 3f45ba571a42e925c4ec4aaee0e48d7610a9ed82a4c931f83324d41822cf6617 real 0m6.836s user 0m0.095s sys 0m0.011s perf record -a docker run -itd ubuntu:15.04 /bin/bash ======================================================= 50.73% docker [kernel.kallsyms] [k] snmp_fold_field 9.07% swapper [kernel.kallsyms] [k] snooze_loop 3.49% docker [kernel.kallsyms] [k] veth_stats_one 2.85% swapper [kernel.kallsyms] [k] _raw_spin_lock 1.37% docker docker [.] backtrace_qsort 1.31% docker docker [.] strings.FieldsFunc cache-misses: 2.7% after the patch: ============= 9178273e9df399c8290b6c196e4aef9273be2876225f63b14a60cf97eacfafb5 real 0m3.249s user 0m0.088s sys 0m0.020s perf record -a docker run -itd ubuntu:15.04 /bin/bash ======================================================= 10.57% docker docker [.] scanblock 8.37% swapper [kernel.kallsyms] [k] snooze_loop 6.91% docker [kernel.kallsyms] [k] snmp_get_cpu_field 6.67% docker [kernel.kallsyms] [k] veth_stats_one 3.96% docker docker [.] runtime_MSpan_Sweep 2.47% docker docker [.] strings.FieldsFunc cache-misses: 1.41 % Please let me know if you have suggestions/comments. Thanks Eric, Joe and David for the comments. ==================== Signed-off-by:
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Raghavendra K T authored
Docker container creation linearly increased from around 1.6 sec to 7.5 sec (at 1000 containers) and perf data showed 50% ovehead in snmp_fold_field. reason: currently __snmp6_fill_stats64 calls snmp_fold_field that walks through per cpu data of an item (iteratively for around 36 items). idea: This patch tries to aggregate the statistics by going through all the items of each cpu sequentially which is reducing cache misses. Docker creation got faster by more than 2x after the patch. Result: Before After Docker creation time 6.836s 3.25s cache miss 2.7% 1.41% perf before: 50.73% docker [kernel.kallsyms] [k] snmp_fold_field 9.07% swapper [kernel.kallsyms] [k] snooze_loop 3.49% docker [kernel.kallsyms] [k] veth_stats_one 2.85% swapper [kernel.kallsyms] [k] _raw_spin_lock perf after: 10.57% docker docker [.] scanblock 8.37% swapper [kernel.kallsyms] [k] snooze_loop 6.91% docker [kernel.kallsyms] [k] snmp_get_cpu_field 6.67% docker [kernel.kallsyms] [k] veth_stats_one changes/ideas suggested: Using buffer in stack (Eric), Usage of memset (David), Using memcpy in place of unaligned_put (Joe). Signed-off-by:Raghavendra K T <raghavendra.kt@linux.vnet.ibm.com> Acked-by:
Eric Dumazet <edumazet@google.com> Signed-off-by:
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Raghavendra K T authored
Signed-off-by:
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- 30 Aug, 2015 5 commits
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David S. Miller authored
Pravin B Shelar says: ==================== openvswitch: Cleanup post vport conversion. After converting all vport to netdev implmentations there is no need for some of vport functionality. ==================== Signed-off-by: -
Pravin B Shelar authored
This structure is not used anymore. Signed-off-by:
Pravin B Shelar <pshelar@nicira.com> Signed-off-by:
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Pravin B Shelar authored
Since all vport types are now backed by netdev, we can directly use netdev stats. Following patch removes redundant stat from vport. Signed-off-by:
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Pravin B Shelar authored
tun info is passed using skb-dst pointer. Now we have converted all vports to netdev based implementation so Now we can remove redundant pointer to tun-info from OVS_CB. Signed-off-by:
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Pravin B Shelar authored
Remove unused get_name() function pointer from vport ops. Signed-off-by:
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- 29 Aug, 2015 18 commits
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Jesse Gross authored
Geneve can benefit from GRO at the device level in a manner similar to other tunnels, especially as hardware offloads are still emerging. After this patch, aggregated frames are seen on the tunnel interface. Single stream throughput nearly doubles in ideal circumstances (on old hardware). Signed-off-by:
Jesse Gross <jesse@nicira.com> Signed-off-by:
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Simon Horman authored
When an error occurs skipping IPv6 extension headers retain the already parsed IP protocol and IPv6 addresses in the flow. Also assume that the packet is not a fragment in the absence of information to the contrary; that is always use the frag_off value set by ipv6_skip_exthdr(). This allows matching on the IP protocol and IPv6 addresses of packets with malformed extension headers. Signed-off-by:
Simon Horman <simon.horman@netronome.com> Signed-off-by:
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David S. Miller authored
Merge branch 'for-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth-next Johan Hedberg says: ==================== pull request: bluetooth-next 2015-08-28 One more bunch of Bluetooth patches for 4.3: - Crash fix for hci_bcm driver - Enhancements to hci_intel driver (e.g. baudrate configuration) - Fix for SCO link type after multiple connect attempts - Cleanups & minor fixes in a few other places Please let me know if there are any issues pulling. Thanks. ==================== Signed-off-by:
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Tony Lindgren authored
The interrupt handler may not be available when smsc911x probes if the interrupt handler is a GPIO controller for example. Let's fix that by adding handling for -EPROBE_DEFER. Cc: Steve Glendinning <steve.glendinning@shawell.net> Signed-off-by:
Tony Lindgren <tony@atomide.com> Signed-off-by:
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David S. Miller authored
Jiri Benc says: ==================== tunnels: fix incorrect IPv4/v6 headers interpretation With tunneling, it is currently possible to get an IPv6 header and interpret it as an IPv4 header, or to interpret an IPv6 address as an IPv4 address (and vice versa). This leads to things like sending packets to incorrect address, IPv6 flow label being interpreted as IP packet length, etc. Fix several places where this can happen. Most of this is net-next only. The third patch affects net, too, but it doesn't seem there's anything in user space that sets the attribute at all currently, thus net-next is fine. Changelog: v2: fixed geneve after incorrect rebase on top of Pravin's patches ==================== Signed-off-by: -
Jiri Benc authored
By default (subject to the sysctl settings), IPv6 sockets listen also for IPv4 traffic. Vxlan is not prepared for that and expects IPv6 header in packets received through an IPv6 socket. In addition, it's currently not possible to have both IPv4 and IPv6 vxlan tunnel on the same port (unless bindv6only sysctl is enabled), as it's not possible to create and bind both IPv4 and IPv6 vxlan interfaces and there's no way to specify both IPv4 and IPv6 remote/group IP addresses. Set IPV6_V6ONLY on vxlan sockets to fix both of these issues. This is not done globally in udp_tunnel, as l2tp and tipc seems to work okay when receiving IPv4 packets on IPv6 socket and people may rely on this behavior. The other tunnels (geneve and fou) do not support IPv6. Signed-off-by:
Jiri Benc <jbenc@redhat.com> Signed-off-by:
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Jiri Benc authored
fou does not really support IPv6 encapsulation. After an UDP socket is created in fou_create, the encap_rcv callback is set either to fou_udp_recv or to gue_udp_recv. Both of those unconditionally assume that the received packet has an IPv4 header and access the data at network_header as it was an IPv4 header. This leads to IPv6 flow label being interpreted as IP packet length, etc. Disallow fou tunnel to be configured as IPv6 until real IPv6 support is added to fou. CC: Tom Herbert <tom@herbertland.com> Signed-off-by:
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Jiri Benc authored
There's currently nothing preventing directing packets with IPv6 encapsulation data to IPv4 tunnels (and vice versa). If this happens, IPv6 addresses are incorrectly interpreted as IPv4 ones. Track whether the given ip_tunnel_key contains IPv4 or IPv6 data. Store this in ip_tunnel_info. Reject packets at appropriate places if they are supposed to be encapsulated into an incompatible protocol. Signed-off-by:
Alexei Starovoitov <ast@plumgrid.com> Acked-by:
Thomas Graf <tgraf@suug.ch> Acked-by:
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Jiri Benc authored
The mode field holds a single bit of information only (whether the ip_tunnel_info struct is for rx or tx). Change the mode field to bit flags. This allows more mode flags to be added. Signed-off-by:
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David Ahern authored
A few useful tracepoints developing VRF driver. Signed-off-by:
David Ahern <dsa@cumulusnetworks.com> Signed-off-by:
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Vlad Yasevich authored
When removing an non-primary transport during ASCONF processing, we end up traversing the transport list twice: once in sctp_cmd_del_non_primary, and once in sctp_assoc_del_peer. We can avoid the second search and call sctp_assoc_rm_peer() instead. Found by code inspection during code reviews. Signed-off-by:
Vladislav Yasevich <vyasevich@gmail.com> Signed-off-by:
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Nikolay Aleksandrov authored
The problem is rcu_read_unlock_bh() which triggers a warning when irqs are disabled. ndo_poll_controller should run with irqs disabled always so we can drop the rcu_read_lock_bh. [ 98.502922] bond0: making interface eth1 the new active one [ 98.503039] ------------[ cut here ]------------ [ 98.503039] WARNING: CPU: 0 PID: 1744 at kernel/softirq.c:150 __local_bh_enable_ip+0x96/0xc0() [ 98.503039] Modules linked in: bonding(OE) rpcsec_gss_krb5 nfsv4 dns_resolver nfs fscache netconsole ppdev joydev parport_pc serio_raw parport i2c_piix4 video acpi_cpufreq nfsd auth_rpcgss nfs_acl lockd grace sunrpc virtio_net e1000 ata_generic pcnet32 mii virtio_pci virtio_ring virtio pata_acpi [ 98.503039] CPU: 0 PID: 1744 Comm: ifenslave Tainted: G OE 4.2.0-rc7+ #56 [ 98.503039] Hardware name: innotek GmbH VirtualBox/VirtualBox, BIOS VirtualBox 12/01/2006 [ 98.503039] 0000000000000000 00000000e96ba230 ffff880020c236b8 ffffffff8183f105 [ 98.503039] 0000000000000000 0000000000000000 ffff880020c236f8 ffffffff810a9496 [ 98.503039] ffff88002ea99e08 0000000000000200 ffffffffa02a8e06 ffff88002ea99e08 [ 98.503039] Call Trace: [ 98.503039] [<ffffffff8183f105>] dump_stack+0x4c/0x65 [ 98.503039] [<ffffffff810a9496>] warn_slowpath_common+0x86/0xc0 [ 98.503039] [<ffffffffa02a8e06>] ? bond_poll_controller+0x146/0x250 [bonding] [ 98.503039] [<ffffffff810a95ca>] warn_slowpath_null+0x1a/0x20 [ 98.503039] [<ffffffff810ae376>] __local_bh_enable_ip+0x96/0xc0 [ 98.503039] [<ffffffffa02a8e2f>] bond_poll_controller+0x16f/0x250 [bonding] [ 98.503039] [<ffffffffa02a8cf3>] ? bond_poll_controller+0x33/0x250 [bonding] [ 98.503039] [<ffffffff810feaed>] ? trace_hardirqs_off+0xd/0x10 [ 98.503039] [<ffffffff81848afb>] ? _raw_spin_unlock_irqrestore+0x5b/0x60 [ 98.503039] [<ffffffff816ec48e>] netpoll_poll_dev+0x6e/0x350 [ 98.503039] [<ffffffff816eb977>] ? netpoll_start_xmit+0x137/0x1d0 [ 98.503039] [<ffffffff816b2e8b>] ? __alloc_skb+0x5b/0x210 [ 98.503039] [<ffffffff816ec89d>] netpoll_send_skb_on_dev+0x12d/0x2a0 [ 98.503039] [<ffffffff816eccde>] netpoll_send_udp+0x2ce/0x430 [ 98.503039] [<ffffffffa0190850>] write_msg+0xb0/0xf0 [netconsole] [ 98.503039] [<ffffffff81116b63>] call_console_drivers.constprop.25+0x133/0x260 [ 98.503039] [<ffffffff81117934>] console_unlock+0x2f4/0x580 [ 98.503039] [<ffffffff81117ea5>] ? vprintk_emit+0x2e5/0x630 [ 98.503039] [<ffffffff81117ee5>] vprintk_emit+0x325/0x630 [ 98.503039] [<ffffffff81118379>] vprintk_default+0x29/0x40 [ 98.503039] [<ffffffff8183de4f>] printk+0x55/0x6b [ 98.503039] [<ffffffff816c754c>] __netdev_printk+0x16c/0x260 [ 98.503039] [<ffffffff816c7a12>] netdev_info+0x62/0x80 [ 98.503039] [<ffffffffa02ab464>] bond_change_active_slave+0x134/0x6a0 [bonding] [ 98.503039] [<ffffffffa02aba95>] bond_select_active_slave+0xc5/0x310 [bonding] [ 98.503039] [<ffffffffa02aeb78>] bond_enslave+0x1088/0x10c0 [bonding] [ 98.503039] [<ffffffffa02af46b>] bond_do_ioctl+0x37b/0x400 [bonding] [ 98.503039] [<ffffffff81101d8d>] ? trace_hardirqs_on+0xd/0x10 [ 98.503039] [<ffffffff816dc437>] ? rtnl_lock+0x17/0x20 [ 98.503039] [<ffffffff816e5fd1>] dev_ifsioc+0x331/0x3e0 [ 98.503039] [<ffffffff816e62dc>] dev_ioctl+0xec/0x6c0 [ 98.503039] [<ffffffff816a6c6a>] sock_do_ioctl+0x4a/0x60 [ 98.503039] [<ffffffff816a7300>] sock_ioctl+0x1c0/0x250 [ 98.503039] [<ffffffff81271bfe>] do_vfs_ioctl+0x2ee/0x540 [ 98.503039] [<ffffffff810fd943>] ? up_read+0x23/0x40 [ 98.503039] [<ffffffff81070993>] ? __do_page_fault+0x1d3/0x420 [ 98.503039] [<ffffffff8127e246>] ? __fget_light+0x66/0x90 [ 98.503039] [<ffffffff81271ec9>] SyS_ioctl+0x79/0x90 [ 98.503039] [<ffffffff8184936e>] entry_SYSCALL_64_fastpath+0x12/0x76 [ 98.503039] ---[ end trace 00cfa804b0670051 ]--- Fixes: 616f4541 ("bonding: implement bond_poll_controller()") Signed-off-by:
Nikolay Aleksandrov <nikolay@cumulusnetworks.com> Acked-by:
Mahesh Bandewar <maheshb@google.com> Signed-off-by:
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Sergei Shtylyov authored
The driver overrides the error returned by platform_get_irq() with -ENODEV which e.g. precludes the deferred probing from working. Propagate the real error code to the driver core instead. Signed-off-by:
Sergei Shtylyov <sergei.shtylyov@cogentembedded.com> Acked-by:
Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by:
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Sergei Shtylyov authored
The driver overrides the error returned by platform_get_irq() with -ENODEV which e.g. precludes the deferred probing from working. Propagate the real error code to the driver core instead. Signed-off-by:
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lucien authored
RFC 5061: This is an opaque integer assigned by the sender to identify each request parameter. The receiver of the ASCONF Chunk will copy this 32-bit value into the ASCONF Response Correlation ID field of the ASCONF-ACK response parameter. The sender of the ASCONF can use this same value in the ASCONF-ACK to find which request the response is for. Note that the receiver MUST NOT change this 32-bit value. Address Parameter: TLV This field contains an IPv4 or IPv6 address parameter, as described in Section 3.3.2.1 of [RFC4960]. ASCONF chunk with Error Cause Indication Parameter (Unresolvable Address) should be sent if the Delete IP Address is not part of the association. Endpoint A Endpoint B (ESTABLISHED) (ESTABLISHED) ASCONF -----------------> (Delete IP Address) <----------------- ASCONF-ACK (Unresolvable Address) Signed-off-by:Xin Long <lucien.xin@gmail.com> Acked-by:
Marcelo Ricardo Leitner <marcelo.leitner@gmail.com> Signed-off-by:
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Ken-ichirou MATSUZAWA authored
__netlink_lookup_frame() was always called with the same "pos" value in netlink_forward_ring(). It will look at the same ring entry header over and over again, every time through this loop. Then cycle through the whole ring, advancing ring->head, not "pos" until it equals the "ring->head != head" loop test fails. Signed-off-by:
Ken-ichirou MATSUZAWA <chamas@h4.dion.ne.jp> Signed-off-by:
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Christophe Ricard authored
Since commit c05cdb1b ("netlink: allow large data transfers from user-space"), the kernel may fail to allocate the necessary room for the acknowledgment message back to userspace. This patch introduces a new socket option that trims off the payload of the original netlink message. The netlink message header is still included, so the user can guess from the sequence number what is the message that has triggered the acknowledgment. Signed-off-by:
Pablo Neira Ayuso <pablo@netfilter.org> Signed-off-by:
Christophe Ricard <christophe-h.ricard@st.com> Signed-off-by:
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Joe Stringer authored
Fix build with !CONFIG_NF_CONNTRACK_MARK && CONFIG_OPENVSWITCH_CONNTRACK Fixes: 182e3042 ("openvswitch: Allow matching on conntrack mark") Reported-by:
Joe Stringer <joestringer@nicira.com> Tested-by:
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- 28 Aug, 2015 12 commits
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git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf-nextDavid S. Miller authored
Pablo Neira Ayuso says: ==================== Netfilter updates for net-next The following patchset contains Netfilter/IPVS updates for your net-next tree. In sum, patches to address fallout from the previous round plus updates from the IPVS folks via Simon Horman, they are: 1) Add a new scheduler to IPVS: The weighted overflow scheduling algorithm directs network connections to the server with the highest weight that is currently available and overflows to the next when active connections exceed the node's weight. From Raducu Deaconu. 2) Fix locking ordering in IPVS, always take rtnl_lock in first place. Patch from Julian Anastasov. 3) Allow to indicate the MTU to the IPVS in-kernel state sync daemon. From Julian Anastasov. 4) Enhance multicast configuration for the IPVS state sync daemon. Also from Julian. 5) Resolve sparse warnings in the nf_dup modules. 6) Fix a linking problem when CONFIG_NF_DUP_IPV6 is not set. 7) Add ICMP codes 5 and 6 to IPv6 REJECT target, they are more informative subsets of code 1. From Andreas Herz. 8) Revert the jumpstack size calculation from mark_source_chains due to chain depth miscalculations, from Florian Westphal. 9) Calm down more sparse warning around the Netfilter tree, again from Florian Westphal. ==================== Signed-off-by: -
David S. Miller authored
Alexei Starovoitov says: ==================== support for '%s' in bpf_trace_printk v2->v3: fix the comment to mention that strncpy_from_unsafe() returns the length of the string including the trailing NUL. v1->v2: patch 1: generalize FETCH_FUNC_NAME(memory, string) into strncpy_from_unsafe() patch 2: use it in bpf_trace_printk ==================== Signed-off-by: -
Alexei Starovoitov authored
%s specifier makes bpf program and kernel debugging easier. To make sure that trace_printk won't crash the unsafe string is copied into stack and unsafe pointer is substituted. The following C program: #include <linux/fs.h> int foo(struct pt_regs *ctx, struct filename *filename) { void *name = 0; bpf_probe_read(&name, sizeof(name), &filename->name); bpf_trace_printk("executed %s\n", name); return 0; } when attached to kprobe do_execve() will produce output in /sys/kernel/debug/tracing/trace_pipe : make-13492 [002] d..1 3250.997277: : executed /bin/sh sh-13493 [004] d..1 3250.998716: : executed /usr/bin/gcc gcc-13494 [002] d..1 3250.999822: : executed /usr/lib/gcc/x86_64-linux-gnu/4.7/cc1 gcc-13495 [002] d..1 3251.006731: : executed /usr/bin/as gcc-13496 [002] d..1 3251.011831: : executed /usr/lib/gcc/x86_64-linux-gnu/4.7/collect2 collect2-13497 [000] d..1 3251.012941: : executed /usr/bin/ld Suggested-by:Brendan Gregg <brendan.d.gregg@gmail.com> Signed-off-by:
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Alexei Starovoitov authored
generalize FETCH_FUNC_NAME(memory, string) into strncpy_from_unsafe() and fix sparse warnings that were present in original implementation. Signed-off-by:
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Nikolay Aleksandrov authored
Make sure we catch future netpoll_send_udp users who use it without disabling irqs and also as a hint for poll_controller users. Signed-off-by:
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David S. Miller authored
Sergei Shtylyov says: ==================== Some phylib simplifications Here's 2 patches against DaveM's 'net-next.git' repo. We simplify a bogus string of type casts in the 1st patch and make the code respect some coding standards of the networking code in the 2nd one. I may follow with fixing of checkpatch.pl's complaints. if I have time.. ==================== Signed-off-by: -
Sergei Shtylyov authored
Fix scripts/checkpatch.pl's messages like: CHECK: Comparison to NULL could be written "!phydrv->read_mmd_indirect" BTW, it doesn't detect the reversed comparisons (which I've fixed as well). Signed-off-by:
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Sergei Shtylyov authored
Get rid of the bogus string of type casts where ERR_PTR() is enough. Signed-off-by:
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Daniel Borkmann authored
Just some minor noise follow-up to address some stylistic issues of commit 3b3ae880 ("net: sched: consolidate tc_classify{,_compat}"). Accidentally v1 instead of v2 of that commit got applied, so this patch adds the relative diff. Suggested-by:
Daniel Borkmann <daniel@iogearbox.net> Acked-by:
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Shradha Shah authored
Previously, the driver would refuse to load if it couldn't secure enough VIs from the MC to fulfill its RSS requirements. This was causing probe to fail on later functions in configurations where we'd run out of VIs, such as having many VFs. This change allows the driver to load with fewer VIs, down to a minimum of 2. A warning will be printed saying that RSS requirements were not met, possibly affecting performance. efx->max_tx_channels needs to be set to avoid going down the failure path in efx_probe_nic() immediately in the loop after the probe() NIC-type function. Also, Set rc=ENOSPC when bombing out of efx_probe_nic due to lack of VIs. Signed-off-by:
Shradha Shah <sshah@solarflare.com> Signed-off-by:
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Hariprasad Shenai authored
Forcing uninitialized state allows us to upgrade and reinitialize the adapter. FW_VERSION_T4 = 1.4.0.0 FW_VERSION_T5 = 0.0.0.0 FW_VERSION_T6 = 0.0.0.0 At this point driver supports above and greater than above version. If FW in adapter < min FW_VERSION driver supports tries to upgrade the FW If FW in adapter >= FW_VERSION driver supports then it follows normal path Signed-off-by:Hariprasad Shenai <hariprasad@chelsio.com> Signed-off-by:
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git://git.open-mesh.org/linux-mergeDavid S. Miller authored
Antonio Quartulli says: ==================== Included changes: - code beautification - remove obsolete 'deleted' attribute for bat-gw node - increase internal version number - prevent potential access to netdev object after deregistration - set needed_head/tail_room for batman virtual interface ==================== Signed-off-by:
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