- 21 Mar, 2015 13 commits
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YOSHIFUJI Hideaki/吉藤英明 authored
Signed-off-by:
YOSHIFUJI Hideaki <hideaki.yoshifuji@miraclelinux.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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YOSHIFUJI Hideaki/吉藤英明 authored
net: neighbour: Add mcast_resolicit to configure the number of multicast resolicitations in PROBE state. We send unicast neighbor (ARP or NDP) solicitations ucast_probes times in PROBE state. Zhu Yanjun reported that some implementation does not reply against them and the entry will become FAILED, which is undesirable. We had been dealt with such nodes by sending multicast probes mcast_ solicit times after unicast probes in PROBE state. In 2003, I made a change not to send them to improve compatibility with IPv6 NDP. Let's introduce per-protocol per-interface sysctl knob "mcast_ reprobe" to configure the number of multicast (re)solicitation for reconfirmation in PROBE state. The default is 0, since we have been doing so for 10+ years. Reported-by:
Zhu Yanjun <Yanjun.Zhu@windriver.com> CC: Ulf Samuelsson <ulf.samuelsson@ericsson.com> Signed-off-by:
YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by:
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Rafał Miłecki authored
Home routers based on ARM SoCs like BCM4708 also have bcma bus with core supported by bgmac. Signed-off-by:
Rafał Miłecki <zajec5@gmail.com> Signed-off-by:
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Rafał Miłecki authored
On ARM SoCs with bgmac Ethernet hardware we don't have any normal PHY. There is always a switch attached but it's not even controlled over MDIO like in case of MIPS devices. We need a fixed PHY to be able to send/receive packets from the switch. Signed-off-by:
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git://git.kernel.org/pub/scm/linux/kernel/git/jkirsher/next-queueDavid S. Miller authored
Jeff Kirsher says: ==================== Intel Wired LAN Driver Updates 2015-03-20 This series contains updates to ixgb, e1000e, igb and igbvf. Eliezer and Todd provide patches to fix a potential issue found during code inspection. When bringing down an interface netif_carrier_off() should be one of the first things we do, since this will prevent the stack from queueing more packets to this interface. Yanir provides a fix for e1000e that was found in validating i219, where the call to e1000e_write_protect_nvm_ich8lan() is no longer supported in newer hardware. Access to these registers causes a system freeze in early steppings and is ignored in later steppings. ==================== Signed-off-by: -
Mathieu Olivari authored
Change bd76a116 made all DSA drivers depend on NET_DSA rather than selecting them. However, as the only way to select this option was to actually select a driver, it made DSA impossible to enable at all. This patch adds an explicit entry which the user will have to enable prior selecting a driver. Signed-off-by:
Mathieu Olivari <mathieu@codeaurora.org> Signed-off-by:
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Scott Feldman authored
Suggested-by:
Ben Hutchings <ben@decadent.org.uk> Signed-off-by:
Scott Feldman <sfeldma@gmail.com> Signed-off-by:
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Eric Dumazet authored
This reverts commit ca10b9e9. No longer needed after commit eb8895de ("tcp: tcp_make_synack() should use sock_wmalloc") When under SYNFLOOD, we build lot of SYNACK and hit false sharing because of multiple modifications done on sk_listener->sk_wmem_alloc Since tcp_make_synack() uses sock_wmalloc(), there is no need to call skb_set_owner_w() again, as this adds two atomic operations. Signed-off-by:
Eric Dumazet <edumazet@google.com> Signed-off-by:
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Todd Fujinaka authored
Use netif_carrier_off() first, since that will prevent the stack from queuing more packets to this IF. This operation is fast, and should behave much nicer when trying to bring down an interface under load. Reported-by:
Eliezer Tamir <eliezer.tamir@linux.intel.com> Signed-off-by:
Todd Fujinaka <todd.fujinaka@intel.com> Signed-off-by:
Jeff Kirsher <jeffrey.t.kirsher@intel.com>
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Todd Fujinaka authored
Use netif_carrier_off() first, since that will prevent the stack from queuing more packets to this IF. This operation is fast, and should behave much nicer when trying to bring down an interface under load. Reported-by:
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Yanir Lubetkin authored
The call to e1000e_write_protect_nvm_ich8lan() is no longer supported by HW. Access to these registers causes a system freeze in A step hardware and is ignored in B step hardware. This function must not be called in hardware newer than LPT. Signed-off-by:
Yanir Lubetkin <yanirx.lubetkin@intel.com> Tested-by:
Aaron Brown <aaron.f.brown@intel.com> Signed-off-by:
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Eliezer Tamir authored
When bringing down an interface netif_carrier_off() should be one the first things we do, since this will prevent the stack from queuing more packets to this interface. This operation is very fast, and should make the device behave much nicer when trying to bring down an interface under load. Also, this would Do The Right Thing (TM) if this device has some sort of fail-over teaming and redirect traffic to the other IF. Move netif_carrier_off as early as possible. Signed-off-by:
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Eliezer Tamir authored
When bringing down an interface netif_carrier_off() should be one the first things we do, since this will prevent the stack from queuing more packets to this interface. This operation is very fast, and should make the device behave much nicer when trying to bring down an interface under load. Also, this would Do The Right Thing (TM) if this device has some sort of fail-over teaming and redirect traffic to the other IF. Move netif_carrier_off as early as possible. Signed-off-by:
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- 20 Mar, 2015 27 commits
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David S. Miller authored
Daniel Borkmann says: ==================== This set adds native eBPF support also to act_bpf and thus covers tc with eBPF in the classifier *and* action part. A link to iproute2 preview has been provided in patch 2 and the code will be pushed out after Stephen has processed the classifier part and helper bits for tc. This set depends on ced585c8 ("act_bpf: allow non-default TC_ACT opcodes as BPF exec outcome"), so a net into net-next merge would be required first. Hope that's fine by you, Dave. ;) ==================== Signed-off-by:
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Daniel Borkmann authored
This work extends the "classic" BPF programmable tc action by extending its scope also to native eBPF code! Together with commit e2e9b654 ("cls_bpf: add initial eBPF support for programmable classifiers") this adds the facility to implement fully flexible classifier and actions for tc that can be implemented in a C subset in user space, "safely" loaded into the kernel, and being run in native speed when JITed. Also, since eBPF maps can be shared between eBPF programs, it offers the possibility that cls_bpf and act_bpf can share data 1) between themselves and 2) between user space applications. That means that, f.e. customized runtime statistics can be collected in user space, but also more importantly classifier and action behaviour could be altered based on map input from the user space application. For the remaining details on the workflow and integration, see the cls_bpf commit e2e9b654. Preliminary iproute2 part can be found under [1]. [1] http://git.breakpoint.cc/cgit/dborkman/iproute2.git/log/?h=ebpf-actSigned-off-by:
Daniel Borkmann <daniel@iogearbox.net> Cc: Jamal Hadi Salim <jhs@mojatatu.com> Cc: Jiri Pirko <jiri@resnulli.us> Acked-by:
Jiri Pirko <jiri@resnulli.us> Acked-by:
Alexei Starovoitov <ast@plumgrid.com> Signed-off-by:
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Daniel Borkmann authored
In order to prepare eBPF support for tc action, we need to add sched_act_type, so that the eBPF verifier is aware of what helper function act_bpf may use, that it can load skb data and read out currently available skb fields. This is bascially analogous to 96be4325 ("ebpf: add sched_cls_type and map it to sk_filter's verifier ops"). BPF_PROG_TYPE_SCHED_CLS and BPF_PROG_TYPE_SCHED_ACT need to be separate since both will have a different set of functionality in future (classifier vs action), thus we won't run into ABI troubles when the point in time comes to diverge functionality from the classifier. The future plan for act_bpf would be that it will be able to write into skb->data and alter selected fields mirrored in struct __sk_buff. For an initial support, it's sufficient to map it to sk_filter_ops. Signed-off-by:
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git://git.kernel.org/pub/scm/linux/kernel/git/davem/netDavid S. Miller authored
Conflicts: drivers/net/ethernet/emulex/benet/be_main.c net/core/sysctl_net_core.c net/ipv4/inet_diag.c The be_main.c conflict resolution was really tricky. The conflict hunks generated by GIT were very unhelpful, to say the least. It split functions in half and moved them around, when the real actual conflict only existed solely inside of one function, that being be_map_pci_bars(). So instead, to resolve this, I checked out be_main.c from the top of net-next, then I applied the be_main.c changes from 'net' since the last time I merged. And this worked beautifully. The inet_diag.c and sysctl_net_core.c conflicts were simple overlapping changes, and were easily to resolve. Signed-off-by: -
Herbert Xu authored
We need to include linux/errno.h in rhashtable.h since it doesn't always get included otherwise. Reported-by:
kbuild test robot <fengguang.wu@intel.com> Signed-off-by:
Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by:
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Al Viro authored
Cc: stable@vger.kernel.org # v3.19 Signed-off-by:
Al Viro <viro@zeniv.linux.org.uk> Signed-off-by:
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David S. Miller authored
Tom Lendacky says: ==================== amd-xgbe: AMD XGBE driver updates 2015-03-19 The following series of patches includes functional updates and changes to the driver. - Use the phydev->advertising field instead of the phydev->supported field when configuring for auto-negotiation, etc. - Use the phy_driver flags field for setting the transceiver type instead of hardcoding it in the ethtool support. - Provide an auto-negotiation timeout check - Clarify the Tx/Rx queue information messages - Use the new DMA memory barrier operations - Set the device DMA mask based on what the hardware reports - Remove the software implementation of Tx coalescing - Fix the reporting of the Rx coalescing value - Use napi_alloc_skb when allocating an SKB in softirq This patch series is based on net-next. Changes from v2: - Use jiffies instead of timespec for the auto-negotiation timeout check - Remove the Rx path SKB allocation re-work patch since we should only inline the headers and the current code guards better against any hardware bugs Changes from v1: - Default to 32-bit DMA width (minimum supported) if hardware returns an unexpected DMA width value ==================== Signed-off-by: -
Lendacky, Thomas authored
Use the napi_alloc_skb function to allocate an skb when running within the softirq context to avoid calls to local_irq_save/restore. Signed-off-by:
Tom Lendacky <thomas.lendacky@amd.com> Signed-off-by:
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Lendacky, Thomas authored
The Rx coalescing value is internally converted from usecs to a value that the hardware can use. When reporting the Rx coalescing value, this internal value is converted back to usecs. During the conversion from and back to usecs some rounding occurs. So, for example, when setting an Rx usec of 30, it will be reported as 29. Fix this reporting issue by keeping the original usec value and using that during reporting. Signed-off-by:
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Lendacky, Thomas authored
The Tx coalescing support in the driver was a software implementation for something lacking in the hardware. Using hrtimers, the idea was to trigger a timer interrupt after having queued a packet for transmit. Unfortunately, as the timer value was lowered, the timer expired before the hardware actually did the transmit and so it was racey and resulted in unnecessary interrupts. Remove the Tx coalescing support and hrtimer and replace with a Tx timer that is used as a reclaim timer in case of inactivity. Signed-off-by:
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Lendacky, Thomas authored
The hardware supplies a value that indicates the DMA range that it is capable of using. Use this value rather than hard-coding it in the driver. Signed-off-by:
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Lendacky, Thomas authored
Use the new lighter weight memory barriers when working with the device descriptors. Signed-off-by:
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Lendacky, Thomas authored
Clarify that the queues referred to in a message when the device is brought up are hardware queues and not necessarily related to the Linux network queues. Signed-off-by:
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Lendacky, Thomas authored
Currently, there is no interrupt code that indicates auto-negotiation has timed out. If the auto-negotiation has timed out then the start of a new auto-negotiation will begin again with a new base page being received. The state machine could be in a state that is not expecting this interrupt code which results in an error during auto-negotiation. Update the code to timestamp when the auto-negotiation starts. Should another page received interrupt code occur before auto-negotiation has completed but after the auto-negotiation timeout, then reset the state machine to allow the auto-negotiation to continue. Signed-off-by:
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Lendacky, Thomas authored
Remove the setting of the transceiver type when retrieving the device settings using ethtool and instead set the transceiver type in the phy_driver structure flags field. Change the transceiver type to be internal, also. Signed-off-by:
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Lendacky, Thomas authored
With ethtool being able to control what is advertised, the advertising field is what should be used for priming the auto-negotiation registers and for various other checks, instead of the supported field. Also, move the initial setting of the supported and advertising fields into the probe function so that they are not reset each time the device is brought up, thus allowing the user to set as desired before bringing the device up. Signed-off-by:
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Catalin Marinas authored
Commit db31c55a (net: clamp ->msg_namelen instead of returning an error) introduced the clamping of msg_namelen when the unsigned value was larger than sizeof(struct sockaddr_storage). This caused a msg_namelen of -1 to be valid. The native code was subsequently fixed by commit dbb490b9 (net: socket: error on a negative msg_namelen). In addition, the native code sets msg_namelen to 0 when msg_name is NULL. This was done in commit (6a2a2b3a net:socket: set msg_namelen to 0 if msg_name is passed as NULL in msghdr struct from userland) and subsequently updated by 08adb7da (fold verify_iovec() into copy_msghdr_from_user()). This patch brings the get_compat_msghdr() in line with copy_msghdr_from_user(). Fixes: db31c55a (net: clamp ->msg_namelen instead of returning an error) Cc: David S. Miller <davem@davemloft.net> Cc: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by:
Catalin Marinas <catalin.marinas@arm.com> Signed-off-by:
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David S. Miller authored
Herbert Xu says: ==================== rhashtable: Introduce inlined interface This series of patches introduces the inlined rhashtable interface. The idea is to make all the function pointers visible to the compiler by providing the rhashtable_params structure explicitly to each inline rhashtable function. For example, instead of doing obj = rhashtable_lookup(ht, key); you would now do obj = rhashtable_lookup_fast(ht, key, params); Where params is the same data that you would give to rhashtable_init. In particular, within rhashtable.c itself we would simply supply ht->p. So to convert users over, you simply have to make params globally accessible, e.g., by placing it in a static const variable, which can then be used at each inlined call site, as well as by the rhashtable_init call. The only ticky bit is that some users (i.e., netfilter) has a dynamic key length. This is dealt with by using params.key_len in the inline functions when it is non-zero, and otherwise falling back on ht->p.key_len. Note that I've only tested this on one compiler, gcc 4.7.2. So please test this with your compilers as well and make sure that the code is actually inlined without indirect function calls. ==================== Signed-off-by: -
Herbert Xu authored
Now that all rhashtable users have been converted over to the inline interface, this patch removes the unused out-of-line interface. Signed-off-by:
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Herbert Xu authored
This patch converts tipc to the inlined rhashtable interface. Signed-off-by:
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Herbert Xu authored
This patch converts test_rhashtable to the inlined rhashtable interface. Signed-off-by:
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Herbert Xu authored
This patch converts nft_hash to the inlined rhashtable interface. This patch also replaces the call to rhashtable_lookup_compare with a straight rhashtable_lookup_fast because it's simply doing a memcmp (in fact nft_hash_lookup already uses memcmp instead of nft_data_cmp). Furthermore, the compare function is only meant to compare, it is not supposed to have side-effects. The current side-effect code can simply be moved into the nft_hash_get. Signed-off-by:
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Herbert Xu authored
Currently the name space is a de facto key because it has to match before we find an object in the hash table. However, it isn't in the hash value so all objects from different name spaces with the same port ID hash to the same bucket. This is bad as the number of name spaces is unbounded. This patch fixes this by using the namespace when doing the hash. Because the namespace field doesn't lie next to the portid field in the netlink socket, this patch switches over to the rhashtable interface without a fixed key. This patch also uses the new inlined rhashtable interface where possible. Signed-off-by:
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Herbert Xu authored
This patch deals with the complaint that we make indirect function calls on the fast paths unnecessarily in rhashtable. We resolve it by moving the fast paths into inline functions that take struct rhashtable_param (which obviously must be the same set of parameters supplied to rhashtable_init) as an argument. The only remaining indirect call is to obj_hashfn (or key_hashfn it obj_hashfn is unset) on the rehash as well as the insert-during- rehash slow path. This patch also extends the support of vairable-length keys to include those where the key is fixed but scattered in the object. For example, in netlink we want to key off the namespace and the portid but they're not next to each other. This patch does this by directly using the object hash function as the indicator of whether the key is accessible or not. It also adds a new function obj_cmpfn to compare a key against an object. This means that the caller no longer needs to supply explicit compare functions. All this is done in a backwards compatible manner so no existing users are affected until they convert to the new interface. Signed-off-by:
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Herbert Xu authored
This patch marks the rhashtable_init params argument const as there is no reason to modify it since we will always make a copy of it in the rhashtable. This patch also fixes a bug where we don't actually round up the value of min_size unless it is less than HASH_MIN_SIZE. Signed-off-by:
Thomas Graf <tgraf@suug.ch> Signed-off-by:
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Daniel Borkmann authored
Commit c2497395 ("bpf: allow BPF programs access 'protocol' and 'vlan_tci' fields") has added support for accessing protocol, vlan_present and vlan_tci into the skb offset map. As referenced in the below discussion, accessing skb->protocol from an eBPF program should be converted without handling endianess. The reason for this is that an eBPF program could simply do a check more naturally, by f.e. testing skb->protocol == htons(ETH_P_IP), where the LLVM compiler resolves htons() against a constant automatically during compilation time, as opposed to an otherwise needed run time conversion. After all, the way of programming both from a user perspective differs quite a lot, i.e. bpf_asm ["ld proto"] versus a C subset/LLVM. Reference: https://patchwork.ozlabs.org/patch/450819/Signed-off-by:
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Marcelo Ricardo Leitner authored
Commit baf606d9 ("ipv4,ipv6: grab rtnl before locking the socket") missed to update two setsockopt options, IPV6_JOIN_ANYCAST and IPV6_LEAVE_ANYCAST, causing a lock inverstion regarding to the updated ones. As ipv6_sock_ac_join and ipv6_sock_ac_leave are only called from do_ipv6_setsockopt, we are good to just move the rtnl lock upper. Fixes: baf606d9 ("ipv4,ipv6: grab rtnl before locking the socket") Reported-by:
Ying Huang <ying.huang@intel.com> Signed-off-by:
Marcelo Ricardo Leitner <marcelo.leitner@gmail.com> Signed-off-by:
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