- 12 12月, 2013 15 次提交
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由 Daniel Borkmann 提交于
There are a couple of valid use cases for a minimal low-level bpf asm like tool, for example, using/linking to libpcap is not an option, the required BPF filters use Linux extensions that are not supported by libpcap's compiler, a filter might be more complex and not cleanly implementable with libpcap's compiler, particular filter codes should be optimized differently than libpcap's internal BPF compiler does, or for security audits of emitted BPF JIT code for prepared set of BPF instructions resp. BPF JIT compiler development in general. Then, in such cases writing such a filter in low-level syntax can be an good alternative, for example, xt_bpf and cls_bpf users might have requirements that could result in more complex filter code, or one that cannot be expressed with libpcap (e.g. different return codes in cls_bpf for flowids on various BPF code paths). Moreover, BPF JIT implementors may wish to manually write test cases in order to verify the resulting JIT image, and thus need low-level access to BPF code generation as well. Therefore, complete the available toolchain for BPF with this small bpf_asm helper tool for the tools/net/ directory. These 3 complementary minimal helper tools round up and facilitate BPF development. Signed-off-by: NDaniel Borkmann <dborkman@redhat.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Daniel Borkmann 提交于
This patch adds a minimal BPF debugger that "emulates" the kernel's BPF engine (w/o extensions) and allows for single stepping (forwards and backwards through BPF code) or running with >=1 breakpoints through selected or all packets from a pcap file with a provided user filter in order to facilitate verification of a BPF program. When a breakpoint is being hit, it dumps all register contents, decoded instructions and in case of branches both decoded branch targets as well as other useful information. Having this facility is in particular useful to verify BPF programs against given test traffic *before* attaching to a live system. With the general availability of cls_bpf, xt_bpf, socket filters, team driver and e.g. PTP code, all BPF users, quite often a single more complex BPF program is being used. Reasons for a more complex BPF program are primarily to optimize execution time for making a verdict when multiple simple BPF programs are combined into one in order to prevent parsing same headers multiple times. In particular, for cls_bpf that can have various return paths for encoding flowids, and xt_bpf to come to a fw verdict this can be the case. Therefore, as this can result in more complex and harder to debug code, it would be very useful to have this minimal tool for testing purposes. It can also be of help for BPF JIT developers as filters are "test attached" to the kernel on a temporary socket thus triggering a JIT image dump when enabled. The tool uses an interactive libreadline shell with auto-completion and history support. Signed-off-by: NDaniel Borkmann <dborkman@redhat.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Olof Johansson 提交于
Minor fix for printk format of a phys_addr_t, and the switch of two local functions to static since they're not used outside of the file. Signed-off-by: NOlof Johansson <olof@lixom.net> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Olof Johansson 提交于
Only used locally. Found by sparse. Signed-off-by: NOlof Johansson <olof@lixom.net> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Olof Johansson 提交于
Silences the below warnings when building with ARM_LPAE enabled, which gives longer dma_addr_t by default: drivers/net/ethernet/ti/davinci_cpdma.c: In function 'cpdma_desc_pool_create': drivers/net/ethernet/ti/davinci_cpdma.c:182:3: warning: passing argument 3 of 'dma_alloc_attrs' from incompatible pointer type [enabled by default] drivers/net/ethernet/ti/davinci_cpdma.c: In function 'desc_phys': drivers/net/ethernet/ti/davinci_cpdma.c:222:25: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast] drivers/net/ethernet/ti/davinci_cpdma.c:223:8: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast] Signed-off-by: NOlof Johansson <olof@lixom.net> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Matthew Whitehead 提交于
Removed the shared ei_debug variable. Replaced it by adding u32 msg_enable to the private struct ei_device. Now each 8390 ethernet instance has a per-device logging variable. Changed older style printk() calls to more canonical forms. Tested on: ne, ne2k-pci, smc-ultra, and wd hardware. V4.0 - Substituted pr_info() and pr_debug() for printk() KERN_INFO and KERN_DEBUG V3.0 - Checked for cases where pr_cont() was most appropriate choice. - Changed module parameter from 'debug' to 'msg_enable' because debug was no longer the best description. V2.0 - Changed netif_msg_(drv|probe|ifdown|rx_err|tx_err|tx_queued|intr|rx_status|hw) to netif_(dbg|info|warn|err) where possible. Signed-off-by: NMatthew Whitehead <tedheadster@gmail.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Jiri Benc 提交于
RFC 4191 states in 3.5: When a host avoids using any non-reachable router X and instead sends a data packet to another router Y, and the host would have used router X if router X were reachable, then the host SHOULD probe each such router X's reachability by sending a single Neighbor Solicitation to that router's address. A host MUST NOT probe a router's reachability in the absence of useful traffic that the host would have sent to the router if it were reachable. In any case, these probes MUST be rate-limited to no more than one per minute per router. Currently, when the neighbour corresponding to a router falls into NUD_FAILED, it's never considered again. Introduce a new rt6_nud_state value, RT6_NUD_FAIL_PROBE, which suggests the route should not be used but should be probed with a single NS. The probe is ratelimited by the existing code. To better distinguish meanings of the failure values, rename RT6_NUD_FAIL_SOFT to RT6_NUD_FAIL_DO_RR. Signed-off-by: NJiri Benc <jbenc@redhat.com> Acked-by: NHannes Frederic Sowa <hannes@stressinduktion.org> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 wangweidong 提交于
In sctp_err_lookup, goto out while the asoc is not NULL, so remove the check NULL. Also, in sctp_err_finish which called by sctp_v4_err and sctp_v6_err, they pass asoc to sctp_err_finish while the asoc is not NULL, so remove the check. Signed-off-by: NWang Weidong <wangweidong1@huawei.com> Acked-by: NNeil Horman <nhorman@tuxdriver.com> Acked-by: NVlad Yasevich <vyasevich@gmail.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Yang Yingliang 提交于
It already has a NULL pointer judgment of rtab in qdisc_put_rtab(). Remove the judgment outside of qdisc_put_rtab(). Signed-off-by: NYang Yingliang <yangyingliang@huawei.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Nicolas Dichtel 提交于
Help of this function says: "in_dev: only on this interface, 0=any interface", but since commit 39a6d063 ("[NETNS]: Process inet_confirm_addr in the correct namespace."), the code supposes that it will never be NULL. This function is never called with in_dev == NULL, but it's exported and may be used by an external module. Because this patch restore the ability to call inet_confirm_addr() with in_dev == NULL, I partially revert the above commit, as suggested by Julian. CC: Julian Anastasov <ja@ssi.bg> Signed-off-by: NNicolas Dichtel <nicolas.dichtel@6wind.com> Reviewed-by: NJulian Anastasov <ja@ssi.bg> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Gao feng 提交于
vxlan_group_used only allows device to leave multicast group when the remote_ip of this vxlan device is difference from other vxlan devices' remote_ip. this will cause device not leave multicast group untile the vn_sock of this vxlan deivce being released. The check in vxlan_group_used is not quite precise. since even the remote_ip is same, but these vxlan devices may use different lower devices, and they may use different vn_socks. Only when some vxlan devices use the same vn_sock,same lower device and same remote_ip, the mc_list of the vn_sock should not be changed. Signed-off-by: NGao feng <gaofeng@cn.fujitsu.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Gao feng 提交于
In vxlan_open, vxlan_group_used always returns true, because the state of the vxlan deivces which we want to open has alreay been running. and it has already in vxlan_list. Since ip_mc_join_group takes care of the reference of struct ip_mc_list. removing vxlan_group_used here is safe. Signed-off-by: NGao feng <gaofeng@cn.fujitsu.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Rafał Miłecki 提交于
Signed-off-by: NRafał Miłecki <zajec5@gmail.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Rafał Miłecki 提交于
Without this bgmac_adjust_link didn't know it should re-initialize MAC state. This led to the MAC not working after if down & up routine. Signed-off-by: NRafał Miłecki <zajec5@gmail.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Yang Yingliang 提交于
SKIP_NONLOCAL hides the control flow. The control flow should be inlined and expanded explicitly in code so that someone who reads it can tell the control flow can be changed by the statement. Signed-off-by: NYang Yingliang <yangyingliang@huawei.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 11 12月, 2013 25 次提交
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由 Soren Brinkmann 提交于
When adjusting the link speed, the target frequency is determined by a 'swith (LINK_SPEED)' statement, that assigns the target rate only for valid and expected LINK_SPEED values. This incomplete switch statement leads to the following build warning: drivers/net/ethernet/cadence/macb.c: In function 'macb_handle_link_change': >> drivers/net/ethernet/cadence/macb.c:241:14: warning: 'rate' may be used uninitialized in this function [-Wmaybe-uninitialized] netdev_warn(dev, "unable to generate target frequency: %ld Hz\n", ^ drivers/net/ethernet/cadence/macb.c:215:13: note: 'rate' was declared here long ferr, rate, rate_rounded; Fixing this by bailing out of that function in the switch's default case before the rate variable is used. Reported-by: Nkbuild test robot <fengguang.wu@intel.com> Signed-off-by: NSoren Brinkmann <soren.brinkmann@xilinx.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 David S. Miller 提交于
Jon Maloy says: ==================== tipc: cleanups in media and bearer layer This commit series performs a number cleanups in order to make the bearer and media part of the code more comprehensible and manageable. ==================== Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Ying Xue 提交于
In early versions of TIPC it was possible to administratively block individual links through the use of the member flag 'blocked'. This functionality was deemed redundant, and since commit 7368dd ("tipc: clean out all instances of #if 0'd unused code"), this flag has been unused. In the current code, a link only needs to be blocked for sending and reception if it is subject to an ongoing link failover. In that case, it is sufficient to check if the number of expected failover packets is non-zero, something which is done via the funtion 'link_blocked()'. This commit finally removes the redundant 'blocked' flag completely. Signed-off-by: NYing Xue <ying.xue@windriver.com> Reviewed-by: NPaul Gortmaker <paul.gortmaker@windriver.com> Signed-off-by: NJon Maloy <jon.maloy@ericsson.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Ying Xue 提交于
Currently TIPC supports two L2 media types, Ethernet and Infiniband. Because both these media are accessed through the common net_device API, several functions in the two media adaptation files turn out to be fully or almost identical, leading to unnecessary code duplication. In this commit we extract this common code from the two media files and move them to the generic bearer.c. Additionally, we change the function names to reflect their real role: to access L2 media, irrespective of type. Signed-off-by: NYing Xue <ying.xue@windriver.com> Cc: Patrick McHardy <kaber@trash.net> Reviewed-by: NPaul Gortmaker <paul.gortmaker@windriver.com> Signed-off-by: NJon Maloy <jon.maloy@ericsson.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Ying Xue 提交于
Currently, registering a TIPC stack handler in the network device layer is done twice, once for Ethernet (eth_media) and Infiniband (ib_media) repectively. But, as this registration is not media specific, we can avoid some code duplication by moving the registering function to the generic bearer layer, to the file bearer.c, and call it only once. The same is true for the network device event notifier. As a side effect, the two workqueues we are using for for setting up/ cleaning up media can now be eliminated. Furthermore, the array for storing the specific media type structs, media_array[], can be entirely deleted. Note that the eth_started and ib_started flags were removed during the code relocation. There is now only one call to bearer_setup and bearer_cleanup, and these can logically not race against each other. Despite its size, this cleanup work incurs no functional changes in TIPC. In particular, it should be noted that the sequence ordering of received packets is unaffected by this change, since packet reception never was subject to any work queue handling in the first place. Signed-off-by: NYing Xue <ying.xue@windriver.com> Cc: Patrick McHardy <kaber@trash.net> Signed-off-by: NJon Maloy <jon.maloy@ericsson.com> Reviewed-by: NPaul Gortmaker <paul.gortmaker@windriver.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Ying Xue 提交于
TIPC is currently using the field 'af_packet_priv' in struct net_device as a handle to find the bearer instance associated to the given network device. But, by doing so it is blocking other networking cleanups, such as the one discussed here: http://patchwork.ozlabs.org/patch/178044/ This commit removes this usage from TIPC. Instead, we introduce a new field, 'tipc_ptr', to the net_device structure, to serve this purpose. When TIPC bearer is enabled, the bearer object is associated to 'tipc_ptr'. When a TIPC packet arrives in the recv_msg() upcall from a networking device, the bearer object can now be obtained from 'tipc_ptr'. When a bearer is disabled, the bearer object is detached from its underlying network device by setting 'tipc_ptr' to NULL. Additionally, an RCU lock is used to protect the new pointer. Henceforth, the existing tipc_net_lock is used in write mode to serialize write accesses to this pointer, while the new RCU lock is applied on the read side to ensure that the pointer is 100% valid within its wrapped area for all readers. Signed-off-by: NYing Xue <ying.xue@windriver.com> Cc: Patrick McHardy <kaber@trash.net> Reviewed-by: NPaul Gortmaker <paul.gortmaker@windriver.com> Signed-off-by: NJon Maloy <jon.maloy@ericsson.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Jon Paul Maloy 提交于
struct 'tipc_media' represents the specific info that the media layer adaptors (eth_media and ib_media) expose to the generic bearer layer. We clarify this by improved commenting, and by giving the 'media_list' array the more appropriate name 'media_info_array'. There are no functional changes in this commit. Signed-off-by: NYing Xue <ying.xue@windriver.com> Reviewed-by: NPaul Gortmaker <paul.gortmaker@windriver.com> Signed-off-by: NJon Maloy <jon.maloy@ericsson.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Jon Paul Maloy 提交于
Communication media types are abstracted through the struct 'tipc_media', one per media type. These structs are allocated statically inside their respective media file. Furthermore, in order to be able to reach all instances from a central location, we keep a static array with pointers to these structs. This array is currently initialized at runtime, under protection of tipc_net_lock. However, since the contents of the array itself never changes after initialization, we can just as well initialize it at compile time and make it 'const', at the same time making it obvious that no lock protection is needed here. This commit makes the array constant and removes the redundant lock protection. Signed-off-by: NYing Xue <ying.xue@windriver.com> Reviewed-by: NPaul Gortmaker <paul.gortmaker@windriver.com> Signed-off-by: NJon Maloy <jon.maloy@ericsson.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Ying Xue 提交于
sk_buff lists are currently relased by looping over the list and explicitly releasing each buffer. We replace all occurrences of this loop with a call to kfree_skb_list(). Signed-off-by: NYing Xue <ying.xue@windriver.com> Reviewed-by: NPaul Gortmaker <paul.gortmaker@windriver.com> Signed-off-by: NJon Maloy <jon.maloy@ericsson.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 David S. Miller 提交于
From: Soren Brinkmann <soren.brinkmann@xilinx.com> ==================== net: macb updates I'd really like to have Ethernet working for Zynq, so I want to at least revive this discussion regarding this patchset. And the first four patches should not even be too controversial. I didn't change anything compared to my original RFC submission, except for a typo in one of the commit messages. Handling the tx_clk as optional clock input seems a little bit weird, but it works on my Zynq platform and should be compatible with other users of macb and their DT descriptions. ==================== Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Soren Brinkmann 提交于
Adjust the ethernet clock according to the negotiated link speed. Signed-off-by: NSoren Brinkmann <soren.brinkmann@xilinx.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Soren Brinkmann 提交于
Use the device managed interface to request the IRQ, simplifying error paths. Signed-off-by: NSoren Brinkmann <soren.brinkmann@xilinx.com> Acked-by: NNicolas Ferre <nicolas.ferre@atmel.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Soren Brinkmann 提交于
Use the device managed version of ioremap to remap IO memory, simplifying error paths. Signed-off-by: NSoren Brinkmann <soren.brinkmann@xilinx.com> Acked-by: NNicolas Ferre <nicolas.ferre@atmel.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Soren Brinkmann 提交于
Migrate to using the device managed interface for clocks and clean up the associated error paths. Signed-off-by: NSoren Brinkmann <soren.brinkmann@xilinx.com> Acked-by: NNicolas Ferre <nicolas.ferre@atmel.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Soren Brinkmann 提交于
Migrate the suspend/resume functions to use the dev_pm_ops PM interface. Signed-off-by: NSoren Brinkmann <soren.brinkmann@xilinx.com> Acked-by: NNicolas Ferre <nicolas.ferre@atmel.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Yang Yingliang 提交于
Macros with multiple statements should be enclosed in a do - while loop Signed-off-by: NYang Yingliang <yangyingliang@huawei.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Yang Yingliang 提交于
Spaces required around that '>' (ctx:VxV) and before the open parenthesis '('. Signed-off-by: NYang Yingliang <yangyingliang@huawei.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Yang Yingliang 提交于
"foo* bar" or "foo * bar" should be "foo *bar". Signed-off-by: NYang Yingliang <yangyingliang@huawei.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Yang Yingliang 提交于
Code indent should use tabs where possible Signed-off-by: NYang Yingliang <yangyingliang@huawei.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Yang Yingliang 提交于
return is not a function, parentheses are not required. Signed-off-by: NYang Yingliang <yangyingliang@huawei.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Jingoo Han 提交于
The driver core clears the driver data to NULL after device_release or on probe failure. Thus, it is not needed to manually clear the device driver data to NULL. Signed-off-by: NJingoo Han <jg1.han@samsung.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Jingoo Han 提交于
The driver core clears the driver data to NULL after device_release or on probe failure. Thus, it is not needed to manually clear the device driver data to NULL. Signed-off-by: NJingoo Han <jg1.han@samsung.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Jingoo Han 提交于
The driver core clears the driver data to NULL after device_release or on probe failure. Thus, it is not needed to manually clear the device driver data to NULL. Signed-off-by: NJingoo Han <jg1.han@samsung.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Jingoo Han 提交于
The driver core clears the driver data to NULL after device_release or on probe failure. Thus, it is not needed to manually clear the device driver data to NULL. Signed-off-by: NJingoo Han <jg1.han@samsung.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Jingoo Han 提交于
The driver core clears the driver data to NULL after device_release or on probe failure. Thus, it is not needed to manually clear the device driver data to NULL. Signed-off-by: NJingoo Han <jg1.han@samsung.com> Signed-off-by: NShreyas N Bhatewara <sbhatewara@vmware.com> Acked-by: NDmitry Torokhov <dtor@vmware.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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