- 09 Aug, 2016 25 commits
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Sven Eckelmann authored
The TTVN is the main information for the debugging of translation table problems. It is therefore necessary when comparing the global translation tables. Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de> Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch>
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Matthias Schiffer authored
This adds the commands BATADV_CMD_GET_TRANSTABLE_LOCAL and BATADV_CMD_GET_TRANSTABLE_GLOBAL, which correspond to the transtable_local and transtable_global debugfs files. The batadv_tt_client_flags enum is moved to the UAPI to expose it as part of the netlink API. Signed-off-by: Matthias Schiffer <mschiffer@universe-factory.net> Signed-off-by: Andrew Lunn <andrew@lunn.ch> [sven.eckelmann@open-mesh.com: add policy for attributes, fix includes] Signed-off-by: Sven Eckelmann <sven.eckelmann@open-mesh.com> [sw@simonwunderlich.de: fix VID attributes content] Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de> Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch>
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Matthias Schiffer authored
BATADV_CMD_GET_HARDIFS will return the list of hardifs (including index, name and MAC address) of all hardifs for a given softif. Signed-off-by: Matthias Schiffer <mschiffer@universe-factory.net> Signed-off-by: Andrew Lunn <andrew@lunn.ch> [sven.eckelmann@open-mesh.com: Reduce the number of changes to BATADV_CMD_GET_HARDIFS, add policy for attributes] Signed-off-by: Sven Eckelmann <sven.eckelmann@open-mesh.com> Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de> Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch>
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Matthias Schiffer authored
BATADV_CMD_GET_ROUTING_ALGOS is used to get the list of supported routing algorithms. Signed-off-by: Matthias Schiffer <mschiffer@universe-factory.net> Signed-off-by: Andrew Lunn <andrew@lunn.ch> [sven.eckelmann@open-mesh.com: Reduce the number of changes to BATADV_CMD_GET_ROUTING_ALGOS, fix includes] Signed-off-by: Sven Eckelmann <sven.eckelmann@open-mesh.com> Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de> Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch>
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Andrew Lunn authored
Debugfs is not netns aware. It thus has problems when the same interface name exists in multiple network name spaces. Work around this by not creating entries for interfaces in name spaces other than the default name space. This means meshes in network namespaces cannot be managed via debugfs, but there will soon be a netlink interface which is netns aware. Signed-off-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de> Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch>
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Andrew Lunn authored
batman-adv tries to prevent the user from placing a batX soft interface into another batman mesh as a hard interface. It does this by walking up the devices list of parents and ensures they are all none batX interfaces. iflink can point to an interface in a different namespace, so also retrieve the parents name space when finding the parent and use it when doing the comparison. Signed-off-by: Andrew Lunn <andrew@lunn.ch> [sven@narfation.org: Fix alignments, simplify parent netns retrieval] Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de> Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch>
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Sven Eckelmann authored
The debug messages of _batadv_update_route were printed before the actual route change is done. At this point it is not really known which curr_router will be replaced. Thus the messages could print the wrong operation. Printing the debug messages after the operation was done avoids this problem. Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch> Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
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Linus Lüssing authored
This silences the following coccinelle warning: "WARNING: sum of probable bitmasks, consider |" Signed-off-by: Linus Lüssing <linus.luessing@c0d3.blue> Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch> Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
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Sven Eckelmann authored
The function batadv_send_skb_unicast is not acquiring a reference for an orig_node nor removing it from any datastructure. It still reduces the reference counter for an object which is still in the hands of the caller. This is confusing and can lead in the future to problems in the reference handling of the caller function. Signed-off-by: Sven Eckelmann <sven@narfation.org> Acked-by: Linus Lüssing <linus.luessing@c0d3.blue> Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch> Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
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Sven Eckelmann authored
The translation table (global, local) is usually the part of batman-adv which has the most dynamical allocated objects. Most of them (tt_local_entry, tt_global_entry, tt_orig_list_entry, tt_change_node, tt_req_node, tt_roam_node) are equally sized. So it makes sense to have them allocated from a kmem_cache for each type. This approach allowed a small wireless router (TP-Link TL-841NDv8; SLUB allocator) to store 34% more translation table entries compared to the current implementation. [1] https://open-mesh.org/projects/batman-adv/wiki/Kmalloc-kmem-cache-testsReported-by: Linus Lüssing <linus.luessing@c0d3.blue> Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch> Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
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Linus Lüssing authored
This patch abstracts the forward packet creation into the new function batadv_forw_packet_alloc(). The queue counting and interface reference counters are now handled internally within batadv_forw_packet_alloc() and its batadv_forw_packet_free() counterpart. This should reduce the risk of having reference/queue counting bugs again and should increase code readibility. Signed-off-by: Linus Lüssing <linus.luessing@c0d3.blue> Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch> Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
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kbuild test robot authored
net/batman-adv/bridge_loop_avoidance.c:1105:9-10: WARNING: return of 0/1 in function 'batadv_bla_process_claim' with return type bool Return statements in functions returning bool should use true/false instead of 1/0. Generated by: scripts/coccinelle/misc/boolreturn.cocci Signed-off-by: Fengguang Wu <fengguang.wu@intel.com> Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch> Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
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Markus Pargmann authored
The difference between tq1 and tq2 are calculated the same way in two separate functions. This patch moves the common code to a separate function 'batadv_iv_ogm_neigh_diff' which handles everything necessary. The other two functions can then handle errors and use the difference directly. Signed-off-by: Markus Pargmann <mpa@pengutronix.de> [sven@narfation.org: rebased on current version, initialize return variable in batadv_iv_ogm_neigh_diff, add kerneldoc, convert to bool return type] Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch> Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
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Antonio Quartulli authored
Now that the GW-mode code is algorithm specific, batman-adv expects the routing algorithm to implement some APIs to make it work. However, such APIs are not mandatory, therefore we might have algorithms not providing them. In this case all the sysfs knobs related to GW-mode should be deactivated to make sure that settings injected by the user for this feature are rejected. Signed-off-by: Antonio Quartulli <a@unstable.cc> Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch> Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
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Antonio Quartulli authored
Since the GW selection logic has been made routing protocol specific it is now possible for B.A.T.M.A.N V to have its own mechanism by providing the API implementation. Implement the GW specific API in the B.A.T.M.A.N. V protocol in order to provide a working GW selection mechanism. Signed-off-by: Antonio Quartulli <a@unstable.cc> Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch> Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
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Antonio Quartulli authored
Each routing protocol may have its own specific logic about gateway election which is potentially based on the metric being used. Create two GW specific API functions and move the current election logic in the B.A.T.M.A.N. IV specific code. Signed-off-by: Antonio Quartulli <a@unstable.cc> Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch> Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
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Antonio Quartulli authored
The B.A.T.M.A.N. V algorithm uses a different metric compared to its predecessor and for this reason the logic used to compute the best Gateway is also changed. This means that the GW selection class fed to this logic has a semantics that depends on the algorithm being used. Make the parsing and printing routine of the GW selection class routing algorithm specific. Each algorithm can now parse (and print) this value independently. If no API is provided by any algorithm, the default is to use the current mechanism of considering such value like an integer between 1 and 255. Signed-off-by: Antonio Quartulli <a@unstable.cc> Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch> Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
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Linus Lüssing authored
Fixes: ef0a937f ("batman-adv: consider outgoing interface in OGM sending") Signed-off-by: Linus Lüssing <linus.luessing@c0d3.blue> Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch> Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
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Sven Eckelmann authored
The kobject_put is only removing the sysfs entry and corresponding entries when its reference counter becomes zero. This tends to lead to collisions when a device is moved between two different network namespaces because some of the sysfs files have to be removed first and then added again to the already moved sysfs entry. WARNING: CPU: 0 PID: 290 at lib/kobject.c:240 kobject_add_internal+0x5ec/0x8a0 kobject_add_internal failed for batman_adv with -EEXIST, don't try to register things with the same name in the same directory. But the caller of kobject_put can already remove the sysfs entry before it does the kobject_put. This removal is done even when the reference counter is not yet zero and thus avoids the problem. Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch> Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
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Sven Eckelmann authored
Postponing the removal of the interface breaks the expected behavior of NETDEV_UNREGISTER and NETDEV_PRE_TYPE_CHANGE. This is especially problematic when an interface is removed and added in quick succession. This reverts commit 5bc44dc8 ("batman-adv: postpone sysfs removal when unregistering"). Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch> Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
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Sven Eckelmann authored
The legacy sysfs interface to modify interfaces belonging to batman-adv is run inside a region holding s_lock. And to add a net_device, it has to also get the rtnl_lock. This is exactly the other way around than in other virtual net_devices and conflicts with netdevice notifier which executes inside rtnl_lock. The inverted lock situation is currently solved by executing the removal of netdevices via workqueue. The workqueue isn't executed inside rtnl_lock and thus can independently get the s_lock and the rtnl_lock. But this workaround fails when the netdevice notifier creates events in quick succession and the earlier triggered removal of a net_device isn't processed in the workqueue before the adding of the new netdevice (with same name) event is issued. Instead the legacy sysfs interface store events have to be enqueued in a workqueue to loose the s_lock. The worker is then free to get the required locks and the deadlock is avoided. Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch> Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
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Sven Eckelmann authored
The standard kernel API to add new virtual interfaces and attach other interfaces to it is rtnl-link. batman-adv supports it since v3.10. This functionality should be used instead of the legacy batman-adv-only sysfs interface. Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch> Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
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Sven Eckelmann authored
The batman-adv module can automatically be loaded when operations over the rtnl link are triggered. This requires only the correct rtnl link name in the module header. Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch> Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
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Sven Eckelmann authored
Some operations in batadv_algo_ops are optional and marked as such in the kerneldoc. But some of them miss the "(optional)" in their kerneldoc. These have to also be marked to give an implementor of an algorithm the correct background information without looking in the code calling these function pointers. Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch> Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
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Simon Wunderlich authored
Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de> Signed-off-by: Sven Eckelmann <sven@narfation.org>
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- 08 Aug, 2016 15 commits
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Xin Long authored
Commit 52253db9 ("sctp: also point GSO head_skb to the sk when it's available") used event->chunk->head_skb to get the head_skb in sctp_ulpevent_set_owner(). But at that moment, the event->chunk was NULL, as it cloned the skb in sctp_ulpevent_make_rcvmsg(). Therefore, that patch didn't really work. This patch is to move the event->chunk initialization before calling sctp_ulpevent_receive_data() so that it uses event->chunk when it's valid. Fixes: 52253db9 ("sctp: also point GSO head_skb to the sk when it's available") Signed-off-by: Xin Long <lucien.xin@gmail.com> Acked-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com> Acked-by: Neil Horman <nhorman@tuxdriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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pravin shelar authored
vxlan driver has bypass for local vxlan traffic, but that depends on information about all VNIs on local system in vxlan driver. This is not available in case of LWT. Therefore following patch disable encap bypass for LWT vxlan traffic. Fixes: ee122c79 ("vxlan: Flow based tunneling"). Reported-by: Jakub Libosvar <jlibosva@redhat.com> Signed-off-by: Pravin B Shelar <pshelar@ovn.org> Acked-by: Jiri Benc <jbenc@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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pravin shelar authored
LWT user can specify destination as well as source ip address for given tunnel endpoint. But vxlan is ignoring given source ip address. Following patch uses both ip address to route the tunnel packet. This consistent with other LWT implementations, like GENEVE and GRE. Fixes: ee122c79 ("vxlan: Flow based tunneling"). Signed-off-by: Pravin B Shelar <pshelar@ovn.org> Acked-by: Jiri Benc <jbenc@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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David S. Miller authored
Daniel Borkmann says: ==================== Few BPF helper related checksum fixes The set contains three fixes with regards to CHECKSUM_COMPLETE and BPF helper functions. For details please see individual patches. Thanks! v1 -> v2: - Fixed make htmldocs issue reported by kbuild bot. - Rest as is. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
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Daniel Borkmann authored
When having skbs on ingress with CHECKSUM_COMPLETE, tc BPF programs don't push rcsum of mac header back in and after BPF run back pull out again as opposed to some other subsystems (ovs, for example). For cases like q-in-q, meaning when a vlan tag for offloading is already present and we're about to push another one, then skb_vlan_push() pushes the inner one into the skb, increasing mac header and skb_postpush_rcsum()'ing the 4 bytes vlan header diff. Likewise, for the reverse operation in skb_vlan_pop() for the case where vlan header needs to be pulled out of the skb, we're decreasing the mac header and skb_postpull_rcsum()'ing the 4 bytes rcsum of the vlan header that was removed. However mangling the rcsum here will lead to hw csum failure for BPF case, since we're pulling or pushing data that was not part of the current rcsum. Changing tc BPF programs in general to push/pull rcsum around BPF_PROG_RUN() is also not really an option since current behaviour is ABI by now, but apart from that would also mean to do quite a bit of useless work in the sense that usually 12 bytes need to be rcsum pushed/pulled also when we don't need to touch this vlan related corner case. One way to fix it would be to push the necessary rcsum fixup down into vlan helpers that are (mostly) slow-path anyway. Fixes: 4e10df9a ("bpf: introduce bpf_skb_vlan_push/pop() helpers") Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
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Daniel Borkmann authored
bpf_skb_store_bytes() invocations above L2 header need BPF_F_RECOMPUTE_CSUM flag for updates, so that CHECKSUM_COMPLETE will be fixed up along the way. Where we ran into an issue with bpf_skb_store_bytes() is when we did a single-byte update on the IPv6 hoplimit despite using BPF_F_RECOMPUTE_CSUM flag; simple ping via ICMPv6 triggered a hw csum failure as a result. The underlying issue has been tracked down to a buffer alignment issue. Meaning, that csum_partial() computations via skb_postpull_rcsum() and skb_postpush_rcsum() pair invoked had a wrong result since they operated on an odd address for the hoplimit, while other computations were done on an even address. This mix doesn't work as-is with skb_postpull_rcsum(), skb_postpush_rcsum() pair as it always expects at least half-word alignment of input buffers, which is normally the case. Thus, instead of these helpers using csum_sub() and (implicitly) csum_add(), we need to use csum_block_sub(), csum_block_add(), respectively. For unaligned offsets, they rotate the sum to align it to a half-word boundary again, otherwise they work the same as csum_sub() and csum_add(). Adding __skb_postpull_rcsum(), __skb_postpush_rcsum() variants that take the offset as an input and adapting bpf_skb_store_bytes() to them fixes the hw csum failures again. The skb_postpull_rcsum(), skb_postpush_rcsum() helpers use a 0 constant for offset so that the compiler optimizes the offset & 1 test away and generates the same code as with csum_sub()/_add(). Fixes: 608cd71a ("tc: bpf: generalize pedit action") Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
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Daniel Borkmann authored
Follow-up to commit f8ffad69 ("bpf: add skb_postpush_rcsum and fix dev_forward_skb occasions") to fix an issue for dev_queue_xmit() redirect locations which need CHECKSUM_COMPLETE fixups on ingress. For the same reasons as described in f8ffad69 already, we of course also need this here, since dev_queue_xmit() on a veth device will let us end up in the dev_forward_skb() helper again to cross namespaces. Latter then calls into skb_postpull_rcsum() to pull out L2 header, so that netif_rx_internal() sees CHECKSUM_COMPLETE as it is expected. That is, CHECKSUM_COMPLETE on ingress covering L2 _payload_, not L2 headers. Also here we have to address bpf_redirect() and bpf_clone_redirect(). Fixes: 3896d655 ("bpf: introduce bpf_clone_redirect() helper") Fixes: 27b29f63 ("bpf: add bpf_redirect() helper") Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
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Paul Gortmaker authored
The call site for this function appears as: #ifdef DEBUG data->msg_enable = DEBUG; dump_eth_one(dev); #endif ...leading to the following warning for !DEBUG builds: drivers/net/ethernet/tundra/tsi108_eth.c:169:13: warning: 'dump_eth_one' defined but not used [-Wunused-function] static void dump_eth_one(struct net_device *dev) ^ ...when using the arch/powerpc/configs/mpc7448_hpc2_defconfig Put the function definition under the same #ifdef as the call site to avoid the warning. Cc: "David S. Miller" <davem@davemloft.net> Cc: netdev@vger.kernel.org Cc: linuxppc-dev@lists.ozlabs.org Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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David S. Miller authored
Ido Schimmel says: ==================== mlxsw: DCB fixes Patches 1 and 2 fix a problem in which PAUSE frames settings are wrongly overridden when ieee_setpfc() gets called. Patch 3 adds a missing rollback in port's creation error path. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
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Ido Schimmel authored
We correctly execute mlxsw_sp_port_dcb_fini() when port is removed, but I missed its rollback in the error path of port creation, so add it. Fixes: f00817df ("mlxsw: spectrum: Introduce support for Data Center Bridging (DCB)") Signed-off-by: Ido Schimmel <idosch@mellanox.com> Reviewed-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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Ido Schimmel authored
The PFCC register is used to configure both PAUSE and PFC frames. Therefore, when PFC frames are disabled we must make sure we don't mistakenly also disable PAUSE frames (which might be enabled). Fix this by packing the PFCC register with the current PAUSE settings. Note that this register is also accessed via ethtool ops, but there we are guaranteed to have PFC disabled. Fixes: d81a6bdb ("mlxsw: spectrum: Add IEEE 802.1Qbb PFC support") Signed-off-by: Ido Schimmel <idosch@mellanox.com> Reviewed-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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Ido Schimmel authored
When ieee_setpfc() gets called, PAUSE frames are not necessarily disabled on the port. Check if PAUSE frames are disabled or enabled and configure the port's headroom buffer accordingly. Fixes: d81a6bdb ("mlxsw: spectrum: Add IEEE 802.1Qbb PFC support") Signed-off-by: Ido Schimmel <idosch@mellanox.com> Reviewed-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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Phil Sutter authored
Looks like a simple copy'n'paste error. Fixes: 1aa661f5 ("rhashtable-test: Measure time to insert, remove & traverse entries") Signed-off-by: Phil Sutter <phil@nwl.cc> Signed-off-by: David S. Miller <davem@davemloft.net>
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David S. Miller authored
Phil Sutter says: ==================== sctp_diag: A bunch of fixes for upcoming 'ss' support The following series contains a number of fixes necessary to make my yet unpublished 'ss' support patch functional. Changes since v1: - Fixed patch 2/3 - Rebased whole series onto current net-next/master Changes since v2: - Improved description of patch 2/3 ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
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Phil Sutter authored
Since 'ss' always adds TCPF_CLOSE to idiag_states flags, sctp_diag can't rely upon TCPF_LISTEN flag solely being present when listening sockets are requested. Signed-off-by: Phil Sutter <phil@nwl.cc> Signed-off-by: David S. Miller <davem@davemloft.net>
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