- 10 Jun, 2016 6 commits
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Florian Fainelli authored
This patch adds support for Broadcom's BCM53xx switch family, also known as RoboSwitch. Some of these switches are ubiquituous, found in home routers, Wi-Fi routers, DSL and cable modem gateways and other networking related products. This drivers adds the library driver (b53_common.c) as well as a few bus glue drivers for MDIO, SPI, Switch Register Access Block (SRAB) and memory-mapped I/O into a SoC's address space (Broadcom BCM63xx/33xx). Basic operations are supported to bring the Layer 1/2 up and running, but not much more at this point, subsequent patches add the remaining features. Signed-off-by:
Florian Fainelli <f.fainelli@gmail.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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David S. Miller authored
Florian Fainelli says: ==================== net: dsa: bcm_sf2: add VLAN support This is long overdue, finally add support for VLANs in the Broadcom Starfigther 2 switch driver. There are a few things that make us differ from e.g; mv88e6xxx.c: - we keep a software cache of which VLANs are enabled and which are not to dramatically speed up the VLAN dump operation, we do not have any HW operation which would only return the list of valid VLAN entries, they would have to be all queried one by one, with 4K vlans, this takes a while - the default behavior is equivalent to setting VLAN filtering to 1, still working on implementing a proper port_vlan_filtering callback, but I figured the most conservative behavior is probably okay anyway - without enabling VLANs, the default behavior is to receive any 802.1q frames (per the DSA documentation), however, once we start enabling VLAN support, if an interface leaves the bridge, we still want it to receive all 802.1q frames so we utiliez the "Join all VLAN" feature of the switch to perform that ==================== Signed-off-by: -
Florian Fainelli authored
Add support for configuring VLANs on the Broadcom Starfigther2 switch. This is all done through the bridge vlan facility just like other DSA drivers. Signed-off-by:
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Florian Fainelli authored
Add the definitions for the VLAN registers that we are going to manipulate in subsequent patches. Signed-off-by:
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Florian Fainelli authored
Re-order the bcm_sf2_sw_setup() function so that it is at the far end of the driver to avoid any kind of forward declarations. Signed-off-by:
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Florian Fainelli authored
Add a helper function to fast age something that is controlled by the caller: port, VLAN. We will use this to implement a VLAN fast age operation. Signed-off-by:
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- 09 Jun, 2016 15 commits
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David S. Miller authored
Eric Dumazet says: ==================== net: better lockdep annotations Introduction of qdisc->running seqcount added lockdep false positives. While chasing the bug, it came to me that we had a lot of copies of the same stuff in virtual drivers. This patch series has the qdisc->running fix (considers that a trylock is attempted in lockdep terminology), and adds a generic helper so that we no longer have to patch many virtual drivers when a new per-device or per-qdisc lock is added. Thanks to David Ahern for reporting the issue and testing my patches :) ==================== Signed-off-by: -
Eric Dumazet authored
In case a qdisc is used on a ipvlan device, we need to use different lockdep classes to avoid false positives. Use the new netdev_lockdep_set_classes() generic helper. Signed-off-by:
Eric Dumazet <edumazet@google.com> Signed-off-by:
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Eric Dumazet authored
In case a qdisc is used on a macvlan device, we need to use different lockdep classes to avoid false positives. Use the new netdev_lockdep_set_classes() generic helper. Signed-off-by:
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Eric Dumazet authored
In case a qdisc is used on a vrf device, we need to use different lockdep classes to avoid false positives. Use the new netdev_lockdep_set_classes() generic helper. Reported-by:
David Ahern <dsa@cumulusnetworks.com> Signed-off-by:
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Eric Dumazet authored
It is time to add netdev_lockdep_set_classes() helper so that lockdep annotations per device type are easier to manage. This removes a lot of copies and missing annotations. Signed-off-by:
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Eric Dumazet authored
1) qdisc_run_begin() is really using the equivalent of a trylock. Instead of using write_seqcount_begin(), use a combination of raw_write_seqcount_begin() and correct lockdep annotation. 2) sch_direct_xmit() should use regular spin_lock(root_lock) Fixes: f9eb8aea ("net_sched: transform qdisc running bit into a seqcount") Signed-off-by:
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Vitaly Kuznetsov authored
I'm hitting 5 second timeout in rndis_filter_set_rss_param() while setting RSS parameters for the device. When this happens we end up returning -ETIMEDOUT from the function and rndis_filter_device_add() falls back to setting net_device->max_chn = 1; net_device->num_chn = 1; net_device->num_sc_offered = 0; but after a moment the rndis request succeeds and subchannels start to appear. netvsc_sc_open() does unconditional nvscdev->num_sc_offered-- and it becomes U32_MAX-1. Consequent rndis_filter_device_remove() will hang while waiting for all U32_MAX-1 subchannels to appear and this is not going to happen. The immediate issue could be solved by adding num_sc_offered > 0 check to netvsc_sc_open() but we're getting out of sync with the host and it's not easy to adjust things later, e.g. in this particular case we'll be creating queues without a user request for it and races are expected. Same applies to other parts of the driver which have the same completion timeout. Following the trend in drivers/hv/* code I suggest we remove all these timeouts completely. As a guest we can always trust the host we're running on and if the host screws things up there is no easy way to recover anyway. Signed-off-by:Vitaly Kuznetsov <vkuznets@redhat.com> Acked-by:
Haiyang Zhang <haiyangz@microsoft.com> Signed-off-by:
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Simon Horman authored
ipip6_tunnel_xmit() is called immediately after checking that skb->protocol is htons(ETH_P_IPV6) so there is no need to check it a second time. Found by inspection. Signed-off-by:
Simon Horman <simon.horman@netronome.com> Reviewed-by:
Dinan Gunawardena <dinan.gunawardena@netronome.com> Signed-off-by:
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David S. Miller authored
Florian Westphal says: ==================== sched, cbq: remove OVL_STRATEGY/POLICE support iproute2 does not implement any options that result in the TCA_CBQ_OVL_STRATEGY/TCA_CBQ_POLICE attributes being set/used. This series removes these two attributes from cbq and makes kernel reject them via EOPNOTSUPP in case they are present. The two followup changes then remove several features from qdisc infrastructure that are then no longer used/needed. These are: - The 'drop' method provided by most qdiscs - the 'reshape_fail' function used by some qdiscs - the __parent member in struct Qdisc I tested this with allmod and allyesconfig builds and also with a brief cbq script: tc qdisc add dev eth0 root handle 1:0 cbq bandwidth 10Mbit avpkt 1000 cell 8 tc class add dev eth0 parent 1:0 classid 1:1 est 1sec 8sec cbq bandwidth 10Mbit rate 5Mbit prio 1 allot 1514 maxburst 20 cell 8 avpkt 1000 bounded split 1:0 defmap 3f tc class add dev eth0 parent 1:0 classid 1:2 est 1sec 8sec cbq bandwidth 10Mbit rate 5Mbit prio 1 allot 1514 maxburst 20 cell 8 avpkt 1000 bounded split 1:0 defmap 3f tc filter add dev eth0 parent 1:0 protocol ip prio 1 u32 match ip tos 0x10 0xff classid 1:1 police rate 2Mbit burst 10K reclassify tc filter add dev eth0 parent 1:0 protocol ip prio 1 u32 match ip tos 0x0c 0xff classid 1:2 tc filter add dev eth0 parent 1:0 protocol ip prio 2 u32 match ip tos 0x10 0xff classid 1:2 tc filter add dev eth0 parent 1:0 protocol ip prio 3 u32 match ip tos 0x0 0x0 classid 1:2 No changes since v1 except patch #5 to fix up struct Qdisc layout. ==================== Signed-off-by: -
Florian Westphal authored
Earlier commits removed two members from struct Qdisc which places next_sched/gso_skb into a different cacheline than ->state. This restores the struct layout to what it was before the removal. Move the two members, then add an annotation so they all reside in the same cacheline. This adds a 16 byte hole after cpu_qstats. The hole could be closed but as it doesn't decrease total struct size just do it this way. Reported-by:
Florian Westphal <fw@strlen.de> Signed-off-by:
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Florian Westphal authored
after removal of TCA_CBQ_OVL_STRATEGY from cbq scheduler, there are no more callers of ->drop() outside of other ->drop functions, i.e. nothing calls them. Signed-off-by:
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Florian Westphal authored
After the removal of TCA_CBQ_POLICE in cbq scheduler qdisc->reshape_fail is always NULL, i.e. qdisc_rehape_fail is now the same as qdisc_drop. Signed-off-by:
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Florian Westphal authored
iproute2 doesn't implement any cbq option that results in this attribute being sent to kernel. To make use of it, user would have to - patch iproute2 - add a class - attach a qdisc to the class (default pfifo doesn't work as q->handle is 0 and cbq_set_police() is a no-op in this case) - re-'add' the same class (tc class change ...) again - user must also specifiy a defmap (e.g. 'split 1:0 defmap 3f'), since this 'police' feature relies on its presence - the added qdisc must be one of bfifo, pfifo or netem If all of these conditions are met and _some_ leaf qdiscs, namely p/bfifo, netem, plug or tbf would drop a packet, kernel calls back into cbq, which will attempt to re-queue the skb into a different class as indicated by the parents' defmap entry for TC_PRIO_BESTEFFORT. [ i.e. we behave as if tc_classify returned TC_ACT_RECLASSIFY ]. This feature, which isn't documented or implemented in iproute2, and isn't implemented consistently (most qdiscs like sfq, codel, etc drop right away instead of attempting this reclassification) is the sole reason for the reshape_fail and __parent member in Qdisc struct. So remove TCA_CBQ_POLICE support from the kernel, reject it via EOPNOTSUPP so userspace knows we don't support it, and then remove no-longer needed infrastructure in followup commit. Signed-off-by:
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Florian Westphal authored
since initial revision of cbq in 2004 iproute 2 has never implemented support for TCA_CBQ_OVL_STRATEGY, which is what needs to be set to activate the class->drop() call (TC_CBQ_OVL_DROP strategy must be set by userspace value must be set by userspace). David Miller says: It seems really safe to kill this thing off, flag an error if someone tries to set the attribute, and therefore kill off all of the non-default cbq_ovl_*() functions. A followup commit can then remove all .drop qdisc methods since this removed the only caller. Signed-off-by:
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Shweta Choudaha authored
The ip6 GRE tap device should not be forced to down state to change the mac address and should allow live address change for tap device similar to ipv4 gre. Signed-off-by:
Shweta Choudaha <schoudah@brocade.com> Signed-off-by:
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- 08 Jun, 2016 19 commits
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David S. Miller authored
David Ahern says: ==================== net: vrf: Improve use of FIB rules Currently, VRFs require 1 oif and 1 iif rule per address family per VRF. As the number of VRF devices increases it brings scalability issues with the increasing rule list. All of the VRF rules have the same format with the exception of the specific table id to direct the lookup. Since the table id is available from the oif or iif in the loopup, the VRF rules can be consolidated to a single rule that pulls the table from the VRF device. This solution still allows a user to insert their own rules for VRFs, including rules with additional attributes. Accordingly, it is backwards compatible with existing setups and allows other policy routing as desired. Hopefully v5 is the charm; my e-waste can is getting full. ==================== Signed-off-by: -
David Ahern authored
Add l3mdev rule per address family when the first VRF device is created. The rules are installed with a default preference of 1000. Users can replace the default rule as desired. Signed-off-by:
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David Ahern authored
Currently, VRFs require 1 oif and 1 iif rule per address family per VRF. As the number of VRF devices increases it brings scalability issues with the increasing rule list. All of the VRF rules have the same format with the exception of the specific table id to direct the lookup. Since the table id is available from the oif or iif in the loopup, the VRF rules can be consolidated to a single rule that pulls the table from the VRF device. This patch introduces a new rule attribute l3mdev. The l3mdev rule means the table id used for the lookup is pulled from the L3 master device (e.g., VRF) rather than being statically defined. With the l3mdev rule all of the basic VRF FIB rules are reduced to 1 l3mdev rule per address family (IPv4 and IPv6). If an admin wishes to insert higher priority rules for specific VRFs those rules will co-exist with the l3mdev rule. This capability means current VRF scripts will co-exist with this new simpler implementation. Currently, the rules list for both ipv4 and ipv6 look like this: $ ip ru ls 1000: from all oif vrf1 lookup 1001 1000: from all iif vrf1 lookup 1001 1000: from all oif vrf2 lookup 1002 1000: from all iif vrf2 lookup 1002 1000: from all oif vrf3 lookup 1003 1000: from all iif vrf3 lookup 1003 1000: from all oif vrf4 lookup 1004 1000: from all iif vrf4 lookup 1004 1000: from all oif vrf5 lookup 1005 1000: from all iif vrf5 lookup 1005 1000: from all oif vrf6 lookup 1006 1000: from all iif vrf6 lookup 1006 1000: from all oif vrf7 lookup 1007 1000: from all iif vrf7 lookup 1007 1000: from all oif vrf8 lookup 1008 1000: from all iif vrf8 lookup 1008 ... 32765: from all lookup local 32766: from all lookup main 32767: from all lookup default With the l3mdev rule the list is just the following regardless of the number of VRFs: $ ip ru ls 1000: from all lookup [l3mdev table] 32765: from all lookup local 32766: from all lookup main 32767: from all lookup default (Note: the above pretty print of the rule is based on an iproute2 prototype. Actual verbage may change) Signed-off-by: -
David S. Miller authored
Jon Maloy says: ==================== tipc: two small fixes We fix a couple of rarely seen anomalies discovered during testing. ==================== Signed-off-by: -
Jon Paul Maloy authored
The node keepalive interval is recalculated at each timer expiration to catch any changes in the link tolerance, and stored in a field in struct tipc_node. We use jiffies as unit for the stored value. This is suboptimal, because it makes the calculation unnecessary complex, including two unit conversions. The conversions also lead to a rounding error that causes the link "abort limit" to be 3 in the normal case, instead of 4, as intended. This again leads to unnecessary link resets when the network is pushed close to its limit, e.g., in an environment with hundreds of nodes or namesapces. In this commit, we do instead let the keepalive value be calculated and stored in milliseconds, so that there is only one conversion and the rounding error is eliminated. We also remove a redundant "keepalive" field in struct tipc_link. This is remnant from the previous implementation. Acked-by:
Ying Xue <ying.xue@windriver.com> Signed-off-by:
Jon Maloy <jon.maloy@ericsson.com> Signed-off-by:
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Jon Paul Maloy authored
commit 88e8ac70 ("tipc: reduce transmission rate of reset messages when link is down") revealed a flaw in the node FSM, as defined in the log of commit 66996b6c ("tipc: extend node FSM"). We see the following scenario: 1: Node B receives a RESET message from node A before its link endpoint is fully up, i.e., the node FSM is in state SELF_UP_PEER_COMING. This event will not change the node FSM state, but the (distinct) link FSM will move to state RESETTING. 2: As an effect of the previous event, the local endpoint on B will declare node A lost, and post the event SELF_DOWN to the its node FSM. This moves the FSM state to SELF_DOWN_PEER_LEAVING, meaning that no messages will be accepted from A until it receives another RESET message that confirms that A's endpoint has been reset. This is wasteful, since we know this as a fact already from the first received RESET, but worse is that the link instance's FSM has not wasted this information, but instead moved on to state ESTABLISHING, meaning that it repeatedly sends out ACTIVATE messages to the reset peer A. 3: Node A will receive one of the ACTIVATE messages, move its link FSM to state ESTABLISHED, and start repeatedly sending out STATE messages to node B. 4: Node B will consistently drop these messages, since it can only accept accept a RESET according to its node FSM. 5: After four lost STATE messages node A will reset its link and start repeatedly sending out RESET messages to B. 6: Because of the reduced send rate for RESET messages, it is very likely that A will receive an ACTIVATE (which is sent out at a much higher frequency) before it gets the chance to send a RESET, and A may hence quickly move back to state ESTABLISHED and continue sending out STATE messages, which will again be dropped by B. 7: GOTO 5. 8: After having repeated the cycle 5-7 a number of times, node A will by chance get in between with sending a RESET, and the situation is resolved. Unfortunately, we have seen that it may take a substantial amount of time before this vicious loop is broken, sometimes in the order of minutes. We correct this by making a small correction to the node FSM: When a node in state SELF_UP_PEER_COMING receives a SELF_DOWN event, it now moves directly back to state SELF_DOWN_PEER_DOWN, instead of as now SELF_DOWN_PEER_LEAVING. This is logically consistent, since we don't need to wait for RESET confirmation from of an endpoint that we alread know has been reset. It also means that node B in the scenario above will not be dropping incoming STATE messages, and the link can come up immediately. Finally, a symmetry comparison reveals that the FSM has a similar error when receiving the event PEER_DOWN in state PEER_UP_SELF_COMING. Instead of moving to PERR_DOWN_SELF_LEAVING, it should move directly to SELF_DOWN_PEER_DOWN. Although we have never seen any negative effect of this logical error, we choose fix this one, too. The node FSM looks as follows after those changes: +----------------------------------------+ | PEER_DOWN_EVT| | | +------------------------+----------------+ | |SELF_DOWN_EVT | | | | | | | | +-----------+ +-----------+ | | |NODE_ | |NODE_ | | | +----------|FAILINGOVER|<---------|SYNCHING |-----------+ | | |SELF_ +-----------+ FAILOVER_+-----------+ PEER_ | | | |DOWN_EVT | A BEGIN_EVT A | DOWN_EVT| | | | | | | | | | | | | | | | | | | | |FAILOVER_ |FAILOVER_ |SYNCH_ |SYNCH_ | | | | |END_EVT |BEGIN_EVT |BEGIN_EVT|END_EVT | | | | | | | | | | | | | | | | | | | | | +--------------+ | | | | | +-------->| SELF_UP_ |<-------+ | | | | +-----------------| PEER_UP |----------------+ | | | | |SELF_DOWN_EVT +--------------+ PEER_DOWN_EVT| | | | | | A A | | | | | | | | | | | | | | PEER_UP_EVT| |SELF_UP_EVT | | | | | | | | | | | V V V | | V V V +------------+ +-----------+ +-----------+ +------------+ |SELF_DOWN_ | |SELF_UP_ | |PEER_UP_ | |PEER_DOWN | |PEER_LEAVING| |PEER_COMING| |SELF_COMING| |SELF_LEAVING| +------------+ +-----------+ +-----------+ +------------+ | | A A | | | | | | | | | SELF_ | |SELF_ |PEER_ |PEER_ | | DOWN_EVT| |UP_EVT |UP_EVT |DOWN_EVT | | | | | | | | | | | | | | | +--------------+ | | |PEER_DOWN_EVT +--->| SELF_DOWN_ |<---+ SELF_DOWN_EVT| +------------------->| PEER_DOWN |<--------------------+ +--------------+ Acked-by:
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David S. Miller authored
Florian Fainelli says: ==================== net: dsa: misc improvements This patch series builds on top of Andrew's "New DSA bind, switches as devices" patch set and does the following: - add a few helper functions/goodies for net/dsa/dsa2.c to be as close as possible from net/dsa/dsa.c in terms of what drivers can expect, in particular the slave MDIO bus and the enabled_port_mask and phy_mii_mask - fix the CPU port ethtools ops to work in a multiple tree setup since we can no longer assume a single tree is supported - make the bcm_sf2 driver register its own MDIO bus, yet assign it to ds->slave_mii_bus for everything to work in net/dsa/slave.c wrt. PHY probing, this is a tad cleaner than what we have now Changes in v2: Most of the previous patches have been dropped to just keep the relevant ones now. Changes in v3: - split the addition of the slave MII bus as a separate patch - properly unwind all operations at the right place and right time (ethtool ops, slave MDIO bus - fixed a few typos here and there Changes in v4: - removed superfluous dst agrument to dsa_cpu_port_ethtool_{setup,restore} ==================== Signed-off-by: -
Florian Fainelli authored
Register a slave MDIO bus which allows us to divert problematic read/writes towards conflicting pseudo-PHY address (30). Do no longer rely on DSA's slave_mii_bus, but instead provide our own implementation which offers more flexibility as to what to do, and when to register it. We need to register it by the time we are able to get access to our memory mapped registers, which is not until drv->setup() time. In order to avoid forward declarations, we need to re-order the function bodies a bit. Reviewed-by:
Andrew Lunn <andrew@lunn.ch> Reviewed-by:
Vivien Didelot <vivien.didelot@savoirfairelinux.com> Signed-off-by:
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Florian Fainelli authored
Now that we can properly support multiple distinct trees in the system, using a global variable: dsa_cpu_port_ethtool_ops is getting clobbered as soon as the second switch tree gets probed, and we don't want that. We need to move this to be dynamically allocated, and since we can't really be comparing addresses anymore to determine first time initialization versus any other times, just move this to dsa.c and dsa2.c where the remainder of the dst/ds initialization happens. The operations teardown restores the master netdev's ethtool_ops to its original ethtool_ops pointer (typically within the Ethernet driver) Signed-off-by:
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Florian Fainelli authored
Add a helper function: dsa_cpu_port_ethtool_init() which initializes a custom ethtool_ops structure with custom DSA ethtool operations for CPU ports. This is a preliminary change to move the initialization outside of net/dsa/slave.c. Reviewed-by:
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Florian Fainelli authored
Mimic what net/dsa/dsa.c does and provide a slave MII bus by default which will be created if the driver implements a phy_read method. Reviewed-by:
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Florian Fainelli authored
Some drivers rely on these two bitmasks to contain the correct values for them to successfully probe and initialize at drv->setup() time, calculate correct values to put in both masks as early as possible in dsa_get_ports_dn(). Reviewed-by:
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Florian Fainelli authored
In case we have multiples trees and switches with the same index, we need to add another discriminating id: the switch tree. Reviewed-by:
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Eric Dumazet authored
"make htmldocs" complains otherwise: .//net/core/gen_stats.c:168: warning: No description found for parameter 'running' .//include/linux/netdevice.h:1867: warning: No description found for parameter 'qdisc_running_key' Fixes: f9eb8aea ("net_sched: transform qdisc running bit into a seqcount") Fixes: edb09eb1 ("net: sched: do not acquire qdisc spinlock in qdisc/class stats dump") Signed-off-by:
kbuild test robot <fengguang.wu@intel.com> Signed-off-by:
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Hariprasad Shenai authored
When in kdump kernel, reduce memory usage by only using a single Queue Set for multiqueue devices. So make netif_get_num_default_rss_queues() return one, when in kdump kernel. Signed-off-by:
Hariprasad Shenai <hariprasad@chelsio.com> Signed-off-by:
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David S. Miller authored
Sudarsana Reddy Kalluru says: ==================== qed/qede support for dcbnl. This series adds the dcbnl functionality to the driver. Patch (1) adds the qed infrastucture for querying/configuring the dcbx parameters. Patch (2) adds the qed infrastructure for dcbnl APIs. And patch (3) adds the qede support for dcbnl. ==================== Signed-off-by: -
Sudarsana Reddy Kalluru authored
This patch adds the interfaces for ieee/cee dcbnl callbacks and registers them with the kernel. Signed-off-by:
Sudarsana Reddy Kalluru <sudarsana.kalluru@qlogic.com> Signed-off-by:
Yuval Mintz <Yuval.Mintz@qlogic.com> Signed-off-by:
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Sudarsana Reddy Kalluru authored
This patch adds the implementation for both cee/ieee dcbnl callbacks by using the qed query/config APIs. Signed-off-by:
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Sudarsana Reddy Kalluru authored
Query API reads the dcbx data from the device shared memory and return it to the caller. The config API configures the user provided dcbx values on the device, and initiates the dcbx negotiation with the peer. Signed-off-by:
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