- 08 Apr, 2019 35 commits
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Huazhong Tan authored
hns3_client_stop() should be called after unregister_netdev(), otherwise the ongoing reset task may start the client just after it. Fixes: a6d818e3 ("net: hns3: Add vport alive state checking support") Signed-off-by:
Huazhong Tan <tanhuazhong@huawei.com> Signed-off-by:
Peng Li <lipeng321@huawei.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Huazhong Tan authored
If a vport is not alive, it is unnecessary to notify it to reset before PF asserting a reset. So before inform vport to reset, we need to check its alive state firstly. Fixes: aa5c4f17 ("net: hns3: add reset handling for VF when doing PF reset") Signed-off-by:
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Huazhong Tan authored
When reinitializing, the vport alive state needs to be set up. Signed-off-by:
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Huazhong Tan authored
When resetting, the vport alive state should be set to default, otherwise the alive state of the vport whose driver not running is wrong before the timer to check it out. Fixes: a6d818e3 ("net: hns3: Add vport alive state checking support") Signed-off-by:
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David S. Miller authored
David Ahern says: ==================== ipv4: Enable support for IPv6 gateway with IPv4 routes Last set of three with the end goal of enabling IPv6 gateways with IPv4 routes. This set adds fib6_nh_init and release to the IPv6 stubs, and adds neighbor helpers that IPv4 code invokes to resolve an IPv6 address. When using an IPv6 neighbor entry the hh_cache is bypassed as it contains the wrong ethernet header for an IPv4 packet. The nh_common nhc_has_gw was a temporary field used to convert existing code from fib{6}_nh to fib_nh_common. That field is now converted to nhc_gw_family to differentiate the address family of the gateway entry as opposed to the address family of the container of fib_nh_common. Existing code for rtable and fib_config is refactored to prepare for a v6 address and then support is added. From there various miscellaneous functions are updated to handle a v6 gateway - from validating the v6 address to lookups in bpf code to verifying the nexthop state. Offload drivers - mlxsw and rocker - are modified to detect the v6 gateway and reject the route as 'unsupported'. e.g., $ ip ro add 172.16.101.0/24 via inet6 fe80::202:ff:fe00:b dev swp1s0 Error: mlxsw_spectrum: IPv6 gateway with IPv4 route is not supported. This can be removed in time once support is added to each. With the infrastructure changes in place, patch 17 enables it by adding support for RTA_VIA to IPv4. RTA_VIA can be used for IPv4 addresses as well. Only one of RTA_VIA and RTA_GATEWAY can be passed in a request. Patch 18 adds a few test cases to fib_tests.sh. v2 - comments from Ido - fixed typos as noted and updated messages - add commit message to patch 1 - In patch 9, ipv4: Add fib_check_nh_v6_gw, moved the call to fib6_nh_release under the 'if (!err)' check as the intention is that release should not be called if init fails. ==================== Signed-off-by: -
David Ahern authored
Add tests for ipv6 gateway with ipv4 route. Tests include basic single path with ping to verify connectivity and multipath. Signed-off-by:
David Ahern <dsahern@gmail.com> Signed-off-by:
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David Ahern authored
Add support for RTA_VIA and allow an IPv6 nexthop for v4 routes: $ ip ro add 172.16.1.0/24 via inet6 2001:db8::1 dev eth0 $ ip ro ls ... 172.16.1.0/24 via inet6 2001:db8::1 dev eth0 For convenience and simplicity, userspace can use RTA_VIA to specify AF_INET or AF_INET6 gateway. The common fib_nexthop_info dump function compares the gateway address family to the nh_common family to know if the gateway should be encoded as RTA_VIA or RTA_GATEWAY. Signed-off-by:
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David Ahern authored
Until support is added to the offload drivers, they need to be able to reject routes with an IPv6 gateway. To that end add a flag to fib_info that indicates if any fib_nh has a v6 gateway. The flag allows the drivers to efficiently know the use of a v6 gateway without walking all fib_nh tied to a fib_info each time a route is added. Update mlxsw and rocker to reject the routes with extack message as to why. Signed-off-by:
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David Ahern authored
Update fib_good_nh to handle an ipv6 gateway. Signed-off-by:
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David Ahern authored
Update fib_detect_death to handle an ipv6 gateway. Signed-off-by:
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David Ahern authored
Update ipv4_confirm_neigh to handle an ipv6 gateway. Signed-off-by:
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David Ahern authored
Update bpf_ipv4_fib_lookup to handle an ipv6 gateway. Signed-off-by:
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David Ahern authored
A common theme in the output path is looking up a neigh entry for a nexthop, either the gateway in an rtable or a fallback to the daddr in the skb: nexthop = (__force u32)rt_nexthop(rt, ip_hdr(skb)->daddr); neigh = __ipv4_neigh_lookup_noref(dev, nexthop); if (unlikely(!neigh)) neigh = __neigh_create(&arp_tbl, &nexthop, dev, false); To allow the nexthop to be an IPv6 address we need to consider the family of the nexthop and then call __ipv{4,6}_neigh_lookup_noref based on it. To make this simpler, add a ip_neigh_gw4 helper similar to ip_neigh_gw6 added in an earlier patch which handles: neigh = __ipv4_neigh_lookup_noref(dev, nexthop); if (unlikely(!neigh)) neigh = __neigh_create(&arp_tbl, &nexthop, dev, false); And then add a second one, ip_neigh_for_gw, that calls either ip_neigh_gw4 or ip_neigh_gw6 based on the address family of the gateway. Update the output paths in the VRF driver and core v4 code to use ip_neigh_for_gw simplifying the family based lookup and making both ready for a v6 nexthop. ipv4_neigh_lookup has a different need - the potential to resolve a passed in address in addition to any gateway in the rtable or skb. Since this is a one-off, add ip_neigh_gw4 and ip_neigh_gw6 diectly. The difference between __neigh_create used by the helpers and neigh_create called by ipv4_neigh_lookup is taking a refcount, so add rcu_read_lock_bh and bump the refcnt on the neigh entry. Signed-off-by: -
David Ahern authored
A later patch allows an IPv6 gateway with an IPv4 route. The neighbor entry will exist in the v6 ndisc table and the cached header will contain the ipv6 protocol which is wrong for an IPv4 packet. For an IPv4 packet to use the v6 neighbor entry, neigh_output needs to skip the cached header and just use the output callback for the neigh entry. A future patchset can look at expanding the hh_cache to handle 2 protocols. For now, IPv6 gateways with an IPv4 route will take the extra overhead of generating the header. Signed-off-by:
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David Ahern authored
Add helper to use fib6_nh_init to validate a nexthop spec with an IPv6 gateway. Signed-off-by:
Ido Schimmel <idosch@mellanox.com> Signed-off-by:
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David Ahern authored
fib_check_nh is currently huge covering multiple uses cases - device only, device + gateway, and device + gateway with ONLINK. The next patch adds validation checks for IPv6 which only further complicates it. So, break fib_check_nh into 2 helpers - one for gateway validation and one for device only. Signed-off-by:
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David Ahern authored
Add support for an IPv6 gateway to fib_config. Since a gateway is either IPv4 or IPv6, make it a union with fc_gw4 where fc_gw_family decides which address is in use. Update current checks on family and gw4 to handle ipv6 as well. Signed-off-by:
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David Ahern authored
Add support for an IPv6 gateway to rtable. Since a gateway is either IPv4 or IPv6, make it a union with rt_gw4 where rt_gw_family decides which address is in use. When dumping the route data, encode an ipv6 nexthop using RTA_VIA. Signed-off-by:
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David Ahern authored
Similar to rtable, fib_config needs to allow the gateway to be either an IPv4 or an IPv6 address. To that end, rename fc_gw to fc_gw4 to mean an IPv4 address and add fc_gw_family. Checks on 'is a gateway set' are changed to see if fc_gw_family is set. In the process prepare the code for a fc_gw_family == AF_INET6. Signed-off-by:
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David Ahern authored
To allow the gateway to be either an IPv4 or IPv6 address, remove rt_uses_gateway from rtable and replace with rt_gw_family. If rt_gw_family is set it implies rt_uses_gateway. Rename rt_gateway to rt_gw4 to represent the IPv4 version. Signed-off-by:
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David Ahern authored
Allow the gateway in a fib_nh_common to be from a different address family than the outer fib{6}_nh. To that end, replace nhc_has_gw with nhc_gw_family and update users of nhc_has_gw to check nhc_gw_family. Now nhc_family is used to know if the nh_common is part of a fib_nh or fib6_nh (used for container_of to get to route family specific data), and nhc_gw_family represents the address family for the gateway. Signed-off-by: -
David Ahern authored
Add ipv6 helpers to handle ndisc references via the stub. Update bpf_ipv6_fib_lookup to use __ipv6_neigh_lookup_noref_stub instead of the open code ___neigh_lookup_noref with the stub. Signed-off-by:
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David Ahern authored
Add fib6_nh_init and fib6_nh_release to ipv6_stubs. If fib6_nh_init fails, callers should not invoke fib6_nh_release, so there is no reason to have a dummy stub for the IPv6 is not enabled case. Signed-off-by:
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Heiner Kallweit authored
genphy_read_status() so far checks phydev->supported, not the actual PHY capabilities. This can make a difference if the supported speeds have been limited by of_set_phy_supported() or phy_set_max_speed(). It seems that this issue only affects the link partner advertisements as displayed by ethtool. Also this patch wouldn't apply to older kernels because linkmode bitmaps have been introduced recently. Therefore net-next. Signed-off-by:
Heiner Kallweit <hkallweit1@gmail.com> Reviewed-by:
Florian Fainelli <f.fainelli@gmail.com> Signed-off-by:
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git://git.kernel.org/pub/scm/linux/kernel/git/saeed/linuxDavid S. Miller authored
Saeed Mamameed says: ==================== mlx5-updates-2019-04-02 This series provides misc updates to mlx5 driver 1) Aya Levin (1): Handle event of power detection in the PCIE slot 2) Eli Britstein (6): Some TC VLAN related updates and fixes to the previous VLAN modify action support patchset. Offload TC e-switch rules with egress/ingress VLAN devices 3) Max Gurtovoy (1): Fix double mutex initialization in esiwtch.c 4) Tariq Toukan (3): Misc small updates A write memory barrier is sufficient in EQ ci update Obsolete param field holding a constant value Unify logic of MTU boundaries 5) Tonghao Zhang (4): Misc updates to en_tc.c Make the log friendly when decapsulation offload not supported Remove 'parse_attr' argument in parse_tc_fdb_actions() Deletes unnecessary setting of esw_attr->parse_attr Return -EOPNOTSUPP when attempting to offload an unsupported action ==================== Signed-off-by: -
Vishal Kulkarni authored
During hash filter programming, driver needs to return ENOSPC error intead of EAGAIN when TCAM is full. Signed-off-by:
Vishal Kulkarni <vishal@chelsio.com> Signed-off-by:
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Alexandru Ardelean authored
This hook only implements a minimal set of ioctl hooks to be able to access MII regs by using phytool. When using this simple MAC controller, it's pretty difficult to do debugging of the PHY chip without checking MII regs. Signed-off-by:
Alexandru Ardelean <alexandru.ardelean@analog.com> Reviewed-by:
Radhey Shyam Pandey <radhey.shyam.pandey@xilinx.com> Signed-off-by:
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Alexandru Ardelean authored
This set adds a minimal set of ethtool hooks to the driver, which provide a decent amount of link information via ethtool. With this change, running `ethtool ethX` in user-space provides all the neatly-formatted information about the link (what was negotiated, what is advertised, etc). Signed-off-by:
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Paolo Abeni authored
After commit a297569f ("net/udp: do not touch skb->peeked unless really needed") the 'peeked' argument of __skb_try_recv_datagram() and friends is always equal to !!'flags & MSG_PEEK'. Since such argument is really a boolean info, and the callers have already 'flags & MSG_PEEK' handy, we can remove it and clean-up the code a bit. Signed-off-by:
Paolo Abeni <pabeni@redhat.com> Acked-by:
Willem de Bruijn <willemb@google.com> Signed-off-by:
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Vlad Buslov authored
John reports: Recent refactoring of fl_change aims to use the classifier spinlock to avoid the need for rtnl lock. In doing so, the fl_hw_replace_filer() function was moved to before the lock is taken. This can create problems for drivers if duplicate filters are created (commmon in ovs tc offload due to filters being triggered by user-space matches). Drivers registered for such filters will now receive multiple copies of the same rule, each with a different cookie value. This means that the drivers would need to do a full match field lookup to determine duplicates, repeating work that will happen in flower __fl_lookup(). Currently, drivers do not expect to receive duplicate filters. To fix this, verify that filter with same key is not present in flower classifier hash table and insert the new filter to the flower hash table before offloading it to hardware. Implement helper function fl_ht_insert_unique() to atomically verify/insert a filter. This change makes filter visible to fast path at the beginning of fl_change() function, which means it can no longer be freed directly in case of error. Refactor fl_change() error handling code to deallocate the filter with rcu timeout. Fixes: 620da486 ("net: sched: flower: refactor fl_change") Reported-by:
John Hurley <john.hurley@netronome.com> Signed-off-by:
Vlad Buslov <vladbu@mellanox.com> Acked-by:
Jiri Pirko <jiri@mellanox.com> Signed-off-by:
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David S. Miller authored
NeilBrown says: ==================== Convert rhashtable to use bitlocks This series converts rhashtable to use a per-bucket bitlock rather than a separate array of spinlocks. This: reduces memory usage results in slightly fewer memory accesses slightly improves parallelism makes a configuration option unnecessary The main change from previous version is to use a distinct type for the pointer in the bucket which has a bit-lock in it. This helped find two places where rht_ptr() was missed, one in rhashtable_free_and_destroy() in print_ht in the test code. ==================== Signed-off-by: -
NeilBrown authored
Native bit_spin_locks are not tracked by lockdep. The bit_spin_locks used for rhashtable buckets are local to the rhashtable implementation, so there is little opportunity for the sort of misuse that lockdep might detect. However locks are held while a hash function or compare function is called, and if one of these took a lock, a misbehaviour is possible. As it is quite easy to add lockdep support this unlikely possibility seems to be enough justification. So create a lockdep class for bucket bit_spin_lock and attach through a lockdep_map in each bucket_table. Without the 'nested' annotation in rhashtable_rehash_one(), lockdep correctly reports a possible problem as this lock is taken while another bucket lock (in another table) is held. This confirms that the added support works. With the correct nested annotation in place, lockdep reports no problems. Signed-off-by:
NeilBrown <neilb@suse.com> Signed-off-by:
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NeilBrown authored
This patch changes rhashtables to use a bit_spin_lock on BIT(1) of the bucket pointer to lock the hash chain for that bucket. The benefits of a bit spin_lock are: - no need to allocate a separate array of locks. - no need to have a configuration option to guide the choice of the size of this array - locking cost is often a single test-and-set in a cache line that will have to be loaded anyway. When inserting at, or removing from, the head of the chain, the unlock is free - writing the new address in the bucket head implicitly clears the lock bit. For __rhashtable_insert_fast() we ensure this always happens when adding a new key. - even when lockings costs 2 updates (lock and unlock), they are in a cacheline that needs to be read anyway. The cost of using a bit spin_lock is a little bit of code complexity, which I think is quite manageable. Bit spin_locks are sometimes inappropriate because they are not fair - if multiple CPUs repeatedly contend of the same lock, one CPU can easily be starved. This is not a credible situation with rhashtable. Multiple CPUs may want to repeatedly add or remove objects, but they will typically do so at different buckets, so they will attempt to acquire different locks. As we have more bit-locks than we previously had spinlocks (by at least a factor of two) we can expect slightly less contention to go with the slightly better cache behavior and reduced memory consumption. To enhance type checking, a new struct is introduced to represent the pointer plus lock-bit that is stored in the bucket-table. This is "struct rhash_lock_head" and is empty. A pointer to this needs to be cast to either an unsigned lock, or a "struct rhash_head *" to be useful. Variables of this type are most often called "bkt". Previously "pprev" would sometimes point to a bucket, and sometimes a ->next pointer in an rhash_head. As these are now different types, pprev is NULL when it would have pointed to the bucket. In that case, 'blk' is used, together with correct locking protocol. Signed-off-by:
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NeilBrown authored
Rather than returning a pointer to a static nulls, rht_bucket_var() now returns NULL if the bucket doesn't exist. This will make the next patch, which stores a bitlock in the bucket pointer, somewhat cleaner. This change involves introducing __rht_bucket_nested() which is like rht_bucket_nested(), but doesn't provide the static nulls, and changing rht_bucket_nested() to call this and possible provide a static nulls - as is still needed for the non-var case. Signed-off-by:
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NeilBrown authored
nested_table_alloc() relies on the fact that there is at most one spinlock allocated for every slot in the top level nested table, so it is not possible for two threads to try to allocate the same table at the same time. This assumption is a little fragile (it is not explicit) and is unnecessary as cmpxchg() can be used instead. A future patch will replace the spinlocks by per-bucket bitlocks, and then we won't be able to protect the slot pointer with a spinlock. So replace rcu_assign_pointer() with cmpxchg() - which has equivalent barrier properties. If it the cmp fails, free the table that was just allocated. Signed-off-by:
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- 07 Apr, 2019 5 commits
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David S. Miller authored
Murali Karicheri says: ==================== net: hsr: improvements and bug fixes This series has some coding style fixes and other bug fixes. Patch 12/14, I have also done SPDX conversion. Not sure if that is the only thing needed and is correct. So please pay close attention to this patch before merge as I would like to avoid any issue related to licensing applicable for this code. ==================== Signed-off-by: -
Aaron Kramer authored
HSR should forget nodes after configured node forget time expiry based on HSR_NODE_FORGET_TIME. As part of hsr_prune_nodes(), code checks to see if entries are to be flushed out if not heard for longer than forget time. But currently hsr_prune_nodes() is called only once during device creation. Restart the timer at the end of hsr_prune_nodes() so that hsr_prune_nodes() gets called periodically and forgotten entries are removed from node table. Signed-off-by:
Aaron Kramer <a-kramer@ti.com> Signed-off-by:
Murali Karicheri <m-karicheri2@ti.com> Signed-off-by:
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Murali Karicheri authored
This adds a debugfs interface to allow display the nodes learned by the hsr master. Signed-off-by:
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Murali Karicheri authored
Use SPDX-License-Identifier instead of a verbose license text. Signed-off-by:
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Murali Karicheri authored
Add a blank line after function declaration as suggested by checkpatch.pl -f Signed-off-by:
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