| Message ID | 4cc22b59374344b666221f792a28bec597833047.1615387786.git.petrm@nvidia.com (mailing list archive) |
|---|---|
| State | Superseded |
| Delegated to: | Netdev Maintainers |
| Headers | show |
| Series | nexthop: Resilient next-hop groups | expand |
| Context | Check | Description |
|---|---|---|
| netdev/cover_letter | success | Link |
| netdev/fixes_present | success | Link |
| netdev/patch_count | success | Link |
| netdev/tree_selection | success | Clearly marked for net-next |
| netdev/subject_prefix | success | Link |
| netdev/cc_maintainers | warning | 1 maintainers not CCed: yoshfuji@linux-ipv6.org |
| netdev/source_inline | success | Was 0 now: 0 |
| netdev/verify_signedoff | success | Link |
| netdev/module_param | success | Was 0 now: 0 |
| netdev/build_32bit | success | Errors and warnings before: 636 this patch: 636 |
| netdev/kdoc | success | Errors and warnings before: 0 this patch: 0 |
| netdev/verify_fixes | success | Link |
| netdev/checkpatch | success | total: 0 errors, 0 warnings, 0 checks, 48 lines checked |
| netdev/build_allmodconfig_warn | success | Errors and warnings before: 661 this patch: 661 |
| netdev/header_inline | success | Link |
On 3/10/21 8:02 AM, Petr Machata wrote: > From: Ido Schimmel <idosch@nvidia.com> > > Add a function that can be called by device drivers to set "offload" or > "trap" indication on nexthop buckets following nexthop notifications and > other changes such as a neighbour becoming invalid. > > Signed-off-by: Ido Schimmel <idosch@nvidia.com> > Reviewed-by: Petr Machata <petrm@nvidia.com> > Signed-off-by: Petr Machata <petrm@nvidia.com> > --- > > Notes: > v1 (changes since RFC): > - u32 -> u16 for bucket counts / indices > > include/net/nexthop.h | 2 ++ > net/ipv4/nexthop.c | 34 ++++++++++++++++++++++++++++++++++ > 2 files changed, 36 insertions(+) > Reviewed-by: David Ahern <dsahern@kernel.org>
diff --git a/include/net/nexthop.h b/include/net/nexthop.h index fd3c0debe8bf..685f208d26b5 100644 --- a/include/net/nexthop.h +++ b/include/net/nexthop.h @@ -220,6 +220,8 @@ int register_nexthop_notifier(struct net *net, struct notifier_block *nb, struct netlink_ext_ack *extack); int unregister_nexthop_notifier(struct net *net, struct notifier_block *nb); void nexthop_set_hw_flags(struct net *net, u32 id, bool offload, bool trap); +void nexthop_bucket_set_hw_flags(struct net *net, u32 id, u16 bucket_index, + bool offload, bool trap); /* caller is holding rcu or rtnl; no reference taken to nexthop */ struct nexthop *nexthop_find_by_id(struct net *net, u32 id); diff --git a/net/ipv4/nexthop.c b/net/ipv4/nexthop.c index 8b06aafc2e9e..1fce4ff39390 100644 --- a/net/ipv4/nexthop.c +++ b/net/ipv4/nexthop.c @@ -3072,6 +3072,40 @@ void nexthop_set_hw_flags(struct net *net, u32 id, bool offload, bool trap) } EXPORT_SYMBOL(nexthop_set_hw_flags); +void nexthop_bucket_set_hw_flags(struct net *net, u32 id, u16 bucket_index, + bool offload, bool trap) +{ + struct nh_res_table *res_table; + struct nh_res_bucket *bucket; + struct nexthop *nexthop; + struct nh_group *nhg; + + rcu_read_lock(); + + nexthop = nexthop_find_by_id(net, id); + if (!nexthop || !nexthop->is_group) + goto out; + + nhg = rcu_dereference(nexthop->nh_grp); + if (!nhg->resilient) + goto out; + + if (bucket_index >= nhg->res_table->num_nh_buckets) + goto out; + + res_table = rcu_dereference(nhg->res_table); + bucket = &res_table->nh_buckets[bucket_index]; + bucket->nh_flags &= ~(RTNH_F_OFFLOAD | RTNH_F_TRAP); + if (offload) + bucket->nh_flags |= RTNH_F_OFFLOAD; + if (trap) + bucket->nh_flags |= RTNH_F_TRAP; + +out: + rcu_read_unlock(); +} +EXPORT_SYMBOL(nexthop_bucket_set_hw_flags); + static void __net_exit nexthop_net_exit(struct net *net) { rtnl_lock();