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| author |   Hadar Hen Zion <hadarh@mellanox.com> | 2017-02-24 12:16:33 +0200 |
|---|---|---|
| committer |   Saeed Mahameed <saeedm@mellanox.com> | 2017-04-30 16:03:14 +0300 |
| commit | f6dfb4c3f2161c23ab2939dd1b5f133dcdf147c6 (patch) | |
| tree | 6cb4c342e3697ab32a22965834c852ceb29eefe6 /drivers/net/ethernet/mellanox/mlx5/core/en_rep.h | |
| parent | net/mlx5e: Add support to neighbour update flow (diff) | |
| download | linux-dev-f6dfb4c3f2161c23ab2939dd1b5f133dcdf147c6.tar.xz linux-dev-f6dfb4c3f2161c23ab2939dd1b5f133dcdf147c6.zip | |
net/mlx5e: Update neighbour 'used' state using HW flow rules counters
When IP tunnel encapsulation rules are offloaded, the kernel can't see
the traffic of the offloaded flow. The neighbour for the IP tunnel
destination of the offloaded flow can mistakenly become STALE and
deleted by the kernel since its 'used' value wasn't changed.
To make sure that a neighbour which is used by the HW won't become
STALE, we proactively update the neighbour 'used' value every
DELAY_PROBE_TIME period, when packets were matched and counted by the HW
for one of the tunnel encap flows related to this neighbour.
The periodic task that updates the used neighbours is scheduled when a
tunnel encap rule is successfully offloaded into HW and keeps re-scheduling
itself as long as the representor's neighbours list isn't empty.
Add, remove, lookup and status change operations done over the
representor's neighbours list or the neighbour hash entry encaps list
are all serialized by RTNL lock.
Signed-off-by: Hadar Hen Zion <hadarh@mellanox.com>
Reviewed-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Diffstat (limited to 'drivers/net/ethernet/mellanox/mlx5/core/en_rep.h')
| -rw-r--r-- | drivers/net/ethernet/mellanox/mlx5/core/en_rep.h | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_rep.h b/drivers/net/ethernet/mellanox/mlx5/core/en_rep.h index e4d0ea5246fd..a0a1a7a1d6c0 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/en_rep.h +++ b/drivers/net/ethernet/mellanox/mlx5/core/en_rep.h @@ -48,6 +48,8 @@ struct mlx5e_neigh_update_table { /* protect lookup/remove operations */ spinlock_t encap_lock; struct notifier_block netevent_nb; + struct delayed_work neigh_stats_work; + unsigned long min_interval; /* jiffies */ }; struct mlx5e_rep_priv { @@ -61,6 +63,7 @@ struct mlx5e_neigh { __be32 v4; struct in6_addr v6; } dst_ip; + int family; }; struct mlx5e_neigh_hash_entry { @@ -87,6 +90,12 @@ struct mlx5e_neigh_hash_entry { * it's used by the neigh notification call. */ refcount_t refcnt; + + /* Save the last reported time offloaded trafic pass over one of the + * neigh hash entry flows. Use it to periodically update the neigh + * 'used' value and avoid neigh deleting by the kernel. + */ + unsigned long reported_lastuse; }; enum { @@ -131,4 +140,6 @@ int mlx5e_rep_encap_entry_attach(struct mlx5e_priv *priv, void mlx5e_rep_encap_entry_detach(struct mlx5e_priv *priv, struct mlx5e_encap_entry *e); +void mlx5e_rep_queue_neigh_stats_work(struct mlx5e_priv *priv); + #endif /* __MLX5E_REP_H__ */ |