From 564c6d727aca31735662b944311efda0d9465820 Mon Sep 17 00:00:00 2001 From: Ido Schimmel Date: Wed, 17 Oct 2018 08:53:05 +0000 Subject: mlxsw: spectrum_fid: Add APIs to lookup FID without creating it Current APIs only allow looking for a FID and creating it in case it does not exist. With VxLAN, in case the bridge to which the VxLAN device was enslaved does not already have a corresponding FID, then it means that something went wrong that we need to be aware of. Add an API to look up a FID, but without creating it in order to catch above-mentioned situation. Signed-off-by: Ido Schimmel Reviewed-by: Petr Machata Signed-off-by: David S. Miller --- drivers/net/ethernet/mellanox/mlxsw/spectrum_fid.c | 45 +++++++++++++++++++--- 1 file changed, 40 insertions(+), 5 deletions(-) (limited to 'drivers/net/ethernet/mellanox/mlxsw/spectrum_fid.c') diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_fid.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum_fid.c index 7e07cf368e90..0ba3d90d4632 100644 --- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_fid.c +++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_fid.c @@ -113,6 +113,19 @@ static const int *mlxsw_sp_packet_type_sfgc_types[] = { [MLXSW_SP_FLOOD_TYPE_MC] = mlxsw_sp_sfgc_mc_packet_types, }; +struct mlxsw_sp_fid *mlxsw_sp_fid_lookup_by_vni(struct mlxsw_sp *mlxsw_sp, + __be32 vni) +{ + struct mlxsw_sp_fid *fid; + + fid = rhashtable_lookup_fast(&mlxsw_sp->fid_core->vni_ht, &vni, + mlxsw_sp_fid_vni_ht_params); + if (fid) + fid->ref_count++; + + return fid; +} + int mlxsw_sp_fid_vni(const struct mlxsw_sp_fid *fid, __be32 *vni) { if (!fid->vni_valid) @@ -879,14 +892,12 @@ static const struct mlxsw_sp_fid_family *mlxsw_sp_fid_family_arr[] = { [MLXSW_SP_FID_TYPE_DUMMY] = &mlxsw_sp_fid_dummy_family, }; -static struct mlxsw_sp_fid *mlxsw_sp_fid_get(struct mlxsw_sp *mlxsw_sp, - enum mlxsw_sp_fid_type type, - const void *arg) +static struct mlxsw_sp_fid *mlxsw_sp_fid_lookup(struct mlxsw_sp *mlxsw_sp, + enum mlxsw_sp_fid_type type, + const void *arg) { struct mlxsw_sp_fid_family *fid_family; struct mlxsw_sp_fid *fid; - u16 fid_index; - int err; fid_family = mlxsw_sp->fid_core->fid_family_arr[type]; list_for_each_entry(fid, &fid_family->fids_list, list) { @@ -896,6 +907,23 @@ static struct mlxsw_sp_fid *mlxsw_sp_fid_get(struct mlxsw_sp *mlxsw_sp, return fid; } + return NULL; +} + +static struct mlxsw_sp_fid *mlxsw_sp_fid_get(struct mlxsw_sp *mlxsw_sp, + enum mlxsw_sp_fid_type type, + const void *arg) +{ + struct mlxsw_sp_fid_family *fid_family; + struct mlxsw_sp_fid *fid; + u16 fid_index; + int err; + + fid = mlxsw_sp_fid_lookup(mlxsw_sp, type, arg); + if (fid) + return fid; + + fid_family = mlxsw_sp->fid_core->fid_family_arr[type]; fid = kzalloc(fid_family->fid_size, GFP_KERNEL); if (!fid) return ERR_PTR(-ENOMEM); @@ -955,6 +983,13 @@ struct mlxsw_sp_fid *mlxsw_sp_fid_8021d_get(struct mlxsw_sp *mlxsw_sp, return mlxsw_sp_fid_get(mlxsw_sp, MLXSW_SP_FID_TYPE_8021D, &br_ifindex); } +struct mlxsw_sp_fid *mlxsw_sp_fid_8021d_lookup(struct mlxsw_sp *mlxsw_sp, + int br_ifindex) +{ + return mlxsw_sp_fid_lookup(mlxsw_sp, MLXSW_SP_FID_TYPE_8021D, + &br_ifindex); +} + struct mlxsw_sp_fid *mlxsw_sp_fid_rfid_get(struct mlxsw_sp *mlxsw_sp, u16 rif_index) { -- cgit v1.2.3-59-g8ed1b