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Date: Thu, 29 Nov 2018 19:36:44 +0530
From: Venkat Duvvuru <venkatkumar.duvvuru@...adcom.com>
To: Pablo Neira Ayuso <pablo@...filter.org>, netdev@...r.kernel.org
Cc: davem@...emloft.net, thomas.lendacky@....com, f.fainelli@...il.com,
ariel.elior@...ium.com, Michael Chan <michael.chan@...adcom.com>,
santosh@...lsio.com, madalin.bucur@....com,
yisen.zhuang@...wei.com, salil.mehta@...wei.com,
jeffrey.t.kirsher@...el.com, tariqt@...lanox.com,
saeedm@...lanox.com, jiri@...lanox.com, idosch@...lanox.com,
jakub.kicinski@...ronome.com, peppe.cavallaro@...com,
grygorii.strashko@...com, andrew@...n.ch,
vivien.didelot@...oirfairelinux.com, alexandre.torgue@...com,
joabreu@...opsys.com, linux-net-drivers@...arflare.com,
ganeshgr@...lsio.com, ogerlitz@...lanox.com,
Manish.Chopra@...ium.com, marcelo.leitner@...il.com
Subject: RE: [PATCH net-next,v4 05/12] flow_offload: add statistics retrieval
infrastructure and use it
> -----Original Message-----
> From: netdev-owner@...r.kernel.org [mailto:netdev-
> owner@...r.kernel.org] On Behalf Of Pablo Neira Ayuso
> Sent: Thursday, November 29, 2018 7:52 AM
> To: netdev@...r.kernel.org
> Cc: davem@...emloft.net; thomas.lendacky@....com;
> f.fainelli@...il.com; ariel.elior@...ium.com; michael.chan@...adcom.com;
> santosh@...lsio.com; madalin.bucur@....com;
> yisen.zhuang@...wei.com; salil.mehta@...wei.com;
> jeffrey.t.kirsher@...el.com; tariqt@...lanox.com; saeedm@...lanox.com;
> jiri@...lanox.com; idosch@...lanox.com; jakub.kicinski@...ronome.com;
> peppe.cavallaro@...com; grygorii.strashko@...com; andrew@...n.ch;
> vivien.didelot@...oirfairelinux.com; alexandre.torgue@...com;
> joabreu@...opsys.com; linux-net-drivers@...arflare.com;
> ganeshgr@...lsio.com; ogerlitz@...lanox.com;
> Manish.Chopra@...ium.com; marcelo.leitner@...il.com
> Subject: [PATCH net-next,v4 05/12] flow_offload: add statistics
retrieval
> infrastructure and use it
>
> This patch provides the flow_stats structure that acts as container for
> tc_cls_flower_offload, then we can use to restore the statistics on the
> existing TC actions. Hence, tcf_exts_stats_update() is not used from
> drivers anymore.
>
> Signed-off-by: Pablo Neira Ayuso <pablo@...filter.org>
> ---
> v4: rebase.
>
> drivers/net/ethernet/broadcom/bnxt/bnxt_tc.c | 4 ++--
> drivers/net/ethernet/chelsio/cxgb4/cxgb4_tc_flower.c | 6 +++---
> drivers/net/ethernet/mellanox/mlx5/core/en_tc.c | 2 +-
> drivers/net/ethernet/mellanox/mlxsw/spectrum_flower.c | 2 +-
> drivers/net/ethernet/netronome/nfp/flower/offload.c | 5 ++---
> include/net/flow_offload.h | 14
++++++++++++++
> include/net/pkt_cls.h | 1 +
> net/sched/cls_flower.c | 4 ++++
> 8 files changed, 28 insertions(+), 10 deletions(-)
>
> diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt_tc.c
> b/drivers/net/ethernet/broadcom/bnxt/bnxt_tc.c
> index b82143d6cdde..09cd75f54eba 100644
> --- a/drivers/net/ethernet/broadcom/bnxt/bnxt_tc.c
> +++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_tc.c
> @@ -1366,8 +1366,8 @@ static int bnxt_tc_get_flow_stats(struct bnxt *bp,
> lastused = flow->lastused;
> spin_unlock(&flow->stats_lock);
>
> - tcf_exts_stats_update(tc_flow_cmd->exts, stats.bytes,
> stats.packets,
> - lastused);
> + flow_stats_update(&tc_flow_cmd->stats, stats.bytes, stats.packets,
> + lastused);
> return 0;
> }
>
> diff --git a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_tc_flower.c
> b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_tc_flower.c
> index 39c5af5dad3d..8a2d66ee1d7b 100644
> --- a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_tc_flower.c
> +++ b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_tc_flower.c
> @@ -807,9 +807,9 @@ int cxgb4_tc_flower_stats(struct net_device *dev,
> if (ofld_stats->packet_count != packets) {
> if (ofld_stats->prev_packet_count != packets)
> ofld_stats->last_used = jiffies;
> - tcf_exts_stats_update(cls->exts, bytes - ofld_stats-
> >byte_count,
> - packets - ofld_stats->packet_count,
> - ofld_stats->last_used);
> + flow_stats_update(&cls->stats, bytes - ofld_stats-
> >byte_count,
> + packets - ofld_stats->packet_count,
> + ofld_stats->last_used);
>
> ofld_stats->packet_count = packets;
> ofld_stats->byte_count = bytes;
> diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c
> b/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c
> index afabd5e530f0..6bc5c57bda9d 100644
> --- a/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c
> +++ b/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c
> @@ -3225,7 +3225,7 @@ int mlx5e_stats_flower(struct mlx5e_priv *priv,
>
> mlx5_fc_query_cached(counter, &bytes, &packets, &lastuse);
>
> - tcf_exts_stats_update(f->exts, bytes, packets, lastuse);
> + flow_stats_update(&f->stats, bytes, packets, lastuse);
>
> return 0;
> }
> diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_flower.c
> b/drivers/net/ethernet/mellanox/mlxsw/spectrum_flower.c
> index e6c4c672b1ca..60900e53243b 100644
> --- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_flower.c
> +++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_flower.c
> @@ -460,7 +460,7 @@ int mlxsw_sp_flower_stats(struct mlxsw_sp
> *mlxsw_sp,
> if (err)
> goto err_rule_get_stats;
>
> - tcf_exts_stats_update(f->exts, bytes, packets, lastuse);
> + flow_stats_update(&f->stats, bytes, packets, lastuse);
>
> mlxsw_sp_acl_ruleset_put(mlxsw_sp, ruleset);
> return 0;
> diff --git a/drivers/net/ethernet/netronome/nfp/flower/offload.c
> b/drivers/net/ethernet/netronome/nfp/flower/offload.c
> index 708331234908..524b9ae1a639 100644
> --- a/drivers/net/ethernet/netronome/nfp/flower/offload.c
> +++ b/drivers/net/ethernet/netronome/nfp/flower/offload.c
> @@ -532,9 +532,8 @@ nfp_flower_get_stats(struct nfp_app *app, struct
> net_device *netdev,
> ctx_id = be32_to_cpu(nfp_flow->meta.host_ctx_id);
>
> spin_lock_bh(&priv->stats_lock);
> - tcf_exts_stats_update(flow->exts, priv->stats[ctx_id].bytes,
> - priv->stats[ctx_id].pkts,
> - priv->stats[ctx_id].used);
> + flow_stats_update(&flow->stats, priv->stats[ctx_id].bytes,
> + priv->stats[ctx_id].pkts,
priv->stats[ctx_id].used);
>
> priv->stats[ctx_id].pkts = 0;
> priv->stats[ctx_id].bytes = 0;
> diff --git a/include/net/flow_offload.h b/include/net/flow_offload.h
> index dabc819b6cc9..040c092c000a 100644
> --- a/include/net/flow_offload.h
> +++ b/include/net/flow_offload.h
> @@ -179,4 +179,18 @@ static inline bool flow_rule_match_key(const struct
> flow_rule *rule,
> return dissector_uses_key(rule->match.dissector, key);
> }
>
> +struct flow_stats {
> + u64 pkts;
> + u64 bytes;
> + u64 lastused;
> +};
> +
> +static inline void flow_stats_update(struct flow_stats *flow_stats,
> + u64 pkts, u64 bytes, u64 lastused)
> +{
> + flow_stats->pkts = pkts;
> + flow_stats->bytes = bytes;
> + flow_stats->lastused = lastused;
> +}
This API is taking packets as 2nd parameter and bytes as 3rd parameter.
However, all the callers are passing them in reverse.
> +
> #endif /* _NET_FLOW_OFFLOAD_H */
> diff --git a/include/net/pkt_cls.h b/include/net/pkt_cls.h
> index abb035f84321..a08c06e383db 100644
> --- a/include/net/pkt_cls.h
> +++ b/include/net/pkt_cls.h
> @@ -767,6 +767,7 @@ struct tc_cls_flower_offload {
> enum tc_fl_command command;
> unsigned long cookie;
> struct flow_rule *rule;
> + struct flow_stats stats;
> struct tcf_exts *exts;
> u32 classid;
> };
> diff --git a/net/sched/cls_flower.c b/net/sched/cls_flower.c
> index 8898943b8ee6..b88cf29aff7b 100644
> --- a/net/sched/cls_flower.c
> +++ b/net/sched/cls_flower.c
> @@ -432,6 +432,10 @@ static void fl_hw_update_stats(struct tcf_proto
*tp,
> struct cls_fl_filter *f)
>
> tc_setup_cb_call(block, &f->exts, TC_SETUP_CLSFLOWER,
> &cls_flower, false);
> +
> + tcf_exts_stats_update(&f->exts, cls_flower.stats.bytes,
> + cls_flower.stats.pkts,
> + cls_flower.stats.lastused);
> }
>
> static bool __fl_delete(struct tcf_proto *tp, struct cls_fl_filter *f,
> --
> 2.11.0
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