[PATCH net-next 14/14] nfp: abm: report correct MQ stats

[Jakub Kicinski]

Report the stat diff to make sure MQ stats add up to child stats.

Signed-off-by: Jakub Kicinski <jakub.kicin...@netronome.com>
Reviewed-by: Dirk van der Merwe <dirk.vanderme...@netronome.com>
---
 drivers/net/ethernet/netronome/nfp/abm/main.c | 24 +++++++++++++++++++
 1 file changed, 24 insertions(+)

diff --git a/drivers/net/ethernet/netronome/nfp/abm/main.c 
b/drivers/net/ethernet/netronome/nfp/abm/main.c
index 21d5af1fb061..1561c2724c26 100644
--- a/drivers/net/ethernet/netronome/nfp/abm/main.c
+++ b/drivers/net/ethernet/netronome/nfp/abm/main.c
@@ -279,6 +279,28 @@ nfp_abm_setup_tc_red(struct net_device *netdev, struct 
nfp_abm_link *alink,
        }
 }
 
+static int
+nfp_abm_mq_stats(struct nfp_abm_link *alink, struct tc_mq_qopt_offload *opt)
+{
+       struct nfp_alink_stats stats;
+       unsigned int i;
+       int err;
+
+       for (i = 0; i < alink->num_qdiscs; i++) {
+               if (alink->qdiscs[i].handle == TC_H_UNSPEC)
+                       continue;
+
+               err = nfp_abm_ctrl_read_q_stats(alink, i, &stats);
+               if (err)
+                       return err;
+
+               nfp_abm_update_stats(&stats, &alink->qdiscs[i].stats,
+                                    &opt->stats);
+       }
+
+       return 0;
+}
+
 static int
 nfp_abm_setup_tc_mq(struct net_device *netdev, struct nfp_abm_link *alink,
                    struct tc_mq_qopt_offload *opt)
@@ -292,6 +314,8 @@ nfp_abm_setup_tc_mq(struct net_device *netdev, struct 
nfp_abm_link *alink,
                if (opt->handle == alink->parent)
                        nfp_abm_reset_root(netdev, alink, TC_H_ROOT, 0);
                return 0;
+       case TC_MQ_STATS:
+               return nfp_abm_mq_stats(alink, opt);
        default:
                return -EOPNOTSUPP;
        }
-- 
2.17.0