target/linux/layerscape/patches-5.4/701-net-0044-sdk_dpaa-ceetm-coding-style-fixes-and-added-comments.patch

   1 From e21cd0d3ef6f039c674b9e22581aaaabdf3a40f7 Mon Sep 17 00:00:00 2001
   2 From: Camelia Groza <camelia.groza@nxp.com>
   3 Date: Fri, 24 Nov 2017 11:55:51 +0200
   4 Subject: [PATCH] sdk_dpaa: ceetm: coding style fixes and added comments
   5
   6 Signed-off-by: Camelia Groza <camelia.groza@nxp.com>
   7 ---
   8  .../ethernet/freescale/sdk_dpaa/dpaa_eth_ceetm.c   | 38 ++++++++++++++--------
   9  1 file changed, 24 insertions(+), 14 deletions(-)
  10
  11 --- a/drivers/net/ethernet/freescale/sdk_dpaa/dpaa_eth_ceetm.c
  12 +++ b/drivers/net/ethernet/freescale/sdk_dpaa/dpaa_eth_ceetm.c
  13 @@ -69,15 +69,17 @@ static void get_dcp_and_sp(struct net_de
  14  static void ceetm_ern(struct qman_portal *portal, struct qman_fq *fq,
  15                       const struct qm_mr_entry *msg)
  16  {
  17 -       struct net_device *net_dev;
  18 -       struct ceetm_class *cls;
  19 +       struct dpa_percpu_priv_s *dpa_percpu_priv;
  20         struct ceetm_class_stats *cstats = NULL;
  21         const struct dpa_priv_s *dpa_priv;
  22 -       struct dpa_percpu_priv_s *dpa_percpu_priv;
  23 -       struct sk_buff *skb;
  24         struct qm_fd fd = msg->ern.fd;
  25 +       struct net_device *net_dev;
  26 +       struct ceetm_fq *ceetm_fq;
  27 +       struct ceetm_class *cls;
  28 +       struct sk_buff *skb;
  29
  30 -       net_dev = ((struct ceetm_fq *)fq)->net_dev;
  31 +       ceetm_fq = container_of(fq, struct ceetm_fq, fq);
  32 +       net_dev = ceetm_fq->net_dev;
  33         dpa_priv = netdev_priv(net_dev);
  34         dpa_percpu_priv = raw_cpu_ptr(dpa_priv->percpu_priv);
  35
  36 @@ -86,7 +88,7 @@ static void ceetm_ern(struct qman_portal
  37         dpa_percpu_priv->stats.tx_fifo_errors++;
  38
  39         /* Increment CEETM counters */
  40 -       cls = ((struct ceetm_fq *)fq)->ceetm_cls;
  41 +       cls = ceetm_fq->ceetm_cls;
  42         switch (cls->type) {
  43         case CEETM_PRIO:
  44                 cstats = this_cpu_ptr(cls->prio.cstats);
  45 @@ -99,11 +101,15 @@ static void ceetm_ern(struct qman_portal
  46         if (cstats)
  47                 cstats->ern_drop_count++;
  48
  49 +       /* Release the buffers that were supposed to be recycled. */
  50         if (fd.bpid != 0xff) {
  51                 dpa_fd_release(net_dev, &fd);
  52                 return;
  53         }
  54
  55 +       /* Release the frames that were supposed to return on the
  56 +        * confirmation path.
  57 +        */
  58         skb = _dpa_cleanup_tx_fd(dpa_priv, &fd);
  59         dev_kfree_skb_any(skb);
  60  }
  61 @@ -1909,18 +1915,22 @@ static struct ceetm_class *ceetm_classif
  62
  63  int __hot ceetm_tx(struct sk_buff *skb, struct net_device *net_dev)
  64  {
  65 -       int ret;
  66 -       bool act_drop = false;
  67 +       const int queue_mapping = dpa_get_queue_mapping(skb);
  68         struct Qdisc *sch = net_dev->qdisc;
  69 -       struct ceetm_class *cl;
  70 +       struct ceetm_class_stats *cstats;
  71 +       struct ceetm_qdisc_stats *qstats;
  72         struct dpa_priv_s *priv_dpa;
  73         struct ceetm_fq *ceetm_fq;
  74 +       struct ceetm_qdisc *priv;
  75         struct qman_fq *conf_fq;
  76 -       struct ceetm_qdisc *priv = qdisc_priv(sch);
  77 -       struct ceetm_qdisc_stats *qstats = this_cpu_ptr(priv->root.qstats);
  78 -       struct ceetm_class_stats *cstats;
  79 -       const int queue_mapping = dpa_get_queue_mapping(skb);
  80 -       spinlock_t *root_lock = qdisc_lock(sch);
  81 +       struct ceetm_class *cl;
  82 +       spinlock_t *root_lock;
  83 +       bool act_drop = false;
  84 +       int ret;
  85 +
  86 +       root_lock = qdisc_lock(sch);
  87 +       priv = qdisc_priv(sch);
  88 +       qstats = this_cpu_ptr(priv->root.qstats);
  89
  90         spin_lock(root_lock);
  91         cl = ceetm_classify(skb, sch, &ret, &act_drop);