target/linux/layerscape/patches-5.4/701-net-0362-sdk_dpaa-ceetm-remove-references-to-qdisc_lookup.patch

   1 From d6fc3dc5591ca4f0b2a5a77b210c622d8b709362 Mon Sep 17 00:00:00 2001
   2 From: Camelia Groza <camelia.groza@nxp.com>
   3 Date: Fri, 20 Dec 2019 15:56:53 +0200
   4 Subject: [PATCH] sdk_dpaa: ceetm: remove references to qdisc_lookup
   5
   6 In order to enable building the driver as a module, remove the
   7 references to the undefined qdisc_lookup symbol.
   8
   9 Signed-off-by: Camelia Groza <camelia.groza@nxp.com>
  10 ---
  11  .../ethernet/freescale/sdk_dpaa/dpaa_eth_ceetm.c   | 49 ++++++++++++++++------
  12  1 file changed, 36 insertions(+), 13 deletions(-)
  13
  14 --- a/drivers/net/ethernet/freescale/sdk_dpaa/dpaa_eth_ceetm.c
  15 +++ b/drivers/net/ethernet/freescale/sdk_dpaa/dpaa_eth_ceetm.c
  16 @@ -812,8 +812,8 @@ static int ceetm_init_prio(struct Qdisc
  17         int err;
  18         unsigned int i;
  19         struct ceetm_class *parent_cl, *child_cl;
  20 -       struct Qdisc *parent_qdisc;
  21         struct net_device *dev = qdisc_dev(sch);
  22 +       struct Qdisc *root_qdisc = dev->qdisc;
  23
  24         pr_debug(KBUILD_BASENAME " : %s : qdisc %X\n", __func__, sch->handle);
  25
  26 @@ -822,14 +822,18 @@ static int ceetm_init_prio(struct Qdisc
  27                 return -EINVAL;
  28         }
  29
  30 -       parent_qdisc = qdisc_lookup(dev, TC_H_MAJ(sch->parent));
  31 -       if (strcmp(parent_qdisc->ops->id, ceetm_qdisc_ops.id)) {
  32 +       if (TC_H_MAJ(sch->parent) != TC_H_MAJ(root_qdisc->handle)) {
  33 +               pr_err("CEETM: a prio ceetm qdiscs can be added only under a root ceetm class\n");
  34 +               return -EINVAL;
  35 +       }
  36 +
  37 +       if (strcmp(root_qdisc->ops->id, ceetm_qdisc_ops.id)) {
  38                 pr_err("CEETM: a ceetm qdisc can not be attached to other qdisc/class types\n");
  39                 return -EINVAL;
  40         }
  41
  42         /* Obtain the parent root ceetm_class */
  43 -       parent_cl = ceetm_find(sch->parent, parent_qdisc);
  44 +       parent_cl = ceetm_find(sch->parent, root_qdisc);
  45
  46         if (!parent_cl || parent_cl->type != CEETM_ROOT) {
  47                 pr_err("CEETM: a prio ceetm qdiscs can be added only under a root ceetm class\n");
  48 @@ -902,9 +906,9 @@ static int ceetm_init_wbfs(struct Qdisc
  49  {
  50         int err, group_b, small_group;
  51         unsigned int i, id, prio_a, prio_b;
  52 -       struct ceetm_class *parent_cl, *child_cl, *root_cl;
  53 -       struct Qdisc *parent_qdisc;
  54 -       struct ceetm_qdisc *parent_priv;
  55 +       struct ceetm_class *parent_cl, *child_cl, *tmp_cl, *root_cl = NULL;
  56 +       struct Qdisc *root_qdisc, *parent_qdisc = NULL;
  57 +       struct ceetm_qdisc *root_priv;
  58         struct net_device *dev = qdisc_dev(sch);
  59
  60         pr_debug(KBUILD_BASENAME " : %s : qdisc %X\n", __func__, sch->handle);
  61 @@ -915,16 +919,37 @@ static int ceetm_init_wbfs(struct Qdisc
  62                 return -EINVAL;
  63         }
  64
  65 -       /* Obtain the parent prio ceetm qdisc */
  66 -       parent_qdisc = qdisc_lookup(dev, TC_H_MAJ(sch->parent));
  67 -       if (strcmp(parent_qdisc->ops->id, ceetm_qdisc_ops.id)) {
  68 +       root_qdisc = dev->qdisc;
  69 +
  70 +       if (strcmp(root_qdisc->ops->id, ceetm_qdisc_ops.id)) {
  71                 pr_err("CEETM: a ceetm qdisc can not be attached to other qdisc/class types\n");
  72                 return -EINVAL;
  73         }
  74
  75 +       root_priv = qdisc_priv(root_qdisc);
  76 +
  77 +       /* Obtain the root ceetm class and the parent prio ceetm qdisc */
  78 +       for (i = 0; i < root_priv->clhash.hashsize; i++) {
  79 +               hlist_for_each_entry(tmp_cl, &root_priv->clhash.hash[i],
  80 +                                    common.hnode) {
  81 +                       if (tmp_cl->root.child &&
  82 +                           (TC_H_MAJ(tmp_cl->root.child->handle) ==
  83 +                           TC_H_MAJ(sch->parent))) {
  84 +                               parent_qdisc = tmp_cl->root.child;
  85 +                               root_cl = tmp_cl;
  86 +                               break;
  87 +                       }
  88 +               }
  89 +       }
  90 +
  91 +       if (!parent_qdisc ||
  92 +           strcmp(parent_qdisc->ops->id, ceetm_qdisc_ops.id)) {
  93 +               pr_err("CEETM: a wbfs ceetm qdiscs can be added only under a prio ceetm class\n");
  94 +               return -EINVAL;
  95 +       }
  96 +
  97         /* Obtain the parent prio ceetm class */
  98         parent_cl = ceetm_find(sch->parent, parent_qdisc);
  99 -       parent_priv = qdisc_priv(parent_qdisc);
 100
 101         if (!parent_cl || parent_cl->type != CEETM_PRIO) {
 102                 pr_err("CEETM: a wbfs ceetm qdiscs can be added only under a prio ceetm class\n");
 103 @@ -948,8 +973,6 @@ static int ceetm_init_wbfs(struct Qdisc
 104                 return -EINVAL;
 105         }
 106
 107 -       /* Obtain the parent root ceetm class */
 108 -       root_cl = parent_priv->prio.parent;
 109         if ((root_cl->root.wbfs_grp_a && root_cl->root.wbfs_grp_b) ||
 110             root_cl->root.wbfs_grp_large) {
 111                 pr_err("CEETM: no more wbfs classes are available\n");