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net: dsa: setup and teardown tree

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This commit provides better scope for the DSA tree setup and teardown
functions. It renames the "applied" bool to "setup" and print a message
when the tree is setup, as it is done during teardown.

At the same time, check dst->setup in dsa_tree_setup, where it is set to
true.

Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Vivien Didelot 2017-11-06 16:11:46 -05:00 committed by David S. Miller
parent 17a22fcfc8
commit ec15dd4269
2 changed files with 19 additions and 15 deletions
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2
include/net/dsa.h
View File

@ -122,7 +122,7 @@ struct dsa_switch_tree {
struct kref refcount;
/* Has this tree been applied to the hardware? */
bool applied;
bool setup;
/*
* Configuration data for the platform device that owns

32
net/dsa/dsa2.c
View File

@ -486,12 +486,18 @@ static void dsa_tree_teardown_master(struct dsa_switch_tree *dst)
return dsa_master_teardown(master);
}
static int dsa_dst_apply(struct dsa_switch_tree *dst)
static int dsa_tree_setup(struct dsa_switch_tree *dst)
{
struct dsa_switch *ds;
u32 index;
int err;
if (dst->setup) {
pr_err("DSA: tree %d already setup! Disjoint trees?\n",
dst->index);
return -EEXIST;
}
err = dsa_tree_setup_default_cpu(dst);
if (err)
return err;
@ -510,17 +516,19 @@ static int dsa_dst_apply(struct dsa_switch_tree *dst)
if (err)
return err;
dst->applied = true;
dst->setup = true;
pr_info("DSA: tree %d setup\n", dst->index);
return 0;
}
static void dsa_dst_unapply(struct dsa_switch_tree *dst)
static void dsa_tree_teardown(struct dsa_switch_tree *dst)
{
struct dsa_switch *ds;
u32 index;
if (!dst->applied)
if (!dst->setup)
return;
dsa_tree_teardown_master(dst);
@ -535,8 +543,9 @@ static void dsa_dst_unapply(struct dsa_switch_tree *dst)
dsa_tree_teardown_default_cpu(dst);
pr_info("DSA: tree %d unapplied\n", dst->index);
dst->applied = false;
pr_info("DSA: tree %d torn down\n", dst->index);
dst->setup = false;
}
static void dsa_tree_remove_switch(struct dsa_switch_tree *dst,
@ -794,14 +803,9 @@ static int _dsa_register_switch(struct dsa_switch *ds)
if (err == 1)
return 0;
if (dst->applied) {
pr_info("DSA: Disjoint trees?\n");
return -EINVAL;
}
err = dsa_dst_apply(dst);
err = dsa_tree_setup(dst);
if (err) {
dsa_dst_unapply(dst);
dsa_tree_teardown(dst);
goto out_del_dst;
}
@ -852,7 +856,7 @@ static void _dsa_unregister_switch(struct dsa_switch *ds)
struct dsa_switch_tree *dst = ds->dst;
unsigned int index = ds->index;
dsa_dst_unapply(dst);
dsa_tree_teardown(dst);
dsa_tree_remove_switch(dst, index);
}