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net: dsa: store CPU switch structure in the tree

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Store a dsa_switch pointer to the CPU switch in the tree instead of only
its index. This avoids the need to initialize it to -1.

Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Vivien Didelot 2017-01-17 20:41:38 -05:00 committed by David S. Miller
parent e33c2ef106
commit b22de49086
3 changed files with 9 additions and 11 deletions
repo.diff.show_diff_stats Download patch file Download diff file Expand all files Collapse all files

8
include/net/dsa.h
View file

@ -124,7 +124,7 @@ struct dsa_switch_tree {
/*
* The switch and port to which the CPU is attached.
*/
s8 cpu_switch;
struct dsa_switch *cpu_switch;
s8 cpu_port;
/*
@ -204,7 +204,7 @@ struct dsa_switch {
static inline bool dsa_is_cpu_port(struct dsa_switch *ds, int p)
{
return !!(ds->index == ds->dst->cpu_switch && p == ds->dst->cpu_port);
return !!(ds == ds->dst->cpu_switch && p == ds->dst->cpu_port);
}
static inline bool dsa_is_dsa_port(struct dsa_switch *ds, int p)
@ -227,10 +227,10 @@ static inline u8 dsa_upstream_port(struct dsa_switch *ds)
* Else return the (DSA) port number that connects to the
* switch that is one hop closer to the cpu.
*/
if (dst->cpu_switch == ds->index)
if (dst->cpu_switch == ds)
return dst->cpu_port;
else
return ds->rtable[dst->cpu_switch];
return ds->rtable[dst->cpu_switch->index];
}
struct switchdev_trans;

7
net/dsa/dsa.c
View file

@ -225,12 +225,12 @@ static int dsa_switch_setup_one(struct dsa_switch *ds, struct device *parent)
continue;
if (!strcmp(name, "cpu")) {
if (dst->cpu_switch != -1) {
if (!dst->cpu_switch) {
netdev_err(dst->master_netdev,
"multiple cpu ports?!\n");
return -EINVAL;
}
dst->cpu_switch = index;
dst->cpu_switch = ds;
dst->cpu_port = i;
ds->cpu_port_mask |= 1 << i;
} else if (!strcmp(name, "dsa")) {
@ -254,7 +254,7 @@ static int dsa_switch_setup_one(struct dsa_switch *ds, struct device *parent)
* tagging protocol to the preferred tagging format of this
* switch.
*/
if (dst->cpu_switch == index) {
if (dst->cpu_switch == ds) {
enum dsa_tag_protocol tag_protocol;
tag_protocol = ops->get_tag_protocol(ds);
@ -757,7 +757,6 @@ static int dsa_setup_dst(struct dsa_switch_tree *dst, struct net_device *dev,
dst->pd = pd;
dst->master_netdev = dev;
dst->cpu_switch = -1;
dst->cpu_port = -1;
for (i = 0; i < pd->nr_chips; i++) {

5
net/dsa/dsa2.c
View file

@ -57,7 +57,6 @@ static struct dsa_switch_tree *dsa_add_dst(u32 tree)
if (!dst)
return NULL;
dst->tree = tree;
dst->cpu_switch = -1;
INIT_LIST_HEAD(&dst->list);
list_add_tail(&dsa_switch_trees, &dst->list);
kref_init(&dst->refcount);
@ -448,8 +447,8 @@ static int dsa_cpu_parse(struct device_node *port, u32 index,
if (!dst->master_netdev)
dst->master_netdev = ethernet_dev;
if (dst->cpu_switch == -1) {
dst->cpu_switch = ds->index;
if (!dst->cpu_switch) {
dst->cpu_switch = ds;
dst->cpu_port = index;
}