Added read only file /sys/class/net/<port>/lan9303/alr_dump,
that output 168 first ALR entires.
Currently "bridge fdb show" does not include the CPU port, while
"alr_dump" list all three ports per entry.
Example output:
9c:57:ad:79:d0:84 1 l
01:80:c2:00:00:00 0 s
00:13:cb:0d:01:95 0 s
10:f3:11:f5:6f:cf 2 l
48:4d:7e:f4:59:a8 2 l
01:00:5e:00:01:0a 0 2 s
ec:f4:bb:0f:e2:fd 2 l
Signed-off-by: Egil Hjelmeland <egil.hjelmeland@xxxxxxxxxxx>
---
Documentation/networking/dsa/lan9303.txt | 3 ++
drivers/net/dsa/lan9303-core.c | 58 ++++++++++++++++++++++++++++++++
2 files changed, 61 insertions(+)
diff --git a/Documentation/networking/dsa/lan9303.txt b/Documentation/networking/dsa/lan9303.txt
index 1fd72ff4b492..ace91c821ce7 100644
--- a/Documentation/networking/dsa/lan9303.txt
+++ b/Documentation/networking/dsa/lan9303.txt
@@ -37,6 +37,9 @@ Sysfs nodes
When a user port is enabled, the driver creates sysfs directory
/sys/class/net/xxx/lan9303 with the following files:
+ - alr_dump (RO): List the 168 first entries of the ALR table.
+ Including port 0 entires. This file is identical for both ports.
+ Format: MAC; list of ports; (l)earned / (s)tatic
- swe_bcst_throt (RW): Set/get 6.4.7 Broadcast Storm Control
Throttle Level for the port. Accesses the corresponding bits of
the SWE_BCST_THROT register (13.4.3.23).
diff --git a/drivers/net/dsa/lan9303-core.c b/drivers/net/dsa/lan9303-core.c
index ad7a4c72e1fb..b682aa4f1fca 100644
--- a/drivers/net/dsa/lan9303-core.c
+++ b/drivers/net/dsa/lan9303-core.c
@@ -642,6 +642,47 @@ static void alr_loop_cb_fdb_port_dump(
dump_ctx->cb(&fdb->obj);
}
+/* /sys/class/net/xxx/lan9303/alr_dump: display 168 first ALR entires,
+ * including cpu port
+ */
+struct port_sysfs_dump_ctx {
+ char *buf;
+ int pos;
+};
+
+static void alr_loop_cb_sysfs_dump(
+ struct lan9303 *chip, u32 dat0, u32 dat1, int portmap, void *ctx)
+{
+# define LINE_LEN 24
+ struct port_sysfs_dump_ctx *dump_ctx = ctx;
+ char *buf = dump_ctx->buf;
+ int pos = dump_ctx->pos;
+
+ u8 mac[ETH_ALEN];
+ int p;
+ char ports[LAN9303_NUM_PORTS + 1];
+ const char trunc_txt[] = "Truncated!\n";
+
+ if (pos >= PAGE_SIZE - LINE_LEN - (sizeof(trunc_txt) - 1)) {
+ if (pos < PAGE_SIZE - LINE_LEN)
+ pos += sprintf(buf + pos, trunc_txt);
+ dump_ctx->pos = pos;
+ return;
+ }
+
+ _alr_reg_to_mac(dat0, dat1, mac);
+
+ /* print ports as list of port numbers: */
+ for (p = 0; p < LAN9303_NUM_PORTS; p++)
+ ports[p] = (portmap & BIT(p)) ? '0' + p : ' ';
+ ports[LAN9303_NUM_PORTS] = 0;
+
+ pos += sprintf(buf + pos, "%pM %s %s\n",
+ mac, ports,
+ (dat1 & ALR_DAT1_STATIC) ? "s" : "l");
+ dump_ctx->pos = pos;
+}
+
/* ALR: Add/modify/delete ALR entries */
/* Set a static ALR entry. Delete entry if port_map is zero */
@@ -931,8 +972,25 @@ swe_bcst_throt_store(struct device *dev, struct device_attribute *attr,
static DEVICE_ATTR_RW(swe_bcst_throt);
+static ssize_t
+alr_dump_show(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ struct dsa_port *dp = dsa_net_device_to_dsa_port(to_net_dev(dev));
+ struct lan9303 *chip = dp->ds->priv;
+ struct port_sysfs_dump_ctx dump_ctx = {
+ .buf = buf,
+ .pos = 0,
+ };
+
+ lan9303_alr_loop(chip, alr_loop_cb_sysfs_dump, &dump_ctx);
+ return dump_ctx.pos;
+}
+static DEVICE_ATTR_RO(alr_dump);
+
static struct attribute *lan9303_attrs[] = {
&dev_attr_swe_bcst_throt.attr,
+ &dev_attr_alr_dump.attr,
NULL
};
--
2.11.0
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