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760c80b70b
We get this regression when using RTL8366RB as part of a bridge
with OpenWrt:
WARNING: CPU: 0 PID: 1347 at net/switchdev/switchdev.c:291
switchdev_port_attr_set_now+0x80/0xa4
lan0: Commit of attribute (id=7) failed.
(...)
realtek-smi switch lan0: failed to initialize vlan filtering on this port
This is because it is trying to disable VLAN filtering
on VLAN0, as we have forgot to add 1 to the port number
to get the right VLAN in rtl8366_vlan_filtering(): when
we initialize the VLAN we associate VLAN1 with port 0,
VLAN2 with port 1 etc, so we need to add 1 to the port
offset.
Fixes: d8652956cf ("net: dsa: realtek-smi: Add Realtek SMI driver")
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
517 lines
11 KiB
C
517 lines
11 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/* Realtek SMI library helpers for the RTL8366x variants
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* RTL8366RB and RTL8366S
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*
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* Copyright (C) 2017 Linus Walleij <linus.walleij@linaro.org>
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* Copyright (C) 2009-2010 Gabor Juhos <juhosg@openwrt.org>
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* Copyright (C) 2010 Antti Seppälä <a.seppala@gmail.com>
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* Copyright (C) 2010 Roman Yeryomin <roman@advem.lv>
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* Copyright (C) 2011 Colin Leitner <colin.leitner@googlemail.com>
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*/
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#include <linux/if_bridge.h>
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#include <net/dsa.h>
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#include "realtek-smi-core.h"
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int rtl8366_mc_is_used(struct realtek_smi *smi, int mc_index, int *used)
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{
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int ret;
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int i;
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*used = 0;
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for (i = 0; i < smi->num_ports; i++) {
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int index = 0;
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ret = smi->ops->get_mc_index(smi, i, &index);
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if (ret)
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return ret;
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if (mc_index == index) {
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*used = 1;
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break;
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}
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}
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return 0;
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}
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EXPORT_SYMBOL_GPL(rtl8366_mc_is_used);
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int rtl8366_set_vlan(struct realtek_smi *smi, int vid, u32 member,
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u32 untag, u32 fid)
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{
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struct rtl8366_vlan_4k vlan4k;
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int ret;
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int i;
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/* Update the 4K table */
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ret = smi->ops->get_vlan_4k(smi, vid, &vlan4k);
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if (ret)
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return ret;
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vlan4k.member = member;
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vlan4k.untag = untag;
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vlan4k.fid = fid;
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ret = smi->ops->set_vlan_4k(smi, &vlan4k);
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if (ret)
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return ret;
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/* Try to find an existing MC entry for this VID */
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for (i = 0; i < smi->num_vlan_mc; i++) {
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struct rtl8366_vlan_mc vlanmc;
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ret = smi->ops->get_vlan_mc(smi, i, &vlanmc);
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if (ret)
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return ret;
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if (vid == vlanmc.vid) {
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/* update the MC entry */
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vlanmc.member = member;
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vlanmc.untag = untag;
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vlanmc.fid = fid;
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ret = smi->ops->set_vlan_mc(smi, i, &vlanmc);
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break;
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}
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}
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return ret;
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}
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EXPORT_SYMBOL_GPL(rtl8366_set_vlan);
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int rtl8366_get_pvid(struct realtek_smi *smi, int port, int *val)
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{
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struct rtl8366_vlan_mc vlanmc;
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int ret;
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int index;
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ret = smi->ops->get_mc_index(smi, port, &index);
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if (ret)
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return ret;
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ret = smi->ops->get_vlan_mc(smi, index, &vlanmc);
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if (ret)
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return ret;
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*val = vlanmc.vid;
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return 0;
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}
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EXPORT_SYMBOL_GPL(rtl8366_get_pvid);
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int rtl8366_set_pvid(struct realtek_smi *smi, unsigned int port,
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unsigned int vid)
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{
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struct rtl8366_vlan_mc vlanmc;
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struct rtl8366_vlan_4k vlan4k;
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int ret;
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int i;
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/* Try to find an existing MC entry for this VID */
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for (i = 0; i < smi->num_vlan_mc; i++) {
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ret = smi->ops->get_vlan_mc(smi, i, &vlanmc);
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if (ret)
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return ret;
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if (vid == vlanmc.vid) {
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ret = smi->ops->set_vlan_mc(smi, i, &vlanmc);
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if (ret)
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return ret;
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ret = smi->ops->set_mc_index(smi, port, i);
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return ret;
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}
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}
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/* We have no MC entry for this VID, try to find an empty one */
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for (i = 0; i < smi->num_vlan_mc; i++) {
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ret = smi->ops->get_vlan_mc(smi, i, &vlanmc);
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if (ret)
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return ret;
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if (vlanmc.vid == 0 && vlanmc.member == 0) {
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/* Update the entry from the 4K table */
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ret = smi->ops->get_vlan_4k(smi, vid, &vlan4k);
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if (ret)
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return ret;
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vlanmc.vid = vid;
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vlanmc.member = vlan4k.member;
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vlanmc.untag = vlan4k.untag;
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vlanmc.fid = vlan4k.fid;
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ret = smi->ops->set_vlan_mc(smi, i, &vlanmc);
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if (ret)
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return ret;
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ret = smi->ops->set_mc_index(smi, port, i);
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return ret;
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}
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}
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/* MC table is full, try to find an unused entry and replace it */
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for (i = 0; i < smi->num_vlan_mc; i++) {
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int used;
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ret = rtl8366_mc_is_used(smi, i, &used);
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if (ret)
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return ret;
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if (!used) {
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/* Update the entry from the 4K table */
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ret = smi->ops->get_vlan_4k(smi, vid, &vlan4k);
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if (ret)
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return ret;
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vlanmc.vid = vid;
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vlanmc.member = vlan4k.member;
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vlanmc.untag = vlan4k.untag;
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vlanmc.fid = vlan4k.fid;
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ret = smi->ops->set_vlan_mc(smi, i, &vlanmc);
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if (ret)
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return ret;
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ret = smi->ops->set_mc_index(smi, port, i);
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return ret;
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}
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}
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dev_err(smi->dev,
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"all VLAN member configurations are in use\n");
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return -ENOSPC;
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}
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EXPORT_SYMBOL_GPL(rtl8366_set_pvid);
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int rtl8366_enable_vlan4k(struct realtek_smi *smi, bool enable)
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{
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int ret;
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/* To enable 4k VLAN, ordinary VLAN must be enabled first,
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* but if we disable 4k VLAN it is fine to leave ordinary
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* VLAN enabled.
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*/
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if (enable) {
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/* Make sure VLAN is ON */
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ret = smi->ops->enable_vlan(smi, true);
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if (ret)
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return ret;
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smi->vlan_enabled = true;
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}
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ret = smi->ops->enable_vlan4k(smi, enable);
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if (ret)
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return ret;
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smi->vlan4k_enabled = enable;
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return 0;
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}
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EXPORT_SYMBOL_GPL(rtl8366_enable_vlan4k);
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int rtl8366_enable_vlan(struct realtek_smi *smi, bool enable)
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{
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int ret;
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ret = smi->ops->enable_vlan(smi, enable);
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if (ret)
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return ret;
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smi->vlan_enabled = enable;
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/* If we turn VLAN off, make sure that we turn off
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* 4k VLAN as well, if that happened to be on.
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*/
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if (!enable) {
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smi->vlan4k_enabled = false;
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ret = smi->ops->enable_vlan4k(smi, false);
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}
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return ret;
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}
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EXPORT_SYMBOL_GPL(rtl8366_enable_vlan);
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int rtl8366_reset_vlan(struct realtek_smi *smi)
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{
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struct rtl8366_vlan_mc vlanmc;
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int ret;
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int i;
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rtl8366_enable_vlan(smi, false);
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rtl8366_enable_vlan4k(smi, false);
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/* Clear the 16 VLAN member configurations */
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vlanmc.vid = 0;
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vlanmc.priority = 0;
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vlanmc.member = 0;
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vlanmc.untag = 0;
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vlanmc.fid = 0;
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for (i = 0; i < smi->num_vlan_mc; i++) {
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ret = smi->ops->set_vlan_mc(smi, i, &vlanmc);
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if (ret)
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return ret;
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}
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return 0;
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}
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EXPORT_SYMBOL_GPL(rtl8366_reset_vlan);
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int rtl8366_init_vlan(struct realtek_smi *smi)
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{
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int port;
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int ret;
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ret = rtl8366_reset_vlan(smi);
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if (ret)
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return ret;
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/* Loop over the available ports, for each port, associate
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* it with the VLAN (port+1)
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*/
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for (port = 0; port < smi->num_ports; port++) {
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u32 mask;
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if (port == smi->cpu_port)
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/* For the CPU port, make all ports members of this
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* VLAN.
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*/
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mask = GENMASK(smi->num_ports - 1, 0);
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else
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/* For all other ports, enable itself plus the
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* CPU port.
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*/
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mask = BIT(port) | BIT(smi->cpu_port);
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/* For each port, set the port as member of VLAN (port+1)
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* and untagged, except for the CPU port: the CPU port (5) is
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* member of VLAN 6 and so are ALL the other ports as well.
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* Use filter 0 (no filter).
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*/
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dev_info(smi->dev, "VLAN%d port mask for port %d, %08x\n",
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(port + 1), port, mask);
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ret = rtl8366_set_vlan(smi, (port + 1), mask, mask, 0);
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if (ret)
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return ret;
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dev_info(smi->dev, "VLAN%d port %d, PVID set to %d\n",
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(port + 1), port, (port + 1));
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ret = rtl8366_set_pvid(smi, port, (port + 1));
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if (ret)
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return ret;
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}
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return rtl8366_enable_vlan(smi, true);
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}
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EXPORT_SYMBOL_GPL(rtl8366_init_vlan);
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int rtl8366_vlan_filtering(struct dsa_switch *ds, int port, bool vlan_filtering)
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{
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struct realtek_smi *smi = ds->priv;
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struct rtl8366_vlan_4k vlan4k;
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int ret;
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/* Use VLAN nr port + 1 since VLAN0 is not valid */
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if (!smi->ops->is_vlan_valid(smi, port + 1))
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return -EINVAL;
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dev_info(smi->dev, "%s filtering on port %d\n",
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vlan_filtering ? "enable" : "disable",
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port);
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/* TODO:
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* The hardware support filter ID (FID) 0..7, I have no clue how to
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* support this in the driver when the callback only says on/off.
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*/
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ret = smi->ops->get_vlan_4k(smi, port + 1, &vlan4k);
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if (ret)
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return ret;
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/* Just set the filter to FID 1 for now then */
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ret = rtl8366_set_vlan(smi, port + 1,
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vlan4k.member,
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vlan4k.untag,
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1);
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if (ret)
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return ret;
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return 0;
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}
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EXPORT_SYMBOL_GPL(rtl8366_vlan_filtering);
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int rtl8366_vlan_prepare(struct dsa_switch *ds, int port,
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const struct switchdev_obj_port_vlan *vlan)
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{
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struct realtek_smi *smi = ds->priv;
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int ret;
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if (!smi->ops->is_vlan_valid(smi, port))
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return -EINVAL;
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dev_info(smi->dev, "prepare VLANs %04x..%04x\n",
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vlan->vid_begin, vlan->vid_end);
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/* Enable VLAN in the hardware
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* FIXME: what's with this 4k business?
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* Just rtl8366_enable_vlan() seems inconclusive.
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*/
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ret = rtl8366_enable_vlan4k(smi, true);
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if (ret)
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return ret;
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return 0;
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}
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EXPORT_SYMBOL_GPL(rtl8366_vlan_prepare);
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void rtl8366_vlan_add(struct dsa_switch *ds, int port,
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const struct switchdev_obj_port_vlan *vlan)
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{
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bool untagged = !!(vlan->flags & BRIDGE_VLAN_INFO_UNTAGGED);
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bool pvid = !!(vlan->flags & BRIDGE_VLAN_INFO_PVID);
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struct realtek_smi *smi = ds->priv;
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u32 member = 0;
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u32 untag = 0;
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u16 vid;
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int ret;
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if (!smi->ops->is_vlan_valid(smi, port))
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return;
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dev_info(smi->dev, "add VLAN on port %d, %s, %s\n",
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port,
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untagged ? "untagged" : "tagged",
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pvid ? " PVID" : "no PVID");
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if (dsa_is_dsa_port(ds, port) || dsa_is_cpu_port(ds, port))
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dev_err(smi->dev, "port is DSA or CPU port\n");
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for (vid = vlan->vid_begin; vid <= vlan->vid_end; ++vid) {
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int pvid_val = 0;
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dev_info(smi->dev, "add VLAN %04x\n", vid);
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member |= BIT(port);
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if (untagged)
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untag |= BIT(port);
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/* To ensure that we have a valid MC entry for this VLAN,
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* initialize the port VLAN ID here.
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*/
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ret = rtl8366_get_pvid(smi, port, &pvid_val);
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if (ret < 0) {
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dev_err(smi->dev, "could not lookup PVID for port %d\n",
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port);
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return;
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}
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if (pvid_val == 0) {
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ret = rtl8366_set_pvid(smi, port, vid);
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if (ret < 0)
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return;
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}
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}
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ret = rtl8366_set_vlan(smi, port, member, untag, 0);
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if (ret)
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dev_err(smi->dev,
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"failed to set up VLAN %04x",
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vid);
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}
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EXPORT_SYMBOL_GPL(rtl8366_vlan_add);
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int rtl8366_vlan_del(struct dsa_switch *ds, int port,
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const struct switchdev_obj_port_vlan *vlan)
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{
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struct realtek_smi *smi = ds->priv;
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u16 vid;
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int ret;
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dev_info(smi->dev, "del VLAN on port %d\n", port);
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for (vid = vlan->vid_begin; vid <= vlan->vid_end; ++vid) {
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int i;
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dev_info(smi->dev, "del VLAN %04x\n", vid);
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for (i = 0; i < smi->num_vlan_mc; i++) {
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struct rtl8366_vlan_mc vlanmc;
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ret = smi->ops->get_vlan_mc(smi, i, &vlanmc);
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if (ret)
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return ret;
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if (vid == vlanmc.vid) {
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/* clear VLAN member configurations */
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vlanmc.vid = 0;
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vlanmc.priority = 0;
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vlanmc.member = 0;
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vlanmc.untag = 0;
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vlanmc.fid = 0;
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ret = smi->ops->set_vlan_mc(smi, i, &vlanmc);
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if (ret) {
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dev_err(smi->dev,
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"failed to remove VLAN %04x\n",
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vid);
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return ret;
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}
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break;
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}
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}
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}
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return 0;
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}
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EXPORT_SYMBOL_GPL(rtl8366_vlan_del);
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void rtl8366_get_strings(struct dsa_switch *ds, int port, u32 stringset,
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uint8_t *data)
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{
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struct realtek_smi *smi = ds->priv;
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struct rtl8366_mib_counter *mib;
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int i;
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if (port >= smi->num_ports)
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return;
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for (i = 0; i < smi->num_mib_counters; i++) {
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mib = &smi->mib_counters[i];
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strncpy(data + i * ETH_GSTRING_LEN,
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mib->name, ETH_GSTRING_LEN);
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}
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}
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EXPORT_SYMBOL_GPL(rtl8366_get_strings);
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int rtl8366_get_sset_count(struct dsa_switch *ds, int port, int sset)
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{
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struct realtek_smi *smi = ds->priv;
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/* We only support SS_STATS */
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if (sset != ETH_SS_STATS)
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return 0;
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if (port >= smi->num_ports)
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return -EINVAL;
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return smi->num_mib_counters;
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}
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EXPORT_SYMBOL_GPL(rtl8366_get_sset_count);
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void rtl8366_get_ethtool_stats(struct dsa_switch *ds, int port, uint64_t *data)
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{
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struct realtek_smi *smi = ds->priv;
|
|
int i;
|
|
int ret;
|
|
|
|
if (port >= smi->num_ports)
|
|
return;
|
|
|
|
for (i = 0; i < smi->num_mib_counters; i++) {
|
|
struct rtl8366_mib_counter *mib;
|
|
u64 mibvalue = 0;
|
|
|
|
mib = &smi->mib_counters[i];
|
|
ret = smi->ops->get_mib_counter(smi, port, mib, &mibvalue);
|
|
if (ret) {
|
|
dev_err(smi->dev, "error reading MIB counter %s\n",
|
|
mib->name);
|
|
}
|
|
data[i] = mibvalue;
|
|
}
|
|
}
|
|
EXPORT_SYMBOL_GPL(rtl8366_get_ethtool_stats);
|