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Message-ID: <1350427518-7230-4-git-send-email-mugunthanvnm@ti.com>
Date: Wed, 17 Oct 2012 04:15:15 +0530
From: Mugunthan V N <mugunthanvnm@...com>
To: <netdev@...r.kernel.org>
CC: <davem@...emloft.net>, Richard Cochran <richardcochran@...il.com>,
Mugunthan V N <mugunthanvnm@...com>
Subject: [PATCH 3/6] drivers: net: ethernet: cpsw: add multicast address to ALE table
Adding multicast address to ALE table via netdev ops to subscribe, transmit
or receive multicast frames to and from the network
Cc: Richard Cochran <richardcochran@...il.com>
Signed-off-by: Mugunthan V N <mugunthanvnm@...com>
---
drivers/net/ethernet/ti/cpsw.c | 27 +++++++++++++++++++++++++++
drivers/net/ethernet/ti/cpsw_ale.c | 31 ++++++++++++++++++++++++++++---
drivers/net/ethernet/ti/cpsw_ale.h | 1 +
3 files changed, 56 insertions(+), 3 deletions(-)
diff --git a/drivers/net/ethernet/ti/cpsw.c b/drivers/net/ethernet/ti/cpsw.c
index cdf9ecc..b6af1c6 100644
--- a/drivers/net/ethernet/ti/cpsw.c
+++ b/drivers/net/ethernet/ti/cpsw.c
@@ -75,6 +75,8 @@ do { \
#define cpsw_slave_reg(priv, slave, reg) \
((slave)->regs + (priv)->slave_reg_ofs[(reg)])
+#define ALE_ALL_PORTS 0x7
+
#define CPSW_MAJOR_VERSION(reg) (reg >> 8 & 0x7)
#define CPSW_MINOR_VERSION(reg) (reg & 0xff)
#define CPSW_RTL_VERSION(reg) ((reg >> 11) & 0x1f)
@@ -271,6 +273,30 @@ struct cpsw_priv {
(func)((priv)->slaves + idx, ##arg); \
} while (0)
+static void cpsw_ndo_set_rx_mode(struct net_device *ndev)
+{
+ struct cpsw_priv *priv = netdev_priv(ndev);
+
+ if (ndev->flags & IFF_PROMISC) {
+ /* Enable promiscuous mode */
+ dev_err(priv->dev, "Ignoring Promiscuous mode\n");
+ return;
+ }
+
+ /* Clear all mcast from ALE */
+ cpsw_ale_flush_multicast(priv->ale, ALE_ALL_PORTS << priv->host_port);
+
+ if (!netdev_mc_empty(ndev)) {
+ struct netdev_hw_addr *ha;
+
+ /* program multicast address list into ALE register */
+ netdev_for_each_mc_addr(ha, ndev) {
+ cpsw_ale_add_mcast(priv->ale, (u8 *)ha->addr,
+ ALE_ALL_PORTS << priv->host_port, 0, 0);
+ }
+ }
+}
+
static void cpsw_intr_enable(struct cpsw_priv *priv)
{
__raw_writel(0xFF, &priv->ss_regs->tx_en);
@@ -721,6 +747,7 @@ static const struct net_device_ops cpsw_netdev_ops = {
.ndo_change_mtu = eth_change_mtu,
.ndo_tx_timeout = cpsw_ndo_tx_timeout,
.ndo_get_stats = cpsw_ndo_get_stats,
+ .ndo_set_rx_mode = cpsw_ndo_set_rx_mode,
#ifdef CONFIG_NET_POLL_CONTROLLER
.ndo_poll_controller = cpsw_ndo_poll_controller,
#endif
diff --git a/drivers/net/ethernet/ti/cpsw_ale.c b/drivers/net/ethernet/ti/cpsw_ale.c
index ca0d48a..0e9ccc2 100644
--- a/drivers/net/ethernet/ti/cpsw_ale.c
+++ b/drivers/net/ethernet/ti/cpsw_ale.c
@@ -20,6 +20,7 @@
#include <linux/io.h>
#include <linux/stat.h>
#include <linux/sysfs.h>
+#include <linux/etherdevice.h>
#include "cpsw_ale.h"
@@ -211,10 +212,34 @@ static void cpsw_ale_flush_mcast(struct cpsw_ale *ale, u32 *ale_entry,
mask &= ~port_mask;
/* free if only remaining port is host port */
- if (mask == BIT(ale->params.ale_ports))
- cpsw_ale_set_entry_type(ale_entry, ALE_TYPE_FREE);
- else
+ if (mask)
cpsw_ale_set_port_mask(ale_entry, mask);
+ else
+ cpsw_ale_set_entry_type(ale_entry, ALE_TYPE_FREE);
+}
+
+int cpsw_ale_flush_multicast(struct cpsw_ale *ale, int port_mask)
+{
+ u32 ale_entry[ALE_ENTRY_WORDS];
+ int ret, idx;
+
+ for (idx = 0; idx < ale->params.ale_entries; idx++) {
+ cpsw_ale_read(ale, idx, ale_entry);
+ ret = cpsw_ale_get_entry_type(ale_entry);
+ if (ret != ALE_TYPE_ADDR && ret != ALE_TYPE_VLAN_ADDR)
+ continue;
+
+ if (cpsw_ale_get_mcast(ale_entry)) {
+ u8 addr[6];
+
+ cpsw_ale_get_addr(ale_entry, addr);
+ if (!is_broadcast_ether_addr(addr))
+ cpsw_ale_flush_mcast(ale, ale_entry, port_mask);
+ }
+
+ cpsw_ale_write(ale, idx, ale_entry);
+ }
+ return 0;
}
static void cpsw_ale_flush_ucast(struct cpsw_ale *ale, u32 *ale_entry,
diff --git a/drivers/net/ethernet/ti/cpsw_ale.h b/drivers/net/ethernet/ti/cpsw_ale.h
index a95b37b..2bd09cb 100644
--- a/drivers/net/ethernet/ti/cpsw_ale.h
+++ b/drivers/net/ethernet/ti/cpsw_ale.h
@@ -80,6 +80,7 @@ void cpsw_ale_stop(struct cpsw_ale *ale);
int cpsw_ale_set_ageout(struct cpsw_ale *ale, int ageout);
int cpsw_ale_flush(struct cpsw_ale *ale, int port_mask);
+int cpsw_ale_flush_multicast(struct cpsw_ale *ale, int port_mask);
int cpsw_ale_add_ucast(struct cpsw_ale *ale, u8 *addr, int port, int flags);
int cpsw_ale_del_ucast(struct cpsw_ale *ale, u8 *addr, int port);
int cpsw_ale_add_mcast(struct cpsw_ale *ale, u8 *addr, int port_mask,
--
1.7.0.4
--
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