Commit edb5e46f authored by Stephen Hemminger's avatar Stephen Hemminger Committed by David S. Miller

[BRIDGE]: limited ethtool support

Add limited ethtool support to bridge to allow disabling
features.

Note: if underlying device does not support a feature (like checksum
offload), then the bridge device won't inherit it.
Signed-off-by: default avatarStephen Hemminger <shemminger@osdl.org>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 0e5eabac
...@@ -16,6 +16,7 @@ ...@@ -16,6 +16,7 @@
#include <linux/kernel.h> #include <linux/kernel.h>
#include <linux/netdevice.h> #include <linux/netdevice.h>
#include <linux/etherdevice.h> #include <linux/etherdevice.h>
#include <linux/ethtool.h>
#include <asm/uaccess.h> #include <asm/uaccess.h>
#include "br_private.h" #include "br_private.h"
...@@ -106,6 +107,64 @@ static int br_set_mac_address(struct net_device *dev, void *p) ...@@ -106,6 +107,64 @@ static int br_set_mac_address(struct net_device *dev, void *p)
return err; return err;
} }
static void br_getinfo(struct net_device *dev, struct ethtool_drvinfo *info)
{
strcpy(info->driver, "bridge");
strcpy(info->version, BR_VERSION);
strcpy(info->fw_version, "N/A");
strcpy(info->bus_info, "N/A");
}
static int br_set_sg(struct net_device *dev, u32 data)
{
struct net_bridge *br = netdev_priv(dev);
if (data)
br->feature_mask |= NETIF_F_SG;
else
br->feature_mask &= ~NETIF_F_SG;
br_features_recompute(br);
return 0;
}
static int br_set_tso(struct net_device *dev, u32 data)
{
struct net_bridge *br = netdev_priv(dev);
if (data)
br->feature_mask |= NETIF_F_TSO;
else
br->feature_mask &= ~NETIF_F_TSO;
br_features_recompute(br);
return 0;
}
static int br_set_tx_csum(struct net_device *dev, u32 data)
{
struct net_bridge *br = netdev_priv(dev);
if (data)
br->feature_mask |= NETIF_F_IP_CSUM;
else
br->feature_mask &= ~NETIF_F_IP_CSUM;
br_features_recompute(br);
return 0;
}
static struct ethtool_ops br_ethtool_ops = {
.get_drvinfo = br_getinfo,
.get_link = ethtool_op_get_link,
.get_sg = ethtool_op_get_sg,
.set_sg = br_set_sg,
.get_tx_csum = ethtool_op_get_tx_csum,
.set_tx_csum = br_set_tx_csum,
.get_tso = ethtool_op_get_tso,
.set_tso = br_set_tso,
};
void br_dev_setup(struct net_device *dev) void br_dev_setup(struct net_device *dev)
{ {
memset(dev->dev_addr, 0, ETH_ALEN); memset(dev->dev_addr, 0, ETH_ALEN);
...@@ -120,8 +179,12 @@ void br_dev_setup(struct net_device *dev) ...@@ -120,8 +179,12 @@ void br_dev_setup(struct net_device *dev)
dev->change_mtu = br_change_mtu; dev->change_mtu = br_change_mtu;
dev->destructor = free_netdev; dev->destructor = free_netdev;
SET_MODULE_OWNER(dev); SET_MODULE_OWNER(dev);
SET_ETHTOOL_OPS(dev, &br_ethtool_ops);
dev->stop = br_dev_stop; dev->stop = br_dev_stop;
dev->tx_queue_len = 0; dev->tx_queue_len = 0;
dev->set_mac_address = br_set_mac_address; dev->set_mac_address = br_set_mac_address;
dev->priv_flags = IFF_EBRIDGE; dev->priv_flags = IFF_EBRIDGE;
dev->features = NETIF_F_SG | NETIF_F_FRAGLIST
| NETIF_F_HIGHDMA | NETIF_F_TSO | NETIF_F_IP_CSUM;
} }
...@@ -182,6 +182,7 @@ static struct net_device *new_bridge_dev(const char *name) ...@@ -182,6 +182,7 @@ static struct net_device *new_bridge_dev(const char *name)
br->bridge_id.prio[1] = 0x00; br->bridge_id.prio[1] = 0x00;
memset(br->bridge_id.addr, 0, ETH_ALEN); memset(br->bridge_id.addr, 0, ETH_ALEN);
br->feature_mask = dev->features;
br->stp_enabled = 0; br->stp_enabled = 0;
br->designated_root = br->bridge_id; br->designated_root = br->bridge_id;
br->root_path_cost = 0; br->root_path_cost = 0;
...@@ -349,9 +350,8 @@ void br_features_recompute(struct net_bridge *br) ...@@ -349,9 +350,8 @@ void br_features_recompute(struct net_bridge *br)
struct net_bridge_port *p; struct net_bridge_port *p;
unsigned long features, checksum; unsigned long features, checksum;
features = NETIF_F_SG | NETIF_F_FRAGLIST features = br->feature_mask &~ NETIF_F_IP_CSUM;
| NETIF_F_HIGHDMA | NETIF_F_TSO; checksum = br->feature_mask & NETIF_F_IP_CSUM;
checksum = NETIF_F_IP_CSUM; /* least commmon subset */
list_for_each_entry(p, &br->port_list, list) { list_for_each_entry(p, &br->port_list, list) {
if (!(p->dev->features if (!(p->dev->features
......
...@@ -93,6 +93,7 @@ struct net_bridge ...@@ -93,6 +93,7 @@ struct net_bridge
spinlock_t hash_lock; spinlock_t hash_lock;
struct hlist_head hash[BR_HASH_SIZE]; struct hlist_head hash[BR_HASH_SIZE];
struct list_head age_list; struct list_head age_list;
unsigned long feature_mask;
/* STP */ /* STP */
bridge_id designated_root; bridge_id designated_root;
......
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