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net: convert unicast addr list

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This patch converts unicast address list to standard list_head using
previously introduced struct netdev_hw_addr. It also relaxes the
locking. Original spinlock (still used for multicast addresses) is not
needed and is no longer used for a protection of this list. All
reading and writing takes place under rtnl (with no changes).

I also removed a possibility to specify the length of the address
while adding or deleting unicast address. It's always dev->addr_len.

The convertion touched especially e1000 and ixgbe codes when the
change is not so trivial.

Signed-off-by: Jiri Pirko <jpirko@redhat.com>

 drivers/net/bnx2.c               |   13 +--
 drivers/net/e1000/e1000_main.c   |   24 +++--
 drivers/net/ixgbe/ixgbe_common.c |   14 ++--
 drivers/net/ixgbe/ixgbe_common.h |    4 +-
 drivers/net/ixgbe/ixgbe_main.c   |    6 +-
 drivers/net/ixgbe/ixgbe_type.h   |    4 +-
 drivers/net/macvlan.c            |   11 +-
 drivers/net/mv643xx_eth.c        |   11 +-
 drivers/net/niu.c                |    7 +-
 drivers/net/virtio_net.c         |    7 +-
 drivers/s390/net/qeth_l2_main.c  |    6 +-
 drivers/scsi/fcoe/fcoe.c         |   16 ++--
 include/linux/netdevice.h        |   18 ++--
 net/8021q/vlan.c                 |    4 +-
 net/8021q/vlan_dev.c             |   10 +-
 net/core/dev.c                   |  195 +++++++++++++++++++++++++++-----------
 net/dsa/slave.c                  |   10 +-
 net/packet/af_packet.c           |    4 +-
 18 files changed, 227 insertions(+), 137 deletions(-)
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Jiri Pirko 2009-05-22 23:22:17 +00:00 committed by David S. Miller
parent ae63e808f5
commit ccffad25b5
18 changed files with 227 additions and 137 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

13
drivers/net/bnx2.c
View file

@ -48,6 +48,7 @@
#include <linux/cache.h>
#include <linux/firmware.h>
#include <linux/log2.h>
#include <linux/list.h>
#include "bnx2.h"
#include "bnx2_fw.h"
@ -3310,7 +3311,7 @@ bnx2_set_rx_mode(struct net_device *dev)
{
struct bnx2 *bp = netdev_priv(dev);
u32 rx_mode, sort_mode;
struct dev_addr_list *uc_ptr;
struct netdev_hw_addr *ha;
int i;
if (!netif_running(dev))
@ -3369,21 +3370,19 @@ bnx2_set_rx_mode(struct net_device *dev)
sort_mode |= BNX2_RPM_SORT_USER0_MC_HSH_EN;
}
uc_ptr = NULL;
if (dev->uc_count > BNX2_MAX_UNICAST_ADDRESSES) {
rx_mode |= BNX2_EMAC_RX_MODE_PROMISCUOUS;
sort_mode |= BNX2_RPM_SORT_USER0_PROM_EN |
BNX2_RPM_SORT_USER0_PROM_VLAN;
} else if (!(dev->flags & IFF_PROMISC)) {
uc_ptr = dev->uc_list;
/* Add all entries into to the match filter list */
for (i = 0; i < dev->uc_count; i++) {
bnx2_set_mac_addr(bp, uc_ptr->da_addr,
i = 0;
list_for_each_entry(ha, &dev->uc_list, list) {
bnx2_set_mac_addr(bp, ha->addr,
i + BNX2_START_UNICAST_ADDRESS_INDEX);
sort_mode |= (1 <<
(i + BNX2_START_UNICAST_ADDRESS_INDEX));
uc_ptr = uc_ptr->next;
i++;
}
}

24
drivers/net/e1000/e1000_main.c
View file

@ -2330,7 +2330,8 @@ static void e1000_set_rx_mode(struct net_device *netdev)
{
struct e1000_adapter *adapter = netdev_priv(netdev);
struct e1000_hw *hw = &adapter->hw;
struct dev_addr_list *uc_ptr;
struct netdev_hw_addr *ha;
bool use_uc = false;
struct dev_addr_list *mc_ptr;
u32 rctl;
u32 hash_value;
@ -2369,12 +2370,11 @@ static void e1000_set_rx_mode(struct net_device *netdev)
rctl |= E1000_RCTL_VFE;
}
uc_ptr = NULL;
if (netdev->uc_count > rar_entries - 1) {
rctl |= E1000_RCTL_UPE;
} else if (!(netdev->flags & IFF_PROMISC)) {
rctl &= ~E1000_RCTL_UPE;
uc_ptr = netdev->uc_list;
use_uc = true;
}
ew32(RCTL, rctl);
@ -2392,13 +2392,20 @@ static void e1000_set_rx_mode(struct net_device *netdev)
* if there are not 14 addresses, go ahead and clear the filters
* -- with 82571 controllers only 0-13 entries are filled here
*/
i = 1;
if (use_uc)
list_for_each_entry(ha, &netdev->uc_list, list) {
if (i == rar_entries)
break;
e1000_rar_set(hw, ha->addr, i++);
}
WARN_ON(i == rar_entries);
mc_ptr = netdev->mc_list;
for (i = 1; i < rar_entries; i++) {
if (uc_ptr) {
e1000_rar_set(hw, uc_ptr->da_addr, i);
uc_ptr = uc_ptr->next;
} else if (mc_ptr) {
for (; i < rar_entries; i++) {
if (mc_ptr) {
e1000_rar_set(hw, mc_ptr->da_addr, i);
mc_ptr = mc_ptr->next;
} else {
@ -2408,7 +2415,6 @@ static void e1000_set_rx_mode(struct net_device *netdev)
E1000_WRITE_FLUSH();
}
}
WARN_ON(uc_ptr != NULL);
/* load any remaining addresses into the hash table */

14
drivers/net/ixgbe/ixgbe_common.c
View file

@ -28,6 +28,8 @@
#include <linux/pci.h>
#include <linux/delay.h>
#include <linux/sched.h>
#include <linux/list.h>
#include <linux/netdevice.h>
#include "ixgbe.h"
#include "ixgbe_common.h"
@ -1356,15 +1358,14 @@ static void ixgbe_add_uc_addr(struct ixgbe_hw *hw, u8 *addr, u32 vmdq)
* Drivers using secondary unicast addresses must set user_set_promisc when
* manually putting the device into promiscuous mode.
**/
s32 ixgbe_update_uc_addr_list_generic(struct ixgbe_hw *hw, u8 *addr_list,
u32 addr_count, ixgbe_mc_addr_itr next)
s32 ixgbe_update_uc_addr_list_generic(struct ixgbe_hw *hw,
struct list_head *uc_list)
{
u8 *addr;
u32 i;
u32 old_promisc_setting = hw->addr_ctrl.overflow_promisc;
u32 uc_addr_in_use;
u32 fctrl;
u32 vmdq;
struct netdev_hw_addr *ha;
/*
* Clear accounting of old secondary address list,
@ -1382,10 +1383,9 @@ s32 ixgbe_update_uc_addr_list_generic(struct ixgbe_hw *hw, u8 *addr_list,
}
/* Add the new addresses */
for (i = 0; i < addr_count; i++) {
list_for_each_entry(ha, uc_list, list) {
hw_dbg(hw, " Adding the secondary addresses:\n");
addr = next(hw, &addr_list, &vmdq);
ixgbe_add_uc_addr(hw, addr, vmdq);
ixgbe_add_uc_addr(hw, ha->addr, 0);
}
if (hw->addr_ctrl.overflow_promisc) {

4
drivers/net/ixgbe/ixgbe_common.h
View file

@ -59,8 +59,8 @@ s32 ixgbe_init_rx_addrs_generic(struct ixgbe_hw *hw);
s32 ixgbe_update_mc_addr_list_generic(struct ixgbe_hw *hw, u8 *mc_addr_list,
u32 mc_addr_count,
ixgbe_mc_addr_itr func);
s32 ixgbe_update_uc_addr_list_generic(struct ixgbe_hw *hw, u8 *addr_list,
u32 addr_count, ixgbe_mc_addr_itr func);
s32 ixgbe_update_uc_addr_list_generic(struct ixgbe_hw *hw,
struct list_head *uc_list);
s32 ixgbe_enable_mc_generic(struct ixgbe_hw *hw);
s32 ixgbe_disable_mc_generic(struct ixgbe_hw *hw);
s32 ixgbe_enable_rx_dma_generic(struct ixgbe_hw *hw, u32 regval);

6
drivers/net/ixgbe/ixgbe_main.c
View file

@ -2181,11 +2181,7 @@ static void ixgbe_set_rx_mode(struct net_device *netdev)
IXGBE_WRITE_REG(hw, IXGBE_VLNCTRL, vlnctrl);
/* reprogram secondary unicast list */
addr_count = netdev->uc_count;
if (addr_count)
addr_list = netdev->uc_list->dmi_addr;
hw->mac.ops.update_uc_addr_list(hw, addr_list, addr_count,
ixgbe_addr_list_itr);
hw->mac.ops.update_uc_addr_list(hw, &netdev->uc_list);
/* reprogram multicast list */
addr_count = netdev->mc_count;

4
drivers/net/ixgbe/ixgbe_type.h
View file

@ -30,6 +30,7 @@
#include <linux/types.h>
#include <linux/mdio.h>
#include <linux/list.h>
/* Vendor ID */
#define IXGBE_INTEL_VENDOR_ID 0x8086
@ -2223,8 +2224,7 @@ struct ixgbe_mac_operations {
s32 (*set_vmdq)(struct ixgbe_hw *, u32, u32);
s32 (*clear_vmdq)(struct ixgbe_hw *, u32, u32);
s32 (*init_rx_addrs)(struct ixgbe_hw *);
s32 (*update_uc_addr_list)(struct ixgbe_hw *, u8 *, u32,
ixgbe_mc_addr_itr);
s32 (*update_uc_addr_list)(struct ixgbe_hw *, struct list_head *);
s32 (*update_mc_addr_list)(struct ixgbe_hw *, u8 *, u32,
ixgbe_mc_addr_itr);
s32 (*enable_mc)(struct ixgbe_hw *);

11
drivers/net/macvlan.c
View file

@ -232,7 +232,7 @@ static int macvlan_open(struct net_device *dev)
if (macvlan_addr_busy(vlan->port, dev->dev_addr))
goto out;
err = dev_unicast_add(lowerdev, dev->dev_addr, ETH_ALEN);
err = dev_unicast_add(lowerdev, dev->dev_addr);
if (err < 0)
goto out;
if (dev->flags & IFF_ALLMULTI) {
@ -244,7 +244,7 @@ static int macvlan_open(struct net_device *dev)
return 0;
del_unicast:
dev_unicast_delete(lowerdev, dev->dev_addr, ETH_ALEN);
dev_unicast_delete(lowerdev, dev->dev_addr);
out:
return err;
}
@ -258,7 +258,7 @@ static int macvlan_stop(struct net_device *dev)
if (dev->flags & IFF_ALLMULTI)
dev_set_allmulti(lowerdev, -1);
dev_unicast_delete(lowerdev, dev->dev_addr, ETH_ALEN);
dev_unicast_delete(lowerdev, dev->dev_addr);
macvlan_hash_del(vlan);
return 0;
@ -282,10 +282,11 @@ static int macvlan_set_mac_address(struct net_device *dev, void *p)
if (macvlan_addr_busy(vlan->port, addr->sa_data))
return -EBUSY;
if ((err = dev_unicast_add(lowerdev, addr->sa_data, ETH_ALEN)))
err = dev_unicast_add(lowerdev, addr->sa_data);
if (err)
return err;
dev_unicast_delete(lowerdev, dev->dev_addr, ETH_ALEN);
dev_unicast_delete(lowerdev, dev->dev_addr);
macvlan_hash_change_addr(vlan, addr->sa_data);
}

11
drivers/net/mv643xx_eth.c
View file

@ -55,6 +55,7 @@
#include <linux/types.h>
#include <linux/inet_lro.h>
#include <asm/system.h>
#include <linux/list.h>
static char mv643xx_eth_driver_name[] = "mv643xx_eth";
static char mv643xx_eth_driver_version[] = "1.4";
@ -1721,20 +1722,20 @@ static void uc_addr_set(struct mv643xx_eth_private *mp, unsigned char *addr)
static u32 uc_addr_filter_mask(struct net_device *dev)
{
struct dev_addr_list *uc_ptr;
struct netdev_hw_addr *ha;
u32 nibbles;
if (dev->flags & IFF_PROMISC)
return 0;
nibbles = 1 << (dev->dev_addr[5] & 0x0f);
for (uc_ptr = dev->uc_list; uc_ptr != NULL; uc_ptr = uc_ptr->next) {
if (memcmp(dev->dev_addr, uc_ptr->da_addr, 5))
list_for_each_entry(ha, &dev->uc_list, list) {
if (memcmp(dev->dev_addr, ha->addr, 5))
return 0;
if ((dev->dev_addr[5] ^ uc_ptr->da_addr[5]) & 0xf0)
if ((dev->dev_addr[5] ^ ha->addr[5]) & 0xf0)
return 0;
nibbles |= 1 << (uc_ptr->da_addr[5] & 0x0f);
nibbles |= 1 << (ha->addr[5] & 0x0f);
}
return nibbles;

7
drivers/net/niu.c
View file

@ -22,6 +22,7 @@
#include <linux/log2.h>
#include <linux/jiffies.h>
#include <linux/crc32.h>
#include <linux/list.h>
#include <linux/io.h>
@ -6362,6 +6363,7 @@ static void niu_set_rx_mode(struct net_device *dev)
struct niu *np = netdev_priv(dev);
int i, alt_cnt, err;
struct dev_addr_list *addr;
struct netdev_hw_addr *ha;
unsigned long flags;
u16 hash[16] = { 0, };
@ -6383,9 +6385,8 @@ static void niu_set_rx_mode(struct net_device *dev)
if (alt_cnt) {
int index = 0;
for (addr = dev->uc_list; addr; addr = addr->next) {
err = niu_set_alt_mac(np, index,
addr->da_addr);
list_for_each_entry(ha, &dev->uc_list, list) {
err = niu_set_alt_mac(np, index, ha->addr);
if (err)
printk(KERN_WARNING PFX "%s: Error %d "
"adding alt mac %d\n",

7
drivers/net/virtio_net.c
View file

@ -680,6 +680,7 @@ static void virtnet_set_rx_mode(struct net_device *dev)
u8 promisc, allmulti;
struct virtio_net_ctrl_mac *mac_data;
struct dev_addr_list *addr;
struct netdev_hw_addr *ha;
void *buf;
int i;
@ -718,9 +719,9 @@ static void virtnet_set_rx_mode(struct net_device *dev)
/* Store the unicast list and count in the front of the buffer */
mac_data->entries = dev->uc_count;
addr = dev->uc_list;
for (i = 0; i < dev->uc_count; i++, addr = addr->next)
memcpy(&mac_data->macs[i][0], addr->da_addr, ETH_ALEN);
i = 0;
list_for_each_entry(ha, &dev->uc_list, list)
memcpy(&mac_data->macs[i++][0], ha->addr, ETH_ALEN);
sg_set_buf(&sg[0], mac_data,
sizeof(mac_data->entries) + (dev->uc_count * ETH_ALEN));

6
drivers/s390/net/qeth_l2_main.c
View file

@ -19,6 +19,7 @@
#include <linux/etherdevice.h>
#include <linux/mii.h>
#include <linux/ip.h>
#include <linux/list.h>
#include "qeth_core.h"
@ -640,6 +641,7 @@ static void qeth_l2_set_multicast_list(struct net_device *dev)
{
struct qeth_card *card = dev->ml_priv;
struct dev_addr_list *dm;
struct netdev_hw_addr *ha;
if (card->info.type == QETH_CARD_TYPE_OSN)
return ;
@ -653,8 +655,8 @@ static void qeth_l2_set_multicast_list(struct net_device *dev)
for (dm = dev->mc_list; dm; dm = dm->next)
qeth_l2_add_mc(card, dm->da_addr, 0);
for (dm = dev->uc_list; dm; dm = dm->next)
qeth_l2_add_mc(card, dm->da_addr, 1);
list_for_each_entry(ha, &dev->uc_list, list)
qeth_l2_add_mc(card, ha->addr, 1);
spin_unlock_bh(&card->mclock);
if (!qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))

16
drivers/scsi/fcoe/fcoe.c
View file

@ -182,8 +182,8 @@ static void fcoe_update_src_mac(struct fcoe_ctlr *fip, u8 *old, u8 *new)
fc = fcoe_from_ctlr(fip);
rtnl_lock();
if (!is_zero_ether_addr(old))
dev_unicast_delete(fc->real_dev, old, ETH_ALEN);
dev_unicast_add(fc->real_dev, new, ETH_ALEN);
dev_unicast_delete(fc->real_dev, old);
dev_unicast_add(fc->real_dev, new);
rtnl_unlock();
}
@ -233,13 +233,11 @@ void fcoe_netdev_cleanup(struct fcoe_softc *fc)
/* Delete secondary MAC addresses */
rtnl_lock();
memcpy(flogi_maddr, (u8[6]) FC_FCOE_FLOGI_MAC, ETH_ALEN);
dev_unicast_delete(fc->real_dev, flogi_maddr, ETH_ALEN);
dev_unicast_delete(fc->real_dev, flogi_maddr);
if (!is_zero_ether_addr(fc->ctlr.data_src_addr))
dev_unicast_delete(fc->real_dev,
fc->ctlr.data_src_addr, ETH_ALEN);
dev_unicast_delete(fc->real_dev, fc->ctlr.data_src_addr);
if (fc->ctlr.spma)
dev_unicast_delete(fc->real_dev,
fc->ctlr.ctl_src_addr, ETH_ALEN);
dev_unicast_delete(fc->real_dev, fc->ctlr.ctl_src_addr);
dev_mc_delete(fc->real_dev, FIP_ALL_ENODE_MACS, ETH_ALEN, 0);
rtnl_unlock();
}
@ -347,9 +345,9 @@ static int fcoe_netdev_config(struct fc_lport *lp, struct net_device *netdev)
*/
rtnl_lock();
memcpy(flogi_maddr, (u8[6]) FC_FCOE_FLOGI_MAC, ETH_ALEN);
dev_unicast_add(fc->real_dev, flogi_maddr, ETH_ALEN);
dev_unicast_add(fc->real_dev, flogi_maddr);
if (fc->ctlr.spma)
dev_unicast_add(fc->real_dev, fc->ctlr.ctl_src_addr, ETH_ALEN);
dev_unicast_add(fc->real_dev, fc->ctlr.ctl_src_addr);
dev_mc_add(fc->real_dev, FIP_ALL_ENODE_MACS, ETH_ALEN, 0);
rtnl_unlock();

18
include/linux/netdevice.h
View file

@ -215,9 +215,12 @@ struct netdev_hw_addr {
struct list_head list;
unsigned char addr[MAX_ADDR_LEN];
unsigned char type;
#define NETDEV_HW_ADDR_T_LAN 1
#define NETDEV_HW_ADDR_T_SAN 2
#define NETDEV_HW_ADDR_T_SLAVE 3
#define NETDEV_HW_ADDR_T_LAN 1
#define NETDEV_HW_ADDR_T_SAN 2
#define NETDEV_HW_ADDR_T_SLAVE 3
#define NETDEV_HW_ADDR_T_UNICAST 4
int refcount;
bool synced;
struct rcu_head rcu_head;
};
@ -773,10 +776,11 @@ struct net_device
unsigned char addr_len; /* hardware address length */
unsigned short dev_id; /* for shared network cards */
spinlock_t addr_list_lock;
struct dev_addr_list *uc_list; /* Secondary unicast mac addresses */
struct list_head uc_list; /* Secondary unicast mac
addresses */
int uc_count; /* Number of installed ucasts */
int uc_promisc;
spinlock_t addr_list_lock;
struct dev_addr_list *mc_list; /* Multicast mac addresses */
int mc_count; /* Number of installed mcasts */
unsigned int promiscuity;
@ -1836,8 +1840,8 @@ extern int dev_addr_del_multiple(struct net_device *to_dev,
/* Functions used for secondary unicast and multicast support */
extern void dev_set_rx_mode(struct net_device *dev);
extern void __dev_set_rx_mode(struct net_device *dev);
extern int dev_unicast_delete(struct net_device *dev, void *addr, int alen);
extern int dev_unicast_add(struct net_device *dev, void *addr, int alen);
extern int dev_unicast_delete(struct net_device *dev, void *addr);
extern int dev_unicast_add(struct net_device *dev, void *addr);
extern int dev_unicast_sync(struct net_device *to, struct net_device *from);
extern void dev_unicast_unsync(struct net_device *to, struct net_device *from);
extern int dev_mc_delete(struct net_device *dev, void *addr, int alen, int all);

4
net/8021q/vlan.c
View file

@ -378,13 +378,13 @@ static void vlan_sync_address(struct net_device *dev,
* the new address */
if (compare_ether_addr(vlandev->dev_addr, vlan->real_dev_addr) &&
!compare_ether_addr(vlandev->dev_addr, dev->dev_addr))
dev_unicast_delete(dev, vlandev->dev_addr, ETH_ALEN);
dev_unicast_delete(dev, vlandev->dev_addr);
/* vlan address was equal to the old address and is different from
* the new address */
if (!compare_ether_addr(vlandev->dev_addr, vlan->real_dev_addr) &&
compare_ether_addr(vlandev->dev_addr, dev->dev_addr))
dev_unicast_add(dev, vlandev->dev_addr, ETH_ALEN);
dev_unicast_add(dev, vlandev->dev_addr);
memcpy(vlan->real_dev_addr, dev->dev_addr, ETH_ALEN);
}

10
net/8021q/vlan_dev.c
View file

@ -441,7 +441,7 @@ static int vlan_dev_open(struct net_device *dev)
return -ENETDOWN;
if (compare_ether_addr(dev->dev_addr, real_dev->dev_addr)) {
err = dev_unicast_add(real_dev, dev->dev_addr, ETH_ALEN);
err = dev_unicast_add(real_dev, dev->dev_addr);
if (err < 0)
goto out;
}
@ -470,7 +470,7 @@ clear_allmulti:
dev_set_allmulti(real_dev, -1);
del_unicast:
if (compare_ether_addr(dev->dev_addr, real_dev->dev_addr))
dev_unicast_delete(real_dev, dev->dev_addr, ETH_ALEN);
dev_unicast_delete(real_dev, dev->dev_addr);
out:
netif_carrier_off(dev);
return err;
@ -492,7 +492,7 @@ static int vlan_dev_stop(struct net_device *dev)
dev_set_promiscuity(real_dev, -1);
if (compare_ether_addr(dev->dev_addr, real_dev->dev_addr))
dev_unicast_delete(real_dev, dev->dev_addr, dev->addr_len);
dev_unicast_delete(real_dev, dev->dev_addr);
netif_carrier_off(dev);
return 0;
@ -511,13 +511,13 @@ static int vlan_dev_set_mac_address(struct net_device *dev, void *p)
goto out;
if (compare_ether_addr(addr->sa_data, real_dev->dev_addr)) {
err = dev_unicast_add(real_dev, addr->sa_data, ETH_ALEN);
err = dev_unicast_add(real_dev, addr->sa_data);
if (err < 0)
return err;
}
if (compare_ether_addr(dev->dev_addr, real_dev->dev_addr))
dev_unicast_delete(real_dev, dev->dev_addr, ETH_ALEN);
dev_unicast_delete(real_dev, dev->dev_addr);
out:
memcpy(dev->dev_addr, addr->sa_data, ETH_ALEN);

195
net/core/dev.c
View file

@ -3473,8 +3473,9 @@ void dev_set_rx_mode(struct net_device *dev)
/* hw addresses list handling functions */
static int __hw_addr_add(struct list_head *list, unsigned char *addr,
int addr_len, unsigned char addr_type)
static int __hw_addr_add(struct list_head *list, int *delta,
unsigned char *addr, int addr_len,
unsigned char addr_type)
{
struct netdev_hw_addr *ha;
int alloc_size;
@ -3482,6 +3483,15 @@ static int __hw_addr_add(struct list_head *list, unsigned char *addr,
if (addr_len > MAX_ADDR_LEN)
return -EINVAL;
list_for_each_entry(ha, list, list) {
if (!memcmp(ha->addr, addr, addr_len) &&
ha->type == addr_type) {
ha->refcount++;
return 0;
}
}
alloc_size = sizeof(*ha);
if (alloc_size < L1_CACHE_BYTES)
alloc_size = L1_CACHE_BYTES;
@ -3490,7 +3500,11 @@ static int __hw_addr_add(struct list_head *list, unsigned char *addr,
return -ENOMEM;
memcpy(ha->addr, addr, addr_len);
ha->type = addr_type;
ha->refcount = 1;
ha->synced = false;
list_add_tail_rcu(&ha->list, list);
if (delta)
(*delta)++;
return 0;
}
@ -3502,29 +3516,30 @@ static void ha_rcu_free(struct rcu_head *head)
kfree(ha);
}
static int __hw_addr_del_ii(struct list_head *list, unsigned char *addr,
int addr_len, unsigned char addr_type,
int ignore_index)
static int __hw_addr_del(struct list_head *list, int *delta,
unsigned char *addr, int addr_len,
unsigned char addr_type)
{
struct netdev_hw_addr *ha;
int i = 0;
list_for_each_entry(ha, list, list) {
if (i++ != ignore_index &&
!memcmp(ha->addr, addr, addr_len) &&
if (!memcmp(ha->addr, addr, addr_len) &&
(ha->type == addr_type || !addr_type)) {
if (--ha->refcount)
return 0;
list_del_rcu(&ha->list);
call_rcu(&ha->rcu_head, ha_rcu_free);
if (delta)
(*delta)--;
return 0;
}
}
return -ENOENT;
}
static int __hw_addr_add_multiple_ii(struct list_head *to_list,
struct list_head *from_list,
int addr_len, unsigned char addr_type,
int ignore_index)
static int __hw_addr_add_multiple(struct list_head *to_list, int *to_delta,
struct list_head *from_list, int addr_len,
unsigned char addr_type)
{
int err;
struct netdev_hw_addr *ha, *ha2;
@ -3532,7 +3547,8 @@ static int __hw_addr_add_multiple_ii(struct list_head *to_list,
list_for_each_entry(ha, from_list, list) {
type = addr_type ? addr_type : ha->type;
err = __hw_addr_add(to_list, ha->addr, addr_len, type);
err = __hw_addr_add(to_list, to_delta, ha->addr,
addr_len, type);
if (err)
goto unroll;
}
@ -3543,27 +3559,69 @@ unroll:
if (ha2 == ha)
break;
type = addr_type ? addr_type : ha2->type;
__hw_addr_del_ii(to_list, ha2->addr, addr_len, type,
ignore_index);
__hw_addr_del(to_list, to_delta, ha2->addr,
addr_len, type);
}
return err;
}
static void __hw_addr_del_multiple_ii(struct list_head *to_list,
struct list_head *from_list,
int addr_len, unsigned char addr_type,
int ignore_index)
static void __hw_addr_del_multiple(struct list_head *to_list, int *to_delta,
struct list_head *from_list, int addr_len,
unsigned char addr_type)
{
struct netdev_hw_addr *ha;
unsigned char type;
list_for_each_entry(ha, from_list, list) {
type = addr_type ? addr_type : ha->type;
__hw_addr_del_ii(to_list, ha->addr, addr_len, addr_type,
ignore_index);
__hw_addr_del(to_list, to_delta, ha->addr,
addr_len, addr_type);
}
}
static int __hw_addr_sync(struct list_head *to_list, int *to_delta,
struct list_head *from_list, int *from_delta,
int addr_len)
{
int err = 0;
struct netdev_hw_addr *ha, *tmp;
list_for_each_entry_safe(ha, tmp, from_list, list) {
if (!ha->synced) {
err = __hw_addr_add(to_list, to_delta, ha->addr,
addr_len, ha->type);
if (err)
break;
ha->synced = true;
ha->refcount++;
} else if (ha->refcount == 1) {
__hw_addr_del(to_list, to_delta, ha->addr,
addr_len, ha->type);
__hw_addr_del(from_list, from_delta, ha->addr,
addr_len, ha->type);
}
}
return err;
}
static void __hw_addr_unsync(struct list_head *to_list, int *to_delta,
struct list_head *from_list, int *from_delta,
int addr_len)
{
struct netdev_hw_addr *ha, *tmp;
list_for_each_entry_safe(ha, tmp, from_list, list) {
if (ha->synced) {
__hw_addr_del(to_list, to_delta, ha->addr,
addr_len, ha->type);
ha->synced = false;
__hw_addr_del(from_list, from_delta, ha->addr,
addr_len, ha->type);
}
}
}
static void __hw_addr_flush(struct list_head *list)
{
struct netdev_hw_addr *ha, *tmp;
@ -3594,7 +3652,7 @@ static int dev_addr_init(struct net_device *dev)
INIT_LIST_HEAD(&dev->dev_addr_list);
memset(addr, 0, sizeof(*addr));
err = __hw_addr_add(&dev->dev_addr_list, addr, sizeof(*addr),
err = __hw_addr_add(&dev->dev_addr_list, NULL, addr, sizeof(*addr),
NETDEV_HW_ADDR_T_LAN);
if (!err) {
/*
@ -3626,7 +3684,7 @@ int dev_addr_add(struct net_device *dev, unsigned char *addr,
ASSERT_RTNL();
err = __hw_addr_add(&dev->dev_addr_list, addr, dev->addr_len,
err = __hw_addr_add(&dev->dev_addr_list, NULL, addr, dev->addr_len,
addr_type);
if (!err)
call_netdevice_notifiers(NETDEV_CHANGEADDR, dev);
@ -3649,11 +3707,20 @@ int dev_addr_del(struct net_device *dev, unsigned char *addr,
unsigned char addr_type)
{
int err;
struct netdev_hw_addr *ha;
ASSERT_RTNL();
err = __hw_addr_del_ii(&dev->dev_addr_list, addr, dev->addr_len,
addr_type, 0);
/*
* We can not remove the first address from the list because
* dev->dev_addr points to that.
*/
ha = list_first_entry(&dev->dev_addr_list, struct netdev_hw_addr, list);
if (ha->addr == dev->dev_addr && ha->refcount == 1)
return -ENOENT;
err = __hw_addr_del(&dev->dev_addr_list, NULL, addr, dev->addr_len,
addr_type);
if (!err)
call_netdevice_notifiers(NETDEV_CHANGEADDR, dev);
return err;
@ -3680,9 +3747,9 @@ int dev_addr_add_multiple(struct net_device *to_dev,
if (from_dev->addr_len != to_dev->addr_len)
return -EINVAL;
err = __hw_addr_add_multiple_ii(&to_dev->dev_addr_list,
&from_dev->dev_addr_list,
to_dev->addr_len, addr_type, 0);
err = __hw_addr_add_multiple(&to_dev->dev_addr_list, NULL,
&from_dev->dev_addr_list,
to_dev->addr_len, addr_type);
if (!err)
call_netdevice_notifiers(NETDEV_CHANGEADDR, to_dev);
return err;
@ -3707,9 +3774,9 @@ int dev_addr_del_multiple(struct net_device *to_dev,
if (from_dev->addr_len != to_dev->addr_len)
return -EINVAL;
__hw_addr_del_multiple_ii(&to_dev->dev_addr_list,
&from_dev->dev_addr_list,
to_dev->addr_len, addr_type, 0);
__hw_addr_del_multiple(&to_dev->dev_addr_list, NULL,
&from_dev->dev_addr_list,
to_dev->addr_len, addr_type);
call_netdevice_notifiers(NETDEV_CHANGEADDR, to_dev);
return 0;
}
@ -3779,24 +3846,22 @@ int __dev_addr_add(struct dev_addr_list **list, int *count,
* dev_unicast_delete - Release secondary unicast address.
* @dev: device
* @addr: address to delete
* @alen: length of @addr
*
* Release reference to a secondary unicast address and remove it
* from the device if the reference count drops to zero.
*
* The caller must hold the rtnl_mutex.
*/
int dev_unicast_delete(struct net_device *dev, void *addr, int alen)
int dev_unicast_delete(struct net_device *dev, void *addr)
{
int err;
ASSERT_RTNL();
netif_addr_lock_bh(dev);
err = __dev_addr_delete(&dev->uc_list, &dev->uc_count, addr, alen, 0);
err = __hw_addr_del(&dev->uc_list, &dev->uc_count, addr,
dev->addr_len, NETDEV_HW_ADDR_T_UNICAST);
if (!err)
__dev_set_rx_mode(dev);
netif_addr_unlock_bh(dev);
return err;
}
EXPORT_SYMBOL(dev_unicast_delete);
@ -3805,24 +3870,22 @@ EXPORT_SYMBOL(dev_unicast_delete);
* dev_unicast_add - add a secondary unicast address
* @dev: device
* @addr: address to add
* @alen: length of @addr
*
* Add a secondary unicast address to the device or increase
* the reference count if it already exists.
*
* The caller must hold the rtnl_mutex.
*/
int dev_unicast_add(struct net_device *dev, void *addr, int alen)
int dev_unicast_add(struct net_device *dev, void *addr)
{
int err;
ASSERT_RTNL();
netif_addr_lock_bh(dev);
err = __dev_addr_add(&dev->uc_list, &dev->uc_count, addr, alen, 0);
err = __hw_addr_add(&dev->uc_list, &dev->uc_count, addr,
dev->addr_len, NETDEV_HW_ADDR_T_UNICAST);
if (!err)
__dev_set_rx_mode(dev);
netif_addr_unlock_bh(dev);
return err;
}
EXPORT_SYMBOL(dev_unicast_add);
@ -3879,8 +3942,7 @@ void __dev_addr_unsync(struct dev_addr_list **to, int *to_count,
* @from: source device
*
* Add newly added addresses to the destination device and release
* addresses that have no users left. The source device must be
* locked by netif_tx_lock_bh.
* addresses that have no users left.
*
* This function is intended to be called from the dev->set_rx_mode
* function of layered software devices.
@ -3889,12 +3951,15 @@ int dev_unicast_sync(struct net_device *to, struct net_device *from)
{
int err = 0;
netif_addr_lock_bh(to);
err = __dev_addr_sync(&to->uc_list, &to->uc_count,
&from->uc_list, &from->uc_count);
ASSERT_RTNL();
if (to->addr_len != from->addr_len)
return -EINVAL;
err = __hw_addr_sync(&to->uc_list, &to->uc_count,
&from->uc_list, &from->uc_count, to->addr_len);
if (!err)
__dev_set_rx_mode(to);
netif_addr_unlock_bh(to);
return err;
}
EXPORT_SYMBOL(dev_unicast_sync);
@ -3910,18 +3975,33 @@ EXPORT_SYMBOL(dev_unicast_sync);
*/
void dev_unicast_unsync(struct net_device *to, struct net_device *from)
{
netif_addr_lock_bh(from);
netif_addr_lock(to);
ASSERT_RTNL();
__dev_addr_unsync(&to->uc_list, &to->uc_count,
&from->uc_list, &from->uc_count);
if (to->addr_len != from->addr_len)
return;
__hw_addr_unsync(&to->uc_list, &to->uc_count,
&from->uc_list, &from->uc_count, to->addr_len);
__dev_set_rx_mode(to);
netif_addr_unlock(to);
netif_addr_unlock_bh(from);
}
EXPORT_SYMBOL(dev_unicast_unsync);
static void dev_unicast_flush(struct net_device *dev)
{
/* rtnl_mutex must be held here */
__hw_addr_flush(&dev->uc_list);
dev->uc_count = 0;
}
static void dev_unicast_init(struct net_device *dev)
{
/* rtnl_mutex must be held here */
INIT_LIST_HEAD(&dev->uc_list);
}
static void __dev_addr_discard(struct dev_addr_list **list)
{
struct dev_addr_list *tmp;
@ -3940,9 +4020,6 @@ static void dev_addr_discard(struct net_device *dev)
{
netif_addr_lock_bh(dev);
__dev_addr_discard(&dev->uc_list);
dev->uc_count = 0;
__dev_addr_discard(&dev->mc_list);
dev->mc_count = 0;
@ -4535,6 +4612,7 @@ static void rollback_registered(struct net_device *dev)
/*
* Flush the unicast and multicast chains
*/
dev_unicast_flush(dev);
dev_addr_discard(dev);
if (dev->netdev_ops->ndo_uninit)
@ -5020,6 +5098,8 @@ struct net_device *alloc_netdev_mq(int sizeof_priv, const char *name,
if (dev_addr_init(dev))
goto free_tx;
dev_unicast_init(dev);
dev_net_set(dev, &init_net);
dev->_tx = tx;
@ -5223,6 +5303,7 @@ int dev_change_net_namespace(struct net_device *dev, struct net *net, const char
/*
* Flush the unicast and multicast chains
*/
dev_unicast_flush(dev);
dev_addr_discard(dev);
netdev_unregister_kobject(dev);

10
net/dsa/slave.c
View file

@ -67,7 +67,7 @@ static int dsa_slave_open(struct net_device *dev)
return -ENETDOWN;
if (compare_ether_addr(dev->dev_addr, master->dev_addr)) {
err = dev_unicast_add(master, dev->dev_addr, ETH_ALEN);
err = dev_unicast_add(master, dev->dev_addr);
if (err < 0)
goto out;
}
@ -90,7 +90,7 @@ clear_allmulti:
dev_set_allmulti(master, -1);
del_unicast:
if (compare_ether_addr(dev->dev_addr, master->dev_addr))
dev_unicast_delete(master, dev->dev_addr, ETH_ALEN);
dev_unicast_delete(master, dev->dev_addr);
out:
return err;
}
@ -108,7 +108,7 @@ static int dsa_slave_close(struct net_device *dev)
dev_set_promiscuity(master, -1);
if (compare_ether_addr(dev->dev_addr, master->dev_addr))
dev_unicast_delete(master, dev->dev_addr, ETH_ALEN);
dev_unicast_delete(master, dev->dev_addr);
return 0;
}
@ -147,13 +147,13 @@ static int dsa_slave_set_mac_address(struct net_device *dev, void *a)
goto out;
if (compare_ether_addr(addr->sa_data, master->dev_addr)) {
err = dev_unicast_add(master, addr->sa_data, ETH_ALEN);
err = dev_unicast_add(master, addr->sa_data);
if (err < 0)
return err;
}
if (compare_ether_addr(dev->dev_addr, master->dev_addr))
dev_unicast_delete(master, dev->dev_addr, ETH_ALEN);
dev_unicast_delete(master, dev->dev_addr);
out:
memcpy(dev->dev_addr, addr->sa_data, ETH_ALEN);

4
net/packet/af_packet.c
View file

@ -1582,9 +1582,9 @@ static int packet_dev_mc(struct net_device *dev, struct packet_mclist *i,
break;
case PACKET_MR_UNICAST:
if (what > 0)
return dev_unicast_add(dev, i->addr, i->alen);
return dev_unicast_add(dev, i->addr);
else
return dev_unicast_delete(dev, i->addr, i->alen);
return dev_unicast_delete(dev, i->addr);
break;
default:;
}