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ixgb: eliminate checkstack warnings

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Really trivial fix, use kmalloc/kfree instead of stack space.
use static const instead of const to further reduce stack usage.

V2: reflect changes suggested by Joe Perches

before:
[jbrandeb@jbrandeb-mobl2 linux-2.6]$ make checkstack|grep '\[ixgb\]'
0x00000fc1 ixgb_set_multi [ixgb]:                       768
0x00001031 ixgb_set_multi [ixgb]:                       768
0x000010f2 ixgb_set_multi [ixgb]:                       768
0x061c ixgb_check_options [ixgb]:                       448
0x09c3 ixgb_check_options [ixgb]:                       448
0x0000649e ixgb_set_ringparam [ixgb]:                   192
0x0000130d ixgb_xmit_frame [ixgb]:                      184
0x000019e0 ixgb_xmit_frame [ixgb]:                      184
0x00002267 ixgb_clean [ixgb]:                           152
0x00002673 ixgb_clean [ixgb]:                           152

after:
0x000064ee ixgb_set_ringparam [ixgb]:                   192
0x0000135d ixgb_xmit_frame [ixgb]:                      184
0x00001a30 ixgb_xmit_frame [ixgb]:                      184
0x000022b7 ixgb_clean [ixgb]:                           152
0x000026c3 ixgb_clean [ixgb]:                           152

Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Jesse Brandeburg 2011-09-23 02:11:29 +00:00 committed by David S. Miller
parent 120deefa0b
commit ac5ac789eb
7 changed files with 28 additions and 24 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/net/ethernet/intel/ixgb/ixgb_ee.c
View File

@ -559,7 +559,7 @@ ixgb_get_ee_mac_addr(struct ixgb_hw *hw,
ENTER();
if (ixgb_check_and_get_eeprom_data(hw) == true) {
for (i = 0; i < IXGB_ETH_LENGTH_OF_ADDRESS; i++) {
for (i = 0; i < ETH_ALEN; i++) {
mac_addr[i] = ee_map->mac_addr[i];
}
pr_debug("eeprom mac address = %pM\n", mac_addr);

4
drivers/net/ethernet/intel/ixgb/ixgb_ee.h
View File

@ -31,8 +31,6 @@
#define IXGB_EEPROM_SIZE 64 /* Size in words */
#define IXGB_ETH_LENGTH_OF_ADDRESS 6
/* EEPROM Commands */
#define EEPROM_READ_OPCODE 0x6 /* EEPROM read opcode */
#define EEPROM_WRITE_OPCODE 0x5 /* EEPROM write opcode */
@ -75,7 +73,7 @@
/* EEPROM structure */
struct ixgb_ee_map_type {
u8 mac_addr[IXGB_ETH_LENGTH_OF_ADDRESS];
u8 mac_addr[ETH_ALEN];
__le16 compatibility;
__le16 reserved1[4];
__le32 pba_number;

2
drivers/net/ethernet/intel/ixgb/ixgb_hw.c
View File

@ -478,7 +478,7 @@ ixgb_mc_addr_list_update(struct ixgb_hw *hw,
ixgb_mta_set(hw, hash_value);
}
mca += IXGB_ETH_LENGTH_OF_ADDRESS + pad;
mca += ETH_ALEN + pad;
}
pr_debug("MC Update Complete\n");

4
drivers/net/ethernet/intel/ixgb/ixgb_hw.h
View File

@ -97,8 +97,6 @@ typedef enum {
ixgb_bus_width_64
} ixgb_bus_width;
#define IXGB_ETH_LENGTH_OF_ADDRESS 6
#define IXGB_EEPROM_SIZE 64 /* Size in words */
#define SPEED_10000 10000
@ -674,7 +672,7 @@ struct ixgb_hw {
u32 max_frame_size; /* Maximum frame size supported */
u32 mc_filter_type; /* Multicast filter hash type */
u32 num_mc_addrs; /* Number of current Multicast addrs */
u8 curr_mac_addr[IXGB_ETH_LENGTH_OF_ADDRESS]; /* Individual address currently programmed in MAC */
u8 curr_mac_addr[ETH_ALEN]; /* Individual address currently programmed in MAC */
u32 num_tx_desc; /* Number of Transmit descriptors */
u32 num_rx_desc; /* Number of Receive descriptors */
u32 rx_buffer_size; /* Size of Receive buffer */

21
drivers/net/ethernet/intel/ixgb/ixgb_main.c
View File

@ -1093,7 +1093,6 @@ ixgb_set_multi(struct net_device *netdev)
struct ixgb_hw *hw = &adapter->hw;
struct netdev_hw_addr *ha;
u32 rctl;
int i;
/* Check for Promiscuous and All Multicast modes */
@ -1120,19 +1119,27 @@ ixgb_set_multi(struct net_device *netdev)
rctl |= IXGB_RCTL_MPE;
IXGB_WRITE_REG(hw, RCTL, rctl);
} else {
u8 mta[IXGB_MAX_NUM_MULTICAST_ADDRESSES *
IXGB_ETH_LENGTH_OF_ADDRESS];
u8 *mta = kmalloc(IXGB_MAX_NUM_MULTICAST_ADDRESSES *
ETH_ALEN, GFP_ATOMIC);
u8 *addr;
if (!mta) {
pr_err("allocation of multicast memory failed\n");
goto alloc_failed;
}
IXGB_WRITE_REG(hw, RCTL, rctl);
i = 0;
netdev_for_each_mc_addr(ha, netdev)
memcpy(&mta[i++ * IXGB_ETH_LENGTH_OF_ADDRESS],
ha->addr, IXGB_ETH_LENGTH_OF_ADDRESS);
addr = mta;
netdev_for_each_mc_addr(ha, netdev) {
memcpy(addr, ha->addr, ETH_ALEN);
addr += ETH_ALEN;
}
ixgb_mc_addr_list_update(hw, mta, netdev_mc_count(netdev), 0);
kfree(mta);
}
alloc_failed:
if (netdev->features & NETIF_F_HW_VLAN_RX)
ixgb_vlan_strip_enable(adapter);
else

1
drivers/net/ethernet/intel/ixgb/ixgb_osdep.h
View File

@ -38,6 +38,7 @@
#include <asm/io.h>
#include <linux/interrupt.h>
#include <linux/sched.h>
#include <linux/if_ether.h>
#undef ASSERT
#define ASSERT(x) BUG_ON(!(x))

18
drivers/net/ethernet/intel/ixgb/ixgb_param.c
View File

@ -267,7 +267,7 @@ ixgb_check_options(struct ixgb_adapter *adapter)
}
{ /* Transmit Descriptor Count */
const struct ixgb_option opt = {
static const struct ixgb_option opt = {
.type = range_option,
.name = "Transmit Descriptors",
.err = "using default of " __MODULE_STRING(DEFAULT_TXD),
@ -286,7 +286,7 @@ ixgb_check_options(struct ixgb_adapter *adapter)
tx_ring->count = ALIGN(tx_ring->count, IXGB_REQ_TX_DESCRIPTOR_MULTIPLE);
}
{ /* Receive Descriptor Count */
const struct ixgb_option opt = {
static const struct ixgb_option opt = {
.type = range_option,
.name = "Receive Descriptors",
.err = "using default of " __MODULE_STRING(DEFAULT_RXD),
@ -305,7 +305,7 @@ ixgb_check_options(struct ixgb_adapter *adapter)
rx_ring->count = ALIGN(rx_ring->count, IXGB_REQ_RX_DESCRIPTOR_MULTIPLE);
}
{ /* Receive Checksum Offload Enable */
const struct ixgb_option opt = {
static const struct ixgb_option opt = {
.type = enable_option,
.name = "Receive Checksum Offload",
.err = "defaulting to Enabled",
@ -348,7 +348,7 @@ ixgb_check_options(struct ixgb_adapter *adapter)
}
}
{ /* Receive Flow Control High Threshold */
const struct ixgb_option opt = {
static const struct ixgb_option opt = {
.type = range_option,
.name = "Rx Flow Control High Threshold",
.err = "using default of " __MODULE_STRING(DEFAULT_FCRTH),
@ -367,7 +367,7 @@ ixgb_check_options(struct ixgb_adapter *adapter)
pr_info("Ignoring RxFCHighThresh when no RxFC\n");
}
{ /* Receive Flow Control Low Threshold */
const struct ixgb_option opt = {
static const struct ixgb_option opt = {
.type = range_option,
.name = "Rx Flow Control Low Threshold",
.err = "using default of " __MODULE_STRING(DEFAULT_FCRTL),
@ -386,7 +386,7 @@ ixgb_check_options(struct ixgb_adapter *adapter)
pr_info("Ignoring RxFCLowThresh when no RxFC\n");
}
{ /* Flow Control Pause Time Request*/
const struct ixgb_option opt = {
static const struct ixgb_option opt = {
.type = range_option,
.name = "Flow Control Pause Time Request",
.err = "using default of "__MODULE_STRING(DEFAULT_FCPAUSE),
@ -416,7 +416,7 @@ ixgb_check_options(struct ixgb_adapter *adapter)
}
}
{ /* Receive Interrupt Delay */
const struct ixgb_option opt = {
static const struct ixgb_option opt = {
.type = range_option,
.name = "Receive Interrupt Delay",
.err = "using default of " __MODULE_STRING(DEFAULT_RDTR),
@ -433,7 +433,7 @@ ixgb_check_options(struct ixgb_adapter *adapter)
}
}
{ /* Transmit Interrupt Delay */
const struct ixgb_option opt = {
static const struct ixgb_option opt = {
.type = range_option,
.name = "Transmit Interrupt Delay",
.err = "using default of " __MODULE_STRING(DEFAULT_TIDV),
@ -451,7 +451,7 @@ ixgb_check_options(struct ixgb_adapter *adapter)
}
{ /* Transmit Interrupt Delay Enable */
const struct ixgb_option opt = {
static const struct ixgb_option opt = {
.type = enable_option,
.name = "Tx Interrupt Delay Enable",
.err = "defaulting to Enabled",