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authorJesse Brandeburg <jesse.brandeburg@intel.com>2011-09-23 02:11:29 +0000
committerDavid S. Miller <davem@davemloft.net>2011-09-23 13:55:25 -0400
commitac5ac789ebcf5b27e9edc231f6d33c92d722c607 (patch)
treed4d43ce8f4f194f48ddc253d6f8941e0053e51e8 /drivers/net/ethernet/intel/ixgb
parent120deefa0bef266d4e01e986f272de2f0f5d3ef3 (diff)
downloadlinux-linaro-stable-ac5ac789ebcf5b27e9edc231f6d33c92d722c607.tar.gz
ixgb: eliminate checkstack warnings
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>
Diffstat (limited to 'drivers/net/ethernet/intel/ixgb')
-rw-r--r--drivers/net/ethernet/intel/ixgb/ixgb_ee.c2
-rw-r--r--drivers/net/ethernet/intel/ixgb/ixgb_ee.h4
-rw-r--r--drivers/net/ethernet/intel/ixgb/ixgb_hw.c2
-rw-r--r--drivers/net/ethernet/intel/ixgb/ixgb_hw.h4
-rw-r--r--drivers/net/ethernet/intel/ixgb/ixgb_main.c21
-rw-r--r--drivers/net/ethernet/intel/ixgb/ixgb_osdep.h1
-rw-r--r--drivers/net/ethernet/intel/ixgb/ixgb_param.c18
7 files changed, 28 insertions, 24 deletions
diff --git a/drivers/net/ethernet/intel/ixgb/ixgb_ee.c b/drivers/net/ethernet/intel/ixgb/ixgb_ee.c
index 38b362b67857..2ed925f38811 100644
--- a/drivers/net/ethernet/intel/ixgb/ixgb_ee.c
+++ b/drivers/net/ethernet/intel/ixgb/ixgb_ee.c
@@ -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);
diff --git a/drivers/net/ethernet/intel/ixgb/ixgb_ee.h b/drivers/net/ethernet/intel/ixgb/ixgb_ee.h
index 7ea12652f471..5680f64314b8 100644
--- a/drivers/net/ethernet/intel/ixgb/ixgb_ee.h
+++ b/drivers/net/ethernet/intel/ixgb/ixgb_ee.h
@@ -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;
diff --git a/drivers/net/ethernet/intel/ixgb/ixgb_hw.c b/drivers/net/ethernet/intel/ixgb/ixgb_hw.c
index 3d61a9e4faf7..99b69adb4a0f 100644
--- a/drivers/net/ethernet/intel/ixgb/ixgb_hw.c
+++ b/drivers/net/ethernet/intel/ixgb/ixgb_hw.c
@@ -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");
diff --git a/drivers/net/ethernet/intel/ixgb/ixgb_hw.h b/drivers/net/ethernet/intel/ixgb/ixgb_hw.h
index 873d32b89fba..2a99a35c33aa 100644
--- a/drivers/net/ethernet/intel/ixgb/ixgb_hw.h
+++ b/drivers/net/ethernet/intel/ixgb/ixgb_hw.h
@@ -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 */
diff --git a/drivers/net/ethernet/intel/ixgb/ixgb_main.c b/drivers/net/ethernet/intel/ixgb/ixgb_main.c
index b8fb16304598..ca3ab4a29ac4 100644
--- a/drivers/net/ethernet/intel/ixgb/ixgb_main.c
+++ b/drivers/net/ethernet/intel/ixgb/ixgb_main.c
@@ -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
diff --git a/drivers/net/ethernet/intel/ixgb/ixgb_osdep.h b/drivers/net/ethernet/intel/ixgb/ixgb_osdep.h
index e361185920ef..8fc905192231 100644
--- a/drivers/net/ethernet/intel/ixgb/ixgb_osdep.h
+++ b/drivers/net/ethernet/intel/ixgb/ixgb_osdep.h
@@ -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))
diff --git a/drivers/net/ethernet/intel/ixgb/ixgb_param.c b/drivers/net/ethernet/intel/ixgb/ixgb_param.c
index dd7fbeb1f7d1..07d83ab46e21 100644
--- a/drivers/net/ethernet/intel/ixgb/ixgb_param.c
+++ b/drivers/net/ethernet/intel/ixgb/ixgb_param.c
@@ -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",