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Date: Fri, 28 May 2010 14:01:49 -0400
From: Prarit Bhargava <prarit@...hat.com>
To: netdev@...r.kernel.org, mschmidt@...hat.com
Cc: Prarit Bhargava <prarit@...hat.com>
Subject: [PATCH]: vxge: Fix checkstack warning in vxge_probe()
Linux 2.6.33 reports this checkstack warning:
drivers/net/vxge/vxge-main.c: In function 'vxge_probe':
drivers/net/vxge/vxge-main.c:4409: warning: the frame size of 1028 bytes is larger than 1024 bytes
This warning does not occur in the latest linux-2.6 or linux-next, however,
when I do a 'make -j32 CONFIG_FRAME_WARN=512' instead of 1024 I see
drivers/net/vxge/vxge-main.c: In function ‘vxge_probe’:
drivers/net/vxge/vxge-main.c:4423: warning: the frame size of 1024 bytes is larger than 512 bytes
This patch moves the large vxge_config struct off the stack.
Signed-off-by: Prarit Bhargava <prarit@...hat.com>
diff --git a/drivers/net/vxge/vxge-main.c b/drivers/net/vxge/vxge-main.c
index 2bab364..b955802 100644
--- a/drivers/net/vxge/vxge-main.c
+++ b/drivers/net/vxge/vxge-main.c
@@ -4016,7 +4016,7 @@ vxge_probe(struct pci_dev *pdev, const struct pci_device_id *pre)
int high_dma = 0;
u64 vpath_mask = 0;
struct vxgedev *vdev;
- struct vxge_config ll_config;
+ struct vxge_config *ll_config = NULL;
struct vxge_hw_device_config *device_config = NULL;
struct vxge_hw_device_attr attr;
int i, j, no_of_vpath = 0, max_vpath_supported = 0;
@@ -4075,17 +4075,24 @@ vxge_probe(struct pci_dev *pdev, const struct pci_device_id *pre)
goto _exit0;
}
- memset(&ll_config, 0, sizeof(struct vxge_config));
- ll_config.tx_steering_type = TX_MULTIQ_STEERING;
- ll_config.intr_type = MSI_X;
- ll_config.napi_weight = NEW_NAPI_WEIGHT;
- ll_config.rth_steering = RTH_STEERING;
+ ll_config = kzalloc(sizeof(*ll_config), GFP_KERNEL);
+ if (!ll_config) {
+ ret = -ENOMEM;
+ vxge_debug_init(VXGE_ERR,
+ "ll_config : malloc failed %s %d",
+ __FILE__, __LINE__);
+ goto _exit0;
+ }
+ ll_config->tx_steering_type = TX_MULTIQ_STEERING;
+ ll_config->intr_type = MSI_X;
+ ll_config->napi_weight = NEW_NAPI_WEIGHT;
+ ll_config->rth_steering = RTH_STEERING;
/* get the default configuration parameters */
vxge_hw_device_config_default_get(device_config);
/* initialize configuration parameters */
- vxge_device_config_init(device_config, &ll_config.intr_type);
+ vxge_device_config_init(device_config, &ll_config->intr_type);
ret = pci_enable_device(pdev);
if (ret) {
@@ -4138,7 +4145,7 @@ vxge_probe(struct pci_dev *pdev, const struct pci_device_id *pre)
(unsigned long long)pci_resource_start(pdev, 0));
status = vxge_hw_device_hw_info_get(attr.bar0,
- &ll_config.device_hw_info);
+ &ll_config->device_hw_info);
if (status != VXGE_HW_OK) {
vxge_debug_init(VXGE_ERR,
"%s: Reading of hardware info failed."
@@ -4147,7 +4154,7 @@ vxge_probe(struct pci_dev *pdev, const struct pci_device_id *pre)
goto _exit3;
}
- if (ll_config.device_hw_info.fw_version.major !=
+ if (ll_config->device_hw_info.fw_version.major !=
VXGE_DRIVER_FW_VERSION_MAJOR) {
vxge_debug_init(VXGE_ERR,
"%s: Incorrect firmware version."
@@ -4157,7 +4164,7 @@ vxge_probe(struct pci_dev *pdev, const struct pci_device_id *pre)
goto _exit3;
}
- vpath_mask = ll_config.device_hw_info.vpath_mask;
+ vpath_mask = ll_config->device_hw_info.vpath_mask;
if (vpath_mask == 0) {
vxge_debug_ll_config(VXGE_TRACE,
"%s: No vpaths available in device", VXGE_DRIVER_NAME);
@@ -4169,10 +4176,10 @@ vxge_probe(struct pci_dev *pdev, const struct pci_device_id *pre)
"%s:%d Vpath mask = %llx", __func__, __LINE__,
(unsigned long long)vpath_mask);
- function_mode = ll_config.device_hw_info.function_mode;
- host_type = ll_config.device_hw_info.host_type;
+ function_mode = ll_config->device_hw_info.function_mode;
+ host_type = ll_config->device_hw_info.host_type;
is_privileged = __vxge_hw_device_is_privilaged(host_type,
- ll_config.device_hw_info.func_id);
+ ll_config->device_hw_info.func_id);
/* Check how many vpaths are available */
for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
@@ -4186,7 +4193,7 @@ vxge_probe(struct pci_dev *pdev, const struct pci_device_id *pre)
/* Enable SRIOV mode, if firmware has SRIOV support and if it is a PF */
if (is_sriov(function_mode) && (max_config_dev > 1) &&
- (ll_config.intr_type != INTA) &&
+ (ll_config->intr_type != INTA) &&
(is_privileged == VXGE_HW_OK)) {
ret = pci_enable_sriov(pdev, ((max_config_dev - 1) < num_vfs)
? (max_config_dev - 1) : num_vfs);
@@ -4199,7 +4206,7 @@ vxge_probe(struct pci_dev *pdev, const struct pci_device_id *pre)
* Configure vpaths and get driver configured number of vpaths
* which is less than or equal to the maximum vpaths per function.
*/
- no_of_vpath = vxge_config_vpaths(device_config, vpath_mask, &ll_config);
+ no_of_vpath = vxge_config_vpaths(device_config, vpath_mask, ll_config);
if (!no_of_vpath) {
vxge_debug_ll_config(VXGE_ERR,
"%s: No more vpaths to configure", VXGE_DRIVER_NAME);
@@ -4234,21 +4241,21 @@ vxge_probe(struct pci_dev *pdev, const struct pci_device_id *pre)
/* set private device info */
pci_set_drvdata(pdev, hldev);
- ll_config.gro_enable = VXGE_GRO_ALWAYS_AGGREGATE;
- ll_config.fifo_indicate_max_pkts = VXGE_FIFO_INDICATE_MAX_PKTS;
- ll_config.addr_learn_en = addr_learn_en;
- ll_config.rth_algorithm = RTH_ALG_JENKINS;
- ll_config.rth_hash_type_tcpipv4 = VXGE_HW_RING_HASH_TYPE_TCP_IPV4;
- ll_config.rth_hash_type_ipv4 = VXGE_HW_RING_HASH_TYPE_NONE;
- ll_config.rth_hash_type_tcpipv6 = VXGE_HW_RING_HASH_TYPE_NONE;
- ll_config.rth_hash_type_ipv6 = VXGE_HW_RING_HASH_TYPE_NONE;
- ll_config.rth_hash_type_tcpipv6ex = VXGE_HW_RING_HASH_TYPE_NONE;
- ll_config.rth_hash_type_ipv6ex = VXGE_HW_RING_HASH_TYPE_NONE;
- ll_config.rth_bkt_sz = RTH_BUCKET_SIZE;
- ll_config.tx_pause_enable = VXGE_PAUSE_CTRL_ENABLE;
- ll_config.rx_pause_enable = VXGE_PAUSE_CTRL_ENABLE;
-
- if (vxge_device_register(hldev, &ll_config, high_dma, no_of_vpath,
+ ll_config->gro_enable = VXGE_GRO_ALWAYS_AGGREGATE;
+ ll_config->fifo_indicate_max_pkts = VXGE_FIFO_INDICATE_MAX_PKTS;
+ ll_config->addr_learn_en = addr_learn_en;
+ ll_config->rth_algorithm = RTH_ALG_JENKINS;
+ ll_config->rth_hash_type_tcpipv4 = VXGE_HW_RING_HASH_TYPE_TCP_IPV4;
+ ll_config->rth_hash_type_ipv4 = VXGE_HW_RING_HASH_TYPE_NONE;
+ ll_config->rth_hash_type_tcpipv6 = VXGE_HW_RING_HASH_TYPE_NONE;
+ ll_config->rth_hash_type_ipv6 = VXGE_HW_RING_HASH_TYPE_NONE;
+ ll_config->rth_hash_type_tcpipv6ex = VXGE_HW_RING_HASH_TYPE_NONE;
+ ll_config->rth_hash_type_ipv6ex = VXGE_HW_RING_HASH_TYPE_NONE;
+ ll_config->rth_bkt_sz = RTH_BUCKET_SIZE;
+ ll_config->tx_pause_enable = VXGE_PAUSE_CTRL_ENABLE;
+ ll_config->rx_pause_enable = VXGE_PAUSE_CTRL_ENABLE;
+
+ if (vxge_device_register(hldev, ll_config, high_dma, no_of_vpath,
&vdev)) {
ret = -EINVAL;
goto _exit4;
@@ -4279,7 +4286,7 @@ vxge_probe(struct pci_dev *pdev, const struct pci_device_id *pre)
vdev->vpaths[j].vdev = vdev;
vdev->vpaths[j].max_mac_addr_cnt = max_mac_vpath;
memcpy((u8 *)vdev->vpaths[j].macaddr,
- (u8 *)ll_config.device_hw_info.mac_addrs[i],
+ ll_config->device_hw_info.mac_addrs[i],
ETH_ALEN);
/* Initialize the mac address list header */
@@ -4300,18 +4307,18 @@ vxge_probe(struct pci_dev *pdev, const struct pci_device_id *pre)
macaddr = (u8 *)vdev->vpaths[0].macaddr;
- ll_config.device_hw_info.serial_number[VXGE_HW_INFO_LEN - 1] = '\0';
- ll_config.device_hw_info.product_desc[VXGE_HW_INFO_LEN - 1] = '\0';
- ll_config.device_hw_info.part_number[VXGE_HW_INFO_LEN - 1] = '\0';
+ ll_config->device_hw_info.serial_number[VXGE_HW_INFO_LEN - 1] = '\0';
+ ll_config->device_hw_info.product_desc[VXGE_HW_INFO_LEN - 1] = '\0';
+ ll_config->device_hw_info.part_number[VXGE_HW_INFO_LEN - 1] = '\0';
vxge_debug_init(VXGE_TRACE, "%s: SERIAL NUMBER: %s",
- vdev->ndev->name, ll_config.device_hw_info.serial_number);
+ vdev->ndev->name, ll_config->device_hw_info.serial_number);
vxge_debug_init(VXGE_TRACE, "%s: PART NUMBER: %s",
- vdev->ndev->name, ll_config.device_hw_info.part_number);
+ vdev->ndev->name, ll_config->device_hw_info.part_number);
vxge_debug_init(VXGE_TRACE, "%s: Neterion %s Server Adapter",
- vdev->ndev->name, ll_config.device_hw_info.product_desc);
+ vdev->ndev->name, ll_config->device_hw_info.product_desc);
vxge_debug_init(VXGE_TRACE, "%s: MAC ADDR: %pM",
vdev->ndev->name, macaddr);
@@ -4321,11 +4328,11 @@ vxge_probe(struct pci_dev *pdev, const struct pci_device_id *pre)
vxge_debug_init(VXGE_TRACE,
"%s: Firmware version : %s Date : %s", vdev->ndev->name,
- ll_config.device_hw_info.fw_version.version,
- ll_config.device_hw_info.fw_date.date);
+ ll_config->device_hw_info.fw_version.version,
+ ll_config->device_hw_info.fw_date.date);
if (new_device) {
- switch (ll_config.device_hw_info.function_mode) {
+ switch (ll_config->device_hw_info.function_mode) {
case VXGE_HW_FUNCTION_MODE_SINGLE_FUNCTION:
vxge_debug_init(VXGE_TRACE,
"%s: Single Function Mode Enabled", vdev->ndev->name);
@@ -4348,7 +4355,7 @@ vxge_probe(struct pci_dev *pdev, const struct pci_device_id *pre)
vxge_print_parm(vdev, vpath_mask);
/* Store the fw version for ethttool option */
- strcpy(vdev->fw_version, ll_config.device_hw_info.fw_version.version);
+ strcpy(vdev->fw_version, ll_config->device_hw_info.fw_version.version);
memcpy(vdev->ndev->dev_addr, (u8 *)vdev->vpaths[0].macaddr, ETH_ALEN);
memcpy(vdev->ndev->perm_addr, vdev->ndev->dev_addr, ETH_ALEN);
@@ -4387,7 +4394,7 @@ vxge_probe(struct pci_dev *pdev, const struct pci_device_id *pre)
* present to prevent such a failure.
*/
- if (ll_config.device_hw_info.function_mode ==
+ if (ll_config->device_hw_info.function_mode ==
VXGE_HW_FUNCTION_MODE_MULTI_FUNCTION)
if (vdev->config.intr_type == INTA)
vxge_hw_device_unmask_all(hldev);
@@ -4399,6 +4406,7 @@ vxge_probe(struct pci_dev *pdev, const struct pci_device_id *pre)
VXGE_COPY_DEBUG_INFO_TO_LL(vdev, vxge_hw_device_error_level_get(hldev),
vxge_hw_device_trace_level_get(hldev));
+ kfree(ll_config);
return 0;
_exit5:
@@ -4416,6 +4424,7 @@ _exit2:
_exit1:
pci_disable_device(pdev);
_exit0:
+ kfree(ll_config);
kfree(device_config);
driver_config->config_dev_cnt--;
pci_set_drvdata(pdev, NULL);
--
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