* RE: [PATCH 05/12] bnx2x: Read VPD with pci_vpd_alloc()
@ 2021-08-24 14:20 Prabhakar Kushwaha
2021-08-24 14:30 ` Heiner Kallweit
0 siblings, 1 reply; 5+ messages in thread
From: Prabhakar Kushwaha @ 2021-08-24 14:20 UTC (permalink / raw)
To: Heiner Kallweit, Bjorn Helgaas, Ariel Elior,
Sudarsana Reddy Kalluru, GR-everest-linux-l2, Jakub Kicinski,
David Härdeman
Cc: linux-pci, netdev, Shai Malin
Hi Heiner,
> -----Original Message-----
> From: Heiner Kallweit <hkallweit1@gmail.com>
> Sent: Sunday, August 22, 2021 7:23 PM
> To: Bjorn Helgaas <bhelgaas@google.com>; Ariel Elior <aelior@marvell.com>;
> Sudarsana Reddy Kalluru <skalluru@marvell.com>; GR-everest-linux-l2 <GR-
> everest-linux-l2@marvell.com>; Jakub Kicinski <kuba@kernel.org>; David
> Härdeman <david@hardeman.nu>
> Cc: linux-pci@vger.kernel.org; netdev@vger.kernel.org
> Subject: [PATCH 05/12] bnx2x: Read VPD with pci_vpd_alloc()
>
> External Email
>
> ----------------------------------------------------------------------
> Use pci_vpd_alloc() to dynamically allocate a properly sized buffer and
> read the full VPD data into it.
>
> This simplifies the code, and we no longer have to make assumptions about
> VPD size.
>
> Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
> ---
> drivers/net/ethernet/broadcom/bnx2x/bnx2x.h | 1 -
> .../net/ethernet/broadcom/bnx2x/bnx2x_main.c | 44 +++++--------------
> 2 files changed, 10 insertions(+), 35 deletions(-)
>
> diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x.h
> b/drivers/net/ethernet/broadcom/bnx2x/bnx2x.h
> index d04994840..e789430f4 100644
> --- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x.h
> +++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x.h
> @@ -2407,7 +2407,6 @@ void bnx2x_igu_clear_sb_gen(struct bnx2x *bp, u8
> func, u8 idu_sb_id,
> #define ETH_MAX_RX_CLIENTS_E2 ETH_MAX_RX_CLIENTS_E1H
> #endif
>
> -#define BNX2X_VPD_LEN 128
> #define VENDOR_ID_LEN 4
>
> #define VF_ACQUIRE_THRESH 3
> diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c
> b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c
> index 6d9813491..0466adf8d 100644
> --- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c
> +++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c
> @@ -12189,50 +12189,29 @@ static int bnx2x_get_hwinfo(struct bnx2x *bp)
>
> static void bnx2x_read_fwinfo(struct bnx2x *bp)
> {
> - int cnt, i, block_end, rodi;
> - char vpd_start[BNX2X_VPD_LEN+1];
> + int i, block_end, rodi;
> char str_id_reg[VENDOR_ID_LEN+1];
> char str_id_cap[VENDOR_ID_LEN+1];
> - char *vpd_data;
> - char *vpd_extended_data = NULL;
> - u8 len;
> + unsigned int vpd_len;
> + u8 *vpd_data, len;
>
> - cnt = pci_read_vpd(bp->pdev, 0, BNX2X_VPD_LEN, vpd_start);
> memset(bp->fw_ver, 0, sizeof(bp->fw_ver));
>
> - if (cnt < BNX2X_VPD_LEN)
> - goto out_not_found;
> + vpd_data = pci_vpd_alloc(bp->pdev, &vpd_len);
Definition of pci_vpd_alloc() is below as per repo "git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci.git" and branch wip/heiner-vpd-api
void *pci_vpd_alloc(struct pci_dev *dev, unsigned int *size)
{
unsigned int len = dev->vpd.len;
void *buf;
--
--
if (size)
*size = len;
}
Here is len is already part of pci_dev.
So why cannot same be set in caller function i.e. vpd_len = pb->pdev->vpd.len
> + if (IS_ERR(vpd_data))
> + return;
>
> /* VPD RO tag should be first tag after identifier string, hence
> * we should be able to find it in first BNX2X_VPD_LEN chars
> */
> - i = pci_vpd_find_tag(vpd_start, BNX2X_VPD_LEN,
> PCI_VPD_LRDT_RO_DATA);
> + i = pci_vpd_find_tag(vpd_data, vpd_len, PCI_VPD_LRDT_RO_DATA);
> if (i < 0)
> goto out_not_found;
>
> block_end = i + PCI_VPD_LRDT_TAG_SIZE +
> - pci_vpd_lrdt_size(&vpd_start[i]);
> -
> + pci_vpd_lrdt_size(&vpd_data[i]);
> i += PCI_VPD_LRDT_TAG_SIZE;
>
> - if (block_end > BNX2X_VPD_LEN) {
> - vpd_extended_data = kmalloc(block_end, GFP_KERNEL);
> - if (vpd_extended_data == NULL)
> - goto out_not_found;
> -
> - /* read rest of vpd image into vpd_extended_data */
> - memcpy(vpd_extended_data, vpd_start, BNX2X_VPD_LEN);
> - cnt = pci_read_vpd(bp->pdev, BNX2X_VPD_LEN,
> - block_end - BNX2X_VPD_LEN,
> - vpd_extended_data + BNX2X_VPD_LEN);
> - if (cnt < (block_end - BNX2X_VPD_LEN))
> - goto out_not_found;
> - vpd_data = vpd_extended_data;
> - } else
> - vpd_data = vpd_start;
> -
> - /* now vpd_data holds full vpd content in both cases */
> -
> rodi = pci_vpd_find_info_keyword(vpd_data, i, block_end,
> PCI_VPD_RO_KEYWORD_MFR_ID);
> if (rodi < 0)
> @@ -12258,17 +12237,14 @@ static void bnx2x_read_fwinfo(struct bnx2x *bp)
>
> rodi += PCI_VPD_INFO_FLD_HDR_SIZE;
>
> - if (len < 32 && (len + rodi) <= BNX2X_VPD_LEN) {
> + if (len < 32 && (len + rodi) <= vpd_len) {
> memcpy(bp->fw_ver, &vpd_data[rodi], len);
> bp->fw_ver[len] = ' ';
> }
> }
> - kfree(vpd_extended_data);
> - return;
> }
> out_not_found:
> - kfree(vpd_extended_data);
> - return;
> + kfree(vpd_data);
As vpd_data allocation done in PCI layer.
It will be logical to also free vpd_data in PCI layer.
--pk
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [PATCH 05/12] bnx2x: Read VPD with pci_vpd_alloc()
2021-08-24 14:20 [PATCH 05/12] bnx2x: Read VPD with pci_vpd_alloc() Prabhakar Kushwaha
@ 2021-08-24 14:30 ` Heiner Kallweit
0 siblings, 0 replies; 5+ messages in thread
From: Heiner Kallweit @ 2021-08-24 14:30 UTC (permalink / raw)
To: Prabhakar Kushwaha, Bjorn Helgaas, Ariel Elior,
Sudarsana Reddy Kalluru, GR-everest-linux-l2, Jakub Kicinski,
David Härdeman
Cc: linux-pci, netdev, Shai Malin
On 24.08.2021 16:20, Prabhakar Kushwaha wrote:
> Hi Heiner,
>
>> -----Original Message-----
>> From: Heiner Kallweit <hkallweit1@gmail.com>
>> Sent: Sunday, August 22, 2021 7:23 PM
>> To: Bjorn Helgaas <bhelgaas@google.com>; Ariel Elior <aelior@marvell.com>;
>> Sudarsana Reddy Kalluru <skalluru@marvell.com>; GR-everest-linux-l2 <GR-
>> everest-linux-l2@marvell.com>; Jakub Kicinski <kuba@kernel.org>; David
>> Härdeman <david@hardeman.nu>
>> Cc: linux-pci@vger.kernel.org; netdev@vger.kernel.org
>> Subject: [PATCH 05/12] bnx2x: Read VPD with pci_vpd_alloc()
>>
>> External Email
>>
>> ----------------------------------------------------------------------
>> Use pci_vpd_alloc() to dynamically allocate a properly sized buffer and
>> read the full VPD data into it.
>>
>> This simplifies the code, and we no longer have to make assumptions about
>> VPD size.
>>
>> Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
>> ---
>> drivers/net/ethernet/broadcom/bnx2x/bnx2x.h | 1 -
>> .../net/ethernet/broadcom/bnx2x/bnx2x_main.c | 44 +++++--------------
>> 2 files changed, 10 insertions(+), 35 deletions(-)
>>
>> diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x.h
>> b/drivers/net/ethernet/broadcom/bnx2x/bnx2x.h
>> index d04994840..e789430f4 100644
>> --- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x.h
>> +++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x.h
>> @@ -2407,7 +2407,6 @@ void bnx2x_igu_clear_sb_gen(struct bnx2x *bp, u8
>> func, u8 idu_sb_id,
>> #define ETH_MAX_RX_CLIENTS_E2 ETH_MAX_RX_CLIENTS_E1H
>> #endif
>>
>> -#define BNX2X_VPD_LEN 128
>> #define VENDOR_ID_LEN 4
>>
>> #define VF_ACQUIRE_THRESH 3
>> diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c
>> b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c
>> index 6d9813491..0466adf8d 100644
>> --- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c
>> +++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c
>> @@ -12189,50 +12189,29 @@ static int bnx2x_get_hwinfo(struct bnx2x *bp)
>>
>> static void bnx2x_read_fwinfo(struct bnx2x *bp)
>> {
>> - int cnt, i, block_end, rodi;
>> - char vpd_start[BNX2X_VPD_LEN+1];
>> + int i, block_end, rodi;
>> char str_id_reg[VENDOR_ID_LEN+1];
>> char str_id_cap[VENDOR_ID_LEN+1];
>> - char *vpd_data;
>> - char *vpd_extended_data = NULL;
>> - u8 len;
>> + unsigned int vpd_len;
>> + u8 *vpd_data, len;
>>
>> - cnt = pci_read_vpd(bp->pdev, 0, BNX2X_VPD_LEN, vpd_start);
>> memset(bp->fw_ver, 0, sizeof(bp->fw_ver));
>>
>> - if (cnt < BNX2X_VPD_LEN)
>> - goto out_not_found;
>> + vpd_data = pci_vpd_alloc(bp->pdev, &vpd_len);
>
> Definition of pci_vpd_alloc() is below as per repo "git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci.git" and branch wip/heiner-vpd-api
> void *pci_vpd_alloc(struct pci_dev *dev, unsigned int *size)
> {
> unsigned int len = dev->vpd.len;
> void *buf;
> --
> --
> if (size)
> *size = len;
> }
> Here is len is already part of pci_dev.
>
> So why cannot same be set in caller function i.e. vpd_len = pb->pdev->vpd.len
>
Internals of struct pci_vpd shouldn't be referenced outside PCI core.
Also you can't use vpd.len w/o checking vpd.cap.
pci_vpd_alloc() encapsulates these internals.
>
>> + if (IS_ERR(vpd_data))
>> + return;
>>
>> /* VPD RO tag should be first tag after identifier string, hence
>> * we should be able to find it in first BNX2X_VPD_LEN chars
>> */
>> - i = pci_vpd_find_tag(vpd_start, BNX2X_VPD_LEN,
>> PCI_VPD_LRDT_RO_DATA);
>> + i = pci_vpd_find_tag(vpd_data, vpd_len, PCI_VPD_LRDT_RO_DATA);
>> if (i < 0)
>> goto out_not_found;
>>
>> block_end = i + PCI_VPD_LRDT_TAG_SIZE +
>> - pci_vpd_lrdt_size(&vpd_start[i]);
>> -
>> + pci_vpd_lrdt_size(&vpd_data[i]);
>> i += PCI_VPD_LRDT_TAG_SIZE;
>>
>> - if (block_end > BNX2X_VPD_LEN) {
>> - vpd_extended_data = kmalloc(block_end, GFP_KERNEL);
>> - if (vpd_extended_data == NULL)
>> - goto out_not_found;
>> -
>> - /* read rest of vpd image into vpd_extended_data */
>> - memcpy(vpd_extended_data, vpd_start, BNX2X_VPD_LEN);
>> - cnt = pci_read_vpd(bp->pdev, BNX2X_VPD_LEN,
>> - block_end - BNX2X_VPD_LEN,
>> - vpd_extended_data + BNX2X_VPD_LEN);
>> - if (cnt < (block_end - BNX2X_VPD_LEN))
>> - goto out_not_found;
>> - vpd_data = vpd_extended_data;
>> - } else
>> - vpd_data = vpd_start;
>> -
>> - /* now vpd_data holds full vpd content in both cases */
>> -
>> rodi = pci_vpd_find_info_keyword(vpd_data, i, block_end,
>> PCI_VPD_RO_KEYWORD_MFR_ID);
>> if (rodi < 0)
>> @@ -12258,17 +12237,14 @@ static void bnx2x_read_fwinfo(struct bnx2x *bp)
>>
>> rodi += PCI_VPD_INFO_FLD_HDR_SIZE;
>>
>> - if (len < 32 && (len + rodi) <= BNX2X_VPD_LEN) {
>> + if (len < 32 && (len + rodi) <= vpd_len) {
>> memcpy(bp->fw_ver, &vpd_data[rodi], len);
>> bp->fw_ver[len] = ' ';
>> }
>> }
>> - kfree(vpd_extended_data);
>> - return;
>> }
>> out_not_found:
>> - kfree(vpd_extended_data);
>> - return;
>> + kfree(vpd_data);
>
> As vpd_data allocation done in PCI layer.
> It will be logical to also free vpd_data in PCI layer.
>
The idea is right, however a call like pci_vpd_free() would be a one-liner
calling kfree(), and I doubt it's really worth it.
> --pk
>
Heiner
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [PATCH 05/12] bnx2x: Read VPD with pci_vpd_alloc()
2021-08-22 13:53 ` [PATCH 05/12] bnx2x: Read VPD with pci_vpd_alloc() Heiner Kallweit
@ 2021-08-22 17:42 ` kernel test robot
0 siblings, 0 replies; 5+ messages in thread
From: kernel test robot @ 2021-08-22 17:42 UTC (permalink / raw)
To: Heiner Kallweit, Bjorn Helgaas, Ariel Elior, Sudarsana Kalluru,
GR-everest-linux-l2, Jakub Kicinski, David Härdeman
Cc: kbuild-all, linux-pci, netdev
[-- Attachment #1: Type: text/plain, Size: 4459 bytes --]
Hi Heiner,
I love your patch! Perhaps something to improve:
[auto build test WARNING on scsi/for-next]
[also build test WARNING on pci/next mkp-scsi/for-next linus/master v5.14-rc6 next-20210820]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch]
url: https://github.com/0day-ci/linux/commits/Heiner-Kallweit/PCI-VPD-Convert-more-users-to-the-new-VPD-API-functions/20210822-220229
base: https://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi.git for-next
config: xtensa-allyesconfig (attached as .config)
compiler: xtensa-linux-gcc (GCC) 11.2.0
reproduce (this is a W=1 build):
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# https://github.com/0day-ci/linux/commit/11d3b0532e225fec84b84c082ff913ab35cecd29
git remote add linux-review https://github.com/0day-ci/linux
git fetch --no-tags linux-review Heiner-Kallweit/PCI-VPD-Convert-more-users-to-the-new-VPD-API-functions/20210822-220229
git checkout 11d3b0532e225fec84b84c082ff913ab35cecd29
# save the attached .config to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross ARCH=xtensa
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>
All warnings (new ones prefixed by >>):
drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c: In function 'bnx2x_read_fwinfo':
drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c:12200:20: error: implicit declaration of function 'pci_vpd_alloc'; did you mean 'pci_pool_alloc'? [-Werror=implicit-function-declaration]
12200 | vpd_data = pci_vpd_alloc(bp->pdev, &vpd_len);
| ^~~~~~~~~~~~~
| pci_pool_alloc
>> drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c:12200:18: warning: assignment to 'u8 *' {aka 'unsigned char *'} from 'int' makes pointer from integer without a cast [-Wint-conversion]
12200 | vpd_data = pci_vpd_alloc(bp->pdev, &vpd_len);
| ^
cc1: some warnings being treated as errors
vim +12200 drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c
12189
12190 static void bnx2x_read_fwinfo(struct bnx2x *bp)
12191 {
12192 int i, block_end, rodi;
12193 char str_id_reg[VENDOR_ID_LEN+1];
12194 char str_id_cap[VENDOR_ID_LEN+1];
12195 unsigned int vpd_len;
12196 u8 *vpd_data, len;
12197
12198 memset(bp->fw_ver, 0, sizeof(bp->fw_ver));
12199
12200 vpd_data = pci_vpd_alloc(bp->pdev, &vpd_len);
12201 if (IS_ERR(vpd_data))
12202 return;
12203
12204 /* VPD RO tag should be first tag after identifier string, hence
12205 * we should be able to find it in first BNX2X_VPD_LEN chars
12206 */
12207 i = pci_vpd_find_tag(vpd_data, vpd_len, PCI_VPD_LRDT_RO_DATA);
12208 if (i < 0)
12209 goto out_not_found;
12210
12211 block_end = i + PCI_VPD_LRDT_TAG_SIZE +
12212 pci_vpd_lrdt_size(&vpd_data[i]);
12213 i += PCI_VPD_LRDT_TAG_SIZE;
12214
12215 rodi = pci_vpd_find_info_keyword(vpd_data, i, block_end,
12216 PCI_VPD_RO_KEYWORD_MFR_ID);
12217 if (rodi < 0)
12218 goto out_not_found;
12219
12220 len = pci_vpd_info_field_size(&vpd_data[rodi]);
12221
12222 if (len != VENDOR_ID_LEN)
12223 goto out_not_found;
12224
12225 rodi += PCI_VPD_INFO_FLD_HDR_SIZE;
12226
12227 /* vendor specific info */
12228 snprintf(str_id_reg, VENDOR_ID_LEN + 1, "%04x", PCI_VENDOR_ID_DELL);
12229 snprintf(str_id_cap, VENDOR_ID_LEN + 1, "%04X", PCI_VENDOR_ID_DELL);
12230 if (!strncmp(str_id_reg, &vpd_data[rodi], VENDOR_ID_LEN) ||
12231 !strncmp(str_id_cap, &vpd_data[rodi], VENDOR_ID_LEN)) {
12232
12233 rodi = pci_vpd_find_info_keyword(vpd_data, i, block_end,
12234 PCI_VPD_RO_KEYWORD_VENDOR0);
12235 if (rodi >= 0) {
12236 len = pci_vpd_info_field_size(&vpd_data[rodi]);
12237
12238 rodi += PCI_VPD_INFO_FLD_HDR_SIZE;
12239
12240 if (len < 32 && (len + rodi) <= vpd_len) {
12241 memcpy(bp->fw_ver, &vpd_data[rodi], len);
12242 bp->fw_ver[len] = ' ';
12243 }
12244 }
12245 }
12246 out_not_found:
12247 kfree(vpd_data);
12248 }
12249
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
[-- Attachment #2: .config.gz --]
[-- Type: application/gzip, Size: 68217 bytes --]
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [PATCH 05/12] bnx2x: Read VPD with pci_vpd_alloc()
@ 2021-08-22 17:42 ` kernel test robot
0 siblings, 0 replies; 5+ messages in thread
From: kernel test robot @ 2021-08-22 17:42 UTC (permalink / raw)
To: kbuild-all
[-- Attachment #1: Type: text/plain, Size: 4568 bytes --]
Hi Heiner,
I love your patch! Perhaps something to improve:
[auto build test WARNING on scsi/for-next]
[also build test WARNING on pci/next mkp-scsi/for-next linus/master v5.14-rc6 next-20210820]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch]
url: https://github.com/0day-ci/linux/commits/Heiner-Kallweit/PCI-VPD-Convert-more-users-to-the-new-VPD-API-functions/20210822-220229
base: https://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi.git for-next
config: xtensa-allyesconfig (attached as .config)
compiler: xtensa-linux-gcc (GCC) 11.2.0
reproduce (this is a W=1 build):
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# https://github.com/0day-ci/linux/commit/11d3b0532e225fec84b84c082ff913ab35cecd29
git remote add linux-review https://github.com/0day-ci/linux
git fetch --no-tags linux-review Heiner-Kallweit/PCI-VPD-Convert-more-users-to-the-new-VPD-API-functions/20210822-220229
git checkout 11d3b0532e225fec84b84c082ff913ab35cecd29
# save the attached .config to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross ARCH=xtensa
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>
All warnings (new ones prefixed by >>):
drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c: In function 'bnx2x_read_fwinfo':
drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c:12200:20: error: implicit declaration of function 'pci_vpd_alloc'; did you mean 'pci_pool_alloc'? [-Werror=implicit-function-declaration]
12200 | vpd_data = pci_vpd_alloc(bp->pdev, &vpd_len);
| ^~~~~~~~~~~~~
| pci_pool_alloc
>> drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c:12200:18: warning: assignment to 'u8 *' {aka 'unsigned char *'} from 'int' makes pointer from integer without a cast [-Wint-conversion]
12200 | vpd_data = pci_vpd_alloc(bp->pdev, &vpd_len);
| ^
cc1: some warnings being treated as errors
vim +12200 drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c
12189
12190 static void bnx2x_read_fwinfo(struct bnx2x *bp)
12191 {
12192 int i, block_end, rodi;
12193 char str_id_reg[VENDOR_ID_LEN+1];
12194 char str_id_cap[VENDOR_ID_LEN+1];
12195 unsigned int vpd_len;
12196 u8 *vpd_data, len;
12197
12198 memset(bp->fw_ver, 0, sizeof(bp->fw_ver));
12199
12200 vpd_data = pci_vpd_alloc(bp->pdev, &vpd_len);
12201 if (IS_ERR(vpd_data))
12202 return;
12203
12204 /* VPD RO tag should be first tag after identifier string, hence
12205 * we should be able to find it in first BNX2X_VPD_LEN chars
12206 */
12207 i = pci_vpd_find_tag(vpd_data, vpd_len, PCI_VPD_LRDT_RO_DATA);
12208 if (i < 0)
12209 goto out_not_found;
12210
12211 block_end = i + PCI_VPD_LRDT_TAG_SIZE +
12212 pci_vpd_lrdt_size(&vpd_data[i]);
12213 i += PCI_VPD_LRDT_TAG_SIZE;
12214
12215 rodi = pci_vpd_find_info_keyword(vpd_data, i, block_end,
12216 PCI_VPD_RO_KEYWORD_MFR_ID);
12217 if (rodi < 0)
12218 goto out_not_found;
12219
12220 len = pci_vpd_info_field_size(&vpd_data[rodi]);
12221
12222 if (len != VENDOR_ID_LEN)
12223 goto out_not_found;
12224
12225 rodi += PCI_VPD_INFO_FLD_HDR_SIZE;
12226
12227 /* vendor specific info */
12228 snprintf(str_id_reg, VENDOR_ID_LEN + 1, "%04x", PCI_VENDOR_ID_DELL);
12229 snprintf(str_id_cap, VENDOR_ID_LEN + 1, "%04X", PCI_VENDOR_ID_DELL);
12230 if (!strncmp(str_id_reg, &vpd_data[rodi], VENDOR_ID_LEN) ||
12231 !strncmp(str_id_cap, &vpd_data[rodi], VENDOR_ID_LEN)) {
12232
12233 rodi = pci_vpd_find_info_keyword(vpd_data, i, block_end,
12234 PCI_VPD_RO_KEYWORD_VENDOR0);
12235 if (rodi >= 0) {
12236 len = pci_vpd_info_field_size(&vpd_data[rodi]);
12237
12238 rodi += PCI_VPD_INFO_FLD_HDR_SIZE;
12239
12240 if (len < 32 && (len + rodi) <= vpd_len) {
12241 memcpy(bp->fw_ver, &vpd_data[rodi], len);
12242 bp->fw_ver[len] = ' ';
12243 }
12244 }
12245 }
12246 out_not_found:
12247 kfree(vpd_data);
12248 }
12249
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all(a)lists.01.org
[-- Attachment #2: config.gz --]
[-- Type: application/gzip, Size: 68217 bytes --]
^ permalink raw reply [flat|nested] 5+ messages in thread
* [PATCH 05/12] bnx2x: Read VPD with pci_vpd_alloc()
2021-08-22 13:46 [PATCH 00/12] PCI/VPD: Convert more users to the new VPD API functions Heiner Kallweit
@ 2021-08-22 13:53 ` Heiner Kallweit
2021-08-22 17:42 ` kernel test robot
0 siblings, 1 reply; 5+ messages in thread
From: Heiner Kallweit @ 2021-08-22 13:53 UTC (permalink / raw)
To: Bjorn Helgaas, Ariel Elior, Sudarsana Kalluru,
GR-everest-linux-l2, Jakub Kicinski, David Härdeman
Cc: linux-pci, netdev
Use pci_vpd_alloc() to dynamically allocate a properly sized buffer and
read the full VPD data into it.
This simplifies the code, and we no longer have to make assumptions about
VPD size.
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
---
drivers/net/ethernet/broadcom/bnx2x/bnx2x.h | 1 -
.../net/ethernet/broadcom/bnx2x/bnx2x_main.c | 44 +++++--------------
2 files changed, 10 insertions(+), 35 deletions(-)
diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x.h b/drivers/net/ethernet/broadcom/bnx2x/bnx2x.h
index d04994840..e789430f4 100644
--- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x.h
+++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x.h
@@ -2407,7 +2407,6 @@ void bnx2x_igu_clear_sb_gen(struct bnx2x *bp, u8 func, u8 idu_sb_id,
#define ETH_MAX_RX_CLIENTS_E2 ETH_MAX_RX_CLIENTS_E1H
#endif
-#define BNX2X_VPD_LEN 128
#define VENDOR_ID_LEN 4
#define VF_ACQUIRE_THRESH 3
diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c
index 6d9813491..0466adf8d 100644
--- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c
+++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c
@@ -12189,50 +12189,29 @@ static int bnx2x_get_hwinfo(struct bnx2x *bp)
static void bnx2x_read_fwinfo(struct bnx2x *bp)
{
- int cnt, i, block_end, rodi;
- char vpd_start[BNX2X_VPD_LEN+1];
+ int i, block_end, rodi;
char str_id_reg[VENDOR_ID_LEN+1];
char str_id_cap[VENDOR_ID_LEN+1];
- char *vpd_data;
- char *vpd_extended_data = NULL;
- u8 len;
+ unsigned int vpd_len;
+ u8 *vpd_data, len;
- cnt = pci_read_vpd(bp->pdev, 0, BNX2X_VPD_LEN, vpd_start);
memset(bp->fw_ver, 0, sizeof(bp->fw_ver));
- if (cnt < BNX2X_VPD_LEN)
- goto out_not_found;
+ vpd_data = pci_vpd_alloc(bp->pdev, &vpd_len);
+ if (IS_ERR(vpd_data))
+ return;
/* VPD RO tag should be first tag after identifier string, hence
* we should be able to find it in first BNX2X_VPD_LEN chars
*/
- i = pci_vpd_find_tag(vpd_start, BNX2X_VPD_LEN, PCI_VPD_LRDT_RO_DATA);
+ i = pci_vpd_find_tag(vpd_data, vpd_len, PCI_VPD_LRDT_RO_DATA);
if (i < 0)
goto out_not_found;
block_end = i + PCI_VPD_LRDT_TAG_SIZE +
- pci_vpd_lrdt_size(&vpd_start[i]);
-
+ pci_vpd_lrdt_size(&vpd_data[i]);
i += PCI_VPD_LRDT_TAG_SIZE;
- if (block_end > BNX2X_VPD_LEN) {
- vpd_extended_data = kmalloc(block_end, GFP_KERNEL);
- if (vpd_extended_data == NULL)
- goto out_not_found;
-
- /* read rest of vpd image into vpd_extended_data */
- memcpy(vpd_extended_data, vpd_start, BNX2X_VPD_LEN);
- cnt = pci_read_vpd(bp->pdev, BNX2X_VPD_LEN,
- block_end - BNX2X_VPD_LEN,
- vpd_extended_data + BNX2X_VPD_LEN);
- if (cnt < (block_end - BNX2X_VPD_LEN))
- goto out_not_found;
- vpd_data = vpd_extended_data;
- } else
- vpd_data = vpd_start;
-
- /* now vpd_data holds full vpd content in both cases */
-
rodi = pci_vpd_find_info_keyword(vpd_data, i, block_end,
PCI_VPD_RO_KEYWORD_MFR_ID);
if (rodi < 0)
@@ -12258,17 +12237,14 @@ static void bnx2x_read_fwinfo(struct bnx2x *bp)
rodi += PCI_VPD_INFO_FLD_HDR_SIZE;
- if (len < 32 && (len + rodi) <= BNX2X_VPD_LEN) {
+ if (len < 32 && (len + rodi) <= vpd_len) {
memcpy(bp->fw_ver, &vpd_data[rodi], len);
bp->fw_ver[len] = ' ';
}
}
- kfree(vpd_extended_data);
- return;
}
out_not_found:
- kfree(vpd_extended_data);
- return;
+ kfree(vpd_data);
}
static void bnx2x_set_modes_bitmap(struct bnx2x *bp)
--
2.33.0
^ permalink raw reply related [flat|nested] 5+ messages in thread
end of thread, other threads:[~2021-08-24 14:30 UTC | newest]
Thread overview: 5+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2021-08-24 14:20 [PATCH 05/12] bnx2x: Read VPD with pci_vpd_alloc() Prabhakar Kushwaha
2021-08-24 14:30 ` Heiner Kallweit
-- strict thread matches above, loose matches on Subject: below --
2021-08-22 13:46 [PATCH 00/12] PCI/VPD: Convert more users to the new VPD API functions Heiner Kallweit
2021-08-22 13:53 ` [PATCH 05/12] bnx2x: Read VPD with pci_vpd_alloc() Heiner Kallweit
2021-08-22 17:42 ` kernel test robot
2021-08-22 17:42 ` kernel test robot
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.