* Re: [edk2-devel] [PATCH v2] NetworkPkg/DxeNetLib: Change the order of conditions in IF statement
[not found] <16109DC42FE5E79D.3891@groups.io>
@ 2020-05-20 3:10 ` Zhang, Shenglei
0 siblings, 0 replies; 3+ messages in thread
From: Zhang, Shenglei @ 2020-05-20 3:10 UTC (permalink / raw)
To: devel@edk2.groups.io, Zhang, Shenglei, Gao, Liming
Cc: Maciej Rabeda, Fu, Siyuan, Wu, Jiaxin
Hi,
For this patch, I'd like to catch this stable tag.
Thanks,
Shenglei
> -----Original Message-----
> From: devel@edk2.groups.io [mailto:devel@edk2.groups.io] On Behalf Of
> Zhang, Shenglei
> Sent: Wednesday, May 20, 2020 11:09 AM
> To: devel@edk2.groups.io
> Cc: Maciej Rabeda <maciej.rabeda@linux.intel.com>; Fu, Siyuan
> <siyuan.fu@intel.com>; Wu, Jiaxin <jiaxin.wu@intel.com>
> Subject: [edk2-devel] [PATCH v2] NetworkPkg/DxeNetLib: Change the order
> of conditions in IF statement
>
> The condition, NET_HEADSPACE(&(Nbuf->BlockOp[Index])) < Len, is
> meaningless if Index = 0. So checking 'Index != 0' should be
> performed first in the if statement.
>
> Cc: Maciej Rabeda <maciej.rabeda@linux.intel.com>
> Cc: Siyuan Fu <siyuan.fu@intel.com>
> Cc: Jiaxin Wu <jiaxin.wu@intel.com>
> Signed-off-by: Shenglei Zhang <shenglei.zhang@intel.com>
> ---
>
> v2: Update 'Index > 0' to 'Index != 0'
>
> NetworkPkg/Library/DxeNetLib/NetBuffer.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/NetworkPkg/Library/DxeNetLib/NetBuffer.c
> b/NetworkPkg/Library/DxeNetLib/NetBuffer.c
> index a232802c9a21..329a17623d94 100644
> --- a/NetworkPkg/Library/DxeNetLib/NetBuffer.c
> +++ b/NetworkPkg/Library/DxeNetLib/NetBuffer.c
> @@ -1063,7 +1063,7 @@ NetbufAllocSpace (
> } else {
> NetbufGetByte (Nbuf, 0, &Index);
>
> - if ((NET_HEADSPACE(&(Nbuf->BlockOp[Index])) < Len) && (Index > 0)) {
> + if ((Index != 0) && (NET_HEADSPACE(&(Nbuf->BlockOp[Index])) < Len))
> {
> Index--;
> }
> }
> --
> 2.18.0.windows.1
>
>
>
^ permalink raw reply [flat|nested] 3+ messages in thread
* [PATCH v2] NetworkPkg/DxeNetLib: Change the order of conditions in IF statement
@ 2020-05-20 3:08 Zhang, Shenglei
2020-05-20 11:41 ` [edk2-devel] " Philippe Mathieu-Daudé
0 siblings, 1 reply; 3+ messages in thread
From: Zhang, Shenglei @ 2020-05-20 3:08 UTC (permalink / raw)
To: devel; +Cc: Maciej Rabeda, Siyuan Fu, Jiaxin Wu
The condition, NET_HEADSPACE(&(Nbuf->BlockOp[Index])) < Len, is
meaningless if Index = 0. So checking 'Index != 0' should be
performed first in the if statement.
Cc: Maciej Rabeda <maciej.rabeda@linux.intel.com>
Cc: Siyuan Fu <siyuan.fu@intel.com>
Cc: Jiaxin Wu <jiaxin.wu@intel.com>
Signed-off-by: Shenglei Zhang <shenglei.zhang@intel.com>
---
v2: Update 'Index > 0' to 'Index != 0'
NetworkPkg/Library/DxeNetLib/NetBuffer.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/NetworkPkg/Library/DxeNetLib/NetBuffer.c b/NetworkPkg/Library/DxeNetLib/NetBuffer.c
index a232802c9a21..329a17623d94 100644
--- a/NetworkPkg/Library/DxeNetLib/NetBuffer.c
+++ b/NetworkPkg/Library/DxeNetLib/NetBuffer.c
@@ -1063,7 +1063,7 @@ NetbufAllocSpace (
} else {
NetbufGetByte (Nbuf, 0, &Index);
- if ((NET_HEADSPACE(&(Nbuf->BlockOp[Index])) < Len) && (Index > 0)) {
+ if ((Index != 0) && (NET_HEADSPACE(&(Nbuf->BlockOp[Index])) < Len)) {
Index--;
}
}
--
2.18.0.windows.1
^ permalink raw reply related [flat|nested] 3+ messages in thread* Re: [edk2-devel] [PATCH v2] NetworkPkg/DxeNetLib: Change the order of conditions in IF statement
2020-05-20 3:08 Zhang, Shenglei
@ 2020-05-20 11:41 ` Philippe Mathieu-Daudé
2020-05-20 12:48 ` Maciej Rabeda
0 siblings, 1 reply; 3+ messages in thread
From: Philippe Mathieu-Daudé @ 2020-05-20 11:41 UTC (permalink / raw)
To: devel, shenglei.zhang; +Cc: Maciej Rabeda, Siyuan Fu, Jiaxin Wu
On 5/20/20 5:08 AM, Zhang, Shenglei wrote:
> The condition, NET_HEADSPACE(&(Nbuf->BlockOp[Index])) < Len, is
> meaningless if Index = 0. So checking 'Index != 0' should be
> performed first in the if statement.
>
> Cc: Maciej Rabeda <maciej.rabeda@linux.intel.com>
> Cc: Siyuan Fu <siyuan.fu@intel.com>
> Cc: Jiaxin Wu <jiaxin.wu@intel.com>
> Signed-off-by: Shenglei Zhang <shenglei.zhang@intel.com>
> ---
>
> v2: Update 'Index > 0' to 'Index != 0'
>
> NetworkPkg/Library/DxeNetLib/NetBuffer.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/NetworkPkg/Library/DxeNetLib/NetBuffer.c b/NetworkPkg/Library/DxeNetLib/NetBuffer.c
> index a232802c9a21..329a17623d94 100644
> --- a/NetworkPkg/Library/DxeNetLib/NetBuffer.c
> +++ b/NetworkPkg/Library/DxeNetLib/NetBuffer.c
> @@ -1063,7 +1063,7 @@ NetbufAllocSpace (
> } else {
> NetbufGetByte (Nbuf, 0, &Index);
>
> - if ((NET_HEADSPACE(&(Nbuf->BlockOp[Index])) < Len) && (Index > 0)) {
> + if ((Index != 0) && (NET_HEADSPACE(&(Nbuf->BlockOp[Index])) < Len)) {
Reviewed-by: Philippe Mathieu-Daude <philmd@redhat.com>
> Index--;
> }
> }
>
^ permalink raw reply [flat|nested] 3+ messages in thread* Re: [edk2-devel] [PATCH v2] NetworkPkg/DxeNetLib: Change the order of conditions in IF statement
2020-05-20 11:41 ` [edk2-devel] " Philippe Mathieu-Daudé
@ 2020-05-20 12:48 ` Maciej Rabeda
0 siblings, 0 replies; 3+ messages in thread
From: Maciej Rabeda @ 2020-05-20 12:48 UTC (permalink / raw)
To: devel, philmd, shenglei.zhang; +Cc: Siyuan Fu, Jiaxin Wu
Merged:
https://github.com/tianocore/edk2/pull/634
https://github.com/tianocore/edk2/commit/d3733188a2162abf72dd08c0cedd1119b5cfe6c4
Thanks,
Maciej
On 20-May-20 13:41, Philippe Mathieu-Daudé wrote:
> On 5/20/20 5:08 AM, Zhang, Shenglei wrote:
>> The condition, NET_HEADSPACE(&(Nbuf->BlockOp[Index])) < Len, is
>> meaningless if Index = 0. So checking 'Index != 0' should be
>> performed first in the if statement.
>>
>> Cc: Maciej Rabeda <maciej.rabeda@linux.intel.com>
>> Cc: Siyuan Fu <siyuan.fu@intel.com>
>> Cc: Jiaxin Wu <jiaxin.wu@intel.com>
>> Signed-off-by: Shenglei Zhang <shenglei.zhang@intel.com>
>> ---
>>
>> v2: Update 'Index > 0' to 'Index != 0'
>>
>> NetworkPkg/Library/DxeNetLib/NetBuffer.c | 2 +-
>> 1 file changed, 1 insertion(+), 1 deletion(-)
>>
>> diff --git a/NetworkPkg/Library/DxeNetLib/NetBuffer.c
>> b/NetworkPkg/Library/DxeNetLib/NetBuffer.c
>> index a232802c9a21..329a17623d94 100644
>> --- a/NetworkPkg/Library/DxeNetLib/NetBuffer.c
>> +++ b/NetworkPkg/Library/DxeNetLib/NetBuffer.c
>> @@ -1063,7 +1063,7 @@ NetbufAllocSpace (
>> } else {
>> NetbufGetByte (Nbuf, 0, &Index);
>> - if ((NET_HEADSPACE(&(Nbuf->BlockOp[Index])) < Len) && (Index
>> > 0)) {
>> + if ((Index != 0) && (NET_HEADSPACE(&(Nbuf->BlockOp[Index])) <
>> Len)) {
>
> Reviewed-by: Philippe Mathieu-Daude <philmd@redhat.com>
>
>> Index--;
>> }
>> }
>>
>
>
>
>
^ permalink raw reply [flat|nested] 3+ messages in thread
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[not found] <16109DC42FE5E79D.3891@groups.io>
2020-05-20 3:10 ` [edk2-devel] [PATCH v2] NetworkPkg/DxeNetLib: Change the order of conditions in IF statement Zhang, Shenglei
2020-05-20 3:08 Zhang, Shenglei
2020-05-20 11:41 ` [edk2-devel] " Philippe Mathieu-Daudé
2020-05-20 12:48 ` Maciej Rabeda
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