diff mbox series

app/testpmd: fix RSS key

Message ID 20210118085937.12072-1-alvinx.zhang@intel.com (mailing list archive)
State Superseded, archived
Delegated to: Ferruh Yigit
Headers show
Series app/testpmd: fix RSS key | expand

Checks

Context Check Description
ci/iol-testing warning Testing issues
ci/iol-abi-testing success Testing PASS
ci/iol-mellanox-Performance success Performance Testing PASS
ci/intel-Testing success Testing PASS
ci/Intel-compilation success Compilation OK
ci/iol-mellanox-Functional success Functional Testing PASS
ci/iol-intel-Performance success Performance Testing PASS
ci/iol-intel-Functional success Functional Testing PASS
ci/iol-broadcom-Functional success Functional Testing PASS
ci/checkpatch success coding style OK

Commit Message

Alvin Zhang Jan. 18, 2021, 8:59 a.m. UTC
From: Alvin Zhang <alvinx.zhang@intel.com>

Since the patch '1848b117' has set the value of key in 'struct
rte_flow_action_rss' to NULL, the PMD cannot get the RSS key now.

This patch sets offset and size of the key pointer as the first
parameter of the token 'key' and copies the start address of the
'HEX' data to the location specified by the first parameter of
the token.

Fixes: 1848b117cca1 ("app/testpmd: fix RSS key for flow API RSS rule")
Cc: stable@dpdk.org

Signed-off-by: Alvin Zhang <alvinx.zhang@intel.com>
---
 app/test-pmd/cmdline_flow.c | 24 +++++++++++++-----------
 1 file changed, 13 insertions(+), 11 deletions(-)

Comments

Ferruh Yigit Jan. 19, 2021, 7:14 p.m. UTC | #1
On 1/18/2021 8:59 AM, Zhang,Alvin wrote:
> From: Alvin Zhang <alvinx.zhang@intel.com>
> 
> Since the patch '1848b117' has set the value of key in 'struct
> rte_flow_action_rss' to NULL, the PMD cannot get the RSS key now.
> 
> This patch sets offset and size of the key pointer as the first
> parameter of the token 'key' and copies the start address of the
> 'HEX' data to the location specified by the first parameter of
> the token.
> 

Can you please put the rte_flow command that enables reproducing this defect, it 
may help in the future?

> Fixes: 1848b117cca1 ("app/testpmd: fix RSS key for flow API RSS rule")
> Cc: stable@dpdk.org
> 
> Signed-off-by: Alvin Zhang <alvinx.zhang@intel.com>
> ---
>   app/test-pmd/cmdline_flow.c | 24 +++++++++++++-----------
>   1 file changed, 13 insertions(+), 11 deletions(-)
> 
> diff --git a/app/test-pmd/cmdline_flow.c b/app/test-pmd/cmdline_flow.c
> index 585cab9..6eb46d3 100644
> --- a/app/test-pmd/cmdline_flow.c
> +++ b/app/test-pmd/cmdline_flow.c
> @@ -3403,7 +3403,10 @@ static int comp_set_sample_index(struct context *, const struct token *,
>   		.name = "key",
>   		.help = "RSS hash key",
>   		.next = NEXT(action_rss, NEXT_ENTRY(HEX)),
> -		.args = ARGS(ARGS_ENTRY_ARB(0, 0),
> +		.args = ARGS(ARGS_ENTRY_ARB
> +			     (offsetof(struct action_rss_data, conf) +
> +			      offsetof(struct rte_flow_action_rss, key),
> +			      sizeof(((struct rte_flow_action_rss *)0)->key)),


+1, it is required to write the address, and I confirm this enables getting 
'key' value to the PMD.

>   			     ARGS_ENTRY_ARB
>   			     (offsetof(struct action_rss_data, conf) +
>   			      offsetof(struct rte_flow_action_rss, key_len),
> @@ -6495,19 +6498,18 @@ static int comp_set_sample_index(struct context *, const struct token *,
>   	if (ctx->objmask)
>   		memset((uint8_t *)ctx->objmask + arg_data->offset,
>   					0xff, hexlen);
> +
>   	/* Save address if requested. */
>   	if (arg_addr->size) {
> -		memcpy((uint8_t *)ctx->object + arg_addr->offset,
> -		       (void *[]){
> -			(uint8_t *)ctx->object + arg_data->offset
> -		       },
> -		       arg_addr->size);
> +		if (arg_addr->size < sizeof(void *))
> +			goto error;

Above two lines seems only actual change in this function, others are 
refactoring the assignment.

1) why this check required, I think we can ignore it.
2) What do you think to remove the refactoring to reduce the change to the 
actual fix?

> +
> +		*(void **)((uint8_t *)ctx->object + arg_addr->offset) =
> +				(uint8_t *)ctx->object + arg_data->offset;
> +
>   		if (ctx->objmask)
> -			memcpy((uint8_t *)ctx->objmask + arg_addr->offset,
> -			       (void *[]){
> -				(uint8_t *)ctx->objmask + arg_data->offset
> -			       },
> -			       arg_addr->size);
> +			*(void **)((uint8_t *)ctx->objmask + arg_addr->offset) =
> +				(uint8_t *)ctx->objmask + arg_data->offset;
>   	}
>   	return len;
>   error:
>
Alvin Zhang Jan. 21, 2021, 9:35 a.m. UTC | #2
Hi Ferruh,

Thanks for your review.
I will modify the patch in V2.

Alvin

> -----Original Message-----
> From: Ferruh Yigit <ferruh.yigit@intel.com>
> Sent: Wednesday, January 20, 2021 3:15 AM
> To: Zhang, AlvinX <alvinx.zhang@intel.com>
> Cc: dev@dpdk.org; stable@dpdk.org
> Subject: Re: [PATCH] app/testpmd: fix RSS key
> 
> On 1/18/2021 8:59 AM, Zhang,Alvin wrote:
> > From: Alvin Zhang <alvinx.zhang@intel.com>
> >
> > Since the patch '1848b117' has set the value of key in 'struct
> > rte_flow_action_rss' to NULL, the PMD cannot get the RSS key now.
> >
> > This patch sets offset and size of the key pointer as the first
> > parameter of the token 'key' and copies the start address of the 'HEX'
> > data to the location specified by the first parameter of the token.
> >
> 
> Can you please put the rte_flow command that enables reproducing this defect,
> it may help in the future?
> 
> > Fixes: 1848b117cca1 ("app/testpmd: fix RSS key for flow API RSS rule")
> > Cc: stable@dpdk.org
> >
> > Signed-off-by: Alvin Zhang <alvinx.zhang@intel.com>
> > ---
> >   app/test-pmd/cmdline_flow.c | 24 +++++++++++++-----------
> >   1 file changed, 13 insertions(+), 11 deletions(-)
> >
> > diff --git a/app/test-pmd/cmdline_flow.c b/app/test-pmd/cmdline_flow.c
> > index 585cab9..6eb46d3 100644
> > --- a/app/test-pmd/cmdline_flow.c
> > +++ b/app/test-pmd/cmdline_flow.c
> > @@ -3403,7 +3403,10 @@ static int comp_set_sample_index(struct context
> *, const struct token *,
> >   		.name = "key",
> >   		.help = "RSS hash key",
> >   		.next = NEXT(action_rss, NEXT_ENTRY(HEX)),
> > -		.args = ARGS(ARGS_ENTRY_ARB(0, 0),
> > +		.args = ARGS(ARGS_ENTRY_ARB
> > +			     (offsetof(struct action_rss_data, conf) +
> > +			      offsetof(struct rte_flow_action_rss, key),
> > +			      sizeof(((struct rte_flow_action_rss *)0)->key)),
> 
> 
> +1, it is required to write the address, and I confirm this enables
> +getting
> 'key' value to the PMD.
> 
> >   			     ARGS_ENTRY_ARB
> >   			     (offsetof(struct action_rss_data, conf) +
> >   			      offsetof(struct rte_flow_action_rss, key_len), @@
> -6495,19
> > +6498,18 @@ static int comp_set_sample_index(struct context *, const
> struct token *,
> >   	if (ctx->objmask)
> >   		memset((uint8_t *)ctx->objmask + arg_data->offset,
> >   					0xff, hexlen);
> > +
> >   	/* Save address if requested. */
> >   	if (arg_addr->size) {
> > -		memcpy((uint8_t *)ctx->object + arg_addr->offset,
> > -		       (void *[]){
> > -			(uint8_t *)ctx->object + arg_data->offset
> > -		       },
> > -		       arg_addr->size);
> > +		if (arg_addr->size < sizeof(void *))
> > +			goto error;
> 
> Above two lines seems only actual change in this function, others are refactoring
> the assignment.
> 
> 1) why this check required, I think we can ignore it.
> 2) What do you think to remove the refactoring to reduce the change to the
> actual fix?
> 
> > +
> > +		*(void **)((uint8_t *)ctx->object + arg_addr->offset) =
> > +				(uint8_t *)ctx->object + arg_data->offset;
> > +
> >   		if (ctx->objmask)
> > -			memcpy((uint8_t *)ctx->objmask + arg_addr->offset,
> > -			       (void *[]){
> > -				(uint8_t *)ctx->objmask + arg_data->offset
> > -			       },
> > -			       arg_addr->size);
> > +			*(void **)((uint8_t *)ctx->objmask + arg_addr->offset) =
> > +				(uint8_t *)ctx->objmask + arg_data->offset;
> >   	}
> >   	return len;
> >   error:
> >
diff mbox series

Patch

diff --git a/app/test-pmd/cmdline_flow.c b/app/test-pmd/cmdline_flow.c
index 585cab9..6eb46d3 100644
--- a/app/test-pmd/cmdline_flow.c
+++ b/app/test-pmd/cmdline_flow.c
@@ -3403,7 +3403,10 @@  static int comp_set_sample_index(struct context *, const struct token *,
 		.name = "key",
 		.help = "RSS hash key",
 		.next = NEXT(action_rss, NEXT_ENTRY(HEX)),
-		.args = ARGS(ARGS_ENTRY_ARB(0, 0),
+		.args = ARGS(ARGS_ENTRY_ARB
+			     (offsetof(struct action_rss_data, conf) +
+			      offsetof(struct rte_flow_action_rss, key),
+			      sizeof(((struct rte_flow_action_rss *)0)->key)),
 			     ARGS_ENTRY_ARB
 			     (offsetof(struct action_rss_data, conf) +
 			      offsetof(struct rte_flow_action_rss, key_len),
@@ -6495,19 +6498,18 @@  static int comp_set_sample_index(struct context *, const struct token *,
 	if (ctx->objmask)
 		memset((uint8_t *)ctx->objmask + arg_data->offset,
 					0xff, hexlen);
+
 	/* Save address if requested. */
 	if (arg_addr->size) {
-		memcpy((uint8_t *)ctx->object + arg_addr->offset,
-		       (void *[]){
-			(uint8_t *)ctx->object + arg_data->offset
-		       },
-		       arg_addr->size);
+		if (arg_addr->size < sizeof(void *))
+			goto error;
+
+		*(void **)((uint8_t *)ctx->object + arg_addr->offset) =
+				(uint8_t *)ctx->object + arg_data->offset;
+
 		if (ctx->objmask)
-			memcpy((uint8_t *)ctx->objmask + arg_addr->offset,
-			       (void *[]){
-				(uint8_t *)ctx->objmask + arg_data->offset
-			       },
-			       arg_addr->size);
+			*(void **)((uint8_t *)ctx->objmask + arg_addr->offset) =
+				(uint8_t *)ctx->objmask + arg_data->offset;
 	}
 	return len;
 error: