[dpdk-dev] [PATCH] fib: add rib extension size parameter

[dpdk-dev] [PATCH] fib: add rib extension size parameter

[Vladimir Medvedkin]

This patch adds a new parameter to the fib configuration to specify
the size of the extension for internal RIB structure.

Signed-off-by: Vladimir Medvedkin <vladimir.medvedkin@intel.com>
---
 app/test-fib/main.c        | 2 ++
 app/test/test_fib.c        | 5 +++++
 app/test/test_fib6.c       | 5 +++++
 app/test/test_fib6_perf.c  | 1 +
 app/test/test_fib_perf.c   | 1 +
 examples/l3fwd/l3fwd_fib.c | 2 ++
 lib/fib/rte_fib.c          | 2 +-
 lib/fib/rte_fib.h          | 2 ++
 lib/fib/rte_fib6.c         | 2 +-
 lib/fib/rte_fib6.h         | 2 ++
 10 files changed, 22 insertions(+), 2 deletions(-)

diff --git a/app/test-fib/main.c b/app/test-fib/main.c
index b0a97b0..ecd4201 100644
--- a/app/test-fib/main.c
+++ b/app/test-fib/main.c
@@ -857,6 +857,7 @@ run_v4(void)
 	conf.type = get_fib_type();
 	conf.default_nh = def_nh;
 	conf.max_routes = config.nb_routes * 2;
+	conf.rib_ext_sz = 0;
 	if (conf.type == RTE_FIB_DIR24_8) {
 		conf.dir24_8.nh_sz = __builtin_ctz(config.ent_sz);
 		conf.dir24_8.num_tbl8 = RTE_MIN(config.tbl8,
@@ -1057,6 +1058,7 @@ run_v6(void)
 	conf.type = get_fib_type();
 	conf.default_nh = def_nh;
 	conf.max_routes = config.nb_routes * 2;
+	conf.rib_ext_sz = 0;
 	if (conf.type == RTE_FIB6_TRIE) {
 		conf.trie.nh_sz = __builtin_ctz(config.ent_sz);
 		conf.trie.num_tbl8 = RTE_MIN(config.tbl8,
diff --git a/app/test/test_fib.c b/app/test/test_fib.c
index e46b993..eb69d6e 100644
--- a/app/test/test_fib.c
+++ b/app/test/test_fib.c
@@ -36,6 +36,7 @@ test_create_invalid(void)
 	struct rte_fib_conf config;
 
 	config.max_routes = MAX_ROUTES;
+	config.rib_ext_sz = 0;
 	config.default_nh = 0;
 	config.type = RTE_FIB_DUMMY;
 
@@ -94,6 +95,7 @@ test_multiple_create(void)
 	struct rte_fib_conf config;
 	int32_t i;
 
+	config.rib_ext_sz = 0;
 	config.default_nh = 0;
 	config.type = RTE_FIB_DUMMY;
 
@@ -120,6 +122,7 @@ test_free_null(void)
 	struct rte_fib_conf config;
 
 	config.max_routes = MAX_ROUTES;
+	config.rib_ext_sz = 0;
 	config.default_nh = 0;
 	config.type = RTE_FIB_DUMMY;
 
@@ -146,6 +149,7 @@ test_add_del_invalid(void)
 	uint8_t depth = 24;
 
 	config.max_routes = MAX_ROUTES;
+	config.rib_ext_sz = 0;
 	config.default_nh = 0;
 	config.type = RTE_FIB_DUMMY;
 
@@ -320,6 +324,7 @@ test_lookup(void)
 	int ret;
 
 	config.max_routes = MAX_ROUTES;
+	config.rib_ext_sz = 0;
 	config.default_nh = def_nh;
 	config.type = RTE_FIB_DUMMY;
 
diff --git a/app/test/test_fib6.c b/app/test/test_fib6.c
index 74abfc7..15ad091 100644
--- a/app/test/test_fib6.c
+++ b/app/test/test_fib6.c
@@ -38,6 +38,7 @@ test_create_invalid(void)
 	struct rte_fib6_conf config;
 
 	config.max_routes = MAX_ROUTES;
+	config.rib_ext_sz = 0;
 	config.default_nh = 0;
 	config.type = RTE_FIB6_DUMMY;
 
@@ -96,6 +97,7 @@ test_multiple_create(void)
 	struct rte_fib6_conf config;
 	int32_t i;
 
+	config.rib_ext_sz = 0;
 	config.default_nh = 0;
 	config.type = RTE_FIB6_DUMMY;
 
@@ -122,6 +124,7 @@ test_free_null(void)
 	struct rte_fib6_conf config;
 
 	config.max_routes = MAX_ROUTES;
+	config.rib_ext_sz = 0;
 	config.default_nh = 0;
 	config.type = RTE_FIB6_DUMMY;
 
@@ -149,6 +152,7 @@ test_add_del_invalid(void)
 	uint8_t depth = 24;
 
 	config.max_routes = MAX_ROUTES;
+	config.rib_ext_sz = 0;
 	config.default_nh = 0;
 	config.type = RTE_FIB6_DUMMY;
 
@@ -338,6 +342,7 @@ test_lookup(void)
 	int ret;
 
 	config.max_routes = MAX_ROUTES;
+	config.rib_ext_sz = 0;
 	config.default_nh = def_nh;
 	config.type = RTE_FIB6_DUMMY;
 
diff --git a/app/test/test_fib6_perf.c b/app/test/test_fib6_perf.c
index 56c799b..e565799 100644
--- a/app/test/test_fib6_perf.c
+++ b/app/test/test_fib6_perf.c
@@ -78,6 +78,7 @@ test_fib6_perf(void)
 	conf.type = RTE_FIB6_TRIE;
 	conf.default_nh = 0;
 	conf.max_routes = 1000000;
+	conf.rib_ext_sz = 0;
 	conf.trie.nh_sz = RTE_FIB6_TRIE_4B;
 	conf.trie.num_tbl8 = RTE_MIN(get_max_nh(conf.trie.nh_sz), 1000000U);
 
diff --git a/app/test/test_fib_perf.c b/app/test/test_fib_perf.c
index dd2e54d..86b2f83 100644
--- a/app/test/test_fib_perf.c
+++ b/app/test/test_fib_perf.c
@@ -323,6 +323,7 @@ test_fib_perf(void)
 	struct rte_fib_conf config;
 
 	config.max_routes = 2000000;
+	config.rib_ext_sz = 0;
 	config.type = RTE_FIB_DIR24_8;
 	config.default_nh = 0;
 	config.dir24_8.nh_sz = RTE_FIB_DIR24_8_4B;
diff --git a/examples/l3fwd/l3fwd_fib.c b/examples/l3fwd/l3fwd_fib.c
index f8d6a3a..18bf9c1 100644
--- a/examples/l3fwd/l3fwd_fib.c
+++ b/examples/l3fwd/l3fwd_fib.c
@@ -426,6 +426,7 @@ setup_fib(const int socketid)
 	/* Create the fib IPv4 table. */
 	config_ipv4.type = RTE_FIB_DIR24_8;
 	config_ipv4.max_routes = (1 << 16);
+	config_ipv4.rib_ext_sz = 0;
 	config_ipv4.default_nh = FIB_DEFAULT_HOP;
 	config_ipv4.dir24_8.nh_sz = RTE_FIB_DIR24_8_4B;
 	config_ipv4.dir24_8.num_tbl8 = (1 << 15);
@@ -475,6 +476,7 @@ setup_fib(const int socketid)
 
 	config.type = RTE_FIB6_TRIE;
 	config.max_routes = (1 << 16) - 1;
+	config.rib_ext_sz = 0;
 	config.default_nh = FIB_DEFAULT_HOP;
 	config.trie.nh_sz = RTE_FIB6_TRIE_4B;
 	config.trie.num_tbl8 = (1 << 15);
diff --git a/lib/fib/rte_fib.c b/lib/fib/rte_fib.c
index b354d4b..6ca180d 100644
--- a/lib/fib/rte_fib.c
+++ b/lib/fib/rte_fib.c
@@ -164,7 +164,7 @@ rte_fib_create(const char *name, int socket_id, struct rte_fib_conf *conf)
 		return NULL;
 	}
 
-	rib_conf.ext_sz = 0;
+	rib_conf.ext_sz = conf->rib_ext_sz;
 	rib_conf.max_nodes = conf->max_routes * 2;
 
 	rib = rte_rib_create(name, socket_id, &rib_conf);
diff --git a/lib/fib/rte_fib.h b/lib/fib/rte_fib.h
index acad209..570b4b6 100644
--- a/lib/fib/rte_fib.h
+++ b/lib/fib/rte_fib.h
@@ -84,6 +84,8 @@ struct rte_fib_conf {
 	/** Default value returned on lookup if there is no route */
 	uint64_t default_nh;
 	int	max_routes;
+	/** Size of the node extension in the internal RIB struct */
+	unsigned int rib_ext_sz;
 	union {
 		struct {
 			enum rte_fib_dir24_8_nh_sz nh_sz;
diff --git a/lib/fib/rte_fib6.c b/lib/fib/rte_fib6.c
index 44cc0c9..be79efe 100644
--- a/lib/fib/rte_fib6.c
+++ b/lib/fib/rte_fib6.c
@@ -165,7 +165,7 @@ rte_fib6_create(const char *name, int socket_id, struct rte_fib6_conf *conf)
 		return NULL;
 	}
 
-	rib_conf.ext_sz = 0;
+	rib_conf.ext_sz = conf->rib_ext_sz;
 	rib_conf.max_nodes = conf->max_routes * 2;
 
 	rib = rte_rib6_create(name, socket_id, &rib_conf);
diff --git a/lib/fib/rte_fib6.h b/lib/fib/rte_fib6.h
index 0e193b8..a9d6d04 100644
--- a/lib/fib/rte_fib6.h
+++ b/lib/fib/rte_fib6.h
@@ -75,6 +75,8 @@ struct rte_fib6_conf {
 	/** Default value returned on lookup if there is no route */
 	uint64_t default_nh;
 	int	max_routes;
+	/** Size of the node extension in the internal RIB struct */
+	unsigned int rib_ext_sz;
 	union {
 		struct {
 			enum rte_fib_trie_nh_sz nh_sz;
-- 
2.7.4

Re: [dpdk-dev] [PATCH] fib: add rib extension size parameter

[Conor Walsh]

> This patch adds a new parameter to the fib configuration to specify
> the size of the extension for internal RIB structure.
>
> Signed-off-by: Vladimir Medvedkin <vladimir.medvedkin@intel.com>
Tested-by: Conor Walsh <conor.walsh@intel.com>

Re: [dpdk-dev] [PATCH] fib: add rib extension size parameter

[Thomas Monjalon]

06/09/2021 17:55, Vladimir Medvedkin:
> This patch adds a new parameter to the fib configuration to specify
> the size of the extension for internal RIB structure.

It looks to be an announced API change.
What happens if the new field is not initialized in the app?
At least it would deserve a note in the release notes in API changes I think.

> --- a/examples/l3fwd/l3fwd_fib.c
> +++ b/examples/l3fwd/l3fwd_fib.c
> @@ -426,6 +426,7 @@ setup_fib(const int socketid)
>  	/* Create the fib IPv4 table. */
>  	config_ipv4.type = RTE_FIB_DIR24_8;
>  	config_ipv4.max_routes = (1 << 16);
> +	config_ipv4.rib_ext_sz = 0;
>  	config_ipv4.default_nh = FIB_DEFAULT_HOP;
>  	config_ipv4.dir24_8.nh_sz = RTE_FIB_DIR24_8_4B;
>  	config_ipv4.dir24_8.num_tbl8 = (1 << 15);
> @@ -475,6 +476,7 @@ setup_fib(const int socketid)
>  
>  	config.type = RTE_FIB6_TRIE;
>  	config.max_routes = (1 << 16) - 1;
> +	config.rib_ext_sz = 0;
>  	config.default_nh = FIB_DEFAULT_HOP;
>  	config.trie.nh_sz = RTE_FIB6_TRIE_4B;
>  	config.trie.num_tbl8 = (1 << 15);
> diff --git a/lib/fib/rte_fib.c b/lib/fib/rte_fib.c
> index b354d4b..6ca180d 100644
> --- a/lib/fib/rte_fib.c
> +++ b/lib/fib/rte_fib.c
> @@ -164,7 +164,7 @@ rte_fib_create(const char *name, int socket_id, struct rte_fib_conf *conf)
>  		return NULL;
>  	}
>  
> -	rib_conf.ext_sz = 0;
> +	rib_conf.ext_sz = conf->rib_ext_sz;
>  	rib_conf.max_nodes = conf->max_routes * 2;
>  
>  	rib = rte_rib_create(name, socket_id, &rib_conf);
> diff --git a/lib/fib/rte_fib.h b/lib/fib/rte_fib.h
> index acad209..570b4b6 100644
> --- a/lib/fib/rte_fib.h
> +++ b/lib/fib/rte_fib.h
> @@ -84,6 +84,8 @@ struct rte_fib_conf {
>  	/** Default value returned on lookup if there is no route */
>  	uint64_t default_nh;
>  	int	max_routes;
> +	/** Size of the node extension in the internal RIB struct */
> +	unsigned int rib_ext_sz;
>  	union {
>  		struct {
>  			enum rte_fib_dir24_8_nh_sz nh_sz;

Re: [dpdk-dev] [PATCH] fib: add rib extension size parameter

[Medvedkin, Vladimir]

Hi Thomas,

On 25/10/2021 19:23, Thomas Monjalon wrote:
> 06/09/2021 17:55, Vladimir Medvedkin:
>> This patch adds a new parameter to the fib configuration to specify
>> the size of the extension for internal RIB structure.
> 
> It looks to be an announced API change.
> What happens if the new field is not initialized in the app?
> At least it would deserve a note in the release notes in API changes I think.
> 

This patch was sent for an experimental library, so no update was required.
In the patch about the promotion of the FIB API to stable:

https://patches.dpdk.org/project/dpdk/patch/1630944075-363524-1-git-send-email-vladimir.medvedkin@intel.com/

I put a note about this patch and mentioned that it should be applied 
before promotion API to stable.

Can we accept it now or we have to wait for next LTS release?


>> --- a/examples/l3fwd/l3fwd_fib.c
>> +++ b/examples/l3fwd/l3fwd_fib.c
>> @@ -426,6 +426,7 @@ setup_fib(const int socketid)
>>   	/* Create the fib IPv4 table. */
>>   	config_ipv4.type = RTE_FIB_DIR24_8;
>>   	config_ipv4.max_routes = (1 << 16);
>> +	config_ipv4.rib_ext_sz = 0;
>>   	config_ipv4.default_nh = FIB_DEFAULT_HOP;
>>   	config_ipv4.dir24_8.nh_sz = RTE_FIB_DIR24_8_4B;
>>   	config_ipv4.dir24_8.num_tbl8 = (1 << 15);
>> @@ -475,6 +476,7 @@ setup_fib(const int socketid)
>>   
>>   	config.type = RTE_FIB6_TRIE;
>>   	config.max_routes = (1 << 16) - 1;
>> +	config.rib_ext_sz = 0;
>>   	config.default_nh = FIB_DEFAULT_HOP;
>>   	config.trie.nh_sz = RTE_FIB6_TRIE_4B;
>>   	config.trie.num_tbl8 = (1 << 15);
>> diff --git a/lib/fib/rte_fib.c b/lib/fib/rte_fib.c
>> index b354d4b..6ca180d 100644
>> --- a/lib/fib/rte_fib.c
>> +++ b/lib/fib/rte_fib.c
>> @@ -164,7 +164,7 @@ rte_fib_create(const char *name, int socket_id, struct rte_fib_conf *conf)
>>   		return NULL;
>>   	}
>>   
>> -	rib_conf.ext_sz = 0;
>> +	rib_conf.ext_sz = conf->rib_ext_sz;
>>   	rib_conf.max_nodes = conf->max_routes * 2;
>>   
>>   	rib = rte_rib_create(name, socket_id, &rib_conf);
>> diff --git a/lib/fib/rte_fib.h b/lib/fib/rte_fib.h
>> index acad209..570b4b6 100644
>> --- a/lib/fib/rte_fib.h
>> +++ b/lib/fib/rte_fib.h
>> @@ -84,6 +84,8 @@ struct rte_fib_conf {
>>   	/** Default value returned on lookup if there is no route */
>>   	uint64_t default_nh;
>>   	int	max_routes;
>> +	/** Size of the node extension in the internal RIB struct */
>> +	unsigned int rib_ext_sz;
>>   	union {
>>   		struct {
>>   			enum rte_fib_dir24_8_nh_sz nh_sz;
> 
> 
> 

-- 
Regards,
Vladimir

Re: [dpdk-dev] [PATCH] fib: add rib extension size parameter

[Thomas Monjalon]

26/10/2021 22:30, Medvedkin, Vladimir:
> Hi Thomas,
> 
> On 25/10/2021 19:23, Thomas Monjalon wrote:
> > 06/09/2021 17:55, Vladimir Medvedkin:
> >> This patch adds a new parameter to the fib configuration to specify
> >> the size of the extension for internal RIB structure.
> > 
> > It looks to be an announced API change.
> > What happens if the new field is not initialized in the app?
> > At least it would deserve a note in the release notes in API changes I think.
> > 
> 
> This patch was sent for an experimental library, so no update was required.
> In the patch about the promotion of the FIB API to stable:
> 
> https://patches.dpdk.org/project/dpdk/patch/1630944075-363524-1-git-send-email-vladimir.medvedkin@intel.com/
> 
> I put a note about this patch and mentioned that it should be applied 
> before promotion API to stable.

Indeed, we did not wait.

> Can we accept it now or we have to wait for next LTS release?

I think it is OK in this release.

You didn't reply about the release notes. Should we notify an API change?
Note: even experimental functions should be notified in release notes
if it requires a code change in the app.

Re: [dpdk-dev] [PATCH] fib: add rib extension size parameter

[Medvedkin, Vladimir]

Hi Thomas,

On 27/10/2021 10:28, Thomas Monjalon wrote:
> 26/10/2021 22:30, Medvedkin, Vladimir:
>> Hi Thomas,
>>
>> On 25/10/2021 19:23, Thomas Monjalon wrote:
>>> 06/09/2021 17:55, Vladimir Medvedkin:
>>>> This patch adds a new parameter to the fib configuration to specify
>>>> the size of the extension for internal RIB structure.
>>>
>>> It looks to be an announced API change.
>>> What happens if the new field is not initialized in the app?
>>> At least it would deserve a note in the release notes in API changes I think.
>>>
>>
>> This patch was sent for an experimental library, so no update was required.
>> In the patch about the promotion of the FIB API to stable:
>>
>> https://patches.dpdk.org/project/dpdk/patch/1630944075-363524-1-git-send-email-vladimir.medvedkin@intel.com/
>>
>> I put a note about this patch and mentioned that it should be applied
>> before promotion API to stable.
> 
> Indeed, we did not wait.
> 
>> Can we accept it now or we have to wait for next LTS release?
> 
> I think it is OK in this release.
> 

That's great!

> You didn't reply about the release notes. Should we notify an API change?
> Note: even experimental functions should be notified in release notes
> if it requires a code change in the app.
> 

Sure, I'll send v2 with release notes updates.

> 

-- 
Regards,
Vladimir

[dpdk-dev] [PATCH v2] fib: add rib extension size parameter

[Vladimir Medvedkin]

This patch adds a new parameter to the fib configuration to specify
the size of the extension for internal RIB structure.

Signed-off-by: Vladimir Medvedkin <vladimir.medvedkin@intel.com>
Tested-by: Conor Walsh <conor.walsh@intel.com>
---
 app/test-fib/main.c                    | 2 ++
 app/test/test_fib.c                    | 5 +++++
 app/test/test_fib6.c                   | 5 +++++
 app/test/test_fib6_perf.c              | 1 +
 app/test/test_fib_perf.c               | 1 +
 doc/guides/rel_notes/release_21_11.rst | 5 +++++
 examples/l3fwd/l3fwd_fib.c             | 2 ++
 lib/fib/rte_fib.c                      | 2 +-
 lib/fib/rte_fib.h                      | 2 ++
 lib/fib/rte_fib6.c                     | 2 +-
 lib/fib/rte_fib6.h                     | 2 ++
 11 files changed, 27 insertions(+), 2 deletions(-)

diff --git a/app/test-fib/main.c b/app/test-fib/main.c
index b0a97b0..ecd4201 100644
--- a/app/test-fib/main.c
+++ b/app/test-fib/main.c
@@ -857,6 +857,7 @@ run_v4(void)
 	conf.type = get_fib_type();
 	conf.default_nh = def_nh;
 	conf.max_routes = config.nb_routes * 2;
+	conf.rib_ext_sz = 0;
 	if (conf.type == RTE_FIB_DIR24_8) {
 		conf.dir24_8.nh_sz = __builtin_ctz(config.ent_sz);
 		conf.dir24_8.num_tbl8 = RTE_MIN(config.tbl8,
@@ -1057,6 +1058,7 @@ run_v6(void)
 	conf.type = get_fib_type();
 	conf.default_nh = def_nh;
 	conf.max_routes = config.nb_routes * 2;
+	conf.rib_ext_sz = 0;
 	if (conf.type == RTE_FIB6_TRIE) {
 		conf.trie.nh_sz = __builtin_ctz(config.ent_sz);
 		conf.trie.num_tbl8 = RTE_MIN(config.tbl8,
diff --git a/app/test/test_fib.c b/app/test/test_fib.c
index e46b993..eb69d6e 100644
--- a/app/test/test_fib.c
+++ b/app/test/test_fib.c
@@ -36,6 +36,7 @@ test_create_invalid(void)
 	struct rte_fib_conf config;
 
 	config.max_routes = MAX_ROUTES;
+	config.rib_ext_sz = 0;
 	config.default_nh = 0;
 	config.type = RTE_FIB_DUMMY;
 
@@ -94,6 +95,7 @@ test_multiple_create(void)
 	struct rte_fib_conf config;
 	int32_t i;
 
+	config.rib_ext_sz = 0;
 	config.default_nh = 0;
 	config.type = RTE_FIB_DUMMY;
 
@@ -120,6 +122,7 @@ test_free_null(void)
 	struct rte_fib_conf config;
 
 	config.max_routes = MAX_ROUTES;
+	config.rib_ext_sz = 0;
 	config.default_nh = 0;
 	config.type = RTE_FIB_DUMMY;
 
@@ -146,6 +149,7 @@ test_add_del_invalid(void)
 	uint8_t depth = 24;
 
 	config.max_routes = MAX_ROUTES;
+	config.rib_ext_sz = 0;
 	config.default_nh = 0;
 	config.type = RTE_FIB_DUMMY;
 
@@ -320,6 +324,7 @@ test_lookup(void)
 	int ret;
 
 	config.max_routes = MAX_ROUTES;
+	config.rib_ext_sz = 0;
 	config.default_nh = def_nh;
 	config.type = RTE_FIB_DUMMY;
 
diff --git a/app/test/test_fib6.c b/app/test/test_fib6.c
index 74abfc7..15ad091 100644
--- a/app/test/test_fib6.c
+++ b/app/test/test_fib6.c
@@ -38,6 +38,7 @@ test_create_invalid(void)
 	struct rte_fib6_conf config;
 
 	config.max_routes = MAX_ROUTES;
+	config.rib_ext_sz = 0;
 	config.default_nh = 0;
 	config.type = RTE_FIB6_DUMMY;
 
@@ -96,6 +97,7 @@ test_multiple_create(void)
 	struct rte_fib6_conf config;
 	int32_t i;
 
+	config.rib_ext_sz = 0;
 	config.default_nh = 0;
 	config.type = RTE_FIB6_DUMMY;
 
@@ -122,6 +124,7 @@ test_free_null(void)
 	struct rte_fib6_conf config;
 
 	config.max_routes = MAX_ROUTES;
+	config.rib_ext_sz = 0;
 	config.default_nh = 0;
 	config.type = RTE_FIB6_DUMMY;
 
@@ -149,6 +152,7 @@ test_add_del_invalid(void)
 	uint8_t depth = 24;
 
 	config.max_routes = MAX_ROUTES;
+	config.rib_ext_sz = 0;
 	config.default_nh = 0;
 	config.type = RTE_FIB6_DUMMY;
 
@@ -338,6 +342,7 @@ test_lookup(void)
 	int ret;
 
 	config.max_routes = MAX_ROUTES;
+	config.rib_ext_sz = 0;
 	config.default_nh = def_nh;
 	config.type = RTE_FIB6_DUMMY;
 
diff --git a/app/test/test_fib6_perf.c b/app/test/test_fib6_perf.c
index 56c799b..e565799 100644
--- a/app/test/test_fib6_perf.c
+++ b/app/test/test_fib6_perf.c
@@ -78,6 +78,7 @@ test_fib6_perf(void)
 	conf.type = RTE_FIB6_TRIE;
 	conf.default_nh = 0;
 	conf.max_routes = 1000000;
+	conf.rib_ext_sz = 0;
 	conf.trie.nh_sz = RTE_FIB6_TRIE_4B;
 	conf.trie.num_tbl8 = RTE_MIN(get_max_nh(conf.trie.nh_sz), 1000000U);
 
diff --git a/app/test/test_fib_perf.c b/app/test/test_fib_perf.c
index dd2e54d..86b2f83 100644
--- a/app/test/test_fib_perf.c
+++ b/app/test/test_fib_perf.c
@@ -323,6 +323,7 @@ test_fib_perf(void)
 	struct rte_fib_conf config;
 
 	config.max_routes = 2000000;
+	config.rib_ext_sz = 0;
 	config.type = RTE_FIB_DIR24_8;
 	config.default_nh = 0;
 	config.dir24_8.nh_sz = RTE_FIB_DIR24_8_4B;
diff --git a/doc/guides/rel_notes/release_21_11.rst b/doc/guides/rel_notes/release_21_11.rst
index 1ccac87..f4d4444 100644
--- a/doc/guides/rel_notes/release_21_11.rst
+++ b/doc/guides/rel_notes/release_21_11.rst
@@ -305,6 +305,11 @@ New Features
     * Pcapng format with timestamps and meta-data.
     * Fixes packet capture with stripped VLAN tags.
 
+* **Updated FIB library API.**
+
+  Added the ``rib_ext_sz`` field to ``rte_fib_conf`` and ``rte_fib6_conf``
+  so that user can specify the size of the rib extension inside the fib.
+
 
 Removed Items
 -------------
diff --git a/examples/l3fwd/l3fwd_fib.c b/examples/l3fwd/l3fwd_fib.c
index ca0f350..f5c685a 100644
--- a/examples/l3fwd/l3fwd_fib.c
+++ b/examples/l3fwd/l3fwd_fib.c
@@ -590,6 +590,7 @@ setup_fib(const int socketid)
 	/* Create the fib IPv4 table. */
 	config_ipv4.type = RTE_FIB_DIR24_8;
 	config_ipv4.max_routes = (1 << 16);
+	config_ipv4.rib_ext_sz = 0;
 	config_ipv4.default_nh = FIB_DEFAULT_HOP;
 	config_ipv4.dir24_8.nh_sz = RTE_FIB_DIR24_8_4B;
 	config_ipv4.dir24_8.num_tbl8 = (1 << 15);
@@ -639,6 +640,7 @@ setup_fib(const int socketid)
 
 	config.type = RTE_FIB6_TRIE;
 	config.max_routes = (1 << 16) - 1;
+	config.rib_ext_sz = 0;
 	config.default_nh = FIB_DEFAULT_HOP;
 	config.trie.nh_sz = RTE_FIB6_TRIE_4B;
 	config.trie.num_tbl8 = (1 << 15);
diff --git a/lib/fib/rte_fib.c b/lib/fib/rte_fib.c
index b354d4b..6ca180d 100644
--- a/lib/fib/rte_fib.c
+++ b/lib/fib/rte_fib.c
@@ -164,7 +164,7 @@ rte_fib_create(const char *name, int socket_id, struct rte_fib_conf *conf)
 		return NULL;
 	}
 
-	rib_conf.ext_sz = 0;
+	rib_conf.ext_sz = conf->rib_ext_sz;
 	rib_conf.max_nodes = conf->max_routes * 2;
 
 	rib = rte_rib_create(name, socket_id, &rib_conf);
diff --git a/lib/fib/rte_fib.h b/lib/fib/rte_fib.h
index ac54f83..b3c59df 100644
--- a/lib/fib/rte_fib.h
+++ b/lib/fib/rte_fib.h
@@ -80,6 +80,8 @@ struct rte_fib_conf {
 	/** Default value returned on lookup if there is no route */
 	uint64_t default_nh;
 	int	max_routes;
+	/** Size of the node extension in the internal RIB struct */
+	unsigned int rib_ext_sz;
 	union {
 		struct {
 			enum rte_fib_dir24_8_nh_sz nh_sz;
diff --git a/lib/fib/rte_fib6.c b/lib/fib/rte_fib6.c
index 44cc0c9..be79efe 100644
--- a/lib/fib/rte_fib6.c
+++ b/lib/fib/rte_fib6.c
@@ -165,7 +165,7 @@ rte_fib6_create(const char *name, int socket_id, struct rte_fib6_conf *conf)
 		return NULL;
 	}
 
-	rib_conf.ext_sz = 0;
+	rib_conf.ext_sz = conf->rib_ext_sz;
 	rib_conf.max_nodes = conf->max_routes * 2;
 
 	rib = rte_rib6_create(name, socket_id, &rib_conf);
diff --git a/lib/fib/rte_fib6.h b/lib/fib/rte_fib6.h
index f9d7812..95879af 100644
--- a/lib/fib/rte_fib6.h
+++ b/lib/fib/rte_fib6.h
@@ -71,6 +71,8 @@ struct rte_fib6_conf {
 	/** Default value returned on lookup if there is no route */
 	uint64_t default_nh;
 	int	max_routes;
+	/** Size of the node extension in the internal RIB struct */
+	unsigned int rib_ext_sz;
 	union {
 		struct {
 			enum rte_fib_trie_nh_sz nh_sz;
-- 
2.7.4

Re: [dpdk-dev] [PATCH v2] fib: add rib extension size parameter

[Thomas Monjalon]

27/10/2021 17:49, Vladimir Medvedkin:
> This patch adds a new parameter to the fib configuration to specify
> the size of the extension for internal RIB structure.
> 
> Signed-off-by: Vladimir Medvedkin <vladimir.medvedkin@intel.com>
> Tested-by: Conor Walsh <conor.walsh@intel.com>
> ---
> --- a/doc/guides/rel_notes/release_21_11.rst
> +++ b/doc/guides/rel_notes/release_21_11.rst
> @@ -305,6 +305,11 @@ New Features
>      * Pcapng format with timestamps and meta-data.
>      * Fixes packet capture with stripped VLAN tags.
>  
> +* **Updated FIB library API.**
> +
> +  Added the ``rib_ext_sz`` field to ``rte_fib_conf`` and ``rte_fib6_conf``
> +  so that user can specify the size of the rib extension inside the fib.

It should be notified in the API section.
rib & fib should be uppercases.
I fix myself.

Applied, thanks.