[v2] examples/ipsec-secgw: fix pool usage for security session

  Currently, two separate mempools are being used for creating crypto
sessions and its private data.
crypto sessions are created and initialized separately, so a separate
mempool is passed to each API, but in case of security sessions, where
only one API create and initialize the private data as well.
So if session mempool is passed to create a security session, the
mempool element size is not sufficient enough to hold the private
data as well.
As a perfect solution, the security session create API should take 2
mempools for header and private data and initiatlize accordingly,
but that would mean an API breakage, which will be done in the next
release cycle. So introducing this patch as a workaround to resolve this
issue.

Fixes: 261bbff75e34 ("examples: use separate crypto session mempools")
Cc: roy.fan.zhang@intel.com
Cc: stable@dpdk.org

Signed-off-by: Akhil Goyal <akhil.goyal@nxp.com>
---
v2: incorporated Konstantin's comments.


 examples/ipsec-secgw/ipsec-secgw.c | 5 +++--
 examples/ipsec-secgw/ipsec.c       | 4 ++--
 2 files changed, 5 insertions(+), 4 deletions(-)
  

> -----Original Message-----
> From: Akhil Goyal [mailto:akhil.goyal@nxp.com]
> Sent: Tuesday, April 23, 2019 1:20 PM
> To: dev@dpdk.org
> Cc: Nicolau, Radu <radu.nicolau@intel.com>; Ananyev, Konstantin <konstantin.ananyev@intel.com>; Akhil Goyal <akhil.goyal@nxp.com>;
> Zhang, Roy Fan <roy.fan.zhang@intel.com>; stable@dpdk.org
> Subject: [PATCH v2] examples/ipsec-secgw: fix pool usage for security session
> 
> Currently, two separate mempools are being used for creating crypto
> sessions and its private data.
> crypto sessions are created and initialized separately, so a separate
> mempool is passed to each API, but in case of security sessions, where
> only one API create and initialize the private data as well.
> So if session mempool is passed to create a security session, the
> mempool element size is not sufficient enough to hold the private
> data as well.
> As a perfect solution, the security session create API should take 2
> mempools for header and private data and initiatlize accordingly,
> but that would mean an API breakage, which will be done in the next
> release cycle. So introducing this patch as a workaround to resolve this
> issue.
> 
> Fixes: 261bbff75e34 ("examples: use separate crypto session mempools")
> Cc: roy.fan.zhang@intel.com
> Cc: stable@dpdk.org
> 
> Signed-off-by: Akhil Goyal <akhil.goyal@nxp.com>
> ---
> v2: incorporated Konstantin's comments.
> 
> 
>  examples/ipsec-secgw/ipsec-secgw.c | 5 +++--
>  examples/ipsec-secgw/ipsec.c       | 4 ++--
>  2 files changed, 5 insertions(+), 4 deletions(-)
> 
> diff --git a/examples/ipsec-secgw/ipsec-secgw.c b/examples/ipsec-secgw/ipsec-secgw.c
> index 2e203393d..478dd80c2 100644
> --- a/examples/ipsec-secgw/ipsec-secgw.c
> +++ b/examples/ipsec-secgw/ipsec-secgw.c
> @@ -1791,7 +1791,7 @@ cryptodevs_init(void)
>  				rte_eth_dev_get_sec_ctx(port_id)) {
>  			int socket_id = rte_eth_dev_socket_id(port_id);
> 
> -			if (!socket_ctx[socket_id].session_pool) {
> +			if (!socket_ctx[socket_id].session_priv_pool) {
>  				char mp_name[RTE_MEMPOOL_NAMESIZE];
>  				struct rte_mempool *sess_mp;
> 
> @@ -1811,7 +1811,8 @@ cryptodevs_init(void)
>  				else
>  					printf("Allocated session pool "
>  						"on socket %d\n", socket_id);
> -				socket_ctx[socket_id].session_pool = sess_mp;
> +				socket_ctx[socket_id].session_priv_pool =
> +						sess_mp;
>  			}
>  		}
>  	}
> diff --git a/examples/ipsec-secgw/ipsec.c b/examples/ipsec-secgw/ipsec.c
> index 4352cb842..7b8533077 100644
> --- a/examples/ipsec-secgw/ipsec.c
> +++ b/examples/ipsec-secgw/ipsec.c
> @@ -102,7 +102,7 @@ create_session(struct ipsec_ctx *ipsec_ctx, struct ipsec_sa *sa)
>  			set_ipsec_conf(sa, &(sess_conf.ipsec));
> 
>  			sa->sec_session = rte_security_session_create(ctx,
> -					&sess_conf, ipsec_ctx->session_pool);
> +					&sess_conf, ipsec_ctx->session_priv_pool);
>  			if (sa->sec_session == NULL) {
>  				RTE_LOG(ERR, IPSEC,
>  				"SEC Session init failed: err: %d\n", ret);
> @@ -117,7 +117,7 @@ create_session(struct ipsec_ctx *ipsec_ctx, struct ipsec_sa *sa)
>  			int ret = 0;
> 
>  			sa->sec_session = rte_security_session_create(ctx,
> -					&sess_conf, ipsec_ctx->session_pool);
> +					&sess_conf, ipsec_ctx->session_priv_pool);
>  			if (sa->sec_session == NULL) {
>  				RTE_LOG(ERR, IPSEC,
>  				"SEC Session init failed: err: %d\n", ret);

Acked-by: Konstantin Ananyev <konstantin.ananyev@intel.com>

> --
> 2.17.1
  

> 
> Acked-by: Konstantin Ananyev <konstantin.ananyev@intel.com>
> 
Applied to dpdk-next-crypto