Re: [dpdk-dev] [PATCH v3 2/2] ipsec: remove redundant replay_win_sz

["Ananyev, Konstantin" <konstantin.ananyev@intel.com>]

Hi Hemant,

> The rte_security lib has introduced replay_win_sz,
> so it can be removed from the rte_ipsec lib.
> 
> Also, the relaved tests,app are also update to reflect
> the usages.
> 
> Signed-off-by: Hemant Agrawal <hemant.agrawal@nxp.com>
> ---
> v3: fix the compilation issue
> 
>  app/test/test_ipsec.c                  |  2 +-
>  doc/guides/rel_notes/release_19_11.rst | 10 ++++++++--
>  examples/ipsec-secgw/ipsec.c           |  1 +
>  examples/ipsec-secgw/sa.c              |  2 +-
>  lib/librte_ipsec/Makefile              |  2 +-
>  lib/librte_ipsec/meson.build           |  1 +
>  lib/librte_ipsec/rte_ipsec_sa.h        |  6 ------
>  lib/librte_ipsec/sa.c                  |  4 ++--
>  8 files changed, 15 insertions(+), 13 deletions(-)
> 
> diff --git a/app/test/test_ipsec.c b/app/test/test_ipsec.c
> index 4007eff19..9e3dabd93 100644
> --- a/app/test/test_ipsec.c
> +++ b/app/test/test_ipsec.c
> @@ -689,7 +689,7 @@ fill_ipsec_param(uint32_t replay_win_sz, uint64_t flags)
> 
>  	prm->userdata = 1;
>  	prm->flags = flags;
> -	prm->replay_win_sz = replay_win_sz;
> +	prm->ipsec_xform.replay_win_sz = replay_win_sz;

We need to do it later - as on the next line (see below),
we'll overwrite whole ipsec_xform. 

> 
>  	/* setup ipsec xform */
>  	prm->ipsec_xform = ut_params->ipsec_xform;

diff --git a/app/test/test_ipsec.c b/app/test/test_ipsec.c
index 9e3dabd93..7dc83fee7 100644
--- a/app/test/test_ipsec.c
+++ b/app/test/test_ipsec.c
@@ -689,11 +689,11 @@ fill_ipsec_param(uint32_t replay_win_sz, uint64_t flags)

        prm->userdata = 1;
        prm->flags = flags;
-       prm->ipsec_xform.replay_win_sz = replay_win_sz;

        /* setup ipsec xform */
        prm->ipsec_xform = ut_params->ipsec_xform;
        prm->ipsec_xform.salt = (uint32_t)rte_rand();
+       prm->ipsec_xform.replay_win_sz = replay_win_sz;

        /* setup tunnel related fields */
        prm->tun.hdr_len = sizeof(ipv4_outer);


> diff --git a/doc/guides/rel_notes/release_19_11.rst b/doc/guides/rel_notes/release_19_11.rst
> index ae8e7b2f0..aa16c8422 100644
> --- a/doc/guides/rel_notes/release_19_11.rst
> +++ b/doc/guides/rel_notes/release_19_11.rst
> @@ -365,6 +365,12 @@ ABI Changes
>    align the Ethernet header on receive and all known encapsulations
>    preserve the alignment of the header.
> 
> +* security: A new field ''replay_win_sz'' has been added to the structure
> +  ``rte_security_ipsec_xform``, which specify the Anti replay window size
> +  to enable sequence replay attack handling.
> +
> +* ipsec: The field ''replay_win_sz'' has been removed from the structure
> +  ''rte_ipsec_sa_prm'' as it has been added to the security library.
> 
>  Shared Library Versions
>  -----------------------
> @@ -407,7 +413,7 @@ The libraries prepended with a plus sign were incremented in this version.
>       librte_gso.so.1
>       librte_hash.so.2
>       librte_ip_frag.so.1
> -     librte_ipsec.so.1
> +   + librte_ipsec.so.2
>       librte_jobstats.so.1
>       librte_kni.so.2
>       librte_kvargs.so.1
> @@ -437,7 +443,7 @@ The libraries prepended with a plus sign were incremented in this version.
>       librte_reorder.so.1
>       librte_ring.so.2
>     + librte_sched.so.4
> -     librte_security.so.2
> +   + librte_security.so.3
>       librte_stack.so.1
>       librte_table.so.3
>       librte_timer.so.1
> diff --git a/examples/ipsec-secgw/ipsec.c b/examples/ipsec-secgw/ipsec.c
> index 51fb22e8a..159e81f99 100644
> --- a/examples/ipsec-secgw/ipsec.c
> +++ b/examples/ipsec-secgw/ipsec.c
> @@ -49,6 +49,7 @@ set_ipsec_conf(struct ipsec_sa *sa, struct rte_security_ipsec_xform *ipsec)
>  		/* TODO support for Transport */
>  	}
>  	ipsec->esn_soft_limit = IPSEC_OFFLOAD_ESN_SOFTLIMIT;
> +	ipsec->replay_win_sz = app_sa_prm.window_size;
>  }
> 
>  int
> diff --git a/examples/ipsec-secgw/sa.c b/examples/ipsec-secgw/sa.c
> index 14ee94731..3d687c459 100644
> --- a/examples/ipsec-secgw/sa.c
> +++ b/examples/ipsec-secgw/sa.c
> @@ -1055,7 +1055,7 @@ fill_ipsec_app_sa_prm(struct rte_ipsec_sa_prm *prm,
> 
>  	prm->flags = app_prm->flags;
>  	prm->ipsec_xform.options.esn = app_prm->enable_esn;
> -	prm->replay_win_sz = app_prm->window_size;
> +	prm->ipsec_xform.replay_win_sz = app_prm->window_size;
>  }
> 
>  static int
> diff --git a/lib/librte_ipsec/Makefile b/lib/librte_ipsec/Makefile
> index 81fb99980..161ea9e3d 100644
> --- a/lib/librte_ipsec/Makefile
> +++ b/lib/librte_ipsec/Makefile
> @@ -14,7 +14,7 @@ LDLIBS += -lrte_cryptodev -lrte_security -lrte_hash
> 
>  EXPORT_MAP := rte_ipsec_version.map
> 
> -LIBABIVER := 1
> +LIBABIVER := 2
> 
>  # all source are stored in SRCS-y
>  SRCS-$(CONFIG_RTE_LIBRTE_IPSEC) += esp_inb.c
> diff --git a/lib/librte_ipsec/meson.build b/lib/librte_ipsec/meson.build
> index 70358526b..e8604dadd 100644
> --- a/lib/librte_ipsec/meson.build
> +++ b/lib/librte_ipsec/meson.build
> @@ -1,6 +1,7 @@
>  # SPDX-License-Identifier: BSD-3-Clause
>  # Copyright(c) 2018 Intel Corporation
> 
> +version = 2
>  allow_experimental_apis = true
> 
>  sources = files('esp_inb.c', 'esp_outb.c', 'sa.c', 'ses.c', 'ipsec_sad.c')
> diff --git a/lib/librte_ipsec/rte_ipsec_sa.h b/lib/librte_ipsec/rte_ipsec_sa.h
> index 47ce169d2..1cfde5874 100644
> --- a/lib/librte_ipsec/rte_ipsec_sa.h
> +++ b/lib/librte_ipsec/rte_ipsec_sa.h
> @@ -47,12 +47,6 @@ struct rte_ipsec_sa_prm {
>  			uint8_t proto;  /**< next header protocol */
>  		} trs; /**< transport mode related parameters */
>  	};
> -
> -	/**
> -	 * window size to enable sequence replay attack handling.
> -	 * replay checking is disabled if the window size is 0.
> -	 */
> -	uint32_t replay_win_sz;
>  };
> 
>  /**
> diff --git a/lib/librte_ipsec/sa.c b/lib/librte_ipsec/sa.c
> index 23d394b46..6f1d92c3c 100644
> --- a/lib/librte_ipsec/sa.c
> +++ b/lib/librte_ipsec/sa.c
> @@ -439,7 +439,7 @@ rte_ipsec_sa_size(const struct rte_ipsec_sa_prm *prm)
>  		return rc;
> 
>  	/* determine required size */
> -	wsz = prm->replay_win_sz;
> +	wsz = prm->ipsec_xform.replay_win_sz;
>  	return ipsec_sa_size(type, &wsz, &nb);
>  }
> 
> @@ -461,7 +461,7 @@ rte_ipsec_sa_init(struct rte_ipsec_sa *sa, const struct rte_ipsec_sa_prm *prm,
>  		return rc;
> 
>  	/* determine required size */
> -	wsz = prm->replay_win_sz;
> +	wsz = prm->ipsec_xform.replay_win_sz;
>  	sz = ipsec_sa_size(type, &wsz, &nb);
>  	if (sz < 0)
>  		return sz;
> --
> 2.17.1