Re: [dpdk-dev] [EXT] [PATCH 6/7] examples/ipsec-secgw: add support for defining initial sequence number value

[Akhil Goyal <gakhil@marvell.com>]

> Add esn field to SA definition block to allow initial ESN value
> 
Add description about the new option added and how to use it.


> Signed-off-by: Declan Doherty <declan.doherty@intel.com>
> Signed-off-by: Radu Nicolau <radu.nicolau@intel.com>
> ---
>  examples/ipsec-secgw/ipsec.c |  5 +++++
>  examples/ipsec-secgw/ipsec.h |  2 ++
>  examples/ipsec-secgw/sa.c    | 15 +++++++++++++++

Documentation missing again.

>  3 files changed, 22 insertions(+)
> 
> diff --git a/examples/ipsec-secgw/ipsec.c b/examples/ipsec-secgw/ipsec.c
> index aa68e4f827..28772da345 100644
> --- a/examples/ipsec-secgw/ipsec.c
> +++ b/examples/ipsec-secgw/ipsec.c
> @@ -234,6 +234,11 @@ create_inline_session(struct socket_ctx *skt_ctx,
> struct ipsec_sa *sa,
>  		sess_conf.ipsec.udp.dport = htons(sa->udp.dport);
>  	}
> 
> +	if (sa->esn > 0) {
> +		sess_conf.ipsec.options.esn = 1;
> +		sess_conf.ipsec.esn.value = sa->esn;
> +	}
> +
>  	struct rte_flow_action_security action_security;
>  	struct rte_flow_error err;
> 
> diff --git a/examples/ipsec-secgw/ipsec.h b/examples/ipsec-secgw/ipsec.h
> index 4f12c57dc3..db7988604a 100644
> --- a/examples/ipsec-secgw/ipsec.h
> +++ b/examples/ipsec-secgw/ipsec.h
> @@ -146,6 +146,8 @@ struct ipsec_sa {
>  	uint8_t udp_encap;
>  	uint16_t portid;
>  	uint16_t mss;
> +	uint16_t esn;
> +
>  	uint8_t fdir_qid;
>  	uint8_t fdir_flag;
> 
> diff --git a/examples/ipsec-secgw/sa.c b/examples/ipsec-secgw/sa.c
> index 37039e70fc..3ee5ed7dcf 100644
> --- a/examples/ipsec-secgw/sa.c
> +++ b/examples/ipsec-secgw/sa.c
> @@ -711,6 +711,16 @@ parse_sa_tokens(char **tokens, uint32_t n_tokens,
>  			continue;
>  		}
> 
> +		if (strcmp(tokens[ti], "esn") == 0) {
> +			INCREMENT_TOKEN_INDEX(ti, n_tokens, status);
> +			if (status->status < 0)
> +				return;
> +			rule->esn = atoll(tokens[ti]);
> +			if (status->status < 0)
> +				return;
> +			continue;
> +		}
> +
>  		if (strcmp(tokens[ti], "fallback") == 0) {
>  			struct rte_ipsec_session *fb;
> 
> @@ -1387,6 +1397,11 @@ fill_ipsec_sa_prm(struct rte_ipsec_sa_prm *prm,
> const struct ipsec_sa *ss,
>  		prm->ipsec_xform.mss = ss->mss;
>  	}
> 
> +	if (ss->esn > 0) {
> +		prm->ipsec_xform.options.esn = 1;
> +		prm->ipsec_xform.esn.value = ss->esn;
> +	}
> +
>  	if (IS_TRANSPORT(ss->flags)) {
>  		/* transport mode */
>  		prm->trs.proto = rc;
> --
> 2.25.1