>
> Add support to allow user to specific MSS for TSO offload on a per SA
> basis. MSS configuration in the context of IPsec is only supported for
> outbound SA's in the context of an inline IPsec Crypto offload.
If this feature is enabled (by mss config file option), shouldn't we check and
request
RTE_ETH_TX_OFFLOAD_UDP_TSO and RTE_ETH_TX_OFFLOAD_TCP_TSO?
As it is done for other TX offloads.
> Signed-off-by: Declan Doherty <declan.dohe...@intel.com>
> Signed-off-by: Radu Nicolau <radu.nico...@intel.com>
> ---
> doc/guides/rel_notes/release_21_11.rst | 4 ++++
> doc/guides/sample_app_ug/ipsec_secgw.rst | 11 +++++++++++
> examples/ipsec-secgw/ipsec-secgw.c | 4 ++++
> examples/ipsec-secgw/ipsec.h | 1 +
> examples/ipsec-secgw/ipsec_process.c | 25 ++++++++++++++++++++++++
> examples/ipsec-secgw/sa.c | 10 ++++++++++
> 6 files changed, 55 insertions(+)
>
> diff --git a/doc/guides/rel_notes/release_21_11.rst
> b/doc/guides/rel_notes/release_21_11.rst
> index b5b5abadee..8d1767b084 100644
> --- a/doc/guides/rel_notes/release_21_11.rst
> +++ b/doc/guides/rel_notes/release_21_11.rst
> @@ -306,6 +306,10 @@ New Features
> * Pcapng format with timestamps and meta-data.
> * Fixes packet capture with stripped VLAN tags.
>
> +* **IPsec Security Gateway sample application new features.**
> +
> + * Added support for TSO
> +
>
> Removed Items
> -------------
> diff --git a/doc/guides/sample_app_ug/ipsec_secgw.rst
> b/doc/guides/sample_app_ug/ipsec_secgw.rst
> index 782574dd39..639d309a6e 100644
> --- a/doc/guides/sample_app_ug/ipsec_secgw.rst
> +++ b/doc/guides/sample_app_ug/ipsec_secgw.rst
> @@ -720,6 +720,17 @@ where each options means:
>
> * *udp-encap*
>
> + ``<mss>``
> +
> + * Maximum segment size for TSO offload, available for egress SAs only.
> +
> + * Optional: Yes, TSO offload not set by default
> +
> + * Syntax:
> +
> + * *mss N* N is the segment size in bytes
> +
> +
> Example SA rules:
>
> .. code-block:: console
> diff --git a/examples/ipsec-secgw/ipsec-secgw.c
> b/examples/ipsec-secgw/ipsec-secgw.c
> index 4bdf99b62b..5fcf424efe 100644
> --- a/examples/ipsec-secgw/ipsec-secgw.c
> +++ b/examples/ipsec-secgw/ipsec-secgw.c
> @@ -398,6 +398,10 @@ prepare_one_packet(struct rte_mbuf *pkt, struct
> ipsec_traffic *t)
> pkt->l2_len = 0;
> pkt->l3_len = sizeof(*iph4);
> pkt->packet_type |= RTE_PTYPE_L3_IPV4;
> + if (pkt->packet_type & RTE_PTYPE_L4_TCP)
> + pkt->l4_len = sizeof(struct rte_tcp_hdr);
> + else if (pkt->packet_type & RTE_PTYPE_L4_UDP)
> + pkt->l4_len = sizeof(struct rte_udp_hdr);
> } else if (eth->ether_type == rte_cpu_to_be_16(RTE_ETHER_TYPE_IPV6)) {
> int next_proto;
> size_t l3len, ext_len;
> diff --git a/examples/ipsec-secgw/ipsec.h b/examples/ipsec-secgw/ipsec.h
> index 8405c48171..2c3640833d 100644
> --- a/examples/ipsec-secgw/ipsec.h
> +++ b/examples/ipsec-secgw/ipsec.h
> @@ -137,6 +137,7 @@ struct ipsec_sa {
> enum rte_security_ipsec_sa_direction direction;
> uint8_t udp_encap;
> uint16_t portid;
> + uint16_t mss;
> uint8_t fdir_qid;
> uint8_t fdir_flag;
>
> diff --git a/examples/ipsec-secgw/ipsec_process.c
> b/examples/ipsec-secgw/ipsec_process.c
> index 5012e1a6a4..26c6c2fe84 100644
> --- a/examples/ipsec-secgw/ipsec_process.c
> +++ b/examples/ipsec-secgw/ipsec_process.c
> @@ -222,6 +222,31 @@ prep_process_group(void *sa, struct rte_mbuf *mb[],
> uint32_t cnt)
> for (j = 0; j != cnt; j++) {
> priv = get_priv(mb[j]);
> priv->sa = sa;
> + /* setup TSO related fields if TSO enabled*/
> + if (priv->sa->mss) {
> + mb[j]->tso_segsz = priv->sa->mss;
> +
> + if ((IS_TUNNEL(priv->sa->flags))) {
> + mb[j]->outer_l3_len = mb[j]->l3_len;
> + mb[j]->outer_l2_len = mb[j]->l2_len;
> + mb[j]->ol_flags |=
> + (RTE_MBUF_F_TX_OUTER_IP_CKSUM |
> + RTE_MBUF_F_TX_TUNNEL_ESP);
> + }
> + uint32_t ptype = mb[j]->packet_type;
> + if (ptype & RTE_PTYPE_L4_TCP)
> + mb[j]->ol_flags |=
> + (RTE_MBUF_F_TX_TCP_SEG |
> + RTE_MBUF_F_TX_TCP_CKSUM);
> + else
> + mb[j]->ol_flags |=
> + (RTE_MBUF_F_TX_UDP_SEG |
> + RTE_MBUF_F_TX_UDP_CKSUM);
> + if (RTE_ETH_IS_IPV4_HDR(ptype))
> + mb[j]->ol_flags |= RTE_MBUF_F_TX_OUTER_IPV4;
> + else
> + mb[j]->ol_flags |= RTE_MBUF_F_TX_OUTER_IPV6;
> + }
> }
> }
>
> diff --git a/examples/ipsec-secgw/sa.c b/examples/ipsec-secgw/sa.c
> index 88dd30464f..6679e2a598 100644
> --- a/examples/ipsec-secgw/sa.c
> +++ b/examples/ipsec-secgw/sa.c
> @@ -677,6 +677,16 @@ parse_sa_tokens(char **tokens, uint32_t n_tokens,
> continue;
> }
>
> + if (strcmp(tokens[ti], "mss") == 0) {
> + INCREMENT_TOKEN_INDEX(ti, n_tokens, status);
> + if (status->status < 0)
> + return;
> + rule->mss = atoi(tokens[ti]);
> + if (status->status < 0)
> + return;
> + continue;
> + }
> +
> if (strcmp(tokens[ti], "fallback") == 0) {
> struct rte_ipsec_session *fb;
>
> --
> 2.25.1
