[dpdk-stable] [PATCH v4 1/2] examples/ipsec-secgw: fix 1st packet dropped for inline crypto
Akhil Goyal
akhil.goyal at nxp.com
Tue Apr 23 15:32:07 CEST 2019
Hi Konstantin,
> Hi Akhil,
>
> >
> > > -----Original Message-----
> > > From: Akhil Goyal
> > > Sent: Thursday, April 18, 2019 7:21 PM
> > > To: Bernard Iremonger <bernard.iremonger at intel.com>; dev at dpdk.org;
> > > konstantin.ananyev at intel.com
> > > Cc: stable at dpdk.org
> > > Subject: RE: [PATCH v4 1/2] examples/ipsec-secgw: fix 1st packet dropped
> for
> > > inline crypto
> > >
> > > Hi Bernard,
> > >
> > > > - RTE_LOG_DP(DEBUG, IPSEC, "Create session for SA spi %u on
> cryptodev "
> > > > - "%u qp %u\n", sa->spi,
> > > > - ipsec_ctx->tbl[cdev_id_qp].id,
> > > > - ipsec_ctx->tbl[cdev_id_qp].qp);
> > > > + if ((sa == NULL) || (pool == NULL))
> > > > + return -EINVAL;
> > > >
> > > > - if (sa->type != RTE_SECURITY_ACTION_TYPE_NONE) {
> > > > - struct rte_security_session_conf sess_conf = {
> > > > + struct rte_security_session_conf sess_conf = {
> > > > .action_type = sa->type,
> > > > .protocol = RTE_SECURITY_PROTOCOL_IPSEC,
> > > > {.ipsec = {
> > > > @@ -90,247 +65,340 @@ create_session(struct ipsec_ctx *ipsec_ctx,
> struct
> > > > ipsec_sa *sa)
> > > > } },
> > > > .crypto_xform = sa->xforms,
> > > > .userdata = NULL,
> > > > -
> > > > };
> > > >
> > > > - if (sa->type ==
> > > RTE_SECURITY_ACTION_TYPE_LOOKASIDE_PROTOCOL)
> > > > {
> > > > - struct rte_security_ctx *ctx = (struct rte_security_ctx *)
> > > > - rte_cryptodev_get_sec_ctx(
> > > > - ipsec_ctx->tbl[cdev_id_qp].id);
> > > > -
> > > > - /* Set IPsec parameters in conf */
> > > > - set_ipsec_conf(sa, &(sess_conf.ipsec));
> > > > -
> > > > - sa->sec_session = rte_security_session_create(ctx,
> > > > - &sess_conf, ipsec_ctx->session_pool);
> > > > - if (sa->sec_session == NULL) {
> > > > - RTE_LOG(ERR, IPSEC,
> > > > - "SEC Session init failed: err: %d\n", ret);
> > > > - return -1;
> > > > - }
> > > > - } else if (sa->type ==
> RTE_SECURITY_ACTION_TYPE_INLINE_CRYPTO)
> > > {
> > > > - struct rte_flow_error err;
> > > > - struct rte_security_ctx *ctx = (struct rte_security_ctx *)
> > > > - rte_eth_dev_get_sec_ctx(
> > > > - sa->portid);
> > > > - const struct rte_security_capability *sec_cap;
> > > > - int ret = 0;
> > > > -
> > > > - sa->sec_session = rte_security_session_create(ctx,
> > > > - &sess_conf, ipsec_ctx->session_pool);
> > > > - if (sa->sec_session == NULL) {
> > > > - RTE_LOG(ERR, IPSEC,
> > > > - "SEC Session init failed: err: %d\n", ret);
> > > > - return -1;
> > > > - }
> > > > + if (sa->type ==
> RTE_SECURITY_ACTION_TYPE_LOOKASIDE_PROTOCOL) {
> > > > + ctx = (struct rte_security_ctx *)
> > > > + rte_eth_dev_get_sec_ctx(sa->portid);
> > >
> > > This is breaking the lookaside mode. Ctx was retrieved using the ipsec_ctx-
> >tbl
> > > struct rte_security_ctx *ctx = (struct rte_security_ctx *)
> > > rte_cryptodev_get_sec_ctx(
> > > ipsec_ctx->tbl[cdev_id_qp].id);
> > >
> > > I am looking into it, but I don't have time left to get it integrated in RC2. So
> this
> > > has to be pushed to RC3
> >
> > It looks like there are multiple issues in this patch wrt lookaside and none cases.
> Only the inline cases seem to be working.
> >
> > 1. the patch removes the cdev_mapping concept completely. Cdev_id_qp is
> not getting used.
>
> Not exactly.
> cdev_id_qp is still setup, and is still used to decide to which crypto-dev to
> enqueuer the crypto-op:
> ipsec_enqueue(...)
> {
> ...
> enqueue_cop(&ipsec_ctx->tbl[sa->cdev_id_qp], &priv->cop);
I don't see anybody filling "sa->cdev_id_qp". Please let me know if I have missed it somewhere.
It is memset to 0 I guess.
>
>
> Same in ipsec_process().
>
> For initialization, yes cdev_id_qp is not used anymore.
> As discussed here:
> https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fmails.dp
> dk.org%2Farchives%2Fdev%2F2019-
> March%2F127725.html&data=02%7C01%7Cakhil.goyal%40nxp.com%7C04
> 194193cfc04c0b629008d6c7eea247%7C686ea1d3bc2b4c6fa92cd99c5c301635%
> 7C0%7C0%7C636916225072561313&sdata=ga9IiqhYRWOz9QkRDIXNiigInk
> soVGgu1E5EetqvE%2FA%3D&reserved=0
>
> I think the problem you are hitting with lookaside-proto is that for it
> we use 2 different values here:
> a) In create_sec_session we use portid (it also should be
> rte_cryptodev_get_sec_ctx() here)
> if (sa->type == RTE_SECURITY_ACTION_TYPE_LOOKASIDE_PROTOCOL) {
> ctx = (struct rte_security_ctx *)
> rte_eth_dev_get_sec_ctx(sa->portid);
It should be rte_cryptodev_get_sec_ctx in the first place. And it needs a cdev_id as input based on the cdev mapping done while initializing the cryptodev and neither the portid and nor cdev_id_qp.
> b) in enqueue() we use cdev_id_qp
>
> Right now these values could be different.
> As I understand we need to make sure that fro lookaside-proto cdev_id_qp ==
> portid provided by user, correct?
No it is not the case. Right now for lookaside there is no use of portid in case of lookaside case.
As the cdev/qp/core mappings are managed internally and the user cannot tweak it from cfg file.
>
>
> > The port_id cannot be used in case of crypto, the mapping of cdev/qp/core
> is done differently for inbound and outbound ports which is
> > missed in this patch.
> >
> > 2. crypto sessions are created using the session mempool and the private data
> is allocated using the session priv_mempool which is
> > removed in this patch. This will break cases where the priv data is more than
> the size of sess_mp element size.
> > Also the security sessions need to be allocated using the session_priv_mp
> instead of the session_mp.
> > Please check this one.
> >
> https://eur01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fpatches.d
> pdk.org%2Fpatch%2F52981%2F&data=02%7C01%7Cakhil.goyal%40nxp.co
> m%7C04194193cfc04c0b629008d6c7eea247%7C686ea1d3bc2b4c6fa92cd99c5c
> 301635%7C0%7C0%7C636916225072561313&sdata=libTy%2F%2Bj23gGru
> vxhdlVUGIOeVq%2BlM2PIF1ZsgN%2FaSY%3D&reserved=0
>
> Yes, I think you right, we need to use sess_private_pool here.
>
> >
> > Ideally this issue should be resolved by adding another parameter in
> rte_security_session_create which can take another mempool pointer
> > for private data allocation. But this cannot be done in this release as it would
> need a deprecation notice.
> >
> > With the above issues I don't see your patch going in 19.05 release cycle.
> >
> > Regards,
> > Akhil
> >
> > >
> > >
> > >
> > > >
> > > > - sec_cap = rte_security_capabilities_get(ctx);
> > > > + /* Set IPsec parameters in conf */
> > > > + set_ipsec_conf(sa, &(sess_conf.ipsec));
> > > >
> > > > - /* iterate until ESP tunnel*/
> > > > - while (sec_cap->action !=
> > > > - RTE_SECURITY_ACTION_TYPE_NONE) {
> > > > + sa->sec_session = rte_security_session_create(ctx,
> > > > + &sess_conf, pool);
> > > > + if (sa->sec_session == NULL) {
> > > > + RTE_LOG(ERR, IPSEC,
> > > > + "SEC Session init failed: err: %d\n",
> > > > + ret);
> > > > + return -1;
> > > > + }
More information about the stable
mailing list