numam-dpdk/lib/ipsec/sa.c

765 lines
18 KiB
C
Raw Normal View History

/* SPDX-License-Identifier: BSD-3-Clause
* Copyright(c) 2018-2020 Intel Corporation
*/
#include <rte_ipsec.h>
#include <rte_esp.h>
#include <rte_ip.h>
#include <rte_errno.h>
#include <rte_cryptodev.h>
#include "sa.h"
#include "ipsec_sqn.h"
#include "crypto.h"
#include "iph.h"
#include "misc.h"
#include "pad.h"
#define MBUF_MAX_L2_LEN RTE_LEN2MASK(RTE_MBUF_L2_LEN_BITS, uint64_t)
#define MBUF_MAX_L3_LEN RTE_LEN2MASK(RTE_MBUF_L3_LEN_BITS, uint64_t)
/* some helper structures */
struct crypto_xform {
struct rte_crypto_auth_xform *auth;
struct rte_crypto_cipher_xform *cipher;
struct rte_crypto_aead_xform *aead;
};
/*
* helper routine, fills internal crypto_xform structure.
*/
static int
fill_crypto_xform(struct crypto_xform *xform, uint64_t type,
const struct rte_ipsec_sa_prm *prm)
{
struct rte_crypto_sym_xform *xf, *xfn;
memset(xform, 0, sizeof(*xform));
xf = prm->crypto_xform;
if (xf == NULL)
return -EINVAL;
xfn = xf->next;
/* for AEAD just one xform required */
if (xf->type == RTE_CRYPTO_SYM_XFORM_AEAD) {
if (xfn != NULL)
return -EINVAL;
xform->aead = &xf->aead;
/*
* CIPHER+AUTH xforms are expected in strict order,
* depending on SA direction:
* inbound: AUTH+CIPHER
* outbound: CIPHER+AUTH
*/
} else if ((type & RTE_IPSEC_SATP_DIR_MASK) == RTE_IPSEC_SATP_DIR_IB) {
/* wrong order or no cipher */
if (xfn == NULL || xf->type != RTE_CRYPTO_SYM_XFORM_AUTH ||
xfn->type != RTE_CRYPTO_SYM_XFORM_CIPHER)
return -EINVAL;
xform->auth = &xf->auth;
xform->cipher = &xfn->cipher;
} else {
/* wrong order or no auth */
if (xfn == NULL || xf->type != RTE_CRYPTO_SYM_XFORM_CIPHER ||
xfn->type != RTE_CRYPTO_SYM_XFORM_AUTH)
return -EINVAL;
xform->cipher = &xf->cipher;
xform->auth = &xfn->auth;
}
return 0;
}
uint64_t
rte_ipsec_sa_type(const struct rte_ipsec_sa *sa)
{
return sa->type;
}
/**
* Based on number of buckets calculated required size for the
* structure that holds replay window and sequence number (RSN) information.
*/
static size_t
rsn_size(uint32_t nb_bucket)
{
size_t sz;
struct replay_sqn *rsn;
sz = sizeof(*rsn) + nb_bucket * sizeof(rsn->window[0]);
sz = RTE_ALIGN_CEIL(sz, RTE_CACHE_LINE_SIZE);
return sz;
}
/*
* for given size, calculate required number of buckets.
*/
static uint32_t
replay_num_bucket(uint32_t wsz)
{
uint32_t nb;
nb = rte_align32pow2(RTE_ALIGN_MUL_CEIL(wsz, WINDOW_BUCKET_SIZE) /
WINDOW_BUCKET_SIZE);
nb = RTE_MAX(nb, (uint32_t)WINDOW_BUCKET_MIN);
return nb;
}
static int32_t
ipsec_sa_size(uint64_t type, uint32_t *wnd_sz, uint32_t *nb_bucket)
{
uint32_t n, sz, wsz;
wsz = *wnd_sz;
n = 0;
if ((type & RTE_IPSEC_SATP_DIR_MASK) == RTE_IPSEC_SATP_DIR_IB) {
/*
* RFC 4303 recommends 64 as minimum window size.
* there is no point to use ESN mode without SQN window,
* so make sure we have at least 64 window when ESN is enalbed.
*/
wsz = ((type & RTE_IPSEC_SATP_ESN_MASK) ==
RTE_IPSEC_SATP_ESN_DISABLE) ?
wsz : RTE_MAX(wsz, (uint32_t)WINDOW_BUCKET_SIZE);
if (wsz != 0)
n = replay_num_bucket(wsz);
}
if (n > WINDOW_BUCKET_MAX)
return -EINVAL;
*wnd_sz = wsz;
*nb_bucket = n;
sz = rsn_size(n);
if ((type & RTE_IPSEC_SATP_SQN_MASK) == RTE_IPSEC_SATP_SQN_ATOM)
sz *= REPLAY_SQN_NUM;
sz += sizeof(struct rte_ipsec_sa);
return sz;
}
void
rte_ipsec_sa_fini(struct rte_ipsec_sa *sa)
{
memset(sa, 0, sa->size);
}
/*
* Determine expected SA type based on input parameters.
*/
static int
fill_sa_type(const struct rte_ipsec_sa_prm *prm, uint64_t *type)
{
uint64_t tp;
tp = 0;
if (prm->ipsec_xform.proto == RTE_SECURITY_IPSEC_SA_PROTO_AH)
tp |= RTE_IPSEC_SATP_PROTO_AH;
else if (prm->ipsec_xform.proto == RTE_SECURITY_IPSEC_SA_PROTO_ESP)
tp |= RTE_IPSEC_SATP_PROTO_ESP;
else
return -EINVAL;
if (prm->ipsec_xform.direction == RTE_SECURITY_IPSEC_SA_DIR_EGRESS)
tp |= RTE_IPSEC_SATP_DIR_OB;
else if (prm->ipsec_xform.direction ==
RTE_SECURITY_IPSEC_SA_DIR_INGRESS)
tp |= RTE_IPSEC_SATP_DIR_IB;
else
return -EINVAL;
if (prm->ipsec_xform.mode == RTE_SECURITY_IPSEC_SA_MODE_TUNNEL) {
if (prm->ipsec_xform.tunnel.type ==
RTE_SECURITY_IPSEC_TUNNEL_IPV4)
tp |= RTE_IPSEC_SATP_MODE_TUNLV4;
else if (prm->ipsec_xform.tunnel.type ==
RTE_SECURITY_IPSEC_TUNNEL_IPV6)
tp |= RTE_IPSEC_SATP_MODE_TUNLV6;
else
return -EINVAL;
if (prm->tun.next_proto == IPPROTO_IPIP)
tp |= RTE_IPSEC_SATP_IPV4;
else if (prm->tun.next_proto == IPPROTO_IPV6)
tp |= RTE_IPSEC_SATP_IPV6;
else
return -EINVAL;
} else if (prm->ipsec_xform.mode ==
RTE_SECURITY_IPSEC_SA_MODE_TRANSPORT) {
tp |= RTE_IPSEC_SATP_MODE_TRANS;
if (prm->trs.proto == IPPROTO_IPIP)
tp |= RTE_IPSEC_SATP_IPV4;
else if (prm->trs.proto == IPPROTO_IPV6)
tp |= RTE_IPSEC_SATP_IPV6;
else
return -EINVAL;
} else
return -EINVAL;
/* check for ESN flag */
if (prm->ipsec_xform.options.esn == 0)
tp |= RTE_IPSEC_SATP_ESN_DISABLE;
else
tp |= RTE_IPSEC_SATP_ESN_ENABLE;
/* check for ECN flag */
if (prm->ipsec_xform.options.ecn == 0)
tp |= RTE_IPSEC_SATP_ECN_DISABLE;
else
tp |= RTE_IPSEC_SATP_ECN_ENABLE;
/* check for DSCP flag */
if (prm->ipsec_xform.options.copy_dscp == 0)
tp |= RTE_IPSEC_SATP_DSCP_DISABLE;
else
tp |= RTE_IPSEC_SATP_DSCP_ENABLE;
/* interpret flags */
if (prm->flags & RTE_IPSEC_SAFLAG_SQN_ATOM)
tp |= RTE_IPSEC_SATP_SQN_ATOM;
else
tp |= RTE_IPSEC_SATP_SQN_RAW;
*type = tp;
return 0;
}
/*
* Init ESP inbound specific things.
*/
static void
esp_inb_init(struct rte_ipsec_sa *sa)
{
/* these params may differ with new algorithms support */
sa->ctp.cipher.offset = sizeof(struct rte_esp_hdr) + sa->iv_len;
sa->ctp.cipher.length = sa->icv_len + sa->ctp.cipher.offset;
/*
* for AEAD and NULL algorithms we can assume that
* auth and cipher offsets would be equal.
*/
switch (sa->algo_type) {
case ALGO_TYPE_AES_GCM:
case ALGO_TYPE_NULL:
sa->ctp.auth.raw = sa->ctp.cipher.raw;
break;
default:
sa->ctp.auth.offset = 0;
sa->ctp.auth.length = sa->icv_len - sa->sqh_len;
sa->cofs.ofs.cipher.tail = sa->sqh_len;
break;
}
sa->cofs.ofs.cipher.head = sa->ctp.cipher.offset - sa->ctp.auth.offset;
}
/*
* Init ESP inbound tunnel specific things.
*/
static void
esp_inb_tun_init(struct rte_ipsec_sa *sa, const struct rte_ipsec_sa_prm *prm)
{
sa->proto = prm->tun.next_proto;
esp_inb_init(sa);
}
/*
* Init ESP outbound specific things.
*/
static void
esp_outb_init(struct rte_ipsec_sa *sa, uint32_t hlen)
{
uint8_t algo_type;
sa->sqn.outb = 1;
algo_type = sa->algo_type;
/*
* Setup auth and cipher length and offset.
* these params may differ with new algorithms support
*/
switch (algo_type) {
case ALGO_TYPE_AES_GCM:
case ALGO_TYPE_AES_CTR:
case ALGO_TYPE_NULL:
sa->ctp.cipher.offset = hlen + sizeof(struct rte_esp_hdr) +
sa->iv_len;
sa->ctp.cipher.length = 0;
break;
case ALGO_TYPE_AES_CBC:
case ALGO_TYPE_3DES_CBC:
sa->ctp.cipher.offset = hlen + sizeof(struct rte_esp_hdr);
sa->ctp.cipher.length = sa->iv_len;
break;
}
/*
* for AEAD and NULL algorithms we can assume that
* auth and cipher offsets would be equal.
*/
switch (algo_type) {
case ALGO_TYPE_AES_GCM:
case ALGO_TYPE_NULL:
sa->ctp.auth.raw = sa->ctp.cipher.raw;
break;
default:
sa->ctp.auth.offset = hlen;
sa->ctp.auth.length = sizeof(struct rte_esp_hdr) +
sa->iv_len + sa->sqh_len;
break;
}
sa->cofs.ofs.cipher.head = sa->ctp.cipher.offset - sa->ctp.auth.offset;
sa->cofs.ofs.cipher.tail = (sa->ctp.auth.offset + sa->ctp.auth.length) -
(sa->ctp.cipher.offset + sa->ctp.cipher.length);
}
/*
* Init ESP outbound tunnel specific things.
*/
static void
esp_outb_tun_init(struct rte_ipsec_sa *sa, const struct rte_ipsec_sa_prm *prm)
{
sa->proto = prm->tun.next_proto;
sa->hdr_len = prm->tun.hdr_len;
sa->hdr_l3_off = prm->tun.hdr_l3_off;
/* update l2_len and l3_len fields for outbound mbuf */
sa->tx_offload.val = rte_mbuf_tx_offload(sa->hdr_l3_off,
sa->hdr_len - sa->hdr_l3_off, 0, 0, 0, 0, 0);
memcpy(sa->hdr, prm->tun.hdr, sa->hdr_len);
esp_outb_init(sa, sa->hdr_len);
}
/*
* helper function, init SA structure.
*/
static int
esp_sa_init(struct rte_ipsec_sa *sa, const struct rte_ipsec_sa_prm *prm,
const struct crypto_xform *cxf)
{
static const uint64_t msk = RTE_IPSEC_SATP_DIR_MASK |
RTE_IPSEC_SATP_MODE_MASK;
if (prm->ipsec_xform.options.ecn)
sa->tos_mask |= RTE_IPV4_HDR_ECN_MASK;
if (prm->ipsec_xform.options.copy_dscp)
sa->tos_mask |= RTE_IPV4_HDR_DSCP_MASK;
if (cxf->aead != NULL) {
switch (cxf->aead->algo) {
case RTE_CRYPTO_AEAD_AES_GCM:
/* RFC 4106 */
sa->aad_len = sizeof(struct aead_gcm_aad);
sa->icv_len = cxf->aead->digest_length;
sa->iv_ofs = cxf->aead->iv.offset;
sa->iv_len = sizeof(uint64_t);
sa->pad_align = IPSEC_PAD_AES_GCM;
sa->algo_type = ALGO_TYPE_AES_GCM;
break;
default:
return -EINVAL;
}
} else {
sa->icv_len = cxf->auth->digest_length;
sa->iv_ofs = cxf->cipher->iv.offset;
sa->sqh_len = IS_ESN(sa) ? sizeof(uint32_t) : 0;
switch (cxf->cipher->algo) {
case RTE_CRYPTO_CIPHER_NULL:
sa->pad_align = IPSEC_PAD_NULL;
sa->iv_len = 0;
sa->algo_type = ALGO_TYPE_NULL;
break;
case RTE_CRYPTO_CIPHER_AES_CBC:
sa->pad_align = IPSEC_PAD_AES_CBC;
sa->iv_len = IPSEC_MAX_IV_SIZE;
sa->algo_type = ALGO_TYPE_AES_CBC;
break;
case RTE_CRYPTO_CIPHER_AES_CTR:
/* RFC 3686 */
sa->pad_align = IPSEC_PAD_AES_CTR;
sa->iv_len = IPSEC_AES_CTR_IV_SIZE;
sa->algo_type = ALGO_TYPE_AES_CTR;
break;
case RTE_CRYPTO_CIPHER_3DES_CBC:
/* RFC 1851 */
sa->pad_align = IPSEC_PAD_3DES_CBC;
sa->iv_len = IPSEC_3DES_IV_SIZE;
sa->algo_type = ALGO_TYPE_3DES_CBC;
break;
default:
return -EINVAL;
}
}
sa->udata = prm->userdata;
sa->spi = rte_cpu_to_be_32(prm->ipsec_xform.spi);
sa->salt = prm->ipsec_xform.salt;
/* preserve all values except l2_len and l3_len */
sa->tx_offload.msk =
~rte_mbuf_tx_offload(MBUF_MAX_L2_LEN, MBUF_MAX_L3_LEN,
0, 0, 0, 0, 0);
switch (sa->type & msk) {
case (RTE_IPSEC_SATP_DIR_IB | RTE_IPSEC_SATP_MODE_TUNLV4):
case (RTE_IPSEC_SATP_DIR_IB | RTE_IPSEC_SATP_MODE_TUNLV6):
esp_inb_tun_init(sa, prm);
break;
case (RTE_IPSEC_SATP_DIR_IB | RTE_IPSEC_SATP_MODE_TRANS):
esp_inb_init(sa);
break;
case (RTE_IPSEC_SATP_DIR_OB | RTE_IPSEC_SATP_MODE_TUNLV4):
case (RTE_IPSEC_SATP_DIR_OB | RTE_IPSEC_SATP_MODE_TUNLV6):
esp_outb_tun_init(sa, prm);
break;
case (RTE_IPSEC_SATP_DIR_OB | RTE_IPSEC_SATP_MODE_TRANS):
esp_outb_init(sa, 0);
break;
}
return 0;
}
/*
* helper function, init SA replay structure.
*/
static void
fill_sa_replay(struct rte_ipsec_sa *sa, uint32_t wnd_sz, uint32_t nb_bucket)
{
sa->replay.win_sz = wnd_sz;
sa->replay.nb_bucket = nb_bucket;
sa->replay.bucket_index_mask = nb_bucket - 1;
sa->sqn.inb.rsn[0] = (struct replay_sqn *)(sa + 1);
if ((sa->type & RTE_IPSEC_SATP_SQN_MASK) == RTE_IPSEC_SATP_SQN_ATOM)
sa->sqn.inb.rsn[1] = (struct replay_sqn *)
((uintptr_t)sa->sqn.inb.rsn[0] + rsn_size(nb_bucket));
}
int
rte_ipsec_sa_size(const struct rte_ipsec_sa_prm *prm)
{
uint64_t type;
uint32_t nb, wsz;
int32_t rc;
if (prm == NULL)
return -EINVAL;
/* determine SA type */
rc = fill_sa_type(prm, &type);
if (rc != 0)
return rc;
/* determine required size */
wsz = prm->ipsec_xform.replay_win_sz;
return ipsec_sa_size(type, &wsz, &nb);
}
int
rte_ipsec_sa_init(struct rte_ipsec_sa *sa, const struct rte_ipsec_sa_prm *prm,
uint32_t size)
{
int32_t rc, sz;
uint32_t nb, wsz;
uint64_t type;
struct crypto_xform cxf;
if (sa == NULL || prm == NULL)
return -EINVAL;
/* determine SA type */
rc = fill_sa_type(prm, &type);
if (rc != 0)
return rc;
/* determine required size */
wsz = prm->ipsec_xform.replay_win_sz;
sz = ipsec_sa_size(type, &wsz, &nb);
if (sz < 0)
return sz;
else if (size < (uint32_t)sz)
return -ENOSPC;
/* only esp is supported right now */
if (prm->ipsec_xform.proto != RTE_SECURITY_IPSEC_SA_PROTO_ESP)
return -EINVAL;
if (prm->ipsec_xform.mode == RTE_SECURITY_IPSEC_SA_MODE_TUNNEL &&
prm->tun.hdr_len > sizeof(sa->hdr))
return -EINVAL;
rc = fill_crypto_xform(&cxf, type, prm);
if (rc != 0)
return rc;
/* initialize SA */
memset(sa, 0, sz);
sa->type = type;
sa->size = sz;
/* check for ESN flag */
sa->sqn_mask = (prm->ipsec_xform.options.esn == 0) ?
UINT32_MAX : UINT64_MAX;
rc = esp_sa_init(sa, prm, &cxf);
if (rc != 0)
rte_ipsec_sa_fini(sa);
/* fill replay window related fields */
if (nb != 0)
fill_sa_replay(sa, wsz, nb);
return sz;
}
/*
* setup crypto ops for LOOKASIDE_PROTO type of devices.
*/
static inline void
lksd_proto_cop_prepare(const struct rte_ipsec_session *ss,
struct rte_mbuf *mb[], struct rte_crypto_op *cop[], uint16_t num)
{
uint32_t i;
struct rte_crypto_sym_op *sop;
for (i = 0; i != num; i++) {
sop = cop[i]->sym;
cop[i]->type = RTE_CRYPTO_OP_TYPE_SYMMETRIC;
cop[i]->status = RTE_CRYPTO_OP_STATUS_NOT_PROCESSED;
cop[i]->sess_type = RTE_CRYPTO_OP_SECURITY_SESSION;
sop->m_src = mb[i];
__rte_security_attach_session(sop, ss->security.ses);
}
}
/*
* setup packets and crypto ops for LOOKASIDE_PROTO type of devices.
* Note that for LOOKASIDE_PROTO all packet modifications will be
* performed by PMD/HW.
* SW has only to prepare crypto op.
*/
static uint16_t
lksd_proto_prepare(const struct rte_ipsec_session *ss,
struct rte_mbuf *mb[], struct rte_crypto_op *cop[], uint16_t num)
{
lksd_proto_cop_prepare(ss, mb, cop, num);
return num;
}
/*
* simplest pkt process routine:
* all actual processing is already done by HW/PMD,
* just check mbuf ol_flags.
* used for:
* - inbound for RTE_SECURITY_ACTION_TYPE_INLINE_PROTOCOL
* - inbound/outbound for RTE_SECURITY_ACTION_TYPE_LOOKASIDE_PROTOCOL
* - outbound for RTE_SECURITY_ACTION_TYPE_NONE when ESN is disabled
*/
uint16_t
pkt_flag_process(const struct rte_ipsec_session *ss,
struct rte_mbuf *mb[], uint16_t num)
{
uint32_t i, k;
uint32_t dr[num];
RTE_SET_USED(ss);
k = 0;
for (i = 0; i != num; i++) {
if ((mb[i]->ol_flags & PKT_RX_SEC_OFFLOAD_FAILED) == 0)
k++;
else
dr[i - k] = i;
}
/* handle unprocessed mbufs */
if (k != num) {
rte_errno = EBADMSG;
if (k != 0)
move_bad_mbufs(mb, dr, num, num - k);
}
return k;
}
/*
* Select packet processing function for session on LOOKASIDE_NONE
* type of device.
*/
static int
lksd_none_pkt_func_select(const struct rte_ipsec_sa *sa,
struct rte_ipsec_sa_pkt_func *pf)
{
int32_t rc;
static const uint64_t msk = RTE_IPSEC_SATP_DIR_MASK |
RTE_IPSEC_SATP_MODE_MASK;
rc = 0;
switch (sa->type & msk) {
case (RTE_IPSEC_SATP_DIR_IB | RTE_IPSEC_SATP_MODE_TUNLV4):
case (RTE_IPSEC_SATP_DIR_IB | RTE_IPSEC_SATP_MODE_TUNLV6):
pf->prepare.async = esp_inb_pkt_prepare;
pf->process = esp_inb_tun_pkt_process;
break;
case (RTE_IPSEC_SATP_DIR_IB | RTE_IPSEC_SATP_MODE_TRANS):
pf->prepare.async = esp_inb_pkt_prepare;
pf->process = esp_inb_trs_pkt_process;
break;
case (RTE_IPSEC_SATP_DIR_OB | RTE_IPSEC_SATP_MODE_TUNLV4):
case (RTE_IPSEC_SATP_DIR_OB | RTE_IPSEC_SATP_MODE_TUNLV6):
pf->prepare.async = esp_outb_tun_prepare;
pf->process = (sa->sqh_len != 0) ?
esp_outb_sqh_process : pkt_flag_process;
break;
case (RTE_IPSEC_SATP_DIR_OB | RTE_IPSEC_SATP_MODE_TRANS):
pf->prepare.async = esp_outb_trs_prepare;
pf->process = (sa->sqh_len != 0) ?
esp_outb_sqh_process : pkt_flag_process;
break;
default:
rc = -ENOTSUP;
}
return rc;
}
static int
cpu_crypto_pkt_func_select(const struct rte_ipsec_sa *sa,
struct rte_ipsec_sa_pkt_func *pf)
{
int32_t rc;
static const uint64_t msk = RTE_IPSEC_SATP_DIR_MASK |
RTE_IPSEC_SATP_MODE_MASK;
rc = 0;
switch (sa->type & msk) {
case (RTE_IPSEC_SATP_DIR_IB | RTE_IPSEC_SATP_MODE_TUNLV4):
case (RTE_IPSEC_SATP_DIR_IB | RTE_IPSEC_SATP_MODE_TUNLV6):
pf->prepare.sync = cpu_inb_pkt_prepare;
pf->process = esp_inb_tun_pkt_process;
break;
case (RTE_IPSEC_SATP_DIR_IB | RTE_IPSEC_SATP_MODE_TRANS):
pf->prepare.sync = cpu_inb_pkt_prepare;
pf->process = esp_inb_trs_pkt_process;
break;
case (RTE_IPSEC_SATP_DIR_OB | RTE_IPSEC_SATP_MODE_TUNLV4):
case (RTE_IPSEC_SATP_DIR_OB | RTE_IPSEC_SATP_MODE_TUNLV6):
pf->prepare.sync = cpu_outb_tun_pkt_prepare;
pf->process = (sa->sqh_len != 0) ?
esp_outb_sqh_process : pkt_flag_process;
break;
case (RTE_IPSEC_SATP_DIR_OB | RTE_IPSEC_SATP_MODE_TRANS):
pf->prepare.sync = cpu_outb_trs_pkt_prepare;
pf->process = (sa->sqh_len != 0) ?
esp_outb_sqh_process : pkt_flag_process;
break;
default:
rc = -ENOTSUP;
}
return rc;
}
/*
* Select packet processing function for session on INLINE_CRYPTO
* type of device.
*/
static int
inline_crypto_pkt_func_select(const struct rte_ipsec_sa *sa,
struct rte_ipsec_sa_pkt_func *pf)
{
int32_t rc;
static const uint64_t msk = RTE_IPSEC_SATP_DIR_MASK |
RTE_IPSEC_SATP_MODE_MASK;
rc = 0;
switch (sa->type & msk) {
case (RTE_IPSEC_SATP_DIR_IB | RTE_IPSEC_SATP_MODE_TUNLV4):
case (RTE_IPSEC_SATP_DIR_IB | RTE_IPSEC_SATP_MODE_TUNLV6):
pf->process = inline_inb_tun_pkt_process;
break;
case (RTE_IPSEC_SATP_DIR_IB | RTE_IPSEC_SATP_MODE_TRANS):
pf->process = inline_inb_trs_pkt_process;
break;
case (RTE_IPSEC_SATP_DIR_OB | RTE_IPSEC_SATP_MODE_TUNLV4):
case (RTE_IPSEC_SATP_DIR_OB | RTE_IPSEC_SATP_MODE_TUNLV6):
pf->process = inline_outb_tun_pkt_process;
break;
case (RTE_IPSEC_SATP_DIR_OB | RTE_IPSEC_SATP_MODE_TRANS):
pf->process = inline_outb_trs_pkt_process;
break;
default:
rc = -ENOTSUP;
}
return rc;
}
/*
* Select packet processing function for given session based on SA parameters
* and type of associated with the session device.
*/
int
ipsec_sa_pkt_func_select(const struct rte_ipsec_session *ss,
const struct rte_ipsec_sa *sa, struct rte_ipsec_sa_pkt_func *pf)
{
int32_t rc;
rc = 0;
pf[0] = (struct rte_ipsec_sa_pkt_func) { {NULL}, NULL };
switch (ss->type) {
case RTE_SECURITY_ACTION_TYPE_NONE:
rc = lksd_none_pkt_func_select(sa, pf);
break;
case RTE_SECURITY_ACTION_TYPE_INLINE_CRYPTO:
rc = inline_crypto_pkt_func_select(sa, pf);
break;
case RTE_SECURITY_ACTION_TYPE_INLINE_PROTOCOL:
if ((sa->type & RTE_IPSEC_SATP_DIR_MASK) ==
RTE_IPSEC_SATP_DIR_IB)
pf->process = pkt_flag_process;
else
pf->process = inline_proto_outb_pkt_process;
break;
case RTE_SECURITY_ACTION_TYPE_LOOKASIDE_PROTOCOL:
pf->prepare.async = lksd_proto_prepare;
pf->process = pkt_flag_process;
break;
case RTE_SECURITY_ACTION_TYPE_CPU_CRYPTO:
rc = cpu_crypto_pkt_func_select(sa, pf);
break;
default:
rc = -ENOTSUP;
}
return rc;
}