Add routines to perform pre & post processing based on the type of
entity. To avoid checks in datapath, there are different function
pointers registered based on the following,
1. Control plane v/s user plane
2. 12 bit v/s 18 bit SN
For control plane only 12 bit SN need to be supported (as per PDCP
specification).
Signed-off-by: Anoob Joseph <ano...@marvell.com>
Signed-off-by: Kiran Kumar K <kirankum...@marvell.com>
Signed-off-by: Volodymyr Fialko <vfia...@marvell.com>
Acked-by: Akhil Goyal <gak...@marvell.com>
---
lib/pdcp/pdcp_entity.h | 24 +++
lib/pdcp/pdcp_process.c | 334 ++++++++++++++++++++++++++++++++++++++++
2 files changed, 358 insertions(+)
diff --git a/lib/pdcp/pdcp_entity.h b/lib/pdcp/pdcp_entity.h
index 000297588f..23628ebad4 100644
--- a/lib/pdcp/pdcp_entity.h
+++ b/lib/pdcp/pdcp_entity.h
@@ -92,22 +92,46 @@ pdcp_hdr_size_get(enum rte_security_pdcp_sn_size sn_size)
return RTE_ALIGN_MUL_CEIL(sn_size, 8) / 8;
}
+static inline uint32_t
+pdcp_window_size_get(enum rte_security_pdcp_sn_size sn_size)
+{
+ return 1 << (sn_size - 1);
+}
+
static inline uint32_t
pdcp_sn_mask_get(enum rte_security_pdcp_sn_size sn_size)
{
return (1 << sn_size) - 1;
}
+static inline uint32_t
+pdcp_sn_from_count_get(uint32_t count, enum rte_security_pdcp_sn_size sn_size)
+{
+ return (count & pdcp_sn_mask_get(sn_size));
+}
+
static inline uint32_t
pdcp_hfn_mask_get(enum rte_security_pdcp_sn_size sn_size)
{
return ~pdcp_sn_mask_get(sn_size);
}
+static inline uint32_t
+pdcp_hfn_from_count_get(uint32_t count, enum rte_security_pdcp_sn_size sn_size)
+{
+ return (count & pdcp_hfn_mask_get(sn_size)) >> sn_size;
+}
+
static inline uint32_t
pdcp_count_from_hfn_sn_get(uint32_t hfn, uint32_t sn, enum
rte_security_pdcp_sn_size sn_size)
{
return (((hfn << sn_size) & pdcp_hfn_mask_get(sn_size)) | (sn &
pdcp_sn_mask_get(sn_size)));
}
+static inline uint32_t
+pdcp_hfn_max(enum rte_security_pdcp_sn_size sn_size)
+{
+ return (1 << (32 - sn_size)) - 1;
+}
+
#endif /* PDCP_ENTITY_H */
diff --git a/lib/pdcp/pdcp_process.c b/lib/pdcp/pdcp_process.c
index 79f5dce5db..9b7de39db6 100644
--- a/lib/pdcp/pdcp_process.c
+++ b/lib/pdcp/pdcp_process.c
@@ -36,6 +36,336 @@ pdcp_crypto_xfrm_get(const struct rte_pdcp_entity_conf
*conf, struct rte_crypto_
return 0;
}
+static inline void
+cop_prepare(const struct entity_priv *en_priv, struct rte_mbuf *mb, struct
rte_crypto_op *cop,
+ uint8_t data_offset, uint32_t count, const bool is_auth)
+{
+ const struct rte_crypto_op cop_init = {
+ .type = RTE_CRYPTO_OP_TYPE_SYMMETRIC,
+ .status = RTE_CRYPTO_OP_STATUS_NOT_PROCESSED,
+ .sess_type = RTE_CRYPTO_OP_WITH_SESSION,
+ };
+ struct rte_crypto_sym_op *op;
+ uint32_t pkt_len;
+
+ const uint8_t cipher_shift = 3 * en_priv->flags.is_cipher_in_bits;
+ const uint8_t auth_shift = 3 * en_priv->flags.is_auth_in_bits;
+
+ op = cop->sym;
+ cop->raw = cop_init.raw;
+ op->m_src = mb;
+ op->m_dst = mb;
+
+ /* Set IV */
+ en_priv->iv_gen(cop, en_priv, count);
+
+ /* Prepare op */
+ pkt_len = rte_pktmbuf_pkt_len(mb);
+ op->cipher.data.offset = data_offset << cipher_shift;
+ op->cipher.data.length = (pkt_len - data_offset) << cipher_shift;
+
+ if (is_auth) {
+ op->auth.data.offset = 0;
+ op->auth.data.length = (pkt_len - RTE_PDCP_MAC_I_LEN) <<
auth_shift;
+ op->auth.digest.data = rte_pktmbuf_mtod_offset(mb, uint8_t *,
+ (pkt_len -
RTE_PDCP_MAC_I_LEN));
+ }
+
+ __rte_crypto_sym_op_attach_sym_session(op, en_priv->crypto_sess);
+}
+
+static inline bool
+pdcp_pre_process_uplane_sn_12_ul_set_sn(struct entity_priv *en_priv, struct
rte_mbuf *mb,
+ uint32_t *count)
+{
+ struct rte_pdcp_up_data_pdu_sn_12_hdr *pdu_hdr;
+ const uint8_t hdr_sz = en_priv->hdr_sz;
+ uint32_t sn;
+
+ /* Prepend PDU header */
+ pdu_hdr = (struct rte_pdcp_up_data_pdu_sn_12_hdr
*)rte_pktmbuf_prepend(mb, hdr_sz);
+ if (unlikely(pdu_hdr == NULL))
+ return false;
+
+ /* Update sequence num in the PDU header */
+ *count = en_priv->state.tx_next++;
+ sn = pdcp_sn_from_count_get(*count, RTE_SECURITY_PDCP_SN_SIZE_12);
+
+ pdu_hdr->d_c = RTE_PDCP_PDU_TYPE_DATA;
+ pdu_hdr->sn_11_8 = ((sn & 0xf00) >> 8);
+ pdu_hdr->sn_7_0 = (sn & 0xff);
+ pdu_hdr->r = 0;
+ return true;
+}
+
+static uint16_t
+pdcp_pre_process_uplane_sn_12_ul(const struct rte_pdcp_entity *entity, struct
rte_mbuf *in_mb[],
+ struct rte_crypto_op *cop[], uint16_t num,
uint16_t *nb_err_ret)
+{
+ struct entity_priv *en_priv = entity_priv_get(entity);
+ uint16_t nb_cop, nb_prep = 0, nb_err = 0;
+ struct rte_mbuf *mb;
+ uint32_t count;
+ uint8_t *mac_i;
+ int i;
+
+ const uint8_t data_offset = en_priv->hdr_sz + en_priv->aad_sz;
+ const int is_null_auth = en_priv->flags.is_null_auth;
+
+ nb_cop = rte_crypto_op_bulk_alloc(en_priv->cop_pool,
RTE_CRYPTO_OP_TYPE_SYMMETRIC, cop,
+ num);
+
+ if (en_priv->flags.is_authenticated) {
+ for (i = 0; i < nb_cop; i++) {
+ mb = in_mb[i];
+ mac_i = (uint8_t *)rte_pktmbuf_append(mb,
RTE_PDCP_MAC_I_LEN);
+ if (unlikely(mac_i == NULL)) {
+ in_mb[nb_err++] = mb;
+ continue;
+ }
+
+ /* Clear MAC-I field for NULL auth */
+ if (is_null_auth)
+ memset(mac_i, 0, RTE_PDCP_MAC_I_LEN);
+
+ if
(unlikely(!pdcp_pre_process_uplane_sn_12_ul_set_sn(en_priv, mb,
+
&count))) {
+ in_mb[nb_err++] = mb;
+ continue;
+ }
+
+ cop_prepare(en_priv, mb, cop[nb_prep++], data_offset,
count, true);
+ }
+ } else {
+ for (i = 0; i < nb_cop; i++) {
+ mb = in_mb[i];
+ if
(unlikely(!pdcp_pre_process_uplane_sn_12_ul_set_sn(en_priv, mb,
+
&count))) {
+ in_mb[nb_err++] = mb;
+ continue;
+ }
+
+ cop_prepare(en_priv, mb, cop[nb_prep++], data_offset,
count, false);
+ }
+ }
+
+ if (unlikely(nb_err))
+ /* Using mempool API since crypto API is not providing bulk
free */
+ rte_mempool_put_bulk(en_priv->cop_pool, (void *)&cop[nb_prep],
nb_cop - nb_prep);
+
+ *nb_err_ret = num - nb_prep;
+
+ return nb_prep;
+}
+
+static inline bool
+pdcp_pre_process_uplane_sn_18_ul_set_sn(struct entity_priv *en_priv, struct
rte_mbuf *mb,
+ uint32_t *count)
+{
+ struct rte_pdcp_up_data_pdu_sn_18_hdr *pdu_hdr;
+ const uint8_t hdr_sz = en_priv->hdr_sz;
+ uint32_t sn;
+
+ /* Prepend PDU header */
+ pdu_hdr = (struct rte_pdcp_up_data_pdu_sn_18_hdr
*)rte_pktmbuf_prepend(mb, hdr_sz);
+ if (unlikely(pdu_hdr == NULL))
+ return false;
+
+ /* Update sequence num in the PDU header */
+ *count = en_priv->state.tx_next++;
+ sn = pdcp_sn_from_count_get(*count, RTE_SECURITY_PDCP_SN_SIZE_18);
+
+ pdu_hdr->d_c = RTE_PDCP_PDU_TYPE_DATA;
+ pdu_hdr->sn_17_16 = ((sn & 0x30000) >> 16);
+ pdu_hdr->sn_15_8 = ((sn & 0xff00) >> 8);
+ pdu_hdr->sn_7_0 = (sn & 0xff);
+ pdu_hdr->r = 0;
+
+ return true;
+}
+
+static inline uint16_t
+pdcp_pre_process_uplane_sn_18_ul(const struct rte_pdcp_entity *entity, struct
rte_mbuf *in_mb[],
+ struct rte_crypto_op *cop[], uint16_t num,
uint16_t *nb_err_ret)
+{
+ struct entity_priv *en_priv = entity_priv_get(entity);
+ uint16_t nb_cop, nb_prep = 0, nb_err = 0;
+ struct rte_mbuf *mb;
+ uint32_t count;
+ uint8_t *mac_i;
+ int i;
+
+ const uint8_t data_offset = en_priv->hdr_sz + en_priv->aad_sz;
+ const int is_null_auth = en_priv->flags.is_null_auth;
+
+ nb_cop = rte_crypto_op_bulk_alloc(en_priv->cop_pool,
RTE_CRYPTO_OP_TYPE_SYMMETRIC, cop,
+ num);
+
+ if (en_priv->flags.is_authenticated) {
+ for (i = 0; i < nb_cop; i++) {
+ mb = in_mb[i];
+ mac_i = (uint8_t *)rte_pktmbuf_append(mb,
RTE_PDCP_MAC_I_LEN);
+ if (unlikely(mac_i == NULL)) {
+ in_mb[nb_err++] = mb;
+ continue;
+ }
+
+ /* Clear MAC-I field for NULL auth */
+ if (is_null_auth)
+ memset(mac_i, 0, RTE_PDCP_MAC_I_LEN);
+
+ if
(unlikely(!pdcp_pre_process_uplane_sn_18_ul_set_sn(en_priv, mb,
+
&count))) {
+ in_mb[nb_err++] = mb;
+ continue;
+ }
+
+ cop_prepare(en_priv, mb, cop[nb_prep++], data_offset,
count, true);
+ }
+ } else {
+ for (i = 0; i < nb_cop; i++) {
+ mb = in_mb[i];
+ if
(unlikely(!pdcp_pre_process_uplane_sn_18_ul_set_sn(en_priv, mb,
+
&count))) {
+
+ in_mb[nb_err++] = mb;
+ continue;
+ }
+
+ cop_prepare(en_priv, mb, cop[nb_prep++], data_offset,
count, false);
+ }
+ }
+
+ if (unlikely(nb_err))
+ /* Using mempool API since crypto API is not providing bulk
free */
+ rte_mempool_put_bulk(en_priv->cop_pool, (void *)&cop[nb_prep],
nb_cop - nb_prep);
+
+ *nb_err_ret = num - nb_prep;
+
+ return nb_prep;
+}
+
+static uint16_t
+pdcp_pre_process_cplane_sn_12_ul(const struct rte_pdcp_entity *entity, struct
rte_mbuf *in_mb[],
+ struct rte_crypto_op *cop[], uint16_t num,
uint16_t *nb_err_ret)
+{
+ struct entity_priv *en_priv = entity_priv_get(entity);
+ struct rte_pdcp_cp_data_pdu_sn_12_hdr *pdu_hdr;
+ uint16_t nb_cop, nb_prep = 0, nb_err = 0;
+ struct rte_mbuf *mb;
+ uint32_t count, sn;
+ uint8_t *mac_i;
+ int i;
+
+ const uint8_t hdr_sz = en_priv->hdr_sz;
+ const uint8_t data_offset = hdr_sz + en_priv->aad_sz;
+ const int is_null_auth = en_priv->flags.is_null_auth;
+
+ nb_cop = rte_crypto_op_bulk_alloc(en_priv->cop_pool,
RTE_CRYPTO_OP_TYPE_SYMMETRIC, cop,
+ num);
+
+ for (i = 0; i < nb_cop; i++) {
+ mb = in_mb[i];
+ /* Prepend PDU header */
+ pdu_hdr = (struct rte_pdcp_cp_data_pdu_sn_12_hdr
*)rte_pktmbuf_prepend(mb, hdr_sz);
+ if (unlikely(pdu_hdr == NULL)) {
+ in_mb[nb_err++] = mb;
+ continue;
+ }
+
+ mac_i = (uint8_t *)rte_pktmbuf_append(mb, RTE_PDCP_MAC_I_LEN);
+ if (unlikely(mac_i == NULL)) {
+ in_mb[nb_err++] = mb;
+ continue;
+ }
+
+ /* Clear MAC-I field for NULL auth */
+ if (is_null_auth)
+ memset(mac_i, 0, RTE_PDCP_MAC_I_LEN);
+
+ /* Update sequence number in the PDU header */
+ count = en_priv->state.tx_next++;
+ sn = pdcp_sn_from_count_get(count,
RTE_SECURITY_PDCP_SN_SIZE_12);
+
+ pdu_hdr->sn_11_8 = ((sn & 0xf00) >> 8);
+ pdu_hdr->sn_7_0 = (sn & 0xff);
+ pdu_hdr->r = 0;
+
+ cop_prepare(en_priv, mb, cop[nb_prep++], data_offset, count,
true);
+ }
+
+ if (unlikely(nb_err))
+ /* Using mempool API since crypto API is not providing bulk
free */
+ rte_mempool_put_bulk(en_priv->cop_pool, (void *)&cop[nb_prep],
nb_cop - nb_prep);
+
+ *nb_err_ret = num - nb_prep;
+
+ return nb_prep;
+}
+
+static uint16_t
+pdcp_post_process_ul(const struct rte_pdcp_entity *entity,
+ struct rte_mbuf *in_mb[], struct rte_mbuf *out_mb[],
+ uint16_t num, uint16_t *nb_err_ret)
+{
+ struct entity_priv *en_priv = entity_priv_get(entity);
+ const uint32_t hdr_trim_sz = en_priv->aad_sz;
+ int i, nb_success = 0, nb_err = 0;
+ struct rte_mbuf *mb, *err_mb[num];
+
+ for (i = 0; i < num; i++) {
+ mb = in_mb[i];
+ if (unlikely(mb->ol_flags & RTE_MBUF_F_RX_SEC_OFFLOAD_FAILED)) {
+ err_mb[nb_err++] = mb;
+ continue;
+ }
+
+ if (hdr_trim_sz)
+ rte_pktmbuf_adj(mb, hdr_trim_sz);
+
+ out_mb[nb_success++] = mb;
+ }
+
+ if (unlikely(nb_err != 0))
+ rte_memcpy(&out_mb[nb_success], err_mb, nb_err * sizeof(struct
rte_mbuf *));
+
+ *nb_err_ret = nb_err;
+ return nb_success;
+}
+
+static int
+pdcp_pre_post_func_set(struct rte_pdcp_entity *entity, const struct
rte_pdcp_entity_conf *conf)
+{
+ entity->pre_process = NULL;
+ entity->post_process = NULL;
+
+ if ((conf->pdcp_xfrm.domain == RTE_SECURITY_PDCP_MODE_CONTROL) &&
+ (conf->pdcp_xfrm.sn_size == RTE_SECURITY_PDCP_SN_SIZE_12) &&
+ (conf->pdcp_xfrm.pkt_dir == RTE_SECURITY_PDCP_UPLINK)) {
+ entity->pre_process = pdcp_pre_process_cplane_sn_12_ul;
+ entity->post_process = pdcp_post_process_ul;
+ }
+
+ if ((conf->pdcp_xfrm.domain == RTE_SECURITY_PDCP_MODE_DATA) &&
+ (conf->pdcp_xfrm.sn_size == RTE_SECURITY_PDCP_SN_SIZE_12) &&
+ (conf->pdcp_xfrm.pkt_dir == RTE_SECURITY_PDCP_UPLINK)) {
+ entity->pre_process = pdcp_pre_process_uplane_sn_12_ul;
+ entity->post_process = pdcp_post_process_ul;
+ }
+
+ if ((conf->pdcp_xfrm.domain == RTE_SECURITY_PDCP_MODE_DATA) &&
+ (conf->pdcp_xfrm.sn_size == RTE_SECURITY_PDCP_SN_SIZE_18) &&
+ (conf->pdcp_xfrm.pkt_dir == RTE_SECURITY_PDCP_UPLINK)) {
+ entity->pre_process = pdcp_pre_process_uplane_sn_18_ul;
+ entity->post_process = pdcp_post_process_ul;
+ }
+
+ if (entity->pre_process == NULL || entity->post_process == NULL)
+ return -ENOTSUP;
+
+ return 0;
+}
+
static int
pdcp_entity_priv_populate(struct entity_priv *en_priv, const struct
rte_pdcp_entity_conf *conf)
{
@@ -134,5 +464,9 @@ pdcp_process_func_set(struct rte_pdcp_entity *entity, const
struct rte_pdcp_enti
if (ret)
return ret;
+ ret = pdcp_pre_post_func_set(entity, conf);
+ if (ret)
+ return ret;
+
return 0;
}
--
2.25.1
