numam-dpdk/drivers/net/octeontx2/otx2_ethdev_sec_tx.h
Andrew Rybchenko ad276d5c7e mempool: add namespace to internal helpers
Add RTE_ prefix to internal API defined in public header.
Use the prefix instead of double underscore.
Use uppercase for macros in the case of name conflict.

Signed-off-by: Andrew Rybchenko <andrew.rybchenko@oktetlabs.ru>
Acked-by: Olivier Matz <olivier.matz@6wind.com>
2021-10-20 10:00:18 +02:00

183 lines
4.9 KiB
C

/* SPDX-License-Identifier: BSD-3-Clause
* Copyright(C) 2020 Marvell International Ltd.
*/
#ifndef __OTX2_ETHDEV_SEC_TX_H__
#define __OTX2_ETHDEV_SEC_TX_H__
#include <rte_security.h>
#include <rte_mbuf.h>
#include "otx2_ethdev_sec.h"
#include "otx2_security.h"
struct otx2_ipsec_fp_out_hdr {
uint32_t ip_id;
uint32_t seq;
uint8_t iv[16];
};
static __rte_always_inline int32_t
otx2_ipsec_fp_out_rlen_get(struct otx2_sec_session_ipsec_ip *sess,
uint32_t plen)
{
uint32_t enc_payload_len;
enc_payload_len = RTE_ALIGN_CEIL(plen + sess->roundup_len,
sess->roundup_byte);
return sess->partial_len + enc_payload_len;
}
static __rte_always_inline void
otx2_ssogws_head_wait(uint64_t base);
static __rte_always_inline int
otx2_sec_event_tx(uint64_t base, struct rte_event *ev, struct rte_mbuf *m,
const struct otx2_eth_txq *txq, const uint32_t offload_flags)
{
uint32_t dlen, rlen, desc_headroom, extend_head, extend_tail;
struct otx2_sec_session_ipsec_ip *sess;
struct otx2_ipsec_fp_out_hdr *hdr;
struct otx2_ipsec_fp_out_sa *sa;
uint64_t data_addr, desc_addr;
struct otx2_sec_session *priv;
struct otx2_cpt_inst_s inst;
uint64_t lmt_status;
char *data;
struct desc {
struct otx2_cpt_res cpt_res __rte_aligned(OTX2_CPT_RES_ALIGN);
struct nix_send_hdr_s nix_hdr
__rte_aligned(OTX2_NIX_SEND_DESC_ALIGN);
union nix_send_sg_s nix_sg;
struct nix_iova_s nix_iova;
} *sd;
priv = get_sec_session_private_data((void *)(*rte_security_dynfield(m)));
sess = &priv->ipsec.ip;
sa = &sess->out_sa;
RTE_ASSERT(sess->cpt_lmtline != NULL);
RTE_ASSERT(!(offload_flags & NIX_TX_OFFLOAD_VLAN_QINQ_F));
dlen = rte_pktmbuf_pkt_len(m) + sizeof(*hdr) - RTE_ETHER_HDR_LEN;
rlen = otx2_ipsec_fp_out_rlen_get(sess, dlen - sizeof(*hdr));
RTE_BUILD_BUG_ON(OTX2_CPT_RES_ALIGN % OTX2_NIX_SEND_DESC_ALIGN);
RTE_BUILD_BUG_ON(sizeof(sd->cpt_res) % OTX2_NIX_SEND_DESC_ALIGN);
extend_head = sizeof(*hdr);
extend_tail = rlen - dlen;
desc_headroom = (OTX2_CPT_RES_ALIGN - 1) + sizeof(*sd);
if (unlikely(!rte_pktmbuf_is_contiguous(m)) ||
unlikely(rte_pktmbuf_headroom(m) < extend_head + desc_headroom) ||
unlikely(rte_pktmbuf_tailroom(m) < extend_tail)) {
goto drop;
}
/*
* Extend mbuf data to point to the expected packet buffer for NIX.
* This includes the Ethernet header followed by the encrypted IPsec
* payload
*/
rte_pktmbuf_append(m, extend_tail);
data = rte_pktmbuf_prepend(m, extend_head);
data_addr = rte_pktmbuf_iova(m);
/*
* Move the Ethernet header, to insert otx2_ipsec_fp_out_hdr prior
* to the IP header
*/
memcpy(data, data + sizeof(*hdr), RTE_ETHER_HDR_LEN);
hdr = (struct otx2_ipsec_fp_out_hdr *)(data + RTE_ETHER_HDR_LEN);
if (sa->ctl.enc_type == OTX2_IPSEC_FP_SA_ENC_AES_GCM) {
/* AES-128-GCM */
memcpy(hdr->iv, &sa->nonce, 4);
memset(hdr->iv + 4, 0, 12); //TODO: make it random
} else {
/* AES-128-[CBC] + [SHA1] */
memset(hdr->iv, 0, 16); //TODO: make it random
}
/* Keep CPT result and NIX send descriptors in headroom */
sd = (void *)RTE_PTR_ALIGN(data - desc_headroom, OTX2_CPT_RES_ALIGN);
desc_addr = data_addr - RTE_PTR_DIFF(data, sd);
/* Prepare CPT instruction */
inst.nixtx_addr = (desc_addr + offsetof(struct desc, nix_hdr)) >> 4;
inst.doneint = 0;
inst.nixtxl = 1;
inst.res_addr = desc_addr + offsetof(struct desc, cpt_res);
inst.u64[2] = 0;
inst.u64[3] = 0;
inst.wqe_ptr = desc_addr >> 3; /* FIXME: Handle errors */
inst.qord = 1;
inst.opcode = OTX2_CPT_OP_INLINE_IPSEC_OUTB;
inst.dlen = dlen;
inst.dptr = data_addr + RTE_ETHER_HDR_LEN;
inst.u64[7] = sess->inst_w7;
/* First word contains 8 bit completion code & 8 bit uc comp code */
sd->cpt_res.u16[0] = 0;
/* Prepare NIX send descriptors for output expected from CPT */
sd->nix_hdr.w0.u = 0;
sd->nix_hdr.w1.u = 0;
sd->nix_hdr.w0.sq = txq->sq;
sd->nix_hdr.w0.sizem1 = 1;
sd->nix_hdr.w0.total = rte_pktmbuf_data_len(m);
sd->nix_hdr.w0.aura = npa_lf_aura_handle_to_aura(m->pool->pool_id);
if (offload_flags & NIX_TX_OFFLOAD_MBUF_NOFF_F)
sd->nix_hdr.w0.df = otx2_nix_prefree_seg(m);
sd->nix_sg.u = 0;
sd->nix_sg.subdc = NIX_SUBDC_SG;
sd->nix_sg.ld_type = NIX_SENDLDTYPE_LDD;
sd->nix_sg.segs = 1;
sd->nix_sg.seg1_size = rte_pktmbuf_data_len(m);
sd->nix_iova.addr = rte_mbuf_data_iova(m);
/* Mark mempool object as "put" since it is freed by NIX */
RTE_MEMPOOL_CHECK_COOKIES(m->pool, (void **)&m, 1, 0);
if (!ev->sched_type)
otx2_ssogws_head_wait(base + SSOW_LF_GWS_TAG);
inst.param1 = sess->esn_hi >> 16;
inst.param2 = sess->esn_hi & 0xffff;
hdr->seq = rte_cpu_to_be_32(sess->seq);
hdr->ip_id = rte_cpu_to_be_32(sess->ip_id);
sess->ip_id++;
sess->esn++;
rte_io_wmb();
do {
otx2_lmt_mov(sess->cpt_lmtline, &inst, 2);
lmt_status = otx2_lmt_submit(sess->cpt_nq_reg);
} while (lmt_status == 0);
return 1;
drop:
if (offload_flags & NIX_TX_OFFLOAD_MBUF_NOFF_F) {
/* Don't free if reference count > 1 */
if (rte_pktmbuf_prefree_seg(m) == NULL)
return 0;
}
rte_pktmbuf_free(m);
return 0;
}
#endif /* __OTX2_ETHDEV_SEC_TX_H__ */