From 07cafb2adbc5b6b2b1c014136b9541cd42bd1558 Mon Sep 17 00:00:00 2001 From: Jiawen Wu Date: Fri, 18 Dec 2020 17:36:59 +0800 Subject: [PATCH] net/txgbe: add security session create operation Add support to configure a security session. Signed-off-by: Jiawen Wu --- drivers/net/txgbe/txgbe_ethdev.h | 9 ++ drivers/net/txgbe/txgbe_ipsec.c | 251 +++++++++++++++++++++++++++++++ drivers/net/txgbe/txgbe_ipsec.h | 77 ++++++++++ 3 files changed, 337 insertions(+) create mode 100644 drivers/net/txgbe/txgbe_ipsec.h diff --git a/drivers/net/txgbe/txgbe_ethdev.h b/drivers/net/txgbe/txgbe_ethdev.h index 901eb2b8d0..fe36acc255 100644 --- a/drivers/net/txgbe/txgbe_ethdev.h +++ b/drivers/net/txgbe/txgbe_ethdev.h @@ -9,6 +9,9 @@ #include "base/txgbe.h" #include "txgbe_ptypes.h" +#ifdef RTE_LIB_SECURITY +#include "txgbe_ipsec.h" +#endif #include #include #include @@ -357,6 +360,9 @@ struct txgbe_adapter { struct txgbe_filter_info filter; struct txgbe_l2_tn_info l2_tn; struct txgbe_bw_conf bw_conf; +#ifdef RTE_LIB_SECURITY + struct txgbe_ipsec ipsec; +#endif bool rx_bulk_alloc_allowed; struct rte_timecounter systime_tc; struct rte_timecounter rx_tstamp_tc; @@ -415,6 +421,9 @@ struct txgbe_adapter { #define TXGBE_DEV_TM_CONF(dev) \ (&((struct txgbe_adapter *)(dev)->data->dev_private)->tm_conf) +#define TXGBE_DEV_IPSEC(dev) \ + (&((struct txgbe_adapter *)(dev)->data->dev_private)->ipsec) + /* * RX/TX function prototypes */ diff --git a/drivers/net/txgbe/txgbe_ipsec.c b/drivers/net/txgbe/txgbe_ipsec.c index 9e400b6304..24dd09191a 100644 --- a/drivers/net/txgbe/txgbe_ipsec.c +++ b/drivers/net/txgbe/txgbe_ipsec.c @@ -8,6 +8,256 @@ #include "base/txgbe.h" #include "txgbe_ethdev.h" +#include "txgbe_ipsec.h" + +#define CMP_IP(a, b) (\ + (a).ipv6[0] == (b).ipv6[0] && \ + (a).ipv6[1] == (b).ipv6[1] && \ + (a).ipv6[2] == (b).ipv6[2] && \ + (a).ipv6[3] == (b).ipv6[3]) + +static int +txgbe_crypto_add_sa(struct txgbe_crypto_session *ic_session) +{ + struct rte_eth_dev *dev = ic_session->dev; + struct txgbe_hw *hw = TXGBE_DEV_HW(dev); + struct txgbe_ipsec *priv = TXGBE_DEV_IPSEC(dev); + uint32_t reg_val; + int sa_index = -1; + + if (ic_session->op == TXGBE_OP_AUTHENTICATED_DECRYPTION) { + int i, ip_index = -1; + uint8_t *key; + + /* Find a match in the IP table*/ + for (i = 0; i < IPSEC_MAX_RX_IP_COUNT; i++) { + if (CMP_IP(priv->rx_ip_tbl[i].ip, + ic_session->dst_ip)) { + ip_index = i; + break; + } + } + /* If no match, find a free entry in the IP table*/ + if (ip_index < 0) { + for (i = 0; i < IPSEC_MAX_RX_IP_COUNT; i++) { + if (priv->rx_ip_tbl[i].ref_count == 0) { + ip_index = i; + break; + } + } + } + + /* Fail if no match and no free entries*/ + if (ip_index < 0) { + PMD_DRV_LOG(ERR, + "No free entry left in the Rx IP table\n"); + return -1; + } + + /* Find a free entry in the SA table*/ + for (i = 0; i < IPSEC_MAX_SA_COUNT; i++) { + if (priv->rx_sa_tbl[i].used == 0) { + sa_index = i; + break; + } + } + /* Fail if no free entries*/ + if (sa_index < 0) { + PMD_DRV_LOG(ERR, + "No free entry left in the Rx SA table\n"); + return -1; + } + + priv->rx_ip_tbl[ip_index].ip.ipv6[0] = + ic_session->dst_ip.ipv6[0]; + priv->rx_ip_tbl[ip_index].ip.ipv6[1] = + ic_session->dst_ip.ipv6[1]; + priv->rx_ip_tbl[ip_index].ip.ipv6[2] = + ic_session->dst_ip.ipv6[2]; + priv->rx_ip_tbl[ip_index].ip.ipv6[3] = + ic_session->dst_ip.ipv6[3]; + priv->rx_ip_tbl[ip_index].ref_count++; + + priv->rx_sa_tbl[sa_index].spi = ic_session->spi; + priv->rx_sa_tbl[sa_index].ip_index = ip_index; + priv->rx_sa_tbl[sa_index].mode = IPSRXMOD_VALID; + if (ic_session->op == TXGBE_OP_AUTHENTICATED_DECRYPTION) + priv->rx_sa_tbl[sa_index].mode |= + (IPSRXMOD_PROTO | IPSRXMOD_DECRYPT); + if (ic_session->dst_ip.type == IPv6) { + priv->rx_sa_tbl[sa_index].mode |= IPSRXMOD_IPV6; + priv->rx_ip_tbl[ip_index].ip.type = IPv6; + } else if (ic_session->dst_ip.type == IPv4) { + priv->rx_ip_tbl[ip_index].ip.type = IPv4; + } + priv->rx_sa_tbl[sa_index].used = 1; + + /* write IP table entry*/ + reg_val = TXGBE_IPSRXIDX_ENA | TXGBE_IPSRXIDX_WRITE | + TXGBE_IPSRXIDX_TB_IP | (ip_index << 3); + if (priv->rx_ip_tbl[ip_index].ip.type == IPv4) { + wr32(hw, TXGBE_IPSRXADDR(0), 0); + wr32(hw, TXGBE_IPSRXADDR(1), 0); + wr32(hw, TXGBE_IPSRXADDR(2), 0); + wr32(hw, TXGBE_IPSRXADDR(3), + priv->rx_ip_tbl[ip_index].ip.ipv4); + } else { + wr32(hw, TXGBE_IPSRXADDR(0), + priv->rx_ip_tbl[ip_index].ip.ipv6[0]); + wr32(hw, TXGBE_IPSRXADDR(1), + priv->rx_ip_tbl[ip_index].ip.ipv6[1]); + wr32(hw, TXGBE_IPSRXADDR(2), + priv->rx_ip_tbl[ip_index].ip.ipv6[2]); + wr32(hw, TXGBE_IPSRXADDR(3), + priv->rx_ip_tbl[ip_index].ip.ipv6[3]); + } + wr32w(hw, TXGBE_IPSRXIDX, reg_val, TXGBE_IPSRXIDX_WRITE, 1000); + + /* write SPI table entry*/ + reg_val = TXGBE_IPSRXIDX_ENA | TXGBE_IPSRXIDX_WRITE | + TXGBE_IPSRXIDX_TB_SPI | (sa_index << 3); + wr32(hw, TXGBE_IPSRXSPI, + priv->rx_sa_tbl[sa_index].spi); + wr32(hw, TXGBE_IPSRXADDRIDX, + priv->rx_sa_tbl[sa_index].ip_index); + wr32w(hw, TXGBE_IPSRXIDX, reg_val, TXGBE_IPSRXIDX_WRITE, 1000); + + /* write Key table entry*/ + key = malloc(ic_session->key_len); + if (!key) + return -ENOMEM; + + memcpy(key, ic_session->key, ic_session->key_len); + + reg_val = TXGBE_IPSRXIDX_ENA | TXGBE_IPSRXIDX_WRITE | + TXGBE_IPSRXIDX_TB_KEY | (sa_index << 3); + wr32(hw, TXGBE_IPSRXKEY(0), + rte_cpu_to_be_32(*(uint32_t *)&key[12])); + wr32(hw, TXGBE_IPSRXKEY(1), + rte_cpu_to_be_32(*(uint32_t *)&key[8])); + wr32(hw, TXGBE_IPSRXKEY(2), + rte_cpu_to_be_32(*(uint32_t *)&key[4])); + wr32(hw, TXGBE_IPSRXKEY(3), + rte_cpu_to_be_32(*(uint32_t *)&key[0])); + wr32(hw, TXGBE_IPSRXSALT, + rte_cpu_to_be_32(ic_session->salt)); + wr32(hw, TXGBE_IPSRXMODE, + priv->rx_sa_tbl[sa_index].mode); + wr32w(hw, TXGBE_IPSRXIDX, reg_val, TXGBE_IPSRXIDX_WRITE, 1000); + + free(key); + } else { /* sess->dir == RTE_CRYPTO_OUTBOUND */ + uint8_t *key; + int i; + + /* Find a free entry in the SA table*/ + for (i = 0; i < IPSEC_MAX_SA_COUNT; i++) { + if (priv->tx_sa_tbl[i].used == 0) { + sa_index = i; + break; + } + } + /* Fail if no free entries*/ + if (sa_index < 0) { + PMD_DRV_LOG(ERR, + "No free entry left in the Tx SA table\n"); + return -1; + } + + priv->tx_sa_tbl[sa_index].spi = + rte_cpu_to_be_32(ic_session->spi); + priv->tx_sa_tbl[i].used = 1; + ic_session->sa_index = sa_index; + + key = malloc(ic_session->key_len); + if (!key) + return -ENOMEM; + + memcpy(key, ic_session->key, ic_session->key_len); + + /* write Key table entry*/ + reg_val = TXGBE_IPSRXIDX_ENA | + TXGBE_IPSRXIDX_WRITE | (sa_index << 3); + wr32(hw, TXGBE_IPSTXKEY(0), + rte_cpu_to_be_32(*(uint32_t *)&key[12])); + wr32(hw, TXGBE_IPSTXKEY(1), + rte_cpu_to_be_32(*(uint32_t *)&key[8])); + wr32(hw, TXGBE_IPSTXKEY(2), + rte_cpu_to_be_32(*(uint32_t *)&key[4])); + wr32(hw, TXGBE_IPSTXKEY(3), + rte_cpu_to_be_32(*(uint32_t *)&key[0])); + wr32(hw, TXGBE_IPSTXSALT, + rte_cpu_to_be_32(ic_session->salt)); + wr32w(hw, TXGBE_IPSTXIDX, reg_val, TXGBE_IPSTXIDX_WRITE, 1000); + + free(key); + } + + return 0; +} + +static int +txgbe_crypto_create_session(void *device, + struct rte_security_session_conf *conf, + struct rte_security_session *session, + struct rte_mempool *mempool) +{ + struct rte_eth_dev *eth_dev = (struct rte_eth_dev *)device; + struct txgbe_crypto_session *ic_session = NULL; + struct rte_crypto_aead_xform *aead_xform; + struct rte_eth_conf *dev_conf = ð_dev->data->dev_conf; + + if (rte_mempool_get(mempool, (void **)&ic_session)) { + PMD_DRV_LOG(ERR, "Cannot get object from ic_session mempool"); + return -ENOMEM; + } + + if (conf->crypto_xform->type != RTE_CRYPTO_SYM_XFORM_AEAD || + conf->crypto_xform->aead.algo != + RTE_CRYPTO_AEAD_AES_GCM) { + PMD_DRV_LOG(ERR, "Unsupported crypto transformation mode\n"); + rte_mempool_put(mempool, (void *)ic_session); + return -ENOTSUP; + } + aead_xform = &conf->crypto_xform->aead; + + if (conf->ipsec.direction == RTE_SECURITY_IPSEC_SA_DIR_INGRESS) { + if (dev_conf->rxmode.offloads & DEV_RX_OFFLOAD_SECURITY) { + ic_session->op = TXGBE_OP_AUTHENTICATED_DECRYPTION; + } else { + PMD_DRV_LOG(ERR, "IPsec decryption not enabled\n"); + rte_mempool_put(mempool, (void *)ic_session); + return -ENOTSUP; + } + } else { + if (dev_conf->txmode.offloads & DEV_TX_OFFLOAD_SECURITY) { + ic_session->op = TXGBE_OP_AUTHENTICATED_ENCRYPTION; + } else { + PMD_DRV_LOG(ERR, "IPsec encryption not enabled\n"); + rte_mempool_put(mempool, (void *)ic_session); + return -ENOTSUP; + } + } + + ic_session->key = aead_xform->key.data; + ic_session->key_len = aead_xform->key.length; + memcpy(&ic_session->salt, + &aead_xform->key.data[aead_xform->key.length], 4); + ic_session->spi = conf->ipsec.spi; + ic_session->dev = eth_dev; + + set_sec_session_private_data(session, ic_session); + + if (ic_session->op == TXGBE_OP_AUTHENTICATED_ENCRYPTION) { + if (txgbe_crypto_add_sa(ic_session)) { + PMD_DRV_LOG(ERR, "Failed to add SA\n"); + rte_mempool_put(mempool, (void *)ic_session); + return -EPERM; + } + } + + return 0; +} static const struct rte_security_capability * txgbe_crypto_capabilities_get(void *device __rte_unused) @@ -136,6 +386,7 @@ txgbe_crypto_capabilities_get(void *device __rte_unused) } static struct rte_security_ops txgbe_security_ops = { + .session_create = txgbe_crypto_create_session, .capabilities_get = txgbe_crypto_capabilities_get }; diff --git a/drivers/net/txgbe/txgbe_ipsec.h b/drivers/net/txgbe/txgbe_ipsec.h new file mode 100644 index 0000000000..2f0d813bc5 --- /dev/null +++ b/drivers/net/txgbe/txgbe_ipsec.h @@ -0,0 +1,77 @@ +/* SPDX-License-Identifier: BSD-3-Clause + * Copyright(c) 2015-2020 + */ + +#ifndef TXGBE_IPSEC_H_ +#define TXGBE_IPSEC_H_ + +#include +#include +#include + +#define IPSRXMOD_VALID 0x00000001 +#define IPSRXMOD_PROTO 0x00000004 +#define IPSRXMOD_DECRYPT 0x00000008 +#define IPSRXMOD_IPV6 0x00000010 + +#define IPSEC_MAX_RX_IP_COUNT 128 +#define IPSEC_MAX_SA_COUNT 1024 + +enum txgbe_operation { + TXGBE_OP_AUTHENTICATED_ENCRYPTION, + TXGBE_OP_AUTHENTICATED_DECRYPTION +}; + +/** + * Generic IP address structure + * TODO: Find better location for this rte_net.h possibly. + **/ +struct ipaddr { + enum ipaddr_type { + IPv4, + IPv6 + } type; + /**< IP Address Type - IPv4/IPv6 */ + + union { + uint32_t ipv4; + uint32_t ipv6[4]; + }; +}; + +/** inline crypto private session structure */ +struct txgbe_crypto_session { + enum txgbe_operation op; + const uint8_t *key; + uint32_t key_len; + uint32_t salt; + uint32_t sa_index; + uint32_t spi; + struct ipaddr src_ip; + struct ipaddr dst_ip; + struct rte_eth_dev *dev; +} __rte_cache_aligned; + +struct txgbe_crypto_rx_ip_table { + struct ipaddr ip; + uint16_t ref_count; +}; +struct txgbe_crypto_rx_sa_table { + uint32_t spi; + uint32_t ip_index; + uint8_t mode; + uint8_t used; +}; + +struct txgbe_crypto_tx_sa_table { + uint32_t spi; + uint8_t used; +}; + +struct txgbe_ipsec { + struct txgbe_crypto_rx_ip_table rx_ip_tbl[IPSEC_MAX_RX_IP_COUNT]; + struct txgbe_crypto_rx_sa_table rx_sa_tbl[IPSEC_MAX_SA_COUNT]; + struct txgbe_crypto_tx_sa_table tx_sa_tbl[IPSEC_MAX_SA_COUNT]; +}; + +#endif /*TXGBE_IPSEC_H_*/ -- 2.20.1