From: Jiawen Wu Date: Fri, 18 Dec 2020 09:36:43 +0000 (+0800) Subject: net/txgbe: configure flow director filter X-Git-Url: http://git.droids-corp.org/?a=commitdiff_plain;h=ea230dda16ad;p=dpdk.git net/txgbe: configure flow director filter Configure flow director filter with it enabled. Signed-off-by: Jiawen Wu --- diff --git a/drivers/net/txgbe/base/txgbe_type.h b/drivers/net/txgbe/base/txgbe_type.h index b9d31ab83e..633692cd7b 100644 --- a/drivers/net/txgbe/base/txgbe_type.h +++ b/drivers/net/txgbe/base/txgbe_type.h @@ -21,6 +21,8 @@ #define TXGBE_MAX_QP (128) #define TXGBE_MAX_UTA 128 +#define TXGBE_FDIR_INIT_DONE_POLL 10 + #define TXGBE_ALIGN 128 /* as intel did */ #include "txgbe_status.h" @@ -65,6 +67,10 @@ enum { #define TXGBE_PHYSICAL_LAYER_10BASE_T 0x08000 #define TXGBE_PHYSICAL_LAYER_2500BASE_KX 0x10000 +/* Software ATR hash keys */ +#define TXGBE_ATR_BUCKET_HASH_KEY 0x3DAD14E2 +#define TXGBE_ATR_SIGNATURE_HASH_KEY 0x174D3614 + #define TXGBE_ATR_HASH_MASK 0x7fff /* Flow Director ATR input struct. */ diff --git a/drivers/net/txgbe/meson.build b/drivers/net/txgbe/meson.build index 45379175d1..bb1683631f 100644 --- a/drivers/net/txgbe/meson.build +++ b/drivers/net/txgbe/meson.build @@ -6,6 +6,7 @@ objs = [base_objs] sources = files( 'txgbe_ethdev.c', + 'txgbe_fdir.c', 'txgbe_flow.c', 'txgbe_ptypes.c', 'txgbe_pf.c', diff --git a/drivers/net/txgbe/txgbe_ethdev.c b/drivers/net/txgbe/txgbe_ethdev.c index eadb44aedb..70abc3ec93 100644 --- a/drivers/net/txgbe/txgbe_ethdev.c +++ b/drivers/net/txgbe/txgbe_ethdev.c @@ -1633,6 +1633,12 @@ txgbe_dev_start(struct rte_eth_dev *dev) txgbe_configure_port(dev); txgbe_configure_dcb(dev); + if (dev->data->dev_conf.fdir_conf.mode != RTE_FDIR_MODE_NONE) { + err = txgbe_fdir_configure(dev); + if (err) + goto error; + } + /* Restore vf rate limit */ if (vfinfo != NULL) { for (vf = 0; vf < pci_dev->max_vfs; vf++) diff --git a/drivers/net/txgbe/txgbe_ethdev.h b/drivers/net/txgbe/txgbe_ethdev.h index 77269e9b73..b49a9e4756 100644 --- a/drivers/net/txgbe/txgbe_ethdev.h +++ b/drivers/net/txgbe/txgbe_ethdev.h @@ -10,6 +10,7 @@ #include "base/txgbe.h" #include "txgbe_ptypes.h" #include +#include #include #include #include @@ -432,6 +433,13 @@ txgbe_dev_l2_tunnel_filter_del(struct rte_eth_dev *dev, void txgbe_set_ivar_map(struct txgbe_hw *hw, int8_t direction, uint8_t queue, uint8_t msix_vector); +/* + * Flow director function prototypes + */ +int txgbe_fdir_configure(struct rte_eth_dev *dev); +int txgbe_fdir_set_input_mask(struct rte_eth_dev *dev); +int txgbe_fdir_set_flexbytes_offset(struct rte_eth_dev *dev, + uint16_t offset); void txgbe_configure_pb(struct rte_eth_dev *dev); void txgbe_configure_port(struct rte_eth_dev *dev); void txgbe_configure_dcb(struct rte_eth_dev *dev); diff --git a/drivers/net/txgbe/txgbe_fdir.c b/drivers/net/txgbe/txgbe_fdir.c new file mode 100644 index 0000000000..c319b7f264 --- /dev/null +++ b/drivers/net/txgbe/txgbe_fdir.c @@ -0,0 +1,434 @@ +/* SPDX-License-Identifier: BSD-3-Clause + * Copyright(c) 2015-2020 + */ + +#include +#include +#include +#include +#include + + +#include "txgbe_logs.h" +#include "base/txgbe.h" +#include "txgbe_ethdev.h" + +#define TXGBE_DEFAULT_FLEXBYTES_OFFSET 12 /*default flexbytes offset in bytes*/ +#define TXGBE_MAX_FLX_SOURCE_OFF 62 + +#define IPV6_ADDR_TO_MASK(ipaddr, ipv6m) do { \ + uint8_t ipv6_addr[16]; \ + uint8_t i; \ + rte_memcpy(ipv6_addr, (ipaddr), sizeof(ipv6_addr));\ + (ipv6m) = 0; \ + for (i = 0; i < sizeof(ipv6_addr); i++) { \ + if (ipv6_addr[i] == UINT8_MAX) \ + (ipv6m) |= 1 << i; \ + else if (ipv6_addr[i] != 0) { \ + PMD_DRV_LOG(ERR, " invalid IPv6 address mask."); \ + return -EINVAL; \ + } \ + } \ +} while (0) + +#define IPV6_MASK_TO_ADDR(ipv6m, ipaddr) do { \ + uint8_t ipv6_addr[16]; \ + uint8_t i; \ + for (i = 0; i < sizeof(ipv6_addr); i++) { \ + if ((ipv6m) & (1 << i)) \ + ipv6_addr[i] = UINT8_MAX; \ + else \ + ipv6_addr[i] = 0; \ + } \ + rte_memcpy((ipaddr), ipv6_addr, sizeof(ipv6_addr));\ +} while (0) + +/** + * Initialize Flow Director control registers + * @hw: pointer to hardware structure + * @fdirctrl: value to write to flow director control register + **/ +static int +txgbe_fdir_enable(struct txgbe_hw *hw, uint32_t fdirctrl) +{ + int i; + + PMD_INIT_FUNC_TRACE(); + + /* Prime the keys for hashing */ + wr32(hw, TXGBE_FDIRBKTHKEY, TXGBE_ATR_BUCKET_HASH_KEY); + wr32(hw, TXGBE_FDIRSIGHKEY, TXGBE_ATR_SIGNATURE_HASH_KEY); + + /* + * Continue setup of fdirctrl register bits: + * Set the maximum length per hash bucket to 0xA filters + * Send interrupt when 64 filters are left + */ + fdirctrl |= TXGBE_FDIRCTL_MAXLEN(0xA) | + TXGBE_FDIRCTL_FULLTHR(4); + + /* + * Poll init-done after we write the register. Estimated times: + * 10G: PBALLOC = 11b, timing is 60us + * 1G: PBALLOC = 11b, timing is 600us + * 100M: PBALLOC = 11b, timing is 6ms + * + * Multiple these timings by 4 if under full Rx load + * + * So we'll poll for TXGBE_FDIR_INIT_DONE_POLL times, sleeping for + * 1 msec per poll time. If we're at line rate and drop to 100M, then + * this might not finish in our poll time, but we can live with that + * for now. + */ + wr32(hw, TXGBE_FDIRCTL, fdirctrl); + txgbe_flush(hw); + for (i = 0; i < TXGBE_FDIR_INIT_DONE_POLL; i++) { + if (rd32(hw, TXGBE_FDIRCTL) & TXGBE_FDIRCTL_INITDONE) + break; + msec_delay(1); + } + + if (i >= TXGBE_FDIR_INIT_DONE_POLL) { + PMD_INIT_LOG(ERR, "Flow Director poll time exceeded during enabling!"); + return -ETIMEDOUT; + } + return 0; +} + +/* + * Set appropriate bits in fdirctrl for: variable reporting levels, moving + * flexbytes matching field, and drop queue (only for perfect matching mode). + */ +static inline int +configure_fdir_flags(const struct rte_fdir_conf *conf, + uint32_t *fdirctrl, uint32_t *flex) +{ + *fdirctrl = 0; + *flex = 0; + + switch (conf->pballoc) { + case RTE_FDIR_PBALLOC_64K: + /* 8k - 1 signature filters */ + *fdirctrl |= TXGBE_FDIRCTL_BUF_64K; + break; + case RTE_FDIR_PBALLOC_128K: + /* 16k - 1 signature filters */ + *fdirctrl |= TXGBE_FDIRCTL_BUF_128K; + break; + case RTE_FDIR_PBALLOC_256K: + /* 32k - 1 signature filters */ + *fdirctrl |= TXGBE_FDIRCTL_BUF_256K; + break; + default: + /* bad value */ + PMD_INIT_LOG(ERR, "Invalid fdir_conf->pballoc value"); + return -EINVAL; + }; + + /* status flags: write hash & swindex in the rx descriptor */ + switch (conf->status) { + case RTE_FDIR_NO_REPORT_STATUS: + /* do nothing, default mode */ + break; + case RTE_FDIR_REPORT_STATUS: + /* report status when the packet matches a fdir rule */ + *fdirctrl |= TXGBE_FDIRCTL_REPORT_MATCH; + break; + case RTE_FDIR_REPORT_STATUS_ALWAYS: + /* always report status */ + *fdirctrl |= TXGBE_FDIRCTL_REPORT_ALWAYS; + break; + default: + /* bad value */ + PMD_INIT_LOG(ERR, "Invalid fdir_conf->status value"); + return -EINVAL; + }; + + *flex |= TXGBE_FDIRFLEXCFG_BASE_MAC; + *flex |= TXGBE_FDIRFLEXCFG_OFST(TXGBE_DEFAULT_FLEXBYTES_OFFSET / 2); + + switch (conf->mode) { + case RTE_FDIR_MODE_SIGNATURE: + break; + case RTE_FDIR_MODE_PERFECT: + *fdirctrl |= TXGBE_FDIRCTL_PERFECT; + *fdirctrl |= TXGBE_FDIRCTL_DROPQP(conf->drop_queue); + break; + default: + /* bad value */ + PMD_INIT_LOG(ERR, "Invalid fdir_conf->mode value"); + return -EINVAL; + } + + return 0; +} + +static inline uint32_t +reverse_fdir_bmks(uint16_t hi_dword, uint16_t lo_dword) +{ + uint32_t mask = hi_dword << 16; + + mask |= lo_dword; + mask = ((mask & 0x55555555) << 1) | ((mask & 0xAAAAAAAA) >> 1); + mask = ((mask & 0x33333333) << 2) | ((mask & 0xCCCCCCCC) >> 2); + mask = ((mask & 0x0F0F0F0F) << 4) | ((mask & 0xF0F0F0F0) >> 4); + return ((mask & 0x00FF00FF) << 8) | ((mask & 0xFF00FF00) >> 8); +} + +int +txgbe_fdir_set_input_mask(struct rte_eth_dev *dev) +{ + struct txgbe_hw *hw = TXGBE_DEV_HW(dev); + struct txgbe_hw_fdir_info *info = TXGBE_DEV_FDIR(dev); + enum rte_fdir_mode mode = dev->data->dev_conf.fdir_conf.mode; + /* + * mask VM pool and DIPv6 since there are currently not supported + * mask FLEX byte, it will be set in flex_conf + */ + uint32_t fdirm = TXGBE_FDIRMSK_POOL; + uint32_t fdirtcpm; /* TCP source and destination port masks. */ + uint32_t fdiripv6m; /* IPv6 source and destination masks. */ + + PMD_INIT_FUNC_TRACE(); + + if (mode != RTE_FDIR_MODE_SIGNATURE && + mode != RTE_FDIR_MODE_PERFECT) { + PMD_DRV_LOG(ERR, "Not supported fdir mode - %d!", mode); + return -ENOTSUP; + } + + /* + * Program the relevant mask registers. If src/dst_port or src/dst_addr + * are zero, then assume a full mask for that field. Also assume that + * a VLAN of 0 is unspecified, so mask that out as well. L4type + * cannot be masked out in this implementation. + */ + if (info->mask.dst_port_mask == 0 && info->mask.src_port_mask == 0) { + /* use the L4 protocol mask for raw IPv4/IPv6 traffic */ + fdirm |= TXGBE_FDIRMSK_L4P; + } + + /* TBD: don't support encapsulation yet */ + wr32(hw, TXGBE_FDIRMSK, fdirm); + + /* store the TCP/UDP port masks, bit reversed from port layout */ + fdirtcpm = reverse_fdir_bmks(rte_be_to_cpu_16(info->mask.dst_port_mask), + rte_be_to_cpu_16(info->mask.src_port_mask)); + + /* write all the same so that UDP, TCP and SCTP use the same mask + * (little-endian) + */ + wr32(hw, TXGBE_FDIRTCPMSK, ~fdirtcpm); + wr32(hw, TXGBE_FDIRUDPMSK, ~fdirtcpm); + wr32(hw, TXGBE_FDIRSCTPMSK, ~fdirtcpm); + + /* Store source and destination IPv4 masks (big-endian) */ + wr32(hw, TXGBE_FDIRSIP4MSK, ~info->mask.src_ipv4_mask); + wr32(hw, TXGBE_FDIRDIP4MSK, ~info->mask.dst_ipv4_mask); + + if (mode == RTE_FDIR_MODE_SIGNATURE) { + /* + * Store source and destination IPv6 masks (bit reversed) + */ + fdiripv6m = TXGBE_FDIRIP6MSK_DST(info->mask.dst_ipv6_mask) | + TXGBE_FDIRIP6MSK_SRC(info->mask.src_ipv6_mask); + + wr32(hw, TXGBE_FDIRIP6MSK, ~fdiripv6m); + } + + return 0; +} + +static int +txgbe_fdir_store_input_mask(struct rte_eth_dev *dev) +{ + struct rte_eth_fdir_masks *input_mask = + &dev->data->dev_conf.fdir_conf.mask; + enum rte_fdir_mode mode = dev->data->dev_conf.fdir_conf.mode; + struct txgbe_hw_fdir_info *info = TXGBE_DEV_FDIR(dev); + uint16_t dst_ipv6m = 0; + uint16_t src_ipv6m = 0; + + if (mode != RTE_FDIR_MODE_SIGNATURE && + mode != RTE_FDIR_MODE_PERFECT) { + PMD_DRV_LOG(ERR, "Not supported fdir mode - %d!", mode); + return -ENOTSUP; + } + + memset(&info->mask, 0, sizeof(struct txgbe_hw_fdir_mask)); + info->mask.vlan_tci_mask = input_mask->vlan_tci_mask; + info->mask.src_port_mask = input_mask->src_port_mask; + info->mask.dst_port_mask = input_mask->dst_port_mask; + info->mask.src_ipv4_mask = input_mask->ipv4_mask.src_ip; + info->mask.dst_ipv4_mask = input_mask->ipv4_mask.dst_ip; + IPV6_ADDR_TO_MASK(input_mask->ipv6_mask.src_ip, src_ipv6m); + IPV6_ADDR_TO_MASK(input_mask->ipv6_mask.dst_ip, dst_ipv6m); + info->mask.src_ipv6_mask = src_ipv6m; + info->mask.dst_ipv6_mask = dst_ipv6m; + + return 0; +} + +int +txgbe_fdir_set_flexbytes_offset(struct rte_eth_dev *dev, + uint16_t offset) +{ + struct txgbe_hw *hw = TXGBE_DEV_HW(dev); + int i; + + for (i = 0; i < 64; i++) { + uint32_t flexreg, flex; + flexreg = rd32(hw, TXGBE_FDIRFLEXCFG(i / 4)); + flex = TXGBE_FDIRFLEXCFG_BASE_MAC; + flex |= TXGBE_FDIRFLEXCFG_OFST(offset / 2); + flexreg &= ~(TXGBE_FDIRFLEXCFG_ALL(~0UL, i % 4)); + flexreg |= TXGBE_FDIRFLEXCFG_ALL(flex, i % 4); + wr32(hw, TXGBE_FDIRFLEXCFG(i / 4), flexreg); + } + + txgbe_flush(hw); + for (i = 0; i < TXGBE_FDIR_INIT_DONE_POLL; i++) { + if (rd32(hw, TXGBE_FDIRCTL) & + TXGBE_FDIRCTL_INITDONE) + break; + msec_delay(1); + } + return 0; +} + +/* + * txgbe_check_fdir_flex_conf -check if the flex payload and mask configuration + * arguments are valid + */ +static int +txgbe_set_fdir_flex_conf(struct rte_eth_dev *dev, uint32_t flex) +{ + const struct rte_eth_fdir_flex_conf *conf = + &dev->data->dev_conf.fdir_conf.flex_conf; + struct txgbe_hw *hw = TXGBE_DEV_HW(dev); + struct txgbe_hw_fdir_info *info = TXGBE_DEV_FDIR(dev); + const struct rte_eth_flex_payload_cfg *flex_cfg; + const struct rte_eth_fdir_flex_mask *flex_mask; + uint16_t flexbytes = 0; + uint16_t i; + + if (conf == NULL) { + PMD_DRV_LOG(ERR, "NULL pointer."); + return -EINVAL; + } + + flex |= TXGBE_FDIRFLEXCFG_DIA; + + for (i = 0; i < conf->nb_payloads; i++) { + flex_cfg = &conf->flex_set[i]; + if (flex_cfg->type != RTE_ETH_RAW_PAYLOAD) { + PMD_DRV_LOG(ERR, "unsupported payload type."); + return -EINVAL; + } + if (((flex_cfg->src_offset[0] & 0x1) == 0) && + (flex_cfg->src_offset[1] == flex_cfg->src_offset[0] + 1) && + flex_cfg->src_offset[0] <= TXGBE_MAX_FLX_SOURCE_OFF) { + flex &= ~TXGBE_FDIRFLEXCFG_OFST_MASK; + flex |= + TXGBE_FDIRFLEXCFG_OFST(flex_cfg->src_offset[0] / 2); + } else { + PMD_DRV_LOG(ERR, "invalid flexbytes arguments."); + return -EINVAL; + } + } + + for (i = 0; i < conf->nb_flexmasks; i++) { + flex_mask = &conf->flex_mask[i]; + if (flex_mask->flow_type != RTE_ETH_FLOW_UNKNOWN) { + PMD_DRV_LOG(ERR, "flexmask should be set globally."); + return -EINVAL; + } + flexbytes = (uint16_t)(((flex_mask->mask[1] << 8) & 0xFF00) | + ((flex_mask->mask[0]) & 0xFF)); + if (flexbytes == UINT16_MAX) { + flex &= ~TXGBE_FDIRFLEXCFG_DIA; + } else if (flexbytes != 0) { + /* TXGBE_FDIRFLEXCFG_DIA is set by default when set mask */ + PMD_DRV_LOG(ERR, " invalid flexbytes mask arguments."); + return -EINVAL; + } + } + + info->mask.flex_bytes_mask = flexbytes ? UINT16_MAX : 0; + info->flex_bytes_offset = (uint8_t)(TXGBD_FDIRFLEXCFG_OFST(flex) * 2); + + for (i = 0; i < 64; i++) { + uint32_t flexreg; + flexreg = rd32(hw, TXGBE_FDIRFLEXCFG(i / 4)); + flexreg &= ~(TXGBE_FDIRFLEXCFG_ALL(~0UL, i % 4)); + flexreg |= TXGBE_FDIRFLEXCFG_ALL(flex, i % 4); + wr32(hw, TXGBE_FDIRFLEXCFG(i / 4), flexreg); + } + return 0; +} + +int +txgbe_fdir_configure(struct rte_eth_dev *dev) +{ + struct txgbe_hw *hw = TXGBE_DEV_HW(dev); + int err; + uint32_t fdirctrl, flex, pbsize; + int i; + enum rte_fdir_mode mode = dev->data->dev_conf.fdir_conf.mode; + + PMD_INIT_FUNC_TRACE(); + + /* supports mac-vlan and tunnel mode */ + if (mode != RTE_FDIR_MODE_SIGNATURE && + mode != RTE_FDIR_MODE_PERFECT) + return -ENOSYS; + + err = configure_fdir_flags(&dev->data->dev_conf.fdir_conf, + &fdirctrl, &flex); + if (err) + return err; + + /* + * Before enabling Flow Director, the Rx Packet Buffer size + * must be reduced. The new value is the current size minus + * flow director memory usage size. + */ + pbsize = rd32(hw, TXGBE_PBRXSIZE(0)); + pbsize -= TXGBD_FDIRCTL_BUF_BYTE(fdirctrl); + wr32(hw, TXGBE_PBRXSIZE(0), pbsize); + + /* + * The defaults in the HW for RX PB 1-7 are not zero and so should be + * initialized to zero for non DCB mode otherwise actual total RX PB + * would be bigger than programmed and filter space would run into + * the PB 0 region. + */ + for (i = 1; i < 8; i++) + wr32(hw, TXGBE_PBRXSIZE(i), 0); + + err = txgbe_fdir_store_input_mask(dev); + if (err < 0) { + PMD_INIT_LOG(ERR, " Error on setting FD mask"); + return err; + } + + err = txgbe_fdir_set_input_mask(dev); + if (err < 0) { + PMD_INIT_LOG(ERR, " Error on setting FD mask"); + return err; + } + + err = txgbe_set_fdir_flex_conf(dev, flex); + if (err < 0) { + PMD_INIT_LOG(ERR, " Error on setting FD flexible arguments."); + return err; + } + + err = txgbe_fdir_enable(hw, fdirctrl); + if (err < 0) { + PMD_INIT_LOG(ERR, " Error on enabling FD."); + return err; + } + return 0; +} +