From 86eb05d6350b1ae10d502cf942d40813e821aa9b Mon Sep 17 00:00:00 2001 From: Beilei Xing Date: Fri, 6 Jan 2017 13:27:09 +0800 Subject: [PATCH] net/i40e: add flow validate function This patch adds i40e_flow_validation function to check if a flow is valid according to the flow pattern. i40e_flow_parse_ethertype_filter is added first, it also gets the ethertype info. i40e_flow.c is added to handle all generic filter events. Signed-off-by: Beilei Xing Acked-by: Jingjing Wu --- drivers/net/i40e/Makefile | 1 + drivers/net/i40e/i40e_ethdev.c | 10 +- drivers/net/i40e/i40e_ethdev.h | 25 ++ drivers/net/i40e/i40e_flow.c | 492 +++++++++++++++++++++++++++++++++ 4 files changed, 523 insertions(+), 5 deletions(-) create mode 100644 drivers/net/i40e/i40e_flow.c diff --git a/drivers/net/i40e/Makefile b/drivers/net/i40e/Makefile index 11175c44d24..89bd85a9245 100644 --- a/drivers/net/i40e/Makefile +++ b/drivers/net/i40e/Makefile @@ -105,6 +105,7 @@ endif SRCS-$(CONFIG_RTE_LIBRTE_I40E_PMD) += i40e_ethdev_vf.c SRCS-$(CONFIG_RTE_LIBRTE_I40E_PMD) += i40e_pf.c SRCS-$(CONFIG_RTE_LIBRTE_I40E_PMD) += i40e_fdir.c +SRCS-$(CONFIG_RTE_LIBRTE_I40E_PMD) += i40e_flow.c # vector PMD driver needs SSE4.1 support ifeq ($(findstring RTE_MACHINE_CPUFLAG_SSE4_1,$(CFLAGS)),) diff --git a/drivers/net/i40e/i40e_ethdev.c b/drivers/net/i40e/i40e_ethdev.c index 75342aa3c08..be00686ad78 100644 --- a/drivers/net/i40e/i40e_ethdev.c +++ b/drivers/net/i40e/i40e_ethdev.c @@ -285,11 +285,6 @@ #define I40E_INSET_IPV6_HOP_LIMIT_MASK 0x000CFF00UL #define I40E_INSET_IPV6_NEXT_HDR_MASK 0x000C00FFUL -#define I40E_GL_SWT_L2TAGCTRL(_i) (0x001C0A70 + ((_i) * 4)) -#define I40E_GL_SWT_L2TAGCTRL_ETHERTYPE_SHIFT 16 -#define I40E_GL_SWT_L2TAGCTRL_ETHERTYPE_MASK \ - I40E_MASK(0xFFFF, I40E_GL_SWT_L2TAGCTRL_ETHERTYPE_SHIFT) - /* PCI offset for querying capability */ #define PCI_DEV_CAP_REG 0xA4 /* PCI offset for enabling/disabling Extended Tag */ @@ -8573,6 +8568,11 @@ i40e_dev_filter_ctrl(struct rte_eth_dev *dev, case RTE_ETH_FILTER_FDIR: ret = i40e_fdir_ctrl_func(dev, filter_op, arg); break; + case RTE_ETH_FILTER_GENERIC: + if (filter_op != RTE_ETH_FILTER_GET) + return -EINVAL; + *(const void **)arg = &i40e_flow_ops; + break; default: PMD_DRV_LOG(WARNING, "Filter type (%d) not supported", filter_type); diff --git a/drivers/net/i40e/i40e_ethdev.h b/drivers/net/i40e/i40e_ethdev.h index 82baab6a148..bfc6ed11c64 100644 --- a/drivers/net/i40e/i40e_ethdev.h +++ b/drivers/net/i40e/i40e_ethdev.h @@ -38,6 +38,7 @@ #include #include #include +#include #define I40E_VLAN_TAG_SIZE 4 @@ -189,6 +190,11 @@ enum i40e_flxpld_layer_idx { #define FLOATING_VEB_SUPPORTED_FW_MAJ 5 #define FLOATING_VEB_SUPPORTED_FW_MIN 0 +#define I40E_GL_SWT_L2TAGCTRL(_i) (0x001C0A70 + ((_i) * 4)) +#define I40E_GL_SWT_L2TAGCTRL_ETHERTYPE_SHIFT 16 +#define I40E_GL_SWT_L2TAGCTRL_ETHERTYPE_MASK \ + I40E_MASK(0xFFFF, I40E_GL_SWT_L2TAGCTRL_ETHERTYPE_SHIFT) + struct i40e_adapter; /** @@ -629,6 +635,25 @@ struct i40e_adapter { struct rte_timecounter tx_tstamp_tc; }; +extern const struct rte_flow_ops i40e_flow_ops; + +union i40e_filter_t { + struct rte_eth_ethertype_filter ethertype_filter; + struct rte_eth_fdir_filter fdir_filter; + struct rte_eth_tunnel_filter_conf tunnel_filter; +}; + +typedef int (*parse_filter_t)(struct rte_eth_dev *dev, + const struct rte_flow_attr *attr, + const struct rte_flow_item pattern[], + const struct rte_flow_action actions[], + struct rte_flow_error *error, + union i40e_filter_t *filter); +struct i40e_valid_pattern { + enum rte_flow_item_type *items; + parse_filter_t parse_filter; +}; + int i40e_dev_switch_queues(struct i40e_pf *pf, bool on); int i40e_vsi_release(struct i40e_vsi *vsi); struct i40e_vsi *i40e_vsi_setup(struct i40e_pf *pf, diff --git a/drivers/net/i40e/i40e_flow.c b/drivers/net/i40e/i40e_flow.c new file mode 100644 index 00000000000..5ca7a42b8dc --- /dev/null +++ b/drivers/net/i40e/i40e_flow.c @@ -0,0 +1,492 @@ +/*- + * BSD LICENSE + * + * Copyright (c) 2016 Intel Corporation. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * * Neither the name of Intel Corporation nor the names of its + * contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#include +#include +#include +#include +#include +#include +#include + +#include +#include +#include +#include +#include +#include +#include +#include + +#include "i40e_logs.h" +#include "base/i40e_type.h" +#include "base/i40e_prototype.h" +#include "i40e_ethdev.h" + +static int i40e_flow_validate(struct rte_eth_dev *dev, + const struct rte_flow_attr *attr, + const struct rte_flow_item pattern[], + const struct rte_flow_action actions[], + struct rte_flow_error *error); +static int +i40e_flow_parse_ethertype_pattern(struct rte_eth_dev *dev, + const struct rte_flow_item *pattern, + struct rte_flow_error *error, + struct rte_eth_ethertype_filter *filter); +static int i40e_flow_parse_ethertype_action(struct rte_eth_dev *dev, + const struct rte_flow_action *actions, + struct rte_flow_error *error, + struct rte_eth_ethertype_filter *filter); +static int i40e_flow_parse_attr(const struct rte_flow_attr *attr, + struct rte_flow_error *error); +static int i40e_flow_parse_ethertype_filter(struct rte_eth_dev *dev, + const struct rte_flow_attr *attr, + const struct rte_flow_item pattern[], + const struct rte_flow_action actions[], + struct rte_flow_error *error, + union i40e_filter_t *filter); + +const struct rte_flow_ops i40e_flow_ops = { + .validate = i40e_flow_validate, +}; + +union i40e_filter_t cons_filter; + +/* Pattern matched ethertype filter */ +static enum rte_flow_item_type pattern_ethertype[] = { + RTE_FLOW_ITEM_TYPE_ETH, + RTE_FLOW_ITEM_TYPE_END, +}; + +static struct i40e_valid_pattern i40e_supported_patterns[] = { + /* Ethertype */ + { pattern_ethertype, i40e_flow_parse_ethertype_filter }, +}; + +#define NEXT_ITEM_OF_ACTION(act, actions, index) \ + do { \ + act = actions + index; \ + while (act->type == RTE_FLOW_ACTION_TYPE_VOID) { \ + index++; \ + act = actions + index; \ + } \ + } while (0) + +/* Find the first VOID or non-VOID item pointer */ +static const struct rte_flow_item * +i40e_find_first_item(const struct rte_flow_item *item, bool is_void) +{ + bool is_find; + + while (item->type != RTE_FLOW_ITEM_TYPE_END) { + if (is_void) + is_find = item->type == RTE_FLOW_ITEM_TYPE_VOID; + else + is_find = item->type != RTE_FLOW_ITEM_TYPE_VOID; + if (is_find) + break; + item++; + } + return item; +} + +/* Skip all VOID items of the pattern */ +static void +i40e_pattern_skip_void_item(struct rte_flow_item *items, + const struct rte_flow_item *pattern) +{ + uint32_t cpy_count = 0; + const struct rte_flow_item *pb = pattern, *pe = pattern; + + for (;;) { + /* Find a non-void item first */ + pb = i40e_find_first_item(pb, false); + if (pb->type == RTE_FLOW_ITEM_TYPE_END) { + pe = pb; + break; + } + + /* Find a void item */ + pe = i40e_find_first_item(pb + 1, true); + + cpy_count = pe - pb; + rte_memcpy(items, pb, sizeof(struct rte_flow_item) * cpy_count); + + items += cpy_count; + + if (pe->type == RTE_FLOW_ITEM_TYPE_END) { + pb = pe; + break; + } + + pb = pe + 1; + } + /* Copy the END item. */ + rte_memcpy(items, pe, sizeof(struct rte_flow_item)); +} + +/* Check if the pattern matches a supported item type array */ +static bool +i40e_match_pattern(enum rte_flow_item_type *item_array, + struct rte_flow_item *pattern) +{ + struct rte_flow_item *item = pattern; + + while ((*item_array == item->type) && + (*item_array != RTE_FLOW_ITEM_TYPE_END)) { + item_array++; + item++; + } + + return (*item_array == RTE_FLOW_ITEM_TYPE_END && + item->type == RTE_FLOW_ITEM_TYPE_END); +} + +/* Find if there's parse filter function matched */ +static parse_filter_t +i40e_find_parse_filter_func(struct rte_flow_item *pattern) +{ + parse_filter_t parse_filter = NULL; + uint8_t i = 0; + + for (; i < RTE_DIM(i40e_supported_patterns); i++) { + if (i40e_match_pattern(i40e_supported_patterns[i].items, + pattern)) { + parse_filter = i40e_supported_patterns[i].parse_filter; + break; + } + } + + return parse_filter; +} + +/* Parse attributes */ +static int +i40e_flow_parse_attr(const struct rte_flow_attr *attr, + struct rte_flow_error *error) +{ + /* Must be input direction */ + if (!attr->ingress) { + rte_flow_error_set(error, EINVAL, + RTE_FLOW_ERROR_TYPE_ATTR_INGRESS, + attr, "Only support ingress."); + return -rte_errno; + } + + /* Not supported */ + if (attr->egress) { + rte_flow_error_set(error, EINVAL, + RTE_FLOW_ERROR_TYPE_ATTR_EGRESS, + attr, "Not support egress."); + return -rte_errno; + } + + /* Not supported */ + if (attr->priority) { + rte_flow_error_set(error, EINVAL, + RTE_FLOW_ERROR_TYPE_ATTR_PRIORITY, + attr, "Not support priority."); + return -rte_errno; + } + + /* Not supported */ + if (attr->group) { + rte_flow_error_set(error, EINVAL, + RTE_FLOW_ERROR_TYPE_ATTR_GROUP, + attr, "Not support group."); + return -rte_errno; + } + + return 0; +} + +static uint16_t +i40e_get_outer_vlan(struct rte_eth_dev *dev) +{ + struct i40e_hw *hw = I40E_DEV_PRIVATE_TO_HW(dev->data->dev_private); + int qinq = dev->data->dev_conf.rxmode.hw_vlan_extend; + uint64_t reg_r = 0; + uint16_t reg_id; + uint16_t tpid; + + if (qinq) + reg_id = 2; + else + reg_id = 3; + + i40e_aq_debug_read_register(hw, I40E_GL_SWT_L2TAGCTRL(reg_id), + ®_r, NULL); + + tpid = (reg_r >> I40E_GL_SWT_L2TAGCTRL_ETHERTYPE_SHIFT) & 0xFFFF; + + return tpid; +} + +/* 1. Last in item should be NULL as range is not supported. + * 2. Supported filter types: MAC_ETHTYPE and ETHTYPE. + * 3. SRC mac_addr mask should be 00:00:00:00:00:00. + * 4. DST mac_addr mask should be 00:00:00:00:00:00 or + * FF:FF:FF:FF:FF:FF + * 5. Ether_type mask should be 0xFFFF. + */ +static int +i40e_flow_parse_ethertype_pattern(struct rte_eth_dev *dev, + const struct rte_flow_item *pattern, + struct rte_flow_error *error, + struct rte_eth_ethertype_filter *filter) +{ + const struct rte_flow_item *item = pattern; + const struct rte_flow_item_eth *eth_spec; + const struct rte_flow_item_eth *eth_mask; + enum rte_flow_item_type item_type; + uint16_t outer_tpid; + + outer_tpid = i40e_get_outer_vlan(dev); + + for (; item->type != RTE_FLOW_ITEM_TYPE_END; item++) { + if (item->last) { + rte_flow_error_set(error, EINVAL, + RTE_FLOW_ERROR_TYPE_ITEM, + item, + "Not support range"); + return -rte_errno; + } + item_type = item->type; + switch (item_type) { + case RTE_FLOW_ITEM_TYPE_ETH: + eth_spec = (const struct rte_flow_item_eth *)item->spec; + eth_mask = (const struct rte_flow_item_eth *)item->mask; + /* Get the MAC info. */ + if (!eth_spec || !eth_mask) { + rte_flow_error_set(error, EINVAL, + RTE_FLOW_ERROR_TYPE_ITEM, + item, + "NULL ETH spec/mask"); + return -rte_errno; + } + + /* Mask bits of source MAC address must be full of 0. + * Mask bits of destination MAC address must be full + * of 1 or full of 0. + */ + if (!is_zero_ether_addr(ð_mask->src) || + (!is_zero_ether_addr(ð_mask->dst) && + !is_broadcast_ether_addr(ð_mask->dst))) { + rte_flow_error_set(error, EINVAL, + RTE_FLOW_ERROR_TYPE_ITEM, + item, + "Invalid MAC_addr mask"); + return -rte_errno; + } + + if ((eth_mask->type & UINT16_MAX) != UINT16_MAX) { + rte_flow_error_set(error, EINVAL, + RTE_FLOW_ERROR_TYPE_ITEM, + item, + "Invalid ethertype mask"); + return -rte_errno; + } + + /* If mask bits of destination MAC address + * are full of 1, set RTE_ETHTYPE_FLAGS_MAC. + */ + if (is_broadcast_ether_addr(ð_mask->dst)) { + filter->mac_addr = eth_spec->dst; + filter->flags |= RTE_ETHTYPE_FLAGS_MAC; + } else { + filter->flags &= ~RTE_ETHTYPE_FLAGS_MAC; + } + filter->ether_type = rte_be_to_cpu_16(eth_spec->type); + + if (filter->ether_type == ETHER_TYPE_IPv4 || + filter->ether_type == ETHER_TYPE_IPv6 || + filter->ether_type == outer_tpid) { + rte_flow_error_set(error, EINVAL, + RTE_FLOW_ERROR_TYPE_ITEM, + item, + "Unsupported ether_type in" + " control packet filter."); + return -rte_errno; + } + break; + default: + break; + } + } + + return 0; +} + +/* Ethertype action only supports QUEUE or DROP. */ +static int +i40e_flow_parse_ethertype_action(struct rte_eth_dev *dev, + const struct rte_flow_action *actions, + struct rte_flow_error *error, + struct rte_eth_ethertype_filter *filter) +{ + struct i40e_pf *pf = I40E_DEV_PRIVATE_TO_PF(dev->data->dev_private); + const struct rte_flow_action *act; + const struct rte_flow_action_queue *act_q; + uint32_t index = 0; + + /* Check if the first non-void action is QUEUE or DROP. */ + NEXT_ITEM_OF_ACTION(act, actions, index); + if (act->type != RTE_FLOW_ACTION_TYPE_QUEUE && + act->type != RTE_FLOW_ACTION_TYPE_DROP) { + rte_flow_error_set(error, EINVAL, RTE_FLOW_ERROR_TYPE_ACTION, + act, "Not supported action."); + return -rte_errno; + } + + if (act->type == RTE_FLOW_ACTION_TYPE_QUEUE) { + act_q = (const struct rte_flow_action_queue *)act->conf; + filter->queue = act_q->index; + if (filter->queue >= pf->dev_data->nb_rx_queues) { + rte_flow_error_set(error, EINVAL, + RTE_FLOW_ERROR_TYPE_ACTION, + act, "Invalid queue ID for" + " ethertype_filter."); + return -rte_errno; + } + } else { + filter->flags |= RTE_ETHTYPE_FLAGS_DROP; + } + + /* Check if the next non-void item is END */ + index++; + NEXT_ITEM_OF_ACTION(act, actions, index); + if (act->type != RTE_FLOW_ACTION_TYPE_END) { + rte_flow_error_set(error, EINVAL, RTE_FLOW_ERROR_TYPE_ACTION, + act, "Not supported action."); + return -rte_errno; + } + + return 0; +} + +static int +i40e_flow_parse_ethertype_filter(struct rte_eth_dev *dev, + const struct rte_flow_attr *attr, + const struct rte_flow_item pattern[], + const struct rte_flow_action actions[], + struct rte_flow_error *error, + union i40e_filter_t *filter) +{ + struct rte_eth_ethertype_filter *ethertype_filter = + &filter->ethertype_filter; + int ret; + + ret = i40e_flow_parse_ethertype_pattern(dev, pattern, error, + ethertype_filter); + if (ret) + return ret; + + ret = i40e_flow_parse_ethertype_action(dev, actions, error, + ethertype_filter); + if (ret) + return ret; + + ret = i40e_flow_parse_attr(attr, error); + if (ret) + return ret; + + return ret; +} + +static int +i40e_flow_validate(struct rte_eth_dev *dev, + const struct rte_flow_attr *attr, + const struct rte_flow_item pattern[], + const struct rte_flow_action actions[], + struct rte_flow_error *error) +{ + struct rte_flow_item *items; /* internal pattern w/o VOID items */ + parse_filter_t parse_filter; + uint32_t item_num = 0; /* non-void item number of pattern*/ + uint32_t i = 0; + int ret; + + if (!pattern) { + rte_flow_error_set(error, EINVAL, RTE_FLOW_ERROR_TYPE_ITEM_NUM, + NULL, "NULL pattern."); + return -rte_errno; + } + + if (!actions) { + rte_flow_error_set(error, EINVAL, + RTE_FLOW_ERROR_TYPE_ACTION_NUM, + NULL, "NULL action."); + return -rte_errno; + } + + if (!attr) { + rte_flow_error_set(error, EINVAL, + RTE_FLOW_ERROR_TYPE_ATTR, + NULL, "NULL attribute."); + return -rte_errno; + } + + memset(&cons_filter, 0, sizeof(cons_filter)); + + /* Get the non-void item number of pattern */ + while ((pattern + i)->type != RTE_FLOW_ITEM_TYPE_END) { + if ((pattern + i)->type != RTE_FLOW_ITEM_TYPE_VOID) + item_num++; + i++; + } + item_num++; + + items = rte_zmalloc("i40e_pattern", + item_num * sizeof(struct rte_flow_item), 0); + if (!items) { + rte_flow_error_set(error, ENOMEM, RTE_FLOW_ERROR_TYPE_ITEM_NUM, + NULL, "No memory for PMD internal items."); + return -ENOMEM; + } + + i40e_pattern_skip_void_item(items, pattern); + + /* Find if there's matched parse filter function */ + parse_filter = i40e_find_parse_filter_func(items); + if (!parse_filter) { + rte_flow_error_set(error, EINVAL, + RTE_FLOW_ERROR_TYPE_ITEM, + pattern, "Unsupported pattern"); + return -rte_errno; + } + + ret = parse_filter(dev, attr, items, actions, error, &cons_filter); + + rte_free(items); + + return ret; +}