@@ -35,7 +35,6 @@ SRCS-$(CONFIG_RTE_LIBRTE_MLX5_PMD) += mlx5_flow_dv.c
SRCS-$(CONFIG_RTE_LIBRTE_MLX5_PMD) += mlx5_flow_verbs.c
SRCS-$(CONFIG_RTE_LIBRTE_MLX5_PMD) += mlx5_socket.c
SRCS-$(CONFIG_RTE_LIBRTE_MLX5_PMD) += mlx5_nl.c
-SRCS-$(CONFIG_RTE_LIBRTE_MLX5_PMD) += mlx5_nl_flow.c
ifeq ($(CONFIG_RTE_LIBRTE_MLX5_DLOPEN_DEPS),y)
INSTALL-$(CONFIG_RTE_LIBRTE_MLX5_PMD)-lib += $(LIB_GLUE)
@@ -36,7 +36,6 @@ if build
'mlx5_mac.c',
'mlx5_mr.c',
'mlx5_nl.c',
- 'mlx5_nl_flow.c',
'mlx5_rss.c',
'mlx5_rxmode.c',
'mlx5_rxq.c',
@@ -286,8 +286,6 @@ mlx5_dev_close(struct rte_eth_dev *dev)
close(priv->nl_socket_route);
if (priv->nl_socket_rdma >= 0)
close(priv->nl_socket_rdma);
- if (priv->mnl_socket)
- mlx5_nl_flow_socket_destroy(priv->mnl_socket);
ret = mlx5_hrxq_ibv_verify(dev);
if (ret)
DRV_LOG(WARNING, "port %u some hash Rx queue still remain",
@@ -1137,34 +1135,6 @@ mlx5_dev_spawn(struct rte_device *dpdk_dev,
claim_zero(mlx5_mac_addr_add(eth_dev, &mac, 0, 0));
if (vf && config.vf_nl_en)
mlx5_nl_mac_addr_sync(eth_dev);
- priv->mnl_socket = mlx5_nl_flow_socket_create();
- if (!priv->mnl_socket) {
- err = -rte_errno;
- DRV_LOG(WARNING,
- "flow rules relying on switch offloads will not be"
- " supported: cannot open libmnl socket: %s",
- strerror(rte_errno));
- } else {
- struct rte_flow_error error;
- unsigned int ifindex = mlx5_ifindex(eth_dev);
-
- if (!ifindex) {
- err = -rte_errno;
- error.message =
- "cannot retrieve network interface index";
- } else {
- err = mlx5_nl_flow_init(priv->mnl_socket, ifindex,
- &error);
- }
- if (err) {
- DRV_LOG(WARNING,
- "flow rules relying on switch offloads will"
- " not be supported: %s: %s",
- error.message, strerror(rte_errno));
- mlx5_nl_flow_socket_destroy(priv->mnl_socket);
- priv->mnl_socket = NULL;
- }
- }
TAILQ_INIT(&priv->flows);
TAILQ_INIT(&priv->ctrl_flows);
/* Hint libmlx5 to use PMD allocator for data plane resources */
@@ -1217,8 +1187,6 @@ mlx5_dev_spawn(struct rte_device *dpdk_dev,
close(priv->nl_socket_route);
if (priv->nl_socket_rdma >= 0)
close(priv->nl_socket_rdma);
- if (priv->mnl_socket)
- mlx5_nl_flow_socket_destroy(priv->mnl_socket);
if (own_domain_id)
claim_zero(rte_eth_switch_domain_free(priv->domain_id));
rte_free(priv);
@@ -158,12 +158,6 @@ struct mlx5_drop {
struct mlx5_rxq_ibv *rxq; /* Verbs Rx queue. */
};
-/** DPDK port to network interface index (ifindex) conversion. */
-struct mlx5_nl_flow_ptoi {
- uint16_t port_id; /**< DPDK port ID. */
- unsigned int ifindex; /**< Network interface index. */
-};
-
struct mnl_socket;
struct priv {
@@ -399,23 +393,4 @@ unsigned int mlx5_nl_ifindex(int nl, const char *name);
int mlx5_nl_switch_info(int nl, unsigned int ifindex,
struct mlx5_switch_info *info);
-/* mlx5_nl_flow.c */
-
-int mlx5_nl_flow_transpose(void *buf,
- size_t size,
- const struct mlx5_nl_flow_ptoi *ptoi,
- const struct rte_flow_attr *attr,
- const struct rte_flow_item *pattern,
- const struct rte_flow_action *actions,
- struct rte_flow_error *error);
-void mlx5_nl_flow_brand(void *buf, uint32_t handle);
-int mlx5_nl_flow_create(struct mnl_socket *nl, void *buf,
- struct rte_flow_error *error);
-int mlx5_nl_flow_destroy(struct mnl_socket *nl, void *buf,
- struct rte_flow_error *error);
-int mlx5_nl_flow_init(struct mnl_socket *nl, unsigned int ifindex,
- struct rte_flow_error *error);
-struct mnl_socket *mlx5_nl_flow_socket_create(void);
-void mlx5_nl_flow_socket_destroy(struct mnl_socket *nl);
-
#endif /* RTE_PMD_MLX5_H_ */
deleted file mode 100644
@@ -1,1228 +0,0 @@
-/* SPDX-License-Identifier: BSD-3-Clause
- * Copyright 2018 6WIND S.A.
- * Copyright 2018 Mellanox Technologies, Ltd
- */
-
-#include <assert.h>
-#include <errno.h>
-#include <libmnl/libmnl.h>
-#include <linux/if_ether.h>
-#include <linux/netlink.h>
-#include <linux/pkt_cls.h>
-#include <linux/pkt_sched.h>
-#include <linux/rtnetlink.h>
-#include <linux/tc_act/tc_gact.h>
-#include <linux/tc_act/tc_mirred.h>
-#include <netinet/in.h>
-#include <stdalign.h>
-#include <stdbool.h>
-#include <stddef.h>
-#include <stdint.h>
-#include <stdlib.h>
-#include <sys/socket.h>
-
-#include <rte_byteorder.h>
-#include <rte_errno.h>
-#include <rte_ether.h>
-#include <rte_flow.h>
-
-#include "mlx5.h"
-#include "mlx5_autoconf.h"
-
-#ifdef HAVE_TC_ACT_VLAN
-
-#include <linux/tc_act/tc_vlan.h>
-
-#else /* HAVE_TC_ACT_VLAN */
-
-#define TCA_VLAN_ACT_POP 1
-#define TCA_VLAN_ACT_PUSH 2
-#define TCA_VLAN_ACT_MODIFY 3
-#define TCA_VLAN_PARMS 2
-#define TCA_VLAN_PUSH_VLAN_ID 3
-#define TCA_VLAN_PUSH_VLAN_PROTOCOL 4
-#define TCA_VLAN_PAD 5
-#define TCA_VLAN_PUSH_VLAN_PRIORITY 6
-
-struct tc_vlan {
- tc_gen;
- int v_action;
-};
-
-#endif /* HAVE_TC_ACT_VLAN */
-
-/* Normally found in linux/netlink.h. */
-#ifndef NETLINK_CAP_ACK
-#define NETLINK_CAP_ACK 10
-#endif
-
-/* Normally found in linux/pkt_sched.h. */
-#ifndef TC_H_MIN_INGRESS
-#define TC_H_MIN_INGRESS 0xfff2u
-#endif
-
-/* Normally found in linux/pkt_cls.h. */
-#ifndef TCA_CLS_FLAGS_SKIP_SW
-#define TCA_CLS_FLAGS_SKIP_SW (1 << 1)
-#endif
-#ifndef HAVE_TCA_FLOWER_ACT
-#define TCA_FLOWER_ACT 3
-#endif
-#ifndef HAVE_TCA_FLOWER_FLAGS
-#define TCA_FLOWER_FLAGS 22
-#endif
-#ifndef HAVE_TCA_FLOWER_KEY_ETH_TYPE
-#define TCA_FLOWER_KEY_ETH_TYPE 8
-#endif
-#ifndef HAVE_TCA_FLOWER_KEY_ETH_DST
-#define TCA_FLOWER_KEY_ETH_DST 4
-#endif
-#ifndef HAVE_TCA_FLOWER_KEY_ETH_DST_MASK
-#define TCA_FLOWER_KEY_ETH_DST_MASK 5
-#endif
-#ifndef HAVE_TCA_FLOWER_KEY_ETH_SRC
-#define TCA_FLOWER_KEY_ETH_SRC 6
-#endif
-#ifndef HAVE_TCA_FLOWER_KEY_ETH_SRC_MASK
-#define TCA_FLOWER_KEY_ETH_SRC_MASK 7
-#endif
-#ifndef HAVE_TCA_FLOWER_KEY_IP_PROTO
-#define TCA_FLOWER_KEY_IP_PROTO 9
-#endif
-#ifndef HAVE_TCA_FLOWER_KEY_IPV4_SRC
-#define TCA_FLOWER_KEY_IPV4_SRC 10
-#endif
-#ifndef HAVE_TCA_FLOWER_KEY_IPV4_SRC_MASK
-#define TCA_FLOWER_KEY_IPV4_SRC_MASK 11
-#endif
-#ifndef HAVE_TCA_FLOWER_KEY_IPV4_DST
-#define TCA_FLOWER_KEY_IPV4_DST 12
-#endif
-#ifndef HAVE_TCA_FLOWER_KEY_IPV4_DST_MASK
-#define TCA_FLOWER_KEY_IPV4_DST_MASK 13
-#endif
-#ifndef HAVE_TCA_FLOWER_KEY_IPV6_SRC
-#define TCA_FLOWER_KEY_IPV6_SRC 14
-#endif
-#ifndef HAVE_TCA_FLOWER_KEY_IPV6_SRC_MASK
-#define TCA_FLOWER_KEY_IPV6_SRC_MASK 15
-#endif
-#ifndef HAVE_TCA_FLOWER_KEY_IPV6_DST
-#define TCA_FLOWER_KEY_IPV6_DST 16
-#endif
-#ifndef HAVE_TCA_FLOWER_KEY_IPV6_DST_MASK
-#define TCA_FLOWER_KEY_IPV6_DST_MASK 17
-#endif
-#ifndef HAVE_TCA_FLOWER_KEY_TCP_SRC
-#define TCA_FLOWER_KEY_TCP_SRC 18
-#endif
-#ifndef HAVE_TCA_FLOWER_KEY_TCP_SRC_MASK
-#define TCA_FLOWER_KEY_TCP_SRC_MASK 35
-#endif
-#ifndef HAVE_TCA_FLOWER_KEY_TCP_DST
-#define TCA_FLOWER_KEY_TCP_DST 19
-#endif
-#ifndef HAVE_TCA_FLOWER_KEY_TCP_DST_MASK
-#define TCA_FLOWER_KEY_TCP_DST_MASK 36
-#endif
-#ifndef HAVE_TCA_FLOWER_KEY_UDP_SRC
-#define TCA_FLOWER_KEY_UDP_SRC 20
-#endif
-#ifndef HAVE_TCA_FLOWER_KEY_UDP_SRC_MASK
-#define TCA_FLOWER_KEY_UDP_SRC_MASK 37
-#endif
-#ifndef HAVE_TCA_FLOWER_KEY_UDP_DST
-#define TCA_FLOWER_KEY_UDP_DST 21
-#endif
-#ifndef HAVE_TCA_FLOWER_KEY_UDP_DST_MASK
-#define TCA_FLOWER_KEY_UDP_DST_MASK 38
-#endif
-#ifndef HAVE_TCA_FLOWER_KEY_VLAN_ID
-#define TCA_FLOWER_KEY_VLAN_ID 23
-#endif
-#ifndef HAVE_TCA_FLOWER_KEY_VLAN_PRIO
-#define TCA_FLOWER_KEY_VLAN_PRIO 24
-#endif
-#ifndef HAVE_TCA_FLOWER_KEY_VLAN_ETH_TYPE
-#define TCA_FLOWER_KEY_VLAN_ETH_TYPE 25
-#endif
-
-/** Parser state definitions for mlx5_nl_flow_trans[]. */
-enum mlx5_nl_flow_trans {
- INVALID,
- BACK,
- ATTR,
- PATTERN,
- ITEM_VOID,
- ITEM_PORT_ID,
- ITEM_ETH,
- ITEM_VLAN,
- ITEM_IPV4,
- ITEM_IPV6,
- ITEM_TCP,
- ITEM_UDP,
- ACTIONS,
- ACTION_VOID,
- ACTION_PORT_ID,
- ACTION_DROP,
- ACTION_OF_POP_VLAN,
- ACTION_OF_PUSH_VLAN,
- ACTION_OF_SET_VLAN_VID,
- ACTION_OF_SET_VLAN_PCP,
- END,
-};
-
-#define TRANS(...) (const enum mlx5_nl_flow_trans []){ __VA_ARGS__, INVALID, }
-
-#define PATTERN_COMMON \
- ITEM_VOID, ITEM_PORT_ID, ACTIONS
-#define ACTIONS_COMMON \
- ACTION_VOID, ACTION_OF_POP_VLAN, ACTION_OF_PUSH_VLAN, \
- ACTION_OF_SET_VLAN_VID, ACTION_OF_SET_VLAN_PCP
-#define ACTIONS_FATE \
- ACTION_PORT_ID, ACTION_DROP
-
-/** Parser state transitions used by mlx5_nl_flow_transpose(). */
-static const enum mlx5_nl_flow_trans *const mlx5_nl_flow_trans[] = {
- [INVALID] = NULL,
- [BACK] = NULL,
- [ATTR] = TRANS(PATTERN),
- [PATTERN] = TRANS(ITEM_ETH, PATTERN_COMMON),
- [ITEM_VOID] = TRANS(BACK),
- [ITEM_PORT_ID] = TRANS(BACK),
- [ITEM_ETH] = TRANS(ITEM_IPV4, ITEM_IPV6, ITEM_VLAN, PATTERN_COMMON),
- [ITEM_VLAN] = TRANS(ITEM_IPV4, ITEM_IPV6, PATTERN_COMMON),
- [ITEM_IPV4] = TRANS(ITEM_TCP, ITEM_UDP, PATTERN_COMMON),
- [ITEM_IPV6] = TRANS(ITEM_TCP, ITEM_UDP, PATTERN_COMMON),
- [ITEM_TCP] = TRANS(PATTERN_COMMON),
- [ITEM_UDP] = TRANS(PATTERN_COMMON),
- [ACTIONS] = TRANS(ACTIONS_FATE, ACTIONS_COMMON),
- [ACTION_VOID] = TRANS(BACK),
- [ACTION_PORT_ID] = TRANS(ACTION_VOID, END),
- [ACTION_DROP] = TRANS(ACTION_VOID, END),
- [ACTION_OF_POP_VLAN] = TRANS(ACTIONS_FATE, ACTIONS_COMMON),
- [ACTION_OF_PUSH_VLAN] = TRANS(ACTIONS_FATE, ACTIONS_COMMON),
- [ACTION_OF_SET_VLAN_VID] = TRANS(ACTIONS_FATE, ACTIONS_COMMON),
- [ACTION_OF_SET_VLAN_PCP] = TRANS(ACTIONS_FATE, ACTIONS_COMMON),
- [END] = NULL,
-};
-
-/** Empty masks for known item types. */
-static const union {
- struct rte_flow_item_port_id port_id;
- struct rte_flow_item_eth eth;
- struct rte_flow_item_vlan vlan;
- struct rte_flow_item_ipv4 ipv4;
- struct rte_flow_item_ipv6 ipv6;
- struct rte_flow_item_tcp tcp;
- struct rte_flow_item_udp udp;
-} mlx5_nl_flow_mask_empty;
-
-/** Supported masks for known item types. */
-static const struct {
- struct rte_flow_item_port_id port_id;
- struct rte_flow_item_eth eth;
- struct rte_flow_item_vlan vlan;
- struct rte_flow_item_ipv4 ipv4;
- struct rte_flow_item_ipv6 ipv6;
- struct rte_flow_item_tcp tcp;
- struct rte_flow_item_udp udp;
-} mlx5_nl_flow_mask_supported = {
- .port_id = {
- .id = 0xffffffff,
- },
- .eth = {
- .type = RTE_BE16(0xffff),
- .dst.addr_bytes = "\xff\xff\xff\xff\xff\xff",
- .src.addr_bytes = "\xff\xff\xff\xff\xff\xff",
- },
- .vlan = {
- /* PCP and VID only, no DEI. */
- .tci = RTE_BE16(0xefff),
- .inner_type = RTE_BE16(0xffff),
- },
- .ipv4.hdr = {
- .next_proto_id = 0xff,
- .src_addr = RTE_BE32(0xffffffff),
- .dst_addr = RTE_BE32(0xffffffff),
- },
- .ipv6.hdr = {
- .proto = 0xff,
- .src_addr =
- "\xff\xff\xff\xff\xff\xff\xff\xff"
- "\xff\xff\xff\xff\xff\xff\xff\xff",
- .dst_addr =
- "\xff\xff\xff\xff\xff\xff\xff\xff"
- "\xff\xff\xff\xff\xff\xff\xff\xff",
- },
- .tcp.hdr = {
- .src_port = RTE_BE16(0xffff),
- .dst_port = RTE_BE16(0xffff),
- },
- .udp.hdr = {
- .src_port = RTE_BE16(0xffff),
- .dst_port = RTE_BE16(0xffff),
- },
-};
-
-/**
- * Retrieve mask for pattern item.
- *
- * This function does basic sanity checks on a pattern item in order to
- * return the most appropriate mask for it.
- *
- * @param[in] item
- * Item specification.
- * @param[in] mask_default
- * Default mask for pattern item as specified by the flow API.
- * @param[in] mask_supported
- * Mask fields supported by the implementation.
- * @param[in] mask_empty
- * Empty mask to return when there is no specification.
- * @param[out] error
- * Perform verbose error reporting if not NULL.
- *
- * @return
- * Either @p item->mask or one of the mask parameters on success, NULL
- * otherwise and rte_errno is set.
- */
-static const void *
-mlx5_nl_flow_item_mask(const struct rte_flow_item *item,
- const void *mask_default,
- const void *mask_supported,
- const void *mask_empty,
- size_t mask_size,
- struct rte_flow_error *error)
-{
- const uint8_t *mask;
- size_t i;
-
- /* item->last and item->mask cannot exist without item->spec. */
- if (!item->spec && (item->mask || item->last)) {
- rte_flow_error_set
- (error, EINVAL, RTE_FLOW_ERROR_TYPE_ITEM, item,
- "\"mask\" or \"last\" field provided without a"
- " corresponding \"spec\"");
- return NULL;
- }
- /* No spec, no mask, no problem. */
- if (!item->spec)
- return mask_empty;
- mask = item->mask ? item->mask : mask_default;
- assert(mask);
- /*
- * Single-pass check to make sure that:
- * - Mask is supported, no bits are set outside mask_supported.
- * - Both item->spec and item->last are included in mask.
- */
- for (i = 0; i != mask_size; ++i) {
- if (!mask[i])
- continue;
- if ((mask[i] | ((const uint8_t *)mask_supported)[i]) !=
- ((const uint8_t *)mask_supported)[i]) {
- rte_flow_error_set
- (error, ENOTSUP, RTE_FLOW_ERROR_TYPE_ITEM_MASK,
- mask, "unsupported field found in \"mask\"");
- return NULL;
- }
- if (item->last &&
- (((const uint8_t *)item->spec)[i] & mask[i]) !=
- (((const uint8_t *)item->last)[i] & mask[i])) {
- rte_flow_error_set
- (error, ENOTSUP, RTE_FLOW_ERROR_TYPE_ITEM_LAST,
- item->last,
- "range between \"spec\" and \"last\" not"
- " comprised in \"mask\"");
- return NULL;
- }
- }
- return mask;
-}
-
-/**
- * Transpose flow rule description to rtnetlink message.
- *
- * This function transposes a flow rule description to a traffic control
- * (TC) filter creation message ready to be sent over Netlink.
- *
- * Target interface is specified as the first entry of the @p ptoi table.
- * Subsequent entries enable this function to resolve other DPDK port IDs
- * found in the flow rule.
- *
- * @param[out] buf
- * Output message buffer. May be NULL when @p size is 0.
- * @param size
- * Size of @p buf. Message may be truncated if not large enough.
- * @param[in] ptoi
- * DPDK port ID to network interface index translation table. This table
- * is terminated by an entry with a zero ifindex value.
- * @param[in] attr
- * Flow rule attributes.
- * @param[in] pattern
- * Pattern specification.
- * @param[in] actions
- * Associated actions.
- * @param[out] error
- * Perform verbose error reporting if not NULL.
- *
- * @return
- * A positive value representing the exact size of the message in bytes
- * regardless of the @p size parameter on success, a negative errno value
- * otherwise and rte_errno is set.
- */
-int
-mlx5_nl_flow_transpose(void *buf,
- size_t size,
- const struct mlx5_nl_flow_ptoi *ptoi,
- const struct rte_flow_attr *attr,
- const struct rte_flow_item *pattern,
- const struct rte_flow_action *actions,
- struct rte_flow_error *error)
-{
- alignas(struct nlmsghdr)
- uint8_t buf_tmp[mnl_nlmsg_size(sizeof(struct tcmsg) + 1024)];
- const struct rte_flow_item *item;
- const struct rte_flow_action *action;
- unsigned int n;
- uint32_t act_index_cur;
- bool in_port_id_set;
- bool eth_type_set;
- bool vlan_present;
- bool vlan_eth_type_set;
- bool ip_proto_set;
- struct nlattr *na_flower;
- struct nlattr *na_flower_act;
- struct nlattr *na_vlan_id;
- struct nlattr *na_vlan_priority;
- const enum mlx5_nl_flow_trans *trans;
- const enum mlx5_nl_flow_trans *back;
-
- if (!size)
- goto error_nobufs;
-init:
- item = pattern;
- action = actions;
- n = 0;
- act_index_cur = 0;
- in_port_id_set = false;
- eth_type_set = false;
- vlan_present = false;
- vlan_eth_type_set = false;
- ip_proto_set = false;
- na_flower = NULL;
- na_flower_act = NULL;
- na_vlan_id = NULL;
- na_vlan_priority = NULL;
- trans = TRANS(ATTR);
- back = trans;
-trans:
- switch (trans[n++]) {
- union {
- const struct rte_flow_item_port_id *port_id;
- const struct rte_flow_item_eth *eth;
- const struct rte_flow_item_vlan *vlan;
- const struct rte_flow_item_ipv4 *ipv4;
- const struct rte_flow_item_ipv6 *ipv6;
- const struct rte_flow_item_tcp *tcp;
- const struct rte_flow_item_udp *udp;
- } spec, mask;
- union {
- const struct rte_flow_action_port_id *port_id;
- const struct rte_flow_action_of_push_vlan *of_push_vlan;
- const struct rte_flow_action_of_set_vlan_vid *
- of_set_vlan_vid;
- const struct rte_flow_action_of_set_vlan_pcp *
- of_set_vlan_pcp;
- } conf;
- struct nlmsghdr *nlh;
- struct tcmsg *tcm;
- struct nlattr *act_index;
- struct nlattr *act;
- unsigned int i;
-
- case INVALID:
- if (item->type)
- return rte_flow_error_set
- (error, ENOTSUP, RTE_FLOW_ERROR_TYPE_ITEM,
- item, "unsupported pattern item combination");
- else if (action->type)
- return rte_flow_error_set
- (error, ENOTSUP, RTE_FLOW_ERROR_TYPE_ACTION,
- action, "unsupported action combination");
- return rte_flow_error_set
- (error, ENOTSUP, RTE_FLOW_ERROR_TYPE_UNSPECIFIED, NULL,
- "flow rule lacks some kind of fate action");
- case BACK:
- trans = back;
- n = 0;
- goto trans;
- case ATTR:
- /*
- * Supported attributes: no groups, some priorities and
- * ingress only. Don't care about transfer as it is the
- * caller's problem.
- */
- if (attr->group)
- return rte_flow_error_set
- (error, ENOTSUP,
- RTE_FLOW_ERROR_TYPE_ATTR_GROUP,
- attr, "groups are not supported");
- if (attr->priority > 0xfffe)
- return rte_flow_error_set
- (error, ENOTSUP,
- RTE_FLOW_ERROR_TYPE_ATTR_PRIORITY,
- attr, "lowest priority level is 0xfffe");
- if (!attr->ingress)
- return rte_flow_error_set
- (error, ENOTSUP,
- RTE_FLOW_ERROR_TYPE_ATTR_INGRESS,
- attr, "only ingress is supported");
- if (attr->egress)
- return rte_flow_error_set
- (error, ENOTSUP,
- RTE_FLOW_ERROR_TYPE_ATTR_INGRESS,
- attr, "egress is not supported");
- if (size < mnl_nlmsg_size(sizeof(*tcm)))
- goto error_nobufs;
- nlh = mnl_nlmsg_put_header(buf);
- nlh->nlmsg_type = 0;
- nlh->nlmsg_flags = 0;
- nlh->nlmsg_seq = 0;
- tcm = mnl_nlmsg_put_extra_header(nlh, sizeof(*tcm));
- tcm->tcm_family = AF_UNSPEC;
- tcm->tcm_ifindex = ptoi[0].ifindex;
- /*
- * Let kernel pick a handle by default. A predictable handle
- * can be set by the caller on the resulting buffer through
- * mlx5_nl_flow_brand().
- */
- tcm->tcm_handle = 0;
- tcm->tcm_parent = TC_H_MAKE(TC_H_INGRESS, TC_H_MIN_INGRESS);
- /*
- * Priority cannot be zero to prevent the kernel from
- * picking one automatically.
- */
- tcm->tcm_info = TC_H_MAKE((attr->priority + 1) << 16,
- RTE_BE16(ETH_P_ALL));
- break;
- case PATTERN:
- if (!mnl_attr_put_strz_check(buf, size, TCA_KIND, "flower"))
- goto error_nobufs;
- na_flower = mnl_attr_nest_start_check(buf, size, TCA_OPTIONS);
- if (!na_flower)
- goto error_nobufs;
- if (!mnl_attr_put_u32_check(buf, size, TCA_FLOWER_FLAGS,
- TCA_CLS_FLAGS_SKIP_SW))
- goto error_nobufs;
- break;
- case ITEM_VOID:
- if (item->type != RTE_FLOW_ITEM_TYPE_VOID)
- goto trans;
- ++item;
- break;
- case ITEM_PORT_ID:
- if (item->type != RTE_FLOW_ITEM_TYPE_PORT_ID)
- goto trans;
- mask.port_id = mlx5_nl_flow_item_mask
- (item, &rte_flow_item_port_id_mask,
- &mlx5_nl_flow_mask_supported.port_id,
- &mlx5_nl_flow_mask_empty.port_id,
- sizeof(mlx5_nl_flow_mask_supported.port_id), error);
- if (!mask.port_id)
- return -rte_errno;
- if (mask.port_id == &mlx5_nl_flow_mask_empty.port_id) {
- in_port_id_set = 1;
- ++item;
- break;
- }
- spec.port_id = item->spec;
- if (mask.port_id->id && mask.port_id->id != 0xffffffff)
- return rte_flow_error_set
- (error, ENOTSUP, RTE_FLOW_ERROR_TYPE_ITEM_MASK,
- mask.port_id,
- "no support for partial mask on"
- " \"id\" field");
- if (!mask.port_id->id)
- i = 0;
- else
- for (i = 0; ptoi[i].ifindex; ++i)
- if (ptoi[i].port_id == spec.port_id->id)
- break;
- if (!ptoi[i].ifindex)
- return rte_flow_error_set
- (error, ENODEV, RTE_FLOW_ERROR_TYPE_ITEM_SPEC,
- spec.port_id,
- "missing data to convert port ID to ifindex");
- tcm = mnl_nlmsg_get_payload(buf);
- if (in_port_id_set &&
- ptoi[i].ifindex != (unsigned int)tcm->tcm_ifindex)
- return rte_flow_error_set
- (error, ENOTSUP, RTE_FLOW_ERROR_TYPE_ITEM_SPEC,
- spec.port_id,
- "cannot match traffic for several port IDs"
- " through a single flow rule");
- tcm->tcm_ifindex = ptoi[i].ifindex;
- in_port_id_set = 1;
- ++item;
- break;
- case ITEM_ETH:
- if (item->type != RTE_FLOW_ITEM_TYPE_ETH)
- goto trans;
- mask.eth = mlx5_nl_flow_item_mask
- (item, &rte_flow_item_eth_mask,
- &mlx5_nl_flow_mask_supported.eth,
- &mlx5_nl_flow_mask_empty.eth,
- sizeof(mlx5_nl_flow_mask_supported.eth), error);
- if (!mask.eth)
- return -rte_errno;
- if (mask.eth == &mlx5_nl_flow_mask_empty.eth) {
- ++item;
- break;
- }
- spec.eth = item->spec;
- if (mask.eth->type && mask.eth->type != RTE_BE16(0xffff))
- return rte_flow_error_set
- (error, ENOTSUP, RTE_FLOW_ERROR_TYPE_ITEM_MASK,
- mask.eth,
- "no support for partial mask on"
- " \"type\" field");
- if (mask.eth->type) {
- if (!mnl_attr_put_u16_check(buf, size,
- TCA_FLOWER_KEY_ETH_TYPE,
- spec.eth->type))
- goto error_nobufs;
- eth_type_set = 1;
- }
- if ((!is_zero_ether_addr(&mask.eth->dst) &&
- (!mnl_attr_put_check(buf, size,
- TCA_FLOWER_KEY_ETH_DST,
- ETHER_ADDR_LEN,
- spec.eth->dst.addr_bytes) ||
- !mnl_attr_put_check(buf, size,
- TCA_FLOWER_KEY_ETH_DST_MASK,
- ETHER_ADDR_LEN,
- mask.eth->dst.addr_bytes))) ||
- (!is_zero_ether_addr(&mask.eth->src) &&
- (!mnl_attr_put_check(buf, size,
- TCA_FLOWER_KEY_ETH_SRC,
- ETHER_ADDR_LEN,
- spec.eth->src.addr_bytes) ||
- !mnl_attr_put_check(buf, size,
- TCA_FLOWER_KEY_ETH_SRC_MASK,
- ETHER_ADDR_LEN,
- mask.eth->src.addr_bytes))))
- goto error_nobufs;
- ++item;
- break;
- case ITEM_VLAN:
- if (item->type != RTE_FLOW_ITEM_TYPE_VLAN)
- goto trans;
- mask.vlan = mlx5_nl_flow_item_mask
- (item, &rte_flow_item_vlan_mask,
- &mlx5_nl_flow_mask_supported.vlan,
- &mlx5_nl_flow_mask_empty.vlan,
- sizeof(mlx5_nl_flow_mask_supported.vlan), error);
- if (!mask.vlan)
- return -rte_errno;
- if (!eth_type_set &&
- !mnl_attr_put_u16_check(buf, size,
- TCA_FLOWER_KEY_ETH_TYPE,
- RTE_BE16(ETH_P_8021Q)))
- goto error_nobufs;
- eth_type_set = 1;
- vlan_present = 1;
- if (mask.vlan == &mlx5_nl_flow_mask_empty.vlan) {
- ++item;
- break;
- }
- spec.vlan = item->spec;
- if ((mask.vlan->tci & RTE_BE16(0xe000) &&
- (mask.vlan->tci & RTE_BE16(0xe000)) != RTE_BE16(0xe000)) ||
- (mask.vlan->tci & RTE_BE16(0x0fff) &&
- (mask.vlan->tci & RTE_BE16(0x0fff)) != RTE_BE16(0x0fff)) ||
- (mask.vlan->inner_type &&
- mask.vlan->inner_type != RTE_BE16(0xffff)))
- return rte_flow_error_set
- (error, ENOTSUP, RTE_FLOW_ERROR_TYPE_ITEM_MASK,
- mask.vlan,
- "no support for partial masks on"
- " \"tci\" (PCP and VID parts) and"
- " \"inner_type\" fields");
- if (mask.vlan->inner_type) {
- if (!mnl_attr_put_u16_check
- (buf, size, TCA_FLOWER_KEY_VLAN_ETH_TYPE,
- spec.vlan->inner_type))
- goto error_nobufs;
- vlan_eth_type_set = 1;
- }
- if ((mask.vlan->tci & RTE_BE16(0xe000) &&
- !mnl_attr_put_u8_check
- (buf, size, TCA_FLOWER_KEY_VLAN_PRIO,
- (rte_be_to_cpu_16(spec.vlan->tci) >> 13) & 0x7)) ||
- (mask.vlan->tci & RTE_BE16(0x0fff) &&
- !mnl_attr_put_u16_check
- (buf, size, TCA_FLOWER_KEY_VLAN_ID,
- rte_be_to_cpu_16(spec.vlan->tci & RTE_BE16(0x0fff)))))
- goto error_nobufs;
- ++item;
- break;
- case ITEM_IPV4:
- if (item->type != RTE_FLOW_ITEM_TYPE_IPV4)
- goto trans;
- mask.ipv4 = mlx5_nl_flow_item_mask
- (item, &rte_flow_item_ipv4_mask,
- &mlx5_nl_flow_mask_supported.ipv4,
- &mlx5_nl_flow_mask_empty.ipv4,
- sizeof(mlx5_nl_flow_mask_supported.ipv4), error);
- if (!mask.ipv4)
- return -rte_errno;
- if ((!eth_type_set || !vlan_eth_type_set) &&
- !mnl_attr_put_u16_check(buf, size,
- vlan_present ?
- TCA_FLOWER_KEY_VLAN_ETH_TYPE :
- TCA_FLOWER_KEY_ETH_TYPE,
- RTE_BE16(ETH_P_IP)))
- goto error_nobufs;
- eth_type_set = 1;
- vlan_eth_type_set = 1;
- if (mask.ipv4 == &mlx5_nl_flow_mask_empty.ipv4) {
- ++item;
- break;
- }
- spec.ipv4 = item->spec;
- if (mask.ipv4->hdr.next_proto_id &&
- mask.ipv4->hdr.next_proto_id != 0xff)
- return rte_flow_error_set
- (error, ENOTSUP, RTE_FLOW_ERROR_TYPE_ITEM_MASK,
- mask.ipv4,
- "no support for partial mask on"
- " \"hdr.next_proto_id\" field");
- if (mask.ipv4->hdr.next_proto_id) {
- if (!mnl_attr_put_u8_check
- (buf, size, TCA_FLOWER_KEY_IP_PROTO,
- spec.ipv4->hdr.next_proto_id))
- goto error_nobufs;
- ip_proto_set = 1;
- }
- if ((mask.ipv4->hdr.src_addr &&
- (!mnl_attr_put_u32_check(buf, size,
- TCA_FLOWER_KEY_IPV4_SRC,
- spec.ipv4->hdr.src_addr) ||
- !mnl_attr_put_u32_check(buf, size,
- TCA_FLOWER_KEY_IPV4_SRC_MASK,
- mask.ipv4->hdr.src_addr))) ||
- (mask.ipv4->hdr.dst_addr &&
- (!mnl_attr_put_u32_check(buf, size,
- TCA_FLOWER_KEY_IPV4_DST,
- spec.ipv4->hdr.dst_addr) ||
- !mnl_attr_put_u32_check(buf, size,
- TCA_FLOWER_KEY_IPV4_DST_MASK,
- mask.ipv4->hdr.dst_addr))))
- goto error_nobufs;
- ++item;
- break;
- case ITEM_IPV6:
- if (item->type != RTE_FLOW_ITEM_TYPE_IPV6)
- goto trans;
- mask.ipv6 = mlx5_nl_flow_item_mask
- (item, &rte_flow_item_ipv6_mask,
- &mlx5_nl_flow_mask_supported.ipv6,
- &mlx5_nl_flow_mask_empty.ipv6,
- sizeof(mlx5_nl_flow_mask_supported.ipv6), error);
- if (!mask.ipv6)
- return -rte_errno;
- if ((!eth_type_set || !vlan_eth_type_set) &&
- !mnl_attr_put_u16_check(buf, size,
- vlan_present ?
- TCA_FLOWER_KEY_VLAN_ETH_TYPE :
- TCA_FLOWER_KEY_ETH_TYPE,
- RTE_BE16(ETH_P_IPV6)))
- goto error_nobufs;
- eth_type_set = 1;
- vlan_eth_type_set = 1;
- if (mask.ipv6 == &mlx5_nl_flow_mask_empty.ipv6) {
- ++item;
- break;
- }
- spec.ipv6 = item->spec;
- if (mask.ipv6->hdr.proto && mask.ipv6->hdr.proto != 0xff)
- return rte_flow_error_set
- (error, ENOTSUP, RTE_FLOW_ERROR_TYPE_ITEM_MASK,
- mask.ipv6,
- "no support for partial mask on"
- " \"hdr.proto\" field");
- if (mask.ipv6->hdr.proto) {
- if (!mnl_attr_put_u8_check
- (buf, size, TCA_FLOWER_KEY_IP_PROTO,
- spec.ipv6->hdr.proto))
- goto error_nobufs;
- ip_proto_set = 1;
- }
- if ((!IN6_IS_ADDR_UNSPECIFIED(mask.ipv6->hdr.src_addr) &&
- (!mnl_attr_put_check(buf, size,
- TCA_FLOWER_KEY_IPV6_SRC,
- sizeof(spec.ipv6->hdr.src_addr),
- spec.ipv6->hdr.src_addr) ||
- !mnl_attr_put_check(buf, size,
- TCA_FLOWER_KEY_IPV6_SRC_MASK,
- sizeof(mask.ipv6->hdr.src_addr),
- mask.ipv6->hdr.src_addr))) ||
- (!IN6_IS_ADDR_UNSPECIFIED(mask.ipv6->hdr.dst_addr) &&
- (!mnl_attr_put_check(buf, size,
- TCA_FLOWER_KEY_IPV6_DST,
- sizeof(spec.ipv6->hdr.dst_addr),
- spec.ipv6->hdr.dst_addr) ||
- !mnl_attr_put_check(buf, size,
- TCA_FLOWER_KEY_IPV6_DST_MASK,
- sizeof(mask.ipv6->hdr.dst_addr),
- mask.ipv6->hdr.dst_addr))))
- goto error_nobufs;
- ++item;
- break;
- case ITEM_TCP:
- if (item->type != RTE_FLOW_ITEM_TYPE_TCP)
- goto trans;
- mask.tcp = mlx5_nl_flow_item_mask
- (item, &rte_flow_item_tcp_mask,
- &mlx5_nl_flow_mask_supported.tcp,
- &mlx5_nl_flow_mask_empty.tcp,
- sizeof(mlx5_nl_flow_mask_supported.tcp), error);
- if (!mask.tcp)
- return -rte_errno;
- if (!ip_proto_set &&
- !mnl_attr_put_u8_check(buf, size,
- TCA_FLOWER_KEY_IP_PROTO,
- IPPROTO_TCP))
- goto error_nobufs;
- if (mask.tcp == &mlx5_nl_flow_mask_empty.tcp) {
- ++item;
- break;
- }
- spec.tcp = item->spec;
- if ((mask.tcp->hdr.src_port &&
- (!mnl_attr_put_u16_check(buf, size,
- TCA_FLOWER_KEY_TCP_SRC,
- spec.tcp->hdr.src_port) ||
- !mnl_attr_put_u16_check(buf, size,
- TCA_FLOWER_KEY_TCP_SRC_MASK,
- mask.tcp->hdr.src_port))) ||
- (mask.tcp->hdr.dst_port &&
- (!mnl_attr_put_u16_check(buf, size,
- TCA_FLOWER_KEY_TCP_DST,
- spec.tcp->hdr.dst_port) ||
- !mnl_attr_put_u16_check(buf, size,
- TCA_FLOWER_KEY_TCP_DST_MASK,
- mask.tcp->hdr.dst_port))))
- goto error_nobufs;
- ++item;
- break;
- case ITEM_UDP:
- if (item->type != RTE_FLOW_ITEM_TYPE_UDP)
- goto trans;
- mask.udp = mlx5_nl_flow_item_mask
- (item, &rte_flow_item_udp_mask,
- &mlx5_nl_flow_mask_supported.udp,
- &mlx5_nl_flow_mask_empty.udp,
- sizeof(mlx5_nl_flow_mask_supported.udp), error);
- if (!mask.udp)
- return -rte_errno;
- if (!ip_proto_set &&
- !mnl_attr_put_u8_check(buf, size,
- TCA_FLOWER_KEY_IP_PROTO,
- IPPROTO_UDP))
- goto error_nobufs;
- if (mask.udp == &mlx5_nl_flow_mask_empty.udp) {
- ++item;
- break;
- }
- spec.udp = item->spec;
- if ((mask.udp->hdr.src_port &&
- (!mnl_attr_put_u16_check(buf, size,
- TCA_FLOWER_KEY_UDP_SRC,
- spec.udp->hdr.src_port) ||
- !mnl_attr_put_u16_check(buf, size,
- TCA_FLOWER_KEY_UDP_SRC_MASK,
- mask.udp->hdr.src_port))) ||
- (mask.udp->hdr.dst_port &&
- (!mnl_attr_put_u16_check(buf, size,
- TCA_FLOWER_KEY_UDP_DST,
- spec.udp->hdr.dst_port) ||
- !mnl_attr_put_u16_check(buf, size,
- TCA_FLOWER_KEY_UDP_DST_MASK,
- mask.udp->hdr.dst_port))))
- goto error_nobufs;
- ++item;
- break;
- case ACTIONS:
- if (item->type != RTE_FLOW_ITEM_TYPE_END)
- goto trans;
- assert(na_flower);
- assert(!na_flower_act);
- na_flower_act =
- mnl_attr_nest_start_check(buf, size, TCA_FLOWER_ACT);
- if (!na_flower_act)
- goto error_nobufs;
- act_index_cur = 1;
- break;
- case ACTION_VOID:
- if (action->type != RTE_FLOW_ACTION_TYPE_VOID)
- goto trans;
- ++action;
- break;
- case ACTION_PORT_ID:
- if (action->type != RTE_FLOW_ACTION_TYPE_PORT_ID)
- goto trans;
- conf.port_id = action->conf;
- if (conf.port_id->original)
- i = 0;
- else
- for (i = 0; ptoi[i].ifindex; ++i)
- if (ptoi[i].port_id == conf.port_id->id)
- break;
- if (!ptoi[i].ifindex)
- return rte_flow_error_set
- (error, ENODEV, RTE_FLOW_ERROR_TYPE_ACTION_CONF,
- conf.port_id,
- "missing data to convert port ID to ifindex");
- act_index =
- mnl_attr_nest_start_check(buf, size, act_index_cur++);
- if (!act_index ||
- !mnl_attr_put_strz_check(buf, size, TCA_ACT_KIND, "mirred"))
- goto error_nobufs;
- act = mnl_attr_nest_start_check(buf, size, TCA_ACT_OPTIONS);
- if (!act)
- goto error_nobufs;
- if (!mnl_attr_put_check(buf, size, TCA_MIRRED_PARMS,
- sizeof(struct tc_mirred),
- &(struct tc_mirred){
- .action = TC_ACT_STOLEN,
- .eaction = TCA_EGRESS_REDIR,
- .ifindex = ptoi[i].ifindex,
- }))
- goto error_nobufs;
- mnl_attr_nest_end(buf, act);
- mnl_attr_nest_end(buf, act_index);
- ++action;
- break;
- case ACTION_DROP:
- if (action->type != RTE_FLOW_ACTION_TYPE_DROP)
- goto trans;
- act_index =
- mnl_attr_nest_start_check(buf, size, act_index_cur++);
- if (!act_index ||
- !mnl_attr_put_strz_check(buf, size, TCA_ACT_KIND, "gact"))
- goto error_nobufs;
- act = mnl_attr_nest_start_check(buf, size, TCA_ACT_OPTIONS);
- if (!act)
- goto error_nobufs;
- if (!mnl_attr_put_check(buf, size, TCA_GACT_PARMS,
- sizeof(struct tc_gact),
- &(struct tc_gact){
- .action = TC_ACT_SHOT,
- }))
- goto error_nobufs;
- mnl_attr_nest_end(buf, act);
- mnl_attr_nest_end(buf, act_index);
- ++action;
- break;
- case ACTION_OF_POP_VLAN:
- if (action->type != RTE_FLOW_ACTION_TYPE_OF_POP_VLAN)
- goto trans;
- conf.of_push_vlan = NULL;
- i = TCA_VLAN_ACT_POP;
- goto action_of_vlan;
- case ACTION_OF_PUSH_VLAN:
- if (action->type != RTE_FLOW_ACTION_TYPE_OF_PUSH_VLAN)
- goto trans;
- conf.of_push_vlan = action->conf;
- i = TCA_VLAN_ACT_PUSH;
- goto action_of_vlan;
- case ACTION_OF_SET_VLAN_VID:
- if (action->type != RTE_FLOW_ACTION_TYPE_OF_SET_VLAN_VID)
- goto trans;
- conf.of_set_vlan_vid = action->conf;
- if (na_vlan_id)
- goto override_na_vlan_id;
- i = TCA_VLAN_ACT_MODIFY;
- goto action_of_vlan;
- case ACTION_OF_SET_VLAN_PCP:
- if (action->type != RTE_FLOW_ACTION_TYPE_OF_SET_VLAN_PCP)
- goto trans;
- conf.of_set_vlan_pcp = action->conf;
- if (na_vlan_priority)
- goto override_na_vlan_priority;
- i = TCA_VLAN_ACT_MODIFY;
- goto action_of_vlan;
-action_of_vlan:
- act_index =
- mnl_attr_nest_start_check(buf, size, act_index_cur++);
- if (!act_index ||
- !mnl_attr_put_strz_check(buf, size, TCA_ACT_KIND, "vlan"))
- goto error_nobufs;
- act = mnl_attr_nest_start_check(buf, size, TCA_ACT_OPTIONS);
- if (!act)
- goto error_nobufs;
- if (!mnl_attr_put_check(buf, size, TCA_VLAN_PARMS,
- sizeof(struct tc_vlan),
- &(struct tc_vlan){
- .action = TC_ACT_PIPE,
- .v_action = i,
- }))
- goto error_nobufs;
- if (i == TCA_VLAN_ACT_POP) {
- mnl_attr_nest_end(buf, act);
- mnl_attr_nest_end(buf, act_index);
- ++action;
- break;
- }
- if (i == TCA_VLAN_ACT_PUSH &&
- !mnl_attr_put_u16_check(buf, size,
- TCA_VLAN_PUSH_VLAN_PROTOCOL,
- conf.of_push_vlan->ethertype))
- goto error_nobufs;
- na_vlan_id = mnl_nlmsg_get_payload_tail(buf);
- if (!mnl_attr_put_u16_check(buf, size, TCA_VLAN_PAD, 0))
- goto error_nobufs;
- na_vlan_priority = mnl_nlmsg_get_payload_tail(buf);
- if (!mnl_attr_put_u8_check(buf, size, TCA_VLAN_PAD, 0))
- goto error_nobufs;
- mnl_attr_nest_end(buf, act);
- mnl_attr_nest_end(buf, act_index);
- if (action->type == RTE_FLOW_ACTION_TYPE_OF_SET_VLAN_VID) {
-override_na_vlan_id:
- na_vlan_id->nla_type = TCA_VLAN_PUSH_VLAN_ID;
- *(uint16_t *)mnl_attr_get_payload(na_vlan_id) =
- rte_be_to_cpu_16
- (conf.of_set_vlan_vid->vlan_vid);
- } else if (action->type ==
- RTE_FLOW_ACTION_TYPE_OF_SET_VLAN_PCP) {
-override_na_vlan_priority:
- na_vlan_priority->nla_type =
- TCA_VLAN_PUSH_VLAN_PRIORITY;
- *(uint8_t *)mnl_attr_get_payload(na_vlan_priority) =
- conf.of_set_vlan_pcp->vlan_pcp;
- }
- ++action;
- break;
- case END:
- if (item->type != RTE_FLOW_ITEM_TYPE_END ||
- action->type != RTE_FLOW_ACTION_TYPE_END)
- goto trans;
- if (na_flower_act)
- mnl_attr_nest_end(buf, na_flower_act);
- if (na_flower)
- mnl_attr_nest_end(buf, na_flower);
- nlh = buf;
- return nlh->nlmsg_len;
- }
- back = trans;
- trans = mlx5_nl_flow_trans[trans[n - 1]];
- n = 0;
- goto trans;
-error_nobufs:
- if (buf != buf_tmp) {
- buf = buf_tmp;
- size = sizeof(buf_tmp);
- goto init;
- }
- return rte_flow_error_set
- (error, ENOBUFS, RTE_FLOW_ERROR_TYPE_UNSPECIFIED, NULL,
- "generated TC message is too large");
-}
-
-/**
- * Brand rtnetlink buffer with unique handle.
- *
- * This handle should be unique for a given network interface to avoid
- * collisions.
- *
- * @param buf
- * Flow rule buffer previously initialized by mlx5_nl_flow_transpose().
- * @param handle
- * Unique 32-bit handle to use.
- */
-void
-mlx5_nl_flow_brand(void *buf, uint32_t handle)
-{
- struct tcmsg *tcm = mnl_nlmsg_get_payload(buf);
-
- tcm->tcm_handle = handle;
-}
-
-/**
- * Send Netlink message with acknowledgment.
- *
- * @param nl
- * Libmnl socket to use.
- * @param nlh
- * Message to send. This function always raises the NLM_F_ACK flag before
- * sending.
- *
- * @return
- * 0 on success, a negative errno value otherwise and rte_errno is set.
- */
-static int
-mlx5_nl_flow_nl_ack(struct mnl_socket *nl, struct nlmsghdr *nlh)
-{
- alignas(struct nlmsghdr)
- uint8_t ans[mnl_nlmsg_size(sizeof(struct nlmsgerr)) +
- nlh->nlmsg_len - sizeof(*nlh)];
- uint32_t seq = random();
- int ret;
-
- nlh->nlmsg_flags |= NLM_F_ACK;
- nlh->nlmsg_seq = seq;
- ret = mnl_socket_sendto(nl, nlh, nlh->nlmsg_len);
- if (ret != -1)
- ret = mnl_socket_recvfrom(nl, ans, sizeof(ans));
- if (ret != -1)
- ret = mnl_cb_run
- (ans, ret, seq, mnl_socket_get_portid(nl), NULL, NULL);
- if (!ret)
- return 0;
- rte_errno = errno;
- return -rte_errno;
-}
-
-/**
- * Create a Netlink flow rule.
- *
- * @param nl
- * Libmnl socket to use.
- * @param buf
- * Flow rule buffer previously initialized by mlx5_nl_flow_transpose().
- * @param[out] error
- * Perform verbose error reporting if not NULL.
- *
- * @return
- * 0 on success, a negative errno value otherwise and rte_errno is set.
- */
-int
-mlx5_nl_flow_create(struct mnl_socket *nl, void *buf,
- struct rte_flow_error *error)
-{
- struct nlmsghdr *nlh = buf;
-
- nlh->nlmsg_type = RTM_NEWTFILTER;
- nlh->nlmsg_flags = NLM_F_REQUEST | NLM_F_CREATE | NLM_F_EXCL;
- if (!mlx5_nl_flow_nl_ack(nl, nlh))
- return 0;
- return rte_flow_error_set
- (error, rte_errno, RTE_FLOW_ERROR_TYPE_UNSPECIFIED, NULL,
- "netlink: failed to create TC flow rule");
-}
-
-/**
- * Destroy a Netlink flow rule.
- *
- * @param nl
- * Libmnl socket to use.
- * @param buf
- * Flow rule buffer previously initialized by mlx5_nl_flow_transpose().
- * @param[out] error
- * Perform verbose error reporting if not NULL.
- *
- * @return
- * 0 on success, a negative errno value otherwise and rte_errno is set.
- */
-int
-mlx5_nl_flow_destroy(struct mnl_socket *nl, void *buf,
- struct rte_flow_error *error)
-{
- struct nlmsghdr *nlh = buf;
-
- nlh->nlmsg_type = RTM_DELTFILTER;
- nlh->nlmsg_flags = NLM_F_REQUEST;
- if (!mlx5_nl_flow_nl_ack(nl, nlh))
- return 0;
- return rte_flow_error_set
- (error, errno, RTE_FLOW_ERROR_TYPE_UNSPECIFIED, NULL,
- "netlink: failed to destroy TC flow rule");
-}
-
-/**
- * Initialize ingress qdisc of a given network interface.
- *
- * @param nl
- * Libmnl socket of the @p NETLINK_ROUTE kind.
- * @param ifindex
- * Index of network interface to initialize.
- * @param[out] error
- * Perform verbose error reporting if not NULL.
- *
- * @return
- * 0 on success, a negative errno value otherwise and rte_errno is set.
- */
-int
-mlx5_nl_flow_init(struct mnl_socket *nl, unsigned int ifindex,
- struct rte_flow_error *error)
-{
- struct nlmsghdr *nlh;
- struct tcmsg *tcm;
- alignas(struct nlmsghdr)
- uint8_t buf[mnl_nlmsg_size(sizeof(*tcm) + 128)];
-
- /* Destroy existing ingress qdisc and everything attached to it. */
- nlh = mnl_nlmsg_put_header(buf);
- nlh->nlmsg_type = RTM_DELQDISC;
- nlh->nlmsg_flags = NLM_F_REQUEST;
- tcm = mnl_nlmsg_put_extra_header(nlh, sizeof(*tcm));
- tcm->tcm_family = AF_UNSPEC;
- tcm->tcm_ifindex = ifindex;
- tcm->tcm_handle = TC_H_MAKE(TC_H_INGRESS, 0);
- tcm->tcm_parent = TC_H_INGRESS;
- /* Ignore errors when qdisc is already absent. */
- if (mlx5_nl_flow_nl_ack(nl, nlh) &&
- rte_errno != EINVAL && rte_errno != ENOENT)
- return rte_flow_error_set
- (error, rte_errno, RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
- NULL, "netlink: failed to remove ingress qdisc");
- /* Create fresh ingress qdisc. */
- nlh = mnl_nlmsg_put_header(buf);
- nlh->nlmsg_type = RTM_NEWQDISC;
- nlh->nlmsg_flags = NLM_F_REQUEST | NLM_F_CREATE | NLM_F_EXCL;
- tcm = mnl_nlmsg_put_extra_header(nlh, sizeof(*tcm));
- tcm->tcm_family = AF_UNSPEC;
- tcm->tcm_ifindex = ifindex;
- tcm->tcm_handle = TC_H_MAKE(TC_H_INGRESS, 0);
- tcm->tcm_parent = TC_H_INGRESS;
- mnl_attr_put_strz_check(nlh, sizeof(buf), TCA_KIND, "ingress");
- if (mlx5_nl_flow_nl_ack(nl, nlh))
- return rte_flow_error_set
- (error, rte_errno, RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
- NULL, "netlink: failed to create ingress qdisc");
- return 0;
-}
-
-/**
- * Create and configure a libmnl socket for Netlink flow rules.
- *
- * @return
- * A valid libmnl socket object pointer on success, NULL otherwise and
- * rte_errno is set.
- */
-struct mnl_socket *
-mlx5_nl_flow_socket_create(void)
-{
- struct mnl_socket *nl = mnl_socket_open(NETLINK_ROUTE);
-
- if (nl) {
- mnl_socket_setsockopt(nl, NETLINK_CAP_ACK, &(int){ 1 },
- sizeof(int));
- if (!mnl_socket_bind(nl, 0, MNL_SOCKET_AUTOPID))
- return nl;
- }
- rte_errno = errno;
- if (nl)
- mnl_socket_close(nl);
- return NULL;
-}
-
-/**
- * Destroy a libmnl socket.
- */
-void
-mlx5_nl_flow_socket_destroy(struct mnl_socket *nl)
-{
- mnl_socket_close(nl);
-}