From a93ff62a8938fd74711a6a96044d2dde78ce799b Mon Sep 17 00:00:00 2001 From: Konstantin Ananyev Date: Thu, 10 May 2018 11:23:07 +0100 Subject: [PATCH] bpf: introduce basic Rx/Tx filters Introduce API to install BPF based filters on ethdev RX/TX path. Current implementation is pure SW one, based on ethdev RX/TX callback mechanism. Signed-off-by: Konstantin Ananyev Acked-by: Ferruh Yigit --- doc/guides/rel_notes/release_18_05.rst | 2 + lib/librte_bpf/Makefile | 2 + lib/librte_bpf/bpf_pkt.c | 605 +++++++++++++++++++++++++ lib/librte_bpf/meson.build | 6 +- lib/librte_bpf/rte_bpf_ethdev.h | 112 +++++ lib/librte_bpf/rte_bpf_version.map | 4 + 6 files changed, 729 insertions(+), 2 deletions(-) create mode 100644 lib/librte_bpf/bpf_pkt.c create mode 100644 lib/librte_bpf/rte_bpf_ethdev.h diff --git a/doc/guides/rel_notes/release_18_05.rst b/doc/guides/rel_notes/release_18_05.rst index 01887564b9..846cf186fb 100644 --- a/doc/guides/rel_notes/release_18_05.rst +++ b/doc/guides/rel_notes/release_18_05.rst @@ -226,6 +226,8 @@ New Features The BPF Library provides the ability to load and execute Enhanced Berkeley Packet Filter (eBPF) within user-space dpdk application. + Also it introduces basic framework to load/unload BPF-based filters + on eth devices (right now only via SW RX/TX callbacks). It also adds dependency on libelf. diff --git a/lib/librte_bpf/Makefile b/lib/librte_bpf/Makefile index 7a9e00cf30..c0e8aaa68c 100644 --- a/lib/librte_bpf/Makefile +++ b/lib/librte_bpf/Makefile @@ -24,6 +24,7 @@ LIBABIVER := 1 SRCS-$(CONFIG_RTE_LIBRTE_BPF) += bpf.c SRCS-$(CONFIG_RTE_LIBRTE_BPF) += bpf_exec.c SRCS-$(CONFIG_RTE_LIBRTE_BPF) += bpf_load.c +SRCS-$(CONFIG_RTE_LIBRTE_BPF) += bpf_pkt.c SRCS-$(CONFIG_RTE_LIBRTE_BPF) += bpf_validate.c ifeq ($(CONFIG_RTE_LIBRTE_BPF_ELF),y) SRCS-$(CONFIG_RTE_LIBRTE_BPF) += bpf_load_elf.c @@ -35,5 +36,6 @@ endif # install header files SYMLINK-$(CONFIG_RTE_LIBRTE_BPF)-include += bpf_def.h SYMLINK-$(CONFIG_RTE_LIBRTE_BPF)-include += rte_bpf.h +SYMLINK-$(CONFIG_RTE_LIBRTE_BPF)-include += rte_bpf_ethdev.h include $(RTE_SDK)/mk/rte.lib.mk diff --git a/lib/librte_bpf/bpf_pkt.c b/lib/librte_bpf/bpf_pkt.c new file mode 100644 index 0000000000..ab9daa528a --- /dev/null +++ b/lib/librte_bpf/bpf_pkt.c @@ -0,0 +1,605 @@ +/* SPDX-License-Identifier: BSD-3-Clause + * Copyright(c) 2018 Intel Corporation + */ + +#include +#include +#include +#include +#include +#include +#include + +#include +#include +#include +#include + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include +#include "bpf_impl.h" + +/* + * information about installed BPF rx/tx callback + */ + +struct bpf_eth_cbi { + /* used by both data & control path */ + uint32_t use; /*usage counter */ + const struct rte_eth_rxtx_callback *cb; /* callback handle */ + struct rte_bpf *bpf; + struct rte_bpf_jit jit; + /* used by control path only */ + LIST_ENTRY(bpf_eth_cbi) link; + uint16_t port; + uint16_t queue; +} __rte_cache_aligned; + +/* + * Odd number means that callback is used by datapath. + * Even number means that callback is not used by datapath. + */ +#define BPF_ETH_CBI_INUSE 1 + +/* + * List to manage RX/TX installed callbacks. + */ +LIST_HEAD(bpf_eth_cbi_list, bpf_eth_cbi); + +enum { + BPF_ETH_RX, + BPF_ETH_TX, + BPF_ETH_NUM, +}; + +/* + * information about all installed BPF rx/tx callbacks + */ +struct bpf_eth_cbh { + rte_spinlock_t lock; + struct bpf_eth_cbi_list list; + uint32_t type; +}; + +static struct bpf_eth_cbh rx_cbh = { + .lock = RTE_SPINLOCK_INITIALIZER, + .list = LIST_HEAD_INITIALIZER(list), + .type = BPF_ETH_RX, +}; + +static struct bpf_eth_cbh tx_cbh = { + .lock = RTE_SPINLOCK_INITIALIZER, + .list = LIST_HEAD_INITIALIZER(list), + .type = BPF_ETH_TX, +}; + +/* + * Marks given callback as used by datapath. + */ +static __rte_always_inline void +bpf_eth_cbi_inuse(struct bpf_eth_cbi *cbi) +{ + cbi->use++; + /* make sure no store/load reordering could happen */ + rte_smp_mb(); +} + +/* + * Marks given callback list as not used by datapath. + */ +static __rte_always_inline void +bpf_eth_cbi_unuse(struct bpf_eth_cbi *cbi) +{ + /* make sure all previous loads are completed */ + rte_smp_rmb(); + cbi->use++; +} + +/* + * Waits till datapath finished using given callback. + */ +static void +bpf_eth_cbi_wait(const struct bpf_eth_cbi *cbi) +{ + uint32_t nuse, puse; + + /* make sure all previous loads and stores are completed */ + rte_smp_mb(); + + puse = cbi->use; + + /* in use, busy wait till current RX/TX iteration is finished */ + if ((puse & BPF_ETH_CBI_INUSE) != 0) { + do { + rte_pause(); + rte_compiler_barrier(); + nuse = cbi->use; + } while (nuse == puse); + } +} + +static void +bpf_eth_cbi_cleanup(struct bpf_eth_cbi *bc) +{ + bc->bpf = NULL; + memset(&bc->jit, 0, sizeof(bc->jit)); +} + +static struct bpf_eth_cbi * +bpf_eth_cbh_find(struct bpf_eth_cbh *cbh, uint16_t port, uint16_t queue) +{ + struct bpf_eth_cbi *cbi; + + LIST_FOREACH(cbi, &cbh->list, link) { + if (cbi->port == port && cbi->queue == queue) + break; + } + return cbi; +} + +static struct bpf_eth_cbi * +bpf_eth_cbh_add(struct bpf_eth_cbh *cbh, uint16_t port, uint16_t queue) +{ + struct bpf_eth_cbi *cbi; + + /* return an existing one */ + cbi = bpf_eth_cbh_find(cbh, port, queue); + if (cbi != NULL) + return cbi; + + cbi = rte_zmalloc(NULL, sizeof(*cbi), RTE_CACHE_LINE_SIZE); + if (cbi != NULL) { + cbi->port = port; + cbi->queue = queue; + LIST_INSERT_HEAD(&cbh->list, cbi, link); + } + return cbi; +} + +/* + * BPF packet processing routinies. + */ + +static inline uint32_t +apply_filter(struct rte_mbuf *mb[], const uint64_t rc[], uint32_t num, + uint32_t drop) +{ + uint32_t i, j, k; + struct rte_mbuf *dr[num]; + + for (i = 0, j = 0, k = 0; i != num; i++) { + + /* filter matches */ + if (rc[i] != 0) + mb[j++] = mb[i]; + /* no match */ + else + dr[k++] = mb[i]; + } + + if (drop != 0) { + /* free filtered out mbufs */ + for (i = 0; i != k; i++) + rte_pktmbuf_free(dr[i]); + } else { + /* copy filtered out mbufs beyond good ones */ + for (i = 0; i != k; i++) + mb[j + i] = dr[i]; + } + + return j; +} + +static inline uint32_t +pkt_filter_vm(const struct rte_bpf *bpf, struct rte_mbuf *mb[], uint32_t num, + uint32_t drop) +{ + uint32_t i; + void *dp[num]; + uint64_t rc[num]; + + for (i = 0; i != num; i++) + dp[i] = rte_pktmbuf_mtod(mb[i], void *); + + rte_bpf_exec_burst(bpf, dp, rc, num); + return apply_filter(mb, rc, num, drop); +} + +static inline uint32_t +pkt_filter_jit(const struct rte_bpf_jit *jit, struct rte_mbuf *mb[], + uint32_t num, uint32_t drop) +{ + uint32_t i, n; + void *dp; + uint64_t rc[num]; + + n = 0; + for (i = 0; i != num; i++) { + dp = rte_pktmbuf_mtod(mb[i], void *); + rc[i] = jit->func(dp); + n += (rc[i] == 0); + } + + if (n != 0) + num = apply_filter(mb, rc, num, drop); + + return num; +} + +static inline uint32_t +pkt_filter_mb_vm(const struct rte_bpf *bpf, struct rte_mbuf *mb[], uint32_t num, + uint32_t drop) +{ + uint64_t rc[num]; + + rte_bpf_exec_burst(bpf, (void **)mb, rc, num); + return apply_filter(mb, rc, num, drop); +} + +static inline uint32_t +pkt_filter_mb_jit(const struct rte_bpf_jit *jit, struct rte_mbuf *mb[], + uint32_t num, uint32_t drop) +{ + uint32_t i, n; + uint64_t rc[num]; + + n = 0; + for (i = 0; i != num; i++) { + rc[i] = jit->func(mb[i]); + n += (rc[i] == 0); + } + + if (n != 0) + num = apply_filter(mb, rc, num, drop); + + return num; +} + +/* + * RX/TX callbacks for raw data bpf. + */ + +static uint16_t +bpf_rx_callback_vm(__rte_unused uint16_t port, __rte_unused uint16_t queue, + struct rte_mbuf *pkt[], uint16_t nb_pkts, + __rte_unused uint16_t max_pkts, void *user_param) +{ + struct bpf_eth_cbi *cbi; + uint16_t rc; + + cbi = user_param; + + bpf_eth_cbi_inuse(cbi); + rc = (cbi->cb != NULL) ? + pkt_filter_vm(cbi->bpf, pkt, nb_pkts, 1) : + nb_pkts; + bpf_eth_cbi_unuse(cbi); + return rc; +} + +static uint16_t +bpf_rx_callback_jit(__rte_unused uint16_t port, __rte_unused uint16_t queue, + struct rte_mbuf *pkt[], uint16_t nb_pkts, + __rte_unused uint16_t max_pkts, void *user_param) +{ + struct bpf_eth_cbi *cbi; + uint16_t rc; + + cbi = user_param; + bpf_eth_cbi_inuse(cbi); + rc = (cbi->cb != NULL) ? + pkt_filter_jit(&cbi->jit, pkt, nb_pkts, 1) : + nb_pkts; + bpf_eth_cbi_unuse(cbi); + return rc; +} + +static uint16_t +bpf_tx_callback_vm(__rte_unused uint16_t port, __rte_unused uint16_t queue, + struct rte_mbuf *pkt[], uint16_t nb_pkts, void *user_param) +{ + struct bpf_eth_cbi *cbi; + uint16_t rc; + + cbi = user_param; + bpf_eth_cbi_inuse(cbi); + rc = (cbi->cb != NULL) ? + pkt_filter_vm(cbi->bpf, pkt, nb_pkts, 0) : + nb_pkts; + bpf_eth_cbi_unuse(cbi); + return rc; +} + +static uint16_t +bpf_tx_callback_jit(__rte_unused uint16_t port, __rte_unused uint16_t queue, + struct rte_mbuf *pkt[], uint16_t nb_pkts, void *user_param) +{ + struct bpf_eth_cbi *cbi; + uint16_t rc; + + cbi = user_param; + bpf_eth_cbi_inuse(cbi); + rc = (cbi->cb != NULL) ? + pkt_filter_jit(&cbi->jit, pkt, nb_pkts, 0) : + nb_pkts; + bpf_eth_cbi_unuse(cbi); + return rc; +} + +/* + * RX/TX callbacks for mbuf. + */ + +static uint16_t +bpf_rx_callback_mb_vm(__rte_unused uint16_t port, __rte_unused uint16_t queue, + struct rte_mbuf *pkt[], uint16_t nb_pkts, + __rte_unused uint16_t max_pkts, void *user_param) +{ + struct bpf_eth_cbi *cbi; + uint16_t rc; + + cbi = user_param; + bpf_eth_cbi_inuse(cbi); + rc = (cbi->cb != NULL) ? + pkt_filter_mb_vm(cbi->bpf, pkt, nb_pkts, 1) : + nb_pkts; + bpf_eth_cbi_unuse(cbi); + return rc; +} + +static uint16_t +bpf_rx_callback_mb_jit(__rte_unused uint16_t port, __rte_unused uint16_t queue, + struct rte_mbuf *pkt[], uint16_t nb_pkts, + __rte_unused uint16_t max_pkts, void *user_param) +{ + struct bpf_eth_cbi *cbi; + uint16_t rc; + + cbi = user_param; + bpf_eth_cbi_inuse(cbi); + rc = (cbi->cb != NULL) ? + pkt_filter_mb_jit(&cbi->jit, pkt, nb_pkts, 1) : + nb_pkts; + bpf_eth_cbi_unuse(cbi); + return rc; +} + +static uint16_t +bpf_tx_callback_mb_vm(__rte_unused uint16_t port, __rte_unused uint16_t queue, + struct rte_mbuf *pkt[], uint16_t nb_pkts, void *user_param) +{ + struct bpf_eth_cbi *cbi; + uint16_t rc; + + cbi = user_param; + bpf_eth_cbi_inuse(cbi); + rc = (cbi->cb != NULL) ? + pkt_filter_mb_vm(cbi->bpf, pkt, nb_pkts, 0) : + nb_pkts; + bpf_eth_cbi_unuse(cbi); + return rc; +} + +static uint16_t +bpf_tx_callback_mb_jit(__rte_unused uint16_t port, __rte_unused uint16_t queue, + struct rte_mbuf *pkt[], uint16_t nb_pkts, void *user_param) +{ + struct bpf_eth_cbi *cbi; + uint16_t rc; + + cbi = user_param; + bpf_eth_cbi_inuse(cbi); + rc = (cbi->cb != NULL) ? + pkt_filter_mb_jit(&cbi->jit, pkt, nb_pkts, 0) : + nb_pkts; + bpf_eth_cbi_unuse(cbi); + return rc; +} + +static rte_rx_callback_fn +select_rx_callback(enum rte_bpf_arg_type type, uint32_t flags) +{ + if (flags & RTE_BPF_ETH_F_JIT) { + if (type == RTE_BPF_ARG_PTR) + return bpf_rx_callback_jit; + else if (type == RTE_BPF_ARG_PTR_MBUF) + return bpf_rx_callback_mb_jit; + } else if (type == RTE_BPF_ARG_PTR) + return bpf_rx_callback_vm; + else if (type == RTE_BPF_ARG_PTR_MBUF) + return bpf_rx_callback_mb_vm; + + return NULL; +} + +static rte_tx_callback_fn +select_tx_callback(enum rte_bpf_arg_type type, uint32_t flags) +{ + if (flags & RTE_BPF_ETH_F_JIT) { + if (type == RTE_BPF_ARG_PTR) + return bpf_tx_callback_jit; + else if (type == RTE_BPF_ARG_PTR_MBUF) + return bpf_tx_callback_mb_jit; + } else if (type == RTE_BPF_ARG_PTR) + return bpf_tx_callback_vm; + else if (type == RTE_BPF_ARG_PTR_MBUF) + return bpf_tx_callback_mb_vm; + + return NULL; +} + +/* + * helper function to perform BPF unload for given port/queue. + * have to introduce extra complexity (and possible slowdown) here, + * as right now there is no safe generic way to remove RX/TX callback + * while IO is active. + * Still don't free memory allocated for callback handle itself, + * again right now there is no safe way to do that without stopping RX/TX + * on given port/queue first. + */ +static void +bpf_eth_cbi_unload(struct bpf_eth_cbi *bc) +{ + /* mark this cbi as empty */ + bc->cb = NULL; + rte_smp_mb(); + + /* make sure datapath doesn't use bpf anymore, then destroy bpf */ + bpf_eth_cbi_wait(bc); + rte_bpf_destroy(bc->bpf); + bpf_eth_cbi_cleanup(bc); +} + +static void +bpf_eth_unload(struct bpf_eth_cbh *cbh, uint16_t port, uint16_t queue) +{ + struct bpf_eth_cbi *bc; + + bc = bpf_eth_cbh_find(cbh, port, queue); + if (bc == NULL || bc->cb == NULL) + return; + + if (cbh->type == BPF_ETH_RX) + rte_eth_remove_rx_callback(port, queue, bc->cb); + else + rte_eth_remove_tx_callback(port, queue, bc->cb); + + bpf_eth_cbi_unload(bc); +} + + +__rte_experimental void +rte_bpf_eth_rx_unload(uint16_t port, uint16_t queue) +{ + struct bpf_eth_cbh *cbh; + + cbh = &rx_cbh; + rte_spinlock_lock(&cbh->lock); + bpf_eth_unload(cbh, port, queue); + rte_spinlock_unlock(&cbh->lock); +} + +__rte_experimental void +rte_bpf_eth_tx_unload(uint16_t port, uint16_t queue) +{ + struct bpf_eth_cbh *cbh; + + cbh = &tx_cbh; + rte_spinlock_lock(&cbh->lock); + bpf_eth_unload(cbh, port, queue); + rte_spinlock_unlock(&cbh->lock); +} + +static int +bpf_eth_elf_load(struct bpf_eth_cbh *cbh, uint16_t port, uint16_t queue, + const struct rte_bpf_prm *prm, const char *fname, const char *sname, + uint32_t flags) +{ + int32_t rc; + struct bpf_eth_cbi *bc; + struct rte_bpf *bpf; + rte_rx_callback_fn frx; + rte_tx_callback_fn ftx; + struct rte_bpf_jit jit; + + frx = NULL; + ftx = NULL; + + if (prm == NULL || rte_eth_dev_is_valid_port(port) == 0 || + queue >= RTE_MAX_QUEUES_PER_PORT) + return -EINVAL; + + if (cbh->type == BPF_ETH_RX) + frx = select_rx_callback(prm->prog_arg.type, flags); + else + ftx = select_tx_callback(prm->prog_arg.type, flags); + + if (frx == NULL && ftx == NULL) { + RTE_BPF_LOG(ERR, "%s(%u, %u): no callback selected;\n", + __func__, port, queue); + return -EINVAL; + } + + bpf = rte_bpf_elf_load(prm, fname, sname); + if (bpf == NULL) + return -rte_errno; + + rte_bpf_get_jit(bpf, &jit); + + if ((flags & RTE_BPF_ETH_F_JIT) != 0 && jit.func == NULL) { + RTE_BPF_LOG(ERR, "%s(%u, %u): no JIT generated;\n", + __func__, port, queue); + rte_bpf_destroy(bpf); + return -ENOTSUP; + } + + /* setup/update global callback info */ + bc = bpf_eth_cbh_add(cbh, port, queue); + if (bc == NULL) + return -ENOMEM; + + /* remove old one, if any */ + if (bc->cb != NULL) + bpf_eth_unload(cbh, port, queue); + + bc->bpf = bpf; + bc->jit = jit; + + if (cbh->type == BPF_ETH_RX) + bc->cb = rte_eth_add_rx_callback(port, queue, frx, bc); + else + bc->cb = rte_eth_add_tx_callback(port, queue, ftx, bc); + + if (bc->cb == NULL) { + rc = -rte_errno; + rte_bpf_destroy(bpf); + bpf_eth_cbi_cleanup(bc); + } else + rc = 0; + + return rc; +} + +__rte_experimental int +rte_bpf_eth_rx_elf_load(uint16_t port, uint16_t queue, + const struct rte_bpf_prm *prm, const char *fname, const char *sname, + uint32_t flags) +{ + int32_t rc; + struct bpf_eth_cbh *cbh; + + cbh = &rx_cbh; + rte_spinlock_lock(&cbh->lock); + rc = bpf_eth_elf_load(cbh, port, queue, prm, fname, sname, flags); + rte_spinlock_unlock(&cbh->lock); + + return rc; +} + +__rte_experimental int +rte_bpf_eth_tx_elf_load(uint16_t port, uint16_t queue, + const struct rte_bpf_prm *prm, const char *fname, const char *sname, + uint32_t flags) +{ + int32_t rc; + struct bpf_eth_cbh *cbh; + + cbh = &tx_cbh; + rte_spinlock_lock(&cbh->lock); + rc = bpf_eth_elf_load(cbh, port, queue, prm, fname, sname, flags); + rte_spinlock_unlock(&cbh->lock); + + return rc; +} diff --git a/lib/librte_bpf/meson.build b/lib/librte_bpf/meson.build index 668c89184e..de9de0091a 100644 --- a/lib/librte_bpf/meson.build +++ b/lib/librte_bpf/meson.build @@ -5,6 +5,7 @@ allow_experimental_apis = true sources = files('bpf.c', 'bpf_exec.c', 'bpf_load.c', + 'bpf_pkt.c', 'bpf_validate.c') if arch_subdir == 'x86' @@ -12,9 +13,10 @@ if arch_subdir == 'x86' endif install_headers = files('bpf_def.h', - 'rte_bpf.h') + 'rte_bpf.h', + 'rte_bpf_ethdev.h') -deps += ['mbuf', 'net'] +deps += ['mbuf', 'net', 'ethdev'] dep = cc.find_library('elf', required: false) if dep.found() == true and cc.has_header('libelf.h', dependencies: dep) diff --git a/lib/librte_bpf/rte_bpf_ethdev.h b/lib/librte_bpf/rte_bpf_ethdev.h new file mode 100644 index 0000000000..b4d4d3b16d --- /dev/null +++ b/lib/librte_bpf/rte_bpf_ethdev.h @@ -0,0 +1,112 @@ +/* SPDX-License-Identifier: BSD-3-Clause + * Copyright(c) 2018 Intel Corporation + */ + +#ifndef _RTE_BPF_ETHDEV_H_ +#define _RTE_BPF_ETHDEV_H_ + +/** + * @file + * + * API to install BPF filter as RX/TX callbacks for eth devices. + * Note that right now: + * - it is not MT safe, i.e. it is not allowed to do load/unload for the + * same port/queue from different threads in parallel. + * - though it allows to do load/unload at runtime + * (while RX/TX is ongoing on given port/queue). + * - allows only one BPF program per port/queue, + * i.e. new load will replace previously loaded for that port/queue BPF program. + * Filter behaviour - if BPF program returns zero value for a given packet, + * then it will be dropped inside callback and no further processing + * on RX - it will be dropped inside callback and no further processing + * for that packet will happen. + * on TX - packet will remain unsent, and it is responsibility of the user + * to handle such situation (drop, try to send again, etc.). + */ + +#include + +#ifdef __cplusplus +extern "C" { +#endif + +enum { + RTE_BPF_ETH_F_NONE = 0, + RTE_BPF_ETH_F_JIT = 0x1, /*< use compiled into native ISA code */ +}; + +/** + * Unload previously loaded BPF program (if any) from given RX port/queue + * and remove appropriate RX port/queue callback. + * + * @param port + * The identifier of the ethernet port + * @param queue + * The identifier of the RX queue on the given port + */ +void rte_bpf_eth_rx_unload(uint16_t port, uint16_t queue); + +/** + * Unload previously loaded BPF program (if any) from given TX port/queue + * and remove appropriate TX port/queue callback. + * + * @param port + * The identifier of the ethernet port + * @param queue + * The identifier of the TX queue on the given port + */ +void rte_bpf_eth_tx_unload(uint16_t port, uint16_t queue); + +/** + * Load BPF program from the ELF file and install callback to execute it + * on given RX port/queue. + * + * @param port + * The identifier of the ethernet port + * @param queue + * The identifier of the RX queue on the given port + * @param fname + * Pathname for a ELF file. + * @param sname + * Name of the executable section within the file to load. + * @param prm + * Parameters used to create and initialise the BPF exeution context. + * @param flags + * Flags that define expected expected behavior of the loaded filter + * (i.e. jited/non-jited version to use). + * @return + * Zero on successful completion or negative error code otherwise. + */ +int rte_bpf_eth_rx_elf_load(uint16_t port, uint16_t queue, + const struct rte_bpf_prm *prm, const char *fname, const char *sname, + uint32_t flags); + +/** + * Load BPF program from the ELF file and install callback to execute it + * on given TX port/queue. + * + * @param port + * The identifier of the ethernet port + * @param queue + * The identifier of the TX queue on the given port + * @param fname + * Pathname for a ELF file. + * @param sname + * Name of the executable section within the file to load. + * @param prm + * Parameters used to create and initialise the BPF exeution context. + * @param flags + * Flags that define expected expected behavior of the loaded filter + * (i.e. jited/non-jited version to use). + * @return + * Zero on successful completion or negative error code otherwise. + */ +int rte_bpf_eth_tx_elf_load(uint16_t port, uint16_t queue, + const struct rte_bpf_prm *prm, const char *fname, const char *sname, + uint32_t flags); + +#ifdef __cplusplus +} +#endif + +#endif /* _RTE_BPF_ETHDEV_H_ */ diff --git a/lib/librte_bpf/rte_bpf_version.map b/lib/librte_bpf/rte_bpf_version.map index ff65144df9..a203e088ea 100644 --- a/lib/librte_bpf/rte_bpf_version.map +++ b/lib/librte_bpf/rte_bpf_version.map @@ -3,6 +3,10 @@ EXPERIMENTAL { rte_bpf_destroy; rte_bpf_elf_load; + rte_bpf_eth_rx_elf_load; + rte_bpf_eth_rx_unload; + rte_bpf_eth_tx_elf_load; + rte_bpf_eth_tx_unload; rte_bpf_exec; rte_bpf_exec_burst; rte_bpf_get_jit; -- 2.20.1