2018-05-02 14:01:36 +03:00
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// SPDX-License-Identifier: GPL-2.0
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2018-05-18 15:00:21 +03:00
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/* Copyright(c) 2017 - 2018 Intel Corporation. */
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2018-05-02 14:01:36 +03:00
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#include <assert.h>
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#include <errno.h>
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#include <getopt.h>
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#include <libgen.h>
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#include <linux/bpf.h>
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#include <linux/if_link.h>
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#include <linux/if_xdp.h>
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#include <linux/if_ether.h>
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#include <net/if.h>
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#include <signal.h>
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#include <stdbool.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <net/ethernet.h>
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#include <sys/resource.h>
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#include <sys/socket.h>
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#include <sys/mman.h>
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#include <time.h>
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#include <unistd.h>
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#include <pthread.h>
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#include <locale.h>
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#include <sys/types.h>
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#include <poll.h>
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2018-07-27 00:32:21 +03:00
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#include "bpf/libbpf.h"
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2018-05-02 14:01:36 +03:00
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#include "bpf_util.h"
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2018-05-15 08:35:02 +03:00
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#include <bpf/bpf.h>
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2018-05-02 14:01:36 +03:00
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#include "xdpsock.h"
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#ifndef SOL_XDP
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#define SOL_XDP 283
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#endif
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#ifndef AF_XDP
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#define AF_XDP 44
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#endif
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#ifndef PF_XDP
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#define PF_XDP AF_XDP
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#endif
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#define NUM_FRAMES 131072
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#define FRAME_HEADROOM 0
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2018-06-04 14:57:14 +03:00
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#define FRAME_SHIFT 11
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2018-05-02 14:01:36 +03:00
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#define FRAME_SIZE 2048
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#define NUM_DESCS 1024
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#define BATCH_SIZE 16
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#define FQ_NUM_DESCS 1024
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#define CQ_NUM_DESCS 1024
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#define DEBUG_HEXDUMP 0
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2018-06-04 14:57:14 +03:00
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typedef __u64 u64;
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2018-05-02 14:01:36 +03:00
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typedef __u32 u32;
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static unsigned long prev_time;
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enum benchmark_type {
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BENCH_RXDROP = 0,
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BENCH_TXONLY = 1,
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BENCH_L2FWD = 2,
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};
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static enum benchmark_type opt_bench = BENCH_RXDROP;
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static u32 opt_xdp_flags;
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static const char *opt_if = "";
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static int opt_ifindex;
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static int opt_queue;
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static int opt_poll;
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static int opt_shared_packet_buffer;
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static int opt_interval = 1;
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2018-06-04 15:06:01 +03:00
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static u32 opt_xdp_bind_flags;
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2018-05-02 14:01:36 +03:00
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struct xdp_umem_uqueue {
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u32 cached_prod;
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u32 cached_cons;
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u32 mask;
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u32 size;
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2018-05-22 10:35:00 +03:00
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u32 *producer;
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u32 *consumer;
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2018-06-04 14:57:14 +03:00
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u64 *ring;
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2018-05-22 10:35:00 +03:00
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void *map;
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2018-05-02 14:01:36 +03:00
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};
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struct xdp_umem {
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2018-06-04 14:57:14 +03:00
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char *frames;
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2018-05-02 14:01:36 +03:00
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struct xdp_umem_uqueue fq;
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struct xdp_umem_uqueue cq;
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int fd;
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};
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struct xdp_uqueue {
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u32 cached_prod;
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u32 cached_cons;
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u32 mask;
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u32 size;
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2018-05-22 10:35:00 +03:00
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u32 *producer;
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u32 *consumer;
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struct xdp_desc *ring;
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void *map;
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2018-05-02 14:01:36 +03:00
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};
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struct xdpsock {
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struct xdp_uqueue rx;
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struct xdp_uqueue tx;
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int sfd;
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struct xdp_umem *umem;
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u32 outstanding_tx;
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unsigned long rx_npkts;
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unsigned long tx_npkts;
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unsigned long prev_rx_npkts;
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unsigned long prev_tx_npkts;
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};
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static int num_socks;
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struct xdpsock *xsks[MAX_SOCKS];
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static unsigned long get_nsecs(void)
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{
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struct timespec ts;
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clock_gettime(CLOCK_MONOTONIC, &ts);
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return ts.tv_sec * 1000000000UL + ts.tv_nsec;
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}
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static void dump_stats(void);
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#define lassert(expr) \
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do { \
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if (!(expr)) { \
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fprintf(stderr, "%s:%s:%i: Assertion failed: " \
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#expr ": errno: %d/\"%s\"\n", \
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__FILE__, __func__, __LINE__, \
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errno, strerror(errno)); \
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dump_stats(); \
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exit(EXIT_FAILURE); \
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} \
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} while (0)
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#define barrier() __asm__ __volatile__("": : :"memory")
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2018-07-26 00:08:19 +03:00
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#ifdef __aarch64__
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#define u_smp_rmb() __asm__ __volatile__("dmb ishld": : :"memory")
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#define u_smp_wmb() __asm__ __volatile__("dmb ishst": : :"memory")
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#else
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2018-05-02 14:01:36 +03:00
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#define u_smp_rmb() barrier()
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#define u_smp_wmb() barrier()
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2018-07-26 00:08:19 +03:00
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#endif
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2018-05-02 14:01:36 +03:00
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#define likely(x) __builtin_expect(!!(x), 1)
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#define unlikely(x) __builtin_expect(!!(x), 0)
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static const char pkt_data[] =
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"\x3c\xfd\xfe\x9e\x7f\x71\xec\xb1\xd7\x98\x3a\xc0\x08\x00\x45\x00"
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"\x00\x2e\x00\x00\x00\x00\x40\x11\x88\x97\x05\x08\x07\x08\xc8\x14"
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"\x1e\x04\x10\x92\x10\x92\x00\x1a\x6d\xa3\x34\x33\x1f\x69\x40\x6b"
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"\x54\x59\xb6\x14\x2d\x11\x44\xbf\xaf\xd9\xbe\xaa";
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static inline u32 umem_nb_free(struct xdp_umem_uqueue *q, u32 nb)
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{
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2018-06-04 14:57:15 +03:00
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u32 free_entries = q->cached_cons - q->cached_prod;
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2018-05-02 14:01:36 +03:00
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if (free_entries >= nb)
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return free_entries;
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/* Refresh the local tail pointer */
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2018-06-04 14:57:15 +03:00
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q->cached_cons = *q->consumer + q->size;
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2018-05-02 14:01:36 +03:00
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2018-06-04 14:57:15 +03:00
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return q->cached_cons - q->cached_prod;
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2018-05-02 14:01:36 +03:00
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}
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static inline u32 xq_nb_free(struct xdp_uqueue *q, u32 ndescs)
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{
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u32 free_entries = q->cached_cons - q->cached_prod;
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if (free_entries >= ndescs)
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return free_entries;
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/* Refresh the local tail pointer */
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2018-05-22 10:35:00 +03:00
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q->cached_cons = *q->consumer + q->size;
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2018-05-02 14:01:36 +03:00
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return q->cached_cons - q->cached_prod;
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}
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static inline u32 umem_nb_avail(struct xdp_umem_uqueue *q, u32 nb)
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{
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u32 entries = q->cached_prod - q->cached_cons;
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if (entries == 0) {
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2018-05-22 10:35:00 +03:00
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q->cached_prod = *q->producer;
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2018-05-02 14:01:36 +03:00
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entries = q->cached_prod - q->cached_cons;
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}
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return (entries > nb) ? nb : entries;
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}
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static inline u32 xq_nb_avail(struct xdp_uqueue *q, u32 ndescs)
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{
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u32 entries = q->cached_prod - q->cached_cons;
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if (entries == 0) {
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2018-05-22 10:35:00 +03:00
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q->cached_prod = *q->producer;
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2018-05-02 14:01:36 +03:00
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entries = q->cached_prod - q->cached_cons;
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}
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return (entries > ndescs) ? ndescs : entries;
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}
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static inline int umem_fill_to_kernel_ex(struct xdp_umem_uqueue *fq,
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struct xdp_desc *d,
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size_t nb)
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{
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u32 i;
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if (umem_nb_free(fq, nb) < nb)
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return -ENOSPC;
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for (i = 0; i < nb; i++) {
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u32 idx = fq->cached_prod++ & fq->mask;
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2018-06-04 14:57:14 +03:00
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fq->ring[idx] = d[i].addr;
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2018-05-02 14:01:36 +03:00
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}
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u_smp_wmb();
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2018-05-22 10:35:00 +03:00
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*fq->producer = fq->cached_prod;
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2018-05-02 14:01:36 +03:00
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return 0;
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}
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2018-06-04 14:57:14 +03:00
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static inline int umem_fill_to_kernel(struct xdp_umem_uqueue *fq, u64 *d,
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2018-05-02 14:01:36 +03:00
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size_t nb)
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{
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u32 i;
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if (umem_nb_free(fq, nb) < nb)
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return -ENOSPC;
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for (i = 0; i < nb; i++) {
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u32 idx = fq->cached_prod++ & fq->mask;
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2018-05-22 10:35:00 +03:00
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fq->ring[idx] = d[i];
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2018-05-02 14:01:36 +03:00
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}
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u_smp_wmb();
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2018-05-22 10:35:00 +03:00
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*fq->producer = fq->cached_prod;
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2018-05-02 14:01:36 +03:00
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return 0;
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}
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static inline size_t umem_complete_from_kernel(struct xdp_umem_uqueue *cq,
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2018-06-04 14:57:14 +03:00
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u64 *d, size_t nb)
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2018-05-02 14:01:36 +03:00
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{
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u32 idx, i, entries = umem_nb_avail(cq, nb);
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u_smp_rmb();
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for (i = 0; i < entries; i++) {
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idx = cq->cached_cons++ & cq->mask;
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2018-05-22 10:35:00 +03:00
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d[i] = cq->ring[idx];
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2018-05-02 14:01:36 +03:00
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}
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if (entries > 0) {
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u_smp_wmb();
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2018-05-22 10:35:00 +03:00
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*cq->consumer = cq->cached_cons;
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2018-05-02 14:01:36 +03:00
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}
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return entries;
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}
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2018-06-04 14:57:14 +03:00
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static inline void *xq_get_data(struct xdpsock *xsk, u64 addr)
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2018-05-02 14:01:36 +03:00
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{
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2018-06-04 14:57:14 +03:00
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return &xsk->umem->frames[addr];
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2018-05-02 14:01:36 +03:00
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}
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static inline int xq_enq(struct xdp_uqueue *uq,
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const struct xdp_desc *descs,
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unsigned int ndescs)
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{
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2018-05-22 10:35:00 +03:00
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struct xdp_desc *r = uq->ring;
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2018-05-02 14:01:36 +03:00
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unsigned int i;
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if (xq_nb_free(uq, ndescs) < ndescs)
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return -ENOSPC;
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for (i = 0; i < ndescs; i++) {
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u32 idx = uq->cached_prod++ & uq->mask;
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2018-06-04 14:57:14 +03:00
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r[idx].addr = descs[i].addr;
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2018-05-22 10:35:00 +03:00
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r[idx].len = descs[i].len;
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2018-05-02 14:01:36 +03:00
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}
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u_smp_wmb();
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2018-05-22 10:35:00 +03:00
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*uq->producer = uq->cached_prod;
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2018-05-02 14:01:36 +03:00
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return 0;
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}
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static inline int xq_enq_tx_only(struct xdp_uqueue *uq,
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2018-06-04 14:57:14 +03:00
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unsigned int id, unsigned int ndescs)
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2018-05-02 14:01:36 +03:00
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{
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2018-05-22 10:35:00 +03:00
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struct xdp_desc *r = uq->ring;
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2018-05-02 14:01:36 +03:00
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unsigned int i;
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if (xq_nb_free(uq, ndescs) < ndescs)
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return -ENOSPC;
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for (i = 0; i < ndescs; i++) {
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u32 idx = uq->cached_prod++ & uq->mask;
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2018-06-04 14:57:14 +03:00
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r[idx].addr = (id + i) << FRAME_SHIFT;
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2018-05-22 10:35:00 +03:00
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r[idx].len = sizeof(pkt_data) - 1;
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2018-05-02 14:01:36 +03:00
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}
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u_smp_wmb();
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2018-05-22 10:35:00 +03:00
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*uq->producer = uq->cached_prod;
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2018-05-02 14:01:36 +03:00
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return 0;
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}
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static inline int xq_deq(struct xdp_uqueue *uq,
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struct xdp_desc *descs,
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int ndescs)
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{
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2018-05-22 10:35:00 +03:00
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struct xdp_desc *r = uq->ring;
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2018-05-02 14:01:36 +03:00
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|
|
unsigned int idx;
|
|
|
|
int i, entries;
|
|
|
|
|
|
|
|
entries = xq_nb_avail(uq, ndescs);
|
|
|
|
|
|
|
|
u_smp_rmb();
|
|
|
|
|
|
|
|
for (i = 0; i < entries; i++) {
|
|
|
|
idx = uq->cached_cons++ & uq->mask;
|
2018-05-22 10:35:00 +03:00
|
|
|
descs[i] = r[idx];
|
2018-05-02 14:01:36 +03:00
|
|
|
}
|
|
|
|
|
|
|
|
if (entries > 0) {
|
|
|
|
u_smp_wmb();
|
|
|
|
|
2018-05-22 10:35:00 +03:00
|
|
|
*uq->consumer = uq->cached_cons;
|
2018-05-02 14:01:36 +03:00
|
|
|
}
|
|
|
|
|
|
|
|
return entries;
|
|
|
|
}
|
|
|
|
|
|
|
|
static void swap_mac_addresses(void *data)
|
|
|
|
{
|
|
|
|
struct ether_header *eth = (struct ether_header *)data;
|
|
|
|
struct ether_addr *src_addr = (struct ether_addr *)ð->ether_shost;
|
|
|
|
struct ether_addr *dst_addr = (struct ether_addr *)ð->ether_dhost;
|
|
|
|
struct ether_addr tmp;
|
|
|
|
|
|
|
|
tmp = *src_addr;
|
|
|
|
*src_addr = *dst_addr;
|
|
|
|
*dst_addr = tmp;
|
|
|
|
}
|
|
|
|
|
2018-06-04 14:57:14 +03:00
|
|
|
static void hex_dump(void *pkt, size_t length, u64 addr)
|
2018-05-02 14:01:36 +03:00
|
|
|
{
|
|
|
|
const unsigned char *address = (unsigned char *)pkt;
|
|
|
|
const unsigned char *line = address;
|
|
|
|
size_t line_size = 32;
|
|
|
|
unsigned char c;
|
2018-06-04 14:57:14 +03:00
|
|
|
char buf[32];
|
|
|
|
int i = 0;
|
2018-05-02 14:01:36 +03:00
|
|
|
|
2018-06-04 14:57:14 +03:00
|
|
|
if (!DEBUG_HEXDUMP)
|
|
|
|
return;
|
|
|
|
|
|
|
|
sprintf(buf, "addr=%llu", addr);
|
2018-05-02 14:01:36 +03:00
|
|
|
printf("length = %zu\n", length);
|
2018-06-04 14:57:14 +03:00
|
|
|
printf("%s | ", buf);
|
2018-05-02 14:01:36 +03:00
|
|
|
while (length-- > 0) {
|
|
|
|
printf("%02X ", *address++);
|
|
|
|
if (!(++i % line_size) || (length == 0 && i % line_size)) {
|
|
|
|
if (length == 0) {
|
|
|
|
while (i++ % line_size)
|
|
|
|
printf("__ ");
|
|
|
|
}
|
|
|
|
printf(" | "); /* right close */
|
|
|
|
while (line < address) {
|
|
|
|
c = *line++;
|
|
|
|
printf("%c", (c < 33 || c == 255) ? 0x2E : c);
|
|
|
|
}
|
|
|
|
printf("\n");
|
|
|
|
if (length > 0)
|
2018-06-04 14:57:14 +03:00
|
|
|
printf("%s | ", buf);
|
2018-05-02 14:01:36 +03:00
|
|
|
}
|
|
|
|
}
|
|
|
|
printf("\n");
|
|
|
|
}
|
|
|
|
|
|
|
|
static size_t gen_eth_frame(char *frame)
|
|
|
|
{
|
|
|
|
memcpy(frame, pkt_data, sizeof(pkt_data) - 1);
|
|
|
|
return sizeof(pkt_data) - 1;
|
|
|
|
}
|
|
|
|
|
|
|
|
static struct xdp_umem *xdp_umem_configure(int sfd)
|
|
|
|
{
|
|
|
|
int fq_size = FQ_NUM_DESCS, cq_size = CQ_NUM_DESCS;
|
2018-05-22 10:35:00 +03:00
|
|
|
struct xdp_mmap_offsets off;
|
2018-05-02 14:01:36 +03:00
|
|
|
struct xdp_umem_reg mr;
|
|
|
|
struct xdp_umem *umem;
|
2018-05-22 10:35:00 +03:00
|
|
|
socklen_t optlen;
|
2018-05-02 14:01:36 +03:00
|
|
|
void *bufs;
|
|
|
|
|
|
|
|
umem = calloc(1, sizeof(*umem));
|
|
|
|
lassert(umem);
|
|
|
|
|
|
|
|
lassert(posix_memalign(&bufs, getpagesize(), /* PAGE_SIZE aligned */
|
|
|
|
NUM_FRAMES * FRAME_SIZE) == 0);
|
|
|
|
|
|
|
|
mr.addr = (__u64)bufs;
|
|
|
|
mr.len = NUM_FRAMES * FRAME_SIZE;
|
2018-06-04 14:57:14 +03:00
|
|
|
mr.chunk_size = FRAME_SIZE;
|
|
|
|
mr.headroom = FRAME_HEADROOM;
|
2018-05-02 14:01:36 +03:00
|
|
|
|
|
|
|
lassert(setsockopt(sfd, SOL_XDP, XDP_UMEM_REG, &mr, sizeof(mr)) == 0);
|
|
|
|
lassert(setsockopt(sfd, SOL_XDP, XDP_UMEM_FILL_RING, &fq_size,
|
|
|
|
sizeof(int)) == 0);
|
|
|
|
lassert(setsockopt(sfd, SOL_XDP, XDP_UMEM_COMPLETION_RING, &cq_size,
|
|
|
|
sizeof(int)) == 0);
|
|
|
|
|
2018-05-22 10:35:00 +03:00
|
|
|
optlen = sizeof(off);
|
|
|
|
lassert(getsockopt(sfd, SOL_XDP, XDP_MMAP_OFFSETS, &off,
|
|
|
|
&optlen) == 0);
|
|
|
|
|
|
|
|
umem->fq.map = mmap(0, off.fr.desc +
|
2018-06-04 14:57:14 +03:00
|
|
|
FQ_NUM_DESCS * sizeof(u64),
|
2018-05-22 10:35:00 +03:00
|
|
|
PROT_READ | PROT_WRITE,
|
|
|
|
MAP_SHARED | MAP_POPULATE, sfd,
|
|
|
|
XDP_UMEM_PGOFF_FILL_RING);
|
|
|
|
lassert(umem->fq.map != MAP_FAILED);
|
2018-05-02 14:01:36 +03:00
|
|
|
|
|
|
|
umem->fq.mask = FQ_NUM_DESCS - 1;
|
|
|
|
umem->fq.size = FQ_NUM_DESCS;
|
2018-05-22 10:35:00 +03:00
|
|
|
umem->fq.producer = umem->fq.map + off.fr.producer;
|
|
|
|
umem->fq.consumer = umem->fq.map + off.fr.consumer;
|
|
|
|
umem->fq.ring = umem->fq.map + off.fr.desc;
|
2018-06-04 14:57:15 +03:00
|
|
|
umem->fq.cached_cons = FQ_NUM_DESCS;
|
2018-05-02 14:01:36 +03:00
|
|
|
|
2018-05-22 10:35:00 +03:00
|
|
|
umem->cq.map = mmap(0, off.cr.desc +
|
2018-06-04 14:57:14 +03:00
|
|
|
CQ_NUM_DESCS * sizeof(u64),
|
2018-05-02 14:01:36 +03:00
|
|
|
PROT_READ | PROT_WRITE,
|
|
|
|
MAP_SHARED | MAP_POPULATE, sfd,
|
|
|
|
XDP_UMEM_PGOFF_COMPLETION_RING);
|
2018-05-22 10:35:00 +03:00
|
|
|
lassert(umem->cq.map != MAP_FAILED);
|
2018-05-02 14:01:36 +03:00
|
|
|
|
|
|
|
umem->cq.mask = CQ_NUM_DESCS - 1;
|
|
|
|
umem->cq.size = CQ_NUM_DESCS;
|
2018-05-22 10:35:00 +03:00
|
|
|
umem->cq.producer = umem->cq.map + off.cr.producer;
|
|
|
|
umem->cq.consumer = umem->cq.map + off.cr.consumer;
|
|
|
|
umem->cq.ring = umem->cq.map + off.cr.desc;
|
2018-05-02 14:01:36 +03:00
|
|
|
|
2018-06-04 14:57:14 +03:00
|
|
|
umem->frames = bufs;
|
2018-05-02 14:01:36 +03:00
|
|
|
umem->fd = sfd;
|
|
|
|
|
|
|
|
if (opt_bench == BENCH_TXONLY) {
|
|
|
|
int i;
|
|
|
|
|
2018-06-04 14:57:14 +03:00
|
|
|
for (i = 0; i < NUM_FRAMES * FRAME_SIZE; i += FRAME_SIZE)
|
|
|
|
(void)gen_eth_frame(&umem->frames[i]);
|
2018-05-02 14:01:36 +03:00
|
|
|
}
|
|
|
|
|
|
|
|
return umem;
|
|
|
|
}
|
|
|
|
|
|
|
|
static struct xdpsock *xsk_configure(struct xdp_umem *umem)
|
|
|
|
{
|
|
|
|
struct sockaddr_xdp sxdp = {};
|
2018-05-22 10:35:00 +03:00
|
|
|
struct xdp_mmap_offsets off;
|
2018-05-02 14:01:36 +03:00
|
|
|
int sfd, ndescs = NUM_DESCS;
|
|
|
|
struct xdpsock *xsk;
|
|
|
|
bool shared = true;
|
2018-05-22 10:35:00 +03:00
|
|
|
socklen_t optlen;
|
2018-06-04 14:57:14 +03:00
|
|
|
u64 i;
|
2018-05-02 14:01:36 +03:00
|
|
|
|
|
|
|
sfd = socket(PF_XDP, SOCK_RAW, 0);
|
|
|
|
lassert(sfd >= 0);
|
|
|
|
|
|
|
|
xsk = calloc(1, sizeof(*xsk));
|
|
|
|
lassert(xsk);
|
|
|
|
|
|
|
|
xsk->sfd = sfd;
|
|
|
|
xsk->outstanding_tx = 0;
|
|
|
|
|
|
|
|
if (!umem) {
|
|
|
|
shared = false;
|
|
|
|
xsk->umem = xdp_umem_configure(sfd);
|
|
|
|
} else {
|
|
|
|
xsk->umem = umem;
|
|
|
|
}
|
|
|
|
|
|
|
|
lassert(setsockopt(sfd, SOL_XDP, XDP_RX_RING,
|
|
|
|
&ndescs, sizeof(int)) == 0);
|
|
|
|
lassert(setsockopt(sfd, SOL_XDP, XDP_TX_RING,
|
|
|
|
&ndescs, sizeof(int)) == 0);
|
2018-05-22 10:35:00 +03:00
|
|
|
optlen = sizeof(off);
|
|
|
|
lassert(getsockopt(sfd, SOL_XDP, XDP_MMAP_OFFSETS, &off,
|
|
|
|
&optlen) == 0);
|
2018-05-02 14:01:36 +03:00
|
|
|
|
|
|
|
/* Rx */
|
2018-05-22 10:35:00 +03:00
|
|
|
xsk->rx.map = mmap(NULL,
|
|
|
|
off.rx.desc +
|
|
|
|
NUM_DESCS * sizeof(struct xdp_desc),
|
|
|
|
PROT_READ | PROT_WRITE,
|
|
|
|
MAP_SHARED | MAP_POPULATE, sfd,
|
|
|
|
XDP_PGOFF_RX_RING);
|
|
|
|
lassert(xsk->rx.map != MAP_FAILED);
|
2018-05-02 14:01:36 +03:00
|
|
|
|
|
|
|
if (!shared) {
|
2018-06-04 14:57:14 +03:00
|
|
|
for (i = 0; i < NUM_DESCS * FRAME_SIZE; i += FRAME_SIZE)
|
2018-05-02 14:01:36 +03:00
|
|
|
lassert(umem_fill_to_kernel(&xsk->umem->fq, &i, 1)
|
|
|
|
== 0);
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Tx */
|
2018-05-22 10:35:00 +03:00
|
|
|
xsk->tx.map = mmap(NULL,
|
|
|
|
off.tx.desc +
|
|
|
|
NUM_DESCS * sizeof(struct xdp_desc),
|
|
|
|
PROT_READ | PROT_WRITE,
|
|
|
|
MAP_SHARED | MAP_POPULATE, sfd,
|
|
|
|
XDP_PGOFF_TX_RING);
|
|
|
|
lassert(xsk->tx.map != MAP_FAILED);
|
2018-05-02 14:01:36 +03:00
|
|
|
|
|
|
|
xsk->rx.mask = NUM_DESCS - 1;
|
|
|
|
xsk->rx.size = NUM_DESCS;
|
2018-05-22 10:35:00 +03:00
|
|
|
xsk->rx.producer = xsk->rx.map + off.rx.producer;
|
|
|
|
xsk->rx.consumer = xsk->rx.map + off.rx.consumer;
|
|
|
|
xsk->rx.ring = xsk->rx.map + off.rx.desc;
|
2018-05-02 14:01:36 +03:00
|
|
|
|
|
|
|
xsk->tx.mask = NUM_DESCS - 1;
|
|
|
|
xsk->tx.size = NUM_DESCS;
|
2018-05-22 10:35:00 +03:00
|
|
|
xsk->tx.producer = xsk->tx.map + off.tx.producer;
|
|
|
|
xsk->tx.consumer = xsk->tx.map + off.tx.consumer;
|
|
|
|
xsk->tx.ring = xsk->tx.map + off.tx.desc;
|
2018-06-04 14:57:15 +03:00
|
|
|
xsk->tx.cached_cons = NUM_DESCS;
|
2018-05-02 14:01:36 +03:00
|
|
|
|
|
|
|
sxdp.sxdp_family = PF_XDP;
|
|
|
|
sxdp.sxdp_ifindex = opt_ifindex;
|
|
|
|
sxdp.sxdp_queue_id = opt_queue;
|
2018-06-04 15:06:01 +03:00
|
|
|
|
2018-05-02 14:01:36 +03:00
|
|
|
if (shared) {
|
|
|
|
sxdp.sxdp_flags = XDP_SHARED_UMEM;
|
|
|
|
sxdp.sxdp_shared_umem_fd = umem->fd;
|
2018-06-04 15:06:01 +03:00
|
|
|
} else {
|
|
|
|
sxdp.sxdp_flags = opt_xdp_bind_flags;
|
2018-05-02 14:01:36 +03:00
|
|
|
}
|
|
|
|
|
|
|
|
lassert(bind(sfd, (struct sockaddr *)&sxdp, sizeof(sxdp)) == 0);
|
|
|
|
|
|
|
|
return xsk;
|
|
|
|
}
|
|
|
|
|
|
|
|
static void print_benchmark(bool running)
|
|
|
|
{
|
|
|
|
const char *bench_str = "INVALID";
|
|
|
|
|
|
|
|
if (opt_bench == BENCH_RXDROP)
|
|
|
|
bench_str = "rxdrop";
|
|
|
|
else if (opt_bench == BENCH_TXONLY)
|
|
|
|
bench_str = "txonly";
|
|
|
|
else if (opt_bench == BENCH_L2FWD)
|
|
|
|
bench_str = "l2fwd";
|
|
|
|
|
|
|
|
printf("%s:%d %s ", opt_if, opt_queue, bench_str);
|
|
|
|
if (opt_xdp_flags & XDP_FLAGS_SKB_MODE)
|
|
|
|
printf("xdp-skb ");
|
|
|
|
else if (opt_xdp_flags & XDP_FLAGS_DRV_MODE)
|
|
|
|
printf("xdp-drv ");
|
|
|
|
else
|
|
|
|
printf(" ");
|
|
|
|
|
|
|
|
if (opt_poll)
|
|
|
|
printf("poll() ");
|
|
|
|
|
|
|
|
if (running) {
|
|
|
|
printf("running...");
|
|
|
|
fflush(stdout);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
static void dump_stats(void)
|
|
|
|
{
|
|
|
|
unsigned long now = get_nsecs();
|
|
|
|
long dt = now - prev_time;
|
|
|
|
int i;
|
|
|
|
|
|
|
|
prev_time = now;
|
|
|
|
|
2018-08-31 04:00:49 +03:00
|
|
|
for (i = 0; i < num_socks && xsks[i]; i++) {
|
2018-05-02 14:01:36 +03:00
|
|
|
char *fmt = "%-15s %'-11.0f %'-11lu\n";
|
|
|
|
double rx_pps, tx_pps;
|
|
|
|
|
|
|
|
rx_pps = (xsks[i]->rx_npkts - xsks[i]->prev_rx_npkts) *
|
|
|
|
1000000000. / dt;
|
|
|
|
tx_pps = (xsks[i]->tx_npkts - xsks[i]->prev_tx_npkts) *
|
|
|
|
1000000000. / dt;
|
|
|
|
|
|
|
|
printf("\n sock%d@", i);
|
|
|
|
print_benchmark(false);
|
|
|
|
printf("\n");
|
|
|
|
|
|
|
|
printf("%-15s %-11s %-11s %-11.2f\n", "", "pps", "pkts",
|
|
|
|
dt / 1000000000.);
|
|
|
|
printf(fmt, "rx", rx_pps, xsks[i]->rx_npkts);
|
|
|
|
printf(fmt, "tx", tx_pps, xsks[i]->tx_npkts);
|
|
|
|
|
|
|
|
xsks[i]->prev_rx_npkts = xsks[i]->rx_npkts;
|
|
|
|
xsks[i]->prev_tx_npkts = xsks[i]->tx_npkts;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
static void *poller(void *arg)
|
|
|
|
{
|
|
|
|
(void)arg;
|
|
|
|
for (;;) {
|
|
|
|
sleep(opt_interval);
|
|
|
|
dump_stats();
|
|
|
|
}
|
|
|
|
|
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
|
|
|
|
static void int_exit(int sig)
|
|
|
|
{
|
|
|
|
(void)sig;
|
|
|
|
dump_stats();
|
|
|
|
bpf_set_link_xdp_fd(opt_ifindex, -1, opt_xdp_flags);
|
|
|
|
exit(EXIT_SUCCESS);
|
|
|
|
}
|
|
|
|
|
|
|
|
static struct option long_options[] = {
|
|
|
|
{"rxdrop", no_argument, 0, 'r'},
|
|
|
|
{"txonly", no_argument, 0, 't'},
|
|
|
|
{"l2fwd", no_argument, 0, 'l'},
|
|
|
|
{"interface", required_argument, 0, 'i'},
|
|
|
|
{"queue", required_argument, 0, 'q'},
|
|
|
|
{"poll", no_argument, 0, 'p'},
|
|
|
|
{"shared-buffer", no_argument, 0, 's'},
|
|
|
|
{"xdp-skb", no_argument, 0, 'S'},
|
|
|
|
{"xdp-native", no_argument, 0, 'N'},
|
|
|
|
{"interval", required_argument, 0, 'n'},
|
2018-08-28 15:44:35 +03:00
|
|
|
{"zero-copy", no_argument, 0, 'z'},
|
|
|
|
{"copy", no_argument, 0, 'c'},
|
2018-05-02 14:01:36 +03:00
|
|
|
{0, 0, 0, 0}
|
|
|
|
};
|
|
|
|
|
|
|
|
static void usage(const char *prog)
|
|
|
|
{
|
|
|
|
const char *str =
|
|
|
|
" Usage: %s [OPTIONS]\n"
|
|
|
|
" Options:\n"
|
|
|
|
" -r, --rxdrop Discard all incoming packets (default)\n"
|
|
|
|
" -t, --txonly Only send packets\n"
|
|
|
|
" -l, --l2fwd MAC swap L2 forwarding\n"
|
|
|
|
" -i, --interface=n Run on interface n\n"
|
|
|
|
" -q, --queue=n Use queue n (default 0)\n"
|
|
|
|
" -p, --poll Use poll syscall\n"
|
|
|
|
" -s, --shared-buffer Use shared packet buffer\n"
|
|
|
|
" -S, --xdp-skb=n Use XDP skb-mod\n"
|
|
|
|
" -N, --xdp-native=n Enfore XDP native mode\n"
|
|
|
|
" -n, --interval=n Specify statistics update interval (default 1 sec).\n"
|
2018-08-28 15:44:35 +03:00
|
|
|
" -z, --zero-copy Force zero-copy mode.\n"
|
|
|
|
" -c, --copy Force copy mode.\n"
|
2018-05-02 14:01:36 +03:00
|
|
|
"\n";
|
|
|
|
fprintf(stderr, str, prog);
|
|
|
|
exit(EXIT_FAILURE);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void parse_command_line(int argc, char **argv)
|
|
|
|
{
|
|
|
|
int option_index, c;
|
|
|
|
|
|
|
|
opterr = 0;
|
|
|
|
|
|
|
|
for (;;) {
|
2018-08-28 15:44:35 +03:00
|
|
|
c = getopt_long(argc, argv, "rtli:q:psSNn:cz", long_options,
|
2018-05-02 14:01:36 +03:00
|
|
|
&option_index);
|
|
|
|
if (c == -1)
|
|
|
|
break;
|
|
|
|
|
|
|
|
switch (c) {
|
|
|
|
case 'r':
|
|
|
|
opt_bench = BENCH_RXDROP;
|
|
|
|
break;
|
|
|
|
case 't':
|
|
|
|
opt_bench = BENCH_TXONLY;
|
|
|
|
break;
|
|
|
|
case 'l':
|
|
|
|
opt_bench = BENCH_L2FWD;
|
|
|
|
break;
|
|
|
|
case 'i':
|
|
|
|
opt_if = optarg;
|
|
|
|
break;
|
|
|
|
case 'q':
|
|
|
|
opt_queue = atoi(optarg);
|
|
|
|
break;
|
|
|
|
case 's':
|
|
|
|
opt_shared_packet_buffer = 1;
|
|
|
|
break;
|
|
|
|
case 'p':
|
|
|
|
opt_poll = 1;
|
|
|
|
break;
|
|
|
|
case 'S':
|
|
|
|
opt_xdp_flags |= XDP_FLAGS_SKB_MODE;
|
2018-06-04 15:06:01 +03:00
|
|
|
opt_xdp_bind_flags |= XDP_COPY;
|
2018-05-02 14:01:36 +03:00
|
|
|
break;
|
|
|
|
case 'N':
|
|
|
|
opt_xdp_flags |= XDP_FLAGS_DRV_MODE;
|
|
|
|
break;
|
|
|
|
case 'n':
|
|
|
|
opt_interval = atoi(optarg);
|
|
|
|
break;
|
2018-08-28 15:44:35 +03:00
|
|
|
case 'z':
|
|
|
|
opt_xdp_bind_flags |= XDP_ZEROCOPY;
|
|
|
|
break;
|
|
|
|
case 'c':
|
|
|
|
opt_xdp_bind_flags |= XDP_COPY;
|
|
|
|
break;
|
2018-05-02 14:01:36 +03:00
|
|
|
default:
|
|
|
|
usage(basename(argv[0]));
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
opt_ifindex = if_nametoindex(opt_if);
|
|
|
|
if (!opt_ifindex) {
|
|
|
|
fprintf(stderr, "ERROR: interface \"%s\" does not exist\n",
|
|
|
|
opt_if);
|
|
|
|
usage(basename(argv[0]));
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
static void kick_tx(int fd)
|
|
|
|
{
|
|
|
|
int ret;
|
|
|
|
|
|
|
|
ret = sendto(fd, NULL, 0, MSG_DONTWAIT, NULL, 0);
|
2018-06-29 10:48:19 +03:00
|
|
|
if (ret >= 0 || errno == ENOBUFS || errno == EAGAIN || errno == EBUSY)
|
2018-05-02 14:01:36 +03:00
|
|
|
return;
|
|
|
|
lassert(0);
|
|
|
|
}
|
|
|
|
|
|
|
|
static inline void complete_tx_l2fwd(struct xdpsock *xsk)
|
|
|
|
{
|
2018-06-04 14:57:14 +03:00
|
|
|
u64 descs[BATCH_SIZE];
|
2018-05-02 14:01:36 +03:00
|
|
|
unsigned int rcvd;
|
|
|
|
size_t ndescs;
|
|
|
|
|
|
|
|
if (!xsk->outstanding_tx)
|
|
|
|
return;
|
|
|
|
|
|
|
|
kick_tx(xsk->sfd);
|
|
|
|
ndescs = (xsk->outstanding_tx > BATCH_SIZE) ? BATCH_SIZE :
|
|
|
|
xsk->outstanding_tx;
|
|
|
|
|
|
|
|
/* re-add completed Tx buffers */
|
|
|
|
rcvd = umem_complete_from_kernel(&xsk->umem->cq, descs, ndescs);
|
|
|
|
if (rcvd > 0) {
|
|
|
|
umem_fill_to_kernel(&xsk->umem->fq, descs, rcvd);
|
|
|
|
xsk->outstanding_tx -= rcvd;
|
|
|
|
xsk->tx_npkts += rcvd;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
static inline void complete_tx_only(struct xdpsock *xsk)
|
|
|
|
{
|
2018-06-04 14:57:14 +03:00
|
|
|
u64 descs[BATCH_SIZE];
|
2018-05-02 14:01:36 +03:00
|
|
|
unsigned int rcvd;
|
|
|
|
|
|
|
|
if (!xsk->outstanding_tx)
|
|
|
|
return;
|
|
|
|
|
|
|
|
kick_tx(xsk->sfd);
|
|
|
|
|
|
|
|
rcvd = umem_complete_from_kernel(&xsk->umem->cq, descs, BATCH_SIZE);
|
|
|
|
if (rcvd > 0) {
|
|
|
|
xsk->outstanding_tx -= rcvd;
|
|
|
|
xsk->tx_npkts += rcvd;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
static void rx_drop(struct xdpsock *xsk)
|
|
|
|
{
|
|
|
|
struct xdp_desc descs[BATCH_SIZE];
|
|
|
|
unsigned int rcvd, i;
|
|
|
|
|
|
|
|
rcvd = xq_deq(&xsk->rx, descs, BATCH_SIZE);
|
|
|
|
if (!rcvd)
|
|
|
|
return;
|
|
|
|
|
|
|
|
for (i = 0; i < rcvd; i++) {
|
2018-06-04 14:57:14 +03:00
|
|
|
char *pkt = xq_get_data(xsk, descs[i].addr);
|
2018-05-02 14:01:36 +03:00
|
|
|
|
2018-06-04 14:57:14 +03:00
|
|
|
hex_dump(pkt, descs[i].len, descs[i].addr);
|
2018-05-02 14:01:36 +03:00
|
|
|
}
|
|
|
|
|
|
|
|
xsk->rx_npkts += rcvd;
|
|
|
|
|
|
|
|
umem_fill_to_kernel_ex(&xsk->umem->fq, descs, rcvd);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void rx_drop_all(void)
|
|
|
|
{
|
|
|
|
struct pollfd fds[MAX_SOCKS + 1];
|
|
|
|
int i, ret, timeout, nfds = 1;
|
|
|
|
|
|
|
|
memset(fds, 0, sizeof(fds));
|
|
|
|
|
|
|
|
for (i = 0; i < num_socks; i++) {
|
|
|
|
fds[i].fd = xsks[i]->sfd;
|
|
|
|
fds[i].events = POLLIN;
|
|
|
|
timeout = 1000; /* 1sn */
|
|
|
|
}
|
|
|
|
|
|
|
|
for (;;) {
|
|
|
|
if (opt_poll) {
|
|
|
|
ret = poll(fds, nfds, timeout);
|
|
|
|
if (ret <= 0)
|
|
|
|
continue;
|
|
|
|
}
|
|
|
|
|
|
|
|
for (i = 0; i < num_socks; i++)
|
|
|
|
rx_drop(xsks[i]);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
static void tx_only(struct xdpsock *xsk)
|
|
|
|
{
|
|
|
|
int timeout, ret, nfds = 1;
|
|
|
|
struct pollfd fds[nfds + 1];
|
|
|
|
unsigned int idx = 0;
|
|
|
|
|
|
|
|
memset(fds, 0, sizeof(fds));
|
|
|
|
fds[0].fd = xsk->sfd;
|
|
|
|
fds[0].events = POLLOUT;
|
|
|
|
timeout = 1000; /* 1sn */
|
|
|
|
|
|
|
|
for (;;) {
|
|
|
|
if (opt_poll) {
|
|
|
|
ret = poll(fds, nfds, timeout);
|
|
|
|
if (ret <= 0)
|
|
|
|
continue;
|
|
|
|
|
|
|
|
if (fds[0].fd != xsk->sfd ||
|
|
|
|
!(fds[0].revents & POLLOUT))
|
|
|
|
continue;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (xq_nb_free(&xsk->tx, BATCH_SIZE) >= BATCH_SIZE) {
|
|
|
|
lassert(xq_enq_tx_only(&xsk->tx, idx, BATCH_SIZE) == 0);
|
|
|
|
|
|
|
|
xsk->outstanding_tx += BATCH_SIZE;
|
|
|
|
idx += BATCH_SIZE;
|
|
|
|
idx %= NUM_FRAMES;
|
|
|
|
}
|
|
|
|
|
|
|
|
complete_tx_only(xsk);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
static void l2fwd(struct xdpsock *xsk)
|
|
|
|
{
|
|
|
|
for (;;) {
|
|
|
|
struct xdp_desc descs[BATCH_SIZE];
|
|
|
|
unsigned int rcvd, i;
|
|
|
|
int ret;
|
|
|
|
|
|
|
|
for (;;) {
|
|
|
|
complete_tx_l2fwd(xsk);
|
|
|
|
|
|
|
|
rcvd = xq_deq(&xsk->rx, descs, BATCH_SIZE);
|
|
|
|
if (rcvd > 0)
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
for (i = 0; i < rcvd; i++) {
|
2018-06-04 14:57:14 +03:00
|
|
|
char *pkt = xq_get_data(xsk, descs[i].addr);
|
2018-05-02 14:01:36 +03:00
|
|
|
|
|
|
|
swap_mac_addresses(pkt);
|
|
|
|
|
2018-06-04 14:57:14 +03:00
|
|
|
hex_dump(pkt, descs[i].len, descs[i].addr);
|
2018-05-02 14:01:36 +03:00
|
|
|
}
|
|
|
|
|
|
|
|
xsk->rx_npkts += rcvd;
|
|
|
|
|
|
|
|
ret = xq_enq(&xsk->tx, descs, rcvd);
|
|
|
|
lassert(ret == 0);
|
|
|
|
xsk->outstanding_tx += rcvd;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
int main(int argc, char **argv)
|
|
|
|
{
|
|
|
|
struct rlimit r = {RLIM_INFINITY, RLIM_INFINITY};
|
2018-07-27 00:32:21 +03:00
|
|
|
struct bpf_prog_load_attr prog_load_attr = {
|
|
|
|
.prog_type = BPF_PROG_TYPE_XDP,
|
|
|
|
};
|
|
|
|
int prog_fd, qidconf_map, xsks_map;
|
|
|
|
struct bpf_object *obj;
|
2018-05-02 14:01:36 +03:00
|
|
|
char xdp_filename[256];
|
2018-07-27 00:32:21 +03:00
|
|
|
struct bpf_map *map;
|
2018-05-02 14:01:36 +03:00
|
|
|
int i, ret, key = 0;
|
|
|
|
pthread_t pt;
|
|
|
|
|
|
|
|
parse_command_line(argc, argv);
|
|
|
|
|
|
|
|
if (setrlimit(RLIMIT_MEMLOCK, &r)) {
|
|
|
|
fprintf(stderr, "ERROR: setrlimit(RLIMIT_MEMLOCK) \"%s\"\n",
|
|
|
|
strerror(errno));
|
|
|
|
exit(EXIT_FAILURE);
|
|
|
|
}
|
|
|
|
|
|
|
|
snprintf(xdp_filename, sizeof(xdp_filename), "%s_kern.o", argv[0]);
|
2018-07-27 00:32:21 +03:00
|
|
|
prog_load_attr.file = xdp_filename;
|
2018-05-02 14:01:36 +03:00
|
|
|
|
2018-07-27 00:32:21 +03:00
|
|
|
if (bpf_prog_load_xattr(&prog_load_attr, &obj, &prog_fd))
|
|
|
|
exit(EXIT_FAILURE);
|
|
|
|
if (prog_fd < 0) {
|
|
|
|
fprintf(stderr, "ERROR: no program found: %s\n",
|
|
|
|
strerror(prog_fd));
|
2018-05-02 14:01:36 +03:00
|
|
|
exit(EXIT_FAILURE);
|
|
|
|
}
|
|
|
|
|
2018-07-27 00:32:21 +03:00
|
|
|
map = bpf_object__find_map_by_name(obj, "qidconf_map");
|
|
|
|
qidconf_map = bpf_map__fd(map);
|
|
|
|
if (qidconf_map < 0) {
|
|
|
|
fprintf(stderr, "ERROR: no qidconf map found: %s\n",
|
|
|
|
strerror(qidconf_map));
|
|
|
|
exit(EXIT_FAILURE);
|
|
|
|
}
|
|
|
|
|
|
|
|
map = bpf_object__find_map_by_name(obj, "xsks_map");
|
|
|
|
xsks_map = bpf_map__fd(map);
|
|
|
|
if (xsks_map < 0) {
|
|
|
|
fprintf(stderr, "ERROR: no xsks map found: %s\n",
|
|
|
|
strerror(xsks_map));
|
2018-05-02 14:01:36 +03:00
|
|
|
exit(EXIT_FAILURE);
|
|
|
|
}
|
|
|
|
|
2018-07-27 00:32:21 +03:00
|
|
|
if (bpf_set_link_xdp_fd(opt_ifindex, prog_fd, opt_xdp_flags) < 0) {
|
2018-05-02 14:01:36 +03:00
|
|
|
fprintf(stderr, "ERROR: link set xdp fd failed\n");
|
|
|
|
exit(EXIT_FAILURE);
|
|
|
|
}
|
|
|
|
|
2018-07-27 00:32:21 +03:00
|
|
|
ret = bpf_map_update_elem(qidconf_map, &key, &opt_queue, 0);
|
2018-05-02 14:01:36 +03:00
|
|
|
if (ret) {
|
|
|
|
fprintf(stderr, "ERROR: bpf_map_update_elem qidconf\n");
|
|
|
|
exit(EXIT_FAILURE);
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Create sockets... */
|
|
|
|
xsks[num_socks++] = xsk_configure(NULL);
|
|
|
|
|
|
|
|
#if RR_LB
|
|
|
|
for (i = 0; i < MAX_SOCKS - 1; i++)
|
|
|
|
xsks[num_socks++] = xsk_configure(xsks[0]->umem);
|
|
|
|
#endif
|
|
|
|
|
|
|
|
/* ...and insert them into the map. */
|
|
|
|
for (i = 0; i < num_socks; i++) {
|
|
|
|
key = i;
|
2018-07-27 00:32:21 +03:00
|
|
|
ret = bpf_map_update_elem(xsks_map, &key, &xsks[i]->sfd, 0);
|
2018-05-02 14:01:36 +03:00
|
|
|
if (ret) {
|
|
|
|
fprintf(stderr, "ERROR: bpf_map_update_elem %d\n", i);
|
|
|
|
exit(EXIT_FAILURE);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
signal(SIGINT, int_exit);
|
|
|
|
signal(SIGTERM, int_exit);
|
|
|
|
signal(SIGABRT, int_exit);
|
|
|
|
|
|
|
|
setlocale(LC_ALL, "");
|
|
|
|
|
|
|
|
ret = pthread_create(&pt, NULL, poller, NULL);
|
|
|
|
lassert(ret == 0);
|
|
|
|
|
|
|
|
prev_time = get_nsecs();
|
|
|
|
|
|
|
|
if (opt_bench == BENCH_RXDROP)
|
|
|
|
rx_drop_all();
|
|
|
|
else if (opt_bench == BENCH_TXONLY)
|
|
|
|
tx_only(xsks[0]);
|
|
|
|
else
|
|
|
|
l2fwd(xsks[0]);
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|