diff options
Diffstat (limited to 'samples/bpf/xdpsock_user.c')
| -rw-r--r-- | samples/bpf/xdpsock_user.c | 52 |
1 files changed, 29 insertions, 23 deletions
diff --git a/samples/bpf/xdpsock_user.c b/samples/bpf/xdpsock_user.c index 7febc3d519a1..1ba3e7142f39 100644 --- a/samples/bpf/xdpsock_user.c +++ b/samples/bpf/xdpsock_user.c @@ -45,7 +45,6 @@ #endif #define NUM_FRAMES (4 * 1024) -#define BATCH_SIZE 64 #define DEBUG_HEXDUMP 0 @@ -68,6 +67,7 @@ static int opt_queue; static unsigned long opt_duration; static unsigned long start_time; static bool benchmark_done; +static u32 opt_batch_size = 64; static int opt_poll; static int opt_interval = 1; static u32 opt_xdp_bind_flags = XDP_USE_NEED_WAKEUP; @@ -237,7 +237,6 @@ static void __exit_with_error(int error, const char *file, const char *func, #define exit_with_error(error) __exit_with_error(error, __FILE__, __func__, \ __LINE__) - static const char pkt_data[] = "\x3c\xfd\xfe\x9e\x7f\x71\xec\xb1\xd7\x98\x3a\xc0\x08\x00\x45\x00" "\x00\x2e\x00\x00\x00\x00\x40\x11\x88\x97\x05\x08\x07\x08\xc8\x14" @@ -291,11 +290,10 @@ static void hex_dump(void *pkt, size_t length, u64 addr) printf("\n"); } -static size_t gen_eth_frame(struct xsk_umem_info *umem, u64 addr) +static void gen_eth_frame(struct xsk_umem_info *umem, u64 addr) { memcpy(xsk_umem__get_data(umem->buffer, addr), pkt_data, sizeof(pkt_data) - 1); - return sizeof(pkt_data) - 1; } static struct xsk_umem_info *xsk_configure_umem(void *buffer, u64 size) @@ -393,6 +391,7 @@ static struct option long_options[] = { {"shared-umem", no_argument, 0, 'M'}, {"force", no_argument, 0, 'F'}, {"duration", required_argument, 0, 'd'}, + {"batch-size", required_argument, 0, 'b'}, {0, 0, 0, 0} }; @@ -419,8 +418,11 @@ static void usage(const char *prog) " -F, --force Force loading the XDP prog\n" " -d, --duration=n Duration in secs to run command.\n" " Default: forever.\n" + " -b, --batch-size=n Batch size for sending or receiving\n" + " packets. Default: %d\n" "\n"; - fprintf(stderr, str, prog, XSK_UMEM__DEFAULT_FRAME_SIZE); + fprintf(stderr, str, prog, XSK_UMEM__DEFAULT_FRAME_SIZE, + opt_batch_size); exit(EXIT_FAILURE); } @@ -431,7 +433,7 @@ static void parse_command_line(int argc, char **argv) opterr = 0; for (;;) { - c = getopt_long(argc, argv, "Frtli:q:psSNn:czf:muMd:", + c = getopt_long(argc, argv, "Frtli:q:pSNn:czf:muMd:b:", long_options, &option_index); if (c == -1) break; @@ -493,6 +495,9 @@ static void parse_command_line(int argc, char **argv) opt_duration = atoi(optarg); opt_duration *= 1000000000; break; + case 'b': + opt_batch_size = atoi(optarg); + break; default: usage(basename(argv[0])); } @@ -540,7 +545,7 @@ static inline void complete_tx_l2fwd(struct xsk_socket_info *xsk, if (!opt_need_wakeup || xsk_ring_prod__needs_wakeup(&xsk->tx)) kick_tx(xsk); - ndescs = (xsk->outstanding_tx > BATCH_SIZE) ? BATCH_SIZE : + ndescs = (xsk->outstanding_tx > opt_batch_size) ? opt_batch_size : xsk->outstanding_tx; /* re-add completed Tx buffers */ @@ -580,7 +585,7 @@ static inline void complete_tx_only(struct xsk_socket_info *xsk) if (!opt_need_wakeup || xsk_ring_prod__needs_wakeup(&xsk->tx)) kick_tx(xsk); - rcvd = xsk_ring_cons__peek(&xsk->umem->cq, BATCH_SIZE, &idx); + rcvd = xsk_ring_cons__peek(&xsk->umem->cq, opt_batch_size, &idx); if (rcvd > 0) { xsk_ring_cons__release(&xsk->umem->cq, rcvd); xsk->outstanding_tx -= rcvd; @@ -594,7 +599,7 @@ static void rx_drop(struct xsk_socket_info *xsk, struct pollfd *fds) u32 idx_rx = 0, idx_fq = 0; int ret; - rcvd = xsk_ring_cons__peek(&xsk->rx, BATCH_SIZE, &idx_rx); + rcvd = xsk_ring_cons__peek(&xsk->rx, opt_batch_size, &idx_rx); if (!rcvd) { if (xsk_ring_prod__needs_wakeup(&xsk->umem->fq)) ret = poll(fds, num_socks, opt_timeout); @@ -655,23 +660,24 @@ static void rx_drop_all(void) static void tx_only(struct xsk_socket_info *xsk, u32 frame_nb) { u32 idx; + unsigned int i; - if (xsk_ring_prod__reserve(&xsk->tx, BATCH_SIZE, &idx) == BATCH_SIZE) { - unsigned int i; - - for (i = 0; i < BATCH_SIZE; i++) { - xsk_ring_prod__tx_desc(&xsk->tx, idx + i)->addr = - (frame_nb + i) << XSK_UMEM__DEFAULT_FRAME_SHIFT; - xsk_ring_prod__tx_desc(&xsk->tx, idx + i)->len = - sizeof(pkt_data) - 1; - } + while (xsk_ring_prod__reserve(&xsk->tx, opt_batch_size, &idx) < + opt_batch_size) { + complete_tx_only(xsk); + } - xsk_ring_prod__submit(&xsk->tx, BATCH_SIZE); - xsk->outstanding_tx += BATCH_SIZE; - frame_nb += BATCH_SIZE; - frame_nb %= NUM_FRAMES; + for (i = 0; i < opt_batch_size; i++) { + struct xdp_desc *tx_desc = xsk_ring_prod__tx_desc(&xsk->tx, + idx + i); + tx_desc->addr = (frame_nb + i) << XSK_UMEM__DEFAULT_FRAME_SHIFT; + tx_desc->len = sizeof(pkt_data) - 1; } + xsk_ring_prod__submit(&xsk->tx, opt_batch_size); + xsk->outstanding_tx += opt_batch_size; + frame_nb += opt_batch_size; + frame_nb %= NUM_FRAMES; complete_tx_only(xsk); } @@ -712,7 +718,7 @@ static void l2fwd(struct xsk_socket_info *xsk, struct pollfd *fds) complete_tx_l2fwd(xsk, fds); - rcvd = xsk_ring_cons__peek(&xsk->rx, BATCH_SIZE, &idx_rx); + rcvd = xsk_ring_cons__peek(&xsk->rx, opt_batch_size, &idx_rx); if (!rcvd) { if (xsk_ring_prod__needs_wakeup(&xsk->umem->fq)) ret = poll(fds, num_socks, opt_timeout); |