From 661842c46de2151758083b2ead605920b4770c2b Mon Sep 17 00:00:00 2001 From: Magnus Karlsson Date: Thu, 7 Nov 2019 18:47:39 +0100 Subject: samples/bpf: Use Rx-only and Tx-only sockets in xdpsock Use Rx-only sockets for the rxdrop sample and Tx-only sockets for the txpush sample in the xdpsock application. This so that we exercise and show case these socket types too. Signed-off-by: Magnus Karlsson Signed-off-by: Alexei Starovoitov Tested-by: William Tu Acked-by: Jonathan Lemon Link: https://lore.kernel.org/bpf/1573148860-30254-5-git-send-email-magnus.karlsson@intel.com --- samples/bpf/xdpsock_user.c | 41 +++++++++++++++++++++++++++++------------ 1 file changed, 29 insertions(+), 12 deletions(-) (limited to 'samples') diff --git a/samples/bpf/xdpsock_user.c b/samples/bpf/xdpsock_user.c index d3dba93dbab3..a1f96e55e43a 100644 --- a/samples/bpf/xdpsock_user.c +++ b/samples/bpf/xdpsock_user.c @@ -291,8 +291,7 @@ static struct xsk_umem_info *xsk_configure_umem(void *buffer, u64 size) .frame_headroom = XSK_UMEM__DEFAULT_FRAME_HEADROOM, .flags = opt_umem_flags }; - int ret, i; - u32 idx; + int ret; umem = calloc(1, sizeof(*umem)); if (!umem) @@ -300,10 +299,18 @@ static struct xsk_umem_info *xsk_configure_umem(void *buffer, u64 size) ret = xsk_umem__create(&umem->umem, buffer, size, &umem->fq, &umem->cq, &cfg); - if (ret) exit_with_error(-ret); + umem->buffer = buffer; + return umem; +} + +static void xsk_populate_fill_ring(struct xsk_umem_info *umem) +{ + int ret, i; + u32 idx; + ret = xsk_ring_prod__reserve(&umem->fq, XSK_RING_PROD__DEFAULT_NUM_DESCS, &idx); if (ret != XSK_RING_PROD__DEFAULT_NUM_DESCS) @@ -312,15 +319,15 @@ static struct xsk_umem_info *xsk_configure_umem(void *buffer, u64 size) *xsk_ring_prod__fill_addr(&umem->fq, idx++) = i * opt_xsk_frame_size; xsk_ring_prod__submit(&umem->fq, XSK_RING_PROD__DEFAULT_NUM_DESCS); - - umem->buffer = buffer; - return umem; } -static struct xsk_socket_info *xsk_configure_socket(struct xsk_umem_info *umem) +static struct xsk_socket_info *xsk_configure_socket(struct xsk_umem_info *umem, + bool rx, bool tx) { struct xsk_socket_config cfg; struct xsk_socket_info *xsk; + struct xsk_ring_cons *rxr; + struct xsk_ring_prod *txr; int ret; xsk = calloc(1, sizeof(*xsk)); @@ -337,8 +344,10 @@ static struct xsk_socket_info *xsk_configure_socket(struct xsk_umem_info *umem) cfg.xdp_flags = opt_xdp_flags; cfg.bind_flags = opt_xdp_bind_flags; - ret = xsk_socket__create(&xsk->xsk, opt_if, opt_queue, - umem->umem, &xsk->rx, &xsk->tx, &cfg); + rxr = rx ? &xsk->rx : NULL; + txr = tx ? &xsk->tx : NULL; + ret = xsk_socket__create(&xsk->xsk, opt_if, opt_queue, umem->umem, + rxr, txr, &cfg); if (ret) exit_with_error(-ret); @@ -783,6 +792,7 @@ static void enter_xsks_into_map(struct bpf_object *obj) int main(int argc, char **argv) { struct rlimit r = {RLIM_INFINITY, RLIM_INFINITY}; + bool rx = false, tx = false; struct xsk_umem_info *umem; struct bpf_object *obj; pthread_t pt; @@ -811,11 +821,18 @@ int main(int argc, char **argv) /* Create sockets... */ umem = xsk_configure_umem(bufs, NUM_FRAMES * opt_xsk_frame_size); + if (opt_bench == BENCH_RXDROP || opt_bench == BENCH_L2FWD) { + rx = true; + xsk_populate_fill_ring(umem); + } + if (opt_bench == BENCH_L2FWD || opt_bench == BENCH_TXONLY) + tx = true; for (i = 0; i < opt_num_xsks; i++) - xsks[num_socks++] = xsk_configure_socket(umem); + xsks[num_socks++] = xsk_configure_socket(umem, rx, tx); - for (i = 0; i < NUM_FRAMES; i++) - gen_eth_frame(umem, i * opt_xsk_frame_size); + if (opt_bench == BENCH_TXONLY) + for (i = 0; i < NUM_FRAMES; i++) + gen_eth_frame(umem, i * opt_xsk_frame_size); if (opt_num_xsks > 1 && opt_bench != BENCH_TXONLY) enter_xsks_into_map(obj); -- cgit v1.2.3