/* API message handler */ static void vl_api_nsim_configure_t_handler (vl_api_nsim_configure_t * mp) { vl_api_nsim_configure_reply_t *rmp; nsim_main_t *nsm = &nsim_main; f64 delay, bandwidth, packet_size, drop_fraction; u32 packets_per_drop; int rv; delay = ((f64) (ntohl (mp->delay_in_usec))) * 1e-6; bandwidth = (f64) (clib_net_to_host_u64 (mp->bandwidth_in_bits_per_second)); packet_size = (f64) (ntohl (mp->average_packet_size)); packets_per_drop = ntohl (mp->packets_per_drop); if (packets_per_drop > 0) drop_fraction = 1.0 / (f64) (packets_per_drop); else drop_fraction = 0.0; rv = nsim_configure (nsm, bandwidth, delay, packet_size, drop_fraction); REPLY_MACRO (VL_API_NSIM_CONFIGURE_REPLY); }
/* * ip6_sixrd */ static uword ip6_sixrd (vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *frame) { u32 n_left_from, *from, next_index, *to_next, n_left_to_next; vlib_node_runtime_t *error_node = vlib_node_get_runtime(vm, ip6_sixrd_node.index); u32 encap = 0; from = vlib_frame_vector_args(frame); n_left_from = frame->n_vectors; next_index = node->cached_next_index; while (n_left_from > 0) { vlib_get_next_frame(vm, node, next_index, to_next, n_left_to_next); while (n_left_from > 0 && n_left_to_next > 0) { u32 pi0; vlib_buffer_t *p0; sixrd_domain_t *d0; u8 error0 = SIXRD_ERROR_NONE; ip6_header_t *ip60; ip4_header_t *ip4h0; u32 next0 = IP6_SIXRD_NEXT_IP4_LOOKUP; u32 sixrd_domain_index0 = ~0; pi0 = to_next[0] = from[0]; from += 1; n_left_from -= 1; to_next +=1; n_left_to_next -= 1; p0 = vlib_get_buffer(vm, pi0); ip60 = vlib_buffer_get_current(p0); // p0->current_length = clib_net_to_host_u16(ip40->length); d0 = ip6_sixrd_get_domain(vnet_buffer(p0)->ip.adj_index[VLIB_TX], &sixrd_domain_index0); ASSERT(d0); /* SIXRD calc */ u64 dal60 = clib_net_to_host_u64(ip60->dst_address.as_u64[0]); u32 da40 = sixrd_get_addr(d0, dal60); u16 len = clib_net_to_host_u16(ip60->payload_length) + 60; if (da40 == 0) error0 = SIXRD_ERROR_UNKNOWN; /* construct ipv4 header */ vlib_buffer_advance(p0, - (sizeof(ip4_header_t))); ip4h0 = vlib_buffer_get_current(p0); vnet_buffer(p0)->sw_if_index[VLIB_TX] = (u32)~0; ip4h0->ip_version_and_header_length = 0x45; ip4h0->tos = 0; ip4h0->length = clib_host_to_net_u16(len); ip4h0->fragment_id = 0; ip4h0->flags_and_fragment_offset = 0; ip4h0->ttl = 0x40; ip4h0->protocol = IP_PROTOCOL_IPV6; ip4h0->src_address = d0->ip4_src; ip4h0->dst_address.as_u32 = clib_host_to_net_u32(da40); ip4h0->checksum = ip4_header_checksum(ip4h0); next0 = error0 == SIXRD_ERROR_NONE ? IP6_SIXRD_NEXT_IP4_LOOKUP : IP6_SIXRD_NEXT_DROP; if (PREDICT_FALSE(p0->flags & VLIB_BUFFER_IS_TRACED)) { sixrd_trace_t *tr = vlib_add_trace(vm, node, p0, sizeof(*tr)); tr->sixrd_domain_index = sixrd_domain_index0; } p0->error = error_node->errors[error0]; if (PREDICT_TRUE(error0 == SIXRD_ERROR_NONE)) encap++; vlib_validate_buffer_enqueue_x1(vm, node, next_index, to_next, n_left_to_next, pi0, next0); } vlib_put_next_frame(vm, node, next_index, n_left_to_next); } vlib_node_increment_counter(vm, ip6_sixrd_node.index, SIXRD_ERROR_ENCAPSULATED, encap); return frame->n_vectors; }