classify: use vector code even when data is not aligned - vpp

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author	Damjan Marion <damarion@cisco.com>	2019-09-25 00:25:36 +0200
committer	Dave Barach <openvpp@barachs.net>	2019-09-26 11:37:30 +0000
commit	8304933922620cef005b788a36a4d3f2eab45bb5 (patch)
tree	9b873ff3da92bcae785a7a67d7917193ee901b39 /src/vppinfra/vector.h
parent	6eb009ac023799e4ee1b75d759d726622c39de78 (diff)

classify: use vector code even when data is not aligned

Type: feature Change-Id: I8f5f4841965beb13ebc8c2a37ce0dc331c920109 Signed-off-by: Damjan Marion <damarion@cisco.com>

Diffstat (limited to 'src/vppinfra/vector.h')

-rw-r--r--

src/vppinfra/vector.h

1 files changed, 2 insertions, 0 deletions

/* * Copyright (c) 2016 Cisco and/or its affiliates. * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at: * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ #include <vnet/bier/bier_disp_entry.h> #include <vnet/bier/bier_hdr_inlines.h> /** * @brief A struct to hold tracing information for the MPLS label imposition * node. */ typedef struct bier_disp_dispatch_trace_t_ { /** * BIER payload protocol used to dispatch */ bier_hdr_proto_id_t pproto; /** * RPF-ID packet is tagged with */ u32 rpf_id; } bier_disp_dispatch_trace_t; always_inline uword bier_disp_dispatch_inline (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * from_frame) { u32 n_left_from, next_index, * from, * to_next; from = vlib_frame_vector_args (from_frame); n_left_from = from_frame->n_vectors; next_index = node->cached_next_index; while (n_left_from > 0) { u32 n_left_to_next; vlib_get_next_frame(vm, node, next_index, to_next, n_left_to_next); while (n_left_from > 0 && n_left_to_next > 0) { bier_hdr_proto_id_t pproto0; bier_disp_entry_t *bde0; u32 next0, bi0, bdei0; const dpo_id_t *dpo0; vlib_buffer_t * b0; bier_hdr_t *hdr0; u32 entropy0; bi0 = from[0]; to_next[0] = bi0; from += 1; to_next += 1; n_left_from -= 1; n_left_to_next -= 1; b0 = vlib_get_buffer (vm, bi0); bdei0 = vnet_buffer(b0)->ip.adj_index[VLIB_TX]; hdr0 = vlib_buffer_get_current(b0); bde0 = bier_disp_entry_get(bdei0); /* * header is in network order - flip it, we are about to * consume it anyway */ bier_hdr_ntoh(hdr0); pproto0 = bier_hdr_get_proto_id(hdr0); entropy0 = bier_hdr_get_entropy(hdr0); /* * strip the header and copy the entropy value into * the packets flow-hash field * DSCP mumble mumble... */ vlib_buffer_advance(b0, (vnet_buffer(b0)->mpls.bier.n_bytes + sizeof(*hdr0))); vnet_buffer(b0)->ip.flow_hash = entropy0; /* * use the payload proto to dispatch to the * correct stacked DPO. */ dpo0 = &bde0->bde_fwd[pproto0].bde_dpo; next0 = dpo0->dpoi_next_node; vnet_buffer(b0)->ip.adj_index[VLIB_TX] = dpo0->dpoi_index; vnet_buffer(b0)->ip.rpf_id = bde0->bde_fwd[pproto0].bde_rpf_id; if (PREDICT_FALSE(b0->flags & VLIB_BUFFER_IS_TRACED)) { bier_disp_dispatch_trace_t *tr = vlib_add_trace (vm, node, b0, sizeof (*tr)); tr->pproto = pproto0; tr->rpf_id = vnet_buffer(b0)->ip.rpf_id; } vlib_validate_buffer_enqueue_x1(vm, node, next_index, to_next, n_left_to_next, bi0, next0); } vlib_put_next_frame (vm, node, next_index, n_left_to_next); } return from_frame->n_vectors; } static u8 * format_bier_disp_dispatch_trace (u8 * s, va_list * args) { CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *); CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *); bier_disp_dispatch_trace_t * t; t = va_arg (*args, bier_disp_dispatch_trace_t *); s = format (s, "%U", format_bier_hdr_proto, t->pproto); return (s); } static uword bier_disp_dispatch (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * frame) { return (bier_disp_dispatch_inline(vm, node, frame)); } VLIB_REGISTER_NODE (bier_disp_dispatch_node) = { .function = bier_disp_dispatch, .name = "bier-disp-dispatch", .vector_size = sizeof (u32), .format_trace = format_bier_disp_dispatch_trace, .n_next_nodes = 1, .next_nodes = { [0] = "bier-drop", } }; VLIB_NODE_FUNCTION_MULTIARCH (bier_disp_dispatch_node, bier_disp_dispatch)


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