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authorDamjan Marion <damarion@cisco.com>2016-12-19 23:05:39 +0100
committerDamjan Marion <damarion@cisco.com>2016-12-28 12:25:14 +0100
commit7cd468a3d7dee7d6c92f69a0bb7061ae208ec727 (patch)
tree5de62f8dbd3a752f5a676ca600e43d2652d1ff1a /src/vnet/llc
parent696f1adec0df3b8f161862566dd9c86174302658 (diff)
Reorganize source tree to use single autotools instance
Change-Id: I7b51f88292e057c6443b12224486f2d0c9f8ae23 Signed-off-by: Damjan Marion <damarion@cisco.com>
Diffstat (limited to 'src/vnet/llc')
-rw-r--r--src/vnet/llc/llc.c241
-rw-r--r--src/vnet/llc/llc.h194
-rw-r--r--src/vnet/llc/node.c331
-rw-r--r--src/vnet/llc/pg.c113
4 files changed, 879 insertions, 0 deletions
diff --git a/src/vnet/llc/llc.c b/src/vnet/llc/llc.c
new file mode 100644
index 00000000000..975207b651d
--- /dev/null
+++ b/src/vnet/llc/llc.c
@@ -0,0 +1,241 @@
+/*
+ * Copyright (c) 2015 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.
+ */
+/*
+ * llc.c: llc support
+ *
+ * Copyright (c) 2010 Eliot Dresselhaus
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sublicense, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+ * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+ * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#include <vnet/vnet.h>
+#include <vnet/llc/llc.h>
+
+/* Global main structure. */
+llc_main_t llc_main;
+
+u8 *
+format_llc_protocol (u8 * s, va_list * args)
+{
+ llc_protocol_t p = va_arg (*args, u32);
+ llc_main_t *pm = &llc_main;
+ llc_protocol_info_t *pi = llc_get_protocol_info (pm, p);
+
+ if (pi)
+ s = format (s, "%s", pi->name);
+ else
+ s = format (s, "0x%02x", p);
+
+ return s;
+}
+
+u8 *
+format_llc_header_with_length (u8 * s, va_list * args)
+{
+ llc_main_t *pm = &llc_main;
+ llc_header_t *h = va_arg (*args, llc_header_t *);
+ u32 max_header_bytes = va_arg (*args, u32);
+ llc_protocol_t p = h->dst_sap;
+ uword indent, header_bytes;
+
+ header_bytes = llc_header_length (h);
+ if (max_header_bytes != 0 && header_bytes > max_header_bytes)
+ return format (s, "llc header truncated");
+
+ indent = format_get_indent (s);
+
+ s = format (s, "LLC %U -> %U",
+ format_llc_protocol, h->src_sap,
+ format_llc_protocol, h->dst_sap);
+
+ if (h->control != 0x03)
+ s = format (s, ", control 0x%x", llc_header_get_control (h));
+
+ if (max_header_bytes != 0 && header_bytes > max_header_bytes)
+ {
+ llc_protocol_info_t *pi = llc_get_protocol_info (pm, p);
+ vlib_node_t *node = vlib_get_node (pm->vlib_main, pi->node_index);
+ if (node->format_buffer)
+ s = format (s, "\n%U%U",
+ format_white_space, indent,
+ node->format_buffer, (void *) (h + 1),
+ max_header_bytes - header_bytes);
+ }
+
+ return s;
+}
+
+u8 *
+format_llc_header (u8 * s, va_list * args)
+{
+ llc_header_t *h = va_arg (*args, llc_header_t *);
+ return format (s, "%U", format_llc_header_with_length, h, 0);
+}
+
+/* Returns llc protocol as an int in host byte order. */
+uword
+unformat_llc_protocol (unformat_input_t * input, va_list * args)
+{
+ u8 *result = va_arg (*args, u8 *);
+ llc_main_t *pm = &llc_main;
+ int p, i;
+
+ /* Numeric type. */
+ if (unformat (input, "0x%x", &p) || unformat (input, "%d", &p))
+ {
+ if (p >= (1 << 8))
+ return 0;
+ *result = p;
+ return 1;
+ }
+
+ /* Named type. */
+ if (unformat_user (input, unformat_vlib_number_by_name,
+ pm->protocol_info_by_name, &i))
+ {
+ llc_protocol_info_t *pi = vec_elt_at_index (pm->protocol_infos, i);
+ *result = pi->protocol;
+ return 1;
+ }
+
+ return 0;
+}
+
+uword
+unformat_llc_header (unformat_input_t * input, va_list * args)
+{
+ u8 **result = va_arg (*args, u8 **);
+ llc_header_t _h, *h = &_h;
+ u8 p;
+
+ if (!unformat (input, "%U", unformat_llc_protocol, &p))
+ return 0;
+
+ h->src_sap = h->dst_sap = p;
+ h->control = 0x3;
+
+ /* Add header to result. */
+ {
+ void *p;
+ u32 n_bytes = sizeof (h[0]);
+
+ vec_add2 (*result, p, n_bytes);
+ clib_memcpy (p, h, n_bytes);
+ }
+
+ return 1;
+}
+
+static u8 *
+llc_build_rewrite (vnet_main_t * vnm,
+ u32 sw_if_index,
+ vnet_link_t link_type, const void *dst_address)
+{
+ llc_header_t *h;
+ u8 *rewrite = NULL;
+ llc_protocol_t protocol;
+
+ switch (link_type)
+ {
+#define _(a,b) case VNET_LINK_##a: protocol = LLC_PROTOCOL_##b; break
+ _(IP4, ip4);
+#undef _
+ default:
+ return (NULL);
+ }
+
+ vec_validate (rewrite, sizeof (*h) - 1);
+ h = (llc_header_t *) rewrite;
+ h->src_sap = h->dst_sap = protocol;
+ h->control = 0x3;
+
+ return (rewrite);
+}
+
+/* *INDENT-OFF* */
+VNET_HW_INTERFACE_CLASS (llc_hw_interface_class) = {
+ .name = "LLC",
+ .format_header = format_llc_header_with_length,
+ .unformat_header = unformat_llc_header,
+ .build_rewrite = llc_build_rewrite,
+};
+/* *INDENT-ON* */
+
+static void
+add_protocol (llc_main_t * pm, llc_protocol_t protocol, char *protocol_name)
+{
+ llc_protocol_info_t *pi;
+ u32 i;
+
+ vec_add2 (pm->protocol_infos, pi, 1);
+ i = pi - pm->protocol_infos;
+
+ pi->name = protocol_name;
+ pi->protocol = protocol;
+ pi->next_index = pi->node_index = ~0;
+
+ hash_set (pm->protocol_info_by_protocol, protocol, i);
+ hash_set_mem (pm->protocol_info_by_name, pi->name, i);
+}
+
+static clib_error_t *
+llc_init (vlib_main_t * vm)
+{
+ clib_error_t *error;
+ llc_main_t *pm = &llc_main;
+
+ memset (pm, 0, sizeof (pm[0]));
+ pm->vlib_main = vm;
+
+ pm->protocol_info_by_name = hash_create_string (0, sizeof (uword));
+ pm->protocol_info_by_protocol = hash_create (0, sizeof (uword));
+
+#define _(f,n) add_protocol (pm, LLC_PROTOCOL_##f, #f);
+ foreach_llc_protocol;
+#undef _
+
+ if ((error = vlib_call_init_function (vm, snap_init)))
+ return error;
+
+ return vlib_call_init_function (vm, llc_input_init);
+}
+
+VLIB_INIT_FUNCTION (llc_init);
+
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */
diff --git a/src/vnet/llc/llc.h b/src/vnet/llc/llc.h
new file mode 100644
index 00000000000..0b85f5d8a8b
--- /dev/null
+++ b/src/vnet/llc/llc.h
@@ -0,0 +1,194 @@
+/*
+ * Copyright (c) 2015 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.
+ */
+/*
+ * llc.h: LLC definitions
+ *
+ * Copyright (c) 2008 Eliot Dresselhaus
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sublicense, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+ * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+ * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#ifndef included_llc_h
+#define included_llc_h
+
+#include <vnet/vnet.h>
+#include <vnet/pg/pg.h>
+
+/* Protocol (SSAP/DSAP) types. */
+#define foreach_llc_protocol \
+ _ (null, 0x0) \
+ _ (sublayer, 0x2) \
+ _ (sna_path_control, 0x4) \
+ _ (ip4, 0x6) \
+ _ (sna1, 0x8) \
+ _ (sna2, 0xc) \
+ _ (sna3, 0x40) \
+ _ (proway_lan, 0x0e) \
+ _ (netware1, 0x10) \
+ _ (netware2, 0xe0) \
+ _ (osi_layer1, 0x14) \
+ _ (osi_layer2, 0x20) \
+ _ (osi_layer3, 0x34) \
+ _ (osi_layer4, 0x54) \
+ _ (osi_layer5, 0xfe) \
+ _ (bpdu, 0x42) \
+ _ (arp, 0x98) \
+ _ (snap, 0xaa) \
+ _ (vines1, 0xba) \
+ _ (vines2, 0xbc) \
+ _ (netbios, 0xf0) \
+ _ (global_dsap, 0xff)
+
+typedef enum
+{
+#define _(f,n) LLC_PROTOCOL_##f = n,
+ foreach_llc_protocol
+#undef _
+} llc_protocol_t;
+
+typedef struct
+{
+#define LLC_DST_SAP_IS_GROUP (1 << 0)
+#define LLC_SRC_SAP_IS_RESPONSE (1 << 0)
+ u8 dst_sap, src_sap;
+
+ /* Control byte.
+ [0] 1 => supervisory 0 => information
+ [1] unnumbered frame. */
+ u8 control;
+
+ /* Only present if (control & 3) != 3. */
+ u8 extended_control[0];
+} llc_header_t;
+
+always_inline u16
+llc_header_get_control (llc_header_t * h)
+{
+ u16 r = h->control;
+ return r | ((((r & 3) != 3) ? h->extended_control[0] : 0) << 8);
+}
+
+always_inline u8
+llc_header_length (llc_header_t * h)
+{
+ return ((h->control & 3) != 3 ? 4 : 3);
+}
+
+typedef struct
+{
+ /* Name (a c string). */
+ char *name;
+
+ /* LLC protocol (SAP type). */
+ llc_protocol_t protocol;
+
+ /* Node which handles this type. */
+ u32 node_index;
+
+ /* Next index for this type. */
+ u32 next_index;
+} llc_protocol_info_t;
+
+#define foreach_llc_error \
+ _ (NONE, "no error") \
+ _ (UNKNOWN_PROTOCOL, "unknown llc ssap/dsap") \
+ _ (UNKNOWN_CONTROL, "control != 0x3")
+
+typedef enum
+{
+#define _(f,s) LLC_ERROR_##f,
+ foreach_llc_error
+#undef _
+ LLC_N_ERROR,
+} llc_error_t;
+
+typedef struct
+{
+ vlib_main_t *vlib_main;
+
+ llc_protocol_info_t *protocol_infos;
+
+ /* Hash tables mapping name/protocol to protocol info index. */
+ uword *protocol_info_by_name, *protocol_info_by_protocol;
+
+ /* llc-input next index indexed by protocol. */
+ u8 input_next_by_protocol[256];
+} llc_main_t;
+
+always_inline llc_protocol_info_t *
+llc_get_protocol_info (llc_main_t * m, llc_protocol_t protocol)
+{
+ uword *p = hash_get (m->protocol_info_by_protocol, protocol);
+ return p ? vec_elt_at_index (m->protocol_infos, p[0]) : 0;
+}
+
+extern llc_main_t llc_main;
+
+/* Register given node index to take input for given llc type. */
+void
+llc_register_input_protocol (vlib_main_t * vm,
+ llc_protocol_t protocol, u32 node_index);
+
+void llc_set_adjacency (vnet_rewrite_header_t * rw,
+ uword max_data_bytes, llc_protocol_t protocol);
+
+format_function_t format_llc_protocol;
+format_function_t format_llc_header;
+format_function_t format_llc_header_with_length;
+
+/* Parse llc protocol as 0xXXXX or protocol name. */
+unformat_function_t unformat_llc_protocol;
+
+/* Parse llc header. */
+unformat_function_t unformat_llc_header;
+unformat_function_t unformat_pg_llc_header;
+
+always_inline void
+llc_setup_node (vlib_main_t * vm, u32 node_index)
+{
+ vlib_node_t *n = vlib_get_node (vm, node_index);
+ pg_node_t *pn = pg_get_node (node_index);
+
+ n->format_buffer = format_llc_header_with_length;
+ n->unformat_buffer = unformat_llc_header;
+ pn->unformat_edit = unformat_pg_llc_header;
+}
+
+#endif /* included_llc_h */
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */
diff --git a/src/vnet/llc/node.c b/src/vnet/llc/node.c
new file mode 100644
index 00000000000..60b5c13420c
--- /dev/null
+++ b/src/vnet/llc/node.c
@@ -0,0 +1,331 @@
+/*
+ * Copyright (c) 2015 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.
+ */
+/*
+ * llc_node.c: llc packet processing
+ *
+ * Copyright (c) 2010 Eliot Dresselhaus
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sublicense, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+ * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+ * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#include <vlib/vlib.h>
+#include <vnet/pg/pg.h>
+#include <vnet/llc/llc.h>
+
+#define foreach_llc_input_next \
+ _ (PUNT, "error-punt") \
+ _ (DROP, "error-drop")
+
+typedef enum
+{
+#define _(s,n) LLC_INPUT_NEXT_##s,
+ foreach_llc_input_next
+#undef _
+ LLC_INPUT_N_NEXT,
+} llc_input_next_t;
+
+typedef struct
+{
+ u8 packet_data[32];
+} llc_input_trace_t;
+
+static u8 *
+format_llc_input_trace (u8 * s, va_list * va)
+{
+ CLIB_UNUSED (vlib_main_t * vm) = va_arg (*va, vlib_main_t *);
+ CLIB_UNUSED (vlib_node_t * node) = va_arg (*va, vlib_node_t *);
+ llc_input_trace_t *t = va_arg (*va, llc_input_trace_t *);
+
+ s = format (s, "%U", format_llc_header, t->packet_data);
+
+ return s;
+}
+
+static uword
+llc_input (vlib_main_t * vm,
+ vlib_node_runtime_t * node, vlib_frame_t * from_frame)
+{
+ llc_main_t *lm = &llc_main;
+ u32 n_left_from, next_index, *from, *to_next;
+
+ from = vlib_frame_vector_args (from_frame);
+ n_left_from = from_frame->n_vectors;
+
+ if (node->flags & VLIB_NODE_FLAG_TRACE)
+ vlib_trace_frame_buffers_only (vm, node,
+ from,
+ n_left_from,
+ sizeof (from[0]),
+ sizeof (llc_input_trace_t));
+
+ 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 >= 4 && n_left_to_next >= 2)
+ {
+ u32 bi0, bi1;
+ vlib_buffer_t *b0, *b1;
+ llc_header_t *h0, *h1;
+ u8 next0, next1, len0, len1, enqueue_code;
+
+ /* Prefetch next iteration. */
+ {
+ vlib_buffer_t *b2, *b3;
+
+ b2 = vlib_get_buffer (vm, from[2]);
+ b3 = vlib_get_buffer (vm, from[3]);
+
+ vlib_prefetch_buffer_header (b2, LOAD);
+ vlib_prefetch_buffer_header (b3, LOAD);
+
+ CLIB_PREFETCH (b2->data, sizeof (h0[0]), LOAD);
+ CLIB_PREFETCH (b3->data, sizeof (h1[0]), LOAD);
+ }
+
+ bi0 = from[0];
+ bi1 = from[1];
+ to_next[0] = bi0;
+ to_next[1] = bi1;
+ from += 2;
+ to_next += 2;
+ n_left_to_next -= 2;
+ n_left_from -= 2;
+
+ b0 = vlib_get_buffer (vm, bi0);
+ b1 = vlib_get_buffer (vm, bi1);
+
+ h0 = (void *) (b0->data + b0->current_data);
+ h1 = (void *) (b1->data + b1->current_data);
+
+ len0 = llc_header_length (h0);
+ len1 = llc_header_length (h1);
+
+ b0->current_data += len0;
+ b1->current_data += len1;
+
+ b0->current_length -= len0;
+ b1->current_length -= len1;
+
+ next0 = lm->input_next_by_protocol[h0->dst_sap];
+ next1 = lm->input_next_by_protocol[h1->dst_sap];
+
+ b0->error =
+ node->errors[next0 ==
+ LLC_INPUT_NEXT_DROP ? LLC_ERROR_UNKNOWN_PROTOCOL :
+ LLC_ERROR_NONE];
+ b1->error =
+ node->errors[next1 ==
+ LLC_INPUT_NEXT_DROP ? LLC_ERROR_UNKNOWN_PROTOCOL :
+ LLC_ERROR_NONE];
+
+ enqueue_code = (next0 != next_index) + 2 * (next1 != next_index);
+
+ if (PREDICT_FALSE (enqueue_code != 0))
+ {
+ switch (enqueue_code)
+ {
+ case 1:
+ /* A B A */
+ to_next[-2] = bi1;
+ to_next -= 1;
+ n_left_to_next += 1;
+ vlib_set_next_frame_buffer (vm, node, next0, bi0);
+ break;
+
+ case 2:
+ /* A A B */
+ to_next -= 1;
+ n_left_to_next += 1;
+ vlib_set_next_frame_buffer (vm, node, next1, bi1);
+ break;
+
+ case 3:
+ /* A B B or A B C */
+ to_next -= 2;
+ n_left_to_next += 2;
+ vlib_set_next_frame_buffer (vm, node, next0, bi0);
+ vlib_set_next_frame_buffer (vm, node, next1, bi1);
+ if (next0 == next1)
+ {
+ vlib_put_next_frame (vm, node, next_index,
+ n_left_to_next);
+ next_index = next1;
+ 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 bi0;
+ vlib_buffer_t *b0;
+ llc_header_t *h0;
+ u8 next0, len0;
+
+ 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);
+
+ h0 = (void *) (b0->data + b0->current_data);
+
+ len0 = llc_header_length (h0);
+
+ b0->current_data += len0;
+
+ b0->current_length -= len0;
+
+ next0 = lm->input_next_by_protocol[h0->dst_sap];
+
+ b0->error =
+ node->errors[next0 ==
+ LLC_INPUT_NEXT_DROP ? LLC_ERROR_UNKNOWN_PROTOCOL :
+ LLC_ERROR_NONE];
+
+ /* Sent packet to wrong next? */
+ if (PREDICT_FALSE (next0 != next_index))
+ {
+ /* Return old frame; remove incorrectly enqueued packet. */
+ vlib_put_next_frame (vm, node, next_index, n_left_to_next + 1);
+
+ /* Send to correct next. */
+ next_index = next0;
+ vlib_get_next_frame (vm, node, next_index,
+ to_next, n_left_to_next);
+
+ to_next[0] = bi0;
+ to_next += 1;
+ n_left_to_next -= 1;
+ }
+ }
+
+ vlib_put_next_frame (vm, node, next_index, n_left_to_next);
+ }
+
+ return from_frame->n_vectors;
+}
+
+static char *llc_error_strings[] = {
+#define _(f,s) s,
+ foreach_llc_error
+#undef _
+};
+
+/* *INDENT-OFF* */
+VLIB_REGISTER_NODE (llc_input_node) = {
+ .function = llc_input,
+ .name = "llc-input",
+ /* Takes a vector of packets. */
+ .vector_size = sizeof (u32),
+
+ .n_errors = LLC_N_ERROR,
+ .error_strings = llc_error_strings,
+
+ .n_next_nodes = LLC_INPUT_N_NEXT,
+ .next_nodes = {
+#define _(s,n) [LLC_INPUT_NEXT_##s] = n,
+ foreach_llc_input_next
+#undef _
+ },
+
+ .format_buffer = format_llc_header_with_length,
+ .format_trace = format_llc_input_trace,
+ .unformat_buffer = unformat_llc_header,
+};
+/* *INDENT-ON* */
+
+static clib_error_t *
+llc_input_init (vlib_main_t * vm)
+{
+ llc_main_t *lm = &llc_main;
+
+ {
+ clib_error_t *error = vlib_call_init_function (vm, llc_init);
+ if (error)
+ clib_error_report (error);
+ }
+
+ llc_setup_node (vm, llc_input_node.index);
+
+ {
+ int i;
+ for (i = 0; i < ARRAY_LEN (lm->input_next_by_protocol); i++)
+ lm->input_next_by_protocol[i] = LLC_INPUT_NEXT_DROP;
+ }
+
+ return 0;
+}
+
+VLIB_INIT_FUNCTION (llc_input_init);
+
+void
+llc_register_input_protocol (vlib_main_t * vm,
+ llc_protocol_t protocol, u32 node_index)
+{
+ llc_main_t *lm = &llc_main;
+ llc_protocol_info_t *pi;
+
+ {
+ clib_error_t *error = vlib_call_init_function (vm, llc_input_init);
+ if (error)
+ clib_error_report (error);
+ /* Otherwise, osi_input_init will wipe out e.g. the snap init */
+ error = vlib_call_init_function (vm, osi_input_init);
+ if (error)
+ clib_error_report (error);
+ }
+
+ pi = llc_get_protocol_info (lm, protocol);
+ pi->node_index = node_index;
+ pi->next_index = vlib_node_add_next (vm, llc_input_node.index, node_index);
+
+ lm->input_next_by_protocol[protocol] = pi->next_index;
+}
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */
diff --git a/src/vnet/llc/pg.c b/src/vnet/llc/pg.c
new file mode 100644
index 00000000000..ad18a4b05c7
--- /dev/null
+++ b/src/vnet/llc/pg.c
@@ -0,0 +1,113 @@
+/*
+ * Copyright (c) 2015 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.
+ */
+/*
+ * llc_pg.c: packet generator llc interface
+ *
+ * Copyright (c) 2008 Eliot Dresselhaus
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sublicense, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+ * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+ * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#include <vlib/vlib.h>
+#include <vnet/pg/pg.h>
+#include <vnet/llc/llc.h>
+
+typedef struct
+{
+ pg_edit_t dst_sap;
+ pg_edit_t src_sap;
+ pg_edit_t control;
+} pg_llc_header_t;
+
+static inline void
+pg_llc_header_init (pg_llc_header_t * e)
+{
+ pg_edit_init (&e->dst_sap, llc_header_t, dst_sap);
+ pg_edit_init (&e->src_sap, llc_header_t, src_sap);
+ pg_edit_init (&e->control, llc_header_t, control);
+}
+
+uword
+unformat_pg_llc_header (unformat_input_t * input, va_list * args)
+{
+ pg_stream_t *s = va_arg (*args, pg_stream_t *);
+ pg_llc_header_t *h;
+ u32 group_index, error;
+
+ h = pg_create_edit_group (s, sizeof (h[0]), sizeof (llc_header_t),
+ &group_index);
+ pg_llc_header_init (h);
+
+ pg_edit_set_fixed (&h->control, 0x03);
+
+ error = 1;
+ if (!unformat (input, "%U -> %U",
+ unformat_pg_edit,
+ unformat_llc_protocol, &h->src_sap, &h->dst_sap))
+ goto done;
+
+ {
+ llc_main_t *pm = &llc_main;
+ llc_protocol_info_t *pi = 0;
+ pg_node_t *pg_node = 0;
+
+ if (h->dst_sap.type == PG_EDIT_FIXED)
+ {
+ u8 t = *h->dst_sap.values[PG_EDIT_LO];
+ pi = llc_get_protocol_info (pm, t);
+ if (pi && pi->node_index != ~0)
+ pg_node = pg_get_node (pi->node_index);
+ }
+
+ if (pg_node && pg_node->unformat_edit
+ && unformat_user (input, pg_node->unformat_edit, s))
+ ;
+
+ else if (!unformat_user (input, unformat_pg_payload, s))
+ goto done;
+ }
+
+ error = 0;
+done:
+ if (error)
+ pg_free_edit_group (s);
+ return error == 0;
+}
+
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */