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-rw-r--r--nsh-plugin/nsh/nsh.api2
-rw-r--r--nsh-plugin/nsh/nsh.c40
-rw-r--r--nsh-plugin/nsh/nsh.h5
-rw-r--r--nsh-plugin/nsh/nsh_pop.c366
4 files changed, 399 insertions, 14 deletions
diff --git a/nsh-plugin/nsh/nsh.api b/nsh-plugin/nsh/nsh.api
index ee3f91f..1ef3c7b 100644
--- a/nsh-plugin/nsh/nsh.api
+++ b/nsh-plugin/nsh/nsh.api
@@ -88,6 +88,7 @@ define nsh_add_del_map {
u32 mapped_nsp_nsi;
u32 nsh_action;
u32 sw_if_index;
+ u32 rx_sw_if_index;
u32 next_node;
};
@@ -114,5 +115,6 @@ define nsh_map_details {
u32 mapped_nsp_nsi;
u32 nsh_action;
u32 sw_if_index;
+ u32 rx_sw_if_index;
u32 next_node;
};
diff --git a/nsh-plugin/nsh/nsh.c b/nsh-plugin/nsh/nsh.c
index bfa75fd..c97856c 100644
--- a/nsh-plugin/nsh/nsh.c
+++ b/nsh-plugin/nsh/nsh.c
@@ -234,10 +234,6 @@ nsh_md2_unregister_option (u16 class,
return (0);
}
-typedef struct {
- u8 trace_data[256];
-} nsh_input_trace_t;
-
/* format from network order */
u8 * format_nsh_header (u8 * s, va_list * args)
{
@@ -507,6 +503,7 @@ int nsh_add_del_map (nsh_add_del_map_args_t *a, u32 * map_indexp)
map->mapped_nsp_nsi = a->map.mapped_nsp_nsi;
map->nsh_action = a->map.nsh_action;
map->sw_if_index = a->map.sw_if_index;
+ map->rx_sw_if_index = a->map.rx_sw_if_index;
map->next_node = a->map.next_node;
@@ -666,6 +663,7 @@ nsh_add_del_map_command_fn (vlib_main_t * vm,
int nsh_action_set = 0;
u32 next_node = ~0;
u32 sw_if_index = ~0; // temporary requirement to get this moved over to NSHSFC
+ u32 rx_sw_if_index = ~0; // temporary requirement to get this moved over to NSHSFC
nsh_add_del_map_args_t _a, * a = &_a;
u32 map_index;
int rv;
@@ -698,7 +696,7 @@ nsh_add_del_map_command_fn (vlib_main_t * vm,
next_node = NSH_NODE_NEXT_ENCAP_VXLAN4;
else if (unformat (line_input, "encap-vxlan6-intf %d", &sw_if_index))
next_node = NSH_NODE_NEXT_ENCAP_VXLAN6;
- else if (unformat (line_input, "encap-none %d", &sw_if_index))
+ else if (unformat (line_input, "encap-none %d %d", &sw_if_index, &rx_sw_if_index))
next_node = NSH_NODE_NEXT_DECAP_ETH_INPUT;
else
return clib_error_return (0, "parse error: '%U'",
@@ -717,7 +715,7 @@ nsh_add_del_map_command_fn (vlib_main_t * vm,
return clib_error_return (0, "nsh_action required: swap|push|pop.");
if (next_node == ~0)
- return clib_error_return (0, "must specific action: [encap-gre-intf <nn> | encap-vxlan-gpe-intf <nn> | encap-lisp-gpe-intf <nn> | encap-none <rx_sw_if_index>]");
+ return clib_error_return (0, "must specific action: [encap-gre-intf <nn> | encap-vxlan-gpe-intf <nn> | encap-lisp-gpe-intf <nn> | encap-none <tx_sw_if_index> <rx_sw_if_index>]");
memset (a, 0, sizeof (*a));
@@ -727,6 +725,7 @@ nsh_add_del_map_command_fn (vlib_main_t * vm,
a->map.mapped_nsp_nsi = (mapped_nsp<< NSH_NSP_SHIFT) | mapped_nsi;
a->map.nsh_action = nsh_action;
a->map.sw_if_index = sw_if_index;
+ a->map.rx_sw_if_index = rx_sw_if_index;
a->map.next_node = next_node;
rv = nsh_add_del_map(a, &map_index);
@@ -793,6 +792,7 @@ static void vl_api_nsh_add_del_map_t_handler
a->map.mapped_nsp_nsi = ntohl(mp->mapped_nsp_nsi);
a->map.nsh_action = ntohl(mp->nsh_action);
a->map.sw_if_index = ntohl(mp->sw_if_index);
+ a->map.rx_sw_if_index = ntohl(mp->rx_sw_if_index);
a->map.next_node = ntohl(mp->next_node);
rv = nsh_add_del_map (a, &map_index);
@@ -1309,6 +1309,7 @@ static void send_nsh_map_details
rmp->mapped_nsp_nsi = htonl(t->mapped_nsp_nsi);
rmp->nsh_action = htonl(t->nsh_action);
rmp->sw_if_index = htonl(t->sw_if_index);
+ rmp->rx_sw_if_index = htonl(t->rx_sw_if_index);
rmp->next_node = htonl(t->next_node);
rmp->context = context;
@@ -1540,7 +1541,7 @@ next_tlv_md2:
always_inline void
nsh_md2_decap (vlib_buffer_t * b,
nsh_base_header_t * hdr,
- u32 header_len,
+ u32 *header_len,
u32 * next,
u32 drop_node_val)
{
@@ -1552,7 +1553,7 @@ nsh_md2_decap (vlib_buffer_t * b,
/* Populate the NSH Header */
opt0 = (nsh_md2_data_t *)(hdr + 1);
- limit0 = (nsh_md2_data_t *) ((u8 *) hdr + header_len);
+ limit0 = (nsh_md2_data_t *) ((u8 *) hdr + *header_len);
/* Scan the set of variable metadata, process ones that we understand */
while (opt0 < limit0)
@@ -1575,6 +1576,8 @@ nsh_md2_decap (vlib_buffer_t * b,
/* round to 4-byte */
option_len = ( (opt0->length+3)>>2 ) << 2;
opt0 = (nsh_md2_data_t *) (((u8 *) opt0) + sizeof (nsh_md2_data_t) + option_len);
+ *next = (nm->decap_v4_next_override) ? (nm->decap_v4_next_override) : (*next);
+ *header_len = (nm->decap_v4_next_override) ? 0 : (*header_len);
}
return;
@@ -1735,13 +1738,13 @@ nsh_input_map (vlib_main_t * vm,
/* Manipulate MD2 */
if(PREDICT_FALSE(hdr0->md_type == 2))
{
- vnet_buffer(b0)->sw_if_index[VLIB_RX] = map0->sw_if_index;
- nsh_md2_decap(b0, hdr0, header_len0, &next0, NSH_NODE_NEXT_DROP);
+ nsh_md2_decap(b0, hdr0, &header_len0, &next0, NSH_NODE_NEXT_DROP);
if (PREDICT_FALSE(next0 == NSH_NODE_NEXT_DROP))
{
error0 = NSH_NODE_ERROR_INVALID_OPTIONS;
goto trace0;
}
+ vnet_buffer(b0)->sw_if_index[VLIB_RX] = map0->rx_sw_if_index;
}
/* Pop NSH header */
@@ -1838,13 +1841,13 @@ nsh_input_map (vlib_main_t * vm,
/* Manipulate MD2 */
if(PREDICT_FALSE(hdr1->md_type == 2))
{
- vnet_buffer(b1)->sw_if_index[VLIB_RX] = map1->sw_if_index;
- nsh_md2_decap(b1, hdr1, header_len1, &next1, NSH_NODE_NEXT_DROP);
+ nsh_md2_decap(b1, hdr1, &header_len1, &next1, NSH_NODE_NEXT_DROP);
if (PREDICT_FALSE(next1 == NSH_NODE_NEXT_DROP))
{
error1 = NSH_NODE_ERROR_INVALID_OPTIONS;
goto trace1;
}
+ vnet_buffer(b1)->sw_if_index[VLIB_RX] = map0->rx_sw_if_index;
}
/* Pop NSH header */
@@ -2024,13 +2027,13 @@ nsh_input_map (vlib_main_t * vm,
/* Manipulate MD2 */
if(PREDICT_FALSE(hdr0->md_type == 2))
{
- vnet_buffer(b0)->sw_if_index[VLIB_RX] = map0->sw_if_index;
- nsh_md2_decap(b0, hdr0, header_len0, &next0, NSH_NODE_NEXT_DROP);
+ nsh_md2_decap(b0, hdr0, &header_len0, &next0, NSH_NODE_NEXT_DROP);
if (PREDICT_FALSE(next0 == NSH_NODE_NEXT_DROP))
{
error0 = NSH_NODE_ERROR_INVALID_OPTIONS;
goto trace00;
}
+ vnet_buffer(b0)->sw_if_index[VLIB_RX] = map0->rx_sw_if_index;
}
/* Pop NSH header */
@@ -2282,6 +2285,15 @@ VLIB_REGISTER_NODE (nsh_aware_vnf_proxy_node) = {
VLIB_NODE_FUNCTION_MULTIARCH (nsh_aware_vnf_proxy_node, nsh_aware_vnf_proxy);
+void
+nsh_md2_set_next_ioam_export_override (uword next)
+{
+ nsh_main_t *hm = &nsh_main;
+ hm->decap_v4_next_override = next;
+ return;
+}
+
+
clib_error_t *nsh_init (vlib_main_t *vm)
{
nsh_main_t *nm = &nsh_main;
diff --git a/nsh-plugin/nsh/nsh.h b/nsh-plugin/nsh/nsh.h
index 501f756..b03c8e7 100644
--- a/nsh-plugin/nsh/nsh.h
+++ b/nsh-plugin/nsh/nsh.h
@@ -74,6 +74,7 @@ typedef struct {
/* encap if index */
u32 sw_if_index;
+ u32 rx_sw_if_index;
u32 next_node;
} nsh_map_t;
@@ -145,6 +146,7 @@ typedef struct {
int (*pop_options[MAX_MD2_OPTIONS]) (vlib_buffer_t * b,
nsh_tlv_header_t * opt);
u8 *(*trace[MAX_MD2_OPTIONS]) (u8 * s, nsh_tlv_header_t * opt);
+ uword decap_v4_next_override;
/* convenience */
vlib_main_t * vlib_main;
@@ -154,6 +156,9 @@ typedef struct {
nsh_main_t nsh_main;
extern vlib_node_registration_t nsh_aware_vnf_proxy_node;
+typedef struct {
+ u8 trace_data[256];
+} nsh_input_trace_t;
u8 * format_nsh_input_map_trace (u8 * s, va_list * args);
u8 * format_nsh_header_with_length (u8 * s, va_list * args);
diff --git a/nsh-plugin/nsh/nsh_pop.c b/nsh-plugin/nsh/nsh_pop.c
new file mode 100644
index 0000000..ed3d84a
--- /dev/null
+++ b/nsh-plugin/nsh/nsh_pop.c
@@ -0,0 +1,366 @@
+/*
+ * nsh_pop.c - nsh POP only processing
+ *
+ * Copyright (c) 2017 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/vnet.h>
+#include <vnet/plugin/plugin.h>
+#include <nsh/nsh.h>
+#include <vnet/gre/gre.h>
+#include <vnet/vxlan/vxlan.h>
+#include <vnet/vxlan-gpe/vxlan_gpe.h>
+#include <vnet/l2/l2_classify.h>
+
+#include <vlibapi/api.h>
+#include <vlibmemory/api.h>
+#include <vlibsocket/api.h>
+
+extern nsh_option_map_t * nsh_md2_lookup_option (u16 class, u8 type);
+
+extern u8 * format_nsh_header (u8 * s, va_list * args);
+extern u8 * format_nsh_node_map_trace (u8 * s, va_list * args);
+
+/* format from network order */
+u8 * format_nsh_pop_header (u8 * s, va_list * args)
+{
+ return format_nsh_header(s, args);
+}
+
+
+
+u8 * format_nsh_pop_node_map_trace (u8 * s, va_list * args)
+{
+ return format_nsh_node_map_trace(s, args);
+}
+
+
+static uword
+nsh_pop_inline (vlib_main_t * vm,
+ vlib_node_runtime_t * node,
+ vlib_frame_t * from_frame)
+{
+ u32 n_left_from, next_index, *from, *to_next;
+ nsh_main_t * nm = &nsh_main;
+
+ 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 >= 4 && n_left_to_next >= 2)
+ {
+ u32 bi0, bi1;
+ vlib_buffer_t * b0, *b1;
+ u32 next0 = NSH_NODE_NEXT_DROP, next1 = NSH_NODE_NEXT_DROP;
+ uword * entry0, *entry1;
+ nsh_base_header_t * hdr0 = 0, *hdr1 = 0;
+ u32 header_len0 = 0, header_len1 = 0;
+ u32 nsp_nsi0, nsp_nsi1;
+ u32 error0, error1;
+ nsh_map_t * map0 = 0, *map1 = 0;
+
+ /* Prefetch next iteration. */
+ {
+ vlib_buffer_t * p2, *p3;
+
+ p2 = vlib_get_buffer(vm, from[2]);
+ p3 = vlib_get_buffer(vm, from[3]);
+
+ vlib_prefetch_buffer_header(p2, LOAD);
+ vlib_prefetch_buffer_header(p3, LOAD);
+
+ CLIB_PREFETCH(p2->data, 2*CLIB_CACHE_LINE_BYTES, LOAD);
+ CLIB_PREFETCH(p3->data, 2*CLIB_CACHE_LINE_BYTES, LOAD);
+ }
+
+ bi0 = from[0];
+ bi1 = from[1];
+ to_next[0] = bi0;
+ to_next[1] = bi1;
+ from += 2;
+ to_next += 2;
+ n_left_from -= 2;
+ n_left_to_next -= 2;
+
+ error0 = 0;
+ error1 = 0;
+
+ b0 = vlib_get_buffer(vm, bi0);
+ b1 = vlib_get_buffer(vm, bi1);
+ hdr0 = vlib_buffer_get_current(b0);
+ nsp_nsi0 = hdr0->nsp_nsi;
+ header_len0 = hdr0->length * 4;
+
+ hdr1 = vlib_buffer_get_current(b1);
+ nsp_nsi1 = hdr1->nsp_nsi;
+ header_len1 = hdr1->length * 4;
+
+ /* Process packet 0 */
+ entry0 = hash_get_mem(nm->nsh_mapping_by_key, &nsp_nsi0);
+ if (PREDICT_FALSE(entry0 == 0))
+ {
+ error0 = NSH_NODE_ERROR_NO_MAPPING;
+ goto trace0;
+ }
+
+ /* Entry should point to a mapping ...*/
+ map0 = pool_elt_at_index(nm->nsh_mappings, entry0[0]);
+ if (PREDICT_FALSE(map0 == 0))
+ {
+ error0 = NSH_NODE_ERROR_NO_MAPPING;
+ goto trace0;
+ }
+
+ /* set up things for next node to transmit ie which node to handle it and where */
+ next0 = map0->next_node;
+ //vnet_buffer(b0)->sw_if_index[VLIB_TX] = map0->sw_if_index;
+
+ if(PREDICT_FALSE(map0->nsh_action == NSH_ACTION_POP))
+ {
+ /* Manipulate MD2 */
+ if(PREDICT_FALSE(hdr0->md_type == 2))
+ {
+ if (PREDICT_FALSE(next0 == NSH_NODE_NEXT_DROP))
+ {
+ error0 = NSH_NODE_ERROR_INVALID_OPTIONS;
+ goto trace0;
+ }
+ //vnet_buffer(b0)->sw_if_index[VLIB_RX] = map0->sw_if_index;
+ }
+
+ /* Pop NSH header */
+ vlib_buffer_advance(b0, (word)header_len0);
+ goto trace0;
+ }
+
+ entry0 = hash_get_mem(nm->nsh_entry_by_key, &map0->mapped_nsp_nsi);
+ if (PREDICT_FALSE(entry0 == 0))
+ {
+ error0 = NSH_NODE_ERROR_NO_ENTRY;
+ goto trace0;
+ }
+
+ trace0: b0->error = error0 ? node->errors[error0] : 0;
+
+ if (PREDICT_FALSE(b0->flags & VLIB_BUFFER_IS_TRACED))
+ {
+ nsh_input_trace_t *tr = vlib_add_trace(vm, node, b0, sizeof(*tr));
+ clib_memcpy ( &(tr->trace_data), hdr0, (hdr0->length*4) );
+ }
+
+ /* Process packet 1 */
+ entry1 = hash_get_mem(nm->nsh_mapping_by_key, &nsp_nsi1);
+ if (PREDICT_FALSE(entry1 == 0))
+ {
+ error1 = NSH_NODE_ERROR_NO_MAPPING;
+ goto trace1;
+ }
+
+ /* Entry should point to a mapping ...*/
+ map1 = pool_elt_at_index(nm->nsh_mappings, entry1[0]);
+ if (PREDICT_FALSE(map1 == 0))
+ {
+ error1 = NSH_NODE_ERROR_NO_MAPPING;
+ goto trace1;
+ }
+
+ /* set up things for next node to transmit ie which node to handle it and where */
+ next1 = map1->next_node;
+ //vnet_buffer(b1)->sw_if_index[VLIB_TX] = map1->sw_if_index;
+
+ if(PREDICT_FALSE(map1->nsh_action == NSH_ACTION_POP))
+ {
+ /* Manipulate MD2 */
+ if(PREDICT_FALSE(hdr1->md_type == 2))
+ {
+ if (PREDICT_FALSE(next1 == NSH_NODE_NEXT_DROP))
+ {
+ error1 = NSH_NODE_ERROR_INVALID_OPTIONS;
+ goto trace1;
+ }
+ //vnet_buffer(b1)->sw_if_index[VLIB_RX] = map1->sw_if_index;
+ }
+
+ /* Pop NSH header */
+ vlib_buffer_advance(b1, (word)header_len1);
+ goto trace1;
+ }
+
+ entry1 = hash_get_mem(nm->nsh_entry_by_key, &map1->mapped_nsp_nsi);
+ if (PREDICT_FALSE(entry1 == 0))
+ {
+ error1 = NSH_NODE_ERROR_NO_ENTRY;
+ goto trace1;
+ }
+
+
+ trace1: b1->error = error1 ? node->errors[error1] : 0;
+
+ if (PREDICT_FALSE(b1->flags & VLIB_BUFFER_IS_TRACED))
+ {
+ nsh_input_trace_t *tr = vlib_add_trace(vm, node, b1, sizeof(*tr));
+ clib_memcpy ( &(tr->trace_data), hdr1, (hdr1->length*4) );
+ }
+
+ vlib_validate_buffer_enqueue_x2(vm, node, next_index, to_next,
+ n_left_to_next, bi0, bi1, next0, next1);
+
+ }
+
+ while (n_left_from > 0 && n_left_to_next > 0)
+ {
+ u32 bi0 = 0;
+ vlib_buffer_t * b0 = NULL;
+ u32 next0 = NSH_NODE_NEXT_DROP;
+ uword * entry0;
+ nsh_base_header_t * hdr0 = 0;
+ u32 header_len0 = 0;
+ u32 nsp_nsi0;
+ u32 error0;
+ nsh_map_t * map0 = 0;
+
+ bi0 = from[0];
+ to_next[0] = bi0;
+ from += 1;
+ to_next += 1;
+ n_left_from -= 1;
+ n_left_to_next -= 1;
+ error0 = 0;
+
+ b0 = vlib_get_buffer(vm, bi0);
+ hdr0 = vlib_buffer_get_current(b0);
+
+ nsp_nsi0 = hdr0->nsp_nsi;
+ header_len0 = hdr0->length * 4;
+
+ entry0 = hash_get_mem(nm->nsh_mapping_by_key, &nsp_nsi0);
+
+ if (PREDICT_FALSE(entry0 == 0))
+ {
+ error0 = NSH_NODE_ERROR_NO_MAPPING;
+ goto trace00;
+ }
+
+ /* Entry should point to a mapping ...*/
+ map0 = pool_elt_at_index(nm->nsh_mappings, entry0[0]);
+
+ if (PREDICT_FALSE(map0 == 0))
+ {
+ error0 = NSH_NODE_ERROR_NO_MAPPING;
+ goto trace00;
+ }
+
+ /* set up things for next node to transmit ie which node to handle it and where */
+ next0 = map0->next_node;
+ //vnet_buffer(b0)->sw_if_index[VLIB_TX] = map0->sw_if_index;
+
+ if(PREDICT_FALSE(map0->nsh_action == NSH_ACTION_POP))
+ {
+ /* Manipulate MD2 */
+ if(PREDICT_FALSE(hdr0->md_type == 2))
+ {
+ if (PREDICT_FALSE(next0 == NSH_NODE_NEXT_DROP))
+ {
+ error0 = NSH_NODE_ERROR_INVALID_OPTIONS;
+ goto trace00;
+ }
+ //vnet_buffer(b0)->sw_if_index[VLIB_RX] = map0->sw_if_index;
+ }
+
+ /* Pop NSH header */
+ vlib_buffer_advance(b0, (word)header_len0);
+ goto trace00;
+ }
+
+ entry0 = hash_get_mem(nm->nsh_entry_by_key, &map0->mapped_nsp_nsi);
+ if (PREDICT_FALSE(entry0 == 0))
+ {
+ error0 = NSH_NODE_ERROR_NO_ENTRY;
+ goto trace00;
+ }
+
+ trace00: b0->error = error0 ? node->errors[error0] : 0;
+
+ if (PREDICT_FALSE(b0->flags & VLIB_BUFFER_IS_TRACED))
+ {
+ nsh_input_trace_t *tr = vlib_add_trace(vm, node, b0, sizeof(*tr));
+ clib_memcpy ( &(tr->trace_data[0]), hdr0, (hdr0->length*4) );
+ }
+
+ 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;
+}
+
+/**
+ * @brief Graph processing dispatch function for NSH Input
+ *
+ * @node nsh_input
+ * @param *vm
+ * @param *node
+ * @param *from_frame
+ *
+ * @return from_frame->n_vectors
+ *
+ */
+static uword
+nsh_pop (vlib_main_t * vm, vlib_node_runtime_t * node,
+ vlib_frame_t * from_frame)
+{
+ return nsh_pop_inline (vm, node, from_frame);
+}
+
+static char * nsh_pop_node_error_strings[] = {
+#define _(sym,string) string,
+ foreach_nsh_node_error
+#undef _
+};
+
+/* register nsh-input node */
+VLIB_REGISTER_NODE (nsh_pop_node) = {
+ .function = nsh_pop,
+ .name = "nsh-pop",
+ .vector_size = sizeof (u32),
+ .format_trace = format_nsh_pop_node_map_trace,
+ .format_buffer = format_nsh_pop_header,
+ .type = VLIB_NODE_TYPE_INTERNAL,
+
+ .n_errors = ARRAY_LEN(nsh_pop_node_error_strings),
+ .error_strings = nsh_pop_node_error_strings,
+
+ .n_next_nodes = NSH_NODE_N_NEXT,
+
+ .next_nodes = {
+#define _(s,n) [NSH_NODE_NEXT_##s] = n,
+ foreach_nsh_node_next
+#undef _
+ },
+};
+
+VLIB_NODE_FUNCTION_MULTIARCH (nsh_pop_node, nsh_pop);
+
+