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authorNeale Ranns <nranns@cisco.com>2017-08-12 02:12:00 -0700
committerNeale Ranns <nranns@cisco.com>2017-08-21 04:07:00 -0700
commit43161a873375ddf156cf6fbe8764bfc206b38fa0 (patch)
tree939e5455aaff68341d387b559f743dc049b03377 /src/plugins
parent352829f538783afe8609f09850f45536a4779b70 (diff)
PPPoE usses a midchain adjacency stack on an interface-tx DPO
1) introduce an interface-tx DPO. This is a simple wrapper around a sw_if_index. enhance DPO stacking functions to allow per-instance next-nodes and hence allow children to stack onto the interface per-instance tx node and not on 'interface-output'. 2) update PPPoE code to use ta midchain stack on a interface-tx DPO of the encap-interface. This remove the need for pppoe_encap node (which is replaced by the adj-midchain-tx) and interface-output node is no longer used (see above). Since PPPoE encap node is no longer needed, the PPPoE seesion does not need to be retrieved in the data-path, hence the cahce misses are removed. Change-Id: Id8b40f53daa14889a9c51d802e14fed7fba4399a Signed-off-by: Neale Ranns <nranns@cisco.com>
Diffstat (limited to 'src/plugins')
-rw-r--r--src/plugins/pppoe.am23
-rw-r--r--src/plugins/pppoe/pppoe.c144
-rw-r--r--src/plugins/pppoe/pppoe.h6
-rw-r--r--src/plugins/pppoe/pppoe_encap.c384
4 files changed, 122 insertions, 435 deletions
diff --git a/src/plugins/pppoe.am b/src/plugins/pppoe.am
index 28bd20a0425..06ed60b4978 100644
--- a/src/plugins/pppoe.am
+++ b/src/plugins/pppoe.am
@@ -14,27 +14,26 @@
vppapitestplugins_LTLIBRARIES += pppoe_test_plugin.la
vppplugins_LTLIBRARIES += pppoe_plugin.la
-pppoe_plugin_la_SOURCES = \
- pppoe/pppoe_decap.c \
- pppoe/pppoe_encap.c \
- pppoe/pppoe_tap.c \
- pppoe/pppoe_tap_node.c \
- pppoe/pppoe.c \
+pppoe_plugin_la_SOURCES = \
+ pppoe/pppoe_decap.c \
+ pppoe/pppoe_tap.c \
+ pppoe/pppoe_tap_node.c \
+ pppoe/pppoe.c \
pppoe/pppoe_api.c
-BUILT_SOURCES += \
- pppoe/pppoe.api.h \
+BUILT_SOURCES += \
+ pppoe/pppoe.api.h \
pppoe/pppoe.api.json
API_FILES += pppoe/pppoe.api
nobase_apiinclude_HEADERS += \
- pppoe/pppoe_all_api_h.h \
- pppoe/pppoe_msg_enum.h \
+ pppoe/pppoe_all_api_h.h \
+ pppoe/pppoe_msg_enum.h \
pppoe/pppoe.api.h
-pppoe_test_plugin_la_SOURCES = \
- pppoe/pppoe_test.c \
+pppoe_test_plugin_la_SOURCES = \
+ pppoe/pppoe_test.c \
pppoe/pppoe_plugin.api.h
# vi:syntax=automake
diff --git a/src/plugins/pppoe/pppoe.c b/src/plugins/pppoe/pppoe.c
index cb587e2934b..e09ac7d993e 100644
--- a/src/plugins/pppoe/pppoe.c
+++ b/src/plugins/pppoe/pppoe.c
@@ -24,11 +24,13 @@
#include <vnet/ethernet/ethernet.h>
#include <vnet/fib/fib_entry.h>
#include <vnet/fib/fib_table.h>
-#include <vnet/dpo/dpo.h>
+#include <vnet/dpo/interface_tx_dpo.h>
#include <vnet/plugin/plugin.h>
#include <vpp/app/version.h>
#include <vnet/ppp/packet.h>
#include <pppoe/pppoe.h>
+#include <vnet/adj/adj_midchain.h>
+#include <vnet/adj/adj_mcast.h>
#include <vppinfra/hash.h>
#include <vppinfra/bihash_template.c>
@@ -85,7 +87,6 @@ pppoe_interface_admin_up_down (vnet_main_t * vnm, u32 hw_if_index, u32 flags)
VNET_DEVICE_CLASS (pppoe_device_class,static) = {
.name = "PPPPOE",
.format_device_name = format_pppoe_name,
- .format_tx_trace = format_pppoe_encap_trace,
.tx_function = dummy_interface_tx,
.admin_up_down_function = pppoe_interface_admin_up_down,
};
@@ -99,27 +100,19 @@ format_pppoe_header_with_length (u8 * s, va_list * args)
return s;
}
-/* *INDENT-OFF* */
-VNET_HW_INTERFACE_CLASS (pppoe_hw_class) =
-{
- .name = "PPPPOE",
- .format_header = format_pppoe_header_with_length,
- .build_rewrite = default_build_rewrite,
- .flags = VNET_HW_INTERFACE_CLASS_FLAG_P2P,
-};
-/* *INDENT-ON* */
-
-#define foreach_copy_field \
-_(session_id) \
-_(encap_if_index) \
-_(decap_fib_index) \
-_(client_ip)
-
-static void
-eth_pppoe_rewrite (pppoe_session_t * t, bool is_ip6)
+static u8 *
+pppoe_build_rewrite (vnet_main_t * vnm,
+ u32 sw_if_index,
+ vnet_link_t link_type, const void *dst_address)
{
- u8 *rw = 0;
int len = sizeof (pppoe_header_t) + sizeof (ethernet_header_t);
+ pppoe_main_t *pem = &pppoe_main;
+ pppoe_session_t *t;
+ u32 session_id;
+ u8 *rw = 0;
+
+ session_id = pem->session_index_by_sw_if_index[sw_if_index];
+ t = pool_elt_at_index (pem->sessions, session_id);
vec_validate_aligned (rw, len - 1, CLIB_CACHE_LINE_BYTES);
@@ -134,21 +127,112 @@ eth_pppoe_rewrite (pppoe_session_t * t, bool is_ip6)
pppoe->session_id = clib_host_to_net_u16 (t->session_id);
pppoe->length = 0; /* To be filled in at run-time */
- if (!is_ip6)
+ switch (link_type)
{
+ case VNET_LINK_IP4:
pppoe->ppp_proto = clib_host_to_net_u16 (PPP_PROTOCOL_ip4);
+ break;
+ case VNET_LINK_IP6:
+ pppoe->ppp_proto = clib_host_to_net_u16 (PPP_PROTOCOL_ip6);
+ break;
+ default:
+ break;
}
- else
+
+ return rw;
+}
+
+/**
+ * @brief Fixup the adj rewrite post encap. Insert the packet's length
+ */
+static void
+pppoe_fixup (vlib_main_t * vm, ip_adjacency_t * adj, vlib_buffer_t * b0)
+{
+ pppoe_header_t *pppoe0;
+
+ pppoe0 = vlib_buffer_get_current (b0);
+
+ pppoe0->length = clib_host_to_net_u16 (vlib_buffer_length_in_chain (vm, b0)
+ - sizeof (pppoe_header_t)
+ - sizeof (ethernet_header_t));
+}
+
+static void
+pppoe_update_adj (vnet_main_t * vnm, u32 sw_if_index, adj_index_t ai)
+{
+ pppoe_main_t *pem = &pppoe_main;
+ dpo_id_t dpo = DPO_INVALID;
+ ip_adjacency_t *adj;
+ pppoe_session_t *t;
+ u32 session_id;
+
+ ASSERT (ADJ_INDEX_INVALID != ai);
+
+ adj = adj_get (ai);
+
+ switch (adj->lookup_next_index)
{
- pppoe->ppp_proto = clib_host_to_net_u16 (PPP_PROTOCOL_ip6);
+ case IP_LOOKUP_NEXT_ARP:
+ case IP_LOOKUP_NEXT_GLEAN:
+ adj_nbr_midchain_update_rewrite (ai, pppoe_fixup,
+ ADJ_FLAG_NONE,
+ pppoe_build_rewrite (vnm,
+ sw_if_index,
+ adj->ia_link,
+ NULL));
+ break;
+ case IP_LOOKUP_NEXT_MCAST:
+ /*
+ * Construct a partial rewrite from the known ethernet mcast dest MAC
+ * There's no MAC fixup, so the last 2 parameters are 0
+ */
+ adj_mcast_midchain_update_rewrite (ai, pppoe_fixup,
+ ADJ_FLAG_NONE,
+ pppoe_build_rewrite (vnm,
+ sw_if_index,
+ adj->ia_link,
+ NULL), 0, 0);
+ break;
+
+ case IP_LOOKUP_NEXT_DROP:
+ case IP_LOOKUP_NEXT_PUNT:
+ case IP_LOOKUP_NEXT_LOCAL:
+ case IP_LOOKUP_NEXT_REWRITE:
+ case IP_LOOKUP_NEXT_MIDCHAIN:
+ case IP_LOOKUP_NEXT_MCAST_MIDCHAIN:
+ case IP_LOOKUP_NEXT_ICMP_ERROR:
+ case IP_LOOKUP_N_NEXT:
+ ASSERT (0);
+ break;
}
- t->rewrite = rw;
- _vec_len (t->rewrite) = len;
+ session_id = pem->session_index_by_sw_if_index[sw_if_index];
+ t = pool_elt_at_index (pem->sessions, session_id);
+ interface_tx_dpo_add_or_lock (vnet_link_to_dpo_proto (adj->ia_link),
+ t->encap_if_index, &dpo);
+
+ adj_nbr_midchain_stack (ai, &dpo);
- return;
+ dpo_reset (&dpo);
}
+/* *INDENT-OFF* */
+VNET_HW_INTERFACE_CLASS (pppoe_hw_class) =
+{
+ .name = "PPPPOE",
+ .format_header = format_pppoe_header_with_length,
+ .build_rewrite = pppoe_build_rewrite,
+ .update_adjacency = pppoe_update_adj,
+ .flags = VNET_HW_INTERFACE_CLASS_FLAG_P2P,
+};
+/* *INDENT-ON* */
+
+#define foreach_copy_field \
+_(session_id) \
+_(encap_if_index) \
+_(decap_fib_index) \
+_(client_ip)
+
static bool
pppoe_decap_next_is_valid (pppoe_main_t * pem, u32 is_ip6,
u32 decap_fib_index)
@@ -231,8 +315,6 @@ int vnet_pppoe_add_del_session
clib_memcpy (t->client_mac, a->client_mac, 6);
- eth_pppoe_rewrite (t, is_ip6);
-
/* update pppoe fib with session_index */
result.fields.session_index = t - pem->sessions;
pppoe_update_1 (&pem->session_table,
@@ -285,9 +367,6 @@ int vnet_pppoe_add_del_session
vnet_sw_interface_set_flags (vnm, sw_if_index,
VNET_SW_INTERFACE_FLAG_ADMIN_UP);
- /* Set pppoe session output node */
- hi->output_node_index = pppoe_encap_node.index;
-
/* add reverse route for client ip */
fib_table_entry_path_add (a->decap_fib_index, &pfx,
FIB_SOURCE_PLUGIN_HI, FIB_ENTRY_FLAG_NONE,
@@ -328,7 +407,6 @@ int vnet_pppoe_add_del_session
sw_if_index, ~0, 1,
FIB_ROUTE_PATH_FLAG_NONE);
- vec_free (t->rewrite);
pool_put (pem->sessions, t);
}
diff --git a/src/plugins/pppoe/pppoe.h b/src/plugins/pppoe/pppoe.h
index 37d628eb903..b06c068f405 100644
--- a/src/plugins/pppoe/pppoe.h
+++ b/src/plugins/pppoe/pppoe.h
@@ -48,9 +48,6 @@ typedef struct
typedef struct
{
- /* Rewrite string */
- u8 *rewrite;
-
/* pppoe session_id in HOST byte order */
u16 session_id;
@@ -177,11 +174,8 @@ typedef struct
extern pppoe_main_t pppoe_main;
extern vlib_node_registration_t pppoe_input_node;
-extern vlib_node_registration_t pppoe_encap_node;
extern vlib_node_registration_t pppoe_tap_dispatch_node;
-u8 *format_pppoe_encap_trace (u8 * s, va_list * args);
-
typedef struct
{
u8 is_add;
diff --git a/src/plugins/pppoe/pppoe_encap.c b/src/plugins/pppoe/pppoe_encap.c
deleted file mode 100644
index 69bec61dec1..00000000000
--- a/src/plugins/pppoe/pppoe_encap.c
+++ /dev/null
@@ -1,384 +0,0 @@
-/*
- * Copyright (c) 2017 Intel 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 <vppinfra/error.h>
-#include <vppinfra/hash.h>
-#include <vnet/vnet.h>
-#include <vnet/ip/ip.h>
-#include <vnet/ethernet/ethernet.h>
-#include <pppoe/pppoe.h>
-
-/* Statistics (not all errors) */
-#define foreach_pppoe_encap_error \
-_(ENCAPSULATED, "good packets encapsulated")
-
-static char * pppoe_encap_error_strings[] = {
-#define _(sym,string) string,
- foreach_pppoe_encap_error
-#undef _
-};
-
-typedef enum {
-#define _(sym,str) PPPOE_ENCAP_ERROR_##sym,
- foreach_pppoe_encap_error
-#undef _
- PPPOE_ENCAP_N_ERROR,
-} pppoe_encap_error_t;
-
-#define foreach_pppoe_encap_next \
-_(DROP, "error-drop") \
-_(INTERFACE, "interface-output" ) \
-
-typedef enum
-{
-#define _(s,n) PPPOE_ENCAP_NEXT_##s,
- foreach_pppoe_encap_next
-#undef _
- PPPOE_ENCAP_N_NEXT,
-} pppoe_encap_next_t;
-
-typedef struct {
- u32 session_index;
- u32 session_id;
-} pppoe_encap_trace_t;
-
-u8 * format_pppoe_encap_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 *);
- pppoe_encap_trace_t * t
- = va_arg (*args, pppoe_encap_trace_t *);
-
- s = format (s, "PPPOE encap to pppoe_session%d session_id %d",
- t->session_index, t->session_id);
- return s;
-}
-
-
-#define foreach_fixed_header2_offset \
- _(0) _(1)
-
-
-static uword
-pppoe_encap (vlib_main_t * vm,
- vlib_node_runtime_t * node,
- vlib_frame_t * from_frame)
-{
- u32 n_left_from, next_index, * from, * to_next;
- pppoe_main_t * pem = &pppoe_main;
- vnet_main_t * vnm = pem->vnet_main;
- vnet_interface_main_t * im = &vnm->interface_main;
- u32 pkts_encapsulated = 0;
- u32 thread_index = vlib_get_thread_index();
- u32 stats_sw_if_index, stats_n_packets, stats_n_bytes;
- u32 sw_if_index0 = 0, sw_if_index1 = 0;
- u32 next0 = 0, next1 = 0;
- pppoe_session_t * t0 = NULL, * t1 = NULL;
-
- from = vlib_frame_vector_args (from_frame);
- n_left_from = from_frame->n_vectors;
-
- next_index = node->cached_next_index;
- stats_sw_if_index = node->runtime_data[0];
- stats_n_packets = stats_n_bytes = 0;
-
- 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 len0, len1;
- ethernet_header_t * eth0, * eth1;
- pppoe_header_t * pppoe0, * pppoe1;
- u64 * copy_src0, * copy_dst0;
- u64 * copy_src1, * copy_dst1;
- u16 * copy_src_last0, * copy_dst_last0;
- u16 * copy_src_last1, * copy_dst_last1;
- u16 new_l0, new_l1;
- u32 session_id0, session_id1;
-
- /* 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_to_next -= 2;
- n_left_from -= 2;
-
- b0 = vlib_get_buffer (vm, bi0);
- b1 = vlib_get_buffer (vm, bi1);
-
- /* Get next node index and if-index from session */
- sw_if_index0 = vnet_buffer(b0)->sw_if_index[VLIB_TX];
- session_id0 = pem->session_index_by_sw_if_index[sw_if_index0];
- t0 = pool_elt_at_index(pem->sessions, session_id0);
- next0 = PPPOE_ENCAP_NEXT_INTERFACE;
- vnet_buffer(b0)->sw_if_index[VLIB_TX] = t0->encap_if_index;
-
- /* Get next node index and if-index from session */
- sw_if_index1 = vnet_buffer(b1)->sw_if_index[VLIB_TX];
- session_id1 = pem->session_index_by_sw_if_index[sw_if_index1];
- t1 = pool_elt_at_index(pem->sessions, session_id1);
- next1 = PPPOE_ENCAP_NEXT_INTERFACE;
- vnet_buffer(b1)->sw_if_index[VLIB_TX] = t1->encap_if_index;
-
- /* Apply the rewrite string. $$$$ vnet_rewrite? */
- vlib_buffer_advance (b0, -(word)_vec_len(t0->rewrite));
- vlib_buffer_advance (b1, -(word)_vec_len(t1->rewrite));
-
- eth0 = (ethernet_header_t *)(vlib_buffer_get_current(b0));
- eth1 = (ethernet_header_t *)(vlib_buffer_get_current(b1));
-
- /* Copy the fixed header */
- copy_dst0 = (u64 *) eth0;
- copy_src0 = (u64 *) t0->rewrite;
- copy_dst1 = (u64 *) eth1;
- copy_src1 = (u64 *) t1->rewrite;
- /* Copy first 8-bytes at a time */
-#define _(offs) copy_dst0[offs] = copy_src0[offs];
- foreach_fixed_header2_offset;
-#undef _
- /* Last 6 octets. Hopefully gcc will be our friend */
- copy_dst_last0 = (u16 *)(&copy_dst0[2]);
- copy_src_last0 = (u16 *)(&copy_src0[2]);
- copy_dst_last0[0] = copy_src_last0[0];
- copy_dst_last0[1] = copy_src_last0[1];
- copy_dst_last0[2] = copy_src_last0[2];
-
-#define _(offs) copy_dst1[offs] = copy_src1[offs];
- foreach_fixed_header2_offset;
-#undef _
- /* Last 6 octets. Hopefully gcc will be our friend */
- copy_dst_last1 = (u16 *)(&copy_dst1[2]);
- copy_src_last1 = (u16 *)(&copy_src1[2]);
- copy_dst_last1[0] = copy_src_last1[0];
- copy_dst_last1[1] = copy_src_last1[1];
- copy_dst_last1[2] = copy_src_last1[2];
-
- /* Fix PPPoE length */
- new_l0 = clib_host_to_net_u16 (vlib_buffer_length_in_chain(vm, b0)
- - sizeof (*pppoe0) - sizeof(*eth0));
- pppoe0 = (pppoe_header_t *)(eth0 + 1);
- pppoe0->length = new_l0;
-
- new_l1 = clib_host_to_net_u16 (vlib_buffer_length_in_chain(vm, b1)
- - sizeof (*pppoe1) - sizeof(*eth1));
- pppoe1 = (pppoe_header_t *)(eth1 + 1);
- pppoe1->length = new_l1;
-
- pkts_encapsulated += 2;
- len0 = vlib_buffer_length_in_chain (vm, b0);
- len1 = vlib_buffer_length_in_chain (vm, b1);
- stats_n_packets += 2;
- stats_n_bytes += len0 + len1;
-
- /* Batch stats increment on the same pppoe session so counter is not
- incremented per packet. Note stats are still incremented for deleted
- and admin-down session where packets are dropped. It is not worthwhile
- to check for this rare case and affect normal path performance. */
- if (PREDICT_FALSE ((sw_if_index0 != stats_sw_if_index) ||
- (sw_if_index1 != stats_sw_if_index)))
- {
- stats_n_packets -= 2;
- stats_n_bytes -= len0 + len1;
- if (sw_if_index0 == sw_if_index1)
- {
- if (stats_n_packets)
- vlib_increment_combined_counter
- (im->combined_sw_if_counters + VNET_INTERFACE_COUNTER_TX,
- thread_index, stats_sw_if_index,
- stats_n_packets, stats_n_bytes);
- stats_sw_if_index = sw_if_index0;
- stats_n_packets = 2;
- stats_n_bytes = len0 + len1;
- }
- else
- {
- vlib_increment_combined_counter
- (im->combined_sw_if_counters + VNET_INTERFACE_COUNTER_TX,
- thread_index, sw_if_index0, 1, len0);
- vlib_increment_combined_counter
- (im->combined_sw_if_counters + VNET_INTERFACE_COUNTER_TX,
- thread_index, sw_if_index1, 1, len1);
- }
- }
-
- if (PREDICT_FALSE(b0->flags & VLIB_BUFFER_IS_TRACED))
- {
- pppoe_encap_trace_t *tr =
- vlib_add_trace (vm, node, b0, sizeof (*tr));
- tr->session_index = t0 - pem->sessions;
- tr->session_id = t0->session_id;
- }
-
- if (PREDICT_FALSE(b1->flags & VLIB_BUFFER_IS_TRACED))
- {
- pppoe_encap_trace_t *tr =
- vlib_add_trace (vm, node, b1, sizeof (*tr));
- tr->session_index = t1 - pem->sessions;
- tr->session_id = t1->session_id;
- }
-
- 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;
- vlib_buffer_t * b0;
- ethernet_header_t * eth0;
- pppoe_header_t * pppoe0;
- u64 * copy_src0, * copy_dst0;
- u16 * copy_src_last0, * copy_dst_last0;
- u16 new_l0;
- u32 len0;
- u32 session_id0;
-
- 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);
-
- /* Get next node index and if-index from session */
- sw_if_index0 = vnet_buffer(b0)->sw_if_index[VLIB_TX];
- session_id0 = pem->session_index_by_sw_if_index[sw_if_index0];
- t0 = pool_elt_at_index(pem->sessions, session_id0);
- next0 = PPPOE_ENCAP_NEXT_INTERFACE;
- vnet_buffer(b0)->sw_if_index[VLIB_TX] = t0->encap_if_index;
-
- /* Apply the rewrite string. $$$$ vnet_rewrite? */
- vlib_buffer_advance (b0, -(word)_vec_len(t0->rewrite));
-
- eth0 = (ethernet_header_t *)(vlib_buffer_get_current(b0));
- /* Copy the fixed header */
- copy_dst0 = (u64 *) eth0;
- copy_src0 = (u64 *) t0->rewrite;
-
- /* Copy first 8-bytes at a time */
-#define _(offs) copy_dst0[offs] = copy_src0[offs];
- foreach_fixed_header2_offset;
-#undef _
- /* Last 6 octets. Hopefully gcc will be our friend */
- copy_dst_last0 = (u16 *)(&copy_dst0[2]);
- copy_src_last0 = (u16 *)(&copy_src0[2]);
- copy_dst_last0[0] = copy_src_last0[0];
- copy_dst_last0[1] = copy_src_last0[1];
- copy_dst_last0[2] = copy_src_last0[2];
-
- /* Fix PPPoE length */
- new_l0 = clib_host_to_net_u16 (vlib_buffer_length_in_chain(vm, b0)
- - sizeof (*pppoe0) - sizeof(*eth0));
- pppoe0 = (pppoe_header_t *)(eth0 + 1);
- pppoe0->length = new_l0;
-
- pkts_encapsulated ++;
- len0 = vlib_buffer_length_in_chain (vm, b0);
- stats_n_packets += 1;
- stats_n_bytes += len0;
-
- /* Batch stats increment on the same pppoe session so counter is not
- incremented per packet. Note stats are still incremented for deleted
- and admin-down session where packets are dropped. It is not worthwhile
- to check for this rare case and affect normal path performance. */
- if (PREDICT_FALSE (sw_if_index0 != stats_sw_if_index))
- {
- stats_n_packets -= 1;
- stats_n_bytes -= len0;
- if (stats_n_packets)
- vlib_increment_combined_counter
- (im->combined_sw_if_counters + VNET_INTERFACE_COUNTER_TX,
- thread_index, stats_sw_if_index,
- stats_n_packets, stats_n_bytes);
- stats_n_packets = 1;
- stats_n_bytes = len0;
- stats_sw_if_index = sw_if_index0;
- }
-
- if (PREDICT_FALSE(b0->flags & VLIB_BUFFER_IS_TRACED))
- {
- pppoe_encap_trace_t *tr =
- vlib_add_trace (vm, node, b0, sizeof (*tr));
- tr->session_index = t0 - pem->sessions;
- tr->session_id = t0->session_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);
- }
-
- /* Do we still need this now that session tx stats is kept? */
- vlib_node_increment_counter (vm, node->node_index,
- PPPOE_ENCAP_ERROR_ENCAPSULATED,
- pkts_encapsulated);
-
- /* Increment any remaining batch stats */
- if (stats_n_packets)
- {
- vlib_increment_combined_counter
- (im->combined_sw_if_counters + VNET_INTERFACE_COUNTER_TX,
- thread_index, stats_sw_if_index, stats_n_packets, stats_n_bytes);
- node->runtime_data[0] = stats_sw_if_index;
- }
-
- return from_frame->n_vectors;
-}
-
-VLIB_REGISTER_NODE (pppoe_encap_node) = {
- .function = pppoe_encap,
- .name = "pppoe-encap",
- .vector_size = sizeof (u32),
- .format_trace = format_pppoe_encap_trace,
- .type = VLIB_NODE_TYPE_INTERNAL,
- .n_errors = ARRAY_LEN(pppoe_encap_error_strings),
- .error_strings = pppoe_encap_error_strings,
- .n_next_nodes = PPPOE_ENCAP_N_NEXT,
- .next_nodes = {
-#define _(s,n) [PPPOE_ENCAP_NEXT_##s] = n,
- foreach_pppoe_encap_next
-#undef _
- },
-};
-
-VLIB_NODE_FUNCTION_MULTIARCH (pppoe_encap_node, pppoe_encap)
-