ip: reassembly - custom context of ipv6
Change-Id: Ia5ec7fc0c71e6a0ad1b43df24bb6b88e616d260d
Type: improvement
Signed-off-by: Mohammed Hawari <mohammed@hawari.fr>
diff --git a/src/vnet/ip/reass/ip6_sv_reass.c b/src/vnet/ip/reass/ip6_sv_reass.c
index c7f64ca..0a17cc1 100644
--- a/src/vnet/ip/reass/ip6_sv_reass.c
+++ b/src/vnet/ip/reass/ip6_sv_reass.c
@@ -150,6 +150,7 @@
/** Worker handoff */
u32 fq_index;
u32 fq_feature_index;
+ u32 fq_custom_context_index;
// reference count for enabling/disabling feature - per interface
u32 *feature_use_refcount_per_intf;
@@ -513,14 +514,18 @@
}
always_inline uword
-ip6_sv_reassembly_inline (vlib_main_t * vm,
- vlib_node_runtime_t * node,
- vlib_frame_t * frame, bool is_feature)
+ip6_sv_reassembly_inline (vlib_main_t *vm, vlib_node_runtime_t *node,
+ vlib_frame_t *frame, bool is_feature,
+ bool custom_next, bool custom_context)
{
u32 *from = vlib_frame_vector_args (frame);
- u32 n_left_from, n_left_to_next, *to_next, next_index;
+ u32 n_left_from, n_left_to_next, *to_next, *to_next_aux, next_index;
ip6_sv_reass_main_t *rm = &ip6_sv_reass_main;
ip6_sv_reass_per_thread_t *rt = &rm->per_thread_data[vm->thread_index];
+ u32 *context;
+ if (custom_context)
+ context = vlib_frame_aux_args (frame);
+
clib_spinlock_lock (&rt->lock);
n_left_from = frame->n_vectors;
@@ -528,7 +533,11 @@
while (n_left_from > 0)
{
- vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
+ if (custom_context)
+ vlib_get_next_frame_with_aux_safe (vm, node, next_index, to_next,
+ to_next_aux, n_left_to_next);
+ else
+ vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
while (n_left_from > 0 && n_left_to_next > 0)
{
@@ -536,7 +545,7 @@
vlib_buffer_t *b0;
u32 next0 = IP6_SV_REASSEMBLY_NEXT_DROP;
u32 error0 = IP6_ERROR_NONE;
-
+ u8 forward_context = 0;
bi0 = from[0];
b0 = vlib_get_buffer (vm, bi0);
@@ -576,7 +585,8 @@
goto packet_enqueue;
}
vnet_buffer (b0)->ip.reass.is_non_first_fragment = 0;
- next0 = IP6_SV_REASSEMBLY_NEXT_INPUT;
+ next0 = custom_next ? vnet_buffer (b0)->ip.reass.next_index :
+ IP6_SV_REASSEMBLY_NEXT_INPUT;
if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
{
ip6_sv_reass_add_trace (
@@ -615,10 +625,15 @@
kv.k.as_u64[1] = ip0->src_address.as_u64[1];
kv.k.as_u64[2] = ip0->dst_address.as_u64[0];
kv.k.as_u64[3] = ip0->dst_address.as_u64[1];
- kv.k.as_u64[4] =
- ((u64) vec_elt (ip6_main.fib_index_by_sw_if_index,
- vnet_buffer (b0)->sw_if_index[VLIB_RX])) << 32 |
- (u64) frag_hdr->identification;
+ if (custom_context)
+ kv.k.as_u64[4] =
+ (u64) *context << 32 | (u64) frag_hdr->identification;
+ else
+ kv.k.as_u64[4] =
+ ((u64) vec_elt (ip6_main.fib_index_by_sw_if_index,
+ vnet_buffer (b0)->sw_if_index[VLIB_RX]))
+ << 32 |
+ (u64) frag_hdr->identification;
kv.k.as_u64[5] = ip0->protocol;
ip6_sv_reass_t *reass =
@@ -629,6 +644,8 @@
next0 = IP6_SV_REASSEMBLY_NEXT_HANDOFF;
vnet_buffer (b0)->ip.reass.owner_thread_index =
kv.v.thread_index;
+ if (custom_context)
+ forward_context = 1;
goto packet_enqueue;
}
@@ -653,7 +670,8 @@
reass->tcp_seq_number;
vnet_buffer (b0)->ip.reass.l4_src_port = reass->l4_src_port;
vnet_buffer (b0)->ip.reass.l4_dst_port = reass->l4_dst_port;
- next0 = IP6_SV_REASSEMBLY_NEXT_INPUT;
+ next0 = custom_next ? vnet_buffer (b0)->ip.reass.next_index :
+ IP6_SV_REASSEMBLY_NEXT_INPUT;
if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
{
ip6_sv_reass_add_trace (
@@ -748,11 +766,25 @@
b0 = vlib_get_buffer (vm, bi0);
vnet_feature_next (&next0, b0);
}
- vlib_validate_buffer_enqueue_x1 (vm, node, next_index, to_next,
- n_left_to_next, bi0, next0);
+ if (custom_context && forward_context)
+ {
+ if (to_next_aux)
+ {
+ to_next_aux[0] = *context;
+ to_next_aux += 1;
+ }
+ vlib_validate_buffer_enqueue_with_aux_x1 (
+ vm, node, next_index, to_next, to_next_aux, n_left_to_next,
+ bi0, *context, next0);
+ }
+ else
+ vlib_validate_buffer_enqueue_x1 (vm, node, next_index, to_next,
+ n_left_to_next, bi0, next0);
next_packet:
from += 1;
+ if (custom_context)
+ context += 1;
n_left_from -= 1;
}
@@ -767,7 +799,9 @@
vlib_node_runtime_t * node,
vlib_frame_t * frame)
{
- return ip6_sv_reassembly_inline (vm, node, frame, false /* is_feature */ );
+ return ip6_sv_reassembly_inline (vm, node, frame, false /* is_feature */,
+ false /* custom next */,
+ false /* custom context */);
}
/* *INDENT-OFF* */
@@ -792,7 +826,9 @@
vlib_node_runtime_t * node,
vlib_frame_t * frame)
{
- return ip6_sv_reassembly_inline (vm, node, frame, true /* is_feature */ );
+ return ip6_sv_reassembly_inline (vm, node, frame, true /* is_feature */,
+ false /* custom next */,
+ false /* custom context */);
}
/* *INDENT-OFF* */
@@ -822,6 +858,31 @@
};
/* *INDENT-ON* */
+VLIB_NODE_FN (ip6_sv_reass_custom_context_node)
+(vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *frame)
+{
+ return ip6_sv_reassembly_inline (vm, node, frame, false /* is_feature */,
+ true /* custom next */,
+ true /* custom context */);
+}
+
+VLIB_REGISTER_NODE (ip6_sv_reass_custom_context_node) = {
+ .name = "ip6-sv-reassembly-custom-context",
+ .vector_size = sizeof (u32),
+ .aux_size = sizeof (u32),
+ .format_trace = format_ip6_sv_reass_trace,
+ .n_errors = IP6_N_ERROR,
+ .error_counters = ip6_error_counters,
+ .n_next_nodes = IP6_SV_REASSEMBLY_N_NEXT,
+ .next_nodes =
+ {
+ [IP6_SV_REASSEMBLY_NEXT_INPUT] = "ip6-input",
+ [IP6_SV_REASSEMBLY_NEXT_DROP] = "ip6-drop",
+ [IP6_SV_REASSEMBLY_NEXT_ICMP_ERROR] = "ip6-icmp-error",
+ [IP6_SV_REASSEMBLY_NEXT_HANDOFF] = "ip6-sv-reassembly-custom-context-handoff",
+ },
+};
+
#ifndef CLIB_MARCH_VARIANT
static u32
ip6_sv_reass_get_nbuckets ()
@@ -971,6 +1032,8 @@
rm->fq_index = vlib_frame_queue_main_init (ip6_sv_reass_node.index, 0);
rm->fq_feature_index =
vlib_frame_queue_main_init (ip6_sv_reass_node_feature.index, 0);
+ rm->fq_custom_context_index =
+ vlib_frame_queue_main_init (ip6_sv_reass_custom_context_node.index, 0);
rm->feature_use_refcount_per_intf = NULL;
@@ -1214,25 +1277,29 @@
}
always_inline uword
-ip6_sv_reassembly_handoff_inline (vlib_main_t * vm,
- vlib_node_runtime_t * node,
- vlib_frame_t * frame, bool is_feature)
+ip6_sv_reassembly_handoff_inline (vlib_main_t *vm, vlib_node_runtime_t *node,
+ vlib_frame_t *frame, bool is_feature,
+ bool custom_context)
{
ip6_sv_reass_main_t *rm = &ip6_sv_reass_main;
vlib_buffer_t *bufs[VLIB_FRAME_SIZE], **b;
- u32 n_enq, n_left_from, *from;
+ u32 n_enq, n_left_from, *from, *context;
u16 thread_indices[VLIB_FRAME_SIZE], *ti;
u32 fq_index;
from = vlib_frame_vector_args (frame);
+ if (custom_context)
+ context = vlib_frame_aux_args (frame);
n_left_from = frame->n_vectors;
vlib_get_buffers (vm, from, bufs, n_left_from);
b = bufs;
ti = thread_indices;
- fq_index = (is_feature) ? rm->fq_feature_index : rm->fq_index;
+ fq_index = (is_feature) ?
+ rm->fq_feature_index :
+ (custom_context ? rm->fq_custom_context_index : rm->fq_index);
while (n_left_from > 0)
{
@@ -1251,8 +1318,12 @@
ti += 1;
b += 1;
}
- n_enq = vlib_buffer_enqueue_to_thread (vm, node, fq_index, from,
- thread_indices, frame->n_vectors, 1);
+ if (custom_context)
+ n_enq = vlib_buffer_enqueue_to_thread_with_aux (
+ vm, node, fq_index, from, context, thread_indices, frame->n_vectors, 1);
+ else
+ n_enq = vlib_buffer_enqueue_to_thread (
+ vm, node, fq_index, from, thread_indices, frame->n_vectors, 1);
if (n_enq < frame->n_vectors)
vlib_node_increment_counter (vm, node->node_index,
@@ -1265,8 +1336,8 @@
vlib_node_runtime_t * node,
vlib_frame_t * frame)
{
- return ip6_sv_reassembly_handoff_inline (vm, node, frame,
- false /* is_feature */ );
+ return ip6_sv_reassembly_handoff_inline (
+ vm, node, frame, false /* is_feature */, false /* custom_context */);
}
/* *INDENT-OFF* */
@@ -1288,7 +1359,8 @@
VLIB_NODE_FN (ip6_sv_reassembly_feature_handoff_node) (vlib_main_t * vm,
vlib_node_runtime_t * node, vlib_frame_t * frame)
{
- return ip6_sv_reassembly_handoff_inline (vm, node, frame, true /* is_feature */ );
+ return ip6_sv_reassembly_handoff_inline (
+ vm, node, frame, true /* is_feature */, false /* custom_context */);
}
@@ -1308,6 +1380,28 @@
};
/* *INDENT-ON* */
+VLIB_NODE_FN (ip6_sv_reassembly_custom_context_handoff_node)
+(vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *frame)
+{
+ return ip6_sv_reassembly_handoff_inline (
+ vm, node, frame, false /* is_feature */, true /* custom_context */);
+}
+
+VLIB_REGISTER_NODE (ip6_sv_reassembly_custom_context_handoff_node) = {
+ .name = "ip6-sv-reassembly-custom-context-handoff",
+ .vector_size = sizeof (u32),
+ .aux_size = sizeof (u32),
+ .n_errors = ARRAY_LEN(ip6_sv_reassembly_handoff_error_strings),
+ .error_strings = ip6_sv_reassembly_handoff_error_strings,
+ .format_trace = format_ip6_sv_reassembly_handoff_trace,
+
+ .n_next_nodes = 1,
+
+ .next_nodes = {
+ [0] = "error-drop",
+ },
+};
+
#ifndef CLIB_MARCH_VARIANT
int
ip6_sv_reass_enable_disable_with_refcnt (u32 sw_if_index, int is_enable)
@@ -1335,6 +1429,14 @@
}
return 0;
}
+
+uword
+ip6_sv_reass_custom_context_register_next_node (uword node_index)
+{
+ return vlib_node_add_next (
+ vlib_get_main (), ip6_sv_reassembly_custom_context_handoff_node.index,
+ node_index);
+}
#endif
/*