diff options
Diffstat (limited to 'build-root/emacs-lisp/tunnel-decap-skel.el')
| -rw-r--r-- | build-root/emacs-lisp/tunnel-decap-skel.el | 299 |
1 files changed, 0 insertions, 299 deletions
diff --git a/build-root/emacs-lisp/tunnel-decap-skel.el b/build-root/emacs-lisp/tunnel-decap-skel.el deleted file mode 100644 index 380273b6..00000000 --- a/build-root/emacs-lisp/tunnel-decap-skel.el +++ /dev/null @@ -1,299 +0,0 @@ -;;; tunnel-decap-skel.el - tunnel decapsulation skeleton - -(require 'skeleton) - -(define-skeleton skel-tunnel-decap -"Insert a tunnel decap implementation" -nil -'(setq encap_stack (skeleton-read "encap_stack (e.g ip4_udp_lisp): ")) -'(setq ENCAP_STACK (upcase encap_stack)) -'(setq encap-stack (replace-regexp-in-string "_" "-" encap_stack)) -'(setq ENCAP-STACK (upcase encap-stack)) -" -#include <vlib/vlib.h> -#include <vnet/pg/pg.h> -#include <vnet/" encap-stack "/" encap_stack ".h> - -typedef struct { - u32 next_index; - u32 tunnel_index; - u32 error; - " encap_stack "_header_t h; -} " encap_stack "_rx_trace_t; - -static u8 * format_" encap_stack "_rx_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 *); - " encap_stack "_rx_trace_t * t = va_arg (*args, " encap_stack "_rx_trace_t *); - - if (t->tunnel_index != ~0) - { - s = format (s, \"" ENCAP-STACK ": tunnel %d next %d error %d\", - t->tunnel_index, t->next_index, t->error); - } - else - { - s = format (s, \"" ENCAP-STACK ": no tunnel next %d error %d\\n\", - t->next_index, t->error); - } - s = format (s, \"\\n %U\", format_" encap_stack "_header_with_length, &t->h, - (u32) sizeof (t->h) /* max size */); - return s; -} - -static uword -" encap_stack "_input (vlib_main_t * vm, - vlib_node_runtime_t * node, - vlib_frame_t * from_frame) -{ - u32 n_left_from, next_index, * from, * to_next; - " encap_stack "_main_t * ngm = &" encap_stack "_main; - u32 last_tunnel_index = ~0; - " encap_stack "_tunnel_key_t last_key; - u32 pkts_decapsulated = 0; - - memset (&last_key, 0xff, sizeof (last_key)); - - 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); - -#if 0 /* $$$ dual loop when the single loop works */ - while (n_left_from >= 4 && n_left_to_next >= 2) - { - u32 bi0, bi1; - vlib_buffer_t * b0, * b1; - nsh_unicast_header_t * h0, * h1; - u32 label0, label1; - u32 next0, next1; - uword * p0, * p1; - - /* 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); - - h0 = vlib_buffer_get_current (b0); - h1 = vlib_buffer_get_current (b1); - - next0 = next1 = " ENCAP_STACK "_INPUT_NEXT_IP4_INPUT; - - label0 = clib_net_to_host_u32 (h0->label_exp_s_ttl); - label1 = clib_net_to_host_u32 (h1->label_exp_s_ttl); - - /* - * Translate label contents into a fib index. - * This is a decent sanity check, and guarantees - * a sane FIB for the downstream lookup - */ - label0 = vnet_nsh_uc_get_label (label0); - label1 = vnet_nsh_uc_get_label (label1); - - /* If 2xlabels match, and match the 1-wide cache, use it */ - if (label0 == label1 && rt->last_label == label0) - { - vnet_buffer(b0)->sw_if_index[VLIB_TX] = rt->last_fib_index; - vnet_buffer(b1)->sw_if_index[VLIB_TX] = rt->last_fib_index; - } - else - { - p0 = hash_get (rt->mm->fib_index_by_nsh_label, label0); - if (PREDICT_FALSE (p0 == 0)) - { - next0 = " ENCAP_STACK "_INPUT_NEXT_DROP; - b0->error = node->errors[NSH_ERROR_BAD_LABEL]; - } - else - vnet_buffer(b0)->sw_if_index[VLIB_TX] = p0[0]; - - p1 = hash_get (rt->mm->fib_index_by_nsh_label, label1); - if (PREDICT_FALSE (p1 == 0)) - { - next1 = " ENCAP_STACK "_INPUT_NEXT_DROP; - b1->error = node->errors[NSH_ERROR_BAD_LABEL]; - } - else - { - vnet_buffer(b1)->sw_if_index[VLIB_TX] = p1[0]; - rt->last_fib_index = p1[0]; - rt->last_label = label1; - } - } - - if (PREDICT_FALSE(b0->flags & VLIB_BUFFER_IS_TRACED)) - { - nsh_rx_trace_t *tr = vlib_add_trace (vm, node, - b0, sizeof (*tr)); - tr->label_exp_s_ttl = label0; - } - if (PREDICT_FALSE(b1->flags & VLIB_BUFFER_IS_TRACED)) - { - nsh_rx_trace_t *tr = vlib_add_trace (vm, node, - b1, sizeof (*tr)); - tr->label_exp_s_ttl = label1; - } - - vlib_buffer_advance (b0, sizeof (*h0)); - vlib_buffer_advance (b1, sizeof (*h1)); - - vlib_validate_buffer_enqueue_x2 (vm, node, next_index, - to_next, n_left_to_next, - bi0, bi1, next0, next1); - } -#endif - - while (n_left_from > 0 && n_left_to_next > 0) - { - u32 bi0; - vlib_buffer_t * b0; - u32 next0; - " encap_stack "_header_t * iuX0; - uword * p0; - u32 tunnel_index0; - " encap_stack "_tunnel_t * t0; - " encap_stack "_tunnel_key_t key0; - u32 error0; - - 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); - - /* - * udp leaves current_data pointing at the tunnel header - * $$$$ FIXME - */ - vlib_buffer_advance - (b0, -(word)(sizeof(udp_header_t)+sizeof(ip4_header_t))); - - iuX0 = vlib_buffer_get_current (b0); - - /* pop (ip, udp, lisp-gpe) */ - vlib_buffer_advance (b0, sizeof (*iuX0)); - - tunnel_index0 = ~0; - error0 = 0; - next0 = " ENCAP_STACK "_INPUT_NEXT_DROP; - - key0.src = iuX0->ip4.src_address.as_u32; - key0.iid = iuX0->lisp.iid; - - /* $$$ validate key comparison */ - if (PREDICT_FALSE ((key0.as_u64[0] != last_key.as_u64[0]))) - { - p0 = hash_get_mem (ngm->" encap_stack "_tunnel_by_key, &key0); - - if (p0 == 0) - { - error0 = " ENCAP_STACK "_ERROR_NO_SUCH_TUNNEL; - goto trace0; - } - - last_key.as_u64[0] = key0.as_u64[0]; - tunnel_index0 = last_tunnel_index = p0[0]; - } - else - tunnel_index0 = last_tunnel_index; - - t0 = pool_elt_at_index (ngm->tunnels, tunnel_index0); - - next0 = t0->decap_next_index; - - /* Required to make the l2 tag push / pop code work on l2 subifs */ - vnet_update_l2_len (b0); - - /* - * ip[46] lookup in the configured FIB - * " encap-stack ", here's the encap tunnel sw_if_index - */ - vnet_buffer(b0)->sw_if_index[VLIB_TX] = t0->decap_fib_index; - pkts_decapsulated ++; - - trace0: - b0->error = error0 ? node->errors[error0] : 0; - - if (PREDICT_FALSE(b0->flags & VLIB_BUFFER_IS_TRACED)) - { - " encap_stack "_rx_trace_t *tr - = vlib_add_trace (vm, node, b0, sizeof (*tr)); - tr->next_index = next0; - tr->error = error0; - tr->tunnel_index = tunnel_index0; - tr->h = iuX0->lisp; - } - 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); - } - vlib_node_increment_counter (vm, " encap_stack "_input_node.index, - " ENCAP_STACK "_ERROR_DECAPSULATED, - pkts_decapsulated); - return from_frame->n_vectors; -} - -static char * " encap_stack "_error_strings[] = { -#define " encap_stack "_error(n,s) s, -#include <vnet/" encap-stack "/" encap_stack "_error.def> -#undef " encap_stack "_error -#undef _ -}; - -VLIB_REGISTER_NODE (" encap_stack "_input_node) = { - .function = \"" encap_stack "_input\", - .name = \"" encap-stack "-input\", - /* Takes a vector of packets. */ - .vector_size = sizeof (u32), - - .n_errors = " ENCAP_STACK "_N_ERROR, - .error_strings = " encap_stack "_error_strings, - - .n_next_nodes = " ENCAP_STACK "_INPUT_N_NEXT, - .next_nodes = { -#define _(s,n) [" ENCAP_STACK "_INPUT_NEXT_##s] = n, - foreach_" encap_stack "_input_next -#undef _ - }, - - .format_buffer = format_" encap_stack "_header_with_length, - .format_trace = format_" encap_stack "_rx_trace, - // $$$$ .unformat_buffer = unformat_" encap_stack "_header, -}; - -") |