diff options
Diffstat (limited to 'build-root/emacs-lisp/tunnel-encap-skel.el')
| -rw-r--r-- | build-root/emacs-lisp/tunnel-encap-skel.el | 245 |
1 files changed, 0 insertions, 245 deletions
diff --git a/build-root/emacs-lisp/tunnel-encap-skel.el b/build-root/emacs-lisp/tunnel-encap-skel.el deleted file mode 100644 index 9c98a597..00000000 --- a/build-root/emacs-lisp/tunnel-encap-skel.el +++ /dev/null @@ -1,245 +0,0 @@ -;;; tunnel-encap-skel.el - tunnel interface output skeleton - -(require 'skeleton) - -(define-skeleton skel-tunnel-encap -"Insert a tunnel encap 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 <vppinfra/error.h> -#include <vppinfra/hash.h> -#include <vnet/vnet.h> -#include <vnet/ip/ip.h> -#include <vnet/ethernet/ethernet.h> -#include <vnet/" encap-stack "/" encap_stack ".h> - -/* Statistics (not really errors) */ -#define foreach_" encap_stack "_encap_error \\ -_(ENCAPSULATED, \"good packets encapsulated\") - -static char * " encap_stack "_encap_error_strings[] = { -#define _(sym,string) string, - foreach_" encap_stack "_encap_error -#undef _ -}; - -typedef enum { -#define _(sym,str) " ENCAP_STACK "_ENCAP_ERROR_##sym, - foreach_" encap_stack "_encap_error -#undef _ - " ENCAP_STACK "_ENCAP_N_ERROR, -} " encap_stack "_encap_error_t; - -typedef enum { - " ENCAP_STACK "_ENCAP_NEXT_IP4_LOOKUP, - " ENCAP_STACK "_ENCAP_NEXT_DROP, - " ENCAP_STACK "_ENCAP_N_NEXT, -} " encap_stack "_encap_next_t; - -typedef struct { - u32 tunnel_index; -} " encap_stack "_encap_trace_t; - -u8 * format_" encap_stack "_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 *); - " encap_stack "_encap_trace_t * t - = va_arg (*args, " encap_stack "_encap_trace_t *); - - s = format (s, \"" ENCAP-STACK ": tunnel %d\", t->tunnel_index); - return s; -} - -/* $$$$ FIXME adjust to match the rewrite string */ -#define foreach_fixed_header_offset \\ -_(0) _(1) _(2) _(3) _(FIXME) - -static uword -" encap_stack "_encap (vlib_main_t * vm, - vlib_node_runtime_t * node, - vlib_frame_t * from_frame) -{ - u32 n_left_from, next_index, * from, * to_next; - " encap_stack "_main_t * ngm = &" encap_stack "_main; - vnet_main_t * vnm = ngm->vnet_main; - u32 pkts_encapsulated = 0; - u16 old_l0 = 0, old_l1 = 0; - - from = vlib_frame_vector_args (from_frame); - n_left_from = from_frame->n_vectors; - - next_index = node->cached_next_index; - - while (n_left_from > 0) - { - u32 n_left_to_next; - - vlib_get_next_frame (vm, node, next_index, - to_next, n_left_to_next); - -#if 0 /* $$$ 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 "_ENCAP_NEXT_IP4_LOOKUP; - - 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 "_ENCAP_NEXT_IP4_LOOKUP; - vnet_hw_interface_t * hi0; - ip4_header_t * ip0; - udp_header_t * udp0; - u64 * copy_src0, * copy_dst0; - u32 * copy_src_last0, * copy_dst_last0; - " encap_stack "_tunnel_t * t0; - u16 new_l0; - ip_csum_t sum0; - - 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); - - /* 1-wide cache? */ - hi0 = vnet_get_sup_hw_interface - (vnm, vnet_buffer(b0)->sw_if_index[VLIB_TX]); - - t0 = pool_elt_at_index (ngm->tunnels, hi0->dev_instance); - - ASSERT(vec_len(t0->rewrite) >= 24); - - /* Apply the rewrite string. $$$$ vnet_rewrite? */ - vlib_buffer_advance (b0, -(word)_vec_len(t0->rewrite)); - - ip0 = vlib_buffer_get_current(b0); - /* Copy the fixed header */ - copy_dst0 = (u64 *) ip0; - copy_src0 = (u64 *) t0->rewrite; - - ASSERT (sizeof (ip4_udp_" encap_stack "_header_t) == FIXME); - - /* Copy first N octets 8-bytes at a time */ -#define _(offs) copy_dst0[offs] = copy_src0[offs]; - foreach_fixed_header_offset; -#undef _ -#if 0 /* needed if encap not a multiple of 8 bytes */ - /* Last 4 octets. Hopefully gcc will be our friend */ - copy_dst_last0 = (u32 *)(©_dst0[FIXME]); - copy_src_last0 = (u32 *)(©_src0[FIXME]); - copy_dst_last0[0] = copy_src_last0[0]; - -#endif - /* fix the <bleep>ing outer-IP checksum */ - sum0 = ip0->checksum; - /* old_l0 always 0, see the rewrite setup */ - new_l0 = - clib_host_to_net_u16 (vlib_buffer_length_in_chain (vm, b0)); - - sum0 = ip_csum_update (sum0, old_l0, new_l0, ip4_header_t, - length /* changed member */); - ip0->checksum = ip_csum_fold (sum0); - ip0->length = new_l0; - - /* Fix UDP length */ - udp0 = (udp_header_t *)(ip0+1); - new_l0 = clib_host_to_net_u16 (vlib_buffer_length_in_chain (vm, b0) - - sizeof (*ip0)); - - udp0->length = new_l0; - - /* Reset to look up tunnel partner in the configured FIB */ - vnet_buffer(b0)->sw_if_index[VLIB_TX] = t0->encap_fib_index; - pkts_encapsulated ++; - - if (PREDICT_FALSE(b0->flags & VLIB_BUFFER_IS_TRACED)) - { - " encap_stack "_encap_trace_t *tr = - vlib_add_trace (vm, node, b0, sizeof (*tr)); - tr->tunnel_index = t0 - ngm->tunnels; - } - 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, node->node_index, - " ENCAP_STACK "_ENCAP_ERROR_ENCAPSULATED, - pkts_encapsulated); - return from_frame->n_vectors; -} - -VLIB_REGISTER_NODE (" encap_stack "_encap_node) = { - .function = " encap_stack "_encap, - .name = \"" encap-stack "-encap\", - .vector_size = sizeof (u32), - .format_trace = format_" encap_stack "_encap_trace, - .type = VLIB_NODE_TYPE_INTERNAL, - - .n_errors = ARRAY_LEN(" encap_stack "_encap_error_strings), - .error_strings = " encap_stack "_encap_error_strings, - - .n_next_nodes = " ENCAP_STACK "_ENCAP_N_NEXT, - - .next_nodes = { - [" ENCAP_STACK "_ENCAP_NEXT_IP4_LOOKUP] = \"ip4-lookup\", - [" ENCAP_STACK "_ENCAP_NEXT_DROP] = \"error-drop\", - }, -}; -") |