X-Git-Url: https://gerrit.fd.io/r/gitweb?a=blobdiff_plain;f=src%2Fvnet%2Fgre%2Fnode.c;h=92523069f05f1d7269db5f73c869018eba104153;hb=59ff918ea;hp=86f7a6eeea49c2c8d1c6a11749dfd18680077d3f;hpb=7cd468a3d7dee7d6c92f69a0bb7061ae208ec727;p=vpp.git diff --git a/src/vnet/gre/node.c b/src/vnet/gre/node.c index 86f7a6eeea4..92523069f05 100644 --- a/src/vnet/gre/node.c +++ b/src/vnet/gre/node.c @@ -29,396 +29,450 @@ _(IP4_INPUT, "ip4-input") \ _(IP6_INPUT, "ip6-input") \ _(MPLS_INPUT, "mpls-input") -typedef enum { +typedef enum +{ #define _(s,n) GRE_INPUT_NEXT_##s, foreach_gre_input_next #undef _ - GRE_INPUT_N_NEXT, + GRE_INPUT_N_NEXT, } gre_input_next_t; -typedef struct { +typedef struct +{ u32 tunnel_id; u32 length; - ip4_address_t src; - ip4_address_t dst; + ip46_address_t src; + ip46_address_t dst; } gre_rx_trace_t; -u8 * format_gre_rx_trace (u8 * s, va_list * args) +extern u8 *format_gre_rx_trace (u8 * s, va_list * args); + +#ifndef CLIB_MARCH_VARIANT +u8 * +format_gre_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 *); - gre_rx_trace_t * t = va_arg (*args, gre_rx_trace_t *); - + gre_rx_trace_t *t = va_arg (*args, gre_rx_trace_t *); + s = format (s, "GRE: tunnel %d len %d src %U dst %U", - t->tunnel_id, clib_net_to_host_u16(t->length), - format_ip4_address, &t->src.as_u8, - format_ip4_address, &t->dst.as_u8); + t->tunnel_id, clib_net_to_host_u16 (t->length), + format_ip46_address, &t->src, IP46_TYPE_ANY, + format_ip46_address, &t->dst, IP46_TYPE_ANY); return s; } +#endif /* CLIB_MARCH_VARIANT */ -typedef struct { +typedef struct +{ /* Sparse vector mapping gre protocol in network byte order to next index. */ - u16 * next_by_protocol; + u16 *next_by_protocol; } gre_input_runtime_t; -static uword +always_inline void +gre_trace (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_buffer_t * b, + u32 tun_sw_if_index, const ip6_header_t * ip6, + const ip4_header_t * ip4, int is_ipv6) +{ + gre_rx_trace_t *tr = vlib_add_trace (vm, node, + b, sizeof (*tr)); + tr->tunnel_id = tun_sw_if_index; + if (is_ipv6) + { + tr->length = ip6->payload_length; + tr->src.ip6.as_u64[0] = ip6->src_address.as_u64[0]; + tr->src.ip6.as_u64[1] = ip6->src_address.as_u64[1]; + tr->dst.ip6.as_u64[0] = ip6->dst_address.as_u64[0]; + tr->dst.ip6.as_u64[1] = ip6->dst_address.as_u64[1]; + } + else + { + tr->length = ip4->length; + tr->src.as_u64[0] = tr->src.as_u64[1] = 0; + tr->dst.as_u64[0] = tr->dst.as_u64[1] = 0; + tr->src.ip4.as_u32 = ip4->src_address.as_u32; + tr->dst.ip4.as_u32 = ip4->dst_address.as_u32; + } +} + +always_inline void +gre_tunnel_get (const gre_main_t * gm, vlib_node_runtime_t * node, + vlib_buffer_t * b, u16 * next, const gre_tunnel_key_t * key, + gre_tunnel_key_t * cached_key, u32 * tun_sw_if_index, + u32 * cached_tun_sw_if_index, int is_ipv6) +{ + const uword *p; + p = is_ipv6 ? hash_get_mem (gm->tunnel_by_key6, &key->gtk_v6) + : hash_get_mem (gm->tunnel_by_key4, &key->gtk_v4); + if (PREDICT_FALSE (!p)) + { + *next = GRE_INPUT_NEXT_DROP; + b->error = node->errors[GRE_ERROR_NO_SUCH_TUNNEL]; + *tun_sw_if_index = ~0; + } + else + { + const gre_tunnel_t *tun; + tun = pool_elt_at_index (gm->tunnels, *p); + *cached_tun_sw_if_index = *tun_sw_if_index = tun->sw_if_index; + if (is_ipv6) + cached_key->gtk_v6 = key->gtk_v6; + else + cached_key->gtk_v4 = key->gtk_v4; + } +} + +always_inline uword gre_input (vlib_main_t * vm, - vlib_node_runtime_t * node, - vlib_frame_t * from_frame) + vlib_node_runtime_t * node, vlib_frame_t * frame, + const int is_ipv6) { - gre_main_t * gm = &gre_main; - gre_input_runtime_t * rt = (void *) node->runtime_data; - __attribute__((unused)) u32 n_left_from, next_index, * from, * to_next; - u64 cached_tunnel_key = (u64) ~0; - u32 cached_tunnel_sw_if_index = 0, tunnel_sw_if_index = 0; + gre_main_t *gm = &gre_main; + u32 *from, n_left_from; + vlib_buffer_t *bufs[VLIB_FRAME_SIZE], **b = bufs; + u16 nexts[VLIB_FRAME_SIZE], *next = nexts; + u16 cached_protocol = ~0; + u32 cached_next_index = SPARSE_VEC_INVALID_INDEX; + u32 cached_tun_sw_if_index = ~0; + gre_tunnel_key_t cached_key; + + from = vlib_frame_vector_args (frame); + n_left_from = frame->n_vectors; + vlib_get_buffers (vm, from, bufs, n_left_from); + + if (is_ipv6) + clib_memset (&cached_key.gtk_v6, 0xff, sizeof (cached_key.gtk_v6)); + else + clib_memset (&cached_key.gtk_v4, 0xff, sizeof (cached_key.gtk_v4)); + + while (n_left_from >= 2) + { + const ip6_header_t *ip6[2]; + const ip4_header_t *ip4[2]; + const gre_header_t *gre[2]; + u32 nidx[2]; + next_info_t ni[2]; + u8 type[2]; + u16 version[2]; + u32 len[2]; + gre_tunnel_key_t key[2]; + u8 matched[2]; + u32 tun_sw_if_index[2]; + + if (PREDICT_TRUE (n_left_from >= 6)) + { + vlib_prefetch_buffer_data (b[2], LOAD); + vlib_prefetch_buffer_data (b[3], LOAD); + vlib_prefetch_buffer_header (b[4], STORE); + vlib_prefetch_buffer_header (b[5], STORE); + } - u32 cpu_index = os_get_cpu_number(); - u32 len; - vnet_interface_main_t *im = &gm->vnet_main->interface_main; + if (is_ipv6) + { + /* ip6_local hands us the ip header, not the gre header */ + ip6[0] = vlib_buffer_get_current (b[0]); + ip6[1] = vlib_buffer_get_current (b[1]); + gre[0] = (void *) (ip6[0] + 1); + gre[1] = (void *) (ip6[1] + 1); + vlib_buffer_advance (b[0], sizeof (*ip6[0]) + sizeof (*gre[0])); + vlib_buffer_advance (b[1], sizeof (*ip6[0]) + sizeof (*gre[0])); + } + else + { + /* ip4_local hands us the ip header, not the gre header */ + ip4[0] = vlib_buffer_get_current (b[0]); + ip4[1] = vlib_buffer_get_current (b[1]); + gre[0] = (void *) (ip4[0] + 1); + gre[1] = (void *) (ip4[1] + 1); + vlib_buffer_advance (b[0], sizeof (*ip4[0]) + sizeof (*gre[0])); + vlib_buffer_advance (b[1], sizeof (*ip4[0]) + sizeof (*gre[0])); + } - from = vlib_frame_vector_args (from_frame); - n_left_from = from_frame->n_vectors; + if (PREDICT_TRUE (cached_protocol == gre[0]->protocol)) + { + nidx[0] = cached_next_index; + } + else + { + cached_next_index = nidx[0] = + sparse_vec_index (gm->next_by_protocol, gre[0]->protocol); + cached_protocol = gre[0]->protocol; + } + if (PREDICT_TRUE (cached_protocol == gre[1]->protocol)) + { + nidx[1] = cached_next_index; + } + else + { + cached_next_index = nidx[1] = + sparse_vec_index (gm->next_by_protocol, gre[1]->protocol); + cached_protocol = gre[1]->protocol; + } - next_index = node->cached_next_index; + ni[0] = vec_elt (gm->next_by_protocol, nidx[0]); + ni[1] = vec_elt (gm->next_by_protocol, nidx[1]); + next[0] = ni[0].next_index; + next[1] = ni[1].next_index; + type[0] = ni[0].tunnel_type; + type[1] = ni[1].tunnel_type; + + b[0]->error = nidx[0] == SPARSE_VEC_INVALID_INDEX + ? node->errors[GRE_ERROR_UNKNOWN_PROTOCOL] + : node->errors[GRE_ERROR_NONE]; + b[1]->error = nidx[1] == SPARSE_VEC_INVALID_INDEX + ? node->errors[GRE_ERROR_UNKNOWN_PROTOCOL] + : node->errors[GRE_ERROR_NONE]; + + version[0] = clib_net_to_host_u16 (gre[0]->flags_and_version); + version[1] = clib_net_to_host_u16 (gre[1]->flags_and_version); + version[0] &= GRE_VERSION_MASK; + version[1] &= GRE_VERSION_MASK; + + b[0]->error = version[0] + ? node->errors[GRE_ERROR_UNSUPPORTED_VERSION] : b[0]->error; + next[0] = version[0] ? GRE_INPUT_NEXT_DROP : next[0]; + b[1]->error = version[1] + ? node->errors[GRE_ERROR_UNSUPPORTED_VERSION] : b[1]->error; + next[1] = version[1] ? GRE_INPUT_NEXT_DROP : next[1]; + + len[0] = vlib_buffer_length_in_chain (vm, b[0]); + len[1] = vlib_buffer_length_in_chain (vm, b[1]); + + /* always search for P2P types in the DP */ + if (is_ipv6) + { + gre_mk_key6 (&ip6[0]->dst_address, + &ip6[0]->src_address, + vnet_buffer (b[0])->ip.fib_index, + type[0], TUNNEL_MODE_P2P, 0, &key[0].gtk_v6); + gre_mk_key6 (&ip6[1]->dst_address, + &ip6[1]->src_address, + vnet_buffer (b[1])->ip.fib_index, + type[1], TUNNEL_MODE_P2P, 0, &key[1].gtk_v6); + matched[0] = gre_match_key6 (&cached_key.gtk_v6, &key[0].gtk_v6); + matched[1] = gre_match_key6 (&cached_key.gtk_v6, &key[1].gtk_v6); + } + else + { + gre_mk_key4 (ip4[0]->dst_address, + ip4[0]->src_address, + vnet_buffer (b[0])->ip.fib_index, + type[0], TUNNEL_MODE_P2P, 0, &key[0].gtk_v4); + gre_mk_key4 (ip4[1]->dst_address, + ip4[1]->src_address, + vnet_buffer (b[1])->ip.fib_index, + type[1], TUNNEL_MODE_P2P, 0, &key[1].gtk_v4); + matched[0] = gre_match_key4 (&cached_key.gtk_v4, &key[0].gtk_v4); + matched[1] = gre_match_key4 (&cached_key.gtk_v4, &key[1].gtk_v4); + } - while (n_left_from > 0) + tun_sw_if_index[0] = cached_tun_sw_if_index; + tun_sw_if_index[1] = cached_tun_sw_if_index; + if (PREDICT_FALSE (!matched[0])) + gre_tunnel_get (gm, node, b[0], &next[0], &key[0], &cached_key, + &tun_sw_if_index[0], &cached_tun_sw_if_index, + is_ipv6); + if (PREDICT_FALSE (!matched[1])) + gre_tunnel_get (gm, node, b[1], &next[1], &key[1], &cached_key, + &tun_sw_if_index[1], &cached_tun_sw_if_index, + is_ipv6); + + if (PREDICT_TRUE (next[0] > GRE_INPUT_NEXT_DROP)) + { + vlib_increment_combined_counter (&gm->vnet_main-> + interface_main.combined_sw_if_counters + [VNET_INTERFACE_COUNTER_RX], + vm->thread_index, + tun_sw_if_index[0], + 1 /* packets */ , + len[0] /* bytes */ ); + vnet_buffer (b[0])->sw_if_index[VLIB_RX] = tun_sw_if_index[0]; + } + if (PREDICT_TRUE (next[1] > GRE_INPUT_NEXT_DROP)) + { + vlib_increment_combined_counter (&gm->vnet_main-> + interface_main.combined_sw_if_counters + [VNET_INTERFACE_COUNTER_RX], + vm->thread_index, + tun_sw_if_index[1], + 1 /* packets */ , + len[1] /* bytes */ ); + vnet_buffer (b[1])->sw_if_index[VLIB_RX] = tun_sw_if_index[1]; + } + + if (PREDICT_FALSE (b[0]->flags & VLIB_BUFFER_IS_TRACED)) + gre_trace (vm, node, b[0], tun_sw_if_index[0], ip6[0], ip4[0], + is_ipv6); + if (PREDICT_FALSE (b[1]->flags & VLIB_BUFFER_IS_TRACED)) + gre_trace (vm, node, b[1], tun_sw_if_index[1], ip6[1], ip4[1], + is_ipv6); + + b += 2; + next += 2; + n_left_from -= 2; + } + + while (n_left_from >= 1) { - u32 n_left_to_next; + const ip6_header_t *ip6[1]; + const ip4_header_t *ip4[1]; + const gre_header_t *gre[1]; + u32 nidx[1]; + next_info_t ni[1]; + u8 type[1]; + u16 version[1]; + u32 len[1]; + gre_tunnel_key_t key[1]; + u8 matched[1]; + u32 tun_sw_if_index[1]; + + if (PREDICT_TRUE (n_left_from >= 3)) + { + vlib_prefetch_buffer_data (b[1], LOAD); + vlib_prefetch_buffer_header (b[2], STORE); + } - vlib_get_next_frame (vm, node, next_index, - to_next, n_left_to_next); + if (is_ipv6) + { + /* ip6_local hands us the ip header, not the gre header */ + ip6[0] = vlib_buffer_get_current (b[0]); + gre[0] = (void *) (ip6[0] + 1); + vlib_buffer_advance (b[0], sizeof (*ip6[0]) + sizeof (*gre[0])); + } + else + { + /* ip4_local hands us the ip header, not the gre header */ + ip4[0] = vlib_buffer_get_current (b[0]); + gre[0] = (void *) (ip4[0] + 1); + vlib_buffer_advance (b[0], sizeof (*ip4[0]) + sizeof (*gre[0])); + } - while (n_left_from >= 4 && n_left_to_next >= 2) + if (PREDICT_TRUE (cached_protocol == gre[0]->protocol)) { - u32 bi0, bi1; - vlib_buffer_t * b0, * b1; - gre_header_t * h0, * h1; - u16 version0, version1; - int verr0, verr1; - u32 i0, i1, next0, next1, protocol0, protocol1; - ip4_header_t *ip0, *ip1; - - /* 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, sizeof (h0[0]), LOAD); - CLIB_PREFETCH (p3->data, sizeof (h1[0]), 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); - - /* ip4_local hands us the ip header, not the gre header */ - ip0 = vlib_buffer_get_current (b0); - ip1 = vlib_buffer_get_current (b1); - - /* Save src + dst ip4 address, e.g. for mpls-o-gre */ - vnet_buffer(b0)->gre.src = ip0->src_address.as_u32; - vnet_buffer(b0)->gre.dst = ip0->dst_address.as_u32; - vnet_buffer(b1)->gre.src = ip1->src_address.as_u32; - vnet_buffer(b1)->gre.dst = ip1->dst_address.as_u32; - - vlib_buffer_advance (b0, sizeof (*ip0)); - vlib_buffer_advance (b1, sizeof (*ip1)); - - h0 = vlib_buffer_get_current (b0); - h1 = vlib_buffer_get_current (b1); - - /* Index sparse array with network byte order. */ - protocol0 = h0->protocol; - protocol1 = h1->protocol; - sparse_vec_index2 (rt->next_by_protocol, protocol0, protocol1, - &i0, &i1); - next0 = vec_elt(rt->next_by_protocol, i0); - next1 = vec_elt(rt->next_by_protocol, i1); - - b0->error = node->errors[i0 == SPARSE_VEC_INVALID_INDEX ? GRE_ERROR_UNKNOWN_PROTOCOL : GRE_ERROR_NONE]; - b1->error = node->errors[i1 == SPARSE_VEC_INVALID_INDEX ? GRE_ERROR_UNKNOWN_PROTOCOL : GRE_ERROR_NONE]; - - version0 = clib_net_to_host_u16 (h0->flags_and_version); - verr0 = version0 & GRE_VERSION_MASK; - version1 = clib_net_to_host_u16 (h1->flags_and_version); - verr1 = version1 & GRE_VERSION_MASK; - - b0->error = verr0 ? node->errors[GRE_ERROR_UNSUPPORTED_VERSION] - : b0->error; - next0 = verr0 ? GRE_INPUT_NEXT_DROP : next0; - b1->error = verr1 ? node->errors[GRE_ERROR_UNSUPPORTED_VERSION] - : b1->error; - next1 = verr1 ? GRE_INPUT_NEXT_DROP : next1; - - - /* RPF check for ip4/ip6 input */ - if (PREDICT_TRUE(next0 == GRE_INPUT_NEXT_IP4_INPUT - || next0 == GRE_INPUT_NEXT_IP6_INPUT - || next0 == GRE_INPUT_NEXT_ETHERNET_INPUT - || next0 == GRE_INPUT_NEXT_MPLS_INPUT)) - { - u64 key = ((u64)(vnet_buffer(b0)->gre.dst) << 32) | - (u64)(vnet_buffer(b0)->gre.src); - - if (cached_tunnel_key != key) - { - vnet_hw_interface_t * hi; - gre_tunnel_t * t; - uword * p; - - p = hash_get (gm->tunnel_by_key, key); - if (!p) - { - next0 = GRE_INPUT_NEXT_DROP; - b0->error = node->errors[GRE_ERROR_NO_SUCH_TUNNEL]; - goto drop0; - } - t = pool_elt_at_index (gm->tunnels, p[0]); - hi = vnet_get_hw_interface (gm->vnet_main, - t->hw_if_index); - tunnel_sw_if_index = hi->sw_if_index; - - cached_tunnel_sw_if_index = tunnel_sw_if_index; - } - else - { - tunnel_sw_if_index = cached_tunnel_sw_if_index; - } - } - else - { - next0 = GRE_INPUT_NEXT_DROP; - goto drop0; - } - len = vlib_buffer_length_in_chain (vm, b0); - vlib_increment_combined_counter (im->combined_sw_if_counters - + VNET_INTERFACE_COUNTER_RX, - cpu_index, - tunnel_sw_if_index, - 1 /* packets */, - len /* bytes */); - - vnet_buffer(b0)->sw_if_index[VLIB_RX] = tunnel_sw_if_index; - -drop0: - if (PREDICT_TRUE(next1 == GRE_INPUT_NEXT_IP4_INPUT - || next1 == GRE_INPUT_NEXT_IP6_INPUT - || next1 == GRE_INPUT_NEXT_ETHERNET_INPUT - || next1 == GRE_INPUT_NEXT_MPLS_INPUT)) - { - u64 key = ((u64)(vnet_buffer(b1)->gre.dst) << 32) | - (u64)(vnet_buffer(b1)->gre.src); - - if (cached_tunnel_key != key) - { - vnet_hw_interface_t * hi; - gre_tunnel_t * t; - uword * p; - - p = hash_get (gm->tunnel_by_key, key); - if (!p) - { - next1 = GRE_INPUT_NEXT_DROP; - b1->error = node->errors[GRE_ERROR_NO_SUCH_TUNNEL]; - goto drop1; - } - t = pool_elt_at_index (gm->tunnels, p[0]); - hi = vnet_get_hw_interface (gm->vnet_main, - t->hw_if_index); - tunnel_sw_if_index = hi->sw_if_index; - - cached_tunnel_sw_if_index = tunnel_sw_if_index; - } - else - { - tunnel_sw_if_index = cached_tunnel_sw_if_index; - } - } - else - { - next1 = GRE_INPUT_NEXT_DROP; - goto drop1; - } - len = vlib_buffer_length_in_chain (vm, b1); - vlib_increment_combined_counter (im->combined_sw_if_counters - + VNET_INTERFACE_COUNTER_RX, - cpu_index, - tunnel_sw_if_index, - 1 /* packets */, - len /* bytes */); - - vnet_buffer(b1)->sw_if_index[VLIB_RX] = tunnel_sw_if_index; - -drop1: - if (PREDICT_FALSE(b0->flags & VLIB_BUFFER_IS_TRACED)) - { - gre_rx_trace_t *tr = vlib_add_trace (vm, node, - b0, sizeof (*tr)); - tr->tunnel_id = tunnel_sw_if_index; - tr->length = ip0->length; - tr->src.as_u32 = ip0->src_address.as_u32; - tr->dst.as_u32 = ip0->dst_address.as_u32; - } - - if (PREDICT_FALSE(b1->flags & VLIB_BUFFER_IS_TRACED)) - { - gre_rx_trace_t *tr = vlib_add_trace (vm, node, - b1, sizeof (*tr)); - tr->tunnel_id = tunnel_sw_if_index; - tr->length = ip1->length; - tr->src.as_u32 = ip1->src_address.as_u32; - tr->dst.as_u32 = ip1->dst_address.as_u32; - } - - 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); + nidx[0] = cached_next_index; } - - while (n_left_from > 0 && n_left_to_next > 0) + else { - u32 bi0; - vlib_buffer_t * b0; - gre_header_t * h0; - ip4_header_t * ip0; - u16 version0; - int verr0; - u32 i0, next0; - - 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); - ip0 = vlib_buffer_get_current (b0); - - vnet_buffer(b0)->gre.src = ip0->src_address.as_u32; - vnet_buffer(b0)->gre.dst = ip0->dst_address.as_u32; - - vlib_buffer_advance (b0, sizeof (*ip0)); - - h0 = vlib_buffer_get_current (b0); - - i0 = sparse_vec_index (rt->next_by_protocol, h0->protocol); - next0 = vec_elt(rt->next_by_protocol, i0); - - b0->error = - node->errors[i0 == SPARSE_VEC_INVALID_INDEX - ? GRE_ERROR_UNKNOWN_PROTOCOL : GRE_ERROR_NONE]; - - version0 = clib_net_to_host_u16 (h0->flags_and_version); - verr0 = version0 & GRE_VERSION_MASK; - b0->error = verr0 ? node->errors[GRE_ERROR_UNSUPPORTED_VERSION] - : b0->error; - next0 = verr0 ? GRE_INPUT_NEXT_DROP : next0; - - - /* For IP payload we need to find source interface - so we can increase counters and help forward node to - pick right FIB */ - /* RPF check for ip4/ip6 input */ - if (PREDICT_TRUE(next0 == GRE_INPUT_NEXT_IP4_INPUT - || next0 == GRE_INPUT_NEXT_IP6_INPUT - || next0 == GRE_INPUT_NEXT_ETHERNET_INPUT - || next0 == GRE_INPUT_NEXT_MPLS_INPUT)) - { - u64 key = ((u64)(vnet_buffer(b0)->gre.dst) << 32) | - (u64)(vnet_buffer(b0)->gre.src); - - if (cached_tunnel_key != key) - { - vnet_hw_interface_t * hi; - gre_tunnel_t * t; - uword * p; - - p = hash_get (gm->tunnel_by_key, key); - if (!p) - { - next0 = GRE_INPUT_NEXT_DROP; - b0->error = node->errors[GRE_ERROR_NO_SUCH_TUNNEL]; - goto drop; - } - t = pool_elt_at_index (gm->tunnels, p[0]); - hi = vnet_get_hw_interface (gm->vnet_main, - t->hw_if_index); - tunnel_sw_if_index = hi->sw_if_index; - - cached_tunnel_sw_if_index = tunnel_sw_if_index; - } - else - { - tunnel_sw_if_index = cached_tunnel_sw_if_index; - } - } - else - { - next0 = GRE_INPUT_NEXT_DROP; - goto drop; - } - len = vlib_buffer_length_in_chain (vm, b0); - vlib_increment_combined_counter (im->combined_sw_if_counters - + VNET_INTERFACE_COUNTER_RX, - cpu_index, - tunnel_sw_if_index, - 1 /* packets */, - len /* bytes */); - - vnet_buffer(b0)->sw_if_index[VLIB_RX] = tunnel_sw_if_index; - -drop: - if (PREDICT_FALSE(b0->flags & VLIB_BUFFER_IS_TRACED)) - { - gre_rx_trace_t *tr = vlib_add_trace (vm, node, - b0, sizeof (*tr)); - tr->tunnel_id = tunnel_sw_if_index; - tr->length = ip0->length; - tr->src.as_u32 = ip0->src_address.as_u32; - tr->dst.as_u32 = ip0->dst_address.as_u32; - } - - vlib_buffer_advance (b0, sizeof (*h0)); - - vlib_validate_buffer_enqueue_x1 (vm, node, next_index, - to_next, n_left_to_next, - bi0, next0); + cached_next_index = nidx[0] = + sparse_vec_index (gm->next_by_protocol, gre[0]->protocol); + cached_protocol = gre[0]->protocol; } - vlib_put_next_frame (vm, node, next_index, n_left_to_next); + ni[0] = vec_elt (gm->next_by_protocol, nidx[0]); + next[0] = ni[0].next_index; + type[0] = ni[0].tunnel_type; + + b[0]->error = nidx[0] == SPARSE_VEC_INVALID_INDEX + ? node->errors[GRE_ERROR_UNKNOWN_PROTOCOL] + : node->errors[GRE_ERROR_NONE]; + + version[0] = clib_net_to_host_u16 (gre[0]->flags_and_version); + version[0] &= GRE_VERSION_MASK; + + b[0]->error = version[0] + ? node->errors[GRE_ERROR_UNSUPPORTED_VERSION] : b[0]->error; + next[0] = version[0] ? GRE_INPUT_NEXT_DROP : next[0]; + + len[0] = vlib_buffer_length_in_chain (vm, b[0]); + + if (is_ipv6) + { + gre_mk_key6 (&ip6[0]->dst_address, + &ip6[0]->src_address, + vnet_buffer (b[0])->ip.fib_index, + type[0], TUNNEL_MODE_P2P, 0, &key[0].gtk_v6); + matched[0] = gre_match_key6 (&cached_key.gtk_v6, &key[0].gtk_v6); + } + else + { + gre_mk_key4 (ip4[0]->dst_address, + ip4[0]->src_address, + vnet_buffer (b[0])->ip.fib_index, + type[0], TUNNEL_MODE_P2P, 0, &key[0].gtk_v4); + matched[0] = gre_match_key4 (&cached_key.gtk_v4, &key[0].gtk_v4); + } + + tun_sw_if_index[0] = cached_tun_sw_if_index; + if (PREDICT_FALSE (!matched[0])) + gre_tunnel_get (gm, node, b[0], &next[0], &key[0], &cached_key, + &tun_sw_if_index[0], &cached_tun_sw_if_index, + is_ipv6); + + if (PREDICT_TRUE (next[0] > GRE_INPUT_NEXT_DROP)) + { + vlib_increment_combined_counter (&gm->vnet_main-> + interface_main.combined_sw_if_counters + [VNET_INTERFACE_COUNTER_RX], + vm->thread_index, + tun_sw_if_index[0], + 1 /* packets */ , + len[0] /* bytes */ ); + vnet_buffer (b[0])->sw_if_index[VLIB_RX] = tun_sw_if_index[0]; + } + + if (PREDICT_FALSE (b[0]->flags & VLIB_BUFFER_IS_TRACED)) + gre_trace (vm, node, b[0], tun_sw_if_index[0], ip6[0], ip4[0], + is_ipv6); + + b += 1; + next += 1; + n_left_from -= 1; } - vlib_node_increment_counter (vm, gre_input_node.index, - GRE_ERROR_PKTS_DECAP, from_frame->n_vectors); - return from_frame->n_vectors; + + vlib_buffer_enqueue_to_next (vm, node, from, nexts, frame->n_vectors); + + vlib_node_increment_counter (vm, + is_ipv6 ? gre6_input_node.index : + gre4_input_node.index, GRE_ERROR_PKTS_DECAP, + n_left_from); + + return frame->n_vectors; +} + +VLIB_NODE_FN (gre4_input_node) (vlib_main_t * vm, + vlib_node_runtime_t * node, + vlib_frame_t * from_frame) +{ + return gre_input (vm, node, from_frame, /* is_ip6 */ 0); +} + +VLIB_NODE_FN (gre6_input_node) (vlib_main_t * vm, + vlib_node_runtime_t * node, + vlib_frame_t * from_frame) +{ + return gre_input (vm, node, from_frame, /* is_ip6 */ 1); } -static char * gre_error_strings[] = { +static char *gre_error_strings[] = { #define gre_error(n,s) s, #include "error.def" #undef gre_error }; -VLIB_REGISTER_NODE (gre_input_node) = { - .function = gre_input, - .name = "gre-input", +/* *INDENT-OFF* */ +VLIB_REGISTER_NODE (gre4_input_node) = { + .name = "gre4-input", + /* Takes a vector of packets. */ + .vector_size = sizeof (u32), + + .n_errors = GRE_N_ERROR, + .error_strings = gre_error_strings, + + .n_next_nodes = GRE_INPUT_N_NEXT, + .next_nodes = { +#define _(s,n) [GRE_INPUT_NEXT_##s] = n, + foreach_gre_input_next +#undef _ + }, + + .format_buffer = format_gre_header_with_length, + .format_trace = format_gre_rx_trace, + .unformat_buffer = unformat_gre_header, +}; + +VLIB_REGISTER_NODE (gre6_input_node) = { + .name = "gre6-input", /* Takes a vector of packets. */ .vector_size = sizeof (u32), @@ -438,94 +492,102 @@ VLIB_REGISTER_NODE (gre_input_node) = { .format_trace = format_gre_rx_trace, .unformat_buffer = unformat_gre_header, }; +/* *INDENT-ON* */ -VLIB_NODE_FUNCTION_MULTIARCH (gre_input_node, gre_input) - +#ifndef CLIB_MARCH_VARIANT void gre_register_input_protocol (vlib_main_t * vm, - gre_protocol_t protocol, - u32 node_index) + gre_protocol_t protocol, u32 node_index, + gre_tunnel_type_t tunnel_type) { - gre_main_t * em = &gre_main; - gre_protocol_info_t * pi; - gre_input_runtime_t * rt; - u16 * n; + gre_main_t *em = &gre_main; + gre_protocol_info_t *pi; + next_info_t *n; + u32 i; { - clib_error_t * error = vlib_call_init_function (vm, gre_input_init); + clib_error_t *error = vlib_call_init_function (vm, gre_input_init); if (error) clib_error_report (error); } pi = gre_get_protocol_info (em, protocol); pi->node_index = node_index; - pi->next_index = vlib_node_add_next (vm, - gre_input_node.index, - node_index); + pi->tunnel_type = tunnel_type; + pi->next_index = vlib_node_add_next (vm, gre4_input_node.index, node_index); + i = vlib_node_add_next (vm, gre6_input_node.index, node_index); + ASSERT (i == pi->next_index); /* Setup gre protocol -> next index sparse vector mapping. */ - rt = vlib_node_get_runtime_data (vm, gre_input_node.index); - n = sparse_vec_validate (rt->next_by_protocol, - clib_host_to_net_u16 (protocol)); - n[0] = pi->next_index; + n = sparse_vec_validate (em->next_by_protocol, + clib_host_to_net_u16 (protocol)); + n->next_index = pi->next_index; + n->tunnel_type = tunnel_type; } static void gre_setup_node (vlib_main_t * vm, u32 node_index) { - vlib_node_t * n = vlib_get_node (vm, node_index); - pg_node_t * pn = pg_get_node (node_index); + vlib_node_t *n = vlib_get_node (vm, node_index); + pg_node_t *pn = pg_get_node (node_index); n->format_buffer = format_gre_header_with_length; n->unformat_buffer = unformat_gre_header; pn->unformat_edit = unformat_pg_gre_header; } -static clib_error_t * gre_input_init (vlib_main_t * vm) +static clib_error_t * +gre_input_init (vlib_main_t * vm) { - gre_input_runtime_t * rt; + gre_main_t *gm = &gre_main; vlib_node_t *ethernet_input, *ip4_input, *ip6_input, *mpls_unicast_input; { - clib_error_t * error; + clib_error_t *error; error = vlib_call_init_function (vm, gre_init); if (error) clib_error_report (error); } - gre_setup_node (vm, gre_input_node.index); + gre_setup_node (vm, gre4_input_node.index); + gre_setup_node (vm, gre6_input_node.index); - rt = vlib_node_get_runtime_data (vm, gre_input_node.index); - - rt->next_by_protocol = sparse_vec_new - (/* elt bytes */ sizeof (rt->next_by_protocol[0]), + gm->next_by_protocol = sparse_vec_new + ( /* elt bytes */ sizeof (gm->next_by_protocol[0]), /* bits in index */ BITS (((gre_header_t *) 0)->protocol)); /* These could be moved to the supported protocol input node defn's */ - ethernet_input = vlib_get_node_by_name (vm, (u8 *)"ethernet-input"); - ASSERT(ethernet_input); - ip4_input = vlib_get_node_by_name (vm, (u8 *)"ip4-input"); - ASSERT(ip4_input); - ip6_input = vlib_get_node_by_name (vm, (u8 *)"ip6-input"); - ASSERT(ip6_input); - mpls_unicast_input = vlib_get_node_by_name (vm, (u8 *)"mpls-input"); - ASSERT(mpls_unicast_input); + ethernet_input = vlib_get_node_by_name (vm, (u8 *) "ethernet-input"); + ASSERT (ethernet_input); + ip4_input = vlib_get_node_by_name (vm, (u8 *) "ip4-input"); + ASSERT (ip4_input); + ip6_input = vlib_get_node_by_name (vm, (u8 *) "ip6-input"); + ASSERT (ip6_input); + mpls_unicast_input = vlib_get_node_by_name (vm, (u8 *) "mpls-input"); + ASSERT (mpls_unicast_input); gre_register_input_protocol (vm, GRE_PROTOCOL_teb, - ethernet_input->index); + ethernet_input->index, GRE_TUNNEL_TYPE_TEB); - gre_register_input_protocol (vm, GRE_PROTOCOL_ip4, - ip4_input->index); + gre_register_input_protocol (vm, GRE_PROTOCOL_ip4, + ip4_input->index, GRE_TUNNEL_TYPE_L3); - gre_register_input_protocol (vm, GRE_PROTOCOL_ip6, - ip6_input->index); + gre_register_input_protocol (vm, GRE_PROTOCOL_ip6, + ip6_input->index, GRE_TUNNEL_TYPE_L3); gre_register_input_protocol (vm, GRE_PROTOCOL_mpls_unicast, - mpls_unicast_input->index); - - ip4_register_protocol (IP_PROTOCOL_GRE, gre_input_node.index); + mpls_unicast_input->index, GRE_TUNNEL_TYPE_L3); return 0; } VLIB_INIT_FUNCTION (gre_input_init); + +#endif /* CLIB_MARCH_VARIANT */ +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */