diff options
Diffstat (limited to 'src/vnet/gre')
| -rw-r--r-- | src/vnet/gre/gre.c | 286 | ||||
| -rw-r--r-- | src/vnet/gre/node.c | 802 |
2 files changed, 470 insertions, 618 deletions
diff --git a/src/vnet/gre/gre.c b/src/vnet/gre/gre.c index 028eefbee8b..72c76fca5df 100644 --- a/src/vnet/gre/gre.c +++ b/src/vnet/gre/gre.c @@ -19,6 +19,8 @@ #include <vnet/gre/gre.h> #include <vnet/adj/adj_midchain.h> +extern gre_main_t gre_main; + #ifndef CLIB_MARCH_VARIANT gre_main_t gre_main; @@ -56,7 +58,10 @@ typedef struct ip46_address_t dst; } gre_tx_trace_t; -static u8 * +extern u8 *format_gre_tx_trace (u8 * s, va_list * args); + +#ifndef CLIB_MARCH_VARIANT +u8 * format_gre_tx_trace (u8 * s, va_list * args) { CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *); @@ -70,7 +75,6 @@ format_gre_tx_trace (u8 * s, va_list * args) return s; } -#ifndef CLIB_MARCH_VARIANT u8 * format_gre_protocol (u8 * s, va_list * args) { @@ -324,7 +328,6 @@ gre_update_adj (vnet_main_t * vnm, u32 sw_if_index, adj_index_t ai) } #endif /* CLIB_MARCH_VARIANT */ - typedef enum { GRE_ENCAP_NEXT_L2_MIDCHAIN, @@ -335,173 +338,145 @@ typedef enum * @brief TX function. Only called for L2 payload including TEB or ERSPAN. * L3 traffic uses the adj-midchains. */ -VLIB_NODE_FN (gre_encap_node) (vlib_main_t * vm, - vlib_node_runtime_t * node, +VLIB_NODE_FN (gre_encap_node) (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * frame) { gre_main_t *gm = &gre_main; - vnet_main_t *vnm = gm->vnet_main; - u32 next_index; - u32 *from, *to_next, n_left_from, n_left_to_next; - u32 sw_if_index0 = ~0; - u32 sw_if_index1 = ~0; - adj_index_t adj_index0 = ADJ_INDEX_INVALID; - adj_index_t adj_index1 = ADJ_INDEX_INVALID; - gre_tunnel_t *gt0 = NULL; - gre_tunnel_t *gt1 = NULL; - - /* Vector of buffer / pkt indices we're supposed to process */ - from = vlib_frame_vector_args (frame); + u32 *from, n_left_from; + vlib_buffer_t *bufs[VLIB_FRAME_SIZE], **b = bufs; + u32 sw_if_index[2] = { ~0, ~0 }; + const gre_tunnel_t *gt[2] = { 0 }; + adj_index_t adj_index[2] = { ADJ_INDEX_INVALID, ADJ_INDEX_INVALID }; - /* Number of buffers / pkts */ + from = vlib_frame_vector_args (frame); n_left_from = frame->n_vectors; + vlib_get_buffers (vm, from, bufs, n_left_from); + + while (n_left_from >= 2) + { + + if (PREDICT_FALSE + (sw_if_index[0] != vnet_buffer (b[0])->sw_if_index[VLIB_TX])) + { + const vnet_hw_interface_t *hi; + sw_if_index[0] = vnet_buffer (b[0])->sw_if_index[VLIB_TX]; + hi = vnet_get_sup_hw_interface (gm->vnet_main, sw_if_index[0]); + gt[0] = &gm->tunnels[hi->dev_instance]; + adj_index[0] = gt[0]->l2_adj_index; + } + if (PREDICT_FALSE + (sw_if_index[1] != vnet_buffer (b[1])->sw_if_index[VLIB_TX])) + { + const vnet_hw_interface_t *hi; + sw_if_index[1] = vnet_buffer (b[1])->sw_if_index[VLIB_TX]; + hi = vnet_get_sup_hw_interface (gm->vnet_main, sw_if_index[1]); + gt[1] = &gm->tunnels[hi->dev_instance]; + adj_index[1] = gt[1]->l2_adj_index; + } + + vnet_buffer (b[0])->ip.adj_index[VLIB_TX] = adj_index[0]; + vnet_buffer (b[1])->ip.adj_index[VLIB_TX] = adj_index[1]; + + if (PREDICT_FALSE (gt[0]->type == GRE_TUNNEL_TYPE_ERSPAN)) + { + /* Encap GRE seq# and ERSPAN type II header */ + erspan_t2_t *h0; + u32 seq_num; + u64 hdr; + vlib_buffer_advance (b[0], -sizeof (erspan_t2_t)); + h0 = vlib_buffer_get_current (b[0]); + seq_num = clib_atomic_fetch_add (>[0]->gre_sn->seq_num, 1); + hdr = clib_host_to_net_u64 (ERSPAN_HDR2); + h0->seq_num = clib_host_to_net_u32 (seq_num); + h0->t2_u64 = hdr; + h0->t2.cos_en_t_session |= clib_host_to_net_u16 (gt[0]->session_id); + } + if (PREDICT_FALSE (gt[1]->type == GRE_TUNNEL_TYPE_ERSPAN)) + { + /* Encap GRE seq# and ERSPAN type II header */ + erspan_t2_t *h0; + u32 seq_num; + u64 hdr; + vlib_buffer_advance (b[1], -sizeof (erspan_t2_t)); + h0 = vlib_buffer_get_current (b[1]); + seq_num = clib_atomic_fetch_add (>[1]->gre_sn->seq_num, 1); + hdr = clib_host_to_net_u64 (ERSPAN_HDR2); + h0->seq_num = clib_host_to_net_u32 (seq_num); + h0->t2_u64 = hdr; + h0->t2.cos_en_t_session |= clib_host_to_net_u16 (gt[1]->session_id); + } + + if (PREDICT_FALSE (b[0]->flags & VLIB_BUFFER_IS_TRACED)) + { + gre_tx_trace_t *tr = vlib_add_trace (vm, node, + b[0], sizeof (*tr)); + tr->tunnel_id = gt[0] - gm->tunnels; + tr->src = gt[0]->tunnel_src; + tr->dst = gt[0]->tunnel_dst.fp_addr; + tr->length = vlib_buffer_length_in_chain (vm, b[0]); + } + if (PREDICT_FALSE (b[1]->flags & VLIB_BUFFER_IS_TRACED)) + { + gre_tx_trace_t *tr = vlib_add_trace (vm, node, + b[1], sizeof (*tr)); + tr->tunnel_id = gt[1] - gm->tunnels; + tr->src = gt[1]->tunnel_src; + tr->dst = gt[1]->tunnel_dst.fp_addr; + tr->length = vlib_buffer_length_in_chain (vm, b[1]); + } - /* Speculatively send the first buffer to the last disposition we used */ - next_index = GRE_ENCAP_NEXT_L2_MIDCHAIN; + b += 2; + n_left_from -= 2; + } - while (n_left_from > 0) + while (n_left_from >= 1) { - /* set up to enqueue to our disposition with index = next_index */ - vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next); - while (n_left_from >= 4 && n_left_to_next >= 2) + if (PREDICT_FALSE + (sw_if_index[0] != vnet_buffer (b[0])->sw_if_index[VLIB_TX])) { - u32 bi0 = from[0]; - u32 bi1 = from[1]; - vlib_buffer_t *b0 = vlib_get_buffer (vm, bi0); - vlib_buffer_t *b1 = vlib_get_buffer (vm, bi1); - - to_next[0] = bi0; - to_next[1] = bi1; - from += 2; - to_next += 2; - n_left_to_next -= 2; - n_left_from -= 2; - - if (sw_if_index0 != vnet_buffer (b0)->sw_if_index[VLIB_TX]) - { - sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_TX]; - vnet_hw_interface_t *hi0 = - vnet_get_sup_hw_interface (vnm, sw_if_index0); - gt0 = &gm->tunnels[hi0->dev_instance]; - adj_index0 = gt0->l2_adj_index; - } - - if (sw_if_index1 != vnet_buffer (b1)->sw_if_index[VLIB_TX]) - { - if (sw_if_index0 == vnet_buffer (b1)->sw_if_index[VLIB_TX]) - { - sw_if_index1 = sw_if_index0; - gt1 = gt0; - adj_index1 = adj_index0; - } - else - { - sw_if_index1 = vnet_buffer (b1)->sw_if_index[VLIB_TX]; - vnet_hw_interface_t *hi1 = - vnet_get_sup_hw_interface (vnm, sw_if_index1); - gt1 = &gm->tunnels[hi1->dev_instance]; - adj_index1 = gt1->l2_adj_index; - } - } - - vnet_buffer (b0)->ip.adj_index[VLIB_TX] = adj_index0; - vnet_buffer (b1)->ip.adj_index[VLIB_TX] = adj_index1; - - if (PREDICT_FALSE (gt0->type == GRE_TUNNEL_TYPE_ERSPAN)) - { - /* Encap GRE seq# and ERSPAN type II header */ - vlib_buffer_advance (b0, -sizeof (erspan_t2_t)); - erspan_t2_t *h0 = vlib_buffer_get_current (b0); - u32 seq_num = clib_atomic_fetch_add (>0->gre_sn->seq_num, 1); - u64 hdr = clib_host_to_net_u64 (ERSPAN_HDR2); - h0->seq_num = clib_host_to_net_u32 (seq_num); - h0->t2_u64 = hdr; - h0->t2.cos_en_t_session |= - clib_host_to_net_u16 (gt0->session_id); - } - if (PREDICT_FALSE (gt1->type == GRE_TUNNEL_TYPE_ERSPAN)) - { - /* Encap GRE seq# and ERSPAN type II header */ - vlib_buffer_advance (b1, -sizeof (erspan_t2_t)); - erspan_t2_t *h1 = vlib_buffer_get_current (b1); - u32 seq_num = clib_atomic_fetch_add (>1->gre_sn->seq_num, 1); - u64 hdr = clib_host_to_net_u64 (ERSPAN_HDR2); - h1->seq_num = clib_host_to_net_u32 (seq_num); - h1->t2_u64 = hdr; - h1->t2.cos_en_t_session |= - clib_host_to_net_u16 (gt1->session_id); - } - - if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED)) - { - gre_tx_trace_t *tr0 = vlib_add_trace (vm, node, - b0, sizeof (*tr0)); - tr0->tunnel_id = gt0 - gm->tunnels; - tr0->src = gt0->tunnel_src; - tr0->dst = gt0->tunnel_dst.fp_addr; - tr0->length = vlib_buffer_length_in_chain (vm, b0); - } - if (PREDICT_FALSE (b1->flags & VLIB_BUFFER_IS_TRACED)) - { - gre_tx_trace_t *tr1 = vlib_add_trace (vm, node, - b1, sizeof (*tr1)); - tr1->tunnel_id = gt1 - gm->tunnels; - tr1->src = gt1->tunnel_src; - tr1->dst = gt1->tunnel_dst.fp_addr; - tr1->length = vlib_buffer_length_in_chain (vm, b1); - } + const vnet_hw_interface_t *hi; + sw_if_index[0] = vnet_buffer (b[0])->sw_if_index[VLIB_TX]; + hi = vnet_get_sup_hw_interface (gm->vnet_main, sw_if_index[0]); + gt[0] = &gm->tunnels[hi->dev_instance]; + adj_index[0] = gt[0]->l2_adj_index; } - while (n_left_from > 0 && n_left_to_next > 0) + vnet_buffer (b[0])->ip.adj_index[VLIB_TX] = adj_index[0]; + + if (PREDICT_FALSE (gt[0]->type == GRE_TUNNEL_TYPE_ERSPAN)) { - u32 bi0 = from[0]; - vlib_buffer_t *b0 = vlib_get_buffer (vm, bi0); - - to_next[0] = bi0; - from += 1; - to_next += 1; - n_left_from -= 1; - n_left_to_next -= 1; - - if (sw_if_index0 != vnet_buffer (b0)->sw_if_index[VLIB_TX]) - { - sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_TX]; - vnet_hw_interface_t *hi0 = - vnet_get_sup_hw_interface (vnm, sw_if_index0); - gt0 = &gm->tunnels[hi0->dev_instance]; - adj_index0 = gt0->l2_adj_index; - } - - vnet_buffer (b0)->ip.adj_index[VLIB_TX] = adj_index0; - - if (PREDICT_FALSE (gt0->type == GRE_TUNNEL_TYPE_ERSPAN)) - { - /* Encap GRE seq# and ERSPAN type II header */ - vlib_buffer_advance (b0, -sizeof (erspan_t2_t)); - erspan_t2_t *h0 = vlib_buffer_get_current (b0); - u32 seq_num = clib_atomic_fetch_add (>0->gre_sn->seq_num, 1); - u64 hdr = clib_host_to_net_u64 (ERSPAN_HDR2); - h0->seq_num = clib_host_to_net_u32 (seq_num); - h0->t2_u64 = hdr; - h0->t2.cos_en_t_session |= - clib_host_to_net_u16 (gt0->session_id); - } - - if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED)) - { - gre_tx_trace_t *tr = vlib_add_trace (vm, node, - b0, sizeof (*tr)); - tr->tunnel_id = gt0 - gm->tunnels; - tr->src = gt0->tunnel_src; - tr->dst = gt0->tunnel_dst.fp_addr; - tr->length = vlib_buffer_length_in_chain (vm, b0); - } + /* Encap GRE seq# and ERSPAN type II header */ + erspan_t2_t *h0; + u32 seq_num; + u64 hdr; + vlib_buffer_advance (b[0], -sizeof (erspan_t2_t)); + h0 = vlib_buffer_get_current (b[0]); + seq_num = clib_atomic_fetch_add (>[0]->gre_sn->seq_num, 1); + hdr = clib_host_to_net_u64 (ERSPAN_HDR2); + h0->seq_num = clib_host_to_net_u32 (seq_num); + h0->t2_u64 = hdr; + h0->t2.cos_en_t_session |= clib_host_to_net_u16 (gt[0]->session_id); } - vlib_put_next_frame (vm, node, next_index, n_left_to_next); + if (PREDICT_FALSE (b[0]->flags & VLIB_BUFFER_IS_TRACED)) + { + gre_tx_trace_t *tr = vlib_add_trace (vm, node, + b[0], sizeof (*tr)); + tr->tunnel_id = gt[0] - gm->tunnels; + tr->src = gt[0]->tunnel_src; + tr->dst = gt[0]->tunnel_dst.fp_addr; + tr->length = vlib_buffer_length_in_chain (vm, b[0]); + } + + b += 1; + n_left_from -= 1; } + vlib_buffer_enqueue_to_single_next (vm, node, from, + GRE_ENCAP_NEXT_L2_MIDCHAIN, + frame->n_vectors); + vlib_node_increment_counter (vm, node->node_index, GRE_ERROR_PKTS_ENCAP, frame->n_vectors); @@ -530,6 +505,7 @@ VLIB_REGISTER_NODE (gre_encap_node) = }; /* *INDENT-ON* */ +#ifndef CLIB_MARCH_VARIANT static u8 * format_gre_tunnel_name (u8 * s, va_list * args) { @@ -566,7 +542,6 @@ VNET_DEVICE_CLASS (gre_device_class) = { #endif }; -#ifndef CLIB_MARCH_VARIANT VNET_HW_INTERFACE_CLASS (gre_hw_interface_class) = { .name = "GRE", .format_header = format_gre_header_with_length, @@ -576,6 +551,7 @@ VNET_HW_INTERFACE_CLASS (gre_hw_interface_class) = { .flags = VNET_HW_INTERFACE_CLASS_FLAG_P2P, }; /* *INDENT-ON* */ +#endif /* CLIB_MARCH_VARIANT */ static void add_protocol (gre_main_t * gm, gre_protocol_t protocol, char *protocol_name) @@ -637,8 +613,6 @@ gre_init (vlib_main_t * vm) VLIB_INIT_FUNCTION (gre_init); -#endif /* CLIB_MARCH_VARIANT */ - /* * fd.io coding-style-patch-verification: ON * diff --git a/src/vnet/gre/node.c b/src/vnet/gre/node.c index ad3c8c6e10d..ff74d1b4e79 100644 --- a/src/vnet/gre/node.c +++ b/src/vnet/gre/node.c @@ -43,10 +43,12 @@ typedef struct u32 length; ip46_address_t src; ip46_address_t dst; - u8 is_ipv6; } gre_rx_trace_t; -static u8 * +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 *); @@ -59,6 +61,7 @@ format_gre_rx_trace (u8 * s, va_list * args) format_ip46_address, &t->dst, IP46_TYPE_ANY); return s; } +#endif /* CLIB_MARCH_VARIANT */ typedef struct { @@ -67,488 +70,363 @@ typedef struct u16 *next_by_protocol; } gre_input_runtime_t; +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, u8 is_ipv6) + vlib_node_runtime_t * node, vlib_frame_t * frame, + const int is_ipv6) { gre_main_t *gm = &gre_main; - __attribute__ ((unused)) u32 n_left_from, next_index, *from, *to_next; - gre_tunnel_key_t cached_tunnel_key; + 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)); - u32 cached_tunnel_sw_if_index = ~0, tunnel_sw_if_index = ~0; + 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 thread_index = vm->thread_index; - 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])); + } - if (!is_ipv6) - clib_memset (&cached_tunnel_key.gtk_v4, 0xff, - sizeof (cached_tunnel_key.gtk_v4)); - else - clib_memset (&cached_tunnel_key.gtk_v6, 0xff, - sizeof (cached_tunnel_key.gtk_v6)); + 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; + } + + 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]); + + if (is_ipv6) + { + gre_mk_key6 (&ip6[0]->dst_address, + &ip6[0]->src_address, + vnet_buffer (b[0])->ip.fib_index, + type[0], 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], 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], 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], 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); + } - from = vlib_frame_vector_args (from_frame); - n_left_from = from_frame->n_vectors; + 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]; + } - next_index = node->cached_next_index; + 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); - while (n_left_from > 0) + 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 *ip4_0, *ip4_1; - ip6_header_t *ip6_0, *ip6_1; - gre_tunnel_key_t key0, key1; - - /* 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); - - if (!is_ipv6) - { - /* ip4_local hands us the ip header, not the gre header */ - ip4_0 = vlib_buffer_get_current (b0); - ip4_1 = vlib_buffer_get_current (b1); - - vlib_buffer_advance (b0, sizeof (*ip4_0)); - vlib_buffer_advance (b1, sizeof (*ip4_1)); - } - else - { - /* ip6_local hands us the ip header, not the gre header */ - ip6_0 = vlib_buffer_get_current (b0); - ip6_1 = vlib_buffer_get_current (b1); - - vlib_buffer_advance (b0, sizeof (*ip6_0)); - vlib_buffer_advance (b1, sizeof (*ip6_1)); - } - - 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 (gm->next_by_protocol, protocol0, protocol1, - &i0, &i1); - next0 = vec_elt (gm->next_by_protocol, i0).next_index; - next1 = vec_elt (gm->next_by_protocol, i1).next_index; - u8 ttype0 = vec_elt (gm->next_by_protocol, i0).tunnel_type; - u8 ttype1 = vec_elt (gm->next_by_protocol, i1).tunnel_type; - - 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_DROP)) - { - if (is_ipv6) - { - gre_mk_key6 (&ip6_0->dst_address, - &ip6_0->src_address, - vnet_buffer (b0)->ip.fib_index, - ttype0, 0, &key0.gtk_v6); - } - else - { - gre_mk_key4 (ip4_0->dst_address, - ip4_0->src_address, - vnet_buffer (b0)->ip.fib_index, - ttype0, 0, &key0.gtk_v4); - } - - if ((!is_ipv6 && !gre_match_key4 (&cached_tunnel_key.gtk_v4, - &key0.gtk_v4)) || - (is_ipv6 && !gre_match_key6 (&cached_tunnel_key.gtk_v6, - &key0.gtk_v6))) - { - gre_tunnel_t *t; - uword *p; - - if (!is_ipv6) - { - p = hash_get_mem (gm->tunnel_by_key4, &key0.gtk_v4); - } - else - { - p = hash_get_mem (gm->tunnel_by_key6, &key0.gtk_v6); - } - 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]); - tunnel_sw_if_index = t->sw_if_index; - - cached_tunnel_sw_if_index = tunnel_sw_if_index; - if (!is_ipv6) - { - cached_tunnel_key.gtk_v4 = key0.gtk_v4; - } - else - { - cached_tunnel_key.gtk_v6 = key0.gtk_v6; - } - } - 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, - thread_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_DROP)) - { - if (is_ipv6) - { - gre_mk_key6 (&ip6_1->dst_address, - &ip6_1->src_address, - vnet_buffer (b1)->ip.fib_index, - ttype1, 0, &key1.gtk_v6); - } - else - { - gre_mk_key4 (ip4_1->dst_address, - ip4_1->src_address, - vnet_buffer (b1)->ip.fib_index, - ttype1, 0, &key1.gtk_v4); - } - - if ((!is_ipv6 && !gre_match_key4 (&cached_tunnel_key.gtk_v4, - &key1.gtk_v4)) || - (is_ipv6 && !gre_match_key6 (&cached_tunnel_key.gtk_v6, - &key1.gtk_v6))) - { - gre_tunnel_t *t; - uword *p; - - if (!is_ipv6) - { - p = hash_get_mem (gm->tunnel_by_key4, &key1.gtk_v4); - } - else - { - p = hash_get_mem (gm->tunnel_by_key6, &key1.gtk_v6); - } - 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]); - tunnel_sw_if_index = t->sw_if_index; - - cached_tunnel_sw_if_index = tunnel_sw_if_index; - if (!is_ipv6) - { - cached_tunnel_key.gtk_v4 = key1.gtk_v4; - } - else - { - cached_tunnel_key.gtk_v6 = key1.gtk_v6; - } - } - 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, - thread_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; - if (!is_ipv6) - { - tr->length = ip4_0->length; - tr->src.ip4.as_u32 = ip4_0->src_address.as_u32; - tr->dst.ip4.as_u32 = ip4_0->dst_address.as_u32; - } - else - { - tr->length = ip6_0->payload_length; - tr->src.ip6.as_u64[0] = ip6_0->src_address.as_u64[0]; - tr->src.ip6.as_u64[1] = ip6_0->src_address.as_u64[1]; - tr->dst.ip6.as_u64[0] = ip6_0->dst_address.as_u64[0]; - tr->dst.ip6.as_u64[1] = ip6_0->dst_address.as_u64[1]; - } - } - - 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; - if (!is_ipv6) - { - tr->length = ip4_1->length; - tr->src.ip4.as_u32 = ip4_1->src_address.as_u32; - tr->dst.ip4.as_u32 = ip4_1->dst_address.as_u32; - } - else - { - tr->length = ip6_1->payload_length; - tr->src.ip6.as_u64[0] = ip6_1->src_address.as_u64[0]; - tr->src.ip6.as_u64[1] = ip6_1->src_address.as_u64[1]; - tr->dst.ip6.as_u64[0] = ip6_1->dst_address.as_u64[0]; - tr->dst.ip6.as_u64[1] = ip6_1->dst_address.as_u64[1]; - } - } - - 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; + } + else + { + cached_next_index = nidx[0] = + sparse_vec_index (gm->next_by_protocol, gre[0]->protocol); + cached_protocol = gre[0]->protocol; + } + + 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], 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], 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); - while (n_left_from > 0 && n_left_to_next > 0) + if (PREDICT_TRUE (next[0] > GRE_INPUT_NEXT_DROP)) { - u32 bi0; - vlib_buffer_t *b0; - gre_header_t *h0; - ip4_header_t *ip4_0; - ip6_header_t *ip6_0; - u16 version0; - int verr0; - u32 i0, next0; - gre_tunnel_key_t key0; - - 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); - ip4_0 = vlib_buffer_get_current (b0); - ip6_0 = (void *) ip4_0; - - if (!is_ipv6) - { - vlib_buffer_advance (b0, sizeof (*ip4_0)); - } - else - { - vlib_buffer_advance (b0, sizeof (*ip6_0)); - } - - h0 = vlib_buffer_get_current (b0); - - i0 = sparse_vec_index (gm->next_by_protocol, h0->protocol); - next0 = vec_elt (gm->next_by_protocol, i0).next_index; - u8 ttype0 = vec_elt (gm->next_by_protocol, i0).tunnel_type; - - 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_DROP)) - { - if (is_ipv6) - { - gre_mk_key6 (&ip6_0->dst_address, - &ip6_0->src_address, - vnet_buffer (b0)->ip.fib_index, - ttype0, 0, &key0.gtk_v6); - } - else - { - gre_mk_key4 (ip4_0->dst_address, - ip4_0->src_address, - vnet_buffer (b0)->ip.fib_index, - ttype0, 0, &key0.gtk_v4); - } - - if ((!is_ipv6 && !gre_match_key4 (&cached_tunnel_key.gtk_v4, - &key0.gtk_v4)) || - (is_ipv6 && !gre_match_key6 (&cached_tunnel_key.gtk_v6, - &key0.gtk_v6))) - { - gre_tunnel_t *t; - uword *p; - - if (!is_ipv6) - { - p = hash_get_mem (gm->tunnel_by_key4, &key0.gtk_v4); - } - else - { - p = hash_get_mem (gm->tunnel_by_key6, &key0.gtk_v6); - } - 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]); - tunnel_sw_if_index = t->sw_if_index; - - cached_tunnel_sw_if_index = tunnel_sw_if_index; - if (!is_ipv6) - { - cached_tunnel_key.gtk_v4 = key0.gtk_v4; - } - else - { - cached_tunnel_key.gtk_v6 = key0.gtk_v6; - } - } - 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, - thread_index, - tunnel_sw_if_index, + 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 /* 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; - if (!is_ipv6) - { - tr->length = ip4_0->length; - tr->src.ip4.as_u32 = ip4_0->src_address.as_u32; - tr->dst.ip4.as_u32 = ip4_0->dst_address.as_u32; - } - else - { - tr->length = ip6_0->payload_length; - tr->src.ip6.as_u64[0] = ip6_0->src_address.as_u64[0]; - tr->src.ip6.as_u64[1] = ip6_0->src_address.as_u64[1]; - tr->dst.ip6.as_u64[0] = ip6_0->dst_address.as_u64[0]; - tr->dst.ip6.as_u64[1] = ip6_0->dst_address.as_u64[1]; - } - } - - vlib_buffer_advance (b0, sizeof (*h0)); - - vlib_validate_buffer_enqueue_x1 (vm, node, next_index, - to_next, n_left_to_next, - bi0, next0); + len[0] /* bytes */ ); + vnet_buffer (b[0])->sw_if_index[VLIB_RX] = tun_sw_if_index[0]; } - vlib_put_next_frame (vm, node, next_index, n_left_to_next); + 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_buffer_enqueue_to_next (vm, node, from, nexts, frame->n_vectors); + vlib_node_increment_counter (vm, - !is_ipv6 ? gre4_input_node.index : - gre6_input_node.index, GRE_ERROR_PKTS_DECAP, - from_frame->n_vectors); - return from_frame->n_vectors; + 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, |