#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;
typedef struct
u64 as_u64[3];
};
} ip6_and_gre_union_t;
+#endif /* CLIB_MARCH_VARIANT */
/* Packet trace structure */
ip46_address_t dst;
} gre_tx_trace_t;
+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)
{
gre_tx_trace_t *t = va_arg (*args, gre_tx_trace_t *);
s = format (s, "GRE: tunnel %d len %d src %U dst %U",
- t->tunnel_id, clib_net_to_host_u16 (t->length),
+ t->tunnel_id, t->length,
format_ip46_address, &t->src, IP46_TYPE_ANY,
format_ip46_address, &t->dst, IP46_TYPE_ANY);
return s;
s = format (s, "GRE %U", format_gre_protocol, p);
- if (max_header_bytes != 0 && header_bytes > max_header_bytes)
+ if (max_header_bytes != 0 && header_bytes < max_header_bytes)
{
gre_protocol_info_t *pi = gre_get_protocol_info (gm, p);
vlib_node_t *node = vlib_get_node (gm->vlib_main, pi->node_index);
gre_main_t *gm = &gre_main;
ip4_and_gre_header_t *h4;
ip6_and_gre_header_t *h6;
+ gre_header_t *gre;
u8 *rewrite = NULL;
gre_tunnel_t *t;
u32 ti;
{
vec_validate (rewrite, sizeof (*h4) - 1);
h4 = (ip4_and_gre_header_t *) rewrite;
- h4->gre.protocol =
- clib_host_to_net_u16 (gre_proto_from_vnet_link (link_type));
-
+ gre = &h4->gre;
h4->ip4.ip_version_and_header_length = 0x45;
h4->ip4.ttl = 254;
h4->ip4.protocol = IP_PROTOCOL_GRE;
{
vec_validate (rewrite, sizeof (*h6) - 1);
h6 = (ip6_and_gre_header_t *) rewrite;
- h6->gre.protocol =
- clib_host_to_net_u16 (gre_proto_from_vnet_link (link_type));
-
+ gre = &h6->gre;
h6->ip6.ip_version_traffic_class_and_flow_label =
clib_host_to_net_u32 (6 << 28);
h6->ip6.hop_limit = 255;
h6->ip6.dst_address.as_u64[1] = t->tunnel_dst.fp_addr.ip6.as_u64[1];
}
+ if (PREDICT_FALSE (t->type == GRE_TUNNEL_TYPE_ERSPAN))
+ {
+ gre->protocol = clib_host_to_net_u16 (GRE_PROTOCOL_erspan);
+ gre->flags_and_version = clib_host_to_net_u16 (GRE_FLAGS_SEQUENCE);
+ }
+ else
+ gre->protocol =
+ clib_host_to_net_u16 (gre_proto_from_vnet_link (link_type));
+
return (rewrite);
}
/* Fixup the payload length field in the GRE tunnel encap that was applied
* at the midchain node */
ip0->payload_length =
- clib_host_to_net_u16 (vlib_buffer_length_in_chain (vm, b0))
- - sizeof (*ip0);
+ clib_host_to_net_u16 (vlib_buffer_length_in_chain (vm, b0) -
+ sizeof (*ip0));
}
void
{
gre_main_t *gm = &gre_main;
gre_tunnel_t *t;
- u32 ti;
+ adj_flags_t af;
u8 is_ipv6;
+ u32 ti;
ti = gm->tunnel_index_by_sw_if_index[sw_if_index];
t = pool_elt_at_index (gm->tunnels, ti);
is_ipv6 = t->tunnel_dst.fp_proto == FIB_PROTOCOL_IP6 ? 1 : 0;
+ af = ADJ_FLAG_MIDCHAIN_IP_STACK;
+
+ if (VNET_LINK_ETHERNET == adj_get_link_type (ai))
+ af |= ADJ_FLAG_MIDCHAIN_NO_COUNT;
- adj_nbr_midchain_update_rewrite (ai, !is_ipv6 ? gre4_fixup : gre6_fixup,
- NULL,
- (VNET_LINK_ETHERNET ==
- adj_get_link_type (ai) ?
- ADJ_FLAG_MIDCHAIN_NO_COUNT :
- ADJ_FLAG_NONE), gre_build_rewrite (vnm,
- sw_if_index,
- adj_get_link_type
- (ai),
- NULL));
+ adj_nbr_midchain_update_rewrite
+ (ai, !is_ipv6 ? gre4_fixup : gre6_fixup, NULL, af,
+ gre_build_rewrite (vnm, sw_if_index, adj_get_link_type (ai), NULL));
gre_tunnel_stack (ai);
}
+#endif /* CLIB_MARCH_VARIANT */
+
+typedef enum
+{
+ GRE_ENCAP_NEXT_L2_MIDCHAIN,
+ GRE_ENCAP_N_NEXT,
+} gre_encap_next_t;
/**
- * @brief TX function. Only called L2. L3 traffic uses the adj-midchains
+ * @brief TX function. Only called for L2 payload including TEB or ERSPAN.
+ * L3 traffic uses the adj-midchains.
*/
-static uword
-gre_interface_tx_inline (vlib_main_t * vm,
- vlib_node_runtime_t * node, vlib_frame_t * frame)
+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;
- u32 next_index;
- u32 *from, *to_next, n_left_from, n_left_to_next;
- vnet_interface_output_runtime_t *rd = (void *) node->runtime_data;
- const gre_tunnel_t *gt = pool_elt_at_index (gm->tunnels, rd->dev_instance);
- u8 is_ipv6 = gt->tunnel_dst.fp_proto == FIB_PROTOCOL_IP6 ? 1 : 0;
+ 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 };
- /* Vector of buffer / pkt indices we're supposed to process */
from = vlib_frame_vector_args (frame);
-
- /* Number of buffers / pkts */
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;
+ }
- /* Speculatively send the first buffer to the last disposition we used */
- next_index = node->cached_next_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);
+ }
- while (n_left_from > 0)
+ 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]);
+ }
+
+ b += 2;
+ n_left_from -= 2;
+ }
+
+ 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);
- /*
- * FIXME DUAL LOOP
- */
+ 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;
+ }
- 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))
{
- vlib_buffer_t *b0;
- u32 bi0;
-
- 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);
-
- vnet_buffer (b0)->ip.adj_index[VLIB_TX] = gt->l2_adj_index;
-
- 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 = gt - gm->tunnels;
- tr->src = gt->tunnel_src;
- tr->dst = gt->tunnel_src;
- tr->length = vlib_buffer_length_in_chain (vm, b0);
- }
-
- vlib_validate_buffer_enqueue_x1 (vm, node, next_index,
- to_next, n_left_to_next,
- bi0, gt->l2_tx_arc);
+ /* 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_node_increment_counter (vm, !is_ipv6 ? gre4_input_node.index :
- gre6_input_node.index,
+ 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);
return frame->n_vectors;
}
-static uword
-gre_interface_tx (vlib_main_t * vm,
- vlib_node_runtime_t * node, vlib_frame_t * frame)
-{
- return (gre_interface_tx_inline (vm, node, frame));
-}
+static char *gre_error_strings[] = {
+#define gre_error(n,s) s,
+#include "error.def"
+#undef gre_error
+};
-static uword
-gre_teb_interface_tx (vlib_main_t * vm,
- vlib_node_runtime_t * node, vlib_frame_t * frame)
+/* *INDENT-OFF* */
+VLIB_REGISTER_NODE (gre_encap_node) =
{
- return (gre_interface_tx_inline (vm, node, frame));
-}
+ .name = "gre-encap",
+ .vector_size = sizeof (u32),
+ .format_trace = format_gre_tx_trace,
+ .type = VLIB_NODE_TYPE_INTERNAL,
+ .n_errors = GRE_N_ERROR,
+ .error_strings = gre_error_strings,
+ .n_next_nodes = GRE_ENCAP_N_NEXT,
+ .next_nodes = {
+ [GRE_ENCAP_NEXT_L2_MIDCHAIN] = "adj-l2-midchain",
+ },
+};
+/* *INDENT-ON* */
+#ifndef CLIB_MARCH_VARIANT
static u8 *
format_gre_tunnel_name (u8 * s, va_list * args)
{
u32 dev_instance = va_arg (*args, u32);
- return format (s, "gre%d", dev_instance);
-}
+ gre_main_t *gm = &gre_main;
+ gre_tunnel_t *t;
-static u8 *
-format_gre_tunnel_teb_name (u8 * s, va_list * args)
-{
- u32 dev_instance = va_arg (*args, u32);
- return format (s, "teb-gre%d", dev_instance);
+ if (dev_instance >= vec_len (gm->tunnels))
+ return format (s, "<improperly-referenced>");
+
+ t = pool_elt_at_index (gm->tunnels, dev_instance);
+ return format (s, "gre%d", t->user_instance);
}
static u8 *
.format_device_name = format_gre_tunnel_name,
.format_device = format_gre_device,
.format_tx_trace = format_gre_tx_trace,
- .tx_function = gre_interface_tx,
.admin_up_down_function = gre_interface_admin_up_down,
#ifdef SOON
.clear counter = 0;
#endif
};
-/* *INDENT-ON* */
-
-
-/* *INDENT-OFF* */
-VLIB_DEVICE_TX_FUNCTION_MULTIARCH (gre_device_class,
- gre_interface_tx)
-
-VNET_DEVICE_CLASS (gre_device_teb_class) = {
- .name = "GRE TEB tunnel device",
- .format_device_name = format_gre_tunnel_teb_name,
- .format_device = format_gre_device,
- .format_tx_trace = format_gre_tx_trace,
- .tx_function = gre_teb_interface_tx,
- .admin_up_down_function = gre_interface_admin_up_down,
-#ifdef SOON
- .clear counter = 0;
-#endif
-};
-
-/* *INDENT-ON* */
-
-/* *INDENT-OFF* */
-VLIB_DEVICE_TX_FUNCTION_MULTIARCH (gre_device_teb_class,
- gre_teb_interface_tx)
VNET_HW_INTERFACE_CLASS (gre_hw_interface_class) = {
.name = "GRE",
.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)
ip_main_t *im = &ip_main;
ip_protocol_info_t *pi;
- memset (gm, 0, sizeof (gm[0]));
+ clib_memset (gm, 0, sizeof (gm[0]));
gm->vlib_main = vm;
gm->vnet_main = vnet_get_main ();
hash_create_mem (0, sizeof (gre_tunnel_key4_t), sizeof (uword));
gm->tunnel_by_key6 =
hash_create_mem (0, sizeof (gre_tunnel_key6_t), sizeof (uword));
+ gm->seq_num_by_key =
+ hash_create_mem (0, sizeof (gre_sn_key_t), sizeof (uword));
#define _(n,s) add_protocol (gm, GRE_PROTOCOL_##s, #s);
foreach_gre_protocol
VLIB_INIT_FUNCTION (gre_init);
-gre_main_t *
-gre_get_main (vlib_main_t * vm)
-{
- vlib_call_init_function (vm, gre_init);
- return &gre_main;
-}
-
-
/*
* fd.io coding-style-patch-verification: ON
*