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-rw-r--r--src/vat/api_format.c34
-rw-r--r--src/vnet/api_errno.h3
-rw-r--r--src/vnet/gre/gre.api22
-rw-r--r--src/vnet/gre/gre.c271
-rw-r--r--src/vnet/gre/gre.h189
-rw-r--r--src/vnet/gre/gre_api.c14
-rw-r--r--src/vnet/gre/interface.c330
-rw-r--r--src/vnet/gre/node.c83
-rw-r--r--src/vnet/gre/packet.h106
-rw-r--r--src/vnet/span/node.c15
-rw-r--r--src/vnet/vxlan/vxlan.c4
-rw-r--r--src/vpp/api/custom_dump.c8
12 files changed, 721 insertions, 358 deletions
diff --git a/src/vat/api_format.c b/src/vat/api_format.c
index 8d2cf17b923..99625617883 100644
--- a/src/vat/api_format.c
+++ b/src/vat/api_format.c
@@ -13055,10 +13055,12 @@ api_gre_add_del_tunnel (vat_main_t * vam)
u8 is_add = 1;
u8 ipv4_set = 0;
u8 ipv6_set = 0;
- u8 teb = 0;
+ u8 t_type = GRE_TUNNEL_TYPE_L3;
u8 src_set = 0;
u8 dst_set = 0;
u32 outer_fib_id = 0;
+ u32 session_id = 0;
+ u32 instance = ~0;
int ret;
memset (&src4, 0, sizeof src4);
@@ -13070,6 +13072,8 @@ api_gre_add_del_tunnel (vat_main_t * vam)
{
if (unformat (line_input, "del"))
is_add = 0;
+ else if (unformat (line_input, "instance %d", &instance))
+ ;
else if (unformat (line_input, "src %U", unformat_ip4_address, &src4))
{
src_set = 1;
@@ -13093,7 +13097,9 @@ api_gre_add_del_tunnel (vat_main_t * vam)
else if (unformat (line_input, "outer-fib-id %d", &outer_fib_id))
;
else if (unformat (line_input, "teb"))
- teb = 1;
+ t_type = GRE_TUNNEL_TYPE_TEB;
+ else if (unformat (line_input, "erspan %d", &session_id))
+ t_type = GRE_TUNNEL_TYPE_ERSPAN;
else
{
errmsg ("parse error '%U'", format_unformat_error, line_input);
@@ -13130,9 +13136,11 @@ api_gre_add_del_tunnel (vat_main_t * vam)
clib_memcpy (&mp->src_address, &src6, 16);
clib_memcpy (&mp->dst_address, &dst6, 16);
}
- mp->outer_fib_id = ntohl (outer_fib_id);
+ mp->instance = htonl (instance);
+ mp->outer_fib_id = htonl (outer_fib_id);
mp->is_add = is_add;
- mp->teb = teb;
+ mp->session_id = htons ((u16) session_id);
+ mp->tunnel_type = t_type;
mp->is_ipv6 = ipv6_set;
S (mp);
@@ -13147,11 +13155,12 @@ static void vl_api_gre_tunnel_details_t_handler
ip46_address_t src = to_ip46 (mp->is_ipv6, mp->src_address);
ip46_address_t dst = to_ip46 (mp->is_ipv6, mp->dst_address);
- print (vam->ofp, "%11d%24U%24U%6d%14d",
+ print (vam->ofp, "%11d%11d%24U%24U%13d%14d%12d",
ntohl (mp->sw_if_index),
+ ntohl (mp->instance),
format_ip46_address, &src, IP46_TYPE_ANY,
format_ip46_address, &dst, IP46_TYPE_ANY,
- mp->teb, ntohl (mp->outer_fib_id));
+ mp->tunnel_type, ntohl (mp->outer_fib_id), ntohl (mp->session_id));
}
static void vl_api_gre_tunnel_details_t_handler_json
@@ -13171,6 +13180,7 @@ static void vl_api_gre_tunnel_details_t_handler_json
vat_json_init_object (node);
vat_json_object_add_uint (node, "sw_if_index", ntohl (mp->sw_if_index));
+ vat_json_object_add_uint (node, "instance", ntohl (mp->instance));
if (!mp->is_ipv6)
{
clib_memcpy (&ip4, &mp->src_address, sizeof (ip4));
@@ -13185,9 +13195,10 @@ static void vl_api_gre_tunnel_details_t_handler_json
clib_memcpy (&ip6, &mp->dst_address, sizeof (ip6));
vat_json_object_add_ip6 (node, "dst_address", ip6);
}
- vat_json_object_add_uint (node, "teb", mp->teb);
+ vat_json_object_add_uint (node, "tunnel_type", mp->tunnel_type);
vat_json_object_add_uint (node, "outer_fib_id", ntohl (mp->outer_fib_id));
vat_json_object_add_uint (node, "is_ipv6", mp->is_ipv6);
+ vat_json_object_add_uint (node, "session_id", mp->session_id);
}
static int
@@ -13216,9 +13227,9 @@ api_gre_tunnel_dump (vat_main_t * vam)
if (!vam->json_output)
{
- print (vam->ofp, "%11s%24s%24s%6s%14s",
- "sw_if_index", "src_address", "dst_address", "teb",
- "outer_fib_id");
+ print (vam->ofp, "%11s%11s%24s%24s%13s%14s%12s",
+ "sw_if_index", "instance", "src_address", "dst_address",
+ "tunnel_type", "outer_fib_id", "session_id");
}
/* Get list of gre-tunnel interfaces */
@@ -22885,7 +22896,8 @@ _(geneve_add_del_tunnel, \
_(vxlan_tunnel_dump, "[<intfc> | sw_if_index <nn>]") \
_(geneve_tunnel_dump, "[<intfc> | sw_if_index <nn>]") \
_(gre_add_del_tunnel, \
- "src <ip-addr> dst <ip-addr> [outer-fib-id <nn>] [teb] [del]\n") \
+ "src <ip-addr> dst <ip-addr> [outer-fib-id <nn>] [instance <n>]\n" \
+ "[teb | erspan <session-id>] [del]") \
_(gre_tunnel_dump, "[<intfc> | sw_if_index <nn>]") \
_(l2_fib_clear_table, "") \
_(l2_interface_efp_filter, "sw_if_index <nn> enable | disable") \
diff --git a/src/vnet/api_errno.h b/src/vnet/api_errno.h
index ed8e7bbb649..8c509d7a411 100644
--- a/src/vnet/api_errno.h
+++ b/src/vnet/api_errno.h
@@ -136,7 +136,8 @@ _(ACL_IN_USE_OUTBOUND, -143, "Outbound ACL in use") \
_(INIT_FAILED, -144, "Initialization Failed") \
_(NETLINK_ERROR, -145, "netlink error") \
_(BIER_BSL_UNSUP, -146, "BIER bit-string-length unsupported") \
-_(INSTANCE_IN_USE, -147, "Instance in use")
+_(INSTANCE_IN_USE, -147, "Instance in use") \
+_(INVALID_SESSION_ID, -148, "session ID out of range")
typedef enum
{
diff --git a/src/vnet/gre/gre.api b/src/vnet/gre/gre.api
index b410ac9d49a..28c970154ae 100644
--- a/src/vnet/gre/gre.api
+++ b/src/vnet/gre/gre.api
@@ -13,18 +13,32 @@
* limitations under the License.
*/
-option version = "1.0.0";
+option version = "1.0.1";
+/** \brief Create or delete a GRE tunnel
+ @param client_index - opaque cookie to identify the sender
+ @param context - sender context, to match reply w/ request
+ @param is_add - Use 1 to create the tunnel, 0 to remove it
+ @param is_ipv6 - Use 0 for IPv4, 1 for IPv6
+ @param tunnel_type - 0: L3, 1: TEB, 2: ERSPAN
+ @param instance - optional unique custom device instance, else ~0.
+ @param src_address - Source IP address
+ @param dst_address - Destination IP address, can be multicast
+ @param outer_fib_id - Encap FIB table ID
+ @param session_id - session for ERSPAN tunnel, range 0-1023
+*/
define gre_add_del_tunnel
{
u32 client_index;
u32 context;
u8 is_add;
u8 is_ipv6;
- u8 teb;
+ u8 tunnel_type;
+ u32 instance; /* If non-~0, specifies a custom dev instance */
u8 src_address[16];
u8 dst_address[16];
u32 outer_fib_id;
+ u16 session_id;
};
define gre_add_del_tunnel_reply
@@ -45,11 +59,13 @@ define gre_tunnel_details
{
u32 context;
u32 sw_if_index;
+ u32 instance;
u8 is_ipv6;
- u8 teb;
+ u8 tunnel_type;
u8 src_address[16];
u8 dst_address[16];
u32 outer_fib_id;
+ u16 session_id;
};
/*
diff --git a/src/vnet/gre/gre.c b/src/vnet/gre/gre.c
index c049b87b6a7..a3702920334 100644
--- a/src/vnet/gre/gre.c
+++ b/src/vnet/gre/gre.c
@@ -62,7 +62,7 @@ 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;
@@ -100,7 +100,7 @@ format_gre_header_with_length (u8 * s, va_list * args)
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);
@@ -208,6 +208,7 @@ gre_build_rewrite (vnet_main_t * vnm,
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;
@@ -227,9 +228,7 @@ gre_build_rewrite (vnet_main_t * vnm,
{
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;
@@ -242,9 +241,7 @@ gre_build_rewrite (vnet_main_t * vnm,
{
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;
@@ -256,6 +253,15 @@ gre_build_rewrite (vnet_main_t * vnm,
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);
}
@@ -302,33 +308,43 @@ gre_update_adj (vnet_main_t * vnm, u32 sw_if_index, adj_index_t ai)
t = pool_elt_at_index (gm->tunnels, ti);
is_ipv6 = t->tunnel_dst.fp_proto == FIB_PROTOCOL_IP6 ? 1 : 0;
- 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,
+ (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));
gre_tunnel_stack (ai);
}
+
+typedef enum
+{
+ GRE_ENCAP_NEXT_DROP,
+ GRE_ENCAP_NEXT_L2_MIDCHAIN,
+ GRE_ENCAP_N_NEXT,
+} gre_encap_next_t;
+
+#define NEXT_IDX (GRE_ENCAP_NEXT_L2_MIDCHAIN)
+
/**
- * @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)
+gre_interface_tx (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;
- 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 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);
@@ -344,77 +360,193 @@ gre_interface_tx_inline (vlib_main_t * vm,
/* 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
- */
+ while (n_left_from >= 4 && n_left_to_next >= 2)
+ {
+ 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_index0 == vnet_buffer (b1)->sw_if_index[VLIB_TX])
+ {
+ sw_if_index1 = sw_if_index0;
+ gt1 = gt0;
+ adj_index1 = adj_index0;
+ }
+ else if (sw_if_index1 != vnet_buffer (b1)->sw_if_index[VLIB_TX])
+ {
+ 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_smp_atomic_add (&gt0->gre_sn->seq_num, 1);
+ u64 ver1 = clib_host_to_net_u64 (0x1000000000000000);
+ h0->seq_num = clib_host_to_net_u32 (seq_num);
+ h0->t2_u64 = ver1; /* all 0's except ver=1 */
+ 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_smp_atomic_add (&gt1->gre_sn->seq_num, 1);
+ u64 ver1 = clib_host_to_net_u64 (0x1000000000000000);
+ h1->seq_num = clib_host_to_net_u32 (seq_num);
+ h1->t2_u64 = ver1; /* all 0's except ver=1 */
+ 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);
+ }
+
+ vlib_validate_buffer_enqueue_x2 (vm, node, next_index,
+ to_next, n_left_to_next,
+ bi0, bi1, NEXT_IDX, NEXT_IDX);
+ }
while (n_left_from > 0 && n_left_to_next > 0)
{
- vlib_buffer_t *b0;
- u32 bi0;
+ u32 bi0 = from[0];
+ vlib_buffer_t *b0 = vlib_get_buffer (vm, 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);
+ 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] = gt->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_smp_atomic_add (&gt0->gre_sn->seq_num, 1);
+ u64 ver1 = clib_host_to_net_u64 (0x1000000000000000);
+ h0->seq_num = clib_host_to_net_u32 (seq_num);
+ h0->t2_u64 = ver1; /* all 0's except ver=1 */
+ 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 = gt - gm->tunnels;
- tr->src = gt->tunnel_src;
- tr->dst = gt->tunnel_src;
+ 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);
}
vlib_validate_buffer_enqueue_x1 (vm, node, next_index,
to_next, n_left_to_next,
- bi0, gt->l2_tx_arc);
+ bi0, NEXT_IDX);
}
vlib_put_next_frame (vm, node, next_index, n_left_to_next);
}
- vlib_node_increment_counter (vm, !is_ipv6 ? gre4_input_node.index :
- gre6_input_node.index,
+ 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));
-}
+ .function = gre_interface_tx,
+ .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_DROP] = "error-drop",
+ [GRE_ENCAP_NEXT_L2_MIDCHAIN] = "adj-l2-midchain",
+ },
+};
+
+VLIB_NODE_FUNCTION_MULTIARCH (gre_encap_node, gre_interface_tx)
+/* *INDENT-ON* */
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 *
@@ -433,36 +565,11 @@ VNET_DEVICE_CLASS (gre_device_class) = {
.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",
@@ -523,6 +630,8 @@ gre_init (vlib_main_t * vm)
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
diff --git a/src/vnet/gre/gre.h b/src/vnet/gre/gre.h
index 83bab76f087..b3b0b545190 100644
--- a/src/vnet/gre/gre.h
+++ b/src/vnet/gre/gre.h
@@ -36,44 +36,55 @@ typedef enum
} gre_error_t;
/**
- * A GRE payload protocol registration
- */
-typedef struct
-{
- /** Name (a c string). */
- char *name;
-
- /** GRE protocol type in host byte order. */
- gre_protocol_t protocol;
-
- /** Node which handles this type. */
- u32 node_index;
-
- /** Next index for this type. */
- u32 next_index;
-} gre_protocol_info_t;
-
-/**
* @brief The GRE tunnel type
*/
-typedef enum gre_tunnel_tyoe_t_
+typedef enum gre_tunnel_type_t_
{
/**
* L3 GRE (i.e. this tunnel is in L3 mode)
*/
- GRE_TUNNEL_TYPE_L3,
+ GRE_TUNNEL_TYPE_L3 = 0,
/**
* Transparent Ethernet Bridging - the tunnel is in L2 mode
*/
- GRE_TUNNEL_TYPE_TEB,
+ GRE_TUNNEL_TYPE_TEB = 1,
+ /**
+ * ERSPAN type 2 - the tunnel is for port mirror SPAN output. Each tunnel is
+ * associated with a session ID and expected to be used for encap and output
+ * of mirrored packet from a L2 network only. There is no support for
+ * receiving ERSPAN packets from a GRE ERSPAN tunnel in VPP.
+ */
+ GRE_TUNNEL_TYPE_ERSPAN = 2,
+
+ GRE_TUNNEL_TYPE_N
} gre_tunnel_type_t;
#define GRE_TUNNEL_TYPE_NAMES { \
[GRE_TUNNEL_TYPE_L3] = "L3", \
[GRE_TUNNEL_TYPE_TEB] = "TEB", \
+ [GRE_TUNNEL_TYPE_ERSPAN] = "ERSPAN", \
}
-#define GRE_TUNNEL_N_TYPES ((gre_tunnel_type_t)GRE_TUNNEL_TYPE_TEB+1)
+/**
+ * A GRE payload protocol registration
+ */
+typedef struct
+{
+ /** Name (a c string). */
+ char *name;
+
+ /** GRE protocol type in host byte order. */
+ gre_protocol_t protocol;
+
+ /** GRE tunnel type */
+ gre_tunnel_type_t tunnel_type;
+
+ /** Node which handles this type. */
+ u32 node_index;
+
+ /** Next index for this type. */
+ u32 next_index;
+} gre_protocol_info_t;
/**
* @brief Key for a IPv4 GRE Tunnel
@@ -94,11 +105,12 @@ typedef struct gre_tunnel_key4_t_
};
/**
- * The FIB table the src,dst addresses are in.
- * tunnels with the same IP addresses in different FIBs are not
- * the same tunnel
+ * FIB table index, ERSPAN session ID and tunnel type in u32 bit fields:
+ * - The FIB table index the src,dst addresses are in, top 20 bits
+ * - The Session ID for ERSPAN tunnel type and 0 otherwise, next 10 bits
+ * - Tunnel type, bottom 2 bits
*/
- u32 gtk_fib_index;
+ u32 gtk_fidx_ssid_type;
} __attribute__ ((packed)) gre_tunnel_key4_t;
/**
@@ -114,13 +126,22 @@ typedef struct gre_tunnel_key6_t_
ip6_address_t gtk_dst;
/**
- * The FIB table the src,dst addresses are in.
- * tunnels with the same IP addresses in different FIBs are not
- * the same tunnel
+ * FIB table index, ERSPAN session ID and tunnel type in u32 bit fields:
+ * - The FIB table index the src,dst addresses are in, top 20 bits
+ * - The Session ID for ERSPAN tunnel type and 0 otherwise, next 10 bits
+ * - Tunnel type, bottom 2 bits
*/
- u32 gtk_fib_index;
+ u32 gtk_fidx_ssid_type;
} __attribute__ ((packed)) gre_tunnel_key6_t;
+#define GTK_FIB_INDEX_SHIFT 12
+#define GTK_FIB_INDEX_MASK 0xfffff000
+#define GTK_TYPE_SHIFT 0
+#define GTK_TYPE_MASK 0x3
+#define GTK_SESSION_ID_SHIFT 2
+#define GTK_SESSION_ID_MASK 0xffc
+#define GTK_SESSION_ID_MAX (GTK_SESSION_ID_MASK >> GTK_SESSION_ID_SHIFT)
+
/**
* Union of the two possible key types
*/
@@ -131,6 +152,25 @@ typedef union gre_tunnel_key_t_
} gre_tunnel_key_t;
/**
+ * Used for GRE header seq number generation for ERSPAN encap
+ */
+typedef struct
+{
+ u32 seq_num;
+ u32 ref_count;
+} gre_sn_t;
+
+/**
+ * Hash key for GRE header seq number generation for ERSPAN encap
+ */
+typedef struct
+{
+ ip46_address_t src;
+ ip46_address_t dst;
+ u32 fib_index;
+} gre_sn_key_t;
+
+/**
* @brief A representation of a GRE tunnel
*/
typedef struct
@@ -176,16 +216,34 @@ typedef struct
u32 sibling_index;
/**
- * on a L2 tunnel this is the VLIB arc from the L2-tx to the l2-midchain
+ * an L2 tunnel always rquires an L2 midchain. cache here for DP.
*/
- u32 l2_tx_arc;
+ adj_index_t l2_adj_index;
/**
- * an L2 tunnel always rquires an L2 midchain. cache here for DP.
+ * ERSPAN type 2 session ID, least significant 10 bits of u16
*/
- adj_index_t l2_adj_index;
+ u16 session_id;
+
+ /**
+ * GRE header sequence number (SN) used for ERSPAN type 2 header, must be
+ * bumped automically to be thread safe. As multiple GRE tunnels are created
+ * for the same fib-idx/DIP/SIP with different ERSPAN session number, they all
+ * share the same SN which is kept per FIB/DIP/SIP, as specified by RFC2890.
+ */
+ gre_sn_t *gre_sn;
+
+
+ u32 dev_instance; /* Real device instance in tunnel vector */
+ u32 user_instance; /* Instance name being shown to user */
} gre_tunnel_t;
+typedef struct
+{
+ u8 next_index;
+ u8 tunnel_type;
+} next_info_t;
+
/**
* @brief GRE related global data
*/
@@ -207,21 +265,19 @@ typedef struct
uword *protocol_info_by_name, *protocol_info_by_protocol;
/**
- * Hash mapping ipv4 src/dst addr pair to tunnel
+ * Hash mapping to tunnels with ipv4 src/dst addr
*/
uword *tunnel_by_key4;
/**
- * Hash mapping ipv6 src/dst addr pair to tunnel
+ * Hash mapping to tunnels with ipv6 src/dst addr
*/
uword *tunnel_by_key6;
/**
- * Free vlib hw_if_indices.
- * A free list per-tunnel type since the interfaces ctreated are fo different
- * types and we cannot change the type.
+ * Hash mapping tunnel src/dst addr and fib-idx to sequence number
*/
- u32 *free_gre_tunnel_hw_if_indices[GRE_TUNNEL_N_TYPES];
+ uword *seq_num_by_key;
/**
* Mapping from sw_if_index to tunnel index
@@ -230,11 +286,14 @@ typedef struct
/* Sparse vector mapping gre protocol in network byte order
to next index. */
- u16 *next_by_protocol;
+ next_info_t *next_by_protocol;
/* convenience */
vlib_main_t *vlib_main;
vnet_main_t *vnet_main;
+
+ /* Record used instances */
+ uword *instance_used;
} gre_main_t;
/**
@@ -266,11 +325,6 @@ gre_get_protocol_info (gre_main_t * em, gre_protocol_t protocol)
extern gre_main_t gre_main;
-/* Register given node index to take input for given gre type. */
-void
-gre_register_input_type (vlib_main_t * vm,
- gre_protocol_t protocol, u32 node_index);
-
extern clib_error_t *gre_interface_admin_up_down (vnet_main_t * vnm,
u32 hw_if_index, u32 flags);
@@ -284,8 +338,8 @@ format_function_t format_gre_header_with_length;
extern vlib_node_registration_t gre4_input_node;
extern vlib_node_registration_t gre6_input_node;
+extern vlib_node_registration_t gre_encap_node;
extern vnet_device_class_t gre_device_class;
-extern vnet_device_class_t gre_device_teb_class;
/* Parse gre protocol as 0xXXXX or protocol name.
In either host or network byte order. */
@@ -297,8 +351,8 @@ unformat_function_t unformat_gre_header;
unformat_function_t unformat_pg_gre_header;
void
-gre_register_input_protocol (vlib_main_t * vm,
- gre_protocol_t protocol, u32 node_index);
+gre_register_input_protocol (vlib_main_t * vm, gre_protocol_t protocol,
+ u32 node_index, gre_tunnel_type_t tunnel_type);
/* manually added to the interface output node in gre.c */
#define GRE_OUTPUT_NEXT_LOOKUP 1
@@ -306,24 +360,26 @@ gre_register_input_protocol (vlib_main_t * vm,
typedef struct
{
u8 is_add;
-
- ip46_address_t src, dst;
+ u8 tunnel_type;
u8 is_ipv6;
+ u32 instance;
+ ip46_address_t src, dst;
u32 outer_fib_id;
- u8 teb;
+ u16 session_id;
} vnet_gre_add_del_tunnel_args_t;
int vnet_gre_add_del_tunnel
(vnet_gre_add_del_tunnel_args_t * a, u32 * sw_if_indexp);
static inline void
-gre_mk_key4 (const ip4_address_t * src,
- const ip4_address_t * dst,
- u32 fib_index, gre_tunnel_key4_t * key)
+gre_mk_key4 (ip4_address_t src,
+ ip4_address_t dst,
+ u32 fib_index, u8 ttype, u16 session_id, gre_tunnel_key4_t * key)
{
- key->gtk_src = *src;
- key->gtk_dst = *dst;
- key->gtk_fib_index = fib_index;
+ key->gtk_src = src;
+ key->gtk_dst = dst;
+ key->gtk_fidx_ssid_type = ttype |
+ (fib_index << GTK_FIB_INDEX_SHIFT) | (session_id << GTK_SESSION_ID_SHIFT);
}
static inline int
@@ -331,17 +387,18 @@ gre_match_key4 (const gre_tunnel_key4_t * key1,
const gre_tunnel_key4_t * key2)
{
return ((key1->gtk_as_u64 == key2->gtk_as_u64) &&
- (key1->gtk_fib_index == key2->gtk_fib_index));
+ (key1->gtk_fidx_ssid_type == key2->gtk_fidx_ssid_type));
}
static inline void
gre_mk_key6 (const ip6_address_t * src,
const ip6_address_t * dst,
- u32 fib_index, gre_tunnel_key6_t * key)
+ u32 fib_index, u8 ttype, u16 session_id, gre_tunnel_key6_t * key)
{
key->gtk_src = *src;
key->gtk_dst = *dst;
- key->gtk_fib_index = fib_index;
+ key->gtk_fidx_ssid_type = ttype |
+ (fib_index << GTK_FIB_INDEX_SHIFT) | (session_id << GTK_SESSION_ID_SHIFT);
}
static inline int
@@ -352,7 +409,15 @@ gre_match_key6 (const gre_tunnel_key6_t * key1,
(key1->gtk_src.as_u64[1] == key2->gtk_src.as_u64[1]) &&
(key1->gtk_dst.as_u64[0] == key2->gtk_dst.as_u64[0]) &&
(key1->gtk_dst.as_u64[1] == key2->gtk_dst.as_u64[1]) &&
- (key1->gtk_fib_index == key2->gtk_fib_index));
+ (key1->gtk_fidx_ssid_type == key2->gtk_fidx_ssid_type));
+}
+
+static inline void
+gre_mk_sn_key (const gre_tunnel_t * gt, gre_sn_key_t * key)
+{
+ key->src = gt->tunnel_src;
+ key->dst = gt->tunnel_dst.fp_addr;
+ key->fib_index = gt->outer_fib_index;
}
#endif /* included_gre_h */
diff --git a/src/vnet/gre/gre_api.c b/src/vnet/gre/gre_api.c
index 4dad6147fcf..63d4ca4695b 100644
--- a/src/vnet/gre/gre_api.c
+++ b/src/vnet/gre/gre_api.c
@@ -66,8 +66,10 @@ static void vl_api_gre_add_del_tunnel_t_handler
memset (a, 0, sizeof (*a));
a->is_add = mp->is_add;
- a->teb = mp->teb;
+ a->tunnel_type = mp->tunnel_type;
a->is_ipv6 = mp->is_ipv6;
+ a->instance = ntohl (mp->instance);
+ a->session_id = ntohs (mp->session_id);
/* ip addresses sent in network byte order */
if (!mp->is_ipv6)
@@ -102,23 +104,25 @@ static void send_gre_tunnel_details
rmp = vl_msg_api_alloc (sizeof (*rmp));
memset (rmp, 0, sizeof (*rmp));
- rmp->_vl_msg_id = ntohs (VL_API_GRE_TUNNEL_DETAILS);
+ rmp->_vl_msg_id = htons (VL_API_GRE_TUNNEL_DETAILS);
if (!is_ipv6)
{
clib_memcpy (rmp->src_address, &(t->tunnel_src.ip4.as_u8), 4);
clib_memcpy (rmp->dst_address, &(t->tunnel_dst.fp_addr.ip4.as_u8), 4);
ft = fib_table_get (t->outer_fib_index, FIB_PROTOCOL_IP4);
- rmp->outer_fib_id = ft->ft_table_id;
+ rmp->outer_fib_id = htonl (ft->ft_table_id);
}
else
{
clib_memcpy (rmp->src_address, &(t->tunnel_src.ip6.as_u8), 16);
clib_memcpy (rmp->dst_address, &(t->tunnel_dst.fp_addr.ip6.as_u8), 16);
ft = fib_table_get (t->outer_fib_index, FIB_PROTOCOL_IP6);
- rmp->outer_fib_id = ft->ft_table_id;
+ rmp->outer_fib_id = htonl (ft->ft_table_id);
}
- rmp->teb = (GRE_TUNNEL_TYPE_TEB == t->type);
+ rmp->tunnel_type = t->type;
+ rmp->instance = htonl (t->user_instance);
rmp->sw_if_index = htonl (t->sw_if_index);
+ rmp->session_id = htons (t->session_id);
rmp->context = context;
rmp->is_ipv6 = is_ipv6;
diff --git a/src/vnet/gre/interface.c b/src/vnet/gre/interface.c
index ce9685d55a3..97c4f1643d9 100644
--- a/src/vnet/gre/interface.c
+++ b/src/vnet/gre/interface.c
@@ -31,35 +31,41 @@ static u8 *
format_gre_tunnel (u8 * s, va_list * args)
{
gre_tunnel_t *t = va_arg (*args, gre_tunnel_t *);
- gre_main_t *gm = &gre_main;
- s = format (s, "[%d] src %U dst %U fib-idx %d sw-if-idx %d ",
- t - gm->tunnels,
+ s = format (s, "[%d] instance %d src %U dst %U fib-idx %d sw-if-idx %d ",
+ t->dev_instance, t->user_instance,
format_ip46_address, &t->tunnel_src, IP46_TYPE_ANY,
format_ip46_address, &t->tunnel_dst.fp_addr, IP46_TYPE_ANY,
t->outer_fib_index, t->sw_if_index);
- s = format (s, "payload %s", gre_tunnel_type_names[t->type]);
+ s = format (s, "payload %s ", gre_tunnel_type_names[t->type]);
+
+ if (t->type == GRE_TUNNEL_TYPE_ERSPAN)
+ s = format (s, "session %d ", t->session_id);
+
+ if (t->type != GRE_TUNNEL_TYPE_L3)
+ s = format (s, "l2-adj-idx %d ", t->l2_adj_index);
return s;
}
static gre_tunnel_t *
-gre_tunnel_db_find (const ip46_address_t * src,
- const ip46_address_t * dst,
- u32 out_fib_index, u8 is_ipv6, gre_tunnel_key_t * key)
+gre_tunnel_db_find (const vnet_gre_add_del_tunnel_args_t * a,
+ u32 outer_fib_index, gre_tunnel_key_t * key)
{
gre_main_t *gm = &gre_main;
uword *p;
- if (!is_ipv6)
+ if (!a->is_ipv6)
{
- gre_mk_key4 (&src->ip4, &dst->ip4, out_fib_index, &key->gtk_v4);
+ gre_mk_key4 (a->src.ip4, a->dst.ip4, outer_fib_index,
+ a->tunnel_type, a->session_id, &key->gtk_v4);
p = hash_get_mem (gm->tunnel_by_key4, &key->gtk_v4);
}
else
{
- gre_mk_key6 (&src->ip6, &dst->ip6, out_fib_index, &key->gtk_v6);
+ gre_mk_key6 (&a->src.ip6, &a->dst.ip6, outer_fib_index,
+ a->tunnel_type, a->session_id, &key->gtk_v6);
p = hash_get_mem (gm->tunnel_by_key6, &key->gtk_v6);
}
@@ -79,11 +85,11 @@ gre_tunnel_db_add (gre_tunnel_t * t, gre_tunnel_key_t * key)
if (t->tunnel_dst.fp_proto == FIB_PROTOCOL_IP6)
{
- hash_set_mem (gm->tunnel_by_key6, &t->key->gtk_v6, t - gm->tunnels);
+ hash_set_mem (gm->tunnel_by_key6, &t->key->gtk_v6, t->dev_instance);
}
else
{
- hash_set_mem (gm->tunnel_by_key4, &t->key->gtk_v4, t - gm->tunnels);
+ hash_set_mem (gm->tunnel_by_key4, &t->key->gtk_v4, t->dev_instance);
}
}
@@ -136,23 +142,48 @@ gre_tunnel_stack (adj_index_t ai)
gt = pool_elt_at_index (gm->tunnels,
gm->tunnel_index_by_sw_if_index[sw_if_index]);
- /*
- * find the adjacency that is contributed by the FIB entry
- * that this tunnel resovles via, and use it as the next adj
- * in the midchain
- */
- if (vnet_hw_interface_get_flags (vnet_get_main (),
- gt->hw_if_index) &
- VNET_HW_INTERFACE_FLAG_LINK_UP)
+ if ((vnet_hw_interface_get_flags (vnet_get_main (), gt->hw_if_index) &
+ VNET_HW_INTERFACE_FLAG_LINK_UP) == 0)
{
- adj_nbr_midchain_stack (ai,
- fib_entry_contribute_ip_forwarding
- (gt->fib_entry_index));
+ adj_nbr_midchain_unstack (ai);
+ return;
}
- else
+
+ dpo_id_t tmp = DPO_INVALID;
+ fib_forward_chain_type_t fib_fwd = (FIB_PROTOCOL_IP6 == adj->ia_nh_proto) ?
+ FIB_FORW_CHAIN_TYPE_UNICAST_IP6 : FIB_FORW_CHAIN_TYPE_UNICAST_IP4;
+
+ fib_entry_contribute_forwarding (gt->fib_entry_index, fib_fwd, &tmp);
+ if (DPO_LOAD_BALANCE == tmp.dpoi_type)
{
- adj_nbr_midchain_unstack (ai);
+ /*
+ * post GRE rewrite we will load-balance. However, the GRE encap
+ * is always the same for this adjacency/tunnel and hence the IP/GRE
+ * src,dst hash is always the same result too. So we do that hash now and
+ * stack on the choice.
+ * If the choice is an incomplete adj then we will need a poke when
+ * it becomes complete. This happens since the adj update walk propagates
+ * as far a recursive paths.
+ */
+ const dpo_id_t *choice;
+ load_balance_t *lb;
+ int hash;
+
+ lb = load_balance_get (tmp.dpoi_index);
+
+ if (fib_fwd == FIB_FORW_CHAIN_TYPE_UNICAST_IP4)
+ hash = ip4_compute_flow_hash ((ip4_header_t *) adj_get_rewrite (ai),
+ lb->lb_hash_config);
+ else
+ hash = ip6_compute_flow_hash ((ip6_header_t *) adj_get_rewrite (ai),
+ lb->lb_hash_config);
+ choice =
+ load_balance_get_bucket_i (lb, hash & lb->lb_n_buckets_minus_1);
+ dpo_copy (&tmp, choice);
}
+
+ adj_nbr_midchain_stack (ai, &tmp);
+ dpo_reset (&tmp);
}
/**
@@ -230,7 +261,8 @@ const static fib_node_vft_t gre_vft = {
};
static int
-vnet_gre_tunnel_add (vnet_gre_add_del_tunnel_args_t * a, u32 * sw_if_indexp)
+vnet_gre_tunnel_add (vnet_gre_add_del_tunnel_args_t * a,
+ u32 outer_fib_index, u32 * sw_if_indexp)
{
gre_main_t *gm = &gre_main;
vnet_main_t *vnm = gm->vnet_main;
@@ -239,112 +271,67 @@ vnet_gre_tunnel_add (vnet_gre_add_del_tunnel_args_t * a, u32 * sw_if_indexp)
gre_tunnel_t *t;
vnet_hw_interface_t *hi;
u32 hw_if_index, sw_if_index;
- u32 outer_fib_index;
- u8 address[6];
clib_error_t *error;
u8 is_ipv6 = a->is_ipv6;
gre_tunnel_key_t key;
- if (!is_ipv6)
- outer_fib_index = ip4_fib_index_from_table_id (a->outer_fib_id);
- else
- outer_fib_index = ip6_fib_index_from_table_id (a->outer_fib_id);
-
- if (~0 == outer_fib_index)
- return VNET_API_ERROR_NO_SUCH_FIB;
-
- t =
- gre_tunnel_db_find (&a->src, &a->dst, outer_fib_index, a->is_ipv6, &key);
-
+ t = gre_tunnel_db_find (a, outer_fib_index, &key);
if (NULL != t)
- return VNET_API_ERROR_INVALID_VALUE;
+ return VNET_API_ERROR_IF_ALREADY_EXISTS;
pool_get_aligned (gm->tunnels, t, CLIB_CACHE_LINE_BYTES);
memset (t, 0, sizeof (*t));
- fib_node_init (&t->node, FIB_NODE_TYPE_GRE_TUNNEL);
- if (a->teb)
- t->type = GRE_TUNNEL_TYPE_TEB;
- else
- t->type = GRE_TUNNEL_TYPE_L3;
-
- if (vec_len (gm->free_gre_tunnel_hw_if_indices[t->type]) > 0)
+ /* Reconcile the real dev_instance and a possible requested instance */
+ u32 t_idx = t - gm->tunnels; /* tunnel index (or instance) */
+ u32 u_idx = a->instance; /* user specified instance */
+ if (u_idx == ~0)
+ u_idx = t_idx;
+ if (hash_get (gm->instance_used, u_idx))
{
- vnet_interface_main_t *im = &vnm->interface_main;
-
- hw_if_index = gm->free_gre_tunnel_hw_if_indices[t->type]
- [vec_len (gm->free_gre_tunnel_hw_if_indices[t->type]) - 1];
- _vec_len (gm->free_gre_tunnel_hw_if_indices[t->type]) -= 1;
-
- hi = vnet_get_hw_interface (vnm, hw_if_index);
- hi->dev_instance = t - gm->tunnels;
- hi->hw_instance = hi->dev_instance;
-
- /* clear old stats of freed tunnel before reuse */
- sw_if_index = hi->sw_if_index;
- vnet_interface_counter_lock (im);
- vlib_zero_combined_counter
- (&im->combined_sw_if_counters[VNET_INTERFACE_COUNTER_TX],
- sw_if_index);
- vlib_zero_combined_counter (&im->combined_sw_if_counters
- [VNET_INTERFACE_COUNTER_RX], sw_if_index);
- vlib_zero_simple_counter (&im->sw_if_counters
- [VNET_INTERFACE_COUNTER_DROP], sw_if_index);
- vnet_interface_counter_unlock (im);
- if (GRE_TUNNEL_TYPE_TEB == t->type)
- {
- t->l2_tx_arc = vlib_node_add_named_next (vlib_get_main (),
- hi->tx_node_index,
- "adj-l2-midchain");
- }
+ pool_put (gm->tunnels, t);
+ return VNET_API_ERROR_INSTANCE_IN_USE;
}
+ hash_set (gm->instance_used, u_idx, 1);
+
+ t->dev_instance = t_idx; /* actual */
+ t->user_instance = u_idx; /* name */
+ fib_node_init (&t->node, FIB_NODE_TYPE_GRE_TUNNEL);
+
+ t->type = a->tunnel_type;
+ if (t->type == GRE_TUNNEL_TYPE_ERSPAN)
+ t->session_id = a->session_id;
+
+ if (t->type == GRE_TUNNEL_TYPE_L3)
+ hw_if_index = vnet_register_interface (vnm, gre_device_class.index, t_idx,
+ gre_hw_interface_class.index,
+ t_idx);
else
{
- if (GRE_TUNNEL_TYPE_TEB == t->type)
- {
- /* Default MAC address (d00b:eed0:0000 + sw_if_index) */
- memset (address, 0, sizeof (address));
- address[0] = 0xd0;
- address[1] = 0x0b;
- address[2] = 0xee;
- address[3] = 0xd0;
- address[4] = t - gm->tunnels;
-
- error = ethernet_register_interface (vnm,
- gre_device_teb_class.index,
- t - gm->tunnels, address,
- &hw_if_index, 0);
-
- if (error)
- {
- clib_error_report (error);
- return VNET_API_ERROR_INVALID_REGISTRATION;
- }
- hi = vnet_get_hw_interface (vnm, hw_if_index);
-
- t->l2_tx_arc = vlib_node_add_named_next (vlib_get_main (),
- hi->tx_node_index,
- "adj-l2-midchain");
- }
- else
+ /* Default MAC address (d00b:eed0:0000 + sw_if_index) */
+ u8 address[6] = { 0xd0, 0x0b, 0xee, 0xd0, (u8) t_idx >> 8, (u8) t_idx };
+ error = ethernet_register_interface (vnm, gre_device_class.index, t_idx,
+ address, &hw_if_index, 0);
+ if (error)
{
- hw_if_index = vnet_register_interface (vnm,
- gre_device_class.index,
- t - gm->tunnels,
- gre_hw_interface_class.index,
- t - gm->tunnels);
+ clib_error_report (error);
+ return VNET_API_ERROR_INVALID_REGISTRATION;
}
- hi = vnet_get_hw_interface (vnm, hw_if_index);
- sw_if_index = hi->sw_if_index;
}
+ /* Set GRE tunnel interface output node (not used for L3 payload) */
+ vnet_set_interface_output_node (vnm, hw_if_index, gre_encap_node.index);
+
+ hi = vnet_get_hw_interface (vnm, hw_if_index);
+ sw_if_index = hi->sw_if_index;
+
t->hw_if_index = hw_if_index;
t->outer_fib_index = outer_fib_index;
t->sw_if_index = sw_if_index;
t->l2_adj_index = ADJ_INDEX_INVALID;
vec_validate_init_empty (gm->tunnel_index_by_sw_if_index, sw_if_index, ~0);
- gm->tunnel_index_by_sw_if_index[sw_if_index] = t - gm->tunnels;
+ gm->tunnel_index_by_sw_if_index[sw_if_index] = t_idx;
if (!is_ipv6)
{
@@ -378,20 +365,37 @@ vnet_gre_tunnel_add (vnet_gre_add_del_tunnel_args_t * a, u32 * sw_if_indexp)
t->tunnel_dst.fp_addr = a->dst;
gre_tunnel_db_add (t, &key);
+ if (t->type == GRE_TUNNEL_TYPE_ERSPAN)
+ {
+ gre_sn_key_t skey;
+ gre_sn_t *gre_sn;
- t->fib_entry_index =
- fib_table_entry_special_add (outer_fib_index,
- &t->tunnel_dst,
- FIB_SOURCE_RR, FIB_ENTRY_FLAG_NONE);
- t->sibling_index =
- fib_entry_child_add (t->fib_entry_index,
- FIB_NODE_TYPE_GRE_TUNNEL, t - gm->tunnels);
+ gre_mk_sn_key (t, &skey);
+ gre_sn = (gre_sn_t *) hash_get_mem (gm->seq_num_by_key, &skey);
+ if (gre_sn != NULL)
+ {
+ gre_sn->ref_count++;
+ t->gre_sn = gre_sn;
+ }
+ else
+ {
+ gre_sn = clib_mem_alloc (sizeof (gre_sn_t));
+ gre_sn->seq_num = 0;
+ gre_sn->ref_count = 1;
+ t->gre_sn = gre_sn;
+ hash_set_mem_alloc (&gm->seq_num_by_key, &skey, (uword) gre_sn);
+ }
+ }
+
+ t->fib_entry_index = fib_table_entry_special_add
+ (outer_fib_index, &t->tunnel_dst, FIB_SOURCE_RR, FIB_ENTRY_FLAG_NONE);
+ t->sibling_index = fib_entry_child_add
+ (t->fib_entry_index, FIB_NODE_TYPE_GRE_TUNNEL, t_idx);
- if (GRE_TUNNEL_TYPE_TEB == t->type)
+ if (t->type != GRE_TUNNEL_TYPE_L3)
{
- t->l2_adj_index = adj_nbr_add_or_lock (t->tunnel_dst.fp_proto,
- VNET_LINK_ETHERNET,
- &zero_addr, sw_if_index);
+ t->l2_adj_index = adj_nbr_add_or_lock
+ (t->tunnel_dst.fp_proto, VNET_LINK_ETHERNET, &zero_addr, sw_if_index);
gre_update_adj (vnm, t->sw_if_index, t->l2_adj_index);
}
@@ -403,38 +407,29 @@ vnet_gre_tunnel_add (vnet_gre_add_del_tunnel_args_t * a, u32 * sw_if_indexp)
static int
vnet_gre_tunnel_delete (vnet_gre_add_del_tunnel_args_t * a,
- u32 * sw_if_indexp)
+ u32 outer_fib_index, u32 * sw_if_indexp)
{
gre_main_t *gm = &gre_main;
vnet_main_t *vnm = gm->vnet_main;
gre_tunnel_t *t;
gre_tunnel_key_t key;
u32 sw_if_index;
- u32 outer_fib_index;
-
- if (!a->is_ipv6)
- outer_fib_index = ip4_fib_index_from_table_id (a->outer_fib_id);
- else
- outer_fib_index = ip6_fib_index_from_table_id (a->outer_fib_id);
-
- if (~0 == outer_fib_index)
- return VNET_API_ERROR_NO_SUCH_FIB;
-
- t =
- gre_tunnel_db_find (&a->src, &a->dst, outer_fib_index, a->is_ipv6, &key);
+ t = gre_tunnel_db_find (a, outer_fib_index, &key);
if (NULL == t)
return VNET_API_ERROR_NO_SUCH_ENTRY;
sw_if_index = t->sw_if_index;
vnet_sw_interface_set_flags (vnm, sw_if_index, 0 /* down */ );
+
/* make sure tunnel is removed from l2 bd or xconnect */
set_int_l2_mode (gm->vlib_main, vnm, MODE_L3, sw_if_index, 0, 0, 0, 0);
- vec_add1 (gm->free_gre_tunnel_hw_if_indices[t->type], t->hw_if_index);
gm->tunnel_index_by_sw_if_index[sw_if_index] = ~0;
- if (GRE_TUNNEL_TYPE_TEB == t->type)
- adj_unlock (t->l2_adj_index);
+ if (t->type == GRE_TUNNEL_TYPE_L3)
+ vnet_delete_hw_interface (vnm, t->hw_if_index);
+ else
+ ethernet_delete_interface (vnm, t->hw_if_index);
if (t->l2_adj_index != ADJ_INDEX_INVALID)
adj_unlock (t->l2_adj_index);
@@ -442,6 +437,16 @@ vnet_gre_tunnel_delete (vnet_gre_add_del_tunnel_args_t * a,
fib_entry_child_remove (t->fib_entry_index, t->sibling_index);
fib_table_entry_delete_index (t->fib_entry_index, FIB_SOURCE_RR);
+ ASSERT ((t->type != GRE_TUNNEL_TYPE_ERSPAN) || (t->gre_sn != NULL));
+ if ((t->type == GRE_TUNNEL_TYPE_ERSPAN) && (t->gre_sn->ref_count-- == 1))
+ {
+ gre_sn_key_t skey;
+ gre_mk_sn_key (t, &skey);
+ hash_unset_mem_free (&gm->seq_num_by_key, &skey);
+ clib_mem_free (t->gre_sn);
+ }
+
+ hash_unset (gm->instance_used, t->user_instance);
gre_tunnel_db_remove (t);
fib_node_deinit (&t->node);
pool_put (gm->tunnels, t);
@@ -456,10 +461,23 @@ int
vnet_gre_add_del_tunnel (vnet_gre_add_del_tunnel_args_t * a,
u32 * sw_if_indexp)
{
+ u32 outer_fib_index;
+
+ if (!a->is_ipv6)
+ outer_fib_index = ip4_fib_index_from_table_id (a->outer_fib_id);
+ else
+ outer_fib_index = ip6_fib_index_from_table_id (a->outer_fib_id);
+
+ if (~0 == outer_fib_index)
+ return VNET_API_ERROR_NO_SUCH_FIB;
+
+ if (a->session_id > GTK_SESSION_ID_MAX)
+ return VNET_API_ERROR_INVALID_SESSION_ID;
+
if (a->is_add)
- return (vnet_gre_tunnel_add (a, sw_if_indexp));
+ return (vnet_gre_tunnel_add (a, outer_fib_index, sw_if_indexp));
else
- return (vnet_gre_tunnel_delete (a, sw_if_indexp));
+ return (vnet_gre_tunnel_delete (a, outer_fib_index, sw_if_indexp));
}
clib_error_t *
@@ -503,8 +521,10 @@ create_gre_tunnel_command_fn (vlib_main_t * vm,
unformat_input_t _line_input, *line_input = &_line_input;
vnet_gre_add_del_tunnel_args_t _a, *a = &_a;
ip46_address_t src, dst;
+ u32 instance = ~0;
u32 outer_fib_id = 0;
- u8 teb = 0;
+ gre_tunnel_type_t t_type = GRE_TUNNEL_TYPE_L3;
+ u32 session_id = 0;
int rv;
u32 num_m_args = 0;
u8 is_add = 1;
@@ -521,6 +541,8 @@ create_gre_tunnel_command_fn (vlib_main_t * vm,
{
if (unformat (line_input, "del"))
is_add = 0;
+ else if (unformat (line_input, "instance %d", &instance))
+ ;
else
if (unformat (line_input, "src %U", unformat_ip4_address, &src.ip4))
{
@@ -548,7 +570,9 @@ create_gre_tunnel_command_fn (vlib_main_t * vm,
else if (unformat (line_input, "outer-fib-id %d", &outer_fib_id))
;
else if (unformat (line_input, "teb"))
- teb = 1;
+ t_type = GRE_TUNNEL_TYPE_TEB;
+ else if (unformat (line_input, "erspan %d", &session_id))
+ t_type = GRE_TUNNEL_TYPE_ERSPAN;
else
{
error = clib_error_return (0, "unknown input `%U'",
@@ -582,9 +606,12 @@ create_gre_tunnel_command_fn (vlib_main_t * vm,
}
memset (a, 0, sizeof (*a));
+ a->is_add = is_add;
a->outer_fib_id = outer_fib_id;
- a->teb = teb;
+ a->tunnel_type = t_type;
+ a->session_id = session_id;
a->is_ipv6 = ipv6_set;
+ a->instance = instance;
if (!ipv6_set)
{
clib_memcpy (&a->src.ip4, &src.ip4, sizeof (src.ip4));
@@ -596,10 +623,7 @@ create_gre_tunnel_command_fn (vlib_main_t * vm,
clib_memcpy (&a->dst.ip6, &dst.ip6, sizeof (dst.ip6));
}
- if (is_add)
- rv = vnet_gre_tunnel_add (a, &sw_if_index);
- else
- rv = vnet_gre_tunnel_delete (a, &sw_if_index);
+ rv = vnet_gre_add_del_tunnel (a, &sw_if_index);
switch (rv)
{
@@ -607,13 +631,23 @@ create_gre_tunnel_command_fn (vlib_main_t * vm,
vlib_cli_output (vm, "%U\n", format_vnet_sw_if_index_name,
vnet_get_main (), sw_if_index);
break;
- case VNET_API_ERROR_INVALID_VALUE:
+ case VNET_API_ERROR_IF_ALREADY_EXISTS:
error = clib_error_return (0, "GRE tunnel already exists...");
goto done;
case VNET_API_ERROR_NO_SUCH_FIB:
error = clib_error_return (0, "outer fib ID %d doesn't exist\n",
outer_fib_id);
goto done;
+ case VNET_API_ERROR_NO_SUCH_ENTRY:
+ error = clib_error_return (0, "GRE tunnel doesn't exist");
+ goto done;
+ case VNET_API_ERROR_INVALID_SESSION_ID:
+ error = clib_error_return (0, "session ID %d out of range\n",
+ session_id);
+ goto done;
+ case VNET_API_ERROR_INSTANCE_IN_USE:
+ error = clib_error_return (0, "Instance is in use");
+ goto done;
default:
error =
clib_error_return (0, "vnet_gre_add_del_tunnel returned %d", rv);
@@ -629,8 +663,8 @@ done:
/* *INDENT-OFF* */
VLIB_CLI_COMMAND (create_gre_tunnel_command, static) = {
.path = "create gre tunnel",
- .short_help = "create gre tunnel src <addr> dst <addr> "
- "[outer-fib-id <fib>] [teb] [del]",
+ .short_help = "create gre tunnel src <addr> dst <addr> [instance <n>] "
+ "[outer-fib-id <fib>] [teb | erspan <session-id>] [del]",
.function = create_gre_tunnel_command_fn,
};
/* *INDENT-ON* */
diff --git a/src/vnet/gre/node.c b/src/vnet/gre/node.c
index 7223b017df7..ee32e602ce9 100644
--- a/src/vnet/gre/node.c
+++ b/src/vnet/gre/node.c
@@ -164,8 +164,10 @@ gre_input (vlib_main_t * vm,
protocol1 = h1->protocol;
sparse_vec_index2 (gm->next_by_protocol, protocol0, protocol1,
&i0, &i1);
- next0 = vec_elt (gm->next_by_protocol, i0);
- next1 = vec_elt (gm->next_by_protocol, 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 ==
@@ -190,22 +192,21 @@ gre_input (vlib_main_t * vm,
/* 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))
+ 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, &key0.gtk_v6);
+ 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, &key0.gtk_v4);
+ 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,
@@ -264,22 +265,21 @@ gre_input (vlib_main_t * vm,
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))
+ 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, &key1.gtk_v6);
+ 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, &key1.gtk_v4);
+ 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,
@@ -423,7 +423,8 @@ gre_input (vlib_main_t * vm,
h0 = vlib_buffer_get_current (b0);
i0 = sparse_vec_index (gm->next_by_protocol, h0->protocol);
- next0 = vec_elt (gm->next_by_protocol, i0);
+ 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
@@ -440,22 +441,21 @@ gre_input (vlib_main_t * vm,
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))
+ 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, &key0.gtk_v6);
+ 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, &key0.gtk_v4);
+ 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,
@@ -592,9 +592,7 @@ VLIB_REGISTER_NODE (gre4_input_node) = {
.format_trace = format_gre_rx_trace,
.unformat_buffer = unformat_gre_header,
};
-/* *INDENT-ON* */
-/* *INDENT-OFF* */
VLIB_REGISTER_NODE (gre6_input_node) = {
.function = gre6_input,
.name = "gre6-input",
@@ -617,17 +615,19 @@ VLIB_REGISTER_NODE (gre6_input_node) = {
.format_trace = format_gre_rx_trace,
.unformat_buffer = unformat_gre_header,
};
-/* *INDENT-ON* */
VLIB_NODE_FUNCTION_MULTIARCH (gre4_input_node, gre4_input)
VLIB_NODE_FUNCTION_MULTIARCH (gre6_input_node, gre6_input)
- void
- gre_register_input_protocol (vlib_main_t * vm,
- gre_protocol_t protocol, u32 node_index)
+/* *INDENT-ON* */
+
+void
+gre_register_input_protocol (vlib_main_t * vm,
+ gre_protocol_t protocol, u32 node_index,
+ gre_tunnel_type_t tunnel_type)
{
gre_main_t *em = &gre_main;
gre_protocol_info_t *pi;
- u16 *n;
+ next_info_t *n;
u32 i;
{
@@ -638,6 +638,7 @@ VLIB_NODE_FUNCTION_MULTIARCH (gre6_input_node, gre6_input)
pi = gre_get_protocol_info (em, protocol);
pi->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);
@@ -645,7 +646,8 @@ VLIB_NODE_FUNCTION_MULTIARCH (gre6_input_node, gre6_input)
/* Setup gre protocol -> next index sparse vector mapping. */
n = sparse_vec_validate (em->next_by_protocol,
clib_host_to_net_u16 (protocol));
- n[0] = pi->next_index;
+ n->next_index = pi->next_index;
+ n->tunnel_type = tunnel_type;
}
static void
@@ -689,14 +691,17 @@ gre_input_init (vlib_main_t * vm)
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);
+ gre_register_input_protocol (vm, GRE_PROTOCOL_teb,
+ 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);
+ mpls_unicast_input->index, GRE_TUNNEL_TYPE_L3);
ip4_register_protocol (IP_PROTOCOL_GRE, gre4_input_node.index);
ip6_register_protocol (IP_PROTOCOL_GRE, gre6_input_node.index);
diff --git a/src/vnet/gre/packet.h b/src/vnet/gre/packet.h
index 64b39f2c40b..034a611eda3 100644
--- a/src/vnet/gre/packet.h
+++ b/src/vnet/gre/packet.h
@@ -24,6 +24,7 @@ _ (0x86DD, ip6) \
_ (0x6558, teb) \
_ (0x0806, arp) \
_ (0x8847, mpls_unicast) \
+_ (0x88BE, erspan) \
_ (0x894F, nsh)
typedef enum
@@ -54,6 +55,111 @@ typedef struct
u16 protocol;
} gre_header_t;
+/* From draft-foschiano-erspan-03.txt
+
+ Different frame variants known as "ERSPAN Types" can be
+ distinguished based on the GRE "Protocol Type" field value: Type I
+ and II's value is 0x88BE while Type III's is 0x22EB [ETYPES].
+
+ GRE header for ERSPAN Type II encapsulation (8 octets [34:41])
+ 0 1 2 3
+ 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+ +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ |0|0|0|1|0|00000|000000000|00000| Protocol Type for ERSPAN |
+ +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ | Sequence Number (increments per packet per session) |
+ +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+
+ Note that in the above GRE header [RFC1701] out of the C, R, K, S,
+ s, Recur, Flags, Version fields only S (bit 03) may be set to 1. The
+ other fields are always set to zero.
+
+ ERSPAN Type II's frame format also adds a special 8-octet ERSPAN
+ "feature" header on top of the MAC/IPv4/GRE headers to enclose the
+ raw mirrored frames.
+
+ The ERSPAN Type II feature header is described below:
+
+ ERSPAN Type II header (8 octets [42:49])
+ 0 1 2 3
+ 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+ +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ | Ver | VLAN | COS | En|T| Session ID |
+ +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ | Reserved | Index |
+ +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+
+ The various fields of the above header are described in this table:
+
+ Field Position Length Definition
+ [octet:bit] (bits)
+
+ Ver [42:0] 4 ERSPAN Encapsulation version.
+ This indicates the version of
+ the ERSPAN encapsulation
+ specification. Set to 0x1 for
+ Type II.
+
+ VLAN [42:4] 12 Original VLAN of the frame,
+ mirrored from the source.
+ If the En field is set to 11,
+ the value of VLAN is undefined.
+
+ COS [44:0] 3 Original class of service of the
+ frame, mirrored from the source.
+
+ En [44:3] 2 The trunk encapsulation type
+ associated with the ERSPAN source
+ port for ingress ERSPAN traffic.
+
+ The possible values are:
+ 00-originally without VLAN tag
+ 01-originally ISL encapsulated
+ 10-originally 802.1Q encapsulated
+ 11-VLAN tag preserved in frame.
+
+ T [44:5] 1 This bit indicates that the frame
+ copy encapsulated in the ERSPAN
+ packet has been truncated. This
+ occurs if the ERSPAN encapsulated
+ frame exceeds the configured MTU.
+
+ Session ID [44:6] 10 Identification associated with
+ (ERSPAN ID) each ERSPAN session. Must be
+ unique between the source and the
+ receiver(s). (See section below.)
+
+ Reserved [46:0] 12 All bits are set to zero
+
+ Index [47:4] 20 A 20 bit index/port number
+ associated with the ERSPAN
+ traffic's port and
+ direction (ingress/egress). N.B.:
+ This field is platform dependent.
+*/
+
+/* *INDENT-OFF* */
+typedef CLIB_PACKED (struct {
+ u32 seq_num;
+ union
+ {
+ struct
+ {
+ u16 ver_vlan;
+ u16 cos_en_t_session;
+ u32 res_index;
+ } t2;
+ u64 t2_u64;
+ };
+}) erspan_t2_t;
+
+typedef CLIB_PACKED (struct {
+ gre_header_t gre;
+ erspan_t2_t erspan;
+}) erspan_t2_header_t;
+
+/* *INDENT-ON* */
+
#endif /* included_vnet_gre_packet_h */
/*
diff --git a/src/vnet/span/node.c b/src/vnet/span/node.c
index 9d83d4ef288..8e2105bcc82 100644
--- a/src/vnet/span/node.c
+++ b/src/vnet/span/node.c
@@ -87,7 +87,8 @@ span_mirror (vlib_main_t * vm, vlib_node_runtime_t * node, u32 sw_if_index0,
if (mirror_frames[i] == 0)
{
if (sf == SPAN_FEAT_L2)
- mirror_frames[i] = vlib_get_frame_to_node (vnm->vlib_main, l2output_node.index);
+ mirror_frames[i] = vlib_get_frame_to_node (vnm->vlib_main,
+ l2output_node.index);
else
mirror_frames[i] = vnet_get_frame_to_sw_interface (vnm, i);
}
@@ -108,8 +109,16 @@ span_mirror (vlib_main_t * vm, vlib_node_runtime_t * node, u32 sw_if_index0,
span_trace_t *t = vlib_add_trace (vm, node, b0, sizeof (*t));
t->src_sw_if_index = sw_if_index0;
t->mirror_sw_if_index = i;
- }
- }
+#if 0
+ /* Enable this path to allow packet trace of SPAN packets.
+ Note that all SPAN packets will show up on the trace output
+ with the first SPAN packet (since they are in the same frame)
+ thus making trace output of the original packet confusing */
+ mirror_frames[i]->flags |= VLIB_FRAME_TRACE;
+ c0->flags |= VLIB_BUFFER_IS_TRACED;
+#endif
+ }
+ }
}));
/* *INDENT-ON* */
}
diff --git a/src/vnet/vxlan/vxlan.c b/src/vnet/vxlan/vxlan.c
index be10fa2043b..b34c00d738c 100644
--- a/src/vnet/vxlan/vxlan.c
+++ b/src/vnet/vxlan/vxlan.c
@@ -795,10 +795,6 @@ vxlan_add_del_tunnel_command_fn (vlib_main_t * vm,
error = clib_error_return (0, "tunnel does not exist...");
goto done;
- case VNET_API_ERROR_INVALID_ARGUMENT:
- error = clib_error_return (0, "Invalid argument");
- goto done;
-
case VNET_API_ERROR_INSTANCE_IN_USE:
error = clib_error_return (0, "Instance is in use");
goto done;
diff --git a/src/vpp/api/custom_dump.c b/src/vpp/api/custom_dump.c
index a51b6aa2dc6..57c8bb3bbfb 100644
--- a/src/vpp/api/custom_dump.c
+++ b/src/vpp/api/custom_dump.c
@@ -26,6 +26,7 @@
#include <vnet/l2/l2_input.h>
#include <vnet/srv6/sr.h>
#include <vnet/srmpls/sr_mpls.h>
+#include <vnet/gre/gre.h>
#include <vnet/vxlan-gpe/vxlan_gpe.h>
#include <vnet/geneve/geneve.h>
#include <vnet/classify/policer_classify.h>
@@ -1622,9 +1623,14 @@ static void *vl_api_gre_add_del_tunnel_t_print
(ip46_address_t *) & (mp->src_address),
mp->is_ipv6 ? IP46_TYPE_IP6 : IP46_TYPE_IP4);
- if (mp->teb)
+ s = format (s, "instance %d ", ntohl (mp->instance));
+
+ if (mp->tunnel_type == GRE_TUNNEL_TYPE_TEB)
s = format (s, "teb ");
+ if (mp->tunnel_type == GRE_TUNNEL_TYPE_ERSPAN)
+ s = format (s, "erspan %d ", ntohs (mp->session_id));
+
if (mp->outer_fib_id)
s = format (s, "outer-fib-id %d ", ntohl (mp->outer_fib_id));