#include <vnet/pg/pg.h>
#include <gtpu/gtpu.h>
-vlib_node_registration_t gtpu4_input_node;
-vlib_node_registration_t gtpu6_input_node;
+extern vlib_node_registration_t gtpu4_input_node;
+extern vlib_node_registration_t gtpu6_input_node;
typedef struct {
u32 next_index;
if (is_ip4)
last_key4.as_u64 = ~0;
else
- memset (&last_key6, 0xff, sizeof (last_key6));
+ clib_memset (&last_key6, 0xff, sizeof (last_key6));
from = vlib_frame_vector_args (from_frame);
n_left_from = from_frame->n_vectors;
ip4_header_t * ip4_0, * ip4_1;
ip6_header_t * ip6_0, * ip6_1;
gtpu_header_t * gtpu0, * gtpu1;
- u32 gtpu_hdr_len0 = 0, gtpu_hdr_len1 =0 ;
+ u32 gtpu_hdr_len0, gtpu_hdr_len1;
uword * p0, * p1;
u32 tunnel_index0, tunnel_index1;
gtpu_tunnel_t * t0, * t1, * mt0 = NULL, * mt1 = NULL;
gtpu6_tunnel_key_t key6_0, key6_1;
u32 error0, error1;
u32 sw_if_index0, sw_if_index1, len0, len1;
+ u8 has_space0, has_space1;
+ u8 ver0, ver1;
/* Prefetch next iteration. */
{
/* udp leaves current_data pointing at the gtpu header */
gtpu0 = vlib_buffer_get_current (b0);
gtpu1 = vlib_buffer_get_current (b1);
- if (is_ip4) {
- vlib_buffer_advance
- (b0, -(word)(sizeof(udp_header_t)+sizeof(ip4_header_t)));
- vlib_buffer_advance
- (b1, -(word)(sizeof(udp_header_t)+sizeof(ip4_header_t)));
- ip4_0 = vlib_buffer_get_current (b0);
- ip4_1 = vlib_buffer_get_current (b1);
- } else {
- vlib_buffer_advance
- (b0, -(word)(sizeof(udp_header_t)+sizeof(ip6_header_t)));
- vlib_buffer_advance
- (b1, -(word)(sizeof(udp_header_t)+sizeof(ip6_header_t)));
- ip6_0 = vlib_buffer_get_current (b0);
- ip6_1 = vlib_buffer_get_current (b1);
- }
-
- /* pop (ip, udp, gtpu) */
- if (is_ip4) {
- vlib_buffer_advance
- (b0, sizeof(*ip4_0)+sizeof(udp_header_t));
- vlib_buffer_advance
- (b1, sizeof(*ip4_1)+sizeof(udp_header_t));
- } else {
- vlib_buffer_advance
- (b0, sizeof(*ip6_0)+sizeof(udp_header_t));
- vlib_buffer_advance
- (b1, sizeof(*ip6_1)+sizeof(udp_header_t));
- }
+ if (is_ip4)
+ {
+ ip4_0 = (void *)((u8*)gtpu0 - sizeof(udp_header_t) - sizeof(ip4_header_t));
+ ip4_1 = (void *)((u8*)gtpu1 - sizeof(udp_header_t) - sizeof(ip4_header_t));
+ }
+ else
+ {
+ ip6_0 = (void *)((u8*)gtpu0 - sizeof(udp_header_t) - sizeof(ip6_header_t));
+ ip6_1 = (void *)((u8*)gtpu1 - sizeof(udp_header_t) - sizeof(ip6_header_t));
+ }
tunnel_index0 = ~0;
error0 = 0;
tunnel_index1 = ~0;
error1 = 0;
- if (PREDICT_FALSE ((gtpu0->ver_flags & GTPU_VER_MASK) != GTPU_V1_VER))
+ /* speculatively load gtp header version field */
+ ver0 = gtpu0->ver_flags;
+ ver1 = gtpu1->ver_flags;
+
+ /*
+ * Manipulate gtpu header
+ * TBD: Manipulate Sequence Number and N-PDU Number
+ * TBD: Manipulate Next Extension Header
+ */
+ gtpu_hdr_len0 = sizeof(gtpu_header_t) - (((ver0 & GTPU_E_S_PN_BIT) == 0) * 4);
+ gtpu_hdr_len1 = sizeof(gtpu_header_t) - (((ver1 & GTPU_E_S_PN_BIT) == 0) * 4);
+
+ has_space0 = vlib_buffer_has_space (b0, gtpu_hdr_len0);
+ has_space1 = vlib_buffer_has_space (b1, gtpu_hdr_len1);
+
+ if (PREDICT_FALSE (((ver0 & GTPU_VER_MASK) != GTPU_V1_VER) | (!has_space0)))
{
- error0 = GTPU_ERROR_BAD_VER;
+ error0 = has_space0 ? GTPU_ERROR_BAD_VER : GTPU_ERROR_TOO_SMALL;
next0 = GTPU_INPUT_NEXT_DROP;
goto trace0;
}
tunnel_index0 = last_tunnel_index;
t0 = pool_elt_at_index (gtm->tunnels, tunnel_index0);
- /* Validate GTPU tunnel encap-fib index agaist packet */
+ /* Validate GTPU tunnel encap-fib index against packet */
if (PREDICT_FALSE (validate_gtpu_fib (b0, t0, is_ip4) == 0))
{
error0 = GTPU_ERROR_NO_SUCH_TUNNEL;
next0 = GTPU_INPUT_NEXT_DROP;
goto trace0;
}
- clib_memcpy (&last_key6, &key6_0, sizeof(key6_0));
+ clib_memcpy_fast (&last_key6, &key6_0, sizeof(key6_0));
tunnel_index0 = last_tunnel_index = p0[0];
}
else
tunnel_index0 = last_tunnel_index;
t0 = pool_elt_at_index (gtm->tunnels, tunnel_index0);
- /* Validate GTPU tunnel encap-fib index agaist packet */
+ /* Validate GTPU tunnel encap-fib index against packet */
if (PREDICT_FALSE (validate_gtpu_fib (b0, t0, is_ip4) == 0))
{
error0 = GTPU_ERROR_NO_SUCH_TUNNEL;
}
next0:
- /* Manipulate gtpu header */
- if (PREDICT_FALSE((gtpu0->ver_flags & GTPU_E_S_PN_BIT) != 0))
- {
- gtpu_hdr_len0 = sizeof(gtpu_header_t);
-
- /* Manipulate Sequence Number and N-PDU Number */
- /* TBD */
-
- /* Manipulate Next Extension Header */
- /* TBD */
- }
- else
- {
- gtpu_hdr_len0 = sizeof(gtpu_header_t) - 4;
- }
-
/* Pop gtpu header */
vlib_buffer_advance (b0, gtpu_hdr_len0);
tr->next_index = next0;
tr->error = error0;
tr->tunnel_index = tunnel_index0;
- tr->teid = clib_net_to_host_u32(gtpu0->teid);
+ tr->teid = has_space0 ? clib_net_to_host_u32(gtpu0->teid) : ~0;
}
- if (PREDICT_FALSE ((gtpu1->ver_flags & GTPU_VER_MASK) != GTPU_V1_VER))
+ if (PREDICT_FALSE (((ver1 & GTPU_VER_MASK) != GTPU_V1_VER) | (!has_space1)))
{
- error1 = GTPU_ERROR_BAD_VER;
+ error1 = has_space1 ? GTPU_ERROR_BAD_VER : GTPU_ERROR_TOO_SMALL;
next1 = GTPU_INPUT_NEXT_DROP;
goto trace1;
}
tunnel_index1 = last_tunnel_index;
t1 = pool_elt_at_index (gtm->tunnels, tunnel_index1);
- /* Validate GTPU tunnel encap-fib index agaist packet */
+ /* Validate GTPU tunnel encap-fib index against packet */
if (PREDICT_FALSE (validate_gtpu_fib (b1, t1, is_ip4) == 0))
{
error1 = GTPU_ERROR_NO_SUCH_TUNNEL;
goto trace1;
}
- clib_memcpy (&last_key6, &key6_1, sizeof(key6_1));
+ clib_memcpy_fast (&last_key6, &key6_1, sizeof(key6_1));
tunnel_index1 = last_tunnel_index = p1[0];
}
else
tunnel_index1 = last_tunnel_index;
t1 = pool_elt_at_index (gtm->tunnels, tunnel_index1);
- /* Validate GTPU tunnel encap-fib index agaist packet */
+ /* Validate GTPU tunnel encap-fib index against packet */
if (PREDICT_FALSE (validate_gtpu_fib (b1, t1, is_ip4) == 0))
{
error1 = GTPU_ERROR_NO_SUCH_TUNNEL;
}
next1:
- /* Manipulate gtpu header */
- if (PREDICT_FALSE((gtpu1->ver_flags & GTPU_E_S_PN_BIT) != 0))
- {
- gtpu_hdr_len1 = sizeof(gtpu_header_t);
-
- /* Manipulate Sequence Number and N-PDU Number */
- /* TBD */
-
- /* Manipulate Next Extension Header */
- /* TBD */
- }
- else
- {
- gtpu_hdr_len1 = sizeof(gtpu_header_t) - 4;
- }
-
/* Pop gtpu header */
vlib_buffer_advance (b1, gtpu_hdr_len1);
tr->next_index = next1;
tr->error = error1;
tr->tunnel_index = tunnel_index1;
- tr->teid = clib_net_to_host_u32(gtpu1->teid);
+ tr->teid = has_space1 ? clib_net_to_host_u32(gtpu1->teid) : ~0;
}
vlib_validate_buffer_enqueue_x2 (vm, node, next_index,
ip4_header_t * ip4_0;
ip6_header_t * ip6_0;
gtpu_header_t * gtpu0;
- u32 gtpu_hdr_len0 = 0;
+ u32 gtpu_hdr_len0;
uword * p0;
u32 tunnel_index0;
gtpu_tunnel_t * t0, * mt0 = NULL;
gtpu6_tunnel_key_t key6_0;
u32 error0;
u32 sw_if_index0, len0;
+ u8 has_space0;
+ u8 ver0;
bi0 = from[0];
to_next[0] = bi0;
/* udp leaves current_data pointing at the gtpu header */
gtpu0 = vlib_buffer_get_current (b0);
if (is_ip4) {
- vlib_buffer_advance
- (b0, -(word)(sizeof(udp_header_t)+sizeof(ip4_header_t)));
- ip4_0 = vlib_buffer_get_current (b0);
- } else {
- vlib_buffer_advance
- (b0, -(word)(sizeof(udp_header_t)+sizeof(ip6_header_t)));
- ip6_0 = vlib_buffer_get_current (b0);
- }
-
- /* pop (ip, udp) */
- if (is_ip4) {
- vlib_buffer_advance
- (b0, sizeof(*ip4_0)+sizeof(udp_header_t));
+ ip4_0 = (void *)((u8*)gtpu0 - sizeof(udp_header_t) - sizeof(ip4_header_t));
} else {
- vlib_buffer_advance
- (b0, sizeof(*ip6_0)+sizeof(udp_header_t));
+ ip6_0 = (void *)((u8*)gtpu0 - sizeof(udp_header_t) - sizeof(ip6_header_t));
}
tunnel_index0 = ~0;
error0 = 0;
- if (PREDICT_FALSE ((gtpu0->ver_flags & GTPU_VER_MASK) != GTPU_V1_VER))
- {
- error0 = GTPU_ERROR_BAD_VER;
- next0 = GTPU_INPUT_NEXT_DROP;
- goto trace00;
- }
+
+ /* speculatively load gtp header version field */
+ ver0 = gtpu0->ver_flags;
+
+ /*
+ * Manipulate gtpu header
+ * TBD: Manipulate Sequence Number and N-PDU Number
+ * TBD: Manipulate Next Extension Header
+ */
+ gtpu_hdr_len0 = sizeof(gtpu_header_t) - (((ver0 & GTPU_E_S_PN_BIT) == 0) * 4);
+
+ has_space0 = vlib_buffer_has_space (b0, gtpu_hdr_len0);
+
+ if (PREDICT_FALSE (((ver0 & GTPU_VER_MASK) != GTPU_V1_VER) | (!has_space0)))
+ {
+ error0 = has_space0 ? GTPU_ERROR_BAD_VER : GTPU_ERROR_TOO_SMALL;
+ next0 = GTPU_INPUT_NEXT_DROP;
+ goto trace00;
+ }
if (is_ip4) {
key4_0.src = ip4_0->src_address.as_u32;
tunnel_index0 = last_tunnel_index;
t0 = pool_elt_at_index (gtm->tunnels, tunnel_index0);
- /* Validate GTPU tunnel encap-fib index agaist packet */
+ /* Validate GTPU tunnel encap-fib index against packet */
if (PREDICT_FALSE (validate_gtpu_fib (b0, t0, is_ip4) == 0))
{
error0 = GTPU_ERROR_NO_SUCH_TUNNEL;
next0 = GTPU_INPUT_NEXT_DROP;
goto trace00;
}
- clib_memcpy (&last_key6, &key6_0, sizeof(key6_0));
+ clib_memcpy_fast (&last_key6, &key6_0, sizeof(key6_0));
tunnel_index0 = last_tunnel_index = p0[0];
}
else
tunnel_index0 = last_tunnel_index;
t0 = pool_elt_at_index (gtm->tunnels, tunnel_index0);
- /* Validate GTPU tunnel encap-fib index agaist packet */
+ /* Validate GTPU tunnel encap-fib index against packet */
if (PREDICT_FALSE (validate_gtpu_fib (b0, t0, is_ip4) == 0))
{
error0 = GTPU_ERROR_NO_SUCH_TUNNEL;
}
next00:
- /* Manipulate gtpu header */
- if (PREDICT_FALSE((gtpu0->ver_flags & GTPU_E_S_PN_BIT) != 0))
- {
- gtpu_hdr_len0 = sizeof(gtpu_header_t);
-
- /* Manipulate Sequence Number and N-PDU Number */
- /* TBD */
-
- /* Manipulate Next Extension Header */
- /* TBD */
- }
- else
- {
- gtpu_hdr_len0 = sizeof(gtpu_header_t) - 4;
- }
-
/* Pop gtpu header */
vlib_buffer_advance (b0, gtpu_hdr_len0);
tr->next_index = next0;
tr->error = error0;
tr->tunnel_index = tunnel_index0;
- tr->teid = clib_net_to_host_u32(gtpu0->teid);
+ tr->teid = has_space0 ? clib_net_to_host_u32(gtpu0->teid) : ~0;
}
vlib_validate_buffer_enqueue_x1 (vm, node, next_index,
to_next, n_left_to_next,
return from_frame->n_vectors;
}
-static uword
-gtpu4_input (vlib_main_t * vm,
+VLIB_NODE_FN (gtpu4_input_node) (vlib_main_t * vm,
vlib_node_runtime_t * node,
vlib_frame_t * from_frame)
{
return gtpu_input(vm, node, from_frame, /* is_ip4 */ 1);
}
-static uword
-gtpu6_input (vlib_main_t * vm,
+VLIB_NODE_FN (gtpu6_input_node) (vlib_main_t * vm,
vlib_node_runtime_t * node,
vlib_frame_t * from_frame)
{
};
VLIB_REGISTER_NODE (gtpu4_input_node) = {
- .function = gtpu4_input,
.name = "gtpu4-input",
/* Takes a vector of packets. */
.vector_size = sizeof (u32),
// $$$$ .unformat_buffer = unformat_gtpu_header,
};
-VLIB_NODE_FUNCTION_MULTIARCH (gtpu4_input_node, gtpu4_input)
-
VLIB_REGISTER_NODE (gtpu6_input_node) = {
- .function = gtpu6_input,
.name = "gtpu6-input",
/* Takes a vector of packets. */
.vector_size = sizeof (u32),
// $$$$ .unformat_buffer = unformat_gtpu_header,
};
-VLIB_NODE_FUNCTION_MULTIARCH (gtpu6_input_node, gtpu6_input)
-
-
typedef enum {
IP_GTPU_BYPASS_NEXT_DROP,
IP_GTPU_BYPASS_NEXT_GTPU,
}
/* Setup packet for next IP feature */
- vnet_feature_next(vnet_buffer(b0)->sw_if_index[VLIB_RX], &next0, b0);
- vnet_feature_next(vnet_buffer(b1)->sw_if_index[VLIB_RX], &next1, b1);
+ vnet_feature_next(&next0, b0);
+ vnet_feature_next(&next1, b1);
if (is_ip4)
{
ip60 = vlib_buffer_get_current (b0);
/* Setup packet for next IP feature */
- vnet_feature_next(vnet_buffer(b0)->sw_if_index[VLIB_RX], &next0, b0);
+ vnet_feature_next(&next0, b0);
if (is_ip4)
/* Treat IP4 frag packets as "experimental" protocol for now
return frame->n_vectors;
}
-static uword
-ip4_gtpu_bypass (vlib_main_t * vm,
+VLIB_NODE_FN (ip4_gtpu_bypass_node) (vlib_main_t * vm,
vlib_node_runtime_t * node,
vlib_frame_t * frame)
{
}
VLIB_REGISTER_NODE (ip4_gtpu_bypass_node) = {
- .function = ip4_gtpu_bypass,
.name = "ip4-gtpu-bypass",
.vector_size = sizeof (u32),
.format_trace = format_ip4_forward_next_trace,
};
-VLIB_NODE_FUNCTION_MULTIARCH (ip4_gtpu_bypass_node,ip4_gtpu_bypass)
-
+#ifndef CLIB_MARCH_VARIANT
/* Dummy init function to get us linked in. */
clib_error_t * ip4_gtpu_bypass_init (vlib_main_t * vm)
{ return 0; }
VLIB_INIT_FUNCTION (ip4_gtpu_bypass_init);
+#endif /* CLIB_MARCH_VARIANT */
-static uword
-ip6_gtpu_bypass (vlib_main_t * vm,
+VLIB_NODE_FN (ip6_gtpu_bypass_node) (vlib_main_t * vm,
vlib_node_runtime_t * node,
vlib_frame_t * frame)
{
}
VLIB_REGISTER_NODE (ip6_gtpu_bypass_node) = {
- .function = ip6_gtpu_bypass,
.name = "ip6-gtpu-bypass",
.vector_size = sizeof (u32),
.format_trace = format_ip6_forward_next_trace,
};
-VLIB_NODE_FUNCTION_MULTIARCH (ip6_gtpu_bypass_node,ip6_gtpu_bypass)
-
+#ifndef CLIB_MARCH_VARIANT
/* Dummy init function to get us linked in. */
clib_error_t * ip6_gtpu_bypass_init (vlib_main_t * vm)
{ return 0; }
VLIB_INIT_FUNCTION (ip6_gtpu_bypass_init);
+
+#define foreach_gtpu_flow_error \
+ _(NONE, "no error") \
+ _(IP_CHECKSUM_ERROR, "Rx ip checksum errors") \
+ _(IP_HEADER_ERROR, "Rx ip header errors") \
+ _(UDP_CHECKSUM_ERROR, "Rx udp checksum errors") \
+ _(UDP_LENGTH_ERROR, "Rx udp length errors")
+
+typedef enum
+{
+#define _(f,s) GTPU_FLOW_ERROR_##f,
+ foreach_gtpu_flow_error
+#undef _
+#define gtpu_error(n,s) GTPU_FLOW_ERROR_##n,
+#include <gtpu/gtpu_error.def>
+#undef gtpu_error
+ GTPU_FLOW_N_ERROR,
+} gtpu_flow_error_t;
+
+static char *gtpu_flow_error_strings[] = {
+#define _(n,s) s,
+ foreach_gtpu_flow_error
+#undef _
+#define gtpu_error(n,s) s,
+#include <gtpu/gtpu_error.def>
+#undef gtpu_error
+#undef _
+
+};
+
+#define gtpu_local_need_csum_check(_b) \
+ (!(_b->flags & VNET_BUFFER_F_L4_CHECKSUM_COMPUTED \
+ || _b->flags & VNET_BUFFER_F_OFFLOAD_UDP_CKSUM))
+
+#define gtpu_local_csum_is_valid(_b) \
+ ((_b->flags & VNET_BUFFER_F_L4_CHECKSUM_CORRECT \
+ || _b->flags & VNET_BUFFER_F_OFFLOAD_UDP_CKSUM) != 0)
+
+static_always_inline u8
+gtpu_validate_udp_csum (vlib_main_t * vm, vlib_buffer_t *b)
+{
+ u32 flags = b->flags;
+ enum { offset = sizeof(ip4_header_t) + sizeof(udp_header_t)};
+
+ /* Verify UDP checksum */
+ if ((flags & VNET_BUFFER_F_L4_CHECKSUM_COMPUTED) == 0)
+ {
+ vlib_buffer_advance (b, -offset);
+ flags = ip4_tcp_udp_validate_checksum (vm, b);
+ vlib_buffer_advance (b, offset);
+ }
+
+ return (flags & VNET_BUFFER_F_L4_CHECKSUM_CORRECT) != 0;
+}
+
+static_always_inline u8
+gtpu_check_ip (vlib_buffer_t *b, u16 payload_len)
+{
+ ip4_header_t * ip4_hdr = vlib_buffer_get_current(b) -
+ sizeof(ip4_header_t) - sizeof(udp_header_t);
+ u16 ip_len = clib_net_to_host_u16 (ip4_hdr->length);
+ u16 expected = payload_len + sizeof(ip4_header_t) + sizeof(udp_header_t);
+ return ip_len > expected || ip4_hdr->ttl == 0 || ip4_hdr->ip_version_and_header_length != 0x45;
+}
+
+static_always_inline u8
+gtpu_check_ip_udp_len (vlib_buffer_t *b)
+{
+ ip4_header_t * ip4_hdr = vlib_buffer_get_current(b) -
+ sizeof(ip4_header_t) - sizeof(udp_header_t);
+ udp_header_t * udp_hdr = vlib_buffer_get_current(b) - sizeof(udp_header_t);
+ u16 ip_len = clib_net_to_host_u16 (ip4_hdr->length);
+ u16 udp_len = clib_net_to_host_u16 (udp_hdr->length);
+ return udp_len > ip_len;
+}
+
+static_always_inline u8
+gtpu_err_code (u8 ip_err0, u8 udp_err0, u8 csum_err0)
+{
+ u8 error0 = GTPU_FLOW_ERROR_NONE;
+ if (ip_err0)
+ error0 = GTPU_FLOW_ERROR_IP_HEADER_ERROR;
+ if (udp_err0)
+ error0 = GTPU_FLOW_ERROR_UDP_LENGTH_ERROR;
+ if (csum_err0)
+ error0 = GTPU_FLOW_ERROR_UDP_CHECKSUM_ERROR;
+ return error0;
+}
+
+
+always_inline uword
+gtpu_flow_input (vlib_main_t * vm,
+ vlib_node_runtime_t * node,
+ vlib_frame_t * from_frame)
+{
+ u32 n_left_from, next_index, * from, * to_next;
+ gtpu_main_t * gtm = >pu_main;
+ vnet_main_t * vnm = gtm->vnet_main;
+ vnet_interface_main_t * im = &vnm->interface_main;
+ u32 pkts_decapsulated = 0;
+ u32 thread_index = vlib_get_thread_index();
+ u32 stats_sw_if_index, stats_n_packets, stats_n_bytes;
+ u8 ip_err0, ip_err1, udp_err0, udp_err1, csum_err0, csum_err1;
+
+ from = vlib_frame_vector_args (from_frame);
+ n_left_from = from_frame->n_vectors;
+
+ next_index = node->cached_next_index;
+ stats_sw_if_index = node->runtime_data[0];
+ stats_n_packets = stats_n_bytes = 0;
+
+ while (n_left_from > 0)
+ {
+ u32 n_left_to_next;
+
+ vlib_get_next_frame (vm, node, next_index,
+ to_next, n_left_to_next);
+
+ while (n_left_from >= 4 && n_left_to_next >= 2)
+ {
+ u32 bi0, bi1;
+ vlib_buffer_t * b0, * b1;
+ u32 next0, next1;
+ gtpu_header_t * gtpu0, * gtpu1;
+ u32 gtpu_hdr_len0, gtpu_hdr_len1;
+ u32 tunnel_index0, tunnel_index1;
+ gtpu_tunnel_t * t0, * t1;
+ u32 error0, error1;
+ u32 sw_if_index0, sw_if_index1, len0, len1;
+ u8 has_space0 = 0, has_space1 = 0;
+ u8 ver0, ver1;
+
+ /* Prefetch next iteration. */
+ {
+ vlib_buffer_t * p2, * p3;
+
+ p2 = vlib_get_buffer (vm, from[2]);
+ p3 = vlib_get_buffer (vm, from[3]);
+
+ vlib_prefetch_buffer_header (p2, LOAD);
+ vlib_prefetch_buffer_header (p3, LOAD);
+
+ CLIB_PREFETCH (p2->data, 2*CLIB_CACHE_LINE_BYTES, LOAD);
+ CLIB_PREFETCH (p3->data, 2*CLIB_CACHE_LINE_BYTES, LOAD);
+ }
+
+ bi0 = from[0];
+ bi1 = from[1];
+ to_next[0] = bi0;
+ to_next[1] = bi1;
+ from += 2;
+ to_next += 2;
+ n_left_to_next -= 2;
+ n_left_from -= 2;
+
+ b0 = vlib_get_buffer (vm, bi0);
+ b1 = vlib_get_buffer (vm, bi1);
+
+ /* udp leaves current_data pointing at the gtpu header */
+ gtpu0 = vlib_buffer_get_current (b0);
+ gtpu1 = vlib_buffer_get_current (b1);
+
+ len0 = vlib_buffer_length_in_chain (vm, b0);
+ len1 = vlib_buffer_length_in_chain (vm, b1);
+
+ tunnel_index0 = ~0;
+ error0 = 0;
+
+ tunnel_index1 = ~0;
+ error1 = 0;
+
+ ip_err0 = gtpu_check_ip (b0, len0);
+ udp_err0 = gtpu_check_ip_udp_len (b0);
+ ip_err1 = gtpu_check_ip (b1, len1);
+ udp_err1 = gtpu_check_ip_udp_len (b1);
+
+ if (PREDICT_FALSE (gtpu_local_need_csum_check (b0)))
+ csum_err0 = !gtpu_validate_udp_csum (vm, b0);
+ else
+ csum_err0 = !gtpu_local_csum_is_valid (b0);
+ if (PREDICT_FALSE (gtpu_local_need_csum_check (b1)))
+ csum_err1 = !gtpu_validate_udp_csum (vm, b1);
+ else
+ csum_err1 = !gtpu_local_csum_is_valid (b1);
+
+ if (ip_err0 || udp_err0 || csum_err0)
+ {
+ next0 = GTPU_INPUT_NEXT_DROP;
+ error0 = gtpu_err_code (ip_err0, udp_err0, csum_err0);
+ goto trace0;
+ }
+
+ /* speculatively load gtp header version field */
+ ver0 = gtpu0->ver_flags;
+
+ /*
+ * Manipulate gtpu header
+ * TBD: Manipulate Sequence Number and N-PDU Number
+ * TBD: Manipulate Next Extension Header
+ */
+ gtpu_hdr_len0 = sizeof(gtpu_header_t) - (((ver0 & GTPU_E_S_PN_BIT) == 0) * 4);
+
+ has_space0 = vlib_buffer_has_space (b0, gtpu_hdr_len0);
+ if (PREDICT_FALSE (((ver0 & GTPU_VER_MASK) != GTPU_V1_VER) | (!has_space0)))
+ {
+ error0 = has_space0 ? GTPU_ERROR_BAD_VER : GTPU_ERROR_TOO_SMALL;
+ next0 = GTPU_INPUT_NEXT_DROP;
+ goto trace0;
+ }
+
+ /* Manipulate packet 0 */
+ ASSERT (b0->flow_id != 0);
+ tunnel_index0 = b0->flow_id - gtm->flow_id_start;
+ t0 = pool_elt_at_index (gtm->tunnels, tunnel_index0);
+ b0->flow_id = 0;
+
+ /* Pop gtpu header */
+ vlib_buffer_advance (b0, gtpu_hdr_len0);
+
+ next0 = GTPU_INPUT_NEXT_IP4_INPUT;
+ sw_if_index0 = t0->sw_if_index;
+
+ /* Set packet input sw_if_index to unicast GTPU tunnel for learning */
+ vnet_buffer(b0)->sw_if_index[VLIB_RX] = sw_if_index0;
+
+ pkts_decapsulated ++;
+ stats_n_packets += 1;
+ stats_n_bytes += len0;
+
+ /* Batch stats increment on the same gtpu tunnel so counter
+ is not incremented per packet */
+ if (PREDICT_FALSE (sw_if_index0 != stats_sw_if_index))
+ {
+ stats_n_packets -= 1;
+ stats_n_bytes -= len0;
+ if (stats_n_packets)
+ vlib_increment_combined_counter
+ (im->combined_sw_if_counters + VNET_INTERFACE_COUNTER_RX,
+ thread_index, stats_sw_if_index,
+ stats_n_packets, stats_n_bytes);
+ stats_n_packets = 1;
+ stats_n_bytes = len0;
+ stats_sw_if_index = sw_if_index0;
+ }
+
+trace0:
+ b0->error = error0 ? node->errors[error0] : 0;
+
+ if (PREDICT_FALSE(b0->flags & VLIB_BUFFER_IS_TRACED))
+ {
+ gtpu_rx_trace_t *tr
+ = vlib_add_trace (vm, node, b0, sizeof (*tr));
+ tr->next_index = next0;
+ tr->error = error0;
+ tr->tunnel_index = tunnel_index0;
+ tr->teid = has_space0 ? clib_net_to_host_u32(gtpu0->teid) : ~0;
+ }
+
+ if (ip_err1 || udp_err1 || csum_err1)
+ {
+ next1 = GTPU_INPUT_NEXT_DROP;
+ error1 = gtpu_err_code (ip_err1, udp_err1, csum_err1);
+ goto trace1;
+ }
+
+ /* speculatively load gtp header version field */
+ ver1 = gtpu1->ver_flags;
+
+ /*
+ * Manipulate gtpu header
+ * TBD: Manipulate Sequence Number and N-PDU Number
+ * TBD: Manipulate Next Extension Header
+ */
+ gtpu_hdr_len1 = sizeof(gtpu_header_t) - (((ver1 & GTPU_E_S_PN_BIT) == 0) * 4);
+ has_space1 = vlib_buffer_has_space (b1, gtpu_hdr_len1);
+ if (PREDICT_FALSE (((ver1 & GTPU_VER_MASK) != GTPU_V1_VER) | (!has_space1)))
+ {
+ error1 = has_space1 ? GTPU_ERROR_BAD_VER : GTPU_ERROR_TOO_SMALL;
+ next1 = GTPU_INPUT_NEXT_DROP;
+ goto trace1;
+ }
+
+ /* Manipulate packet 1 */
+ ASSERT (b1->flow_id != 0);
+ tunnel_index1 = b1->flow_id - gtm->flow_id_start;
+ t1 = pool_elt_at_index (gtm->tunnels, tunnel_index1);
+ b1->flow_id = 0;
+
+ /* Pop gtpu header */
+ vlib_buffer_advance (b1, gtpu_hdr_len1);
+
+ next1 = GTPU_INPUT_NEXT_IP4_INPUT;
+ sw_if_index1 = t1->sw_if_index;
+
+ /* Required to make the l2 tag push / pop code work on l2 subifs */
+ /* This won't happen in current implementation as only
+ ipv4/udp/gtpu/IPV4 type packets can be matched */
+ if (PREDICT_FALSE(next1 == GTPU_INPUT_NEXT_L2_INPUT))
+ vnet_update_l2_len (b1);
+
+ /* Set packet input sw_if_index to unicast GTPU tunnel for learning */
+ vnet_buffer(b1)->sw_if_index[VLIB_RX] = sw_if_index1;
+
+ pkts_decapsulated ++;
+ stats_n_packets += 1;
+ stats_n_bytes += len1;
+
+ /* Batch stats increment on the same gtpu tunnel so counter
+ is not incremented per packet */
+ if (PREDICT_FALSE (sw_if_index1 != stats_sw_if_index))
+ {
+ stats_n_packets -= 1;
+ stats_n_bytes -= len1;
+ if (stats_n_packets)
+ vlib_increment_combined_counter
+ (im->combined_sw_if_counters + VNET_INTERFACE_COUNTER_RX,
+ thread_index, stats_sw_if_index,
+ stats_n_packets, stats_n_bytes);
+ stats_n_packets = 1;
+ stats_n_bytes = len1;
+ stats_sw_if_index = sw_if_index1;
+ }
+
+trace1:
+ b1->error = error1 ? node->errors[error1] : 0;
+
+ if (PREDICT_FALSE(b1->flags & VLIB_BUFFER_IS_TRACED))
+ {
+ gtpu_rx_trace_t *tr
+ = vlib_add_trace (vm, node, b1, sizeof (*tr));
+ tr->next_index = next1;
+ tr->error = error1;
+ tr->tunnel_index = tunnel_index1;
+ tr->teid = has_space1 ? clib_net_to_host_u32(gtpu1->teid) : ~0;
+ }
+
+ vlib_validate_buffer_enqueue_x2 (vm, node, next_index,
+ to_next, n_left_to_next,
+ bi0, bi1, next0, next1);
+ }
+
+ while (n_left_from > 0 && n_left_to_next > 0)
+ {
+ u32 bi0;
+ vlib_buffer_t * b0;
+ u32 next0;
+ gtpu_header_t * gtpu0;
+ u32 gtpu_hdr_len0;
+ u32 error0;
+ u32 tunnel_index0;
+ gtpu_tunnel_t * t0;
+ u32 sw_if_index0, len0;
+ u8 has_space0 = 0;
+ u8 ver0;
+
+ 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);
+ len0 = vlib_buffer_length_in_chain (vm, b0);
+
+ tunnel_index0 = ~0;
+ error0 = 0;
+
+ ip_err0 = gtpu_check_ip (b0, len0);
+ udp_err0 = gtpu_check_ip_udp_len (b0);
+ if (PREDICT_FALSE (gtpu_local_need_csum_check (b0)))
+ csum_err0 = !gtpu_validate_udp_csum (vm, b0);
+ else
+ csum_err0 = !gtpu_local_csum_is_valid (b0);
+
+ if (ip_err0 || udp_err0 || csum_err0)
+ {
+ next0 = GTPU_INPUT_NEXT_DROP;
+ error0 = gtpu_err_code (ip_err0, udp_err0, csum_err0);
+ goto trace00;
+ }
+
+ /* udp leaves current_data pointing at the gtpu header */
+ gtpu0 = vlib_buffer_get_current (b0);
+
+ /* speculatively load gtp header version field */
+ ver0 = gtpu0->ver_flags;
+
+ /*
+ * Manipulate gtpu header
+ * TBD: Manipulate Sequence Number and N-PDU Number
+ * TBD: Manipulate Next Extension Header
+ */
+ gtpu_hdr_len0 = sizeof(gtpu_header_t) - (((ver0 & GTPU_E_S_PN_BIT) == 0) * 4);
+
+ has_space0 = vlib_buffer_has_space (b0, gtpu_hdr_len0);
+ if (PREDICT_FALSE (((ver0 & GTPU_VER_MASK) != GTPU_V1_VER) | (!has_space0)))
+ {
+ error0 = has_space0 ? GTPU_ERROR_BAD_VER : GTPU_ERROR_TOO_SMALL;
+ next0 = GTPU_INPUT_NEXT_DROP;
+ goto trace00;
+ }
+
+ ASSERT (b0->flow_id != 0);
+ tunnel_index0 = b0->flow_id - gtm->flow_id_start;
+ t0 = pool_elt_at_index (gtm->tunnels, tunnel_index0);
+ b0->flow_id = 0;
+
+ /* Pop gtpu header */
+ vlib_buffer_advance (b0, gtpu_hdr_len0);
+
+ next0 = GTPU_INPUT_NEXT_IP4_INPUT;
+ sw_if_index0 = t0->sw_if_index;
+
+ /* Set packet input sw_if_index to unicast GTPU tunnel for learning */
+ vnet_buffer(b0)->sw_if_index[VLIB_RX] = sw_if_index0;
+
+ pkts_decapsulated ++;
+ stats_n_packets += 1;
+ stats_n_bytes += len0;
+
+ /* Batch stats increment on the same gtpu tunnel so counter
+ is not incremented per packet */
+ if (PREDICT_FALSE (sw_if_index0 != stats_sw_if_index))
+ {
+ stats_n_packets -= 1;
+ stats_n_bytes -= len0;
+ if (stats_n_packets)
+ vlib_increment_combined_counter
+ (im->combined_sw_if_counters + VNET_INTERFACE_COUNTER_RX,
+ thread_index, stats_sw_if_index,
+ stats_n_packets, stats_n_bytes);
+ stats_n_packets = 1;
+ stats_n_bytes = len0;
+ stats_sw_if_index = sw_if_index0;
+ }
+ trace00:
+ b0->error = error0 ? node->errors[error0] : 0;
+
+ if (PREDICT_FALSE(b0->flags & VLIB_BUFFER_IS_TRACED))
+ {
+ gtpu_rx_trace_t *tr
+ = vlib_add_trace (vm, node, b0, sizeof (*tr));
+ tr->next_index = next0;
+ tr->error = error0;
+ tr->tunnel_index = tunnel_index0;
+ tr->teid = has_space0 ? clib_net_to_host_u32(gtpu0->teid) : ~0;
+ }
+ vlib_validate_buffer_enqueue_x1 (vm, node, next_index,
+ to_next, n_left_to_next,
+ bi0, next0);
+ }
+
+ vlib_put_next_frame (vm, node, next_index, n_left_to_next);
+ }
+
+ /* Do we still need this now that tunnel tx stats is kept? */
+ vlib_node_increment_counter (vm, gtpu4_flow_input_node.index,
+ GTPU_ERROR_DECAPSULATED,
+ pkts_decapsulated);
+
+ /* Increment any remaining batch stats */
+ if (stats_n_packets)
+ {
+ vlib_increment_combined_counter
+ (im->combined_sw_if_counters + VNET_INTERFACE_COUNTER_RX,
+ thread_index, stats_sw_if_index, stats_n_packets, stats_n_bytes);
+ node->runtime_data[0] = stats_sw_if_index;
+ }
+
+ return from_frame->n_vectors;
+}
+
+VLIB_NODE_FN (gtpu4_flow_input_node) (vlib_main_t * vm,
+ vlib_node_runtime_t * node,
+ vlib_frame_t * from_frame)
+{
+ return gtpu_flow_input(vm, node, from_frame);
+}
+
+
+/* *INDENT-OFF* */
+#ifndef CLIB_MULTIARCH_VARIANT
+VLIB_REGISTER_NODE (gtpu4_flow_input_node) = {
+ .name = "gtpu4-flow-input",
+ .type = VLIB_NODE_TYPE_INTERNAL,
+ .vector_size = sizeof (u32),
+
+ .format_trace = format_gtpu_rx_trace,
+
+ .n_errors = GTPU_FLOW_N_ERROR,
+ .error_strings = gtpu_flow_error_strings,
+
+ .n_next_nodes = GTPU_INPUT_N_NEXT,
+ .next_nodes = {
+#define _(s,n) [GTPU_INPUT_NEXT_##s] = n,
+ foreach_gtpu_input_next
+#undef _
+
+ },
+};
+#endif
+/* *INDENT-ON* */
+
+#endif /* CLIB_MARCH_VARIANT */
Code Review / vpp.git / blobdiff