#include <vnet/vnet.h>
#include <vnet/ip/ip.h>
+#include <vnet/ip/ip_frag.h>
#include <vnet/ip/ip6_neighbor.h>
#include <vnet/ethernet/ethernet.h> /* for ethernet_header_t */
#include <vnet/srp/srp.h> /* for srp_hw_interface_class */
vec_elt (im->fib_index_by_sw_if_index, sw_if_index));
vec_add1 (addr_fib, ip6_af);
+ /* *INDENT-OFF* */
+ if (!is_del)
+ {
+ /* When adding an address check that it does not conflict
+ with an existing address on any interface in this table. */
+ ip_interface_address_t *ia;
+ vnet_sw_interface_t *sif;
+
+ pool_foreach(sif, vnm->interface_main.sw_interfaces,
+ ({
+ if (im->fib_index_by_sw_if_index[sw_if_index] ==
+ im->fib_index_by_sw_if_index[sif->sw_if_index])
+ {
+ foreach_ip_interface_address
+ (&im->lookup_main, ia, sif->sw_if_index,
+ 0 /* honor unnumbered */ ,
+ ({
+ ip6_address_t * x =
+ ip_interface_address_get_address
+ (&im->lookup_main, ia);
+ if (ip6_destination_matches_route
+ (im, address, x, ia->address_length) ||
+ ip6_destination_matches_route (im,
+ x,
+ address,
+ address_length))
+ {
+ vnm->api_errno = VNET_API_ERROR_DUPLICATE_IF_ADDRESS;
+ return
+ clib_error_create
+ ("failed to add %U which conflicts with %U for interface %U",
+ format_ip6_address_and_length, address,
+ address_length,
+ format_ip6_address_and_length, x,
+ ia->address_length,
+ format_vnet_sw_if_index_name, vnm,
+ sif->sw_if_index);
+ }
+ }));
+ }
+ }));
+ }
+ /* *INDENT-ON* */
+
{
uword elts_before = pool_elts (lm->if_address_pool);
? IP6_ERROR_SRC_LOOKUP_MISS : error1);
}
- /* TODO maybe move to lookup? */
- vnet_buffer (p0)->ip.fib_index =
- vec_elt (im->fib_index_by_sw_if_index,
- vnet_buffer (p0)->sw_if_index[VLIB_RX]);
vnet_buffer (p0)->ip.fib_index =
- (vnet_buffer (p0)->sw_if_index[VLIB_TX] ==
- (u32) ~ 0) ? vnet_buffer (p0)->ip.
- fib_index : vnet_buffer (p0)->sw_if_index[VLIB_TX];
+ vnet_buffer (p0)->sw_if_index[VLIB_TX] != ~0 ?
+ vnet_buffer (p0)->sw_if_index[VLIB_TX] :
+ vnet_buffer (p0)->ip.fib_index;
vnet_buffer (p1)->ip.fib_index =
- vec_elt (im->fib_index_by_sw_if_index,
- vnet_buffer (p1)->sw_if_index[VLIB_RX]);
- vnet_buffer (p1)->ip.fib_index =
- (vnet_buffer (p1)->sw_if_index[VLIB_TX] ==
- (u32) ~ 0) ? vnet_buffer (p1)->ip.
- fib_index : vnet_buffer (p1)->sw_if_index[VLIB_TX];
-
+ vnet_buffer (p1)->sw_if_index[VLIB_TX] != ~0 ?
+ vnet_buffer (p1)->sw_if_index[VLIB_TX] :
+ vnet_buffer (p1)->ip.fib_index;
skip_checks:
}
vnet_buffer (p0)->ip.fib_index =
- vec_elt (im->fib_index_by_sw_if_index,
- vnet_buffer (p0)->sw_if_index[VLIB_RX]);
- vnet_buffer (p0)->ip.fib_index =
- (vnet_buffer (p0)->sw_if_index[VLIB_TX] ==
- (u32) ~ 0) ? vnet_buffer (p0)->ip.
- fib_index : vnet_buffer (p0)->sw_if_index[VLIB_TX];
+ vnet_buffer (p0)->sw_if_index[VLIB_TX] != ~0 ?
+ vnet_buffer (p0)->sw_if_index[VLIB_TX] :
+ vnet_buffer (p0)->ip.fib_index;
skip_check:
{
IP6_REWRITE_NEXT_DROP,
IP6_REWRITE_NEXT_ICMP_ERROR,
+ IP6_REWRITE_NEXT_FRAGMENT,
+ IP6_REWRITE_N_NEXT /* Last */
} ip6_rewrite_next_t;
/**
*/
#define IP6_MCAST_ADDR_MASK 0xffffffff
+always_inline void
+ip6_mtu_check (vlib_buffer_t * b, u16 packet_bytes,
+ u16 adj_packet_bytes, bool is_locally_generated,
+ u32 * next, u32 * error)
+{
+ if (adj_packet_bytes >= 1280 && packet_bytes > adj_packet_bytes)
+ {
+ if (is_locally_generated)
+ {
+ /* IP fragmentation */
+ ip_frag_set_vnet_buffer (b, 0, adj_packet_bytes,
+ IP6_FRAG_NEXT_IP6_LOOKUP, 0);
+ *next = IP6_REWRITE_NEXT_FRAGMENT;
+ }
+ else
+ {
+ *error = IP6_ERROR_MTU_EXCEEDED;
+ icmp6_error_set_vnet_buffer (b, ICMP6_packet_too_big, 0,
+ adj_packet_bytes);
+ *next = IP6_REWRITE_NEXT_ICMP_ERROR;
+ }
+ }
+}
+
always_inline uword
ip6_rewrite_inline (vlib_main_t * vm,
vlib_node_runtime_t * node,
u32 pi0, rw_len0, next0, error0, adj_index0;
u32 pi1, rw_len1, next1, error1, adj_index1;
u32 tx_sw_if_index0, tx_sw_if_index1;
+ bool is_locally_originated0, is_locally_originated1;
/* Prefetch next iteration. */
{
error0 = error1 = IP6_ERROR_NONE;
next0 = next1 = IP6_REWRITE_NEXT_DROP;
- if (PREDICT_TRUE (!(p0->flags & VNET_BUFFER_F_LOCALLY_ORIGINATED)))
+ is_locally_originated0 =
+ p0->flags & VNET_BUFFER_F_LOCALLY_ORIGINATED;
+ if (PREDICT_TRUE (!is_locally_originated0))
{
i32 hop_limit0 = ip0->hop_limit;
{
p0->flags &= ~VNET_BUFFER_F_LOCALLY_ORIGINATED;
}
- if (PREDICT_TRUE (!(p1->flags & VNET_BUFFER_F_LOCALLY_ORIGINATED)))
+ is_locally_originated1 =
+ p1->flags & VNET_BUFFER_F_LOCALLY_ORIGINATED;
+ if (PREDICT_TRUE (!is_locally_originated1))
{
i32 hop_limit1 = ip1->hop_limit;
}
/* Check MTU of outgoing interface. */
- error0 =
- (vlib_buffer_length_in_chain (vm, p0) >
- adj0[0].
- rewrite_header.max_l3_packet_bytes ? IP6_ERROR_MTU_EXCEEDED :
- error0);
- error1 =
- (vlib_buffer_length_in_chain (vm, p1) >
- adj1[0].
- rewrite_header.max_l3_packet_bytes ? IP6_ERROR_MTU_EXCEEDED :
- error1);
+ ip6_mtu_check (p0, clib_net_to_host_u16 (ip0->payload_length) +
+ sizeof (ip6_header_t),
+ adj0[0].rewrite_header.max_l3_packet_bytes,
+ is_locally_originated0, &next0, &error0);
+ ip6_mtu_check (p1, clib_net_to_host_u16 (ip1->payload_length) +
+ sizeof (ip6_header_t),
+ adj1[0].rewrite_header.max_l3_packet_bytes,
+ is_locally_originated1, &next1, &error1);
/* Don't adjust the buffer for hop count issue; icmp-error node
* wants to see the IP headerr */
u32 pi0, rw_len0;
u32 adj_index0, next0, error0;
u32 tx_sw_if_index0;
+ bool is_locally_originated0;
pi0 = to_next[0] = from[0];
next0 = IP6_REWRITE_NEXT_DROP;
/* Check hop limit */
- if (PREDICT_TRUE (!(p0->flags & VNET_BUFFER_F_LOCALLY_ORIGINATED)))
+ is_locally_originated0 =
+ p0->flags & VNET_BUFFER_F_LOCALLY_ORIGINATED;
+ if (PREDICT_TRUE (!is_locally_originated0))
{
i32 hop_limit0 = ip0->hop_limit;
}
/* Check MTU of outgoing interface. */
- error0 =
- (vlib_buffer_length_in_chain (vm, p0) >
- adj0[0].
- rewrite_header.max_l3_packet_bytes ? IP6_ERROR_MTU_EXCEEDED :
- error0);
+ ip6_mtu_check (p0, clib_net_to_host_u16 (ip0->payload_length) +
+ sizeof (ip6_header_t),
+ adj0[0].rewrite_header.max_l3_packet_bytes,
+ is_locally_originated0, &next0, &error0);
/* Don't adjust the buffer for hop count issue; icmp-error node
- * wants to see the IP headerr */
+ * wants to see the IP header */
if (PREDICT_TRUE (error0 == IP6_ERROR_NONE))
{
p0->current_data -= rw_len0;
.name = "ip6-rewrite",
.vector_size = sizeof (u32),
.format_trace = format_ip6_rewrite_trace,
- .n_next_nodes = 2,
+ .n_next_nodes = IP6_REWRITE_N_NEXT,
.next_nodes =
{
[IP6_REWRITE_NEXT_DROP] = "ip6-drop",
[IP6_REWRITE_NEXT_ICMP_ERROR] = "ip6-icmp-error",
+ [IP6_REWRITE_NEXT_FRAGMENT] = "ip6-frag",
},
};
/* *INDENT-ON* */