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-rw-r--r--src/vnet/ip/icmp6.h3
-rwxr-xr-xsrc/vnet/ip/ip6_neighbor.c67
-rw-r--r--src/vnet/srp/node.c36
3 files changed, 72 insertions, 34 deletions
diff --git a/src/vnet/ip/icmp6.h b/src/vnet/ip/icmp6.h
index 1cac8240466..628d225eac4 100644
--- a/src/vnet/ip/icmp6.h
+++ b/src/vnet/ip/icmp6.h
@@ -46,7 +46,8 @@
_ (PACKET_TOO_BIG_SENT, "packet too big response sent") \
_ (TTL_EXPIRE_SENT, "hop limit exceeded response sent") \
_ (PARAM_PROBLEM_SENT, "parameter problem response sent") \
- _ (DROP, "error message dropped")
+ _ (DROP, "error message dropped") \
+ _ (ALLOC_FAILURE, "buffer allocation failure")
typedef enum
diff --git a/src/vnet/ip/ip6_neighbor.c b/src/vnet/ip/ip6_neighbor.c
index f9acfeff389..fde3a7e71d4 100755
--- a/src/vnet/ip/ip6_neighbor.c
+++ b/src/vnet/ip/ip6_neighbor.c
@@ -1690,11 +1690,15 @@ icmp6_router_solicitation (vlib_main_t * vm,
u16 payload_length =
sizeof (icmp6_router_advertisement_header_t);
- vlib_buffer_add_data (vm,
- vlib_buffer_get_free_list_index
- (p0), bi0, (void *) &rh,
- sizeof
- (icmp6_router_advertisement_header_t));
+ if (vlib_buffer_add_data
+ (vm, vlib_buffer_get_free_list_index
+ (p0), &bi0, (void *) &rh,
+ sizeof (icmp6_router_advertisement_header_t)))
+ {
+ /* buffer allocation failed, drop the pkt */
+ error0 = ICMP6_ERROR_ALLOC_FAILURE;
+ goto drop0;
+ }
if (radv_info->adv_link_layer_address)
{
@@ -1709,11 +1713,15 @@ icmp6_router_solicitation (vlib_main_t * vm,
clib_memcpy (&h.ethernet_address[0],
eth_if0->address, 6);
- vlib_buffer_add_data (vm,
- vlib_buffer_get_free_list_index
- (p0), bi0, (void *) &h,
- sizeof
- (icmp6_neighbor_discovery_ethernet_link_layer_address_option_t));
+ if (vlib_buffer_add_data
+ (vm, vlib_buffer_get_free_list_index
+ (p0), &bi0, (void *) &h,
+ sizeof
+ (icmp6_neighbor_discovery_ethernet_link_layer_address_option_t)))
+ {
+ error0 = ICMP6_ERROR_ALLOC_FAILURE;
+ goto drop0;
+ }
payload_length +=
sizeof
@@ -1734,11 +1742,15 @@ icmp6_router_solicitation (vlib_main_t * vm,
payload_length +=
sizeof (icmp6_neighbor_discovery_mtu_option_t);
- vlib_buffer_add_data (vm,
- vlib_buffer_get_free_list_index
- (p0), bi0, (void *) &h,
- sizeof
- (icmp6_neighbor_discovery_mtu_option_t));
+ if (vlib_buffer_add_data
+ (vm, vlib_buffer_get_free_list_index
+ (p0), &bi0, (void *) &h,
+ sizeof
+ (icmp6_neighbor_discovery_mtu_option_t)))
+ {
+ error0 = ICMP6_ERROR_ALLOC_FAILURE;
+ goto drop0;
+ }
}
/* add advertised prefix options */
@@ -1787,10 +1799,15 @@ icmp6_router_solicitation (vlib_main_t * vm,
payload_length += sizeof( icmp6_neighbor_discovery_prefix_information_option_t);
- vlib_buffer_add_data (vm,
- vlib_buffer_get_free_list_index (p0),
- bi0,
- (void *)&h, sizeof(icmp6_neighbor_discovery_prefix_information_option_t));
+ if (vlib_buffer_add_data
+ (vm, vlib_buffer_get_free_list_index (p0),
+ &bi0,
+ (void *)&h,
+ sizeof(icmp6_neighbor_discovery_prefix_information_option_t)))
+ {
+ error0 = ICMP6_ERROR_ALLOC_FAILURE;
+ goto drop0;
+ }
}
}));
@@ -1875,6 +1892,7 @@ icmp6_router_solicitation (vlib_main_t * vm,
}
}
+ drop0:
p0->error = error_node->errors[error0];
if (error0 != ICMP6_ERROR_NONE)
@@ -2761,6 +2779,7 @@ ip6_neighbor_send_mldpv2_report (u32 sw_if_index)
n_allocated = vlib_buffer_alloc (vm, &bo0, n_to_alloc);
if (PREDICT_FALSE (n_allocated == 0))
{
+ alloc_fail:
clib_warning ("buffer allocation failure");
return;
}
@@ -2827,9 +2846,13 @@ ip6_neighbor_send_mldpv2_report (u32 sw_if_index)
num_addr_records++;
- vlib_buffer_add_data
- (vm, vlib_buffer_get_free_list_index (b0), bo0,
- (void *)&rr, sizeof(icmp6_multicast_address_record_t));
+ if(vlib_buffer_add_data
+ (vm, vlib_buffer_get_free_list_index (b0), &bo0,
+ (void *)&rr, sizeof(icmp6_multicast_address_record_t)))
+ {
+ vlib_buffer_free (vm, &bo0, 1);
+ goto alloc_fail;
+ }
payload_length += sizeof( icmp6_multicast_address_record_t);
}));
diff --git a/src/vnet/srp/node.c b/src/vnet/srp/node.c
index cec014f987d..cf9bd31c513 100644
--- a/src/vnet/srp/node.c
+++ b/src/vnet/srp/node.c
@@ -328,16 +328,24 @@ srp_topology_packet (vlib_main_t * vm, u32 sw_if_index, u8 ** contents)
vec_len (*contents) - STRUCT_OFFSET_OF (srp_generic_control_header_t, control)));
{
- vlib_frame_t * f = vlib_get_frame_to_node (vm, hi->output_node_index);
+ vlib_frame_t * f;
vlib_buffer_t * b;
- u32 * to_next = vlib_frame_vector_args (f);
- u32 bi;
-
- bi = vlib_buffer_add_data (vm, VLIB_BUFFER_DEFAULT_FREE_LIST_INDEX,
- /* buffer to append to */ ~0,
- *contents, vec_len (*contents));
+ u32 * to_next;
+ u32 bi = ~0;
+
+ if (vlib_buffer_add_data (vm, VLIB_BUFFER_DEFAULT_FREE_LIST_INDEX,
+ /* buffer to append to */ &bi,
+ *contents, vec_len (*contents)))
+ {
+ /* complete or partial buffer allocation failure */
+ if (bi != ~0)
+ vlib_buffer_free (vm, &bi, 1);
+ return SRP_ERROR_CONTROL_PACKETS_PROCESSED;
+ }
b = vlib_get_buffer (vm, bi);
vnet_buffer (b)->sw_if_index[VLIB_RX] = vnet_buffer (b)->sw_if_index[VLIB_TX] = sw_if_index;
+ f = vlib_get_frame_to_node (vm, hi->output_node_index);
+ to_next = vlib_frame_vector_args (f);
to_next[0] = bi;
f->n_vectors = 1;
vlib_put_frame_to_node (vm, hi->output_node_index, f);
@@ -609,7 +617,7 @@ static void tx_ips_packet (srp_interface_t * si,
vnet_hw_interface_t * hi = vnet_get_hw_interface (vnm, si->rings[tx_ring].hw_if_index);
vlib_frame_t * f;
vlib_buffer_t * b;
- u32 * to_next, bi;
+ u32 * to_next, bi = ~0;
if (! vnet_sw_interface_is_admin_up (vnm, hi->sw_if_index))
return;
@@ -620,9 +628,15 @@ static void tx_ips_packet (srp_interface_t * si,
= ~ip_csum_fold (ip_incremental_checksum (0, &i->control,
sizeof (i[0]) - STRUCT_OFFSET_OF (srp_ips_header_t, control)));
- bi = vlib_buffer_add_data (vm, VLIB_BUFFER_DEFAULT_FREE_LIST_INDEX,
- /* buffer to append to */ ~0,
- i, sizeof (i[0]));
+ if (vlib_buffer_add_data (vm, VLIB_BUFFER_DEFAULT_FREE_LIST_INDEX,
+ /* buffer to append to */ &bi,
+ i, sizeof (i[0])))
+ {
+ /* complete or partial allocation failure */
+ if (bi != ~0)
+ vlib_buffer_free (vm, &bi, 1);
+ return;
+ }
/* FIXME trace. */
if (0)