#include <vnet/vnet.h>
#include <vnet/plugin/plugin.h>
#include <acl/acl.h>
-#include <acl/l2sess.h>
#include <vnet/l2/l2_classify.h>
#include <vnet/classify/input_acl.h>
#include <acl/acl_all_api_h.h>
#undef vl_api_version
-#include "node_in.h"
-#include "node_out.h"
#include "fa_node.h"
acl_main_t acl_main;
}
-static void *
-get_ptr_to_offset (vlib_buffer_t * b0, int offset)
-{
- u8 *p = vlib_buffer_get_current (b0) + offset;
- return p;
-}
-
-static u8
-acl_get_l4_proto (vlib_buffer_t * b0, int node_is_ip6)
-{
- u8 proto;
- int proto_offset;
- if (node_is_ip6)
- {
- proto_offset = 20;
- }
- else
- {
- proto_offset = 23;
- }
- proto = *((u8 *) vlib_buffer_get_current (b0) + proto_offset);
- return proto;
-}
-
-static int
-acl_match_addr (ip46_address_t * addr1, ip46_address_t * addr2, int prefixlen,
- int is_ip6)
-{
- if (prefixlen == 0)
- {
- /* match any always succeeds */
- return 1;
- }
- if (is_ip6)
- {
- if (memcmp (addr1, addr2, prefixlen / 8))
- {
- /* If the starting full bytes do not match, no point in bittwidling the thumbs further */
- return 0;
- }
- if (prefixlen % 8)
- {
- u8 b1 = *((u8 *) addr1 + 1 + prefixlen / 8);
- u8 b2 = *((u8 *) addr2 + 1 + prefixlen / 8);
- u8 mask0 = (0xff - ((1 << (8 - (prefixlen % 8))) - 1));
- return (b1 & mask0) == b2;
- }
- else
- {
- /* The prefix fits into integer number of bytes, so nothing left to do */
- return 1;
- }
- }
- else
- {
- uint32_t a1 = ntohl (addr1->ip4.as_u32);
- uint32_t a2 = ntohl (addr2->ip4.as_u32);
- uint32_t mask0 = 0xffffffff - ((1 << (32 - prefixlen)) - 1);
- return (a1 & mask0) == a2;
- }
-}
-
-static int
-acl_match_port (u16 port, u16 port_first, u16 port_last, int is_ip6)
-{
- return ((port >= port_first) && (port <= port_last));
-}
-
-static int
-acl_packet_match (acl_main_t * am, u32 acl_index, vlib_buffer_t * b0,
- u8 * r_action, int *r_is_ip6, u32 * r_acl_match_p,
- u32 * r_rule_match_p, u32 * trace_bitmap)
-{
- ethernet_header_t *h0;
- u16 type0;
-
- ip46_address_t src, dst;
- int is_ip6;
- int is_ip4;
- u8 proto;
- u16 src_port = 0;
- u16 dst_port = 0;
- u8 tcp_flags = 0;
- int i;
- acl_list_t *a;
- acl_rule_t *r;
-
- h0 = vlib_buffer_get_current (b0);
- type0 = clib_net_to_host_u16 (h0->type);
- is_ip4 = (type0 == ETHERNET_TYPE_IP4);
- is_ip6 = (type0 == ETHERNET_TYPE_IP6);
-
- if (!(is_ip4 || is_ip6))
- {
- return 0;
- }
- /* The bunch of hardcoded offsets here is intentional to get rid of them
- ASAP, when getting to a faster matching code */
- if (is_ip4)
- {
- clib_memcpy (&src.ip4, get_ptr_to_offset (b0, 26), 4);
- clib_memcpy (&dst.ip4, get_ptr_to_offset (b0, 30), 4);
- proto = acl_get_l4_proto (b0, 0);
- if (1 == proto)
- {
- *trace_bitmap |= 0x00000001;
- /* type */
- src_port = ((u16) (*(u8 *) get_ptr_to_offset (b0, 34)));
- /* code */
- dst_port = ((u16) (*(u8 *) get_ptr_to_offset (b0, 35)));
- } else {
- /* assume TCP/UDP */
- src_port = ntohs ((u16) (*(u16 *) get_ptr_to_offset (b0, 34)));
- dst_port = ntohs ((u16) (*(u16 *) get_ptr_to_offset (b0, 36)));
- /* UDP gets ability to check on an oddball data byte as a bonus */
- tcp_flags = *(u8 *) get_ptr_to_offset (b0, 14 + 20 + 13);
- }
- }
- else /* is_ipv6 implicitly */
- {
- clib_memcpy (&src, get_ptr_to_offset (b0, 22), 16);
- clib_memcpy (&dst, get_ptr_to_offset (b0, 38), 16);
- proto = acl_get_l4_proto (b0, 1);
- if (58 == proto)
- {
- *trace_bitmap |= 0x00000002;
- /* type */
- src_port = (u16) (*(u8 *) get_ptr_to_offset (b0, 54));
- /* code */
- dst_port = (u16) (*(u8 *) get_ptr_to_offset (b0, 55));
- }
- else
- {
- /* assume TCP/UDP */
- src_port = ntohs ((u16) (*(u16 *) get_ptr_to_offset (b0, 54)));
- dst_port = ntohs ((u16) (*(u16 *) get_ptr_to_offset (b0, 56)));
- tcp_flags = *(u8 *) get_ptr_to_offset (b0, 14 + 40 + 13);
- }
- }
- if (pool_is_free_index (am->acls, acl_index))
- {
- if (r_acl_match_p)
- *r_acl_match_p = acl_index;
- if (r_rule_match_p)
- *r_rule_match_p = -1;
- /* the ACL does not exist but is used for policy. Block traffic. */
- return 0;
- }
- a = am->acls + acl_index;
- for (i = 0; i < a->count; i++)
- {
- r = a->rules + i;
- if (is_ip6 != r->is_ipv6)
- {
- continue;
- }
- if (!acl_match_addr (&dst, &r->dst, r->dst_prefixlen, is_ip6))
- continue;
- if (!acl_match_addr (&src, &r->src, r->src_prefixlen, is_ip6))
- continue;
- if (r->proto)
- {
- if (proto != r->proto)
- continue;
- if (!acl_match_port
- (src_port, r->src_port_or_type_first, r->src_port_or_type_last,
- is_ip6))
- continue;
- if (!acl_match_port
- (dst_port, r->dst_port_or_code_first, r->dst_port_or_code_last,
- is_ip6))
- continue;
- /* No need for check of proto == TCP, since in other rules both fields should be zero, so this match will succeed */
- if ((tcp_flags & r->tcp_flags_mask) != r->tcp_flags_value)
- continue;
- }
- /* everything matches! */
- *r_action = r->is_permit;
- *r_is_ip6 = is_ip6;
- if (r_acl_match_p)
- *r_acl_match_p = acl_index;
- if (r_rule_match_p)
- *r_rule_match_p = i;
- return 1;
- }
- return 0;
-}
-
-void
-input_acl_packet_match (u32 sw_if_index, vlib_buffer_t * b0, u32 * nextp,
- u32 * acl_match_p, u32 * rule_match_p,
- u32 * trace_bitmap)
-{
- acl_main_t *am = &acl_main;
- uint8_t action = 0;
- int is_ip6 = 0;
- int i;
- vec_validate (am->input_acl_vec_by_sw_if_index, sw_if_index);
- for (i = 0; i < vec_len (am->input_acl_vec_by_sw_if_index[sw_if_index]);
- i++)
- {
- if (acl_packet_match
- (am, am->input_acl_vec_by_sw_if_index[sw_if_index][i], b0, &action,
- &is_ip6, acl_match_p, rule_match_p, trace_bitmap))
- {
- if (is_ip6)
- {
- *nextp = am->acl_in_ip6_match_next[action];
- }
- else
- {
- *nextp = am->acl_in_ip4_match_next[action];
- }
- return;
- }
- }
- if (vec_len (am->input_acl_vec_by_sw_if_index[sw_if_index]) > 0)
- {
- /* If there are ACLs and none matched, deny by default */
- *nextp = 0;
- }
-
-}
-
-void
-output_acl_packet_match (u32 sw_if_index, vlib_buffer_t * b0, u32 * nextp,
- u32 * acl_match_p, u32 * rule_match_p,
- u32 * trace_bitmap)
-{
- acl_main_t *am = &acl_main;
- uint8_t action = 0;
- int is_ip6 = 0;
- int i;
- vec_validate (am->output_acl_vec_by_sw_if_index, sw_if_index);
- for (i = 0; i < vec_len (am->output_acl_vec_by_sw_if_index[sw_if_index]);
- i++)
- {
- if (acl_packet_match
- (am, am->output_acl_vec_by_sw_if_index[sw_if_index][i], b0, &action,
- &is_ip6, acl_match_p, rule_match_p, trace_bitmap))
- {
- if (is_ip6)
- {
- *nextp = am->acl_out_ip6_match_next[action];
- }
- else
- {
- *nextp = am->acl_out_ip4_match_next[action];
- }
- return;
- }
- }
- if (vec_len (am->output_acl_vec_by_sw_if_index[sw_if_index]) > 0)
- {
- /* If there are ACLs and none matched, deny by default */
- *nextp = 0;
- }
-}
-
typedef struct
{
u8 is_ipv6;
#undef _
}
-u32
-register_match_action_nexts (u32 next_in_ip4, u32 next_in_ip6,
- u32 next_out_ip4, u32 next_out_ip6)
-{
- acl_main_t *am = &acl_main;
- if (am->n_match_actions == 255)
- {
- return ~0;
- }
- u32 act = am->n_match_actions;
- am->n_match_actions++;
- am->acl_in_ip4_match_next[act] = next_in_ip4;
- am->acl_in_ip6_match_next[act] = next_in_ip6;
- am->acl_out_ip4_match_next[act] = next_out_ip4;
- am->acl_out_ip6_match_next[act] = next_out_ip6;
- return act;
-}
-
-void
-acl_setup_nodes (void)
-{
- vlib_main_t *vm = vlib_get_main ();
- acl_main_t *am = &acl_main;
- vlib_node_t *n;
-
- n = vlib_get_node_by_name (vm, (u8 *) "l2-input-classify");
- am->l2_input_classify_next_acl_old =
- vlib_node_add_next_with_slot (vm, n->index, acl_in_node.index, ~0);
- n = vlib_get_node_by_name (vm, (u8 *) "l2-output-classify");
- am->l2_output_classify_next_acl_old =
- vlib_node_add_next_with_slot (vm, n->index, acl_out_node.index, ~0);
-
- feat_bitmap_init_next_nodes (vm, acl_in_node.index, L2INPUT_N_FEAT,
- l2input_get_feat_names (),
- am->acl_in_node_feat_next_node_index);
-
- feat_bitmap_init_next_nodes (vm, acl_out_node.index, L2OUTPUT_N_FEAT,
- l2output_get_feat_names (),
- am->acl_out_node_feat_next_node_index);
-
- memset (&am->acl_in_ip4_match_next[0], 0,
- sizeof (am->acl_in_ip4_match_next));
- memset (&am->acl_in_ip6_match_next[0], 0,
- sizeof (am->acl_in_ip6_match_next));
- memset (&am->acl_out_ip4_match_next[0], 0,
- sizeof (am->acl_out_ip4_match_next));
- memset (&am->acl_out_ip6_match_next[0], 0,
- sizeof (am->acl_out_ip6_match_next));
- am->n_match_actions = 0;
-
- am->l2_input_classify_next_acl_ip4 = am->l2_input_classify_next_acl_old;
- am->l2_input_classify_next_acl_ip6 = am->l2_input_classify_next_acl_old;
- am->l2_output_classify_next_acl_ip4 = am->l2_output_classify_next_acl_old;
- am->l2_output_classify_next_acl_ip6 = am->l2_output_classify_next_acl_old;
-
- register_match_action_nexts (0, 0, 0, 0); /* drop */
- register_match_action_nexts (~0, ~0, ~0, ~0); /* permit */
- register_match_action_nexts (ACL_IN_L2S_INPUT_IP4_ADD, ACL_IN_L2S_INPUT_IP6_ADD, ACL_OUT_L2S_OUTPUT_IP4_ADD, ACL_OUT_L2S_OUTPUT_IP6_ADD); /* permit + create session */
-}
-
-void
+static void
acl_setup_fa_nodes (void)
{
vlib_main_t *vm = vlib_get_main ();
n6 = vlib_get_node_by_name (vm, (u8 *) "acl-plugin-in-ip6-l2");
- am->fa_l2_input_classify_next_acl_ip4 =
+ am->l2_input_classify_next_acl_ip4 =
vlib_node_add_next_with_slot (vm, n->index, n4->index, ~0);
- am->fa_l2_input_classify_next_acl_ip6 =
+ am->l2_input_classify_next_acl_ip6 =
vlib_node_add_next_with_slot (vm, n->index, n6->index, ~0);
feat_bitmap_init_next_nodes (vm, n4->index, L2INPUT_N_FEAT,
n4 = vlib_get_node_by_name (vm, (u8 *) "acl-plugin-out-ip4-l2");
n6 = vlib_get_node_by_name (vm, (u8 *) "acl-plugin-out-ip6-l2");
- am->fa_l2_output_classify_next_acl_ip4 =
+ am->l2_output_classify_next_acl_ip4 =
vlib_node_add_next_with_slot (vm, n->index, n4->index, ~0);
- am->fa_l2_output_classify_next_acl_ip6 =
+ am->l2_output_classify_next_acl_ip6 =
vlib_node_add_next_with_slot (vm, n->index, n6->index, ~0);
feat_bitmap_init_next_nodes (vm, n4->index, L2OUTPUT_N_FEAT,
feat_bitmap_init_next_nodes (vm, n6->index, L2OUTPUT_N_FEAT,
l2output_get_feat_names (),
am->fa_acl_out_ip6_l2_node_feat_next_node_index);
-
- am->l2_input_classify_next_acl_ip4 = am->fa_l2_input_classify_next_acl_ip4;
- am->l2_input_classify_next_acl_ip6 = am->fa_l2_input_classify_next_acl_ip6;
- am->l2_output_classify_next_acl_ip4 = am->fa_l2_output_classify_next_acl_ip4;
- am->l2_output_classify_next_acl_ip6 = am->fa_l2_output_classify_next_acl_ip6;
-
}
-void
+static void
acl_set_timeout_sec(int timeout_type, u32 value)
{
acl_main_t *am = &acl_main;
- l2sess_main_t *sm = &l2sess_main;
clib_time_t *ct = &am->vlib_main->clib_time;
if (timeout_type < ACL_N_TIMEOUTS) {
clib_warning("Unknown timeout type %d", timeout_type);
return;
}
-
- switch(timeout_type) {
- case ACL_TIMEOUT_UDP_IDLE:
- sm->udp_session_idle_timeout = (u64)(((f64)value)/ct->seconds_per_clock);
- break;
- case ACL_TIMEOUT_TCP_IDLE:
- sm->tcp_session_idle_timeout = (u64)(((f64)value)/ct->seconds_per_clock);
- break;
- case ACL_TIMEOUT_TCP_TRANSIENT:
- sm->tcp_session_transient_timeout = (u64)(((f64)value)/ct->seconds_per_clock);
- break;
- default:
- clib_warning("Unknown timeout type %d", timeout_type);
- }
+ am->session_timeout[timeout_type] = (u64)(((f64)value)/ct->seconds_per_clock);
}
-void
+static void
acl_set_session_max_entries(u32 value)
{
acl_main_t *am = &acl_main;
am->fa_conn_table_max_entries = value;
}
-int
+static int
acl_set_skip_ipv6_eh(u32 eh, u32 value)
{
acl_main_t *am = &acl_main;
uword memory_size = 0;
acl_main_t *am = &acl_main;
- /* The new datapath is the default. This command exists out of precaution and for comparing the two */
- if (unformat (input, "l2-datapath")) {
- if (unformat(input, "old")) {
- am->l2_input_classify_next_acl_ip4 = am->l2_input_classify_next_acl_old;
- am->l2_input_classify_next_acl_ip6 = am->l2_input_classify_next_acl_old;
- am->l2_output_classify_next_acl_ip4 = am->l2_output_classify_next_acl_old;
- am->l2_output_classify_next_acl_ip6 = am->l2_output_classify_next_acl_old;
- goto done;
- }
- if (unformat(input, "new")) {
- am->l2_input_classify_next_acl_ip4 = am->fa_l2_input_classify_next_acl_ip4;
- am->l2_input_classify_next_acl_ip6 = am->fa_l2_input_classify_next_acl_ip6;
- am->l2_output_classify_next_acl_ip4 = am->fa_l2_output_classify_next_acl_ip4;
- am->l2_output_classify_next_acl_ip6 = am->fa_l2_output_classify_next_acl_ip6;
- goto done;
- }
- goto done;
- }
if (unformat (input, "skip-ipv6-extension-header %u %u", &eh_val, &val)) {
if(!acl_set_skip_ipv6_eh(eh_val, val)) {
error = clib_error_return(0, "expecting eh=0..255, value=0..1");
VL_MSG_FIRST_AVAILABLE);
error = acl_plugin_api_hookup (vm);
- acl_setup_nodes ();
/* Add our API messages to the global name_crc hash table */
setup_message_id_table (am, &api_main);
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