/*
* Check that rte_lpm_add fails gracefully for incorrect user input arguments
*/
int32_t
test3(void)
{
struct rte_lpm *lpm = NULL;
uint32_t ip = IPv4(0, 0, 0, 0);
uint8_t depth = 24, next_hop = 100;
int32_t status = 0;
/* rte_lpm_add: lpm == NULL */
status = rte_lpm_add(NULL, ip, depth, next_hop);
TEST_LPM_ASSERT(status < 0);
/*Create vaild lpm to use in rest of test. */
lpm = rte_lpm_create(__func__, SOCKET_ID_ANY, MAX_RULES, 0);
TEST_LPM_ASSERT(lpm != NULL);
/* rte_lpm_add: depth < 1 */
status = rte_lpm_add(lpm, ip, 0, next_hop);
TEST_LPM_ASSERT(status < 0);
/* rte_lpm_add: depth > MAX_DEPTH */
status = rte_lpm_add(lpm, ip, (MAX_DEPTH + 1), next_hop);
TEST_LPM_ASSERT(status < 0);
rte_lpm_free(lpm);
return PASS;
}
/*
* Add two rules, lookup to hit the more specific one, lookup to hit the less
* specific one delete the less specific rule and lookup previous values again;
* add a more specific rule than the existing rule, lookup again
*
* */
int32_t
test11(void)
{
struct rte_lpm *lpm = NULL;
uint32_t ip;
uint8_t depth, next_hop_add, next_hop_return;
int32_t status = 0;
lpm = rte_lpm_create(__func__, SOCKET_ID_ANY, MAX_RULES, 0);
TEST_LPM_ASSERT(lpm != NULL);
ip = IPv4(128, 0, 0, 0);
depth = 24;
next_hop_add = 100;
status = rte_lpm_add(lpm, ip, depth, next_hop_add);
TEST_LPM_ASSERT(status == 0);
ip = IPv4(128, 0, 0, 10);
depth = 32;
next_hop_add = 101;
status = rte_lpm_add(lpm, ip, depth, next_hop_add);
TEST_LPM_ASSERT(status == 0);
status = rte_lpm_lookup(lpm, ip, &next_hop_return);
TEST_LPM_ASSERT((status == 0) && (next_hop_return == next_hop_add));
ip = IPv4(128, 0, 0, 0);
next_hop_add = 100;
status = rte_lpm_lookup(lpm, ip, &next_hop_return);
TEST_LPM_ASSERT((status == 0) && (next_hop_return == next_hop_add));
ip = IPv4(128, 0, 0, 0);
depth = 24;
status = rte_lpm_delete(lpm, ip, depth);
TEST_LPM_ASSERT(status == 0);
status = rte_lpm_lookup(lpm, ip, &next_hop_return);
TEST_LPM_ASSERT(status == -ENOENT);
ip = IPv4(128, 0, 0, 10);
depth = 32;
status = rte_lpm_delete(lpm, ip, depth);
TEST_LPM_ASSERT(status == 0);
status = rte_lpm_lookup(lpm, ip, &next_hop_return);
TEST_LPM_ASSERT(status == -ENOENT);
rte_lpm_free(lpm);
return PASS;
}
int
control_add_ipv4_local_entry(struct in_addr* nexthop,
struct in_addr* saddr,
uint8_t depth,
uint32_t port_id,
int32_t socket_id)
{
int s;
uint16_t nexthop_id;
s = neighbor4_lookup_nexthop(neighbor4_struct[socket_id], nexthop,
&nexthop_id);
if (s < 0) {
s = neighbor4_add_nexthop(neighbor4_struct[socket_id], nexthop,
&nexthop_id, NEI_ACTION_KNI);
if (s < 0) {
RTE_LOG(
ERR, PKTJ_CTRL1,
"failed to add a nexthop during route adding...\n");
return -1;
}
}
neighbor4_set_port(neighbor4_struct[socket_id], nexthop_id, port_id);
s = rte_lpm_add(ipv4_pktj_lookup_struct[socket_id],
rte_be_to_cpu_32(saddr->s_addr), depth, nexthop_id);
if (s < 0) {
RTE_LOG(
ERR, PKTJ_CTRL1,
"failed to add a route in lpm during route adding...\n");
return -1;
}
neighbor4_refcount_incr(neighbor4_struct[socket_id], nexthop_id);
return nexthop_id;
}
static void
app_init_lpm_tables(void)
{
unsigned socket, lcore;
/* Init the LPM tables */
for (socket = 0; socket < APP_MAX_SOCKETS; socket ++) {
char name[32];
uint32_t rule;
if (app_is_socket_used(socket) == 0) {
continue;
}
struct rte_lpm_config lpm_config;
lpm_config.max_rules = APP_MAX_LPM_RULES;
lpm_config.number_tbl8s = 256;
lpm_config.flags = 0;
snprintf(name, sizeof(name), "lpm_table_%u", socket);
printf("Creating the LPM table for socket %u ...\n", socket);
app.lpm_tables[socket] = rte_lpm_create(
name,
socket,
&lpm_config);
if (app.lpm_tables[socket] == NULL) {
rte_panic("Unable to create LPM table on socket %u\n", socket);
}
for (rule = 0; rule < app.n_lpm_rules; rule ++) {
int ret;
ret = rte_lpm_add(app.lpm_tables[socket],
app.lpm_rules[rule].ip,
app.lpm_rules[rule].depth,
app.lpm_rules[rule].if_out);
if (ret < 0) {
rte_panic("Unable to add entry %u (%x/%u => %u) to the LPM table on socket %u (%d)\n",
(unsigned) rule,
(unsigned) app.lpm_rules[rule].ip,
(unsigned) app.lpm_rules[rule].depth,
(unsigned) app.lpm_rules[rule].if_out,
socket,
ret);
}
}
}
for (lcore = 0; lcore < APP_MAX_LCORES; lcore ++) {
if (app.lcore_params[lcore].type != e_APP_LCORE_WORKER) {
continue;
}
socket = rte_lcore_to_socket_id(lcore);
app.lcore_params[lcore].worker.lpm_table = app.lpm_tables[socket];
}
}
void
rt_init(struct socket_ctx *ctx, int socket_id, unsigned ep)
{
char name[PATH_MAX];
unsigned i;
int ret;
struct rte_lpm *lpm;
struct ipv4_route *rt;
char a, b, c, d;
unsigned nb_routes;
struct rte_lpm_config conf = { 0 };
if (ctx == NULL)
rte_exit(EXIT_FAILURE, "NULL context.\n");
if (ctx->rt_ipv4 != NULL)
rte_exit(EXIT_FAILURE, "Routing Table for socket %u already "
"initialized\n", socket_id);
printf("Creating Routing Table (RT) context with %u max routes\n",
RT_IPV4_MAX_RULES);
if (ep == 0) {
rt = rt_ipv4_ep0;
nb_routes = RTE_DIM(rt_ipv4_ep0);
} else if (ep == 1) {
rt = rt_ipv4_ep1;
nb_routes = RTE_DIM(rt_ipv4_ep1);
} else
rte_exit(EXIT_FAILURE, "Invalid EP value %u. Only 0 or 1 "
"supported.\n", ep);
/* create the LPM table */
snprintf(name, sizeof(name), "%s_%u", "rt_ipv4", socket_id);
conf.max_rules = RT_IPV4_MAX_RULES;
conf.number_tbl8s = RTE_LPM_TBL8_NUM_ENTRIES;
lpm = rte_lpm_create(name, socket_id, &conf);
if (lpm == NULL)
rte_exit(EXIT_FAILURE, "Unable to create LPM table "
"on socket %d\n", socket_id);
/* populate the LPM table */
for (i = 0; i < nb_routes; i++) {
ret = rte_lpm_add(lpm, rt[i].ip, rt[i].depth, rt[i].if_out);
if (ret < 0)
rte_exit(EXIT_FAILURE, "Unable to add entry num %u to "
"LPM table on socket %d\n", i, socket_id);
uint32_t_to_char(rt[i].ip, &a, &b, &c, &d);
printf("LPM: Adding route %hhu.%hhu.%hhu.%hhu/%hhu (%hhu)\n",
a, b, c, d, rt[i].depth, rt[i].if_out);
}
ctx->rt_ipv4 = (struct rt_ctx *)lpm;
}
/*
* Fore TBL8 extension exhaustion. Add 256 rules that require a tbl8 extension.
* No more tbl8 extensions will be allowed. Now add one more rule that required
* a tbl8 extension and get fail.
* */
int32_t
test14(void)
{
/* We only use depth = 32 in the loop below so we must make sure
* that we have enough storage for all rules at that depth*/
struct rte_lpm *lpm = NULL;
uint32_t ip;
uint8_t depth, next_hop_add, next_hop_return;
int32_t status = 0;
/* Add enough space for 256 rules for every depth */
lpm = rte_lpm_create(__func__, SOCKET_ID_ANY, 256 * 32, 0);
TEST_LPM_ASSERT(lpm != NULL);
depth = 32;
next_hop_add = 100;
ip = IPv4(0, 0, 0, 0);
/* Add 256 rules that require a tbl8 extension */
for (; ip <= IPv4(0, 0, 255, 0); ip += 256) {
status = rte_lpm_add(lpm, ip, depth, next_hop_add);
TEST_LPM_ASSERT(status == 0);
status = rte_lpm_lookup(lpm, ip, &next_hop_return);
TEST_LPM_ASSERT((status == 0) &&
(next_hop_return == next_hop_add));
}
/* All tbl8 extensions have been used above. Try to add one more and
* we get a fail */
ip = IPv4(1, 0, 0, 0);
depth = 32;
status = rte_lpm_add(lpm, ip, depth, next_hop_add);
TEST_LPM_ASSERT(status < 0);
rte_lpm_free(lpm);
return PASS;
}
int lpm_entry_add(unsigned int ip, int depth, int next_hop, int socketid) {
int ret = -1;
/* populate the LPM table */
ret = rte_lpm_add(ipv4_l3fwd_lpm_lookup_struct[socketid],
ip,
depth,
next_hop);
if (ret < 0) {
rte_exit(EXIT_FAILURE, "Unable to add entry to the l3fwd LPM table on socket %d\n", socketid);
}
printf("LPM: Adding route 0x%08x / %d (%d)\n",
(unsigned)ip,
depth,
next_hop);
return 1;
}
int32_t
test12(void)
{
__m128i ipx4;
uint16_t hop[4];
struct rte_lpm *lpm = NULL;
uint32_t ip, i;
uint8_t depth, next_hop_add, next_hop_return;
int32_t status = 0;
lpm = rte_lpm_create(__func__, SOCKET_ID_ANY, MAX_RULES, 0);
TEST_LPM_ASSERT(lpm != NULL);
ip = IPv4(128, 0, 0, 0);
depth = 32;
next_hop_add = 100;
for (i = 0; i < 1000; i++) {
status = rte_lpm_add(lpm, ip, depth, next_hop_add);
TEST_LPM_ASSERT(status == 0);
status = rte_lpm_lookup(lpm, ip, &next_hop_return);
TEST_LPM_ASSERT((status == 0) &&
(next_hop_return == next_hop_add));
ipx4 = _mm_set_epi32(ip, ip + 1, ip, ip - 1);
rte_lpm_lookupx4(lpm, ipx4, hop, UINT16_MAX);
TEST_LPM_ASSERT(hop[0] == UINT16_MAX);
TEST_LPM_ASSERT(hop[1] == next_hop_add);
TEST_LPM_ASSERT(hop[2] == UINT16_MAX);
TEST_LPM_ASSERT(hop[3] == next_hop_add);
status = rte_lpm_delete(lpm, ip, depth);
TEST_LPM_ASSERT(status == 0);
status = rte_lpm_lookup(lpm, ip, &next_hop_return);
TEST_LPM_ASSERT(status == -ENOENT);
}
rte_lpm_free(lpm);
return PASS;
}
/*
* test failure condition of overloading the tbl8 so no more will fit
* Check we get an error return value in that case
*/
int32_t
test16(void)
{
uint32_t ip;
struct rte_lpm *lpm = rte_lpm_create(__func__, SOCKET_ID_ANY,
256 * 32, 0);
/* ip loops through all possibilities for top 24 bits of address */
for (ip = 0; ip < 0xFFFFFF; ip++){
/* add an entry within a different tbl8 each time, since
* depth >24 and the top 24 bits are different */
if (rte_lpm_add(lpm, (ip << 8) + 0xF0, 30, 0) < 0)
break;
}
if (ip != RTE_LPM_TBL8_NUM_GROUPS) {
printf("Error, unexpected failure with filling tbl8 groups\n");
printf("Failed after %u additions, expected after %u\n",
(unsigned)ip, (unsigned)RTE_LPM_TBL8_NUM_GROUPS);
}
rte_lpm_free(lpm);
return 0;
}
/*
* - Add rule that covers a TBL24 range previously invalid & lookup (& delete &
* lookup)
* - Add rule that extends a TBL24 invalid entry & lookup (& delete & lookup)
* - Add rule that extends a TBL24 valid entry & lookup for both rules (&
* delete & lookup)
* - Add rule that updates the next hop in TBL24 & lookup (& delete & lookup)
* - Add rule that updates the next hop in TBL8 & lookup (& delete & lookup)
* - Delete a rule that is not present in the TBL24 & lookup
* - Delete a rule that is not present in the TBL8 & lookup
*
*/
int32_t
test10(void)
{
struct rte_lpm *lpm = NULL;
uint32_t ip;
uint8_t depth, next_hop_add, next_hop_return;
int32_t status = 0;
/* Add rule that covers a TBL24 range previously invalid & lookup
* (& delete & lookup) */
lpm = rte_lpm_create(__func__, SOCKET_ID_ANY, MAX_RULES, RTE_LPM_HEAP);
TEST_LPM_ASSERT(lpm != NULL);
ip = IPv4(128, 0, 0, 0);
depth = 16;
next_hop_add = 100;
status = rte_lpm_add(lpm, ip, depth, next_hop_add);
TEST_LPM_ASSERT(status == 0);
status = rte_lpm_lookup(lpm, ip, &next_hop_return);
TEST_LPM_ASSERT((status == 0) && (next_hop_return == next_hop_add));
status = rte_lpm_delete(lpm, ip, depth);
TEST_LPM_ASSERT(status == 0);
status = rte_lpm_lookup(lpm, ip, &next_hop_return);
TEST_LPM_ASSERT(status == -ENOENT);
rte_lpm_delete_all(lpm);
ip = IPv4(128, 0, 0, 0);
depth = 25;
next_hop_add = 100;
status = rte_lpm_add(lpm, ip, depth, next_hop_add);
TEST_LPM_ASSERT(status == 0);
status = rte_lpm_lookup(lpm, ip, &next_hop_return);
TEST_LPM_ASSERT((status == 0) && (next_hop_return == next_hop_add));
status = rte_lpm_delete(lpm, ip, depth);
TEST_LPM_ASSERT(status == 0);
rte_lpm_delete_all(lpm);
/* Add rule that extends a TBL24 valid entry & lookup for both rules
* (& delete & lookup) */
ip = IPv4(128, 0, 0, 0);
depth = 24;
next_hop_add = 100;
status = rte_lpm_add(lpm, ip, depth, next_hop_add);
TEST_LPM_ASSERT(status == 0);
ip = IPv4(128, 0, 0, 10);
depth = 32;
next_hop_add = 101;
status = rte_lpm_add(lpm, ip, depth, next_hop_add);
TEST_LPM_ASSERT(status == 0);
status = rte_lpm_lookup(lpm, ip, &next_hop_return);
TEST_LPM_ASSERT((status == 0) && (next_hop_return == next_hop_add));
ip = IPv4(128, 0, 0, 0);
next_hop_add = 100;
status = rte_lpm_lookup(lpm, ip, &next_hop_return);
TEST_LPM_ASSERT((status == 0) && (next_hop_return == next_hop_add));
ip = IPv4(128, 0, 0, 0);
depth = 24;
status = rte_lpm_delete(lpm, ip, depth);
TEST_LPM_ASSERT(status == 0);
status = rte_lpm_lookup(lpm, ip, &next_hop_return);
TEST_LPM_ASSERT(status == -ENOENT);
ip = IPv4(128, 0, 0, 10);
depth = 32;
status = rte_lpm_delete(lpm, ip, depth);
TEST_LPM_ASSERT(status == 0);
status = rte_lpm_lookup(lpm, ip, &next_hop_return);
TEST_LPM_ASSERT(status == -ENOENT);
rte_lpm_delete_all(lpm);
/* Add rule that updates the next hop in TBL24 & lookup
* (& delete & lookup) */
ip = IPv4(128, 0, 0, 0);
depth = 24;
next_hop_add = 100;
status = rte_lpm_add(lpm, ip, depth, next_hop_add);
TEST_LPM_ASSERT(status == 0);
status = rte_lpm_lookup(lpm, ip, &next_hop_return);
TEST_LPM_ASSERT((status == 0) && (next_hop_return == next_hop_add));
next_hop_add = 101;
status = rte_lpm_add(lpm, ip, depth, next_hop_add);
TEST_LPM_ASSERT(status == 0);
status = rte_lpm_lookup(lpm, ip, &next_hop_return);
TEST_LPM_ASSERT((status == 0) && (next_hop_return == next_hop_add));
status = rte_lpm_delete(lpm, ip, depth);
TEST_LPM_ASSERT(status == 0);
status = rte_lpm_lookup(lpm, ip, &next_hop_return);
TEST_LPM_ASSERT(status == -ENOENT);
rte_lpm_delete_all(lpm);
/* Add rule that updates the next hop in TBL8 & lookup
* (& delete & lookup) */
ip = IPv4(128, 0, 0, 0);
depth = 32;
next_hop_add = 100;
status = rte_lpm_add(lpm, ip, depth, next_hop_add);
TEST_LPM_ASSERT(status == 0);
status = rte_lpm_lookup(lpm, ip, &next_hop_return);
TEST_LPM_ASSERT((status == 0) && (next_hop_return == next_hop_add));
next_hop_add = 101;
status = rte_lpm_add(lpm, ip, depth, next_hop_add);
TEST_LPM_ASSERT(status == 0);
status = rte_lpm_lookup(lpm, ip, &next_hop_return);
TEST_LPM_ASSERT((status == 0) && (next_hop_return == next_hop_add));
status = rte_lpm_delete(lpm, ip, depth);
TEST_LPM_ASSERT(status == 0);
status = rte_lpm_lookup(lpm, ip, &next_hop_return);
TEST_LPM_ASSERT(status == -ENOENT);
rte_lpm_delete_all(lpm);
/* Delete a rule that is not present in the TBL24 & lookup */
ip = IPv4(128, 0, 0, 0);
depth = 24;
status = rte_lpm_delete(lpm, ip, depth);
TEST_LPM_ASSERT(status < 0);
status = rte_lpm_lookup(lpm, ip, &next_hop_return);
TEST_LPM_ASSERT(status == -ENOENT);
rte_lpm_delete_all(lpm);
/* Delete a rule that is not present in the TBL8 & lookup */
ip = IPv4(128, 0, 0, 0);
depth = 32;
status = rte_lpm_delete(lpm, ip, depth);
TEST_LPM_ASSERT(status < 0);
status = rte_lpm_lookup(lpm, ip, &next_hop_return);
TEST_LPM_ASSERT(status == -ENOENT);
rte_lpm_free(lpm);
return PASS;
}
/*
* - Add & lookup to hit invalid TBL24 entry
* - Add & lookup to hit valid TBL24 entry not extended
* - Add & lookup to hit valid extended TBL24 entry with invalid TBL8 entry
* - Add & lookup to hit valid extended TBL24 entry with valid TBL8 entry
*
*/
int32_t
test9(void)
{
struct rte_lpm *lpm = NULL;
uint32_t ip, ip_1, ip_2;
uint8_t depth, depth_1, depth_2, next_hop_add, next_hop_add_1,
next_hop_add_2, next_hop_return;
int32_t status = 0;
/* Add & lookup to hit invalid TBL24 entry */
ip = IPv4(128, 0, 0, 0);
depth = 24;
next_hop_add = 100;
lpm = rte_lpm_create(__func__, SOCKET_ID_ANY, MAX_RULES, 0);
TEST_LPM_ASSERT(lpm != NULL);
status = rte_lpm_add(lpm, ip, depth, next_hop_add);
TEST_LPM_ASSERT(status == 0);
status = rte_lpm_lookup(lpm, ip, &next_hop_return);
TEST_LPM_ASSERT((status == 0) && (next_hop_return == next_hop_add));
status = rte_lpm_delete(lpm, ip, depth);
TEST_LPM_ASSERT(status == 0);
status = rte_lpm_lookup(lpm, ip, &next_hop_return);
TEST_LPM_ASSERT(status == -ENOENT);
rte_lpm_delete_all(lpm);
/* Add & lookup to hit valid TBL24 entry not extended */
ip = IPv4(128, 0, 0, 0);
depth = 23;
next_hop_add = 100;
status = rte_lpm_add(lpm, ip, depth, next_hop_add);
TEST_LPM_ASSERT(status == 0);
status = rte_lpm_lookup(lpm, ip, &next_hop_return);
TEST_LPM_ASSERT((status == 0) && (next_hop_return == next_hop_add));
depth = 24;
next_hop_add = 101;
status = rte_lpm_add(lpm, ip, depth, next_hop_add);
TEST_LPM_ASSERT(status == 0);
status = rte_lpm_lookup(lpm, ip, &next_hop_return);
TEST_LPM_ASSERT((status == 0) && (next_hop_return == next_hop_add));
depth = 24;
status = rte_lpm_delete(lpm, ip, depth);
TEST_LPM_ASSERT(status == 0);
depth = 23;
status = rte_lpm_delete(lpm, ip, depth);
TEST_LPM_ASSERT(status == 0);
status = rte_lpm_lookup(lpm, ip, &next_hop_return);
TEST_LPM_ASSERT(status == -ENOENT);
rte_lpm_delete_all(lpm);
/* Add & lookup to hit valid extended TBL24 entry with invalid TBL8
* entry */
ip = IPv4(128, 0, 0, 0);
depth = 32;
next_hop_add = 100;
status = rte_lpm_add(lpm, ip, depth, next_hop_add);
TEST_LPM_ASSERT(status == 0);
status = rte_lpm_lookup(lpm, ip, &next_hop_return);
TEST_LPM_ASSERT((status == 0) && (next_hop_return == next_hop_add));
ip = IPv4(128, 0, 0, 5);
depth = 32;
next_hop_add = 101;
status = rte_lpm_add(lpm, ip, depth, next_hop_add);
TEST_LPM_ASSERT(status == 0);
status = rte_lpm_lookup(lpm, ip, &next_hop_return);
TEST_LPM_ASSERT((status == 0) && (next_hop_return == next_hop_add));
status = rte_lpm_delete(lpm, ip, depth);
TEST_LPM_ASSERT(status == 0);
status = rte_lpm_lookup(lpm, ip, &next_hop_return);
TEST_LPM_ASSERT(status == -ENOENT);
ip = IPv4(128, 0, 0, 0);
depth = 32;
next_hop_add = 100;
status = rte_lpm_lookup(lpm, ip, &next_hop_return);
TEST_LPM_ASSERT((status == 0) && (next_hop_return == next_hop_add));
status = rte_lpm_delete(lpm, ip, depth);
TEST_LPM_ASSERT(status == 0);
status = rte_lpm_lookup(lpm, ip, &next_hop_return);
TEST_LPM_ASSERT(status == -ENOENT);
rte_lpm_delete_all(lpm);
/* Add & lookup to hit valid extended TBL24 entry with valid TBL8
* entry */
ip_1 = IPv4(128, 0, 0, 0);
depth_1 = 25;
next_hop_add_1 = 101;
ip_2 = IPv4(128, 0, 0, 5);
depth_2 = 32;
next_hop_add_2 = 102;
next_hop_return = 0;
status = rte_lpm_add(lpm, ip_1, depth_1, next_hop_add_1);
TEST_LPM_ASSERT(status == 0);
status = rte_lpm_lookup(lpm, ip_1, &next_hop_return);
TEST_LPM_ASSERT((status == 0) && (next_hop_return == next_hop_add_1));
status = rte_lpm_add(lpm, ip_2, depth_2, next_hop_add_2);
TEST_LPM_ASSERT(status == 0);
status = rte_lpm_lookup(lpm, ip_2, &next_hop_return);
TEST_LPM_ASSERT((status == 0) && (next_hop_return == next_hop_add_2));
status = rte_lpm_delete(lpm, ip_2, depth_2);
TEST_LPM_ASSERT(status == 0);
status = rte_lpm_lookup(lpm, ip_2, &next_hop_return);
TEST_LPM_ASSERT((status == 0) && (next_hop_return == next_hop_add_1));
status = rte_lpm_delete(lpm, ip_1, depth_1);
TEST_LPM_ASSERT(status == 0);
status = rte_lpm_lookup(lpm, ip_1, &next_hop_return);
TEST_LPM_ASSERT(status == -ENOENT);
rte_lpm_free(lpm);
return PASS;
}
/*
* Use rte_lpm_add to add rules which effect only the second half of the lpm
* table. Use all possible depths ranging from 1..32. Set the next hop = to the
* depth. Check lookup hit for on every add and check for lookup miss on the
* first half of the lpm table after each add. Finally delete all rules going
* backwards (i.e. from depth = 32 ..1) and carry out a lookup after each
* delete. The lookup should return the next_hop_add value related to the
* previous depth value (i.e. depth -1).
*/
int32_t
test8(void)
{
__m128i ipx4;
uint16_t hop[4];
struct rte_lpm *lpm = NULL;
uint32_t ip1 = IPv4(127, 255, 255, 255), ip2 = IPv4(128, 0, 0, 0);
uint8_t depth, next_hop_add, next_hop_return;
int32_t status = 0;
lpm = rte_lpm_create(__func__, SOCKET_ID_ANY, MAX_RULES, 0);
TEST_LPM_ASSERT(lpm != NULL);
/* Loop with rte_lpm_add. */
for (depth = 1; depth <= 32; depth++) {
/* Let the next_hop_add value = depth. Just for change. */
next_hop_add = depth;
status = rte_lpm_add(lpm, ip2, depth, next_hop_add);
TEST_LPM_ASSERT(status == 0);
/* Check IP in first half of tbl24 which should be empty. */
status = rte_lpm_lookup(lpm, ip1, &next_hop_return);
TEST_LPM_ASSERT(status == -ENOENT);
status = rte_lpm_lookup(lpm, ip2, &next_hop_return);
TEST_LPM_ASSERT((status == 0) &&
(next_hop_return == next_hop_add));
ipx4 = _mm_set_epi32(ip2, ip1, ip2, ip1);
rte_lpm_lookupx4(lpm, ipx4, hop, UINT16_MAX);
TEST_LPM_ASSERT(hop[0] == UINT16_MAX);
TEST_LPM_ASSERT(hop[1] == next_hop_add);
TEST_LPM_ASSERT(hop[2] == UINT16_MAX);
TEST_LPM_ASSERT(hop[3] == next_hop_add);
}
/* Loop with rte_lpm_delete. */
for (depth = 32; depth >= 1; depth--) {
next_hop_add = (uint8_t) (depth - 1);
status = rte_lpm_delete(lpm, ip2, depth);
TEST_LPM_ASSERT(status == 0);
status = rte_lpm_lookup(lpm, ip2, &next_hop_return);
if (depth != 1) {
TEST_LPM_ASSERT((status == 0) &&
(next_hop_return == next_hop_add));
}
else {
TEST_LPM_ASSERT(status == -ENOENT);
}
status = rte_lpm_lookup(lpm, ip1, &next_hop_return);
TEST_LPM_ASSERT(status == -ENOENT);
ipx4 = _mm_set_epi32(ip1, ip1, ip2, ip2);
rte_lpm_lookupx4(lpm, ipx4, hop, UINT16_MAX);
if (depth != 1) {
TEST_LPM_ASSERT(hop[0] == next_hop_add);
TEST_LPM_ASSERT(hop[1] == next_hop_add);
} else {
TEST_LPM_ASSERT(hop[0] == UINT16_MAX);
TEST_LPM_ASSERT(hop[1] == UINT16_MAX);
}
TEST_LPM_ASSERT(hop[2] == UINT16_MAX);
TEST_LPM_ASSERT(hop[3] == UINT16_MAX);
}
rte_lpm_free(lpm);
return PASS;
}
/*
* Test for overwriting of tbl8:
* - add rule /32 and lookup
* - add new rule /24 and lookup
* - add third rule /25 and lookup
* - lookup /32 and /24 rule to ensure the table has not been overwritten.
*/
int32_t
test17(void)
{
struct rte_lpm *lpm = NULL;
const uint32_t ip_10_32 = IPv4(10, 10, 10, 2);
const uint32_t ip_10_24 = IPv4(10, 10, 10, 0);
const uint32_t ip_20_25 = IPv4(10, 10, 20, 2);
const uint8_t d_ip_10_32 = 32,
d_ip_10_24 = 24,
d_ip_20_25 = 25;
const uint8_t next_hop_ip_10_32 = 100,
next_hop_ip_10_24 = 105,
next_hop_ip_20_25 = 111;
uint8_t next_hop_return = 0;
int32_t status = 0;
lpm = rte_lpm_create(__func__, SOCKET_ID_ANY, MAX_RULES, 0);
TEST_LPM_ASSERT(lpm != NULL);
if ((status = rte_lpm_add(lpm, ip_10_32, d_ip_10_32,
next_hop_ip_10_32)) < 0)
return -1;
status = rte_lpm_lookup(lpm, ip_10_32, &next_hop_return);
uint8_t test_hop_10_32 = next_hop_return;
TEST_LPM_ASSERT(status == 0);
TEST_LPM_ASSERT(next_hop_return == next_hop_ip_10_32);
if ((status = rte_lpm_add(lpm, ip_10_24, d_ip_10_24,
next_hop_ip_10_24)) < 0)
return -1;
status = rte_lpm_lookup(lpm, ip_10_24, &next_hop_return);
uint8_t test_hop_10_24 = next_hop_return;
TEST_LPM_ASSERT(status == 0);
TEST_LPM_ASSERT(next_hop_return == next_hop_ip_10_24);
if ((status = rte_lpm_add(lpm, ip_20_25, d_ip_20_25,
next_hop_ip_20_25)) < 0)
return -1;
status = rte_lpm_lookup(lpm, ip_20_25, &next_hop_return);
uint8_t test_hop_20_25 = next_hop_return;
TEST_LPM_ASSERT(status == 0);
TEST_LPM_ASSERT(next_hop_return == next_hop_ip_20_25);
if (test_hop_10_32 == test_hop_10_24) {
printf("Next hop return equal\n");
return -1;
}
if (test_hop_10_24 == test_hop_20_25){
printf("Next hop return equal\n");
return -1;
}
status = rte_lpm_lookup(lpm, ip_10_32, &next_hop_return);
TEST_LPM_ASSERT(status == 0);
TEST_LPM_ASSERT(next_hop_return == next_hop_ip_10_32);
status = rte_lpm_lookup(lpm, ip_10_24, &next_hop_return);
TEST_LPM_ASSERT(status == 0);
TEST_LPM_ASSERT(next_hop_return == next_hop_ip_10_24);
rte_lpm_free(lpm);
return PASS;
}
static int
rte_table_lpm_entry_add(
void *table,
void *key,
void *entry,
int *key_found,
void **entry_ptr)
{
struct rte_table_lpm *lpm = (struct rte_table_lpm *) table;
struct rte_table_lpm_key *ip_prefix = (struct rte_table_lpm_key *) key;
uint32_t nht_pos, nht_pos0_valid;
int status;
uint8_t nht_pos0 = 0;
/* Check input parameters */
if (lpm == NULL) {
RTE_LOG(ERR, TABLE, "%s: table parameter is NULL\n", __func__);
return -EINVAL;
}
if (ip_prefix == NULL) {
RTE_LOG(ERR, TABLE, "%s: ip_prefix parameter is NULL\n",
__func__);
return -EINVAL;
}
if (entry == NULL) {
RTE_LOG(ERR, TABLE, "%s: entry parameter is NULL\n", __func__);
return -EINVAL;
}
if ((ip_prefix->depth == 0) || (ip_prefix->depth > 32)) {
RTE_LOG(ERR, TABLE, "%s: invalid depth (%d)\n",
__func__, ip_prefix->depth);
return -EINVAL;
}
/* Check if rule is already present in the table */
status = rte_lpm_is_rule_present(lpm->lpm, ip_prefix->ip,
ip_prefix->depth, &nht_pos0);
nht_pos0_valid = status > 0;
/* Find existing or free NHT entry */
if (nht_find_existing(lpm, entry, &nht_pos) == 0) {
uint8_t *nht_entry;
if (nht_find_free(lpm, &nht_pos) == 0) {
RTE_LOG(ERR, TABLE, "%s: NHT full\n", __func__);
return -1;
}
nht_entry = &lpm->nht[nht_pos * lpm->entry_size];
memcpy(nht_entry, entry, lpm->entry_size);
}
/* Add rule to low level LPM table */
if (rte_lpm_add(lpm->lpm, ip_prefix->ip, ip_prefix->depth,
(uint8_t) nht_pos) < 0) {
RTE_LOG(ERR, TABLE, "%s: LPM rule add failed\n", __func__);
return -1;
}
/* Commit NHT changes */
lpm->nht_users[nht_pos]++;
lpm->nht_users[nht_pos0] -= nht_pos0_valid;
*key_found = nht_pos0_valid;
*entry_ptr = (void *) &lpm->nht[nht_pos * lpm->entry_size];
return 0;
}
static int
neighbor4(neighbor_action_t action,
__s32 port_id,
struct in_addr* addr,
struct ether_addr* lladdr,
__u8 flags,
__rte_unused __u16 vlan_id,
void* args)
{
// if port_id is not handled
// ignore, return immediatly
// if neighbor add
// lookup neighbor
// if exists
// update lladdr, set flag as REACHABLE/STALE/DELAY
// else
// // This should not happen
// insert new nexthop
// set insert date=now, refcount = 0, flag=REACHABLE/STALE/DELAY
// if neighbor delete
// lookup neighbor
// if exists
// if refcount != 0
// set nexthop as invalid
// else
// set flag empty
// else
// do nothing
// // this should not happen
struct control_handle* handle = args;
assert(handle != NULL);
int s;
uint16_t nexthop_id;
uint32_t find_id;
int32_t socket_id = handle->socket_id;
char ipbuf[INET_ADDRSTRLEN];
assert(neighbor4_struct != NULL);
if (addr == NULL)
return -1;
inet_ntop(AF_INET, addr, ipbuf, INET_ADDRSTRLEN);
if (action == NEIGHBOR_ADD) {
if (lladdr == NULL)
return -1;
char ibuf[IFNAMSIZ];
unsigned kni_vlan;
if_indextoname(port_id, ibuf);
s = sscanf(ibuf, "dpdk%10u.%10u", &port_id, &kni_vlan);
if (s <= 0) {
RTE_LOG(ERR, PKTJ_CTRL1,
"received a neighbor "
"announce for an unmanaged "
"iface %s\n",
ibuf);
return -1;
}
s = neighbor4_lookup_nexthop(neighbor4_struct[socket_id], addr,
&nexthop_id);
if (s < 0) {
if (flags != NUD_NONE && flags != NUD_NOARP &&
flags != NUD_STALE) {
RTE_LOG(ERR, PKTJ_CTRL1,
"failed to change state in neighbor4 "
"table (state %d, %s)...\n",
flags, ipbuf);
return -1;
}
{
RTE_LOG(DEBUG, PKTJ_CTRL1,
"adding ipv4 neighbor %s with port %s "
"vlan_id %d...\n",
ipbuf, ibuf, kni_vlan);
}
s = neighbor4_add_nexthop(neighbor4_struct[socket_id],
addr, &nexthop_id,
NEI_ACTION_FWD);
if (s < 0) {
RTE_LOG(ERR, PKTJ_CTRL1,
"failed to add a "
"nexthop in neighbor "
"table...\n");
return -1;
}
if (rte_lpm_lookup(ipv4_pktj_lookup_struct[socket_id],
rte_be_to_cpu_32(addr->s_addr),
&find_id) == 0) {
s = rte_lpm_add(
ipv4_pktj_lookup_struct[socket_id],
rte_be_to_cpu_32(addr->s_addr), 32,
nexthop_id);
if (s < 0) {
lpm4_stats[socket_id].nb_add_ko++;
RTE_LOG(ERR, PKTJ_CTRL1,
"failed to add a route in "
"lpm during neighbor "
"adding...\n");
return -1;
}
lpm4_stats[socket_id].nb_add_ok++;
}
}
if (flags == NUD_FAILED) {
neighbor4_set_action(neighbor4_struct[socket_id],
nexthop_id, NEI_ACTION_KNI);
} else {
neighbor4_set_action(neighbor4_struct[socket_id],
nexthop_id, NEI_ACTION_FWD);
}
RTE_LOG(DEBUG, PKTJ_CTRL1,
"set neighbor4 with port_id %d state %d\n", port_id,
flags);
neighbor4_set_lladdr_port(neighbor4_struct[socket_id],
nexthop_id, &ports_eth_addr[port_id],
lladdr, port_id, kni_vlan);
neighbor4_set_state(neighbor4_struct[socket_id], nexthop_id,
flags);
}
if (action == NEIGHBOR_DELETE) {
if (flags != NUD_FAILED && flags != NUD_STALE) {
RTE_LOG(
DEBUG, PKTJ_CTRL1,
"neighbor4 delete ope failed, bad NUD state: %d \n",
flags);
return -1;
}
RTE_LOG(DEBUG, PKTJ_CTRL1, "deleting ipv4 neighbor...\n");
s = neighbor4_lookup_nexthop(neighbor4_struct[socket_id], addr,
&nexthop_id);
if (s < 0) {
RTE_LOG(ERR, PKTJ_CTRL1,
"failed to find a nexthop to "
"delete in neighbor "
"table...\n");
return 0;
}
neighbor4_delete(neighbor4_struct[socket_id], nexthop_id);
// FIXME not thread safe
if (neighbor4_struct[socket_id]
->entries.t4[nexthop_id]
.neighbor.refcnt == 0) {
s = rte_lpm_delete(ipv4_pktj_lookup_struct[socket_id],
rte_be_to_cpu_32(addr->s_addr), 32);
if (s < 0) {
lpm4_stats[socket_id].nb_del_ko++;
RTE_LOG(ERR, PKTJ_CTRL1,
"failed to delete route...\n");
return -1;
}
lpm4_stats[socket_id].nb_del_ok++;
}
}
RTE_LOG(DEBUG, PKTJ_CTRL1, "neigh %s ope success\n", ipbuf);
return 0;
}
static int
route4(__rte_unused struct rtmsg* route,
route_action_t action,
struct in_addr* addr,
uint8_t depth,
struct in_addr* nexthop,
uint8_t type,
void* args)
{
// If route add
// lookup next hop in neighbor table ipv4
// if not lookup
// create next hop, with flag invalid and addr = nexthop
// nexthopid = last id
//
// register new route in lpm, with nexthop id
// increment refcount in neighbor
// If route delete
// lookup next hop in neighbor table ipv4
// if not lookup
// then WTF TABLE CORRUPTED
// remove route from lpm
// decrement refcount in neighbor
// if refcount reached 0
// then flag entry empty
struct control_handle* handle = args;
assert(handle != NULL);
uint16_t nexthop_id;
int s;
int32_t socket_id = handle->socket_id;
struct in_addr blackhole_addr4 = {rte_be_to_cpu_32(INADDR_ANY)};
if (type == RTN_BLACKHOLE) {
nexthop = &blackhole_addr4;
}
if (action == ROUTE_ADD) {
RTE_LOG(DEBUG, PKTJ_CTRL1, "adding an ipv4 route...\n");
// lookup nexthop
s = neighbor4_lookup_nexthop(neighbor4_struct[socket_id],
nexthop, &nexthop_id);
if (s < 0) {
s = neighbor4_add_nexthop(neighbor4_struct[socket_id],
nexthop, &nexthop_id,
NEI_ACTION_FWD);
if (s < 0) {
RTE_LOG(ERR, PKTJ_CTRL1,
"failed to add a "
"nexthop during "
"route adding...\n");
return -1;
}
}
s = rte_lpm_add(ipv4_pktj_lookup_struct[socket_id],
rte_be_to_cpu_32(addr->s_addr), depth,
nexthop_id);
if (s < 0) {
lpm4_stats[socket_id].nb_add_ko++;
RTE_LOG(ERR, PKTJ_CTRL1,
"failed to add a route in "
"lpm during route "
"adding...\n");
return -1;
}
neighbor4_refcount_incr(neighbor4_struct[socket_id],
nexthop_id);
lpm4_stats[socket_id].nb_add_ok++;
}
if (action == ROUTE_DELETE) {
RTE_LOG(DEBUG, PKTJ_CTRL1, "deleting an ipv4 route...\n");
// lookup nexthop
s = neighbor4_lookup_nexthop(neighbor4_struct[socket_id],
nexthop, &nexthop_id);
if (s < 0) {
RTE_LOG(ERR, PKTJ_CTRL1,
"failed to find nexthop "
"during route deletion...\n");
return -1;
}
s = rte_lpm_delete(ipv4_pktj_lookup_struct[socket_id],
rte_be_to_cpu_32(addr->s_addr), depth);
if (s < 0) {
lpm4_stats[socket_id].nb_del_ko++;
RTE_LOG(ERR, PKTJ_CTRL1, "failed to delete route...\n");
return -1;
}
neighbor4_refcount_decr(neighbor4_struct[socket_id],
nexthop_id);
lpm4_stats[socket_id].nb_del_ok++;
}
RTE_LOG(DEBUG, PKTJ_CTRL1, "route ope success\n");
return 0;
}
int32_t
perf_test(void)
{
struct rte_lpm *lpm = NULL;
uint64_t begin, total_time, lpm_used_entries = 0;
unsigned i, j;
uint8_t next_hop_add = 0xAA, next_hop_return = 0;
int status = 0;
uint64_t cache_line_counter = 0;
int64_t count = 0;
rte_srand(rte_rdtsc());
printf("No. routes = %u\n", (unsigned) NUM_ROUTE_ENTRIES);
print_route_distribution(large_route_table, (uint32_t) NUM_ROUTE_ENTRIES);
lpm = rte_lpm_create(__func__, SOCKET_ID_ANY, 1000000, 0);
TEST_LPM_ASSERT(lpm != NULL);
/* Measue add. */
begin = rte_rdtsc();
for (i = 0; i < NUM_ROUTE_ENTRIES; i++) {
if (rte_lpm_add(lpm, large_route_table[i].ip,
large_route_table[i].depth, next_hop_add) == 0)
status++;
}
/* End Timer. */
total_time = rte_rdtsc() - begin;
printf("Unique added entries = %d\n", status);
/* Obtain add statistics. */
for (i = 0; i < RTE_LPM_TBL24_NUM_ENTRIES; i++) {
if (lpm->tbl24[i].valid)
lpm_used_entries++;
if (i % 32 == 0){
if ((uint64_t)count < lpm_used_entries) {
cache_line_counter++;
count = lpm_used_entries;
}
}
}
printf("Used table 24 entries = %u (%g%%)\n",
(unsigned) lpm_used_entries,
(lpm_used_entries * 100.0) / RTE_LPM_TBL24_NUM_ENTRIES);
printf("64 byte Cache entries used = %u (%u bytes)\n",
(unsigned) cache_line_counter, (unsigned) cache_line_counter * 64);
printf("Average LPM Add: %g cycles\n", (double)total_time / NUM_ROUTE_ENTRIES);
/* Measure single Lookup */
total_time = 0;
count = 0;
for (i = 0; i < ITERATIONS; i ++) {
static uint32_t ip_batch[BATCH_SIZE];
for (j = 0; j < BATCH_SIZE; j ++)
ip_batch[j] = rte_rand();
/* Lookup per batch */
begin = rte_rdtsc();
for (j = 0; j < BATCH_SIZE; j ++) {
if (rte_lpm_lookup(lpm, ip_batch[j], &next_hop_return) != 0)
count++;
}
total_time += rte_rdtsc() - begin;
}
printf("Average LPM Lookup: %.1f cycles (fails = %.1f%%)\n",
(double)total_time / ((double)ITERATIONS * BATCH_SIZE),
(count * 100.0) / (double)(ITERATIONS * BATCH_SIZE));
/* Measure bulk Lookup */
total_time = 0;
count = 0;
for (i = 0; i < ITERATIONS; i ++) {
static uint32_t ip_batch[BATCH_SIZE];
uint16_t next_hops[BULK_SIZE];
/* Create array of random IP addresses */
for (j = 0; j < BATCH_SIZE; j ++)
ip_batch[j] = rte_rand();
/* Lookup per batch */
begin = rte_rdtsc();
for (j = 0; j < BATCH_SIZE; j += BULK_SIZE) {
unsigned k;
rte_lpm_lookup_bulk(lpm, &ip_batch[j], next_hops, BULK_SIZE);
for (k = 0; k < BULK_SIZE; k++)
if (unlikely(!(next_hops[k] & RTE_LPM_LOOKUP_SUCCESS)))
count++;
}
total_time += rte_rdtsc() - begin;
}
printf("BULK LPM Lookup: %.1f cycles (fails = %.1f%%)\n",
(double)total_time / ((double)ITERATIONS * BATCH_SIZE),
(count * 100.0) / (double)(ITERATIONS * BATCH_SIZE));
/* Measure LookupX4 */
total_time = 0;
count = 0;
for (i = 0; i < ITERATIONS; i++) {
static uint32_t ip_batch[BATCH_SIZE];
uint16_t next_hops[4];
/* Create array of random IP addresses */
for (j = 0; j < BATCH_SIZE; j++)
ip_batch[j] = rte_rand();
/* Lookup per batch */
begin = rte_rdtsc();
for (j = 0; j < BATCH_SIZE; j += RTE_DIM(next_hops)) {
unsigned k;
__m128i ipx4;
ipx4 = _mm_loadu_si128((__m128i *)(ip_batch + j));
ipx4 = *(__m128i *)(ip_batch + j);
rte_lpm_lookupx4(lpm, ipx4, next_hops, UINT16_MAX);
for (k = 0; k < RTE_DIM(next_hops); k++)
if (unlikely(next_hops[k] == UINT16_MAX))
count++;
}
total_time += rte_rdtsc() - begin;
}
printf("LPM LookupX4: %.1f cycles (fails = %.1f%%)\n",
(double)total_time / ((double)ITERATIONS * BATCH_SIZE),
(count * 100.0) / (double)(ITERATIONS * BATCH_SIZE));
/* Delete */
status = 0;
begin = rte_rdtsc();
for (i = 0; i < NUM_ROUTE_ENTRIES; i++) {
/* rte_lpm_delete(lpm, ip, depth) */
status += rte_lpm_delete(lpm, large_route_table[i].ip,
large_route_table[i].depth);
}
total_time += rte_rdtsc() - begin;
printf("Average LPM Delete: %g cycles\n",
(double)total_time / NUM_ROUTE_ENTRIES);
rte_lpm_delete_all(lpm);
rte_lpm_free(lpm);
return PASS;
}
int add_staticroute(struct route_table *route_table){
char str[60];
char *network, *netmask, *nexthop;
struct in_addr addr;
uint32_t ipaddr;
uint8_t depth;
uint8_t key;
FILE *fp = fopen("./routes.txt","r");
if(fp==NULL){
printf("cannot open a file\n");
return 1;
}
printf("file open\n");
fgets(str,20,fp);
while(str[0] == '\n')
fgets(str, 20, fp);
if(strcmp(str,"interface\n") != 0){
printf("invalid file format\n");
return 1;
}
printf("reading interface\n");
int i;
for(i=0; i<4 ;i++){
fgets(str, 50, fp);
network = strtok(str," "); //ignore portXX
network = strtok(NULL," ");
inet_aton(network,&addr);
netmask = strtok(NULL, " ");
netmask = strtok(netmask, "\n");
inet_aton(network,&addr);
port2ip[i][0] = ntohl(addr.s_addr);
inet_aton(netmask,&addr);
port2ip[i][1] = ntohl(addr.s_addr);
}
fgets(str,20,fp);
while(str[0] == '\n')
fgets(str, 20, fp);
if(strcmp(str,"route\n") != 0){
printf("invalid file format\n");
return 1;
}
printf("reading route\n");
while(fgets(str,60,fp) != NULL){
network = strtok(str," ");
netmask = strtok(NULL, " ");
nexthop = strtok(NULL, " ");
nexthop = strtok(nexthop, "\n");
printf("network : %s\n", network);
printf("netmask : %s\n", netmask);
printf("nexthop : %s\n", nexthop);
//make hash of nexthop
inet_aton(nexthop,&addr);
ipaddr = ntohl(addr.s_addr);
key = rte_hash_add_key(route_table->key2nexthop, &ipaddr);
//get depth from netmask
inet_aton(netmask,&addr);
ipaddr = ntohl(addr.s_addr);
// int i;
// for(i=31; i>=0; i--)
// if(ipaddr & (0x00000001 << i) == 0) break;
// depth = 32-(i+1);
depth = 24;
//add route to lpm
inet_aton(network,&addr);
ipaddr = ntohl(addr.s_addr);
if(rte_lpm_add(route_table->lpm, ipaddr, depth, key) <= 0)
printf("lpm_add failed\n\n");
}
fclose(fp);
return 0;
}
