/* Try to execute action with the drop action, which should succeed */
static void
test_action_execute_drop(int argc, char *argv[])
{
struct rte_mbuf buf_free;
struct rte_mbuf buf_drop;
struct action action_multiple[MAX_ACTIONS] = {0};
struct action action_drop[MAX_ACTIONS] = {0};
stats_init();
stats_vswitch_clear();
/* TODO: Break this into multiple tests? */
/* check that mbuf is freed on drop */
assert(memcmp(&buf_free, &buf_drop, sizeof(buf_drop)) != 0);
buf_drop.pkt.next = NULL; /* Required for rte_pktmbuf_free */
memcpy(&buf_free, &buf_drop, sizeof(buf_drop));
assert(memcmp(&buf_free, &buf_drop, sizeof(buf_drop)) == 0);
action_drop_build(&action_drop[0]);
action_null_build(&action_drop[1]);
action_execute(action_drop, &buf_free);
assert(memcmp(&buf_free, &buf_drop, sizeof(buf_drop)) != 0);
/* check that vswitch rx drop stats are increased */
stats_vswitch_clear();
assert(stats_vswitch_rx_drop_get() == 0);
action_drop_build(&action_drop[0]);
action_null_build(&action_drop[1]);
action_execute(action_drop, &buf_drop);
assert(stats_vswitch_rx_drop_get() == 1);
}
/* Try to execute action with invalid parameters, which should fail
* with -1 */
static void
test_action_execute_output__invalid_params(int argc, char *argv[])
{
struct rte_mbuf buf_multiple[5];
struct action action_multiple[MAX_ACTIONS] = {0};
int ret = 0;
/* check incorrect parameters */
vport_init();
action_output_build(&action_multiple[0], 17);
action_null_build(&action_multiple[1]);
ret = action_execute(NULL, &buf_multiple[1]);
assert(ret < 0);
ret = action_execute(action_multiple, NULL);
assert(ret < 0);
}
/* Try to execute action with a pop vlan and output action, which should succeed */
static void
test_action_execute_multiple_actions__pop_vlan_and_output(int argc, char *argv[])
{
/* We write some data into the place where a VLAN tag would be and the 4
* bytes after. We then call action execute and make sure the fake VLAN tag
* is gone and has been replaced by the data in the 4 bytes after
*
* We then output the packet to a port and make the same checks
*/
struct rte_mempool *pktmbuf_pool;
struct action action_multiple[MAX_ACTIONS] = {0};
int count = 0;
pktmbuf_pool = rte_mempool_create("MProc_pktmbuf_pool",
20, /* num mbufs */
2048 + sizeof(struct rte_mbuf) + 128, /*pktmbuf size */
32, /*cache size */
sizeof(struct rte_pktmbuf_pool_private),
rte_pktmbuf_pool_init,
NULL, rte_pktmbuf_init, NULL, 0, 0);
struct rte_mbuf *vlan_output_buf = rte_pktmbuf_alloc(pktmbuf_pool);
vport_init();
/* We have no real packet but the function which pops the VLAN does
* some checks of pkt len so we define a fake one here
*/
vlan_output_buf->pkt.pkt_len = 20;
action_pop_vlan_build(&action_multiple[0]);
action_output_build(&action_multiple[1], 17);
action_null_build(&action_multiple[2]);
int *pktmbuf_data = rte_pktmbuf_mtod(vlan_output_buf, int *);
*(pktmbuf_data + 2) = 0xCAFED00D;
/* Note last 2 bytes must be 0081, ie 8100 in network format */
*(pktmbuf_data + 3) = 0x00000081; /* 12 bytes after src/dst MAC is vlan */
*(pktmbuf_data + 4) = 0xBABEFACE;
action_execute(action_multiple, vlan_output_buf);
pktmbuf_data = rte_pktmbuf_mtod(vlan_output_buf, int *);
assert(*(pktmbuf_data + 3) != 0x00000081);
assert(*(pktmbuf_data + 3) == 0xBABEFACE);
count = receive_from_vport(17, &vlan_output_buf);
pktmbuf_data = rte_pktmbuf_mtod(vlan_output_buf, int *);
assert(count == 1);
assert(*(pktmbuf_data + 3) != 0x00000081);
assert(*(pktmbuf_data + 3) == 0xBABEFACE);
}
/* Modify packet ethernet header */
static void
test_action_execute_set_ethernet(int argc, char *argv[])
{
struct rte_mempool *pktmbuf_pool;
struct action action_multiple[MAX_ACTIONS] = {0};
pktmbuf_pool = rte_mempool_create("MProc_pktmbuf_pool",
20, /* num mbufs */
2048 + sizeof(struct rte_mbuf) + 128, /*pktmbuf size */
32, /*cache size */
sizeof(struct rte_pktmbuf_pool_private),
rte_pktmbuf_pool_init,
NULL, rte_pktmbuf_init, NULL, 0, 0);
struct rte_mbuf *ethernet_buf = rte_pktmbuf_alloc(pktmbuf_pool);
struct ovs_key_ethernet set_ethernet;
__u8 eth_src_set[6] = {0xDE, 0xAD, 0xBE, 0xEF, 0xCA, 0xFE};
__u8 eth_dst_set[6] = {0xCA, 0xFE, 0xDE, 0xAD, 0xBE, 0xEF};
memcpy(&set_ethernet.eth_src, ð_src_set, sizeof(eth_src_set));
memcpy(&set_ethernet.eth_dst, ð_dst_set, sizeof(eth_dst_set));
struct ovs_key_ethernet ethernet_orig;
__u8 eth_src_orig[6] = {0xFF, 0xFF, 0xFF, 0xCC, 0xCC, 0xCC};
__u8 eth_dst_orig[6] = {0xAA, 0xAA, 0xAA, 0xEE, 0xEE, 0xEE};
memcpy(ðernet_orig.eth_src, ð_src_orig, sizeof(eth_src_orig));
memcpy(ðernet_orig.eth_dst, ð_dst_orig, sizeof(eth_dst_orig));
vport_init();
action_multiple[0].type = ACTION_SET_ETHERNET;
action_multiple[0].data.ethernet = set_ethernet;
action_null_build(&action_multiple[1]);
struct ovs_key_ethernet *pktmbuf_data =
rte_pktmbuf_mtod(ethernet_buf, struct ovs_key_ethernet *);
memcpy(pktmbuf_data, ðernet_orig, sizeof(ethernet_orig));
action_execute(action_multiple, ethernet_buf);
pktmbuf_data = rte_pktmbuf_mtod(ethernet_buf, struct ovs_key_ethernet *);
/* Can't compare struct directly as ovs_key_ethernet has src first then
* dst whereas the real ethernet header has dst first then source
*/
assert(memcmp(pktmbuf_data, &set_ethernet.eth_dst, sizeof(eth_dst_set)) == 0);
assert(memcmp((uint8_t *)pktmbuf_data + sizeof(eth_dst_set),
&set_ethernet.eth_src, sizeof(eth_src_set)) == 0);
rte_pktmbuf_free(ethernet_buf);
}
/* Try to execute action with the push vlan (PCP) action, which should
* succeed */
static void
test_action_execute_push_vlan__pcp(int argc, char *argv[])
{
/* Write Ethertype value of 0x0800 to byte 11 of the packet,
* where it is expected, and assign a length to the packet.
* After call to action_execute:
* - the length of the packet should have increased by 4 bytes
* - the value of byte 11 should by 0x8100 (0081 in network format)
* - the value of byte 15 should by 0x0800 (0008 in network format)
* - the value of the TCI field should be equal to the assigned
* value
*/
struct rte_mempool *pktmbuf_pool;
struct action action_multiple[MAX_ACTIONS] = {0};
pktmbuf_pool = rte_mempool_create("MProc_pktmbuf_pool",
20, /* num mbufs */
2048 + sizeof(struct rte_mbuf) + 128, /*pktmbuf size */
32, /*cache size */
sizeof(struct rte_pktmbuf_pool_private),
rte_pktmbuf_pool_init,
NULL, rte_pktmbuf_init, NULL, 0, 0);
struct rte_mbuf *pcp_buf = rte_pktmbuf_alloc(pktmbuf_pool);
uint16_t pcp_tci = htons(0x2000); /* PCP is the upper 3 bits of the TCI */
vport_init();
/* Set the packet length - after the VLAN tag has been inserted,
* the value should increase by 4 bytes (i.e. the length of the tag)
*/
pcp_buf->pkt.pkt_len = 64;
action_push_vlan_build(&action_multiple[0], pcp_tci);
action_null_build(&action_multiple[1]);
short *pkt_data = rte_pktmbuf_mtod(pcp_buf, short *);
*(pkt_data + 6) = 0x0008; /* Set Ethertype to 0008, i.e. 0800 in network format */
action_execute(action_multiple, pcp_buf);
pkt_data = rte_pktmbuf_mtod(pcp_buf, short *);
assert(*(pkt_data + 6) == 0x0081); /* 802.1Q Ethertype has been inserted */
assert(*(pkt_data + 7) == 0x0020); /* TCI value has been inserted */
assert(*(pkt_data + 8) == 0x0008); /* Ethertype has been shifted by 4 bytes */
assert(pcp_buf->pkt.pkt_len == 68);/* Packet length has increased by 4 bytes */
rte_pktmbuf_free(pcp_buf);
}
/*
* This function takes a packet and routes it as per the flow table.
*/
static void
switch_packet(struct rte_mbuf *pkt, uint8_t in_port)
{
int pos = 0;
struct dpdk_upcall info = {0};
flow_key_extract(pkt, in_port, &info.key);
pos = rte_hash_lookup(handle, &info.key);
if (pos < 0) {
/* flow table miss, send unmatched packet to the daemon */
info.cmd = PACKET_CMD_MISS;
send_packet_to_vswitchd(pkt, &info);
} else {
flow_table_update_stats(pos, pkt);
action_execute(pos, pkt);
}
}
/*
* This function takes a packet and routes it as per the flow table.
*/
void
switch_packet(struct rte_mbuf *pkt, uint8_t in_port)
{
int ret = 0;
struct dpdk_upcall info = {0};
struct action action = {0};
flow_key_extract(pkt, in_port, &info.key);
ret = flow_table_get_flow(&info.key, &action, NULL);
if (ret >= 0) {
flow_table_update_stats(&info.key, pkt);
action_execute(&action, pkt);
} else {
/* flow table miss, send unmatched packet to the daemon */
info.cmd = PACKET_CMD_MISS;
send_packet_to_vswitchd(pkt, &info);
}
}
/* Modify packet ipv4 header */
static void
test_action_execute_set_ipv4(int argc, char *argv[])
{
struct rte_mempool *pktmbuf_pool;
struct action action_multiple[MAX_ACTIONS] = {0};
struct ipv4_hdr *pkt_ipv4;
pktmbuf_pool = rte_mempool_create("MProc_pktmbuf_pool",
20, /* num mbufs */
2048 + sizeof(struct rte_mbuf) + 128, /*pktmbuf size */
32, /*cache size */
sizeof(struct rte_pktmbuf_pool_private),
rte_pktmbuf_pool_init,
NULL, rte_pktmbuf_init, NULL, 0, 0);
struct rte_mbuf *ipv4_buf = rte_pktmbuf_alloc(pktmbuf_pool);
struct ovs_key_ipv4 set_ipv4;
set_ipv4.ipv4_tos = 0xFF;
vport_init();
action_multiple[0].type = ACTION_SET_IPV4;
action_multiple[0].data.ipv4 = set_ipv4;
action_null_build(&action_multiple[1]);
uint8_t *pktmbuf_data =
rte_pktmbuf_mtod(ipv4_buf, uint8_t *);
pktmbuf_data += sizeof(struct ether_hdr);
pkt_ipv4 = (struct ipv4_hdr *)(pktmbuf_data);
pkt_ipv4->type_of_service = 0xaa;
action_execute(action_multiple, ipv4_buf);
pktmbuf_data = rte_pktmbuf_mtod(ipv4_buf, uint8_t *);
pktmbuf_data += sizeof(struct ether_hdr);
pkt_ipv4 = (struct ipv4_hdr *)(pktmbuf_data);
assert(pkt_ipv4->type_of_service == set_ipv4.ipv4_tos);
rte_pktmbuf_free(ipv4_buf);
}
/* Try to execute action with three output actions, which should succeed */
static void
test_action_execute_multiple_actions__three_output(int argc, char *argv[])
{
/* Three different output ports */
/* We need to be able to clone mbufs which requires an
* alloc which requires a mempool
*/
struct rte_mempool *pktmbuf_pool;
struct rte_mbuf *mbuf_output = NULL;
struct action action_multiple[MAX_ACTIONS] = {0};
int count = 0;
pktmbuf_pool = rte_mempool_create("MProc_pktmbuf_pool",
20, /* num mbufs */
2048 + sizeof(struct rte_mbuf) + 128, /*pktmbuf size */
32, /*cache size */
sizeof(struct rte_pktmbuf_pool_private),
rte_pktmbuf_pool_init,
NULL, rte_pktmbuf_init, NULL, 0, 0);
mbuf_output = rte_pktmbuf_alloc(pktmbuf_pool);
vport_init();
action_output_build(&action_multiple[0], 3);
action_output_build(&action_multiple[1], 33);
action_output_build(&action_multiple[2], 17);
action_null_build(&action_multiple[3]);
action_execute(action_multiple, mbuf_output);
count = receive_from_vport(3, &mbuf_output);
assert(count == 1);
count = receive_from_vport(33, &mbuf_output);
assert(count == 1);
count = receive_from_vport(17, &mbuf_output);
assert(count == 1);
}
/* Try to execute action with a client interface, which should succeed */
static void
test_action_execute_output(int argc, char *argv[])
{
struct rte_mbuf buf_multiple[5];
struct rte_mbuf *buf_p_multiple[5];
struct action action_multiple[MAX_ACTIONS] = {0};
int count = 0;
uint8_t vportid = 3;
buf_p_multiple[0] = &buf_multiple[0];
buf_p_multiple[1] = &buf_multiple[1];
buf_p_multiple[2] = &buf_multiple[2];
buf_p_multiple[3] = &buf_multiple[3];
buf_p_multiple[4] = &buf_multiple[4];
/* client */
vport_init();
action_output_build(&action_multiple[0], vportid);
action_null_build(&action_multiple[1]);
action_execute(action_multiple, buf_multiple);
count = receive_from_vport(vportid, buf_p_multiple);
assert(count == 1);
assert(buf_p_multiple[1] == &buf_multiple[1]);
}
/**************************************
Return RET_NOK on error
**************************************/
ret_code_t parse_incoming_data(context_t * context, Uint32 command, Uint32 command_size, char * data)
{
char * value = NULL;
char * fullname;
char * elements[512];
char * cksum;
int i;
char * user_name;
char * password;
if( !context_get_connected(context) && ( command != CMD_REQ_LOGIN && command != CMD_REQ_FILE) ) {
werr(LOGUSER,"Request from not authenticated client, close connection");
return RET_NOK;
}
switch(command) {
case CMD_REQ_LOGIN:
wlog(LOGDEBUG,"Received CMD_REQ_LOGIN");
user_name = _strsep(&data,NETWORK_DELIMITER);
password = _strsep(&data,NETWORK_DELIMITER);
if(entry_read_string(PASSWD_TABLE, user_name, &value, PASSWD_KEY_PASSWORD,NULL) == RET_NOK) {
return RET_NOK;
}
if( strcmp(value, password) != 0) {
free(value);
werr(LOGUSER,"Wrong login for %s",user_name);
// send answer
network_send_command(context, CMD_SEND_LOGIN_NOK, 0, NULL, false);
// force client disconnection
return RET_NOK;
} else {
free(value);
if( context_set_username(context, user_name) == RET_NOK ) {
return RET_NOK;
}
context_set_connected(context, true);
// send answer
network_send_command(context, CMD_SEND_LOGIN_OK, 0, NULL, false);
wlog(LOGUSER,"Login successful for user %s",context->user_name);
}
break;
case CMD_REQ_CHARACTER_LIST :
wlog(LOGDEBUG,"Received CMD_REQ_CHARACTER_LIST");
character_send_list(context);
wlog(LOGDEBUG,"character list sent");
break;
case CMD_REQ_FILE :
i = 0;
elements[i] = _strsep(&data,NETWORK_DELIMITER);
while(elements[i]) {
i++;
elements[i] = _strsep(&data,NETWORK_DELIMITER);
}
if(elements[0]==NULL || elements[1]==NULL) {
werr(LOGDEV,"Received erroneous CMD_REQ_FILE");
break;
}
wlog(LOGDEBUG,"Received CMD_REQ_FILE for %s",elements[0]);
/* compare checksum */
fullname = strconcat(base_directory,"/",elements[0],NULL);
cksum = checksum_file(fullname);
free(fullname);
if( cksum == NULL) {
werr(LOGUSER,"Required file %s doesn't exists",elements[0]);
break;
}
if( strcmp(elements[1],cksum) == 0 ) {
wlog(LOGDEBUG,"Client has already newest %s file",elements[0]);
free(cksum);
break;
}
free(cksum);
network_send_file(context,elements[0]);
wlog(LOGDEBUG,"File %s sent",elements[0]);
break;
case CMD_REQ_USER_CHARACTER_LIST :
wlog(LOGDEBUG,"Received CMD_REQ_USER_CHARACTER_LIST");
character_user_send_list(context);
wlog(LOGDEBUG,"user %s's character list sent",context->user_name);
break;
case CMD_REQ_START :
if( context->in_game == false ) {
context->id = strdup(data);
context->in_game = true;
context_update_from_file(context);
context_spread(context);
context_request_other_context(context);
}
wlog(LOGDEBUG,"Received CMD_REQ_START for %s /%s",context->user_name,context->id);
break;
case CMD_REQ_STOP :
wlog(LOGDEBUG,"Received CMD_REQ_STOP for %s /%s",context->user_name,context->id);
if( context->in_game == true ) {
context->in_game = false;
if( context->map ) {
free(context->map);
}
context->map = NULL;
if( context->prev_map ) {
free(context->prev_map);
}
context->prev_map = NULL;
if( context->id ) {
free(context->id);
}
context->id = NULL;
context_spread(context);
}
break;
case CMD_REQ_ACTION :
i = 0;
elements[i] = NULL;
elements[i] = _strsep(&data,NETWORK_DELIMITER);
while(elements[i]) {
i++;
elements[i] = _strsep(&data,NETWORK_DELIMITER);
}
elements[i+1] = NULL;
wlog(LOGDEBUG,"Received CMD_REQ_ACTION %s from %s /%s",elements[0],context->user_name,context->character_name);
action_execute(context,elements[0],&elements[1]);
break;
default:
werr(LOGDEV,"Unknown request %d from client",command);
return RET_NOK;
}
return RET_OK;
}
/*
* Handle packet commands
*/
static void
handle_packet_cmd(struct dpdk_packet_message *request, struct rte_mbuf *pkt)
{
action_execute(request->actions, pkt);
}