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The capwap data channel migrated from userspace to kernalspace

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This commit is contained in:
vemax78
2014-09-10 21:58:23 +02:00
parent 71006a9121
commit 8d9985fdea
104 changed files with 6967 additions and 4840 deletions
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105
src/wtp/wtp_dfa_dtls.c
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@ -7,23 +7,14 @@ static void wtp_dfa_state_dtlsconnect_timeout(struct capwap_timeout* timeout, un
wtp_teardown_connection();
}
/* DTLS BIO send */
int wtp_bio_send(struct capwap_dtls* dtls, char* buffer, int length, void* param) {
struct capwap_socket* socket = ((dtls->session == CAPWAP_DTLS_CONTROL_SESSION) ? &g_wtp.acctrlsock : &g_wtp.acdatasock);
struct sockaddr_storage* wtpaddress = ((dtls->session == CAPWAP_DTLS_CONTROL_SESSION) ? &g_wtp.wtpctrladdress : &g_wtp.wtpdataaddress);
struct sockaddr_storage* acaddress = ((dtls->session == CAPWAP_DTLS_CONTROL_SESSION) ? &g_wtp.acctrladdress : &g_wtp.acdataaddress);
return capwap_sendto(socket->socket[socket->type], buffer, length, wtpaddress, acaddress);
}
/* */
void wtp_start_dtlssetup(void) {
/* Create DTLS session */
if (!capwap_crypt_createsession(&g_wtp.ctrldtls, CAPWAP_DTLS_CONTROL_SESSION, &g_wtp.dtlscontext, wtp_bio_send, NULL)) {
if (!capwap_crypt_createsession(&g_wtp.dtls, &g_wtp.dtlscontext)) {
wtp_dfa_change_state(CAPWAP_SULKING_STATE);
capwap_timeout_set(g_wtp.timeout, g_wtp.idtimercontrol, WTP_SILENT_INTERVAL, wtp_dfa_state_sulking_timeout, NULL, NULL);
} else {
if (capwap_crypt_open(&g_wtp.ctrldtls, &g_wtp.acctrladdress) == CAPWAP_HANDSHAKE_ERROR) {
if (capwap_crypt_open(&g_wtp.dtls) == CAPWAP_HANDSHAKE_ERROR) {
wtp_dfa_change_state(CAPWAP_SULKING_STATE);
capwap_timeout_set(g_wtp.timeout, g_wtp.idtimercontrol, WTP_SILENT_INTERVAL, wtp_dfa_state_sulking_timeout, NULL, NULL);
} else {
@ -35,77 +26,34 @@ void wtp_start_dtlssetup(void) {
/* */
void wtp_start_datachannel(void) {
struct capwap_list* txfragpacket;
struct capwap_header_data capwapheader;
struct capwap_packet_txmng* txmngpacket;
union sockaddr_capwap dataaddr;
/* If need, create DTLS Data channel crypted */
if (g_wtp.dtlsdatapolicy & CAPWAP_ACDESC_DTLS_DATA_CHANNEL_ENABLED) {
if (!g_wtp.datadtls.enable) {
/* Create DTLS data session before send data keepalive */
if (capwap_crypt_createsession(&g_wtp.datadtls, CAPWAP_DTLS_DATA_SESSION, &g_wtp.dtlscontext, wtp_bio_send, NULL)) {
if (capwap_crypt_open(&g_wtp.datadtls, &g_wtp.acdataaddress) == CAPWAP_HANDSHAKE_CONTINUE) {
capwap_timeout_set(g_wtp.timeout, g_wtp.idtimercontrol, WTP_DTLS_INTERVAL, wtp_dfa_state_dtlsconnect_timeout, NULL, NULL); /* Wait complete dtls handshake */
} else {
wtp_teardown_connection();
}
} else {
wtp_teardown_connection();
}
/* Set AC data address */
memcpy(&dataaddr, &g_wtp.dtls.peeraddr, sizeof(union sockaddr_capwap));
CAPWAP_SET_NETWORK_PORT(&dataaddr, (CAPWAP_GET_NETWORK_PORT(&g_wtp.dtls.peeraddr) + 1));
return;
} else if (g_wtp.datadtls.action != CAPWAP_DTLS_ACTION_DATA) {
wtp_teardown_connection();
return;
}
}
/* Connect to AC data channel */
if (!wtp_kmod_connect(&dataaddr.ss, &g_wtp.sessionid, g_wtp.mtu)) {
/* Reset AC Prefered List Position */
g_wtp.acpreferedselected = 0;
/* Build packet */
capwap_header_init(&capwapheader, CAPWAP_RADIOID_NONE, g_wtp.binding);
capwap_header_set_keepalive_flag(&capwapheader, 1);
txmngpacket = capwap_packet_txmng_create_data_message(&capwapheader, g_wtp.mtu); /* CAPWAP_DONT_FRAGMENT */
/* Add message element */
capwap_packet_txmng_add_message_element(txmngpacket, CAPWAP_ELEMENT_SESSIONID, &g_wtp.sessionid);
/* Data keepalive complete, get fragment packets into local list */
txfragpacket = capwap_list_create();
capwap_packet_txmng_get_fragment_packets(txmngpacket, txfragpacket, 0);
if (txfragpacket->count == 1) {
/* Send Data keepalive to AC */
if (capwap_crypt_sendto_fragmentpacket(&g_wtp.datadtls, g_wtp.acdatasock.socket[g_wtp.acdatasock.type], txfragpacket, &g_wtp.wtpdataaddress, &g_wtp.acdataaddress)) {
/* Reset AC Prefered List Position */
g_wtp.acpreferedselected = 0;
/* Set timer */
wtp_dfa_change_state(CAPWAP_RUN_STATE);
capwap_timeout_unset(g_wtp.timeout, g_wtp.idtimercontrol);
capwap_timeout_set(g_wtp.timeout, g_wtp.idtimerecho, g_wtp.echointerval, wtp_dfa_state_run_echo_timeout, NULL, NULL);
capwap_timeout_set(g_wtp.timeout, g_wtp.idtimerkeepalivedead, WTP_DATACHANNEL_KEEPALIVEDEAD, wtp_dfa_state_run_keepalivedead_timeout, NULL, NULL);
} else {
/* Error to send packets */
capwap_logging_debug("Warning: error to send data channel keepalive packet");
wtp_teardown_connection();
}
/* Set timer */
wtp_dfa_change_state(CAPWAP_RUN_STATE);
capwap_timeout_unset(g_wtp.timeout, g_wtp.idtimercontrol);
capwap_timeout_set(g_wtp.timeout, g_wtp.idtimerecho, g_wtp.echointerval, wtp_dfa_state_run_echo_timeout, NULL, NULL);
capwap_timeout_set(g_wtp.timeout, g_wtp.idtimerkeepalivedead, WTP_DATACHANNEL_KEEPALIVEDEAD, wtp_dfa_state_run_keepalivedead_timeout, NULL, NULL);
} else {
capwap_logging_debug("Warning: error to send data channel keepalive packet, fragment packet");
/* Error to send packets */
capwap_logging_error("Error to send data channel keepalive packet");
wtp_teardown_connection();
}
/* Free packets manager */
capwap_list_free(txfragpacket);
capwap_packet_txmng_free(txmngpacket);
}
/* */
static void wtp_dfa_state_dtlsteardown_timeout(struct capwap_timeout* timeout, unsigned long index, void* context, void* param) {
/* Free and reset resource */
if (g_wtp.ctrldtls.enable) {
capwap_crypt_freesession(&g_wtp.ctrldtls);
}
if (g_wtp.datadtls.enable) {
capwap_crypt_freesession(&g_wtp.datadtls);
if (g_wtp.dtls.enable) {
capwap_crypt_freesession(&g_wtp.dtls);
}
/* */
@ -117,8 +65,7 @@ static void wtp_dfa_state_dtlsteardown_timeout(struct capwap_timeout* timeout, u
/* */
wtp_free_reference_last_request();
wtp_free_reference_last_response();
wtp_free_packet_rxmng(0);
wtp_free_packet_rxmng(1);
wtp_free_packet_rxmng();
/* */
if (!g_wtp.running) {
@ -140,15 +87,15 @@ void wtp_dfa_state_dtlsteardown(struct capwap_parsed_packet* packet) {
void wtp_teardown_connection(void) {
g_wtp.teardown = 1;
/* TODO: close SSID ? */
/* DTSL Control */
if (g_wtp.ctrldtls.enable) {
capwap_crypt_close(&g_wtp.ctrldtls);
if (g_wtp.dtls.enable) {
capwap_crypt_close(&g_wtp.dtls);
}
/* DTLS Data */
if (g_wtp.datadtls.enable) {
capwap_crypt_close(&g_wtp.datadtls);
}
/* Close data channel session */
wtp_kmod_resetsession();
/* */
wtp_dfa_change_state(CAPWAP_DTLS_TEARDOWN_STATE);