struct iscsi_context *
iscsi_create_context(const char *initiator_name)
{
struct iscsi_context *iscsi;
size_t required = ISCSI_RAW_HEADER_SIZE + ISCSI_DIGEST_SIZE;
char *ca;
if (!initiator_name[0]) {
return NULL;
}
iscsi = malloc(sizeof(struct iscsi_context));
if (iscsi == NULL) {
return NULL;
}
memset(iscsi, 0, sizeof(struct iscsi_context));
/* initalize transport of context */
if (iscsi_init_transport(iscsi, TCP_TRANSPORT)) {
iscsi_set_error(iscsi, "Failed allocating transport");
return NULL;
}
strncpy(iscsi->initiator_name,initiator_name,MAX_STRING_SIZE);
iscsi->fd = -1;
srand(time(NULL) ^ getpid() ^ (uint32_t) ((uintptr_t) iscsi));
/* initialize to a "random" isid */
iscsi_set_isid_random(iscsi, rand(), 0);
/* assume we start in security negotiation phase */
iscsi->current_phase = ISCSI_PDU_LOGIN_CSG_SECNEG;
iscsi->next_phase = ISCSI_PDU_LOGIN_NSG_OPNEG;
iscsi->secneg_phase = ISCSI_LOGIN_SECNEG_PHASE_OFFER_CHAP;
iscsi->max_burst_length = 262144;
iscsi->first_burst_length = 262144;
iscsi->initiator_max_recv_data_segment_length = 262144;
iscsi->target_max_recv_data_segment_length = 8192;
iscsi->want_initial_r2t = ISCSI_INITIAL_R2T_NO;
iscsi->use_initial_r2t = ISCSI_INITIAL_R2T_YES;
iscsi->want_immediate_data = ISCSI_IMMEDIATE_DATA_YES;
iscsi->use_immediate_data = ISCSI_IMMEDIATE_DATA_YES;
iscsi->want_header_digest = ISCSI_HEADER_DIGEST_NONE_CRC32C;
iscsi->tcp_keepcnt=3;
iscsi->tcp_keepintvl=30;
iscsi->tcp_keepidle=30;
iscsi->reconnect_max_retries = -1;
if (getenv("LIBISCSI_DEBUG") != NULL) {
iscsi_set_log_level(iscsi, atoi(getenv("LIBISCSI_DEBUG")));
iscsi_set_log_fn(iscsi, iscsi_log_to_stderr);
}
if (getenv("LIBISCSI_TCP_USER_TIMEOUT") != NULL) {
iscsi_set_tcp_user_timeout(iscsi,atoi(getenv("LIBISCSI_TCP_USER_TIMEOUT")));
}
if (getenv("LIBISCSI_TCP_KEEPCNT") != NULL) {
iscsi_set_tcp_keepcnt(iscsi,atoi(getenv("LIBISCSI_TCP_KEEPCNT")));
}
if (getenv("LIBISCSI_TCP_KEEPINTVL") != NULL) {
iscsi_set_tcp_keepintvl(iscsi,atoi(getenv("LIBISCSI_TCP_KEEPINTVL")));
}
if (getenv("LIBISCSI_TCP_KEEPIDLE") != NULL) {
iscsi_set_tcp_keepidle(iscsi,atoi(getenv("LIBISCSI_TCP_KEEPIDLE")));
}
if (getenv("LIBISCSI_TCP_SYNCNT") != NULL) {
iscsi_set_tcp_syncnt(iscsi,atoi(getenv("LIBISCSI_TCP_SYNCNT")));
}
if (getenv("LIBISCSI_BIND_INTERFACES") != NULL) {
iscsi_set_bind_interfaces(iscsi,getenv("LIBISCSI_BIND_INTERFACES"));
}
/* iscsi->smalloc_size is the size for small allocations. this should be
max(ISCSI_HEADER_SIZE, sizeof(struct iscsi_pdu), sizeof(struct iscsi_in_pdu))
rounded up to the next power of 2. */
required = MAX(required, sizeof(struct iscsi_pdu));
required = MAX(required, sizeof(struct iscsi_in_pdu));
iscsi->smalloc_size = 1;
while (iscsi->smalloc_size < required) {
iscsi->smalloc_size <<= 1;
}
ISCSI_LOG(iscsi,5,"small allocation size is %d byte", iscsi->smalloc_size);
ca = getenv("LIBISCSI_CACHE_ALLOCATIONS");
if (!ca || atoi(ca) != 0) {
iscsi->cache_allocations = 1;
}
return iscsi;
}
struct iscsi_context *
iscsi_create_context(const char *initiator_name)
{
struct iscsi_context *iscsi;
iscsi = malloc(sizeof(struct iscsi_context));
if (iscsi == NULL) {
return NULL;
}
memset(iscsi, 0, sizeof(struct iscsi_context));
iscsi->initiator_name = strdup(initiator_name);
if (iscsi->initiator_name == NULL) {
free(iscsi);
return NULL;
}
iscsi->fd = -1;
/* initialize to a "random" isid */
iscsi_set_isid_random(iscsi, rand(), 0);
/* assume we start in security negotiation phase */
iscsi->current_phase = ISCSI_PDU_LOGIN_CSG_SECNEG;
iscsi->next_phase = ISCSI_PDU_LOGIN_NSG_OPNEG;
iscsi->secneg_phase = ISCSI_LOGIN_SECNEG_PHASE_OFFER_CHAP;
iscsi->max_burst_length = 262144;
iscsi->first_burst_length = 262144;
iscsi->initiator_max_recv_data_segment_length = 262144;
iscsi->target_max_recv_data_segment_length = 8192;
iscsi->want_initial_r2t = ISCSI_INITIAL_R2T_NO;
iscsi->use_initial_r2t = ISCSI_INITIAL_R2T_NO;
iscsi->want_immediate_data = ISCSI_IMMEDIATE_DATA_YES;
iscsi->use_immediate_data = ISCSI_IMMEDIATE_DATA_YES;
iscsi->want_header_digest = ISCSI_HEADER_DIGEST_NONE_CRC32C;
iscsi->tcp_keepcnt=3;
iscsi->tcp_keepintvl=30;
iscsi->tcp_keepidle=30;
if (getenv("LIBISCSI_DEBUG") != NULL) {
iscsi_set_debug(iscsi,atoi(getenv("LIBISCSI_DEBUG")));
}
if (getenv("LIBISCSI_TCP_USER_TIMEOUT") != NULL) {
iscsi_set_tcp_user_timeout(iscsi,atoi(getenv("LIBISCSI_TCP_USER_TIMEOUT")));
}
if (getenv("LIBISCSI_TCP_KEEPCNT") != NULL) {
iscsi_set_tcp_keepcnt(iscsi,atoi(getenv("LIBISCSI_TCP_KEEPCNT")));
}
if (getenv("LIBISCSI_TCP_KEEPINTVL") != NULL) {
iscsi_set_tcp_keepintvl(iscsi,atoi(getenv("LIBISCSI_TCP_KEEPINTVL")));
}
if (getenv("LIBISCSI_TCP_KEEPIDLE") != NULL) {
iscsi_set_tcp_keepidle(iscsi,atoi(getenv("LIBISCSI_TCP_KEEPIDLE")));
}
if (getenv("LIBISCSI_TCP_SYNCNT") != NULL) {
iscsi_set_tcp_syncnt(iscsi,atoi(getenv("LIBISCSI_TCP_SYNCNT")));
}
return iscsi;
}