* We also don't lock the whole file, so that in future we can use read-locks
* on other parts, e.g. memzones, to detect if there are running secondary
* processes. */
-static void
+static int
rte_eal_config_create(void)
{
void *rte_mem_cfg_addr;
const char *pathname = eal_runtime_config_path();
if (internal_config.no_shconf)
- return;
+ return 0;
if (mem_cfg_fd < 0){
mem_cfg_fd = open(pathname, O_RDWR | O_CREAT, 0600);
- if (mem_cfg_fd < 0)
- rte_panic("Cannot open '%s' for rte_mem_config\n", pathname);
+ if (mem_cfg_fd < 0) {
+ RTE_LOG(ERR, EAL, "Cannot open '%s' for rte_mem_config\n",
+ pathname);
+ return -1;
+ }
}
retval = ftruncate(mem_cfg_fd, sizeof(*rte_config.mem_config));
if (retval < 0){
close(mem_cfg_fd);
- rte_panic("Cannot resize '%s' for rte_mem_config\n", pathname);
+ mem_cfg_fd = -1;
+ RTE_LOG(ERR, EAL, "Cannot resize '%s' for rte_mem_config\n",
+ pathname);
+ return -1;
}
retval = fcntl(mem_cfg_fd, F_SETLK, &wr_lock);
if (retval < 0){
close(mem_cfg_fd);
- rte_exit(EXIT_FAILURE, "Cannot create lock on '%s'. Is another primary "
- "process running?\n", pathname);
+ mem_cfg_fd = -1;
+ RTE_LOG(ERR, EAL, "Cannot create lock on '%s'. Is another primary "
+ "process running?\n", pathname);
+ return -1;
}
rte_mem_cfg_addr = mmap(NULL, sizeof(*rte_config.mem_config),
PROT_READ | PROT_WRITE, MAP_SHARED, mem_cfg_fd, 0);
if (rte_mem_cfg_addr == MAP_FAILED){
- rte_panic("Cannot mmap memory for rte_config\n");
+ RTE_LOG(ERR, EAL, "Cannot mmap memory for rte_config\n");
+ close(mem_cfg_fd);
+ mem_cfg_fd = -1;
+ return -1;
}
memcpy(rte_mem_cfg_addr, &early_mem_config, sizeof(early_mem_config));
rte_config.mem_config = rte_mem_cfg_addr;
+
+ return 0;
}
/* attach to an existing shared memory config */
-static void
+static int
rte_eal_config_attach(void)
{
void *rte_mem_cfg_addr;
const char *pathname = eal_runtime_config_path();
if (internal_config.no_shconf)
- return;
+ return 0;
if (mem_cfg_fd < 0){
mem_cfg_fd = open(pathname, O_RDWR);
- if (mem_cfg_fd < 0)
- rte_panic("Cannot open '%s' for rte_mem_config\n", pathname);
+ if (mem_cfg_fd < 0) {
+ RTE_LOG(ERR, EAL, "Cannot open '%s' for rte_mem_config\n",
+ pathname);
+ return -1;
+ }
}
rte_mem_cfg_addr = mmap(NULL, sizeof(*rte_config.mem_config),
- PROT_READ | PROT_WRITE, MAP_SHARED, mem_cfg_fd, 0);
- close(mem_cfg_fd);
- if (rte_mem_cfg_addr == MAP_FAILED)
- rte_panic("Cannot mmap memory for rte_config\n");
+ PROT_READ, MAP_SHARED, mem_cfg_fd, 0);
+ /* don't close the fd here, it will be closed on reattach */
+ if (rte_mem_cfg_addr == MAP_FAILED) {
+ close(mem_cfg_fd);
+ mem_cfg_fd = -1;
+ RTE_LOG(ERR, EAL, "Cannot mmap memory for rte_config! error %i (%s)\n",
+ errno, strerror(errno));
+ return -1;
+ }
rte_config.mem_config = rte_mem_cfg_addr;
+
+ return 0;
+}
+
+/* reattach the shared config at exact memory location primary process has it */
+static int
+rte_eal_config_reattach(void)
+{
+ struct rte_mem_config *mem_config;
+ void *rte_mem_cfg_addr;
+
+ if (internal_config.no_shconf)
+ return 0;
+
+ /* save the address primary process has mapped shared config to */
+ rte_mem_cfg_addr =
+ (void *)(uintptr_t)rte_config.mem_config->mem_cfg_addr;
+
+ /* unmap original config */
+ munmap(rte_config.mem_config, sizeof(struct rte_mem_config));
+
+ /* remap the config at proper address */
+ mem_config = (struct rte_mem_config *) mmap(rte_mem_cfg_addr,
+ sizeof(*mem_config), PROT_READ | PROT_WRITE, MAP_SHARED,
+ mem_cfg_fd, 0);
+ close(mem_cfg_fd);
+ mem_cfg_fd = -1;
+
+ if (mem_config == MAP_FAILED) {
+ RTE_LOG(ERR, EAL, "Cannot mmap memory for rte_config! error %i (%s)\n",
+ errno, strerror(errno));
+ return -1;
+ } else if (mem_config != rte_mem_cfg_addr) {
+ /* errno is stale, don't use */
+ RTE_LOG(ERR, EAL, "Cannot mmap memory for rte_config at [%p], got [%p]\n",
+ rte_mem_cfg_addr, mem_config);
+ return -1;
+ }
+
+ rte_config.mem_config = mem_config;
+
+ return 0;
}
/* Detect if we are a primary or a secondary process */
}
/* Sets up rte_config structure with the pointer to shared memory config.*/
-static void
+static int
rte_config_init(void)
{
rte_config.process_type = internal_config.process_type;
switch (rte_config.process_type){
case RTE_PROC_PRIMARY:
- rte_eal_config_create();
+ if (rte_eal_config_create() < 0)
+ return -1;
break;
case RTE_PROC_SECONDARY:
- rte_eal_config_attach();
+ if (rte_eal_config_attach() < 0)
+ return -1;
rte_eal_mcfg_wait_complete(rte_config.mem_config);
+ if (rte_eal_config_reattach() < 0)
+ return -1;
break;
case RTE_PROC_AUTO:
case RTE_PROC_INVALID:
- rte_panic("Invalid process type\n");
+ RTE_LOG(ERR, EAL, "Invalid process type %d\n",
+ rte_config.process_type);
+ return -1;
}
+
+ return 0;
}
/* display usage */
/* ALL shared mem_config related INIT DONE */
if (rte_config.process_type == RTE_PROC_PRIMARY)
rte_config.mem_config->magic = RTE_MAGIC;
+
+ internal_config.init_complete = 1;
}
/* return non-zero if hugepages are enabled. */
return -1;
}
- rte_config_init();
+ if (rte_config_init() < 0) {
+ rte_eal_init_alert("Cannot init config");
+ return -1;
+ }
if (rte_eal_intr_init() < 0) {
rte_eal_init_alert("Cannot init interrupt-handling thread");
}
if (rte_eal_alarm_init() < 0) {
- rte_eal_init_alert("Cannot init interrupt-handling thread");
+ rte_eal_init_alert("Cannot init alarm");
/* rte_eal_alarm_init sets rte_errno on failure. */
return -1;
}
/* Put mp channel init before bus scan so that we can init the vdev
* bus through mp channel in the secondary process before the bus scan.
*/
- if (rte_mp_channel_init() < 0) {
+ if (rte_mp_channel_init() < 0 && rte_errno != ENOTSUP) {
rte_eal_init_alert("failed to init mp channel");
if (rte_eal_process_type() == RTE_PROC_PRIMARY) {
rte_errno = EFAULT;
/* if no EAL option "--iova-mode=<pa|va>", use bus IOVA scheme */
if (internal_config.iova_mode == RTE_IOVA_DC) {
/* autodetect the IOVA mapping mode (default is RTE_IOVA_PA) */
- rte_eal_get_configuration()->iova_mode =
- rte_bus_get_iommu_class();
+ enum rte_iova_mode iova_mode = rte_bus_get_iommu_class();
+
+ if (iova_mode == RTE_IOVA_DC)
+ iova_mode = RTE_IOVA_PA;
+ rte_eal_get_configuration()->iova_mode = iova_mode;
} else {
rte_eal_get_configuration()->iova_mode =
internal_config.iova_mode;
}
+ RTE_LOG(INFO, EAL, "Selected IOVA mode '%s'\n",
+ rte_eal_iova_mode() == RTE_IOVA_PA ? "PA" : "VA");
+
if (internal_config.no_hugetlbfs == 0) {
/* rte_config isn't initialized yet */
ret = internal_config.process_type == RTE_PROC_PRIMARY ?
#endif
}
- rte_srand(rte_rdtsc());
-
/* in secondary processes, memory init may allocate additional fbarrays
* not present in primary processes, so to avoid any potential issues,
* initialize memzones first.
return fctret;
}
-int __rte_experimental
+int
rte_eal_cleanup(void)
{
rte_service_finalize();
git.droids-corp.org / dpdk.git / blobdiff