ivshmem: remove library and its EAL integration

[dpdk.git] / lib / librte_eal / linuxapp / eal / eal.c

diff --git a/lib/librte_eal/linuxapp/eal/eal.c b/lib/librte_eal/linuxapp/eal/eal.c
index 635ec36..d5b81a3 100644 (file)
--- a/lib/librte_eal/linuxapp/eal/eal.c
+++ b/lib/librte_eal/linuxapp/eal/eal.c
@@ -1,7 +1,7 @@
 /*-
  *   BSD LICENSE
  *
- *   Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
+ *   Copyright(c) 2010-2016 Intel Corporation. All rights reserved.
  *   Copyright(c) 2012-2014 6WIND S.A.
  *   All rights reserved.
  *
@@ -49,7 +49,8 @@
 #include <errno.h>
 #include <sys/mman.h>
 #include <sys/queue.h>
-#if defined(RTE_ARCH_X86_64) || defined(RTE_ARCH_I686)
+#include <sys/stat.h>
+#if defined(RTE_ARCH_X86)
 #include <sys/io.h>
 #endif
 
@@ -81,6 +82,7 @@
 #include "eal_filesystem.h"
 #include "eal_hugepages.h"
 #include "eal_options.h"
+#include "eal_vfio.h"
 
 #define MEMSIZE_IF_NO_HUGE_PAGE (64ULL * 1024ULL * 1024ULL)
 
@@ -464,24 +466,6 @@ eal_parse_vfio_intr(const char *mode)
        return -1;
 }
 
-static inline size_t
-eal_get_hugepage_mem_size(void)
-{
-       uint64_t size = 0;
-       unsigned i, j;
-
-       for (i = 0; i < internal_config.num_hugepage_sizes; i++) {
-               struct hugepage_info *hpi = &internal_config.hugepage_info[i];
-               if (hpi->hugedir != NULL) {
-                       for (j = 0; j < RTE_MAX_NUMA_NODES; j++) {
-                               size += hpi->hugepage_sz * hpi->num_pages[j];
-                       }
-               }
-       }
-
-       return (size < SIZE_MAX) ? (size_t)(size) : SIZE_MAX;
-}
-
 /* Parse the arguments for --log-level only */
 static void
 eal_log_level_parse(int argc, char **argv)
@@ -711,15 +695,40 @@ rte_eal_mcfg_complete(void)
 int
 rte_eal_iopl_init(void)
 {
-#if defined(RTE_ARCH_X86_64) || defined(RTE_ARCH_I686)
+#if defined(RTE_ARCH_X86)
        if (iopl(3) != 0)
                return -1;
-       return 0;
-#else
-       return -1;
 #endif
+       return 0;
 }
 
+#ifdef VFIO_PRESENT
+static int rte_eal_vfio_setup(void)
+{
+       int vfio_enabled = 0;
+
+       if (!internal_config.no_pci) {
+               pci_vfio_enable();
+               vfio_enabled |= pci_vfio_is_enabled();
+       }
+
+       if (vfio_enabled) {
+
+               /* if we are primary process, create a thread to communicate with
+                * secondary processes. the thread will use a socket to wait for
+                * requests from secondary process to send open file descriptors,
+                * because VFIO does not allow multiple open descriptors on a group or
+                * VFIO container.
+                */
+               if (internal_config.process_type == RTE_PROC_PRIMARY &&
+                               vfio_mp_sync_setup() < 0)
+                       return -1;
+       }
+
+       return 0;
+}
+#endif
+
 /* Launch threads, called at application init(). */
 int
 rte_eal_init(int argc, char **argv)
@@ -763,8 +772,6 @@ rte_eal_init(int argc, char **argv)
        if (internal_config.memory == 0 && internal_config.force_sockets == 0) {
                if (internal_config.no_hugetlbfs)
                        internal_config.memory = MEMSIZE_IF_NO_HUGE_PAGE;
-               else
-                       internal_config.memory = eal_get_hugepage_mem_size();
        }
 
        if (internal_config.vmware_tsc_map == 1) {
@@ -785,9 +792,9 @@ rte_eal_init(int argc, char **argv)
        if (rte_eal_pci_init() < 0)
                rte_panic("Cannot init PCI\n");
 
-#ifdef RTE_LIBRTE_IVSHMEM
-       if (rte_eal_ivshmem_init() < 0)
-               rte_panic("Cannot init IVSHMEM\n");
+#ifdef VFIO_PRESENT
+       if (rte_eal_vfio_setup() < 0)
+               rte_panic("Cannot init VFIO\n");
 #endif
 
        if (rte_eal_memory_init() < 0)
@@ -802,11 +809,6 @@ rte_eal_init(int argc, char **argv)
        if (rte_eal_tailqs_init() < 0)
                rte_panic("Cannot init tail queues for objects\n");
 
-#ifdef RTE_LIBRTE_IVSHMEM
-       if (rte_eal_ivshmem_obj_init() < 0)
-               rte_panic("Cannot init IVSHMEM objects\n");
-#endif
-
        if (rte_eal_log_init(logid, internal_config.syslog_facility) < 0)
                rte_panic("Cannot init logs\n");
 
@@ -818,8 +820,6 @@ rte_eal_init(int argc, char **argv)
 
        eal_check_mem_on_local_socket();
 
-       rte_eal_mcfg_complete();
-
        if (eal_plugins_init() < 0)
                rte_panic("Cannot init plugins\n");
 
@@ -862,7 +862,7 @@ rte_eal_init(int argc, char **argv)
                ret = rte_thread_setname(lcore_config[i].thread_id,
                                                thread_name);
                if (ret != 0)
-                       RTE_LOG(ERR, EAL,
+                       RTE_LOG(DEBUG, EAL,
                                "Cannot set name for lcore thread\n");
        }
 
@@ -877,6 +877,8 @@ rte_eal_init(int argc, char **argv)
        if (rte_eal_pci_probe())
                rte_panic("Cannot probe PCI\n");
 
+       rte_eal_mcfg_complete();
+
        return fctret;
 }
 
@@ -901,27 +903,33 @@ int rte_eal_has_hugepages(void)
 int
 rte_eal_check_module(const char *module_name)
 {
-       char mod_name[30]; /* Any module names can be longer than 30 bytes? */
-       int ret = 0;
+       char sysfs_mod_name[PATH_MAX];
+       struct stat st;
        int n;
 
        if (NULL == module_name)
                return -1;
 
-       FILE *fd = fopen("/proc/modules", "r");
-       if (NULL == fd) {
-               RTE_LOG(ERR, EAL, "Open /proc/modules failed!"
-                       " error %i (%s)\n", errno, strerror(errno));
+       /* Check if there is sysfs mounted */
+       if (stat("/sys/module", &st) != 0) {
+               RTE_LOG(DEBUG, EAL, "sysfs is not mounted! error %i (%s)\n",
+                       errno, strerror(errno));
                return -1;
        }
-       while (!feof(fd)) {
-               n = fscanf(fd, "%29s %*[^\n]", mod_name);
-               if ((n == 1) && !strcmp(mod_name, module_name)) {
-                       ret = 1;
-                       break;
-               }
+
+       /* A module might be built-in, therefore try sysfs */
+       n = snprintf(sysfs_mod_name, PATH_MAX, "/sys/module/%s", module_name);
+       if (n < 0 || n > PATH_MAX) {
+               RTE_LOG(DEBUG, EAL, "Could not format module path\n");
+               return -1;
        }
-       fclose(fd);
 
-       return ret;
+       if (stat(sysfs_mod_name, &st) != 0) {
+               RTE_LOG(DEBUG, EAL, "Module %s not found! error %i (%s)\n",
+                       sysfs_mod_name, errno, strerror(errno));
+               return 0;
+       }
+
+       /* Module has been found */
+       return 1;
 }