#ifdef RTE_IBVERBS_LINK_DLOPEN
#include <dlfcn.h>
#endif
+#include <dirent.h>
+#include <net/if.h>
#include <rte_errno.h>
+#include <rte_string_fns.h>
#include "mlx5_common.h"
#include "mlx5_common_utils.h"
{
FILE *file;
char line[32];
+ int rc = -ENOENT;
MKSTR(path, "%s/device/uevent", dev_path);
file = fopen(path, "rb");
}
while (fgets(line, sizeof(line), file) == line) {
size_t len = strlen(line);
- int ret;
/* Truncate long lines. */
- if (len == (sizeof(line) - 1))
+ if (len == (sizeof(line) - 1)) {
while (line[(len - 1)] != '\n') {
- ret = fgetc(file);
+ int ret = fgetc(file);
+
if (ret == EOF)
- break;
+ goto exit;
line[(len - 1)] = ret;
}
+ /* No match for long lines. */
+ continue;
+ }
/* Extract information. */
if (sscanf(line,
"PCI_SLOT_NAME="
&pci_addr->bus,
&pci_addr->devid,
&pci_addr->function) == 4) {
- ret = 0;
+ rc = 0;
break;
}
}
+exit:
fclose(file);
- return 0;
+ if (rc)
+ rte_errno = -rc;
+ return rc;
}
/**
mlx5_translate_port_name(const char *port_name_in,
struct mlx5_switch_info *port_info_out)
{
- char pf_c1, pf_c2, vf_c1, vf_c2;
+ char pf_c1, pf_c2, vf_c1, vf_c2, eol;
char *end;
int sc_items;
* Check for port-name as a string of the form pf0vf0
* (support kernel ver >= 5.0 or OFED ver >= 4.6).
*/
- sc_items = sscanf(port_name_in, "%c%c%d%c%c%d",
+ sc_items = sscanf(port_name_in, "%c%c%d%c%c%d%c",
&pf_c1, &pf_c2, &port_info_out->pf_num,
- &vf_c1, &vf_c2, &port_info_out->port_name);
+ &vf_c1, &vf_c2, &port_info_out->port_name, &eol);
if (sc_items == 6 &&
pf_c1 == 'p' && pf_c2 == 'f' &&
vf_c1 == 'v' && vf_c2 == 'f') {
* Check for port-name as a string of the form p0
* (support kernel ver >= 5.0, or OFED ver >= 4.6).
*/
- sc_items = sscanf(port_name_in, "%c%d",
- &pf_c1, &port_info_out->port_name);
+ sc_items = sscanf(port_name_in, "%c%d%c",
+ &pf_c1, &port_info_out->port_name, &eol);
if (sc_items == 2 && pf_c1 == 'p') {
port_info_out->name_type = MLX5_PHYS_PORT_NAME_TYPE_UPLINK;
return;
}
+ /*
+ * Check for port-name as a string of the form pf0
+ * (support kernel ver >= 5.7 for HPF representor on BF).
+ */
+ sc_items = sscanf(port_name_in, "%c%c%d%c",
+ &pf_c1, &pf_c2, &port_info_out->pf_num, &eol);
+ if (sc_items == 3 && pf_c1 == 'p' && pf_c2 == 'f') {
+ port_info_out->port_name = -1;
+ port_info_out->name_type = MLX5_PHYS_PORT_NAME_TYPE_PFHPF;
+ return;
+ }
/* Check for port-name as a number (support kernel ver < 5.0 */
errno = 0;
port_info_out->port_name = strtol(port_name_in, &end, 0);
port_info_out->name_type = MLX5_PHYS_PORT_NAME_TYPE_UNKNOWN;
}
+/**
+ * Get kernel interface name from IB device path.
+ *
+ * @param[in] ibdev_path
+ * Pointer to IB device path.
+ * @param[out] ifname
+ * Interface name output buffer.
+ *
+ * @return
+ * 0 on success, a negative errno value otherwise and rte_errno is set.
+ */
+int
+mlx5_get_ifname_sysfs(const char *ibdev_path, char *ifname)
+{
+ DIR *dir;
+ struct dirent *dent;
+ unsigned int dev_type = 0;
+ unsigned int dev_port_prev = ~0u;
+ char match[IF_NAMESIZE] = "";
+
+ MLX5_ASSERT(ibdev_path);
+ {
+ MKSTR(path, "%s/device/net", ibdev_path);
+
+ dir = opendir(path);
+ if (dir == NULL) {
+ rte_errno = errno;
+ return -rte_errno;
+ }
+ }
+ while ((dent = readdir(dir)) != NULL) {
+ char *name = dent->d_name;
+ FILE *file;
+ unsigned int dev_port;
+ int r;
+
+ if ((name[0] == '.') &&
+ ((name[1] == '\0') ||
+ ((name[1] == '.') && (name[2] == '\0'))))
+ continue;
+
+ MKSTR(path, "%s/device/net/%s/%s",
+ ibdev_path, name,
+ (dev_type ? "dev_id" : "dev_port"));
+
+ file = fopen(path, "rb");
+ if (file == NULL) {
+ if (errno != ENOENT)
+ continue;
+ /*
+ * Switch to dev_id when dev_port does not exist as
+ * is the case with Linux kernel versions < 3.15.
+ */
+try_dev_id:
+ match[0] = '\0';
+ if (dev_type)
+ break;
+ dev_type = 1;
+ dev_port_prev = ~0u;
+ rewinddir(dir);
+ continue;
+ }
+ r = fscanf(file, (dev_type ? "%x" : "%u"), &dev_port);
+ fclose(file);
+ if (r != 1)
+ continue;
+ /*
+ * Switch to dev_id when dev_port returns the same value for
+ * all ports. May happen when using a MOFED release older than
+ * 3.0 with a Linux kernel >= 3.15.
+ */
+ if (dev_port == dev_port_prev)
+ goto try_dev_id;
+ dev_port_prev = dev_port;
+ if (dev_port == 0)
+ strlcpy(match, name, IF_NAMESIZE);
+ }
+ closedir(dir);
+ if (match[0] == '\0') {
+ rte_errno = ENOENT;
+ return -rte_errno;
+ }
+ strncpy(ifname, match, IF_NAMESIZE);
+ return 0;
+}
+
#ifdef MLX5_GLUE
/**
" libmlx5)");
mlx5_glue = NULL;
}
+
git.droids-corp.org / dpdk.git / blobdiff