From: Ramesh Thomas <ramesh.thomas(a)intel.com&gt; Return path to uacce device path for user wqs. This includes support for legacy mode device names. Signed-off-by: Ramesh Thomas <ramesh.thomas(a)intel.com&gt; --- accfg/lib/libaccel-config.sym | 5 ++++ accfg/lib/libaccfg.c | 55 +++++++++++++++++++++++++++++++++++ accfg/libaccel_config.h | 1 + 3 files changed, 61 insertions(+) diff --git a/accfg/lib/libaccel-config.sym b/accfg/lib/libaccel-config.sym index 4de2a49..a28ac97 100644 --- a/accfg/lib/libaccel-config.sym +++ b/accfg/lib/libaccel-config.sym @@ -141,3 +141,8 @@ global: accfg_remove_mdev; accfg_device_get_mdev_enabled; } LIBACCFG_6; + +LIBACCFG_8 { +global: + accfg_wq_get_uacce_path; +} LIBACCFG_7; diff --git a/accfg/lib/libaccfg.c b/accfg/lib/libaccfg.c index 1d89d4c..dd0219c 100644 --- a/accfg/lib/libaccfg.c +++ b/accfg/lib/libaccfg.c @@ -25,6 +25,7 @@ #include <ccan/build_assert/build_assert.h> #include <util/sysfs.h> #include <accfg/libaccel_config.h> +#include <fnmatch.h> #include "private.h" #define MDEV_POSTFIX "mdev_supported_types" @@ -2099,6 +2100,60 @@ ACCFG_EXPORT int accfg_wq_size_boundary(struct accfg_device *device, return 0; } +ACCFG_EXPORT int accfg_wq_get_uacce_path(struct accfg_wq *wq, char *buf, + size_t size) +{ + struct dirent **d; + int n, n1; + char *f; + char p[PATH_MAX]; + struct accfg_ctx *ctx; + int rc = 0; + + ctx = accfg_device_get_ctx(wq->device); + + sprintf(p, "/dev/%s", wq->device->bus_type_str); + n1 = n = scandir(p, &d, NULL, alphasort); + if (n < 0) { + err(ctx, "UACCE device path not found %s\n", p); + return -ENOENT; + } + + sprintf(p, "%s-*", accfg_wq_get_devname(wq)); + + while (n--) { + f = &d[n]->d_name[0]; + + if (!fnmatch(p, f, 0) || !strcmp(accfg_wq_get_devname(wq), f)) + break; + } + + if (n < 0) { + err(ctx, "UACCE device for %s not found at /dev/%s\n", + accfg_wq_get_devname(wq), + wq->device->bus_type_str); + rc = -ENOENT; + goto ext_uacce; + } + + n = sprintf(p, "/dev/%s/%s", wq->device->bus_type_str, f); + + if ((size_t)n >= size) { + err(ctx, "Buffer size too small. Need %d bytes\n", n + 1); + rc = -ERANGE; + goto ext_uacce; + } + + strcpy(buf, p); + +ext_uacce: + while (n1--) + free(d[n1]); + free(d); + + return rc; +} + #define accfg_wq_set_field(wq, val, field) \ ACCFG_EXPORT int accfg_wq_set_##field( \ struct accfg_wq *wq, int val) \ diff --git a/accfg/libaccel_config.h b/accfg/libaccel_config.h index 94aef80..e61fd40 100644 --- a/accfg/libaccel_config.h +++ b/accfg/libaccel_config.h @@ -276,6 +276,7 @@ int accfg_wq_enable(struct accfg_wq *wq); int accfg_wq_disable(struct accfg_wq *wq, bool force); int accfg_wq_priority_boundary(struct accfg_wq *wq); int accfg_wq_size_boundary(struct accfg_device *device, int wq_num); +int accfg_wq_get_uacce_path(struct accfg_wq *wq, char *buf, size_t size); /* libaccfg function for engine */ struct accfg_engine; -- 2.26.3