diff options
Diffstat (limited to 'include')
| -rw-r--r-- | include/libvfio-user.h | 31 |
1 files changed, 26 insertions, 5 deletions
diff --git a/include/libvfio-user.h b/include/libvfio-user.h index e091db9..61f94ca 100644 --- a/include/libvfio-user.h +++ b/include/libvfio-user.h @@ -619,13 +619,34 @@ typedef union { int vfu_pci_setup_caps(vfu_ctx_t *vfu_ctx, vfu_cap_t **caps, int nr_caps); -/* FIXME this function is broken as the can be multiples capabilities with the - * same ID, e.g. the vendor-specific capability. +/** + * Find the offset within config space of a given capability (if there are + * multiple possible matches, use vfu_pci_find_next_capability()). + * + * Returns 0 if no such capability was found, with errno set. + * + * @vfu_ctx: the libvfio-user context + * @extended whether capability is an extended one or not + * @id: capability id (PCI_CAP_ID_* or PCI_EXT_CAP_ID *) + */ +size_t +vfu_pci_find_capability(vfu_ctx_t *vfu_ctx, bool extended, int cap_id); + +/** + * Find the offset within config space of the given capability, starting from + * @pos. This can be used to iterate through multiple capabilities with the + * same ID. + * + * Returns 0 if no more matching capabilities were found, with errno set. + * * @vfu_ctx: the libvfio-user context - * @id: capability id + * @pos: offset within config space to start looking + * @extended whether capability is an extended one or not + * @id: capability id (PCI_CAP_ID_*) */ -uint8_t * -vfu_ctx_get_cap(vfu_ctx_t *vfu_ctx, uint8_t id); +size_t +vfu_pci_find_next_capability(vfu_ctx_t *vfu_ctx, bool extended, + size_t pos, int cap_id); #ifdef __cplusplus } |