[PATCH i-g-t v1 3/4] lib/igt_sriov_device: Add helper to iterate over VFs from starting number

[Lukasz Laguna <lukasz.laguna@intel.com>]

Helper allows to iterate over VFs associated with given PF, starting
from a specified VF number.

Signed-off-by: Lukasz Laguna <lukasz.laguna@intel.com>
---
 lib/igt_sriov_device.h | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/lib/igt_sriov_device.h b/lib/igt_sriov_device.h
index de25a7d98..741b1bcec 100644
--- a/lib/igt_sriov_device.h
+++ b/lib/igt_sriov_device.h
@@ -86,6 +86,21 @@ igt_sriov_random_vf_in_range(int pf_fd, unsigned int start, unsigned int end)
 	     ++__vf_num)
 #define for_each_sriov_num_vfs for_each_sriov_vf
 
+/**
+ * for_each_sriov_vf_starting_from - Iterate over VFs starting from a specified VF
+ * @__pf_fd: PF device file descriptor
+ * @__start: Starting VF number
+ * @__vf_num: VFs iterator
+ *
+ * For loop that iterates over VFs associated with given PF @__pf_fd,
+ * starting from a specified VF number @__start.
+ */
+#define for_each_sriov_vf_starting_from(__pf_fd, __start, __vf_num) \
+	for (unsigned int __vf_num = __start, __total_vfs = igt_sriov_get_total_vfs(__pf_fd); \
+	     __vf_num <= __total_vfs; \
+	     ++__vf_num)
+#define for_each_sriov_num_vfs_starting_from for_each_sriov_vf_starting_from
+
 /**
  * for_random_sriov_vf_in_range - Iterate over a random VF in a specified range
  * @__pf_fd: PF device file descriptor
-- 
2.40.0