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From f53c2c68db7780353a915072f8c953a74149b1f7 Mon Sep 17 00:00:00 2001
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From: Cornelia Huck <cohuck@redhat.com>
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Date: Tue, 19 Jan 2021 12:50:42 -0500
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Subject: [PATCH 3/7] vfio: Create shared routine for scanning info
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capabilities
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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RH-Author: Cornelia Huck <cohuck@redhat.com>
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Message-id: <20210119125046.472811-4-cohuck@redhat.com>
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Patchwork-id: 100678
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O-Subject: [RHEL-8.4.0 qemu-kvm PATCH 3/7] vfio: Create shared routine for scanning info capabilities
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Bugzilla: 1905391
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RH-Acked-by: David Hildenbrand <david@redhat.com>
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RH-Acked-by: Auger Eric <eric.auger@redhat.com>
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RH-Acked-by: Thomas Huth <thuth@redhat.com>
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From: Matthew Rosato <mjrosato@linux.ibm.com>
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Rather than duplicating the same loop in multiple locations,
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create a static function to do the work.
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Signed-off-by: Matthew Rosato <mjrosato@linux.ibm.com>
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Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
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Reviewed-by: Cornelia Huck <cohuck@redhat.com>
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Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
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(cherry picked from commit 3ab7a0b40d4be5ade3b61d4afd1518193b199423)
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Signed-off-by: Cornelia Huck <cohuck@redhat.com>
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Signed-off-by: Danilo C. L. de Paula <ddepaula@redhat.com>
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---
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hw/vfio/common.c | 21 +++++++++++++--------
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1 file changed, 13 insertions(+), 8 deletions(-)
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diff --git a/hw/vfio/common.c b/hw/vfio/common.c
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index 5ca11488d67..77d62d2dcdf 100644
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--- a/hw/vfio/common.c
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+++ b/hw/vfio/common.c
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@@ -826,17 +826,12 @@ static void vfio_listener_release(VFIOContainer *container)
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}
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}
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-struct vfio_info_cap_header *
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-vfio_get_region_info_cap(struct vfio_region_info *info, uint16_t id)
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+static struct vfio_info_cap_header *
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+vfio_get_cap(void *ptr, uint32_t cap_offset, uint16_t id)
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{
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struct vfio_info_cap_header *hdr;
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- void *ptr = info;
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-
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- if (!(info->flags & VFIO_REGION_INFO_FLAG_CAPS)) {
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- return NULL;
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- }
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- for (hdr = ptr + info->cap_offset; hdr != ptr; hdr = ptr + hdr->next) {
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+ for (hdr = ptr + cap_offset; hdr != ptr; hdr = ptr + hdr->next) {
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if (hdr->id == id) {
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return hdr;
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}
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@@ -845,6 +840,16 @@ vfio_get_region_info_cap(struct vfio_region_info *info, uint16_t id)
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return NULL;
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}
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+struct vfio_info_cap_header *
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+vfio_get_region_info_cap(struct vfio_region_info *info, uint16_t id)
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+{
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+ if (!(info->flags & VFIO_REGION_INFO_FLAG_CAPS)) {
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+ return NULL;
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+ }
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+
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+ return vfio_get_cap((void *)info, info->cap_offset, id);
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+}
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+
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static int vfio_setup_region_sparse_mmaps(VFIORegion *region,
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struct vfio_region_info *info)
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{
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--
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2.27.0
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