From: Darek Stojaczyk <dariusz.stojaczyk@intel.com>
To: dev@dpdk.org
Cc: Alejandro Lucero <alejandro.lucero@netronome.com>,
Anatoly Burakov <anatoly.burakov@intel.com>,
stable@dpdk.org, Dariusz Stojaczyk <dariuszx.stojaczyk@intel.com>
Subject: [dpdk-dev] [PATCH 2/2] eal/vfio: cleanup getting group fd
Date: Mon, 17 Sep 2018 15:46:43 +0200 [thread overview]
Message-ID: <20180917134643.103871-2-dariusz.stojaczyk@intel.com> (raw)
In-Reply-To: <20180917134643.103871-1-dariusz.stojaczyk@intel.com>
From: Dariusz Stojaczyk <dariuszx.stojaczyk@intel.com>
Factor out duplicated code.
Signed-off-by: Dariusz Stojaczyk <dariuszx.stojaczyk@intel.com>
---
lib/librte_eal/linuxapp/eal/eal_vfio.c | 119 ++++++++++---------------
1 file changed, 45 insertions(+), 74 deletions(-)
diff --git a/lib/librte_eal/linuxapp/eal/eal_vfio.c b/lib/librte_eal/linuxapp/eal/eal_vfio.c
index bcb869be1..3e93a7934 100644
--- a/lib/librte_eal/linuxapp/eal/eal_vfio.c
+++ b/lib/librte_eal/linuxapp/eal/eal_vfio.c
@@ -345,46 +345,13 @@ get_vfio_cfg_by_group_num(int iommu_group_num)
return NULL;
}
-static struct vfio_config *
-get_vfio_cfg_by_group_fd(int vfio_group_fd)
-{
- struct vfio_config *vfio_cfg;
- int i, j;
-
- for (i = 0; i < VFIO_MAX_CONTAINERS; i++) {
- vfio_cfg = &vfio_cfgs[i];
- for (j = 0; j < VFIO_MAX_GROUPS; j++)
- if (vfio_cfg->vfio_groups[j].fd == vfio_group_fd)
- return vfio_cfg;
- }
-
- return NULL;
-}
-
-static struct vfio_config *
-get_vfio_cfg_by_container_fd(int container_fd)
-{
- int i;
-
- for (i = 0; i < VFIO_MAX_CONTAINERS; i++) {
- if (vfio_cfgs[i].vfio_container_fd == container_fd)
- return &vfio_cfgs[i];
- }
-
- return NULL;
-}
-
-int
-rte_vfio_get_group_fd(int iommu_group_num)
+static int
+vfio_get_group_fd(struct vfio_config *vfio_cfg,
+ int iommu_group_num)
{
int i;
int vfio_group_fd;
struct vfio_group *cur_grp;
- struct vfio_config *vfio_cfg;
-
- /* get the vfio_config it belongs to */
- vfio_cfg = get_vfio_cfg_by_group_num(iommu_group_num);
- vfio_cfg = vfio_cfg ? vfio_cfg : default_vfio_cfg;
/* check if we already have the group descriptor open */
for (i = 0; i < VFIO_MAX_GROUPS; i++)
@@ -423,6 +390,47 @@ rte_vfio_get_group_fd(int iommu_group_num)
return vfio_group_fd;
}
+static struct vfio_config *
+get_vfio_cfg_by_group_fd(int vfio_group_fd)
+{
+ struct vfio_config *vfio_cfg;
+ int i, j;
+
+ for (i = 0; i < VFIO_MAX_CONTAINERS; i++) {
+ vfio_cfg = &vfio_cfgs[i];
+ for (j = 0; j < VFIO_MAX_GROUPS; j++)
+ if (vfio_cfg->vfio_groups[j].fd == vfio_group_fd)
+ return vfio_cfg;
+ }
+
+ return NULL;
+}
+
+static struct vfio_config *
+get_vfio_cfg_by_container_fd(int container_fd)
+{
+ int i;
+
+ for (i = 0; i < VFIO_MAX_CONTAINERS; i++) {
+ if (vfio_cfgs[i].vfio_container_fd == container_fd)
+ return &vfio_cfgs[i];
+ }
+
+ return NULL;
+}
+
+int
+rte_vfio_get_group_fd(int iommu_group_num)
+{
+ struct vfio_config *vfio_cfg;
+
+ /* get the vfio_config it belongs to */
+ vfio_cfg = get_vfio_cfg_by_group_num(iommu_group_num);
+ vfio_cfg = vfio_cfg ? vfio_cfg : default_vfio_cfg;
+
+ return vfio_get_group_fd(vfio_cfg, iommu_group_num);
+}
+
static int
get_vfio_group_idx(int vfio_group_fd)
{
@@ -1670,9 +1678,6 @@ int
rte_vfio_container_group_bind(int container_fd, int iommu_group_num)
{
struct vfio_config *vfio_cfg;
- struct vfio_group *cur_grp;
- int vfio_group_fd;
- int i;
vfio_cfg = get_vfio_cfg_by_container_fd(container_fd);
if (vfio_cfg == NULL) {
@@ -1680,41 +1685,7 @@ rte_vfio_container_group_bind(int container_fd, int iommu_group_num)
return -1;
}
- /* check if we already have the group descriptor open */
- for (i = 0; i < VFIO_MAX_GROUPS; i++)
- if (vfio_cfg->vfio_groups[i].group_num == iommu_group_num)
- return vfio_cfg->vfio_groups[i].fd;
-
- /* Check room for new group */
- if (vfio_cfg->vfio_active_groups == VFIO_MAX_GROUPS) {
- RTE_LOG(ERR, EAL, "Maximum number of VFIO groups reached!\n");
- return -1;
- }
-
- /* Get an index for the new group */
- for (i = 0; i < VFIO_MAX_GROUPS; i++)
- if (vfio_cfg->vfio_groups[i].group_num == -1) {
- cur_grp = &vfio_cfg->vfio_groups[i];
- break;
- }
-
- /* This should not happen */
- if (i == VFIO_MAX_GROUPS) {
- RTE_LOG(ERR, EAL, "No VFIO group free slot found\n");
- return -1;
- }
-
- vfio_group_fd = vfio_open_group_fd(iommu_group_num);
- if (vfio_group_fd < 0) {
- RTE_LOG(ERR, EAL, "Failed to open group %d\n", iommu_group_num);
- return -1;
- }
- cur_grp->group_num = iommu_group_num;
- cur_grp->fd = vfio_group_fd;
- cur_grp->devices = 0;
- vfio_cfg->vfio_active_groups++;
-
- return vfio_group_fd;
+ return vfio_get_group_fd(vfio_cfg, iommu_group_num);
}
int
--
2.17.1
next prev parent reply other threads:[~2018-09-17 13:49 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-09-17 13:46 [dpdk-dev] [PATCH 1/2] eal/vfio: check if we already have the group fd open Darek Stojaczyk
2018-09-17 13:46 ` Darek Stojaczyk [this message]
2018-09-26 12:34 ` [dpdk-dev] [PATCH 2/2] eal/vfio: cleanup getting group fd Burakov, Anatoly
2018-09-25 7:56 ` [dpdk-dev] [PATCH 1/2] eal/vfio: check if we already have the group fd open Wang, Xiao W
2018-10-29 0:26 ` Thomas Monjalon
2018-09-26 12:35 ` Burakov, Anatoly
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20180917134643.103871-2-dariusz.stojaczyk@intel.com \
--to=dariusz.stojaczyk@intel.com \
--cc=alejandro.lucero@netronome.com \
--cc=anatoly.burakov@intel.com \
--cc=dariuszx.stojaczyk@intel.com \
--cc=dev@dpdk.org \
--cc=stable@dpdk.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).