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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [PATCH v7 5/7] xl: support naming of assignable devices
From: Paul Durrant <pdurrant@xxxxxxxxxx>
With this patch applied 'xl pci-assignable-add' will take an optional '--name'
parameter, 'xl pci-assignable-remove' can be passed either a BDF or a name and
'xl pci-assignable-list' will take a optional '--show-names' flag which
determines whether names are displayed in its output.
Signed-off-by: Paul Durrant <pdurrant@xxxxxxxxxx>
---
Cc: Ian Jackson <iwj@xxxxxxxxxxxxxx>
Cc: Wei Liu <wl@xxxxxxx>
Cc: Anthony PERARD <anthony.perard@xxxxxxxxxx>
v7:
- Heavily re-worked, bearing only some resemblance to similarly named v6 patch
---
tools/xl/xl_cmdtable.c | 12 ++++---
tools/xl/xl_pci.c | 89 ++++++++++++++++++++++++++++++++++++--------------
2 files changed, 73 insertions(+), 28 deletions(-)
diff --git a/tools/xl/xl_cmdtable.c b/tools/xl/xl_cmdtable.c
index 30e17a2848..bd8af12ff3 100644
--- a/tools/xl/xl_cmdtable.c
+++ b/tools/xl/xl_cmdtable.c
@@ -105,21 +105,25 @@ struct cmd_spec cmd_table[] = {
{ "pci-assignable-add",
&main_pciassignable_add, 0, 1,
"Make a device assignable for pci-passthru",
- "<BDF>",
+ "[options] <BDF>",
+ "-n NAME, --name=NAME Name the assignable device.\n"
"-h Print this help.\n"
},
{ "pci-assignable-remove",
&main_pciassignable_remove, 0, 1,
"Remove a device from being assignable",
- "[options] <BDF>",
+ "[options] <BDF>|NAME",
"-h Print this help.\n"
"-r Attempt to re-assign the device to the\n"
- " original driver"
+ " original driver."
},
{ "pci-assignable-list",
&main_pciassignable_list, 0, 0,
"List all the assignable pci devices",
- "",
+ "[options]",
+ "-h Print this help.\n"
+ "-n, --show-names Display assignable device names where\n"
+ " supplied.\n"
},
{ "pause",
&main_pause, 0, 1,
diff --git a/tools/xl/xl_pci.c b/tools/xl/xl_pci.c
index 9a66494bb5..b1c3ae2a72 100644
--- a/tools/xl/xl_pci.c
+++ b/tools/xl/xl_pci.c
@@ -151,7 +151,7 @@ int main_pciattach(int argc, char **argv)
return EXIT_SUCCESS;
}
-static void pciassignable_list(void)
+static void pciassignable_list(bool show_names)
{
libxl_device_pci *pcis;
int num, i;
@@ -161,8 +161,12 @@ static void pciassignable_list(void)
if ( pcis == NULL )
return;
for (i = 0; i < num; i++) {
- printf("%04x:%02x:%02x.%01x\n",
- pcis[i].domain, pcis[i].bus, pcis[i].dev, pcis[i].func);
+ libxl_device_pci *pci = &pcis[i];
+ char *name = show_names ? pci->name : NULL;
+
+ printf("%04x:%02x:%02x.%01x %s\n",
+ pci->domain, pci->bus, pci->dev, pci->func,
+ name ?: "");
}
libxl_device_pci_assignable_list_free(pcis, num);
}
@@ -170,20 +174,27 @@ static void pciassignable_list(void)
int main_pciassignable_list(int argc, char **argv)
{
int opt;
-
- SWITCH_FOREACH_OPT(opt, "", NULL, "pci-assignable-list", 0) {
- /* No options */
+ static struct option opts[] = {
+ {"show-names", 0, 0, 'n'},
+ COMMON_LONG_OPTS
+ };
+ bool show_names = false;
+
+ SWITCH_FOREACH_OPT(opt, "n", opts, "pci-assignable-list", 0) {
+ case 'n':
+ show_names = true;
+ break;
}
- pciassignable_list();
+ pciassignable_list(show_names);
return 0;
}
-static int pciassignable_add(const char *bdf, int rebind)
+static int pciassignable_add(const char *bdf, const char *name, int rebind)
{
libxl_device_pci pci;
XLU_Config *config;
- int r = 0;
+ int r;
libxl_device_pci_init(&pci);
@@ -195,8 +206,15 @@ static int pciassignable_add(const char *bdf, int rebind)
exit(2);
}
- if (libxl_device_pci_assignable_add(ctx, &pci, rebind))
- r = 1;
+ if (name) {
+ pci.name = strdup(name);
+ if (!pci.name) {
+ fprintf(stderr, "pci-assignable-add: memory allocation failure\n");
+ exit(2);
+ }
+ }
+
+ r = libxl_device_pci_assignable_add(ctx, &pci, rebind);
libxl_device_pci_dispose(&pci);
xlu_cfg_destroy(config);
@@ -208,38 +226,61 @@ int main_pciassignable_add(int argc, char **argv)
{
int opt;
const char *bdf = NULL;
-
- SWITCH_FOREACH_OPT(opt, "", NULL, "pci-assignable-add", 1) {
- /* No options */
+ static struct option opts[] = {
+ {"name", 1, 0, 'n'},
+ COMMON_LONG_OPTS
+ };
+ const char *name = NULL;
+
+ SWITCH_FOREACH_OPT(opt, "n:", opts, "pci-assignable-add", 1) {
+ case 'n':
+ name = optarg;
+ break;
}
bdf = argv[optind];
- if (pciassignable_add(bdf, 1))
+ if (pciassignable_add(bdf, name, 1))
return EXIT_FAILURE;
return EXIT_SUCCESS;
}
-static int pciassignable_remove(const char *bdf, int rebind)
+static int pciassignable_remove(const char *ident, int rebind)
{
libxl_device_pci pci;
XLU_Config *config;
- int r = 0;
+ int r;
libxl_device_pci_init(&pci);
config = xlu_cfg_init(stderr, "command line");
if (!config) { perror("xlu_cfg_init"); exit(-1); }
- if (xlu_pci_parse_bdf(config, &pci, bdf)) {
- fprintf(stderr, "pci-assignable-remove: malformed BDF \"%s\"\n", bdf);
+ /* Try remove-by-name first */
+ pci.name = strdup(ident);
+ if (!pci.name) {
+ fprintf(stderr, "pci-assignable-add: memory allocation failure\n");
exit(2);
}
- if (libxl_device_pci_assignable_remove(ctx, &pci, rebind))
- r = 1;
+ r = libxl_device_pci_assignable_remove(ctx, &pci, rebind);
+ if (!r || r != ERROR_NOTFOUND)
+ goto out;
+
+ /* If remove-by-name failed to find the device, try remove-by-BDF */
+ free(pci.name);
+ pci.name = NULL;
+ if (xlu_pci_parse_bdf(config, &pci, ident)) {
+ fprintf(stderr,
+ "pci-assignable-remove: malformed BDF '%s'\n", ident);
+ exit(2);
+ }
+
+ r = libxl_device_pci_assignable_remove(ctx, &pci, rebind);
+
+out:
libxl_device_pci_dispose(&pci);
xlu_cfg_destroy(config);
@@ -249,7 +290,7 @@ static int pciassignable_remove(const char *bdf, int rebind)
int main_pciassignable_remove(int argc, char **argv)
{
int opt;
- const char *bdf = NULL;
+ const char *ident = NULL;
int rebind = 0;
SWITCH_FOREACH_OPT(opt, "r", NULL, "pci-assignable-remove", 1) {
@@ -258,9 +299,9 @@ int main_pciassignable_remove(int argc, char **argv)
break;
}
- bdf = argv[optind];
+ ident = argv[optind];
- if (pciassignable_remove(bdf, rebind))
+ if (pciassignable_remove(ident, rebind))
return EXIT_FAILURE;
return EXIT_SUCCESS;
--
2.11.0
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