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Date: Tue, 4 Dec 2018 10:14:07 +0000
From: Shalom Toledo <shalomt@...lanox.com>
To: "netdev@...r.kernel.org" <netdev@...r.kernel.org>
CC: "dsahern@...il.com" <dsahern@...il.com>,
"jakub.kicinski@...ronome.com" <jakub.kicinski@...ronome.com>,
mlxsw <mlxsw@...lanox.com>
Subject: [PATCH iproute2-next 1/2] devlink: Add string to uint{8,16,32}
conversion for generic parameters
Allow setting u{8,16,32} generic parameters as a well defined strings in
devlink user space tool.
Signed-off-by: Shalom Toledo <shalomt@...lanox.com>
Reviewed-by: Jiri Pirko <jiri@...lanox.com>
---
devlink/devlink.c | 145 ++++++++++++++++++++++++++++++++++++++++++----
1 file changed, 135 insertions(+), 10 deletions(-)
diff --git a/devlink/devlink.c b/devlink/devlink.c
index 8bb254ea1b0b..1e3deb24d214 100644
--- a/devlink/devlink.c
+++ b/devlink/devlink.c
@@ -1920,10 +1920,69 @@ static int cmd_dev_eswitch(struct dl *dl)
return -ENOENT;
}
-static void pr_out_param_value(struct dl *dl, int nla_type, struct nlattr *nl)
+struct param_val_conv {
+ const char *name;
+ const char *vstr;
+ uint32_t vuint;
+};
+
+static bool param_val_conv_exists(const struct param_val_conv *param_val_conv,
+ uint32_t len, const char *name)
+{
+ uint32_t i;
+
+ for (i = 0; i < len; i++)
+ if (!strcmp(param_val_conv[i].name, name))
+ return true;
+
+ return false;
+}
+
+static int
+param_val_conv_uint_get(const struct param_val_conv *param_val_conv,
+ uint32_t len, const char *name, const char *vstr,
+ uint32_t *vuint)
+{
+ uint32_t i;
+
+ for (i = 0; i < len; i++)
+ if (!strcmp(param_val_conv[i].name, name) &&
+ !strcmp(param_val_conv[i].vstr, vstr)) {
+ *vuint = param_val_conv[i].vuint;
+ return 0;
+ }
+
+ return -ENOENT;
+}
+
+static int
+param_val_conv_str_get(const struct param_val_conv *param_val_conv,
+ uint32_t len, const char *name, uint32_t vuint,
+ const char **vstr)
+{
+ uint32_t i;
+
+ for (i = 0; i < len; i++)
+ if (!strcmp(param_val_conv[i].name, name) &&
+ param_val_conv[i].vuint == vuint) {
+ *vstr = param_val_conv[i].vstr;
+ return 0;
+ }
+
+ return -ENOENT;
+}
+
+static const struct param_val_conv param_val_conv[] = {};
+
+#define PARAM_VAL_CONV_LEN ARRAY_SIZE(param_val_conv)
+
+static void pr_out_param_value(struct dl *dl, const char *nla_name,
+ int nla_type, struct nlattr *nl)
{
struct nlattr *nla_value[DEVLINK_ATTR_MAX + 1] = {};
struct nlattr *val_attr;
+ const char *vstr;
+ bool conv_exists;
int err;
err = mnl_attr_parse_nested(nl, attr_cb, nla_value);
@@ -1939,15 +1998,51 @@ static void pr_out_param_value(struct dl *dl, int nla_type, struct nlattr *nl)
param_cmode_name(mnl_attr_get_u8(nla_value[DEVLINK_ATTR_PARAM_VALUE_CMODE])));
val_attr = nla_value[DEVLINK_ATTR_PARAM_VALUE_DATA];
+ conv_exists = param_val_conv_exists(param_val_conv, PARAM_VAL_CONV_LEN,
+ nla_name);
+
switch (nla_type) {
case MNL_TYPE_U8:
- pr_out_uint(dl, "value", mnl_attr_get_u8(val_attr));
+ if (conv_exists) {
+ err = param_val_conv_str_get(param_val_conv,
+ PARAM_VAL_CONV_LEN,
+ nla_name,
+ mnl_attr_get_u8(val_attr),
+ &vstr);
+ if (err)
+ return;
+ pr_out_str(dl, "value", vstr);
+ } else {
+ pr_out_uint(dl, "value", mnl_attr_get_u8(val_attr));
+ }
break;
case MNL_TYPE_U16:
- pr_out_uint(dl, "value", mnl_attr_get_u16(val_attr));
+ if (conv_exists) {
+ err = param_val_conv_str_get(param_val_conv,
+ PARAM_VAL_CONV_LEN,
+ nla_name,
+ mnl_attr_get_u16(val_attr),
+ &vstr);
+ if (err)
+ return;
+ pr_out_str(dl, "value", vstr);
+ } else {
+ pr_out_uint(dl, "value", mnl_attr_get_u16(val_attr));
+ }
break;
case MNL_TYPE_U32:
- pr_out_uint(dl, "value", mnl_attr_get_u32(val_attr));
+ if (conv_exists) {
+ err = param_val_conv_str_get(param_val_conv,
+ PARAM_VAL_CONV_LEN,
+ nla_name,
+ mnl_attr_get_u32(val_attr),
+ &vstr);
+ if (err)
+ return;
+ pr_out_str(dl, "value", vstr);
+ } else {
+ pr_out_uint(dl, "value", mnl_attr_get_u32(val_attr));
+ }
break;
case MNL_TYPE_STRING:
pr_out_str(dl, "value", mnl_attr_get_str(val_attr));
@@ -1962,6 +2057,7 @@ static void pr_out_param(struct dl *dl, struct nlattr **tb, bool array)
{
struct nlattr *nla_param[DEVLINK_ATTR_MAX + 1] = {};
struct nlattr *param_value_attr;
+ const char *nla_name;
int nla_type;
int err;
@@ -1980,8 +2076,8 @@ static void pr_out_param(struct dl *dl, struct nlattr **tb, bool array)
nla_type = mnl_attr_get_u8(nla_param[DEVLINK_ATTR_PARAM_TYPE]);
- pr_out_str(dl, "name",
- mnl_attr_get_str(nla_param[DEVLINK_ATTR_PARAM_NAME]));
+ nla_name = mnl_attr_get_str(nla_param[DEVLINK_ATTR_PARAM_NAME]);
+ pr_out_str(dl, "name", nla_name);
if (!nla_param[DEVLINK_ATTR_PARAM_GENERIC])
pr_out_str(dl, "type", "driver-specific");
@@ -1992,7 +2088,7 @@ static void pr_out_param(struct dl *dl, struct nlattr **tb, bool array)
mnl_attr_for_each_nested(param_value_attr,
nla_param[DEVLINK_ATTR_PARAM_VALUES_LIST]) {
pr_out_entry_start(dl);
- pr_out_param_value(dl, nla_type, param_value_attr);
+ pr_out_param_value(dl, nla_name, nla_type, param_value_attr);
pr_out_entry_end(dl);
}
pr_out_array_end(dl);
@@ -2097,6 +2193,7 @@ static int cmd_dev_param_set(struct dl *dl)
{
struct param_ctx ctx = {};
struct nlmsghdr *nlh;
+ bool conv_exists;
uint32_t val_u32;
uint16_t val_u16;
uint8_t val_u8;
@@ -2124,10 +2221,22 @@ static int cmd_dev_param_set(struct dl *dl)
NLM_F_REQUEST | NLM_F_ACK);
dl_opts_put(nlh, dl);
+ conv_exists = param_val_conv_exists(param_val_conv, PARAM_VAL_CONV_LEN,
+ dl->opts.param_name);
+
mnl_attr_put_u8(nlh, DEVLINK_ATTR_PARAM_TYPE, ctx.nla_type);
switch (ctx.nla_type) {
case MNL_TYPE_U8:
- err = strtouint8_t(dl->opts.param_value, &val_u8);
+ if (conv_exists) {
+ err = param_val_conv_uint_get(param_val_conv,
+ PARAM_VAL_CONV_LEN,
+ dl->opts.param_name,
+ dl->opts.param_value,
+ &val_u32);
+ val_u8 = val_u32;
+ } else {
+ err = strtouint8_t(dl->opts.param_value, &val_u8);
+ }
if (err)
goto err_param_value_parse;
if (val_u8 == ctx.value.vu8)
@@ -2135,7 +2244,16 @@ static int cmd_dev_param_set(struct dl *dl)
mnl_attr_put_u8(nlh, DEVLINK_ATTR_PARAM_VALUE_DATA, val_u8);
break;
case MNL_TYPE_U16:
- err = strtouint16_t(dl->opts.param_value, &val_u16);
+ if (conv_exists) {
+ err = param_val_conv_uint_get(param_val_conv,
+ PARAM_VAL_CONV_LEN,
+ dl->opts.param_name,
+ dl->opts.param_value,
+ &val_u32);
+ val_u16 = val_u32;
+ } else {
+ err = strtouint16_t(dl->opts.param_value, &val_u16);
+ }
if (err)
goto err_param_value_parse;
if (val_u16 == ctx.value.vu16)
@@ -2143,7 +2261,14 @@ static int cmd_dev_param_set(struct dl *dl)
mnl_attr_put_u16(nlh, DEVLINK_ATTR_PARAM_VALUE_DATA, val_u16);
break;
case MNL_TYPE_U32:
- err = strtouint32_t(dl->opts.param_value, &val_u32);
+ if (conv_exists)
+ err = param_val_conv_uint_get(param_val_conv,
+ PARAM_VAL_CONV_LEN,
+ dl->opts.param_name,
+ dl->opts.param_value,
+ &val_u32);
+ else
+ err = strtouint32_t(dl->opts.param_value, &val_u32);
if (err)
goto err_param_value_parse;
if (val_u32 == ctx.value.vu32)
--
2.17.2
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