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Date: Wed, 13 Jun 2012 14:54:58 +0200
From: Thomas Graf <tgraf@...g.ch>
To: davem@...emloft.net
Cc: netdev@...r.kernel.org, lucy.liu@...el.com,
john.r.fastabend@...el.com, alexander.h.duyck@...el.com
Subject: [PATCH 5/8] dcbnl: Return consistent error codes
EMSGSIZE - ran out of space while constructing message
EOPNOTSUPP - driver/hardware does not support operation
ENODEV - network device not found
EINVAL - invalid message
Signed-off-by: Thomas Graf <tgraf@...g.ch>
---
net/dcb/dcbnl.c | 273 ++++++++++++++++++++++++++++---------------------------
1 files changed, 138 insertions(+), 135 deletions(-)
diff --git a/net/dcb/dcbnl.c b/net/dcb/dcbnl.c
index 4d9e0ef..5a5bc25 100644
--- a/net/dcb/dcbnl.c
+++ b/net/dcb/dcbnl.c
@@ -229,7 +229,7 @@ static int dcbnl_getstate(struct net_device *netdev, struct nlmsghdr *nlh,
{
/* if (!tb[DCB_ATTR_STATE] || !netdev->dcbnl_ops->getstate) */
if (!netdev->dcbnl_ops->getstate)
- return -EINVAL;
+ return -EOPNOTSUPP;
return nla_put_u8(skb, DCB_ATTR_STATE,
netdev->dcbnl_ops->getstate(netdev));
@@ -240,22 +240,25 @@ static int dcbnl_getpfccfg(struct net_device *netdev, struct nlmsghdr *nlh,
{
struct nlattr *data[DCB_PFC_UP_ATTR_MAX + 1], *nest;
u8 value;
- int ret = -EINVAL;
+ int ret;
int i;
int getall = 0;
- if (!tb[DCB_ATTR_PFC_CFG] || !netdev->dcbnl_ops->getpfccfg)
- return ret;
+ if (!tb[DCB_ATTR_PFC_CFG])
+ return -EINVAL;
+
+ if (!netdev->dcbnl_ops->getpfccfg)
+ return -EOPNOTSUPP;
ret = nla_parse_nested(data, DCB_PFC_UP_ATTR_MAX,
tb[DCB_ATTR_PFC_CFG],
dcbnl_pfc_up_nest);
if (ret)
- goto err;
+ return ret;
nest = nla_nest_start(skb, DCB_ATTR_PFC_CFG);
if (!nest)
- goto err;
+ return -EMSGSIZE;
if (data[DCB_PFC_UP_ATTR_ALL])
getall = 1;
@@ -269,14 +272,12 @@ static int dcbnl_getpfccfg(struct net_device *netdev, struct nlmsghdr *nlh,
ret = nla_put_u8(skb, i, value);
if (ret) {
nla_nest_cancel(skb, nest);
- goto err;
+ return ret;
}
}
nla_nest_end(skb, nest);
return 0;
-err:
- return -EINVAL;
}
static int dcbnl_getperm_hwaddr(struct net_device *netdev, struct nlmsghdr *nlh,
@@ -285,7 +286,7 @@ static int dcbnl_getperm_hwaddr(struct net_device *netdev, struct nlmsghdr *nlh,
u8 perm_addr[MAX_ADDR_LEN];
if (!netdev->dcbnl_ops->getpermhwaddr)
- return -EINVAL;
+ return -EOPNOTSUPP;
netdev->dcbnl_ops->getpermhwaddr(netdev, perm_addr);
@@ -297,21 +298,24 @@ static int dcbnl_getcap(struct net_device *netdev, struct nlmsghdr *nlh,
{
struct nlattr *data[DCB_CAP_ATTR_MAX + 1], *nest;
u8 value;
- int ret = -EINVAL;
+ int ret;
int i;
int getall = 0;
- if (!tb[DCB_ATTR_CAP] || !netdev->dcbnl_ops->getcap)
- return ret;
+ if (!tb[DCB_ATTR_CAP])
+ return -EINVAL;
+
+ if (!netdev->dcbnl_ops->getcap)
+ return -EOPNOTSUPP;
ret = nla_parse_nested(data, DCB_CAP_ATTR_MAX, tb[DCB_ATTR_CAP],
dcbnl_cap_nest);
if (ret)
- goto err_out;
+ return ret;
nest = nla_nest_start(skb, DCB_ATTR_CAP);
if (!nest)
- goto err_out;
+ return -EMSGSIZE;
if (data[DCB_CAP_ATTR_ALL])
getall = 1;
@@ -324,15 +328,13 @@ static int dcbnl_getcap(struct net_device *netdev, struct nlmsghdr *nlh,
ret = nla_put_u8(skb, i, value);
if (ret) {
nla_nest_cancel(skb, nest);
- goto err_out;
+ return ret;
}
}
}
nla_nest_end(skb, nest);
return 0;
-err_out:
- return -EINVAL;
}
static int dcbnl_getnumtcs(struct net_device *netdev, struct nlmsghdr *nlh,
@@ -340,25 +342,24 @@ static int dcbnl_getnumtcs(struct net_device *netdev, struct nlmsghdr *nlh,
{
struct nlattr *data[DCB_NUMTCS_ATTR_MAX + 1], *nest;
u8 value;
- int ret = -EINVAL;
+ int ret;
int i;
int getall = 0;
- if (!tb[DCB_ATTR_NUMTCS] || !netdev->dcbnl_ops->getnumtcs)
- return ret;
+ if (!tb[DCB_ATTR_NUMTCS])
+ return -EINVAL;
+
+ if (!netdev->dcbnl_ops->getnumtcs)
+ return -EOPNOTSUPP;
ret = nla_parse_nested(data, DCB_NUMTCS_ATTR_MAX, tb[DCB_ATTR_NUMTCS],
dcbnl_numtcs_nest);
- if (ret) {
- ret = -EINVAL;
- goto err_out;
- }
+ if (ret)
+ return ret;
nest = nla_nest_start(skb, DCB_ATTR_NUMTCS);
- if (!nest) {
- ret = -EINVAL;
- goto err_out;
- }
+ if (!nest)
+ return -EMSGSIZE;
if (data[DCB_NUMTCS_ATTR_ALL])
getall = 1;
@@ -372,36 +373,34 @@ static int dcbnl_getnumtcs(struct net_device *netdev, struct nlmsghdr *nlh,
ret = nla_put_u8(skb, i, value);
if (ret) {
nla_nest_cancel(skb, nest);
- ret = -EINVAL;
- goto err_out;
+ return ret;
}
- } else {
- goto err_out;
- }
+ } else
+ return -EINVAL;
}
nla_nest_end(skb, nest);
return 0;
-err_out:
- return ret;
}
static int dcbnl_setnumtcs(struct net_device *netdev, struct nlmsghdr *nlh,
u32 seq, struct nlattr **tb, struct sk_buff *skb)
{
struct nlattr *data[DCB_NUMTCS_ATTR_MAX + 1];
- int ret = -EINVAL;
+ int ret;
u8 value;
int i;
- if (!tb[DCB_ATTR_NUMTCS] || !netdev->dcbnl_ops->setnumtcs)
- return ret;
+ if (!tb[DCB_ATTR_NUMTCS])
+ return -EINVAL;
+
+ if (!netdev->dcbnl_ops->setnumtcs)
+ return -EOPNOTSUPP;
ret = nla_parse_nested(data, DCB_NUMTCS_ATTR_MAX, tb[DCB_ATTR_NUMTCS],
dcbnl_numtcs_nest);
-
if (ret)
- return -EINVAL;
+ return ret;
for (i = DCB_NUMTCS_ATTR_ALL+1; i <= DCB_NUMTCS_ATTR_MAX; i++) {
if (data[i] == NULL)
@@ -421,7 +420,7 @@ static int dcbnl_getpfcstate(struct net_device *netdev, struct nlmsghdr *nlh,
u32 seq, struct nlattr **tb, struct sk_buff *skb)
{
if (!netdev->dcbnl_ops->getpfcstate)
- return -EINVAL;
+ return -EOPNOTSUPP;
return nla_put_u8(skb, DCB_ATTR_PFC_STATE,
netdev->dcbnl_ops->getpfcstate(netdev));
@@ -432,9 +431,12 @@ static int dcbnl_setpfcstate(struct net_device *netdev, struct nlmsghdr *nlh,
{
u8 value;
- if (!tb[DCB_ATTR_PFC_STATE] || !netdev->dcbnl_ops->setpfcstate)
+ if (!tb[DCB_ATTR_PFC_STATE])
return -EINVAL;
+ if (!netdev->dcbnl_ops->setpfcstate)
+ return -EOPNOTSUPP;
+
value = nla_get_u8(tb[DCB_ATTR_PFC_STATE]);
netdev->dcbnl_ops->setpfcstate(netdev, value);
@@ -449,27 +451,26 @@ static int dcbnl_getapp(struct net_device *netdev, struct nlmsghdr *nlh,
struct nlattr *app_tb[DCB_APP_ATTR_MAX + 1];
u16 id;
u8 up, idtype;
- int ret = -EINVAL;
+ int ret;
if (!tb[DCB_ATTR_APP])
- goto out;
+ return -EINVAL;
ret = nla_parse_nested(app_tb, DCB_APP_ATTR_MAX, tb[DCB_ATTR_APP],
dcbnl_app_nest);
if (ret)
- goto out;
+ return ret;
- ret = -EINVAL;
/* all must be non-null */
if ((!app_tb[DCB_APP_ATTR_IDTYPE]) ||
(!app_tb[DCB_APP_ATTR_ID]))
- goto out;
+ return -EINVAL;
/* either by eth type or by socket number */
idtype = nla_get_u8(app_tb[DCB_APP_ATTR_IDTYPE]);
if ((idtype != DCB_APP_IDTYPE_ETHTYPE) &&
(idtype != DCB_APP_IDTYPE_PORTNUM))
- goto out;
+ return -EINVAL;
id = nla_get_u16(app_tb[DCB_APP_ATTR_ID]);
@@ -485,7 +486,7 @@ static int dcbnl_getapp(struct net_device *netdev, struct nlmsghdr *nlh,
app_nest = nla_nest_start(skb, DCB_ATTR_APP);
if (!app_nest)
- goto out;
+ return -EMSGSIZE;
ret = nla_put_u8(skb, DCB_APP_ATTR_IDTYPE, idtype);
if (ret)
@@ -501,59 +502,57 @@ static int dcbnl_getapp(struct net_device *netdev, struct nlmsghdr *nlh,
nla_nest_end(skb, app_nest);
- goto out;
+ return 0;
out_cancel:
nla_nest_cancel(skb, app_nest);
-out:
return ret;
}
static int dcbnl_setapp(struct net_device *netdev, struct nlmsghdr *nlh,
u32 seq, struct nlattr **tb, struct sk_buff *skb)
{
- int err, ret = -EINVAL;
+ int ret;
u16 id;
u8 up, idtype;
struct nlattr *app_tb[DCB_APP_ATTR_MAX + 1];
if (!tb[DCB_ATTR_APP])
- goto out;
+ return -EINVAL;
ret = nla_parse_nested(app_tb, DCB_APP_ATTR_MAX, tb[DCB_ATTR_APP],
dcbnl_app_nest);
if (ret)
- goto out;
+ return ret;
- ret = -EINVAL;
/* all must be non-null */
if ((!app_tb[DCB_APP_ATTR_IDTYPE]) ||
(!app_tb[DCB_APP_ATTR_ID]) ||
(!app_tb[DCB_APP_ATTR_PRIORITY]))
- goto out;
+ return -EINVAL;
/* either by eth type or by socket number */
idtype = nla_get_u8(app_tb[DCB_APP_ATTR_IDTYPE]);
if ((idtype != DCB_APP_IDTYPE_ETHTYPE) &&
(idtype != DCB_APP_IDTYPE_PORTNUM))
- goto out;
+ return -EINVAL;
id = nla_get_u16(app_tb[DCB_APP_ATTR_ID]);
up = nla_get_u8(app_tb[DCB_APP_ATTR_PRIORITY]);
if (netdev->dcbnl_ops->setapp) {
- err = netdev->dcbnl_ops->setapp(netdev, idtype, id, up);
+ ret = netdev->dcbnl_ops->setapp(netdev, idtype, id, up);
} else {
struct dcb_app app;
app.selector = idtype;
app.protocol = id;
app.priority = up;
- err = dcb_setapp(netdev, &app);
+ ret = dcb_setapp(netdev, &app);
}
ret = nla_put_u8(skb, DCB_ATTR_APP, ret);
dcbnl_cee_notify(netdev, RTM_SETDCB, DCB_CMD_SAPP, seq, 0);
-out:
+
return ret;
}
@@ -564,26 +563,27 @@ static int __dcbnl_pg_getcfg(struct net_device *netdev, struct nlmsghdr *nlh,
struct nlattr *pg_tb[DCB_PG_ATTR_MAX + 1];
struct nlattr *param_tb[DCB_TC_ATTR_PARAM_MAX + 1];
u8 prio, pgid, tc_pct, up_map;
- int ret = -EINVAL;
+ int ret;
int getall = 0;
int i;
- if (!tb[DCB_ATTR_PG_CFG] ||
- !netdev->dcbnl_ops->getpgtccfgtx ||
+ if (!tb[DCB_ATTR_PG_CFG])
+ return -EINVAL;
+
+ if (!netdev->dcbnl_ops->getpgtccfgtx ||
!netdev->dcbnl_ops->getpgtccfgrx ||
!netdev->dcbnl_ops->getpgbwgcfgtx ||
!netdev->dcbnl_ops->getpgbwgcfgrx)
- return ret;
+ return -EOPNOTSUPP;
ret = nla_parse_nested(pg_tb, DCB_PG_ATTR_MAX,
tb[DCB_ATTR_PG_CFG], dcbnl_pg_nest);
-
if (ret)
- goto err_out;
+ return ret;
pg_nest = nla_nest_start(skb, DCB_ATTR_PG_CFG);
if (!pg_nest)
- goto err_out;
+ return -EMSGSIZE;
if (pg_tb[DCB_PG_ATTR_TC_ALL])
getall = 1;
@@ -674,7 +674,6 @@ static int __dcbnl_pg_getcfg(struct net_device *netdev, struct nlmsghdr *nlh,
i - DCB_PG_ATTR_BW_ID_0, &tc_pct);
}
ret = nla_put_u8(skb, i, tc_pct);
-
if (ret)
goto err_pg;
}
@@ -687,9 +686,8 @@ err_param:
nla_nest_cancel(skb, param_nest);
err_pg:
nla_nest_cancel(skb, pg_nest);
-err_out:
- ret = -EINVAL;
- return ret;
+
+ return -EMSGSIZE;
}
static int dcbnl_pgtx_getcfg(struct net_device *netdev, struct nlmsghdr *nlh,
@@ -709,9 +707,12 @@ static int dcbnl_setstate(struct net_device *netdev, struct nlmsghdr *nlh,
{
u8 value;
- if (!tb[DCB_ATTR_STATE] || !netdev->dcbnl_ops->setstate)
+ if (!tb[DCB_ATTR_STATE])
return -EINVAL;
+ if (!netdev->dcbnl_ops->setstate)
+ return -EOPNOTSUPP;
+
value = nla_get_u8(tb[DCB_ATTR_STATE]);
return nla_put_u8(skb, DCB_ATTR_STATE,
@@ -723,17 +724,20 @@ static int dcbnl_setpfccfg(struct net_device *netdev, struct nlmsghdr *nlh,
{
struct nlattr *data[DCB_PFC_UP_ATTR_MAX + 1];
int i;
- int ret = -EINVAL;
+ int ret;
u8 value;
- if (!tb[DCB_ATTR_PFC_CFG] || !netdev->dcbnl_ops->setpfccfg)
- return ret;
+ if (!tb[DCB_ATTR_PFC_CFG])
+ return -EINVAL;
+
+ if (!netdev->dcbnl_ops->setpfccfg)
+ return -EOPNOTSUPP;
ret = nla_parse_nested(data, DCB_PFC_UP_ATTR_MAX,
tb[DCB_ATTR_PFC_CFG],
dcbnl_pfc_up_nest);
if (ret)
- goto err;
+ return ret;
for (i = DCB_PFC_UP_ATTR_0; i <= DCB_PFC_UP_ATTR_7; i++) {
if (data[i] == NULL)
@@ -744,17 +748,18 @@ static int dcbnl_setpfccfg(struct net_device *netdev, struct nlmsghdr *nlh,
}
return nla_put_u8(skb, DCB_ATTR_PFC_CFG, 0);
-err:
- return ret;
}
static int dcbnl_setall(struct net_device *netdev, struct nlmsghdr *nlh,
u32 seq, struct nlattr **tb, struct sk_buff *skb)
{
- int ret = -EINVAL;
+ int ret;
- if (!tb[DCB_ATTR_SET_ALL] || !netdev->dcbnl_ops->setall)
- return ret;
+ if (!tb[DCB_ATTR_SET_ALL])
+ return -EINVAL;
+
+ if (!netdev->dcbnl_ops->setall)
+ return -EOPNOTSUPP;
ret = nla_put_u8(skb, DCB_ATTR_SET_ALL,
netdev->dcbnl_ops->setall(netdev));
@@ -769,24 +774,26 @@ static int __dcbnl_pg_setcfg(struct net_device *netdev, struct nlmsghdr *nlh,
{
struct nlattr *pg_tb[DCB_PG_ATTR_MAX + 1];
struct nlattr *param_tb[DCB_TC_ATTR_PARAM_MAX + 1];
- int ret = -EINVAL;
+ int ret;
int i;
u8 pgid;
u8 up_map;
u8 prio;
u8 tc_pct;
- if (!tb[DCB_ATTR_PG_CFG] ||
- !netdev->dcbnl_ops->setpgtccfgtx ||
+ if (!tb[DCB_ATTR_PG_CFG])
+ return -EINVAL;
+
+ if (!netdev->dcbnl_ops->setpgtccfgtx ||
!netdev->dcbnl_ops->setpgtccfgrx ||
!netdev->dcbnl_ops->setpgbwgcfgtx ||
!netdev->dcbnl_ops->setpgbwgcfgrx)
- return ret;
+ return -EOPNOTSUPP;
ret = nla_parse_nested(pg_tb, DCB_PG_ATTR_MAX,
tb[DCB_ATTR_PG_CFG], dcbnl_pg_nest);
if (ret)
- goto err;
+ return ret;
for (i = DCB_PG_ATTR_TC_0; i <= DCB_PG_ATTR_TC_7; i++) {
if (!pg_tb[i])
@@ -795,7 +802,7 @@ static int __dcbnl_pg_setcfg(struct net_device *netdev, struct nlmsghdr *nlh,
ret = nla_parse_nested(param_tb, DCB_TC_ATTR_PARAM_MAX,
pg_tb[i], dcbnl_tc_param_nest);
if (ret)
- goto err;
+ return ret;
pgid = DCB_ATTR_VALUE_UNDEFINED;
prio = DCB_ATTR_VALUE_UNDEFINED;
@@ -848,10 +855,8 @@ static int __dcbnl_pg_setcfg(struct net_device *netdev, struct nlmsghdr *nlh,
}
}
- ret = nla_put_u8(skb, (dir ? DCB_CMD_PGRX_SCFG : DCB_CMD_PGTX_SCFG), 0);
-
-err:
- return ret;
+ return nla_put_u8(skb,
+ (dir ? DCB_CMD_PGRX_SCFG : DCB_CMD_PGTX_SCFG), 0);
}
static int dcbnl_pgtx_setcfg(struct net_device *netdev, struct nlmsghdr *nlh,
@@ -873,23 +878,25 @@ static int dcbnl_bcn_getcfg(struct net_device *netdev, struct nlmsghdr *nlh,
struct nlattr *bcn_tb[DCB_BCN_ATTR_MAX + 1];
u8 value_byte;
u32 value_integer;
- int ret = -EINVAL;
+ int ret;
bool getall = false;
int i;
- if (!tb[DCB_ATTR_BCN] || !netdev->dcbnl_ops->getbcnrp ||
+ if (!tb[DCB_ATTR_BCN])
+ return -EINVAL;
+
+ if (!netdev->dcbnl_ops->getbcnrp ||
!netdev->dcbnl_ops->getbcncfg)
- return ret;
+ return -EOPNOTSUPP;
ret = nla_parse_nested(bcn_tb, DCB_BCN_ATTR_MAX,
tb[DCB_ATTR_BCN], dcbnl_bcn_nest);
-
if (ret)
- goto err_out;
+ return ret;
bcn_nest = nla_nest_start(skb, DCB_ATTR_BCN);
if (!bcn_nest)
- goto err_out;
+ return -EMSGSIZE;
if (bcn_tb[DCB_BCN_ATTR_ALL])
getall = true;
@@ -922,8 +929,6 @@ static int dcbnl_bcn_getcfg(struct net_device *netdev, struct nlmsghdr *nlh,
err_bcn:
nla_nest_cancel(skb, bcn_nest);
-err_out:
- ret = -EINVAL;
return ret;
}
@@ -932,19 +937,22 @@ static int dcbnl_bcn_setcfg(struct net_device *netdev, struct nlmsghdr *nlh,
{
struct nlattr *data[DCB_BCN_ATTR_MAX + 1];
int i;
- int ret = -EINVAL;
+ int ret;
u8 value_byte;
u32 value_int;
- if (!tb[DCB_ATTR_BCN] || !netdev->dcbnl_ops->setbcncfg ||
+ if (!tb[DCB_ATTR_BCN])
+ return -EINVAL;
+
+ if (!netdev->dcbnl_ops->setbcncfg ||
!netdev->dcbnl_ops->setbcnrp)
- return ret;
+ return -EOPNOTSUPP;
ret = nla_parse_nested(data, DCB_BCN_ATTR_MAX,
tb[DCB_ATTR_BCN],
dcbnl_pfc_up_nest);
if (ret)
- goto err;
+ return ret;
for (i = DCB_BCN_ATTR_RP_0; i <= DCB_BCN_ATTR_RP_7; i++) {
if (data[i] == NULL)
@@ -962,9 +970,7 @@ static int dcbnl_bcn_setcfg(struct net_device *netdev, struct nlmsghdr *nlh,
i, value_int);
}
- ret = nla_put_u8(skb, DCB_ATTR_BCN, 0);
-err:
- return ret;
+ return nla_put_u8(skb, DCB_ATTR_BCN, 0);
}
static int dcbnl_build_peer_app(struct net_device *netdev, struct sk_buff* skb,
@@ -1030,20 +1036,21 @@ static int dcbnl_ieee_fill(struct sk_buff *skb, struct net_device *netdev)
struct dcb_app_type *itr;
const struct dcbnl_rtnl_ops *ops = netdev->dcbnl_ops;
int dcbx;
- int err = -EMSGSIZE;
+ int err;
if (nla_put_string(skb, DCB_ATTR_IFNAME, netdev->name))
- goto nla_put_failure;
+ return -EMSGSIZE;
+
ieee = nla_nest_start(skb, DCB_ATTR_IEEE);
if (!ieee)
- goto nla_put_failure;
+ return -EMSGSIZE;
if (ops->ieee_getets) {
struct ieee_ets ets;
err = ops->ieee_getets(netdev, &ets);
if (!err &&
nla_put(skb, DCB_ATTR_IEEE_ETS, sizeof(ets), &ets))
- goto nla_put_failure;
+ return -EMSGSIZE;
}
if (ops->ieee_getmaxrate) {
@@ -1053,7 +1060,7 @@ static int dcbnl_ieee_fill(struct sk_buff *skb, struct net_device *netdev)
err = nla_put(skb, DCB_ATTR_IEEE_MAXRATE,
sizeof(maxrate), &maxrate);
if (err)
- goto nla_put_failure;
+ return -EMSGSIZE;
}
}
@@ -1062,12 +1069,12 @@ static int dcbnl_ieee_fill(struct sk_buff *skb, struct net_device *netdev)
err = ops->ieee_getpfc(netdev, &pfc);
if (!err &&
nla_put(skb, DCB_ATTR_IEEE_PFC, sizeof(pfc), &pfc))
- goto nla_put_failure;
+ return -EMSGSIZE;
}
app = nla_nest_start(skb, DCB_ATTR_IEEE_APP_TABLE);
if (!app)
- goto nla_put_failure;
+ return -EMSGSIZE;
spin_lock(&dcb_lock);
list_for_each_entry(itr, &dcb_app_list, list) {
@@ -1076,7 +1083,7 @@ static int dcbnl_ieee_fill(struct sk_buff *skb, struct net_device *netdev)
&itr->app);
if (err) {
spin_unlock(&dcb_lock);
- goto nla_put_failure;
+ return -EMSGSIZE;
}
}
}
@@ -1095,7 +1102,7 @@ static int dcbnl_ieee_fill(struct sk_buff *skb, struct net_device *netdev)
err = ops->ieee_peer_getets(netdev, &ets);
if (!err &&
nla_put(skb, DCB_ATTR_IEEE_PEER_ETS, sizeof(ets), &ets))
- goto nla_put_failure;
+ return -EMSGSIZE;
}
if (ops->ieee_peer_getpfc) {
@@ -1103,7 +1110,7 @@ static int dcbnl_ieee_fill(struct sk_buff *skb, struct net_device *netdev)
err = ops->ieee_peer_getpfc(netdev, &pfc);
if (!err &&
nla_put(skb, DCB_ATTR_IEEE_PEER_PFC, sizeof(pfc), &pfc))
- goto nla_put_failure;
+ return -EMSGSIZE;
}
if (ops->peer_getappinfo && ops->peer_getapptable) {
@@ -1112,20 +1119,17 @@ static int dcbnl_ieee_fill(struct sk_buff *skb, struct net_device *netdev)
DCB_ATTR_IEEE_APP_UNSPEC,
DCB_ATTR_IEEE_APP);
if (err)
- goto nla_put_failure;
+ return -EMSGSIZE;
}
nla_nest_end(skb, ieee);
if (dcbx >= 0) {
err = nla_put_u8(skb, DCB_ATTR_DCBX, dcbx);
if (err)
- goto nla_put_failure;
+ return -EMSGSIZE;
}
return 0;
-
-nla_put_failure:
- return err;
}
static int dcbnl_cee_pg_fill(struct sk_buff *skb, struct net_device *dev,
@@ -1137,13 +1141,13 @@ static int dcbnl_cee_pg_fill(struct sk_buff *skb, struct net_device *dev,
struct nlattr *pg = nla_nest_start(skb, i);
if (!pg)
- goto nla_put_failure;
+ return -EMSGSIZE;
for (i = DCB_PG_ATTR_TC_0; i <= DCB_PG_ATTR_TC_7; i++) {
struct nlattr *tc_nest = nla_nest_start(skb, i);
if (!tc_nest)
- goto nla_put_failure;
+ return -EMSGSIZE;
pgid = DCB_ATTR_VALUE_UNDEFINED;
prio = DCB_ATTR_VALUE_UNDEFINED;
@@ -1161,7 +1165,7 @@ static int dcbnl_cee_pg_fill(struct sk_buff *skb, struct net_device *dev,
nla_put_u8(skb, DCB_TC_ATTR_PARAM_UP_MAPPING, up_map) ||
nla_put_u8(skb, DCB_TC_ATTR_PARAM_STRICT_PRIO, prio) ||
nla_put_u8(skb, DCB_TC_ATTR_PARAM_BW_PCT, tc_pct))
- goto nla_put_failure;
+ return -EMSGSIZE;
nla_nest_end(skb, tc_nest);
}
@@ -1175,13 +1179,10 @@ static int dcbnl_cee_pg_fill(struct sk_buff *skb, struct net_device *dev,
ops->getpgbwgcfgtx(dev, i - DCB_PG_ATTR_BW_ID_0,
&tc_pct);
if (nla_put_u8(skb, i, tc_pct))
- goto nla_put_failure;
+ return -EMSGSIZE;
}
nla_nest_end(skb, pg);
return 0;
-
-nla_put_failure:
- return -EMSGSIZE;
}
static int dcbnl_cee_fill(struct sk_buff *skb, struct net_device *netdev)
@@ -1380,10 +1381,10 @@ static int dcbnl_ieee_set(struct net_device *netdev, struct nlmsghdr *nlh,
{
const struct dcbnl_rtnl_ops *ops = netdev->dcbnl_ops;
struct nlattr *ieee[DCB_ATTR_IEEE_MAX + 1];
- int err = -EOPNOTSUPP;
+ int err;
if (!ops)
- return err;
+ return -EOPNOTSUPP;
if (!tb[DCB_ATTR_IEEE])
return -EINVAL;
@@ -1455,7 +1456,7 @@ static int dcbnl_ieee_del(struct net_device *netdev, struct nlmsghdr *nlh,
{
const struct dcbnl_rtnl_ops *ops = netdev->dcbnl_ops;
struct nlattr *ieee[DCB_ATTR_IEEE_MAX + 1];
- int err = -EOPNOTSUPP;
+ int err;
if (!ops)
return -EOPNOTSUPP;
@@ -1687,10 +1688,12 @@ static int dcb_doit(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg)
netdev = dev_get_by_name(&init_net, nla_data(tb[DCB_ATTR_IFNAME]));
if (!netdev)
- return -EINVAL;
+ return -ENODEV;
- if (!netdev->dcbnl_ops)
- goto errout;
+ if (!netdev->dcbnl_ops) {
+ ret = -EOPNOTSUPP;
+ goto out;
+ }
reply_skb = dcbnl_newmsg(fn->type, dcb->cmd, pid, nlh->nlmsg_seq,
nlh->nlmsg_flags, &reply_nlh);
--
1.7.7.6
--
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