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cxgb4: flower: use NL_SET_ERR_MSG_MOD for validation errors

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Replace netdev_{warn,err} with NL_SET_ERR_MSG_{FMT_,}MOD
to better inform the user about the problem.

Only compile-tested, no access to HW.

Signed-off-by: Asbjørn Sloth Tønnesen <ast@fiberby.net>
Link: https://lore.kernel.org/r/20240408165506.94483-1-ast@fiberby.net
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Asbjørn Sloth Tønnesen
2024-04-08 16:55:04 +00:00
committed by Jakub Kicinski
parent 9ef9ecfa9e
commit 545d95e5f1
1 changed files with 30 additions and 34 deletions
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64
drivers/net/ethernet/chelsio/cxgb4/cxgb4_tc_flower.c
View File

@@ -305,7 +305,7 @@ static void cxgb4_process_flow_match(struct net_device *dev,
fs->mask.iport = ~0;
}
static int cxgb4_validate_flow_match(struct net_device *dev,
static int cxgb4_validate_flow_match(struct netlink_ext_ack *extack,
struct flow_rule *rule)
{
struct flow_dissector *dissector = rule->match.dissector;
@@ -321,8 +321,9 @@ static int cxgb4_validate_flow_match(struct net_device *dev,
BIT_ULL(FLOW_DISSECTOR_KEY_ENC_KEYID) |
BIT_ULL(FLOW_DISSECTOR_KEY_VLAN) |
BIT_ULL(FLOW_DISSECTOR_KEY_IP))) {
netdev_warn(dev, "Unsupported key used: 0x%llx\n",
dissector->used_keys);
NL_SET_ERR_MSG_FMT_MOD(extack,
"Unsupported key used: 0x%llx",
dissector->used_keys);
return -EOPNOTSUPP;
}
@@ -339,13 +340,15 @@ static int cxgb4_validate_flow_match(struct net_device *dev,
struct flow_match_ip match;
if (eth_ip_type != ETH_P_IP && eth_ip_type != ETH_P_IPV6) {
netdev_err(dev, "IP Key supported only with IPv4/v6");
NL_SET_ERR_MSG_MOD(extack,
"IP Key supported only with IPv4/v6");
return -EINVAL;
}
flow_rule_match_ip(rule, &match);
if (match.mask->ttl) {
netdev_warn(dev, "ttl match unsupported for offload");
NL_SET_ERR_MSG_MOD(extack,
"ttl match unsupported for offload");
return -EOPNOTSUPP;
}
}
@@ -576,7 +579,7 @@ static bool valid_l4_mask(u32 mask)
return hi && lo ? false : true;
}
static bool valid_pedit_action(struct net_device *dev,
static bool valid_pedit_action(struct netlink_ext_ack *extack,
const struct flow_action_entry *act,
u8 *natmode_flags)
{
@@ -595,8 +598,7 @@ static bool valid_pedit_action(struct net_device *dev,
case PEDIT_ETH_SMAC_47_16:
break;
default:
netdev_err(dev, "%s: Unsupported pedit field\n",
__func__);
NL_SET_ERR_MSG_MOD(extack, "Unsupported pedit field");
return false;
}
break;
@@ -609,8 +611,7 @@ static bool valid_pedit_action(struct net_device *dev,
*natmode_flags |= CXGB4_ACTION_NATMODE_DIP;
break;
default:
netdev_err(dev, "%s: Unsupported pedit field\n",
__func__);
NL_SET_ERR_MSG_MOD(extack, "Unsupported pedit field");
return false;
}
break;
@@ -629,8 +630,7 @@ static bool valid_pedit_action(struct net_device *dev,
*natmode_flags |= CXGB4_ACTION_NATMODE_DIP;
break;
default:
netdev_err(dev, "%s: Unsupported pedit field\n",
__func__);
NL_SET_ERR_MSG_MOD(extack, "Unsupported pedit field");
return false;
}
break;
@@ -638,8 +638,8 @@ static bool valid_pedit_action(struct net_device *dev,
switch (offset) {
case PEDIT_TCP_SPORT_DPORT:
if (!valid_l4_mask(~mask)) {
netdev_err(dev, "%s: Unsupported mask for TCP L4 ports\n",
__func__);
NL_SET_ERR_MSG_MOD(extack,
"Unsupported mask for TCP L4 ports");
return false;
}
if (~mask & PEDIT_TCP_UDP_SPORT_MASK)
@@ -648,8 +648,7 @@ static bool valid_pedit_action(struct net_device *dev,
*natmode_flags |= CXGB4_ACTION_NATMODE_DPORT;
break;
default:
netdev_err(dev, "%s: Unsupported pedit field\n",
__func__);
NL_SET_ERR_MSG_MOD(extack, "Unsupported pedit field");
return false;
}
break;
@@ -657,8 +656,8 @@ static bool valid_pedit_action(struct net_device *dev,
switch (offset) {
case PEDIT_UDP_SPORT_DPORT:
if (!valid_l4_mask(~mask)) {
netdev_err(dev, "%s: Unsupported mask for UDP L4 ports\n",
__func__);
NL_SET_ERR_MSG_MOD(extack,
"Unsupported mask for UDP L4 ports");
return false;
}
if (~mask & PEDIT_TCP_UDP_SPORT_MASK)
@@ -667,13 +666,12 @@ static bool valid_pedit_action(struct net_device *dev,
*natmode_flags |= CXGB4_ACTION_NATMODE_DPORT;
break;
default:
netdev_err(dev, "%s: Unsupported pedit field\n",
__func__);
NL_SET_ERR_MSG_MOD(extack, "Unsupported pedit field");
return false;
}
break;
default:
netdev_err(dev, "%s: Unsupported pedit type\n", __func__);
NL_SET_ERR_MSG_MOD(extack, "Unsupported pedit type");
return false;
}
return true;
@@ -727,8 +725,7 @@ int cxgb4_validate_flow_actions(struct net_device *dev,
* the provided output port is not valid
*/
if (!found) {
netdev_err(dev, "%s: Out port invalid\n",
__func__);
NL_SET_ERR_MSG_MOD(extack, "Out port invalid");
return -EINVAL;
}
act_redir = true;
@@ -745,21 +742,21 @@ int cxgb4_validate_flow_actions(struct net_device *dev,
case FLOW_ACTION_VLAN_PUSH:
case FLOW_ACTION_VLAN_MANGLE:
if (proto != ETH_P_8021Q) {
netdev_err(dev, "%s: Unsupported vlan proto\n",
__func__);
NL_SET_ERR_MSG_MOD(extack,
"Unsupported vlan proto");
return -EOPNOTSUPP;
}
break;
default:
netdev_err(dev, "%s: Unsupported vlan action\n",
__func__);
NL_SET_ERR_MSG_MOD(extack,
"Unsupported vlan action");
return -EOPNOTSUPP;
}
act_vlan = true;
}
break;
case FLOW_ACTION_MANGLE: {
bool pedit_valid = valid_pedit_action(dev, act,
bool pedit_valid = valid_pedit_action(extack, act,
&natmode_flags);
if (!pedit_valid)
@@ -771,14 +768,14 @@ int cxgb4_validate_flow_actions(struct net_device *dev,
/* Do nothing. cxgb4_set_filter will validate */
break;
default:
netdev_err(dev, "%s: Unsupported action\n", __func__);
NL_SET_ERR_MSG_MOD(extack, "Unsupported action");
return -EOPNOTSUPP;
}
}
if ((act_pedit || act_vlan) && !act_redir) {
netdev_err(dev, "%s: pedit/vlan rewrite invalid without egress redirect\n",
__func__);
NL_SET_ERR_MSG_MOD(extack,
"pedit/vlan rewrite invalid without egress redirect");
return -EINVAL;
}
@@ -864,7 +861,7 @@ int cxgb4_flow_rule_replace(struct net_device *dev, struct flow_rule *rule,
if (cxgb4_validate_flow_actions(dev, &rule->action, extack, 0))
return -EOPNOTSUPP;
if (cxgb4_validate_flow_match(dev, rule))
if (cxgb4_validate_flow_match(extack, rule))
return -EOPNOTSUPP;
cxgb4_process_flow_match(dev, rule, fs);
@@ -901,8 +898,7 @@ int cxgb4_flow_rule_replace(struct net_device *dev, struct flow_rule *rule,
init_completion(&ctx.completion);
ret = __cxgb4_set_filter(dev, fidx, fs, &ctx);
if (ret) {
netdev_err(dev, "%s: filter creation err %d\n",
__func__, ret);
NL_SET_ERR_MSG_FMT_MOD(extack, "filter creation err %d", ret);
return ret;
}