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openvswitch: Additional logging for -EINVAL on flow setups.

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There are many possible ways that a flow can be invalid so we've
added logging for most of them. This adds logs for the remaining
possible cases so there isn't any ambiguity while debugging.

CC: Federico Iezzi <fiezzi@enter.it>
Signed-off-by: Jesse Gross <jesse@nicira.com>
Acked-by: Thomas Graf <tgraf@noironetworks.com>
Signed-off-by: Pravin B Shelar <pshelar@nicira.com>
This commit is contained in:
Jesse Gross 2014-10-06 05:08:38 -07:00 committed by Pravin B Shelar
parent 1b760fb9a8
commit 426cda5cc1
2 changed files with 22 additions and 7 deletions
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12
net/openvswitch/datapath.c
View file

@ -817,10 +817,14 @@ static int ovs_flow_cmd_new(struct sk_buff *skb, struct genl_info *info)
/* Must have key and actions. */
error = -EINVAL;
if (!a[OVS_FLOW_ATTR_KEY])
if (!a[OVS_FLOW_ATTR_KEY]) {
OVS_NLERR("Flow key attribute not present in new flow.\n");
goto error;
if (!a[OVS_FLOW_ATTR_ACTIONS])
}
if (!a[OVS_FLOW_ATTR_ACTIONS]) {
OVS_NLERR("Flow actions attribute not present in new flow.\n");
goto error;
}
/* Most of the time we need to allocate a new flow, do it before
* locking.
@ -979,8 +983,10 @@ static int ovs_flow_cmd_set(struct sk_buff *skb, struct genl_info *info)
/* Extract key. */
error = -EINVAL;
if (!a[OVS_FLOW_ATTR_KEY])
if (!a[OVS_FLOW_ATTR_KEY]) {
OVS_NLERR("Flow key attribute not present in set flow.\n");
goto error;
}
ovs_match_init(&match, &key, &mask);
error = ovs_nla_get_match(&match,

17
net/openvswitch/flow_netlink.c
View file

@ -581,10 +581,13 @@ static int metadata_from_nlattrs(struct sw_flow_match *match, u64 *attrs,
if (*attrs & (1 << OVS_KEY_ATTR_IN_PORT)) {
u32 in_port = nla_get_u32(a[OVS_KEY_ATTR_IN_PORT]);
if (is_mask)
if (is_mask) {
in_port = 0xffffffff; /* Always exact match in_port. */
else if (in_port >= DP_MAX_PORTS)
} else if (in_port >= DP_MAX_PORTS) {
OVS_NLERR("Port (%d) exceeds maximum allowable (%d).\n",
in_port, DP_MAX_PORTS);
return -EINVAL;
}
SW_FLOW_KEY_PUT(match, phy.in_port, in_port, is_mask);
*attrs &= ~(1 << OVS_KEY_ATTR_IN_PORT);
@ -824,8 +827,11 @@ static int ovs_key_from_nlattrs(struct sw_flow_match *match, u64 attrs,
attrs &= ~(1 << OVS_KEY_ATTR_ND);
}
if (attrs != 0)
if (attrs != 0) {
OVS_NLERR("Unknown key attributes (%llx).\n",
(unsigned long long)attrs);
return -EINVAL;
}
return 0;
}
@ -1250,8 +1256,10 @@ struct sw_flow_actions *ovs_nla_alloc_flow_actions(int size)
{
struct sw_flow_actions *sfa;
if (size > MAX_ACTIONS_BUFSIZE)
if (size > MAX_ACTIONS_BUFSIZE) {
OVS_NLERR("Flow action size (%u bytes) exceeds maximum", size);
return ERR_PTR(-EINVAL);
}
sfa = kmalloc(sizeof(*sfa) + size, GFP_KERNEL);
if (!sfa)
@ -1786,6 +1794,7 @@ static int ovs_nla_copy_actions__(const struct nlattr *attr,
break;
default:
OVS_NLERR("Unknown tunnel attribute (%d).\n", type);
return -EINVAL;
}
if (!skip_copy) {