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Make it more obvious that OVS_KEY_ATTR_MPLS may be an array

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Note that OVS_KEY_ATTR_MPLS may be an array of ovs_key_mpls
and that the acceptable length may be restricted by the implementation.

Currently the user-space datapath and proposed kernel datapath
implementation restrict the length to a single element.

Also update the mpls_top_lse name of the element of struct ovs_key_mpls,
as it is an array of LSEs and thus not necessarily just the top LSE.

As requested by Jesse Gross

Cc: Jesse Gross <jesse@nicira.com>
Signed-off-by: Simon Horman <horms@verge.net.au>
Signed-off-by: Jesse Gross <jesse@nicira.com>
This commit is contained in:
Simon Horman
2013-05-02 10:49:49 +09:00
committed by Jesse Gross
parent b82b19e938
commit 20131cefeb
2 changed files with 8 additions and 6 deletions
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6
include/linux/openvswitch.h
View File

@@ -287,7 +287,9 @@ enum ovs_key_attr {
OVS_KEY_ATTR_IPV4_TUNNEL, /* struct ovs_key_ipv4_tunnel */
#endif
OVS_KEY_ATTR_MPLS = 62, /* struct ovs_key_mpls */
OVS_KEY_ATTR_MPLS = 62, /* array of struct ovs_key_mpls.
* The implementation may restrict
* the accepted length of the array. */
__OVS_KEY_ATTR_MAX
};
@@ -330,7 +332,7 @@ struct ovs_key_ethernet {
};
struct ovs_key_mpls {
__be32 mpls_top_lse;
__be32 mpls_lse;
};
struct ovs_key_ipv4 {

8
lib/odp-util.c
View File

@@ -942,7 +942,7 @@ format_odp_key_attr(const struct nlattr *a, struct ds *ds)
case OVS_KEY_ATTR_MPLS: {
const struct ovs_key_mpls *mpls_key = nl_attr_get(a);
ds_put_char(ds, '(');
format_mpls_lse(ds, mpls_key->mpls_top_lse);
format_mpls_lse(ds, mpls_key->mpls_lse);
ds_put_char(ds, ')');
break;
}
@@ -1267,7 +1267,7 @@ parse_odp_key_attr(const char *s, const struct simap *port_names,
mpls = nl_msg_put_unspec_uninit(key, OVS_KEY_ATTR_MPLS,
sizeof *mpls);
mpls->mpls_top_lse = mpls_lse_from_components(label, tc, ttl, bos);
mpls->mpls_lse = mpls_lse_from_components(label, tc, ttl, bos);
return n;
}
}
@@ -1630,7 +1630,7 @@ odp_flow_key_from_flow(struct ofpbuf *buf, const struct flow *flow,
mpls_key = nl_msg_put_unspec_uninit(buf, OVS_KEY_ATTR_MPLS,
sizeof *mpls_key);
mpls_key->mpls_top_lse = flow->mpls_lse;
mpls_key->mpls_lse = flow->mpls_lse;
}
if (is_ip_any(flow) && !(flow->nw_frag & FLOW_NW_FRAG_LATER)) {
@@ -2285,7 +2285,7 @@ commit_mpls_action(const struct flow *flow, struct flow *base,
} else {
struct ovs_key_mpls mpls_key;
mpls_key.mpls_top_lse = flow->mpls_lse;
mpls_key.mpls_lse = flow->mpls_lse;
commit_set_action(odp_actions, OVS_KEY_ATTR_MPLS,
&mpls_key, sizeof(mpls_key));
}