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openflow-1.1+: OFPT_TABLE_MOD (part 1)

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Added infrastructure to support Openflow OFPT_TABLE_MOD message. This patch
does not include the flexible table miss handling code that is necessary to
support the semantics specified in OFPT_TABLE_MOD messages.

Current flow miss behavior continues to conform to Openflow 1.0.  Future
commits to add more flexible table miss support are needed to fully support
OPFT_TABLE_MOD for Openflow-1.1+.

Signed-off-by: Andy Zhou <azhou@nicira.com>
Signed-off-by: Ben Pfaff <blp@nicira.com>
This commit is contained in:
Andy Zhou
2013-09-07 03:02:32 -07:00
committed by Ben Pfaff
parent 451564513e
commit 918f2b8270
13 changed files with 287 additions and 3 deletions
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61
lib/ofp-util.c
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@@ -3660,7 +3660,7 @@ ofputil_encode_port_status(const struct ofputil_port_status *ps,
ofpmsg_update_length(b);
return b;
}
/* ofputil_port_mod */
/* Decodes the OpenFlow "port mod" message in '*oh' into an abstract form in
@@ -3742,7 +3742,66 @@ ofputil_encode_port_mod(const struct ofputil_port_mod *pm,
opm->advertise = netdev_port_features_to_ofp11(pm->advertise);
break;
}
default:
NOT_REACHED();
}
return b;
}
/* ofputil_table_mod */
/* Decodes the OpenFlow "table mod" message in '*oh' into an abstract form in
* '*pm'. Returns 0 if successful, otherwise an OFPERR_* value. */
enum ofperr
ofputil_decode_table_mod(const struct ofp_header *oh,
struct ofputil_table_mod *pm)
{
enum ofpraw raw;
struct ofpbuf b;
ofpbuf_use_const(&b, oh, ntohs(oh->length));
raw = ofpraw_pull_assert(&b);
if (raw == OFPRAW_OFPT11_TABLE_MOD) {
const struct ofp11_table_mod *otm = b.data;
pm->table_id = otm->table_id;
pm->config = ntohl(otm->config);
} else {
return OFPERR_OFPBRC_BAD_TYPE;
}
return 0;
}
/* Converts the abstract form of a "table mod" message in '*pm' into an OpenFlow
* message suitable for 'protocol', and returns that encoded form in a buffer
* owned by the caller. */
struct ofpbuf *
ofputil_encode_table_mod(const struct ofputil_table_mod *pm,
enum ofputil_protocol protocol)
{
enum ofp_version ofp_version = ofputil_protocol_to_ofp_version(protocol);
struct ofpbuf *b;
switch (ofp_version) {
case OFP10_VERSION: {
ovs_fatal(0, "table mod needs OpenFlow 1.1 or later "
"(\'-O OpenFlow11\')");
break;
}
case OFP11_VERSION:
case OFP12_VERSION:
case OFP13_VERSION: {
struct ofp11_table_mod *otm;
b = ofpraw_alloc(OFPRAW_OFPT11_TABLE_MOD, ofp_version, 0);
otm = ofpbuf_put_zeros(b, sizeof *otm);
otm->table_id = pm->table_id;
otm->config = htonl(pm->config);
break;
}
default:
NOT_REACHED();
}