[ovs-dev] [PATCH 05/14] ofp-util: Allow use of OpenFlow 12 flow format
Simon Horman
horms at verge.net.au
Fri Nov 16 02:07:23 UTC 2012
On Mon, Nov 12, 2012 at 09:57:26AM -0800, Ben Pfaff wrote:
> On Wed, Nov 07, 2012 at 05:03:03PM +0900, Simon Horman wrote:
> > This enables the use of the OpenFlow 12 flow format.
> >
> > Signed-off-by: Simon Horman <horms at verge.net.au>
>
> Based on "grep", I'm nervous that we're missing important handling for
> OFPUTIL_P_OF12 in a number of places. For example, it looks like
> ofputil_usable_protocols(), ofputil_encode_set_protocol(), and
> ofputil_flow_mod_usable_protocols() don't have any provisions for
> OF1.2. Do any of the later patches in this series fix those up? If so,
> then I guess we should try to fold them into this patch. If not, then
> we should probably fix them.
I believe that the version of ofputil_encode_set_protocol() in
the master branch already handles OFPUTIL_P_OF12. And I believe
that folding in a subsequent patch resolves the rest of the problems that
you raise.
----------------------------------------------------------------
ofp-util: Allow use of OpenFlow 12 flow format
This enables the use of the OpenFlow 12 flow format.
Signed-off-by: Simon Horman <horms at verge.net.au>
---
v5
* As suggested by Ben Pfaff:
- Fold "ofp-util: Open Flow 1.1 and 1.2 flow format capabilities"
into this patch
v4
* Rebase
---
lib/ofp-util.c | 32 ++++++++++++++++----------------
lib/ofp-util.h | 7 +++++--
tests/learn.at | 2 +-
tests/ovs-ofctl.at | 2 +-
4 files changed, 23 insertions(+), 20 deletions(-)
diff --git a/lib/ofp-util.c b/lib/ofp-util.c
index dea4aea..32244ce 100644
--- a/lib/ofp-util.c
+++ b/lib/ofp-util.c
@@ -726,7 +726,7 @@ ofputil_protocol_to_string(enum ofputil_protocol protocol)
return "OpenFlow10+table_id";
case OFPUTIL_P_OF12:
- return NULL;
+ return "OpenFlow12";
}
/* Check abbreviations. */
@@ -972,27 +972,27 @@ ofputil_usable_protocols(const struct match *match)
/* NXM and OF1.1+ supports bitwise matching on ethernet addresses. */
if (!eth_mask_is_exact(wc->masks.dl_src)
&& !eth_addr_is_zero(wc->masks.dl_src)) {
- return OFPUTIL_P_NXM_ANY;
+ return OFPUTIL_P_NXM_ANY_OR_OF11_PLUS;
}
if (!eth_mask_is_exact(wc->masks.dl_dst)
&& !eth_addr_is_zero(wc->masks.dl_dst)) {
- return OFPUTIL_P_NXM_ANY;
+ return OFPUTIL_P_NXM_ANY_OR_OF11_PLUS;
}
/* NXM and OF1.1+ support matching metadata. */
if (wc->masks.metadata != htonll(0)) {
- return OFPUTIL_P_NXM_ANY;
+ return OFPUTIL_P_NXM_ANY_OR_OF11_PLUS;
}
- /* Only NXM supports matching ARP hardware addresses. */
+ /* NXM and OF1.2 support matching ARP hardware addresses. */
if (!eth_addr_is_zero(wc->masks.arp_sha) ||
!eth_addr_is_zero(wc->masks.arp_tha)) {
- return OFPUTIL_P_NXM_ANY;
+ return OFPUTIL_P_NXM_ANY_OR_OF12;
}
- /* Only NXM supports matching IPv6 traffic. */
+ /* NXM and OF1.2 support matching IPv6 traffic. */
if (match->flow.dl_type == htons(ETH_TYPE_IPV6)) {
- return OFPUTIL_P_NXM_ANY;
+ return OFPUTIL_P_NXM_ANY_OR_OF12;
}
/* Only NXM supports matching registers. */
@@ -1010,14 +1010,14 @@ ofputil_usable_protocols(const struct match *match)
return OFPUTIL_P_NXM_ANY;
}
- /* Only NXM supports matching IPv6 flow label. */
+ /* NXM and OF1.2 support matching IPv6 flow label. */
if (wc->masks.ipv6_label) {
- return OFPUTIL_P_NXM_ANY;
+ return OFPUTIL_P_NXM_ANY_OR_OF12;
}
- /* Only NXM supports matching IP ECN bits. */
+ /* NXM and OF1.2 support matching IP ECN bits. */
if (wc->masks.nw_tos & IP_ECN_MASK) {
- return OFPUTIL_P_NXM_ANY;
+ return OFPUTIL_P_NXM_ANY_OR_OF12;
}
/* Only NXM supports matching IP TTL/hop limit. */
@@ -1025,9 +1025,9 @@ ofputil_usable_protocols(const struct match *match)
return OFPUTIL_P_NXM_ANY;
}
- /* Only NXM supports non-CIDR IPv4 address masks. */
+ /* NXM and OF1.1+ support non-CIDR IPv4 address masks. */
if (!ip_is_cidr(wc->masks.nw_src) || !ip_is_cidr(wc->masks.nw_dst)) {
- return OFPUTIL_P_NXM_ANY;
+ return OFPUTIL_P_NXM_ANY_OR_OF11_PLUS;
}
/* Only NXM supports bitwise matching on transport port. */
@@ -1597,9 +1597,9 @@ ofputil_flow_mod_usable_protocols(const struct ofputil_flow_mod *fms,
usable_protocols &= OFPUTIL_P_TID;
}
- /* Matching of the cookie is only supported through NXM. */
+ /* Matching of the cookie is only supporte through NXM and OF1.1+. */
if (fm->cookie_mask != htonll(0)) {
- usable_protocols &= OFPUTIL_P_NXM_ANY;
+ usable_protocols &= OFPUTIL_P_NXM_ANY_OR_OF11_PLUS;
}
}
assert(usable_protocols);
diff --git a/lib/ofp-util.h b/lib/ofp-util.h
index 4bd5a00..fa5df68 100644
--- a/lib/ofp-util.h
+++ b/lib/ofp-util.h
@@ -72,10 +72,13 @@ enum ofputil_protocol {
OFPUTIL_P_OF12 = 1 << 4, /* OpenFlow 1.2 flow format. */
/* All protocols. */
-#define OFPUTIL_P_ANY (OFPUTIL_P_OF10_ANY | OFPUTIL_P_NXM_ANY)
+#define OFPUTIL_P_ANY (OFPUTIL_P_OF10_ANY | OFPUTIL_P_NXM_ANY | OFPUTIL_P_OF12)
/* Protocols in which a specific table may be specified in flow_mods. */
-#define OFPUTIL_P_TID (OFPUTIL_P_OF10_TID | OFPUTIL_P_NXM_TID)
+#define OFPUTIL_P_TID (OFPUTIL_P_OF10_TID | OFPUTIL_P_NXM_TID | OFPUTIL_P_OF12)
+
+#define OFPUTIL_P_NXM_ANY_OR_OF12 (OFPUTIL_P_NXM_ANY | OFPUTIL_P_OF12)
+#define OFPUTIL_P_NXM_ANY_OR_OF11_PLUS OFPUTIL_P_NXM_ANY_OR_OF12
};
/* Protocols to use for flow dumps, from most to least preferred. */
diff --git a/tests/learn.at b/tests/learn.at
index adb67a4..78d0b59 100644
--- a/tests/learn.at
+++ b/tests/learn.at
@@ -24,7 +24,7 @@ table=0 actions=learn(table=1,hard_timeout=10, NXM_OF_VLAN_TCI[0..11],output:NXM
table=1 priority=0 actions=flood
]])
AT_CHECK([ovs-ofctl parse-flows flows.txt], [0],
-[[usable protocols: OpenFlow10+table_id,NXM+table_id
+[[usable protocols: OpenFlow10+table_id,NXM+table_id,OpenFlow12
chosen protocol: OpenFlow10+table_id
OFPT_FLOW_MOD (xid=0x1): ADD table:255 actions=learn(table=1,in_port=99,NXM_OF_ETH_DST[]=NXM_OF_ETH_SRC[],load:NXM_OF_IN_PORT[]->NXM_NX_REG1[16..31])
OFPT_FLOW_MOD (xid=0x2): ADD table:255 actions=learn(table=1,NXM_OF_VLAN_TCI[0..11],NXM_OF_ETH_DST[]=NXM_OF_ETH_SRC[],output:NXM_OF_IN_PORT[])
diff --git a/tests/ovs-ofctl.at b/tests/ovs-ofctl.at
index 958982f..d8017af 100644
--- a/tests/ovs-ofctl.at
+++ b/tests/ovs-ofctl.at
@@ -1866,7 +1866,7 @@ AT_CHECK([ovs-ofctl -F openflow10 add-flow dummy tun_id=123,actions=drop],
[1], [], [ovs-ofctl: none of the usable flow formats (NXM) is among the allowed flow formats (OpenFlow10)
])
AT_CHECK([ovs-ofctl -F openflow10 add-flow dummy metadata=123,actions=drop],
- [1], [], [ovs-ofctl: none of the usable flow formats (NXM) is among the allowed flow formats (OpenFlow10)
+ [1], [], [ovs-ofctl: none of the usable flow formats (NXM,OpenFlow12) is among the allowed flow formats (OpenFlow10)
])
AT_CLEANUP
--
1.7.10.4
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