[dpdk-dev] [PATCH v3 3/4] ethdev: add TTL change actions in flow API
Qi Zhang
qi.z.zhang at intel.com
Mon Apr 16 07:16:38 CEST 2018
Add couple OpenFlow frienldy TTL change actions.
RTE_FLOW_ACTION_MLPS_TTL_DEC - decrement MPLS TTL.
RTE_FLOW_ACTION_IP_TTL_DEC - decrement IP TTL.
RTE_FLOW_ACTION_TTL_COPY_OUT - copy TTL outwards.
RTE_FLOW_ACTION_TTL_COPY_IN - copy TTL inwards.
Signed-off-by: Qi Zhang <qi.z.zhang at intel.com>
---
app/test-pmd/cmdline_flow.c | 64 +++++++++++++++++++++++
doc/guides/prog_guide/rte_flow.rst | 80 +++++++++++++++++++++++++++++
doc/guides/testpmd_app_ug/testpmd_funcs.rst | 12 +++++
lib/librte_ether/rte_flow.h | 77 +++++++++++++++++++++++++++
4 files changed, 233 insertions(+)
diff --git a/app/test-pmd/cmdline_flow.c b/app/test-pmd/cmdline_flow.c
index a5e21c1fe..fa35ecc6d 100644
--- a/app/test-pmd/cmdline_flow.c
+++ b/app/test-pmd/cmdline_flow.c
@@ -190,6 +190,12 @@ enum index {
ACTION_VF_ID,
ACTION_METER,
ACTION_METER_ID,
+ ACTION_MPLS_TTL_DEC,
+ ACTION_MPLS_TTL_DEC_LVL,
+ ACTION_IP_TTL_DEC,
+ ACTION_IP_TTL_DEC_LVL,
+ ACTION_TTL_COPY_OUT,
+ ACTION_TTL_COPY_IN,
};
/** Size of pattern[] field in struct rte_flow_item_raw. */
@@ -654,6 +660,10 @@ static const enum index next_action[] = {
ACTION_PF,
ACTION_VF,
ACTION_METER,
+ ACTION_MPLS_TTL_DEC,
+ ACTION_IP_TTL_DEC,
+ ACTION_TTL_COPY_OUT,
+ ACTION_TTL_COPY_IN,
ZERO,
};
@@ -694,6 +704,16 @@ static const enum index action_meter[] = {
ZERO,
};
+static const enum index action_mpls_ttl_dec[] = {
+ ACTION_MPLS_TTL_DEC_LVL,
+ ZERO,
+};
+
+static const enum index action_ip_ttl_dec[] = {
+ ACTION_IP_TTL_DEC_LVL,
+ ZERO,
+};
+
static int parse_init(struct context *, const struct token *,
const char *, unsigned int,
void *, unsigned int);
@@ -1807,6 +1827,50 @@ static const struct token token_list[] = {
.args = ARGS(ARGS_ENTRY(struct rte_flow_action_meter, mtr_id)),
.call = parse_vc_conf,
},
+ [ACTION_MPLS_TTL_DEC] = {
+ .name = "mpls_ttl_dec",
+ .help = "decrement MPLS TTL",
+ .priv = PRIV_ACTION(MPLS_TTL_DEC,
+ sizeof(struct rte_flow_action_mpls_ttl_dec)),
+ .next = NEXT(action_mpls_ttl_dec),
+ .call = parse_vc,
+ },
+ [ACTION_MPLS_TTL_DEC_LVL] = {
+ .name = "level",
+ .help = "level of MPLS header",
+ .next = NEXT(action_mpls_ttl_dec, NEXT_ENTRY(UNSIGNED)),
+ .args = ARGS(ARGS_ENTRY(struct rte_flow_action_queue, index)),
+ .call = parse_vc,
+ },
+ [ACTION_IP_TTL_DEC] = {
+ .name = "ip_ttl_dec",
+ .help = "decrement IPv4 TTL or IPv6 Hop Limit",
+ .priv = PRIV_ACTION(MPLS_TTL_DEC,
+ sizeof(struct rte_flow_action_ip_ttl_dec)),
+ .next = NEXT(action_ip_ttl_dec),
+ .call = parse_vc,
+ },
+ [ACTION_IP_TTL_DEC_LVL] = {
+ .name = "level",
+ .help = "level of IPv4 or IPv6 header",
+ .next = NEXT(action_ip_ttl_dec, NEXT_ENTRY(UNSIGNED)),
+ .args = ARGS(ARGS_ENTRY(struct rte_flow_action_queue, index)),
+ .call = parse_vc,
+ },
+ [ACTION_TTL_COPY_OUT] = {
+ .name = "ttl_copy_out",
+ .help = "copy TTL outwards",
+ .priv = PRIV_ACTION(DROP, 0),
+ .next = NEXT(NEXT_ENTRY(ACTION_NEXT)),
+ .call = parse_vc,
+ },
+ [ACTION_TTL_COPY_IN] = {
+ .name = "ttl_copy_in",
+ .help = "copy TTL inwards",
+ .priv = PRIV_ACTION(DROP, 0),
+ .next = NEXT(NEXT_ENTRY(ACTION_NEXT)),
+ .call = parse_vc,
+ },
};
/** Remove and return last entry from argument stack. */
diff --git a/doc/guides/prog_guide/rte_flow.rst b/doc/guides/prog_guide/rte_flow.rst
index ea0e40a52..e81f0e375 100644
--- a/doc/guides/prog_guide/rte_flow.rst
+++ b/doc/guides/prog_guide/rte_flow.rst
@@ -1588,6 +1588,86 @@ contain respective protocol layer.
| ``mask`` | Bit-mask applied to new_val |
+---------------+-------------------------------------------------------------------+
+Action: ``MPLS_TTL_DEC``
+^^^^^^^^^^^^^^^^^^^^^^^^
+
+Decrement MPLS TTL, only applies to packets that contain specific MPLS
+headers.
+
+.. _table_rte_flow_action_mpls_ttl_dec:
+
+.. table:: MPLS_TTL_DEC
+
+ +---------------+---------------------------------------------+
+ | Field | Value |
+ +===============+=============================================+
+ | ``dir_level`` | Specify the level of MPLS header. |
+ | | direction (1b) |
+ | | 0: match start from outermost. |
+ | | 1: match start from innermost. |
+ | | level: (31b) |
+ | | 0: outermost or innermost MPLS header |
+ | | 1: next to outmost or innermost MPLS header |
+ | | 2: and so on ... |
+ +---------------+---------------------------------------------+
+
+Action: ``IP_TTL_DEC``
+^^^^^^^^^^^^^^^^^^^^^^
+
+Decrement IPv4 TTL or IPv6 hop limit field and update the IP checksum,
+only applies to packets that contain specific MPLS headers.
+
+.. _table_rte_flow_action_ip_ttl_dec:
+
+.. table:: IP_TTL_DEC
+
+ +---------------+----------------------------------------------------------+
+ | Field | Value |
+ +===============+==========================================================+
+ | ``dir_level`` | Specify the level of IPv4 or IPv6 header. |
+ | | direction (1b) |
+ | | 0: match start from outermost. |
+ | | 1: match start from innermost. |
+ | | level: (31b) |
+ | | 0: outermost or innermost Ipv4 or IPv6 header |
+ | | 1: next to outmost or innermost MPLS IPv4 or IPv6 header |
+ | | 2: and so on ... |
+ +---------------+----------------------------------------------------------+
+
+Action: ``TTL_COPY_OUT``
+^^^^^^^^^^^^^^^^^^^^^^^^
+
+Copy the TTL from next-to-outermost to outermost header with TTL, copy can
+be IP to IP, MPLS to MPLS or IP to MPLS, only applies packets that contain
+required MPLS or IP headers.
+
+.. _table_rte_flow_action_ttl_copy_out:
+
+.. table:: TTL_COPY_OUT
+
+ +---------------+
+ | Field |
+ +===============+
+ | no properties |
+ +---------------+
+
+Action: ``TTL_COPY_IN``
+^^^^^^^^^^^^^^^^^^^^^^^
+
+Copy the TTL from outermost to next-to-outermost header with TTL, copy can
+be IP to IP, MPLS to MPLS or MPLS to IP, only applies packets that contain
+required MPLS or IP headers.
+
+.. _table_rte_flow_action_ttl_copy_in:
+
+.. table:: TTL_COPY_IN
+
+ +---------------+
+ | Field |
+ +===============+
+ | no properties |
+ +---------------+
+
Negative types
~~~~~~~~~~~~~~
diff --git a/doc/guides/testpmd_app_ug/testpmd_funcs.rst b/doc/guides/testpmd_app_ug/testpmd_funcs.rst
index 48688600e..4dd86f10e 100644
--- a/doc/guides/testpmd_app_ug/testpmd_funcs.rst
+++ b/doc/guides/testpmd_app_ug/testpmd_funcs.rst
@@ -3442,6 +3442,18 @@ This section lists supported actions and their attributes, if any.
- ``original {boolean}``: use original VF ID if possible.
- ``id {unsigned}``: VF ID to redirect packets to.
+- ``mpls_ttl_dec``: decrement MPLS TTL.
+
+ - ``level``: level of MPLS header.
+
+- ``ip_ttl_dec``: decrement IPv4 TTL or IPv6 Hot Limit.
+
+ - ``level``: level of IPv4 or IPv6 header.
+
+- ``ttl_copy_out``: copy TTL outwards.
+
+- ``ttl_copy_in``: copy TTL inwards.
+
Destroying flow rules
~~~~~~~~~~~~~~~~~~~~~
diff --git a/lib/librte_ether/rte_flow.h b/lib/librte_ether/rte_flow.h
index 80cf75ff0..96a236945 100644
--- a/lib/librte_ether/rte_flow.h
+++ b/lib/librte_ether/rte_flow.h
@@ -1250,6 +1250,37 @@ enum rte_flow_action_type {
* See struct rte_flow_action_field_set.
*/
RTE_FLOW_ACTION_TYPE_FIELD_SET,
+
+ /**
+ * Decrement MPLS TTL, only applies to packets that contain specific
+ * MPLS header.
+ *
+ * See struct rte_flow_action_mpls_ttl_dec.
+ */
+ RTE_FLOW_ACTION_TYPE_MPLS_TTL_DEC,
+
+ /**
+ * Decrement IPv4 TTL or IPv6 Hop limit field and update the IP
+ * checksum, only applies to packets that contain specific IPv4
+ * or IPv6 header.
+ *
+ * See struct rte_flow_action_ip_ttl_dec.
+ */
+ RTE_FLOW_ACTION_TYPE_IP_TTL_DEC,
+
+ /**
+ * Copy the TTL from next-to-outermost to outermost header with TTL,
+ * copy can be IP to IP, MPLS to MPLS or IP to MPLS, only applies
+ * packets that contain required protocol headers.
+ */
+ RTE_FLOW_ACTION_TYPE_TTL_COPY_OUT,
+
+ /**
+ * Copy the TTL from outermost to next-to-outermost header with TTL,
+ * copy can be IP to IP, MPLS to MPLS or MPLS to IP, only applies
+ * packets that contain required protocol headers.
+ */
+ RTE_FLOW_ACTION_TYPE_TTL_COPY_IN,
};
/**
@@ -1420,6 +1451,52 @@ struct rte_flow_action_field_set {
};
/**
+ * RTE_FLOW_ACTION_TYPE_MPLS_TTL_DEC
+ *
+ * Decrement MPLS TTL, only applies to packets that contain specific
+ * MPLS header.
+ */
+struct rte_flow_action_mpls_ttl_dec {
+ /**
+ * Specify the level of MPLS header.
+ *
+ * direction (1b)
+ * 0: match start from outermost.
+ * 1: match start from innermost.
+ *
+ * level (31b)
+ * 0: outermost|innermost MPLS header.
+ * 1: next to outermost|innermost MPLS header.
+ * 2: and so on ...
+ */
+ uint32_t dir_level;
+
+};
+
+/**
+ * RTE_FLOW_ACTION_TYPE_IP_TTL_DEC
+ *
+ * Decrement IPv4 TTL or IPv6 hop limit field and update the IP
+ * checksum, only applies to packets that contain specific IPv4
+ * or IPv6 header.
+ */
+struct rte_flow_action_ip_ttl_dec {
+ /**
+ * Specify the level of IPv4 or IPv6 header.
+ *
+ * direction (1b)
+ * 0: match start from outermost.
+ * 1: match start from innermost.
+ *
+ * level (31b)
+ * 0: outermost|innermost IPv4 or IPv6 header.
+ * 1: next to outermost|innermost IPv4 or IPv6 header.
+ * 2: and so on ...
+ */
+ uint32_t dir_level;
+};
+
+/**
* Definition of a single action.
*
* A list of actions is terminated by a END action.
--
2.13.6
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