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* [dpdk-dev] [PATCH 1/3] mbuf: add Tx offloads for packet marking
@ 2020-04-17  7:22 Nithin Dabilpuram
  2020-04-17  7:22 ` [dpdk-dev] [PATCH 2/3] net/octeontx2: add tm packet marking cb Nithin Dabilpuram
                   ` (3 more replies)
  0 siblings, 4 replies; 36+ messages in thread
From: Nithin Dabilpuram @ 2020-04-17  7:22 UTC (permalink / raw)
  To: thomas, ferruh.yigit, arybchenko, orika, cristian.dumitrescu,
	anatoly.burakov, John McNamara, Marko Kovacevic, Olivier Matz
  Cc: dev, jerinj, kkanas, Nithin Dabilpuram

From: Nithin Dabilpuram <ndabilpuram@marvell.com>

Introduce PKT_TX_MARK_IP_DSCP, PKT_TX_MARK_IP_ECN
and PKT_TX_MARK_VLAN_DEI Tx offload flags to support
packet marking.

When packet marking feature in Traffic manager is enabled,
application has to the use the three new flags to indicate
to PMD on whether packet marking needs to be enabled on the
specific mbuf or not. By setting the three flags, it is
assumed by PMD that application has already verified the
applicability of marking on that specific packet and
PMD need not perform further checks as per RFC.

Signed-off-by: Krzysztof Kanas <kkanas@marvell.com>
Signed-off-by: Nithin Dabilpuram <ndabilpuram@marvell.com>
---
 doc/guides/nics/features.rst    | 14 ++++++++++++++
 lib/librte_mbuf/rte_mbuf.c      |  6 ++++++
 lib/librte_mbuf/rte_mbuf_core.h | 36 ++++++++++++++++++++++++++++++++++--
 3 files changed, 54 insertions(+), 2 deletions(-)

diff --git a/doc/guides/nics/features.rst b/doc/guides/nics/features.rst
index edd21c4..bc978fb 100644
--- a/doc/guides/nics/features.rst
+++ b/doc/guides/nics/features.rst
@@ -913,6 +913,20 @@ Supports to get Rx/Tx packet burst mode information.
 * **[implements] eth_dev_ops**: ``rx_burst_mode_get``, ``tx_burst_mode_get``.
 * **[related] API**: ``rte_eth_rx_burst_mode_get()``, ``rte_eth_tx_burst_mode_get()``.
 
+.. _nic_features_traffic_manager_packet_marking_offload:
+
+Traffic Manager Packet marking offload
+--------------------------------------
+
+Supports enabling a packet marking offload specific mbuf.
+
+* **[uses]     mbuf**: ``mbuf.ol_flags:PKT_TX_MARK_IP_DSCP``,
+  ``mbuf.ol_flags:PKT_TX_MARK_IP_ECN``, ``mbuf.ol_flags:PKT_TX_MARK_VLAN_DEI``,
+  ``mbuf.ol_flags:PKT_TX_IPV4``, ``mbuf.ol_flags:PKT_TX_IPV6``.
+* **[uses]     mbuf**: ``mbuf.l2_len``.
+* **[related] API**: ``rte_tm_mark_ip_dscp()``, ``rte_tm_mark_ip_ecn()``,
+  ``rte_tm_mark_vlan_dei()``.
+
 .. _nic_features_other:
 
 Other dev ops not represented by a Feature
diff --git a/lib/librte_mbuf/rte_mbuf.c b/lib/librte_mbuf/rte_mbuf.c
index cd5794d..5c6896d 100644
--- a/lib/librte_mbuf/rte_mbuf.c
+++ b/lib/librte_mbuf/rte_mbuf.c
@@ -880,6 +880,9 @@ const char *rte_get_tx_ol_flag_name(uint64_t mask)
 	case PKT_TX_SEC_OFFLOAD: return "PKT_TX_SEC_OFFLOAD";
 	case PKT_TX_UDP_SEG: return "PKT_TX_UDP_SEG";
 	case PKT_TX_OUTER_UDP_CKSUM: return "PKT_TX_OUTER_UDP_CKSUM";
+	case PKT_TX_MARK_VLAN_DEI: return "PKT_TX_MARK_VLAN_DEI";
+	case PKT_TX_MARK_IP_DSCP: return "PKT_TX_MARK_IP_DSCP";
+	case PKT_TX_MARK_IP_ECN: return "PKT_TX_MARK_IP_ECN";
 	default: return NULL;
 	}
 }
@@ -916,6 +919,9 @@ rte_get_tx_ol_flag_list(uint64_t mask, char *buf, size_t buflen)
 		{ PKT_TX_SEC_OFFLOAD, PKT_TX_SEC_OFFLOAD, NULL },
 		{ PKT_TX_UDP_SEG, PKT_TX_UDP_SEG, NULL },
 		{ PKT_TX_OUTER_UDP_CKSUM, PKT_TX_OUTER_UDP_CKSUM, NULL },
+		{ PKT_TX_MARK_VLAN_DEI, PKT_TX_MARK_VLAN_DEI, NULL },
+		{ PKT_TX_MARK_IP_DSCP, PKT_TX_MARK_IP_DSCP, NULL },
+		{ PKT_TX_MARK_IP_ECN, PKT_TX_MARK_IP_ECN, NULL },
 	};
 	const char *name;
 	unsigned int i;
diff --git a/lib/librte_mbuf/rte_mbuf_core.h b/lib/librte_mbuf/rte_mbuf_core.h
index b9a59c8..d9f1290 100644
--- a/lib/librte_mbuf/rte_mbuf_core.h
+++ b/lib/librte_mbuf/rte_mbuf_core.h
@@ -187,11 +187,40 @@ extern "C" {
 /* add new RX flags here, don't forget to update PKT_FIRST_FREE */
 
 #define PKT_FIRST_FREE (1ULL << 23)
-#define PKT_LAST_FREE (1ULL << 40)
+#define PKT_LAST_FREE (1ULL << 37)
 
 /* add new TX flags here, don't forget to update PKT_LAST_FREE  */
 
 /**
+ * Packet marking offload flags. These flags indicated what kind
+ * of packet marking needs to be applied on a given mbuf when
+ * appropriate Traffic Manager configuration is in place.
+ * When user set's these flags on a mbuf, below assumptions are made
+ * 1) When PKT_TX_MARK_VLAN_DEI is set,
+ * a) PMD assumes pkt to be a 802.1q packet.
+ * b) Application should also set mbuf.l2_len where 802.1Q header is
+ *    at (mbuf.l2_len - 6) offset.
+ * 2) When PKT_TX_MARK_IP_DSCP is set,
+ * a) Application should also set either PKT_TX_IPV4 or PKT_TX_IPV6
+ *    to indicate whether if it is IPv4 packet or IPv6 packet
+ *    for DSCP marking. It should also set PKT_TX_IP_CKSUM if it is
+ *    IPv4 pkt.
+ * b) Application should also set mbuf.l2_len that indicates
+ *    start offset of L3 header.
+ * 3) When PKT_TX_MARK_IP_ECN is set,
+ * a) Application should also set either PKT_TX_IPV4 or PKT_TX_IPV6.
+ *    It should also set PKT_TX_IP_CKSUM if it is IPv4 pkt.
+ * b) PMD will assume pkt L4 protocol is either TCP or SCTP and
+ *    ECN is set to 2'b01 or 2'b10 as per RFC 3168 and hence HW
+ *    can mark the packet for a configured color.
+ * c) Application should also set mbuf.l2_len that indicates
+ *    start offset of L3 header.
+ */
+#define PKT_TX_MARK_VLAN_DEI		(1ULL << 38)
+#define PKT_TX_MARK_IP_DSCP		(1ULL << 39)
+#define PKT_TX_MARK_IP_ECN		(1ULL << 40)
+
+/**
  * Outer UDP checksum offload flag. This flag is used for enabling
  * outer UDP checksum in PMD. To use outer UDP checksum, the user needs to
  * 1) Enable the following in mbuf,
@@ -384,7 +413,10 @@ extern "C" {
 		PKT_TX_MACSEC |		 \
 		PKT_TX_SEC_OFFLOAD |	 \
 		PKT_TX_UDP_SEG |	 \
-		PKT_TX_OUTER_UDP_CKSUM)
+		PKT_TX_OUTER_UDP_CKSUM | \
+		PKT_TX_MARK_VLAN_DEI |	 \
+		PKT_TX_MARK_IP_DSCP |	 \
+		PKT_TX_MARK_IP_ECN)
 
 /**
  * Mbuf having an external buffer attached. shinfo in mbuf must be filled.
-- 
2.8.4


^ permalink raw reply	[flat|nested] 36+ messages in thread
end of thread, other threads:[~2023-08-14  8:12 UTC | newest]

Thread overview: 36+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2020-04-17  7:22 [dpdk-dev] [PATCH 1/3] mbuf: add Tx offloads for packet marking Nithin Dabilpuram
2020-04-17  7:22 ` [dpdk-dev] [PATCH 2/3] net/octeontx2: add tm packet marking cb Nithin Dabilpuram
2020-04-17  7:22 ` [dpdk-dev] [PATCH 3/3] net/octeontx2: add Tx packet marking offload support Nithin Dabilpuram
2020-05-01 11:18 ` [dpdk-dev] [PATCH 1/3] mbuf: add Tx offloads for packet marking Jerin Jacob
2020-05-04  8:06   ` Olivier Matz
2020-05-04  8:27     ` [dpdk-dev] [EXT] " Nithin Dabilpuram
2020-05-04  9:16       ` Olivier Matz
2020-05-04 10:04         ` Nithin Dabilpuram
2020-05-04 12:27           ` Olivier Matz
2020-05-05  6:19             ` Nithin Dabilpuram
2020-05-13 12:28               ` Nithin Dabilpuram
2020-05-14 20:29               ` Olivier Matz
2020-05-15 10:08                 ` Nithin Dabilpuram
2020-05-15 10:30                   ` Ananyev, Konstantin
2020-05-15 13:57                     ` Nithin Dabilpuram
2020-05-28 15:43                       ` Nithin Dabilpuram
2020-05-30 15:12                         ` Jerin Jacob
2020-06-02 10:53                           ` Ananyev, Konstantin
2020-06-02 14:25                             ` Nithin Dabilpuram
2020-06-03  8:28                               ` Olivier Matz
2020-06-03 10:44                                 ` Nithin Dabilpuram
2020-06-03 11:38                                   ` Olivier Matz
2020-06-03 12:52                                     ` Nithin Dabilpuram
2020-06-03 16:14                                       ` Slava Ovsiienko
2020-06-08  9:39                                         ` Nithin Dabilpuram
2020-06-03 14:56                                     ` Thomas Monjalon
2020-06-03 10:31                               ` Ananyev, Konstantin
2020-05-15 13:12                   ` Thomas Monjalon
2020-05-15 13:44                     ` Nithin Dabilpuram
2020-05-15 15:10                       ` Thomas Monjalon
2020-05-15 16:26                         ` Jerin Jacob
2020-05-15 16:52                           ` Thomas Monjalon
2020-05-15 17:00                             ` Jerin Jacob
2020-05-15 18:07                             ` Nithin Dabilpuram
2023-07-31 12:54 ` [dpdk-dev] " Thomas Monjalon
2023-08-14  8:11   ` Nithin Dabilpuram

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