Merge branch '40GbE' of git://git.kernel.org/pub/scm/linux/kernel/git/tnguy/next-queue

Tony Nguyen says:

====================
ice: iavf: add support for TC U32 filters on VFs

Ahmed Zaki says:

The Intel Ethernet 800 Series is designed with a pipeline that has
an on-chip programmable capability called Dynamic Device Personalization
(DDP). A DDP package is loaded by the driver during probe time. The DDP
package programs functionality in both the parser and switching blocks in
the pipeline, allowing dynamic support for new and existing protocols.
Once the pipeline is configured, the driver can identify the protocol and
apply any HW action in different stages, for example, direct packets to
desired hardware queues (flow director), queue groups or drop.

Patches 1-8 introduce a DDP package parser API that enables different
pipeline stages in the driver to learn the HW parser capabilities from
the DDP package that is downloaded to HW. The parser library takes raw
packet patterns and masks (in binary) indicating the packet protocol fields
to be matched and generates the final HW profiles that can be applied at
the required stage. With this API, raw flow filtering for FDIR or RSS
could be done on new protocols or headers without any driver or Kernel
updates (only need to update the DDP package). These patches were submitted
before [1] but were not accepted mainly due to lack of a user.

Patches 9-11 extend the virtchnl support to allow the VF to request raw
flow director filters. Upon receiving the raw FDIR filter request, the PF
driver allocates and runs a parser lib instance and generates the hardware
profile definitions required to program the FDIR stage. These were also
submitted before [2].

Finally, patches 12 and 13 add TC U32 filter support to the iavf driver.
Using the parser API, the ice driver runs the raw patterns sent by the
user and then adds a new profile to the FDIR stage associated with the VF's
VSI. Refer to examples in patch 13 commit message.

[1]: https://lore.kernel.org/netdev/20230904021455.3944605-1-junfeng.guo@intel.com/
[2]: https://lore.kernel.org/intel-wired-lan/20230818064703.154183-1-junfeng.guo@intel.com/

* '40GbE' of git://git.kernel.org/pub/scm/linux/kernel/git/tnguy/next-queue:
  iavf: add support for offloading tc U32 cls filters
  iavf: refactor add/del FDIR filters
  ice: enable FDIR filters from raw binary patterns for VFs
  ice: add method to disable FDIR SWAP option
  virtchnl: support raw packet in protocol header
  ice: add API for parser profile initialization
  ice: add UDP tunnels support to the parser
  ice: support turning on/off the parser's double vlan mode
  ice: add parser execution main loop
  ice: add parser internal helper functions
  ice: add debugging functions for the parser sections
  ice: parse and init various DDP parser sections
  ice: add parser create and destroy skeleton
====================

Link: https://patch.msgid.link/20240813222249.3708070-1-anthony.l.nguyen@intel.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

1 files changed, 12 insertions, 1 deletions

diff --git a/include/linux/avf/virtchnl.h b/include/linux/avf/virtchnl.h
index 8e177b67e82f..f41395264dca 100644
--- a/include/linux/avf/virtchnl.h
+++ b/include/linux/avf/virtchnl.h
@@ -247,6 +247,7 @@ VIRTCHNL_CHECK_STRUCT_LEN(16, virtchnl_vsi_resource);
 /* used to negotiate communicating link speeds in Mbps */
 #define VIRTCHNL_VF_CAP_ADV_LINK_SPEED		BIT(7)
 #define  VIRTCHNL_VF_OFFLOAD_CRC		BIT(10)
+#define VIRTCHNL_VF_OFFLOAD_TC_U32		BIT(11)
 #define VIRTCHNL_VF_OFFLOAD_VLAN_V2		BIT(15)
 #define VIRTCHNL_VF_OFFLOAD_VLAN		BIT(16)
 #define VIRTCHNL_VF_OFFLOAD_RX_POLLING		BIT(17)
@@ -1121,6 +1122,7 @@ enum virtchnl_vfr_states {
 };
 
 #define VIRTCHNL_MAX_NUM_PROTO_HDRS	32
+#define VIRTCHNL_MAX_SIZE_RAW_PACKET	1024
 #define PROTO_HDR_SHIFT			5
 #define PROTO_HDR_FIELD_START(proto_hdr_type) ((proto_hdr_type) << PROTO_HDR_SHIFT)
 #define PROTO_HDR_FIELD_MASK ((1UL << PROTO_HDR_SHIFT) - 1)
@@ -1266,13 +1268,22 @@ struct virtchnl_proto_hdrs {
 	u8 pad[3];
 	/**
 	 * specify where protocol header start from.
+	 * must be 0 when sending a raw packet request.
 	 * 0 - from the outer layer
 	 * 1 - from the first inner layer
 	 * 2 - from the second inner layer
 	 * ....
 	 **/
 	int count; /* the proto layers must < VIRTCHNL_MAX_NUM_PROTO_HDRS */
-	struct virtchnl_proto_hdr proto_hdr[VIRTCHNL_MAX_NUM_PROTO_HDRS];
+	union {
+		struct virtchnl_proto_hdr
+			proto_hdr[VIRTCHNL_MAX_NUM_PROTO_HDRS];
+		struct {
+			u16 pkt_len;
+			u8 spec[VIRTCHNL_MAX_SIZE_RAW_PACKET];
+			u8 mask[VIRTCHNL_MAX_SIZE_RAW_PACKET];
+		} raw;
+	};
 };
 
 VIRTCHNL_CHECK_STRUCT_LEN(2312, virtchnl_proto_hdrs);