Merge branch '100GbE' of git://git.kernel.org/pub/scm/linux/kernel/gi…

…t/tnguy/next-queue

Tony Nguyen says:

====================
100GbE Intel Wired LAN Driver Updates 2021-03-22

This series contains updates to ice and iavf drivers.

Haiyue Wang says:

The Intel E810 Series supports a programmable pipeline for a domain
specific protocols classification, for example GTP by Dynamic Device
Personalization (DDP) profile.

The E810 PF has introduced flex-bytes support by ethtool user-def option
allowing for packet deeper matching based on an offset and value for DDP
usage.

For making VF also benefit from this flexible protocol classification,
some new virtchnl messages are defined and handled by PF, so VF can
query this new flow director capability, and use ethtool with extending
the user-def option to configure Rx flow classification.

The new user-def 0xAAAABBBBCCCCDDDD: BBBB is the 2 byte pattern while
AAAA corresponds to its offset in the packet. Similarly DDDD is the 2
byte pattern with CCCC being the corresponding offset. The offset ranges
from 0x0 to 0x1F7 (up to 504 bytes into the packet). The offset starts
from the beginning of the packet.

This feature can be used to allow customers to set flow director rules
for protocols headers that are beyond standard ones supported by
ethtool (e.g. PFCP or GTP-U).

Like for matching GTP-U's TEID value 0x10203040:
ethtool -N ens787f0v0 flow-type udp4 dst-port 2152 \
    user-def 0x002e102000303040 action 13
====================

Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/intel/iavf/Makefile

@@ -11,5 +11,5 @@ subdir-ccflags-y += -I$(src)
 
 obj-$(CONFIG_IAVF) += iavf.o
 
-iavf-objs := iavf_main.o iavf_ethtool.o iavf_virtchnl.o \
+iavf-objs := iavf_main.o iavf_ethtool.o iavf_virtchnl.o iavf_fdir.o \
 	     iavf_txrx.o iavf_common.o iavf_adminq.o iavf_client.o

drivers/net/ethernet/intel/iavf/iavf.h

@@ -37,6 +37,7 @@
 #include "iavf_type.h"
 #include <linux/avf/virtchnl.h>
 #include "iavf_txrx.h"
+#include "iavf_fdir.h"
 
 #define DEFAULT_DEBUG_LEVEL_SHIFT 3
 #define PFX "iavf: "
@@ -300,6 +301,8 @@ struct iavf_adapter {
 #define IAVF_FLAG_AQ_DISABLE_CHANNELS		BIT(22)
 #define IAVF_FLAG_AQ_ADD_CLOUD_FILTER		BIT(23)
 #define IAVF_FLAG_AQ_DEL_CLOUD_FILTER		BIT(24)
+#define IAVF_FLAG_AQ_ADD_FDIR_FILTER		BIT(25)
+#define IAVF_FLAG_AQ_DEL_FDIR_FILTER		BIT(26)
 
 	/* OS defined structs */
 	struct net_device *netdev;
@@ -340,6 +343,8 @@ struct iavf_adapter {
 			  VIRTCHNL_VF_OFFLOAD_VLAN)
 #define ADV_LINK_SUPPORT(_a) ((_a)->vf_res->vf_cap_flags & \
 			      VIRTCHNL_VF_CAP_ADV_LINK_SPEED)
+#define FDIR_FLTR_SUPPORT(_a) ((_a)->vf_res->vf_cap_flags & \
+			       VIRTCHNL_VF_OFFLOAD_FDIR_PF)
 	struct virtchnl_vf_resource *vf_res; /* incl. all VSIs */
 	struct virtchnl_vsi_resource *vsi_res; /* our LAN VSI */
 	struct virtchnl_version_info pf_version;
@@ -362,6 +367,11 @@ struct iavf_adapter {
 	/* lock to protect access to the cloud filter list */
 	spinlock_t cloud_filter_list_lock;
 	u16 num_cloud_filters;
+
+#define IAVF_MAX_FDIR_FILTERS 128	/* max allowed Flow Director filters */
+	u16 fdir_active_fltr;
+	struct list_head fdir_list_head;
+	spinlock_t fdir_fltr_lock;	/* protect the Flow Director filter list */
 };
 
 
@@ -432,6 +442,8 @@ void iavf_enable_channels(struct iavf_adapter *adapter);
 void iavf_disable_channels(struct iavf_adapter *adapter);
 void iavf_add_cloud_filter(struct iavf_adapter *adapter);
 void iavf_del_cloud_filter(struct iavf_adapter *adapter);
+void iavf_add_fdir_filter(struct iavf_adapter *adapter);
+void iavf_del_fdir_filter(struct iavf_adapter *adapter);
 struct iavf_mac_filter *iavf_add_filter(struct iavf_adapter *adapter,
 					const u8 *macaddr);
 #endif /* _IAVF_H_ */