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Commit ca029179 authored by Govindarajulu Varadarajan's avatar Govindarajulu Varadarajan Committed by David S. Miller
Browse files

enic: add devcmds for vxlan offload 



This patch adds devcmds needed for vxlan offload. Implement 3 new devcmd

overlay_offload_ctrl: enable/disable offload
overlay_offload_cfg: update offload udp port number
get_supported_feature_ver: get hw supported offload version. Each
			   version has different bitmap for csum_ok/encap

Signed-off-by: default avatarGovindarajulu Varadarajan <gvaradar@cisco.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent c0e4dadb

drivers/net/ethernet/cisco/enic/vnic_dev.c

+34 −0
Original line number Diff line number Diff line
@@ -1247,3 +1247,37 @@ int vnic_dev_classifier(struct vnic_dev *vdev, u8 cmd, u16 *entry, 


	return ret;

}



int vnic_dev_overlay_offload_ctrl(struct vnic_dev *vdev, u8 overlay, u8 config)

{

	u64 a0 = overlay;

	u64 a1 = config;

	int wait = 1000;



	return vnic_dev_cmd(vdev, CMD_OVERLAY_OFFLOAD_CTRL, &a0, &a1, wait);

}



int vnic_dev_overlay_offload_cfg(struct vnic_dev *vdev, u8 overlay,

				 u16 vxlan_udp_port_number)

{

	u64 a1 = vxlan_udp_port_number;

	u64 a0 = overlay;

	int wait = 1000;



	return vnic_dev_cmd(vdev, CMD_OVERLAY_OFFLOAD_CFG, &a0, &a1, wait);

}



int vnic_dev_get_supported_feature_ver(struct vnic_dev *vdev, u8 feature,

				       u64 *supported_versions)

{

	u64 a0 = feature;

	int wait = 1000;

	u64 a1 = 0;

	int ret;



	ret = vnic_dev_cmd(vdev, CMD_GET_SUPP_FEATURE_VER, &a0, &a1, wait);

	if (!ret)

		*supported_versions = a0;



	return ret;

}

drivers/net/ethernet/cisco/enic/vnic_dev.h

+5 −0
Original line number Diff line number Diff line
@@ -179,5 +179,10 @@ int vnic_dev_set_mac_addr(struct vnic_dev *vdev, u8 *mac_addr); 
int vnic_dev_classifier(struct vnic_dev *vdev, u8 cmd, u16 *entry,

			struct filter *data);

int vnic_devcmd_init(struct vnic_dev *vdev);

int vnic_dev_overlay_offload_ctrl(struct vnic_dev *vdev, u8 overlay, u8 config);

int vnic_dev_overlay_offload_cfg(struct vnic_dev *vdev, u8 overlay,

				 u16 vxlan_udp_port_number);

int vnic_dev_get_supported_feature_ver(struct vnic_dev *vdev, u8 feature,

				       u64 *supported_versions);



#endif /* _VNIC_DEV_H_ */

drivers/net/ethernet/cisco/enic/vnic_devcmd.h

+51 −0
Original line number Diff line number Diff line
@@ -406,6 +406,31 @@ enum vnic_devcmd_cmd { 
	 * in: (u32) a0=Queue Pair number

	 */

	CMD_QP_STATS_CLEAR = _CMDC(_CMD_DIR_WRITE, _CMD_VTYPE_ENET, 63),



	/* Use this devcmd for agreeing on the highest common version supported

	 * by both driver and fw for features who need such a facility.

	 * in:	(u64) a0 = feature (driver requests for the supported versions

	 *	on this feature)

	 * out: (u64) a0 = bitmap of all supported versions for that feature

	 */

	CMD_GET_SUPP_FEATURE_VER = _CMDC(_CMD_DIR_RW, _CMD_VTYPE_ENET, 69),



	/* Control (Enable/Disable) overlay offloads on the given vnic

	 * in: (u8) a0 = OVERLAY_FEATURE_NVGRE : NVGRE

	 *	    a0 = OVERLAY_FEATURE_VXLAN : VxLAN

	 * in: (u8) a1 = OVERLAY_OFFLOAD_ENABLE : Enable or

	 *	    a1 = OVERLAY_OFFLOAD_DISABLE : Disable or

	 *	    a1 = OVERLAY_OFFLOAD_ENABLE_V2 : Enable with version 2

	 */

	CMD_OVERLAY_OFFLOAD_CTRL = _CMDC(_CMD_DIR_WRITE, _CMD_VTYPE_ENET, 72),



	/* Configuration of overlay offloads feature on a given vNIC

	 * in: (u8) a0 = DEVCMD_OVERLAY_NVGRE : NVGRE

	 *	    a0 = DEVCMD_OVERLAY_VXLAN : VxLAN

	 * in: (u8) a1 = VXLAN_PORT_UPDATE : VxLAN

	 * in: (u16) a2 = unsigned short int port information

	 */

	CMD_OVERLAY_OFFLOAD_CFG = _CMDC(_CMD_DIR_WRITE, _CMD_VTYPE_ENET, 73),

};



/* CMD_ENABLE2 flags */
@@ -657,4 +682,30 @@ struct devcmd2_result { 
#define DEVCMD2_RING_SIZE	32

#define DEVCMD2_DESC_SIZE	128



enum overlay_feature_t {

	OVERLAY_FEATURE_NVGRE = 1,

	OVERLAY_FEATURE_VXLAN,

	OVERLAY_FEATURE_MAX,

};



enum overlay_ofld_cmd {

	OVERLAY_OFFLOAD_ENABLE,

	OVERLAY_OFFLOAD_DISABLE,

	OVERLAY_OFFLOAD_ENABLE_P2,

	OVERLAY_OFFLOAD_MAX,

};



#define OVERLAY_CFG_VXLAN_PORT_UPDATE	0



/* Use this enum to get the supported versions for each of these features

 * If you need to use the devcmd_get_supported_feature_version(), add

 * the new feature into this enum and install function handler in devcmd.c

 */

enum vic_feature_t {

	VIC_FEATURE_VXLAN,

	VIC_FEATURE_RDMA,

	VIC_FEATURE_VXLAN_PATCH,

	VIC_FEATURE_MAX,

};



#endif /* _VNIC_DEVCMD_H_ */

drivers/net/ethernet/cisco/enic/vnic_enet.h

+1 −0
Original line number Diff line number Diff line
@@ -48,6 +48,7 @@ struct vnic_enet_config { 
#define VENETF_RSSHASH_IPV6_EX	0x200	/* Hash on IPv6 extended fields */

#define VENETF_RSSHASH_TCPIPV6_EX 0x400	/* Hash on TCP + IPv6 ext. fields */

#define VENETF_LOOP		0x800	/* Loopback enabled */

#define VENETF_VXLAN		0x10000	/* VxLAN offload */



#define VENET_INTR_TYPE_MIN	0	/* Timer specs min interrupt spacing */

#define VENET_INTR_TYPE_IDLE	1	/* Timer specs idle time before irq */