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enic: add devcmds for vxlan offload

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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: Govindarajulu Varadarajan <gvaradar@cisco.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Govindarajulu Varadarajan 2017-02-08 16:43:07 -08:00 committed by David S. Miller
parent c0e4dadb34
commit ca02917982
4 changed files with 91 additions and 0 deletions
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34
drivers/net/ethernet/cisco/enic/vnic_dev.c
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@ -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;
}

5
drivers/net/ethernet/cisco/enic/vnic_dev.h
View File

@ -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_ */

51
drivers/net/ethernet/cisco/enic/vnic_devcmd.h
View File

@ -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_ */

1
drivers/net/ethernet/cisco/enic/vnic_enet.h
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@ -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 */