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Message-Id: <20170209004309.1225-2-gvaradar@cisco.com>
Date: Wed, 8 Feb 2017 16:43:07 -0800
From: Govindarajulu Varadarajan <gvaradar@...co.com>
To: davem@...emloft.net, netdev@...r.kernel.org
Cc: benve@...co.com, Govindarajulu Varadarajan <gvaradar@...co.com>
Subject: [PATCH 1/3 v2 net-next] 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: Govindarajulu Varadarajan <gvaradar@...co.com>
---
drivers/net/ethernet/cisco/enic/vnic_dev.c | 34 ++++++++++++++++++
drivers/net/ethernet/cisco/enic/vnic_dev.h | 5 +++
drivers/net/ethernet/cisco/enic/vnic_devcmd.h | 51 +++++++++++++++++++++++++++
drivers/net/ethernet/cisco/enic/vnic_enet.h | 1 +
4 files changed, 91 insertions(+)
diff --git a/drivers/net/ethernet/cisco/enic/vnic_dev.c b/drivers/net/ethernet/cisco/enic/vnic_dev.c
index 8f27df3207bc..1841ad45d215 100644
--- a/drivers/net/ethernet/cisco/enic/vnic_dev.c
+++ b/drivers/net/ethernet/cisco/enic/vnic_dev.c
@@ -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;
+}
diff --git a/drivers/net/ethernet/cisco/enic/vnic_dev.h b/drivers/net/ethernet/cisco/enic/vnic_dev.h
index 54156c484424..9d43d6bb9907 100644
--- a/drivers/net/ethernet/cisco/enic/vnic_dev.h
+++ b/drivers/net/ethernet/cisco/enic/vnic_dev.h
@@ -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_ */
diff --git a/drivers/net/ethernet/cisco/enic/vnic_devcmd.h b/drivers/net/ethernet/cisco/enic/vnic_devcmd.h
index 2a812880b884..d83880b0d468 100644
--- a/drivers/net/ethernet/cisco/enic/vnic_devcmd.h
+++ b/drivers/net/ethernet/cisco/enic/vnic_devcmd.h
@@ -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_ */
diff --git a/drivers/net/ethernet/cisco/enic/vnic_enet.h b/drivers/net/ethernet/cisco/enic/vnic_enet.h
index 75aced2de869..7d6fbb5635a4 100644
--- a/drivers/net/ethernet/cisco/enic/vnic_enet.h
+++ b/drivers/net/ethernet/cisco/enic/vnic_enet.h
@@ -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 */
--
2.11.0
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