struct vfpf_acquire_tlv *req = &bp->vf2pf_mbox->req.acquire;
struct pfvf_acquire_resp_tlv *resp = &bp->vf2pf_mbox->resp.acquire_resp;
struct vfpf_port_phys_id_resp_tlv *phys_port_resp;
+ struct vfpf_fp_hsi_resp_tlv *fp_hsi_resp;
u32 vf_id;
bool resources_acquired = false;
req->vfdev_info.vf_id = vf_id;
req->vfdev_info.vf_os = 0;
+ req->vfdev_info.fp_hsi_ver = ETH_FP_HSI_VERSION;
req->resc_request.num_rxqs = rx_count;
req->resc_request.num_txqs = tx_count;
memset(&bp->vf2pf_mbox->resp, 0,
sizeof(union pfvf_tlvs));
} else {
- /* PF reports error */
- BNX2X_ERR("Failed to get the requested amount of resources: %d. Breaking...\n",
- bp->acquire_resp.hdr.status);
+ /* Determine reason of PF failure of acquire process */
+ fp_hsi_resp = bnx2x_search_tlv_list(bp, resp,
+ CHANNEL_TLV_FP_HSI_SUPPORT);
+ if (fp_hsi_resp && !fp_hsi_resp->is_supported)
+ BNX2X_ERR("Old hypervisor - doesn't support current fastpath HSI version; Need to downgrade VF driver [or upgrade hypervisor]\n");
+ else
+ BNX2X_ERR("Failed to get the requested amount of resources: %d. Breaking...\n",
+ bp->acquire_resp.hdr.status);
rc = -EAGAIN;
goto out;
}
bp->flags |= HAS_PHYS_PORT_ID;
}
+ /* Old Hypevisors might not even support the FP_HSI_SUPPORT TLV.
+ * If that's the case, we need to make certain required FW was
+ * supported by such a hypervisor [i.e., v0-v2].
+ */
+ fp_hsi_resp = bnx2x_search_tlv_list(bp, resp,
+ CHANNEL_TLV_FP_HSI_SUPPORT);
+ if (!fp_hsi_resp && (ETH_FP_HSI_VERSION > ETH_FP_HSI_VER_2)) {
+ BNX2X_ERR("Old hypervisor - need to downgrade VF's driver\n");
+
+ /* Since acquire succeeded on the PF side, we need to send a
+ * release message in order to allow future probes.
+ */
+ bnx2x_vfpf_finalize(bp, &req->first_tlv);
+ bnx2x_vfpf_release(bp);
+
+ rc = -EINVAL;
+ goto out;
+ }
+
/* get HW info */
bp->common.chip_id |= (bp->acquire_resp.pfdev_info.chip_num & 0xffff);
bp->link_params.chip_id = bp->common.chip_id;
*offset += sizeof(struct vfpf_port_phys_id_resp_tlv);
}
+static void bnx2x_vf_mbx_resp_fp_hsi_ver(struct bnx2x *bp,
+ struct bnx2x_virtf *vf,
+ void *buffer,
+ u16 *offset)
+{
+ struct vfpf_fp_hsi_resp_tlv *fp_hsi;
+
+ bnx2x_add_tlv(bp, buffer, *offset, CHANNEL_TLV_FP_HSI_SUPPORT,
+ sizeof(struct vfpf_fp_hsi_resp_tlv));
+
+ fp_hsi = (struct vfpf_fp_hsi_resp_tlv *)
+ (((u8 *)buffer) + *offset);
+ fp_hsi->is_supported = (vf->fp_hsi > ETH_FP_HSI_VERSION) ? 0 : 1;
+
+ /* Offset should continue representing the offset to the tail
+ * of TLV data (outside this function scope)
+ */
+ *offset += sizeof(struct vfpf_fp_hsi_resp_tlv);
+}
+
static void bnx2x_vf_mbx_acquire_resp(struct bnx2x *bp, struct bnx2x_virtf *vf,
struct bnx2x_vf_mbx *mbx, int vfop_status)
{
CHANNEL_TLV_PHYS_PORT_ID))
bnx2x_vf_mbx_resp_phys_port(bp, vf, &mbx->msg->resp, &length);
+ /* `New' vfs will want to know if fastpath HSI is supported, since
+ * if that's not the case they could print into system log the fact
+ * the driver version must be updated.
+ */
+ bnx2x_vf_mbx_resp_fp_hsi_ver(bp, vf, &mbx->msg->resp, &length);
+
bnx2x_add_tlv(bp, &mbx->msg->resp, length, CHANNEL_TLV_LIST_END,
sizeof(struct channel_list_end_tlv));
goto out;
}
+ /* Verify the VF fastpath HSI can be supported by the loaded FW.
+ * Linux vfs should be oblivious to changes between v0 and v2.
+ */
+ if (bnx2x_vf_mbx_is_windows_vm(bp, &mbx->msg->req.acquire))
+ vf->fp_hsi = acquire->vfdev_info.fp_hsi_ver;
+ else
+ vf->fp_hsi = max_t(u8, acquire->vfdev_info.fp_hsi_ver,
+ ETH_FP_HSI_VER_2);
+ if (vf->fp_hsi > ETH_FP_HSI_VERSION) {
+ DP(BNX2X_MSG_IOV,
+ "VF [%d] - Can't support acquire request since VF requests a FW version which is too new [%02x > %02x]\n",
+ vf->abs_vfid, acquire->vfdev_info.fp_hsi_ver,
+ ETH_FP_HSI_VERSION);
+ rc = -EINVAL;
+ goto out;
+ }
+
/* acquire the resources */
rc = bnx2x_vf_acquire(bp, vf, &acquire->resc_request);
projects / platform / kernel / linux-exynos.git / commitdiff