/* * cxgb4_uld.c:Chelsio Upper Layer Driver Interface for T4/T5/T6 SGE management * * Copyright (c) 2016 Chelsio Communications, Inc. All rights reserved. * * This software is available to you under a choice of one of two * licenses. You may choose to be licensed under the terms of the GNU * General Public License (GPL) Version 2, available from the file * COPYING in the main directory of this source tree, or the * OpenIB.org BSD license below: * * Redistribution and use in source and binary forms, with or * without modification, are permitted provided that the following * conditions are met: * * - Redistributions of source code must retain the above * copyright notice, this list of conditions and the following * disclaimer. * * - Redistributions in binary form must reproduce the above * copyright notice, this list of conditions and the following * disclaimer in the documentation and/or other materials * provided with the distribution. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE * SOFTWARE. * * Written by: Atul Gupta ([email protected]) * Written by: Hariprasad Shenai ([email protected]) */ #include <linux/kernel.h> #include <linux/module.h> #include <linux/errno.h> #include <linux/types.h> #include <linux/debugfs.h> #include <linux/export.h> #include <linux/list.h> #include <linux/skbuff.h> #include <linux/pci.h> #include "cxgb4.h" #include "cxgb4_uld.h" #include "t4_regs.h" #include "t4fw_api.h" #include "t4_msg.h" #define for_each_uldrxq(m, i) … /* Flush the aggregated lro sessions */ static void uldrx_flush_handler(struct sge_rspq *q) { … } /** * uldrx_handler - response queue handler for ULD queues * @q: the response queue that received the packet * @rsp: the response queue descriptor holding the offload message * @gl: the gather list of packet fragments * * Deliver an ingress offload packet to a ULD. All processing is done by * the ULD, we just maintain statistics. */ static int uldrx_handler(struct sge_rspq *q, const __be64 *rsp, const struct pkt_gl *gl) { … } static int alloc_uld_rxqs(struct adapter *adap, struct sge_uld_rxq_info *rxq_info, bool lro) { … } static int setup_sge_queues_uld(struct adapter *adap, unsigned int uld_type, bool lro) { … } static void t4_free_uld_rxqs(struct adapter *adap, int n, struct sge_ofld_rxq *q) { … } static void free_sge_queues_uld(struct adapter *adap, unsigned int uld_type) { … } static int cfg_queues_uld(struct adapter *adap, unsigned int uld_type, const struct cxgb4_uld_info *uld_info) { … } static void free_queues_uld(struct adapter *adap, unsigned int uld_type) { … } static int request_msix_queue_irqs_uld(struct adapter *adap, unsigned int uld_type) { … } static void free_msix_queue_irqs_uld(struct adapter *adap, unsigned int uld_type) { … } static void enable_rx_uld(struct adapter *adap, unsigned int uld_type) { … } static void quiesce_rx_uld(struct adapter *adap, unsigned int uld_type) { … } static void free_sge_txq_uld(struct adapter *adap, struct sge_uld_txq_info *txq_info) { … } static int alloc_sge_txq_uld(struct adapter *adap, struct sge_uld_txq_info *txq_info, unsigned int uld_type) { … } static void release_sge_txq_uld(struct adapter *adap, unsigned int uld_type) { … } static int setup_sge_txq_uld(struct adapter *adap, unsigned int uld_type, const struct cxgb4_uld_info *uld_info) { … } static void uld_queue_init(struct adapter *adap, unsigned int uld_type, struct cxgb4_lld_info *lli) { … } int t4_uld_mem_alloc(struct adapter *adap) { … } void t4_uld_mem_free(struct adapter *adap) { … } /* This function should be called with uld_mutex taken. */ static void cxgb4_shutdown_uld_adapter(struct adapter *adap, enum cxgb4_uld type) { … } void t4_uld_clean_up(struct adapter *adap) { … } static void uld_init(struct adapter *adap, struct cxgb4_lld_info *lld) { … } static int uld_attach(struct adapter *adap, unsigned int uld) { … } #if IS_ENABLED(CONFIG_CHELSIO_TLS_DEVICE) static bool cxgb4_uld_in_use(struct adapter *adap) { … } /* cxgb4_set_ktls_feature: request FW to enable/disable ktls settings. * @adap: adapter info * @enable: 1 to enable / 0 to disable ktls settings. */ int cxgb4_set_ktls_feature(struct adapter *adap, bool enable) { … } #endif static void cxgb4_uld_alloc_resources(struct adapter *adap, enum cxgb4_uld type, const struct cxgb4_uld_info *p) { … } void cxgb4_uld_enable(struct adapter *adap) { … } /* cxgb4_register_uld - register an upper-layer driver * @type: the ULD type * @p: the ULD methods * * Registers an upper-layer driver with this driver and notifies the ULD * about any presently available devices that support its type. */ void cxgb4_register_uld(enum cxgb4_uld type, const struct cxgb4_uld_info *p) { … } EXPORT_SYMBOL(…); /** * cxgb4_unregister_uld - unregister an upper-layer driver * @type: the ULD type * * Unregisters an existing upper-layer driver. */ int cxgb4_unregister_uld(enum cxgb4_uld type) { … } EXPORT_SYMBOL(…);
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