cregit-Linux how code gets into the kernel

Release 4.11 drivers/net/ethernet/qlogic/qed/qed_ooo.c

/* QLogic qed NIC Driver
 * Copyright (c) 2015-2017  QLogic Corporation
 *
 * 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.
 */

#include <linux/types.h>
#include <linux/dma-mapping.h>
#include <linux/kernel.h>
#include <linux/list.h>
#include <linux/pci.h>
#include <linux/slab.h>
#include <linux/string.h>
#include "qed.h"
#include "qed_iscsi.h"
#include "qed_ll2.h"
#include "qed_ooo.h"


static struct qed_ooo_archipelago *qed_ooo_seek_archipelago(struct qed_hwfn *p_hwfn, struct qed_ooo_info *p_ooo_info, u32 cid) { struct qed_ooo_archipelago *p_archipelago = NULL; list_for_each_entry(p_archipelago, &p_ooo_info->archipelagos_list, list_entry) { if (p_archipelago->cid == cid) return p_archipelago; } return NULL; }

Contributors

PersonTokensPropCommitsCommitProp
Yuval Mintz52100.00%1100.00%
Total52100.00%1100.00%


static struct qed_ooo_isle *qed_ooo_seek_isle(struct qed_hwfn *p_hwfn, struct qed_ooo_info *p_ooo_info, u32 cid, u8 isle) { struct qed_ooo_archipelago *p_archipelago = NULL; struct qed_ooo_isle *p_isle = NULL; u8 the_num_of_isle = 1; p_archipelago = qed_ooo_seek_archipelago(p_hwfn, p_ooo_info, cid); if (!p_archipelago) { DP_NOTICE(p_hwfn, "Connection %d is not found in OOO list\n", cid); return NULL; } list_for_each_entry(p_isle, &p_archipelago->isles_list, list_entry) { if (the_num_of_isle == isle) return p_isle; the_num_of_isle++; } return NULL; }

Contributors

PersonTokensPropCommitsCommitProp
Yuval Mintz98100.00%1100.00%
Total98100.00%1100.00%


void qed_ooo_save_history_entry(struct qed_hwfn *p_hwfn, struct qed_ooo_info *p_ooo_info, struct ooo_opaque *p_cqe) { struct qed_ooo_history *p_history = &p_ooo_info->ooo_history; if (p_history->head_idx == p_history->num_of_cqes) p_history->head_idx = 0; p_history->p_cqes[p_history->head_idx] = *p_cqe; p_history->head_idx++; }

Contributors

PersonTokensPropCommitsCommitProp
Yuval Mintz63100.00%1100.00%
Total63100.00%1100.00%


struct qed_ooo_info *qed_ooo_alloc(struct qed_hwfn *p_hwfn) { struct qed_ooo_info *p_ooo_info; u16 max_num_archipelagos = 0; u16 max_num_isles = 0; u32 i; if (p_hwfn->hw_info.personality != QED_PCI_ISCSI) { DP_NOTICE(p_hwfn, "Failed to allocate qed_ooo_info: unknown personality\n"); return NULL; } max_num_archipelagos = p_hwfn->pf_params.iscsi_pf_params.num_cons; max_num_isles = QED_MAX_NUM_ISLES + max_num_archipelagos; if (!max_num_archipelagos) { DP_NOTICE(p_hwfn, "Failed to allocate qed_ooo_info: unknown amount of connections\n"); return NULL; } p_ooo_info = kzalloc(sizeof(*p_ooo_info), GFP_KERNEL); if (!p_ooo_info) return NULL; INIT_LIST_HEAD(&p_ooo_info->free_buffers_list); INIT_LIST_HEAD(&p_ooo_info->ready_buffers_list); INIT_LIST_HEAD(&p_ooo_info->free_isles_list); INIT_LIST_HEAD(&p_ooo_info->free_archipelagos_list); INIT_LIST_HEAD(&p_ooo_info->archipelagos_list); p_ooo_info->p_isles_mem = kcalloc(max_num_isles, sizeof(struct qed_ooo_isle), GFP_KERNEL); if (!p_ooo_info->p_isles_mem) goto no_isles_mem; for (i = 0; i < max_num_isles; i++) { INIT_LIST_HEAD(&p_ooo_info->p_isles_mem[i].buffers_list); list_add_tail(&p_ooo_info->p_isles_mem[i].list_entry, &p_ooo_info->free_isles_list); } p_ooo_info->p_archipelagos_mem = kcalloc(max_num_archipelagos, sizeof(struct qed_ooo_archipelago), GFP_KERNEL); if (!p_ooo_info->p_archipelagos_mem) goto no_archipelagos_mem; for (i = 0; i < max_num_archipelagos; i++) { INIT_LIST_HEAD(&p_ooo_info->p_archipelagos_mem[i].isles_list); list_add_tail(&p_ooo_info->p_archipelagos_mem[i].list_entry, &p_ooo_info->free_archipelagos_list); } p_ooo_info->ooo_history.p_cqes = kcalloc(QED_MAX_NUM_OOO_HISTORY_ENTRIES, sizeof(struct ooo_opaque), GFP_KERNEL); if (!p_ooo_info->ooo_history.p_cqes) goto no_history_mem; p_ooo_info->ooo_history.num_of_cqes = QED_MAX_NUM_OOO_HISTORY_ENTRIES; return p_ooo_info; no_history_mem: kfree(p_ooo_info->p_archipelagos_mem); no_archipelagos_mem: kfree(p_ooo_info->p_isles_mem); no_isles_mem: kfree(p_ooo_info); return NULL; }

Contributors

PersonTokensPropCommitsCommitProp
Yuval Mintz362100.00%2100.00%
Total362100.00%2100.00%


void qed_ooo_release_connection_isles(struct qed_hwfn *p_hwfn, struct qed_ooo_info *p_ooo_info, u32 cid) { struct qed_ooo_archipelago *p_archipelago; struct qed_ooo_buffer *p_buffer; struct qed_ooo_isle *p_isle; bool b_found = false; if (list_empty(&p_ooo_info->archipelagos_list)) return; list_for_each_entry(p_archipelago, &p_ooo_info->archipelagos_list, list_entry) { if (p_archipelago->cid == cid) { list_del(&p_archipelago->list_entry); b_found = true; break; } } if (!b_found) return; while (!list_empty(&p_archipelago->isles_list)) { p_isle = list_first_entry(&p_archipelago->isles_list, struct qed_ooo_isle, list_entry); list_del(&p_isle->list_entry); while (!list_empty(&p_isle->buffers_list)) { p_buffer = list_first_entry(&p_isle->buffers_list, struct qed_ooo_buffer, list_entry); if (!p_buffer) break; list_del(&p_buffer->list_entry); list_add_tail(&p_buffer->list_entry, &p_ooo_info->free_buffers_list); } list_add_tail(&p_isle->list_entry, &p_ooo_info->free_isles_list); } list_add_tail(&p_archipelago->list_entry, &p_ooo_info->free_archipelagos_list); }

Contributors

PersonTokensPropCommitsCommitProp
Yuval Mintz205100.00%1100.00%
Total205100.00%1100.00%


void qed_ooo_release_all_isles(struct qed_hwfn *p_hwfn, struct qed_ooo_info *p_ooo_info) { struct qed_ooo_archipelago *p_arch; struct qed_ooo_buffer *p_buffer; struct qed_ooo_isle *p_isle; while (!list_empty(&p_ooo_info->archipelagos_list)) { p_arch = list_first_entry(&p_ooo_info->archipelagos_list, struct qed_ooo_archipelago, list_entry); list_del(&p_arch->list_entry); while (!list_empty(&p_arch->isles_list)) { p_isle = list_first_entry(&p_arch->isles_list, struct qed_ooo_isle, list_entry); list_del(&p_isle->list_entry); while (!list_empty(&p_isle->buffers_list)) { p_buffer = list_first_entry(&p_isle->buffers_list, struct qed_ooo_buffer, list_entry); if (!p_buffer) break; list_del(&p_buffer->list_entry); list_add_tail(&p_buffer->list_entry, &p_ooo_info->free_buffers_list); } list_add_tail(&p_isle->list_entry, &p_ooo_info->free_isles_list); } list_add_tail(&p_arch->list_entry, &p_ooo_info->free_archipelagos_list); } if (!list_empty(&p_ooo_info->ready_buffers_list)) list_splice_tail_init(&p_ooo_info->ready_buffers_list, &p_ooo_info->free_buffers_list); }

Contributors

PersonTokensPropCommitsCommitProp
Yuval Mintz207100.00%1100.00%
Total207100.00%1100.00%


void qed_ooo_setup(struct qed_hwfn *p_hwfn, struct qed_ooo_info *p_ooo_info) { qed_ooo_release_all_isles(p_hwfn, p_ooo_info); memset(p_ooo_info->ooo_history.p_cqes, 0, p_ooo_info->ooo_history.num_of_cqes * sizeof(struct ooo_opaque)); p_ooo_info->ooo_history.head_idx = 0; }

Contributors

PersonTokensPropCommitsCommitProp
Yuval Mintz53100.00%1100.00%
Total53100.00%1100.00%


void qed_ooo_free(struct qed_hwfn *p_hwfn, struct qed_ooo_info *p_ooo_info) { struct qed_ooo_buffer *p_buffer; qed_ooo_release_all_isles(p_hwfn, p_ooo_info); while (!list_empty(&p_ooo_info->free_buffers_list)) { p_buffer = list_first_entry(&p_ooo_info->free_buffers_list, struct qed_ooo_buffer, list_entry); if (!p_buffer) break; list_del(&p_buffer->list_entry); dma_free_coherent(&p_hwfn->cdev->pdev->dev, p_buffer->rx_buffer_size, p_buffer->rx_buffer_virt_addr, p_buffer->rx_buffer_phys_addr); kfree(p_buffer); } kfree(p_ooo_info->p_isles_mem); kfree(p_ooo_info->p_archipelagos_mem); kfree(p_ooo_info->ooo_history.p_cqes); kfree(p_ooo_info); }

Contributors

PersonTokensPropCommitsCommitProp
Yuval Mintz126100.00%1100.00%
Total126100.00%1100.00%


void qed_ooo_put_free_buffer(struct qed_hwfn *p_hwfn, struct qed_ooo_info *p_ooo_info, struct qed_ooo_buffer *p_buffer) { list_add_tail(&p_buffer->list_entry, &p_ooo_info->free_buffers_list); }

Contributors

PersonTokensPropCommitsCommitProp
Yuval Mintz33100.00%1100.00%
Total33100.00%1100.00%


struct qed_ooo_buffer *qed_ooo_get_free_buffer(struct qed_hwfn *p_hwfn, struct qed_ooo_info *p_ooo_info) { struct qed_ooo_buffer *p_buffer = NULL; if (!list_empty(&p_ooo_info->free_buffers_list)) { p_buffer = list_first_entry(&p_ooo_info->free_buffers_list, struct qed_ooo_buffer, list_entry); list_del(&p_buffer->list_entry); } return p_buffer; }

Contributors

PersonTokensPropCommitsCommitProp
Yuval Mintz63100.00%1100.00%
Total63100.00%1100.00%


void qed_ooo_put_ready_buffer(struct qed_hwfn *p_hwfn, struct qed_ooo_info *p_ooo_info, struct qed_ooo_buffer *p_buffer, u8 on_tail) { if (on_tail) list_add_tail(&p_buffer->list_entry, &p_ooo_info->ready_buffers_list); else list_add(&p_buffer->list_entry, &p_ooo_info->ready_buffers_list); }

Contributors

PersonTokensPropCommitsCommitProp
Yuval Mintz54100.00%1100.00%
Total54100.00%1100.00%


struct qed_ooo_buffer *qed_ooo_get_ready_buffer(struct qed_hwfn *p_hwfn, struct qed_ooo_info *p_ooo_info) { struct qed_ooo_buffer *p_buffer = NULL; if (!list_empty(&p_ooo_info->ready_buffers_list)) { p_buffer = list_first_entry(&p_ooo_info->ready_buffers_list, struct qed_ooo_buffer, list_entry); list_del(&p_buffer->list_entry); } return p_buffer; }

Contributors

PersonTokensPropCommitsCommitProp
Yuval Mintz63100.00%1100.00%
Total63100.00%1100.00%


void qed_ooo_delete_isles(struct qed_hwfn *p_hwfn, struct qed_ooo_info *p_ooo_info, u32 cid, u8 drop_isle, u8 drop_size) { struct qed_ooo_archipelago *p_archipelago = NULL; struct qed_ooo_isle *p_isle = NULL; u8 isle_idx; p_archipelago = qed_ooo_seek_archipelago(p_hwfn, p_ooo_info, cid); for (isle_idx = 0; isle_idx < drop_size; isle_idx++) { p_isle = qed_ooo_seek_isle(p_hwfn, p_ooo_info, cid, drop_isle); if (!p_isle) { DP_NOTICE(p_hwfn, "Isle %d is not found(cid %d)\n", drop_isle, cid); return; } if (list_empty(&p_isle->buffers_list)) DP_NOTICE(p_hwfn, "Isle %d is empty(cid %d)\n", drop_isle, cid); else list_splice_tail_init(&p_isle->buffers_list, &p_ooo_info->free_buffers_list); list_del(&p_isle->list_entry); p_ooo_info->cur_isles_number--; list_add(&p_isle->list_entry, &p_ooo_info->free_isles_list); } if (list_empty(&p_archipelago->isles_list)) { list_del(&p_archipelago->list_entry); list_add(&p_archipelago->list_entry, &p_ooo_info->free_archipelagos_list); } }

Contributors

PersonTokensPropCommitsCommitProp
Yuval Mintz193100.00%1100.00%
Total193100.00%1100.00%


void qed_ooo_add_new_isle(struct qed_hwfn *p_hwfn, struct qed_ooo_info *p_ooo_info, u32 cid, u8 ooo_isle, struct qed_ooo_buffer *p_buffer) { struct qed_ooo_archipelago *p_archipelago = NULL; struct qed_ooo_isle *p_prev_isle = NULL; struct qed_ooo_isle *p_isle = NULL; if (ooo_isle > 1) { p_prev_isle = qed_ooo_seek_isle(p_hwfn, p_ooo_info, cid, ooo_isle - 1); if (!p_prev_isle) { DP_NOTICE(p_hwfn, "Isle %d is not found(cid %d)\n", ooo_isle - 1, cid); return; } } p_archipelago = qed_ooo_seek_archipelago(p_hwfn, p_ooo_info, cid); if (!p_archipelago && (ooo_isle != 1)) { DP_NOTICE(p_hwfn, "Connection %d is not found in OOO list\n", cid); return; } if (!list_empty(&p_ooo_info->free_isles_list)) { p_isle = list_first_entry(&p_ooo_info->free_isles_list, struct qed_ooo_isle, list_entry); list_del(&p_isle->list_entry); if (!list_empty(&p_isle->buffers_list)) { DP_NOTICE(p_hwfn, "Free isle is not empty\n"); INIT_LIST_HEAD(&p_isle->buffers_list); } } else { DP_NOTICE(p_hwfn, "No more free isles\n"); return; } if (!p_archipelago && !list_empty(&p_ooo_info->free_archipelagos_list)) { p_archipelago = list_first_entry(&p_ooo_info->free_archipelagos_list, struct qed_ooo_archipelago, list_entry); list_del(&p_archipelago->list_entry); if (!list_empty(&p_archipelago->isles_list)) { DP_NOTICE(p_hwfn, "Free OOO connection is not empty\n"); INIT_LIST_HEAD(&p_archipelago->isles_list); } p_archipelago->cid = cid; list_add(&p_archipelago->list_entry, &p_ooo_info->archipelagos_list); } else if (!p_archipelago) { DP_NOTICE(p_hwfn, "No more free OOO connections\n"); list_add(&p_isle->list_entry, &p_ooo_info->free_isles_list); list_add(&p_buffer->list_entry, &p_ooo_info->free_buffers_list); return; } list_add(&p_buffer->list_entry, &p_isle->buffers_list); p_ooo_info->cur_isles_number++; p_ooo_info->gen_isles_number++; if (p_ooo_info->cur_isles_number > p_ooo_info->max_isles_number) p_ooo_info->max_isles_number = p_ooo_info->cur_isles_number; if (!p_prev_isle) list_add(&p_isle->list_entry, &p_archipelago->isles_list); else list_add(&p_isle->list_entry, &p_prev_isle->list_entry); }

Contributors

PersonTokensPropCommitsCommitProp
Yuval Mintz401100.00%1100.00%
Total401100.00%1100.00%


void qed_ooo_add_new_buffer(struct qed_hwfn *p_hwfn, struct qed_ooo_info *p_ooo_info, u32 cid, u8 ooo_isle, struct qed_ooo_buffer *p_buffer, u8 buffer_side) { struct qed_ooo_isle *p_isle = NULL; p_isle = qed_ooo_seek_isle(p_hwfn, p_ooo_info, cid, ooo_isle); if (!p_isle) { DP_NOTICE(p_hwfn, "Isle %d is not found(cid %d)\n", ooo_isle, cid); return; } if (buffer_side == QED_OOO_LEFT_BUF) list_add(&p_buffer->list_entry, &p_isle->buffers_list); else list_add_tail(&p_buffer->list_entry, &p_isle->buffers_list); }

Contributors

PersonTokensPropCommitsCommitProp
Yuval Mintz101100.00%1100.00%
Total101100.00%1100.00%


void qed_ooo_join_isles(struct qed_hwfn *p_hwfn, struct qed_ooo_info *p_ooo_info, u32 cid, u8 left_isle) { struct qed_ooo_archipelago *p_archipelago = NULL; struct qed_ooo_isle *p_right_isle = NULL; struct qed_ooo_isle *p_left_isle = NULL; p_right_isle = qed_ooo_seek_isle(p_hwfn, p_ooo_info, cid, left_isle + 1); if (!p_right_isle) { DP_NOTICE(p_hwfn, "Right isle %d is not found(cid %d)\n", left_isle + 1, cid); return; } p_archipelago = qed_ooo_seek_archipelago(p_hwfn, p_ooo_info, cid); list_del(&p_right_isle->list_entry); p_ooo_info->cur_isles_number--; if (left_isle) { p_left_isle = qed_ooo_seek_isle(p_hwfn, p_ooo_info, cid, left_isle); if (!p_left_isle) { DP_NOTICE(p_hwfn, "Left isle %d is not found(cid %d)\n", left_isle, cid); return; } list_splice_tail_init(&p_right_isle->buffers_list, &p_left_isle->buffers_list); } else { list_splice_tail_init(&p_right_isle->buffers_list, &p_ooo_info->ready_buffers_list); if (list_empty(&p_archipelago->isles_list)) { list_del(&p_archipelago->list_entry); list_add(&p_archipelago->list_entry, &p_ooo_info->free_archipelagos_list); } } list_add_tail(&p_right_isle->list_entry, &p_ooo_info->free_isles_list); }

Contributors

PersonTokensPropCommitsCommitProp
Yuval Mintz215100.00%1100.00%
Total215100.00%1100.00%


Overall Contributors

PersonTokensPropCommitsCommitProp
Yuval Mintz2323100.00%3100.00%
Total2323100.00%3100.00%
Information contained on this website is for historical information purposes only and does not indicate or represent copyright ownership.
Created with cregit.