Initial commit: OpenHarmony-v4.0-ReleaseOpenHarmony-v4.0-Release

1 files changed, 91 insertions, 0 deletions

diff --git a/net/smc/smc_ib.h b/net/smc/smc_ib.h
new file mode 100644
index 000000000..f90d15eae
--- /dev/null
+++ b/net/smc/smc_ib.h
@@ -0,0 +1,91 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Shared Memory Communications over RDMA (SMC-R) and RoCE
+ *
+ *  Definitions for IB environment
+ *
+ *  Copyright IBM Corp. 2016
+ *
+ *  Author(s):  Ursula Braun <Ursula Braun@linux.vnet.ibm.com>
+ */
+
+#ifndef _SMC_IB_H
+#define _SMC_IB_H
+
+#include <linux/interrupt.h>
+#include <linux/if_ether.h>
+#include <linux/mutex.h>
+#include <linux/wait.h>
+#include <rdma/ib_verbs.h>
+#include <net/smc.h>
+
+#define SMC_MAX_PORTS                   2       /* Max # of ports */
+#define SMC_GID_SIZE                    sizeof(union ib_gid)
+
+#define SMC_IB_MAX_SEND_SGE             2
+
+struct smc_ib_devices {                 /* list of smc ib devices definition */
+        struct list_head        list;
+        struct mutex            mutex;  /* protects list of smc ib devices */
+};
+
+extern struct smc_ib_devices    smc_ib_devices; /* list of smc ib devices */
+
+struct smc_ib_device {                          /* ib-device infos for smc */
+        struct list_head        list;
+        struct ib_device        *ibdev;
+        struct ib_port_attr     pattr[SMC_MAX_PORTS];   /* ib dev. port attrs */
+        struct ib_event_handler event_handler;  /* global ib_event handler */
+        struct ib_cq            *roce_cq_send;  /* send completion queue */
+        struct ib_cq            *roce_cq_recv;  /* recv completion queue */
+        struct tasklet_struct   send_tasklet;   /* called by send cq handler */
+        struct tasklet_struct   recv_tasklet;   /* called by recv cq handler */
+        char                    mac[SMC_MAX_PORTS][ETH_ALEN];
+                                                /* mac address per port*/
+        u8                      pnetid[SMC_MAX_PORTS][SMC_MAX_PNETID_LEN];
+                                                /* pnetid per port */
+        bool                    pnetid_by_user[SMC_MAX_PORTS];
+                                                /* pnetid defined by user? */
+        u8                      initialized : 1; /* ib dev CQ, evthdl done */
+        struct work_struct      port_event_work;
+        unsigned long           port_event_mask;
+        DECLARE_BITMAP(ports_going_away, SMC_MAX_PORTS);
+        atomic_t                lnk_cnt;        /* number of links on ibdev */
+        wait_queue_head_t       lnks_deleted;   /* wait 4 removal of all links*/
+        struct mutex            mutex;          /* protect dev setup+cleanup */
+};
+
+struct smc_buf_desc;
+struct smc_link;
+
+int smc_ib_register_client(void) __init;
+void smc_ib_unregister_client(void);
+bool smc_ib_port_active(struct smc_ib_device *smcibdev, u8 ibport);
+int smc_ib_buf_map_sg(struct smc_link *lnk,
+                      struct smc_buf_desc *buf_slot,
+                      enum dma_data_direction data_direction);
+void smc_ib_buf_unmap_sg(struct smc_link *lnk,
+                         struct smc_buf_desc *buf_slot,
+                         enum dma_data_direction data_direction);
+void smc_ib_dealloc_protection_domain(struct smc_link *lnk);
+int smc_ib_create_protection_domain(struct smc_link *lnk);
+void smc_ib_destroy_queue_pair(struct smc_link *lnk);
+int smc_ib_create_queue_pair(struct smc_link *lnk);
+int smc_ib_ready_link(struct smc_link *lnk);
+int smc_ib_modify_qp_rts(struct smc_link *lnk);
+int smc_ib_modify_qp_reset(struct smc_link *lnk);
+int smc_ib_modify_qp_error(struct smc_link *lnk);
+long smc_ib_setup_per_ibdev(struct smc_ib_device *smcibdev);
+int smc_ib_get_memory_region(struct ib_pd *pd, int access_flags,
+                             struct smc_buf_desc *buf_slot, u8 link_idx);
+void smc_ib_put_memory_region(struct ib_mr *mr);
+void smc_ib_sync_sg_for_cpu(struct smc_link *lnk,
+                            struct smc_buf_desc *buf_slot,
+                            enum dma_data_direction data_direction);
+void smc_ib_sync_sg_for_device(struct smc_link *lnk,
+                               struct smc_buf_desc *buf_slot,
+                               enum dma_data_direction data_direction);
+int smc_ib_determine_gid(struct smc_ib_device *smcibdev, u8 ibport,
+                         unsigned short vlan_id, u8 gid[], u8 *sgid_index);
+bool smc_ib_is_valid_local_systemid(void);
+#endif