Adding upstream version 6.6.15.upstream/6.6.15

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 119 insertions, 0 deletions

diff --git a/net/smc/smc_ib.h b/net/smc/smc_ib.h
new file mode 100644
index 0000000000..ef8ac2b754
--- /dev/null
+++ b/net/smc/smc_ib.h
@@ -0,0 +1,119 @@
+/* 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 */
+extern struct smc_lgr_list smc_lgr_list; /* list of linkgroups */
+
+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 */
+	atomic_t		lnk_cnt_by_port[SMC_MAX_PORTS];
+						/* number of links per port */
+	int			ndev_ifidx[SMC_MAX_PORTS]; /* ndev if indexes */
+};
+
+static inline __be32 smc_ib_gid_to_ipv4(u8 gid[SMC_GID_SIZE])
+{
+	struct in6_addr *addr6 = (struct in6_addr *)gid;
+
+	if (ipv6_addr_v4mapped(addr6) ||
+	    !(addr6->s6_addr32[0] | addr6->s6_addr32[1] | addr6->s6_addr32[2]))
+		return addr6->s6_addr32[3];
+	return cpu_to_be32(INADDR_NONE);
+}
+
+static inline struct net *smc_ib_net(struct smc_ib_device *smcibdev)
+{
+	if (smcibdev && smcibdev->ibdev)
+		return read_pnet(&smcibdev->ibdev->coredev.rdma_net);
+	return NULL;
+}
+
+struct smc_init_info_smcrv2;
+struct smc_buf_desc;
+struct smc_link;
+
+void smc_ib_ndev_change(struct net_device *ndev, unsigned long event);
+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_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);
+bool smc_ib_is_sg_need_sync(struct smc_link *lnk,
+			    struct smc_buf_desc *buf_slot);
+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,
+			 struct smc_init_info_smcrv2 *smcrv2);
+int smc_ib_find_route(struct net *net, __be32 saddr, __be32 daddr,
+		      u8 nexthop_mac[], u8 *uses_gateway);
+bool smc_ib_is_valid_local_systemid(void);
+int smcr_nl_get_device(struct sk_buff *skb, struct netlink_callback *cb);
+#endif