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authorYunhong Jiang <yunhong.jiang@intel.com>2015-08-04 12:17:53 -0700
committerYunhong Jiang <yunhong.jiang@intel.com>2015-08-04 15:44:42 -0700
commit9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (patch)
tree1c9cafbcd35f783a87880a10f85d1a060db1a563 /kernel/drivers/infiniband/hw/cxgb3/iwch_cm.h
parent98260f3884f4a202f9ca5eabed40b1354c489b29 (diff)
Add the rt linux 4.1.3-rt3 as base
Import the rt linux 4.1.3-rt3 as OPNFV kvm base. It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and the base is: commit 0917f823c59692d751951bf5ea699a2d1e2f26a2 Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Date: Sat Jul 25 12:13:34 2015 +0200 Prepare v4.1.3-rt3 Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> We lose all the git history this way and it's not good. We should apply another opnfv project repo in future. Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423 Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>
Diffstat (limited to 'kernel/drivers/infiniband/hw/cxgb3/iwch_cm.h')
-rw-r--r--kernel/drivers/infiniband/hw/cxgb3/iwch_cm.h233
1 files changed, 233 insertions, 0 deletions
diff --git a/kernel/drivers/infiniband/hw/cxgb3/iwch_cm.h b/kernel/drivers/infiniband/hw/cxgb3/iwch_cm.h
new file mode 100644
index 000000000..b9efadfff
--- /dev/null
+++ b/kernel/drivers/infiniband/hw/cxgb3/iwch_cm.h
@@ -0,0 +1,233 @@
+/*
+ * Copyright (c) 2006 Chelsio, 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.
+ */
+#ifndef _IWCH_CM_H_
+#define _IWCH_CM_H_
+
+#include <linux/inet.h>
+#include <linux/wait.h>
+#include <linux/spinlock.h>
+#include <linux/kref.h>
+
+#include <rdma/ib_verbs.h>
+#include <rdma/iw_cm.h>
+
+#include "cxgb3_offload.h"
+#include "iwch_provider.h"
+
+#define MPA_KEY_REQ "MPA ID Req Frame"
+#define MPA_KEY_REP "MPA ID Rep Frame"
+
+#define MPA_MAX_PRIVATE_DATA 256
+#define MPA_REV 0 /* XXX - amso1100 uses rev 0 ! */
+#define MPA_REJECT 0x20
+#define MPA_CRC 0x40
+#define MPA_MARKERS 0x80
+#define MPA_FLAGS_MASK 0xE0
+
+#define put_ep(ep) { \
+ PDBG("put_ep (via %s:%u) ep %p refcnt %d\n", __func__, __LINE__, \
+ ep, atomic_read(&((ep)->kref.refcount))); \
+ WARN_ON(atomic_read(&((ep)->kref.refcount)) < 1); \
+ kref_put(&((ep)->kref), __free_ep); \
+}
+
+#define get_ep(ep) { \
+ PDBG("get_ep (via %s:%u) ep %p, refcnt %d\n", __func__, __LINE__, \
+ ep, atomic_read(&((ep)->kref.refcount))); \
+ kref_get(&((ep)->kref)); \
+}
+
+struct mpa_message {
+ u8 key[16];
+ u8 flags;
+ u8 revision;
+ __be16 private_data_size;
+ u8 private_data[0];
+};
+
+struct terminate_message {
+ u8 layer_etype;
+ u8 ecode;
+ __be16 hdrct_rsvd;
+ u8 len_hdrs[0];
+};
+
+#define TERM_MAX_LENGTH (sizeof(struct terminate_message) + 2 + 18 + 28)
+
+enum iwch_layers_types {
+ LAYER_RDMAP = 0x00,
+ LAYER_DDP = 0x10,
+ LAYER_MPA = 0x20,
+ RDMAP_LOCAL_CATA = 0x00,
+ RDMAP_REMOTE_PROT = 0x01,
+ RDMAP_REMOTE_OP = 0x02,
+ DDP_LOCAL_CATA = 0x00,
+ DDP_TAGGED_ERR = 0x01,
+ DDP_UNTAGGED_ERR = 0x02,
+ DDP_LLP = 0x03
+};
+
+enum iwch_rdma_ecodes {
+ RDMAP_INV_STAG = 0x00,
+ RDMAP_BASE_BOUNDS = 0x01,
+ RDMAP_ACC_VIOL = 0x02,
+ RDMAP_STAG_NOT_ASSOC = 0x03,
+ RDMAP_TO_WRAP = 0x04,
+ RDMAP_INV_VERS = 0x05,
+ RDMAP_INV_OPCODE = 0x06,
+ RDMAP_STREAM_CATA = 0x07,
+ RDMAP_GLOBAL_CATA = 0x08,
+ RDMAP_CANT_INV_STAG = 0x09,
+ RDMAP_UNSPECIFIED = 0xff
+};
+
+enum iwch_ddp_ecodes {
+ DDPT_INV_STAG = 0x00,
+ DDPT_BASE_BOUNDS = 0x01,
+ DDPT_STAG_NOT_ASSOC = 0x02,
+ DDPT_TO_WRAP = 0x03,
+ DDPT_INV_VERS = 0x04,
+ DDPU_INV_QN = 0x01,
+ DDPU_INV_MSN_NOBUF = 0x02,
+ DDPU_INV_MSN_RANGE = 0x03,
+ DDPU_INV_MO = 0x04,
+ DDPU_MSG_TOOBIG = 0x05,
+ DDPU_INV_VERS = 0x06
+};
+
+enum iwch_mpa_ecodes {
+ MPA_CRC_ERR = 0x02,
+ MPA_MARKER_ERR = 0x03
+};
+
+enum iwch_ep_state {
+ IDLE = 0,
+ LISTEN,
+ CONNECTING,
+ MPA_REQ_WAIT,
+ MPA_REQ_SENT,
+ MPA_REQ_RCVD,
+ MPA_REP_SENT,
+ FPDU_MODE,
+ ABORTING,
+ CLOSING,
+ MORIBUND,
+ DEAD,
+};
+
+enum iwch_ep_flags {
+ PEER_ABORT_IN_PROGRESS = 0,
+ ABORT_REQ_IN_PROGRESS = 1,
+ RELEASE_RESOURCES = 2,
+ CLOSE_SENT = 3,
+};
+
+struct iwch_ep_common {
+ struct iw_cm_id *cm_id;
+ struct iwch_qp *qp;
+ struct t3cdev *tdev;
+ enum iwch_ep_state state;
+ struct kref kref;
+ spinlock_t lock;
+ struct sockaddr_in local_addr;
+ struct sockaddr_in remote_addr;
+ wait_queue_head_t waitq;
+ int rpl_done;
+ int rpl_err;
+ unsigned long flags;
+};
+
+struct iwch_listen_ep {
+ struct iwch_ep_common com;
+ unsigned int stid;
+ int backlog;
+};
+
+struct iwch_ep {
+ struct iwch_ep_common com;
+ struct iwch_ep *parent_ep;
+ struct timer_list timer;
+ unsigned int atid;
+ u32 hwtid;
+ u32 snd_seq;
+ u32 rcv_seq;
+ struct l2t_entry *l2t;
+ struct dst_entry *dst;
+ struct sk_buff *mpa_skb;
+ struct iwch_mpa_attributes mpa_attr;
+ unsigned int mpa_pkt_len;
+ u8 mpa_pkt[sizeof(struct mpa_message) + MPA_MAX_PRIVATE_DATA];
+ u8 tos;
+ u16 emss;
+ u16 plen;
+ u32 ird;
+ u32 ord;
+};
+
+static inline struct iwch_ep *to_ep(struct iw_cm_id *cm_id)
+{
+ return cm_id->provider_data;
+}
+
+static inline struct iwch_listen_ep *to_listen_ep(struct iw_cm_id *cm_id)
+{
+ return cm_id->provider_data;
+}
+
+static inline int compute_wscale(int win)
+{
+ int wscale = 0;
+
+ while (wscale < 14 && (65535<<wscale) < win)
+ wscale++;
+ return wscale;
+}
+
+/* CM prototypes */
+
+int iwch_connect(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param);
+int iwch_create_listen(struct iw_cm_id *cm_id, int backlog);
+int iwch_destroy_listen(struct iw_cm_id *cm_id);
+int iwch_reject_cr(struct iw_cm_id *cm_id, const void *pdata, u8 pdata_len);
+int iwch_accept_cr(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param);
+int iwch_ep_disconnect(struct iwch_ep *ep, int abrupt, gfp_t gfp);
+int iwch_quiesce_tid(struct iwch_ep *ep);
+int iwch_resume_tid(struct iwch_ep *ep);
+void __free_ep(struct kref *kref);
+void iwch_rearp(struct iwch_ep *ep);
+int iwch_ep_redirect(void *ctx, struct dst_entry *old, struct dst_entry *new, struct l2t_entry *l2t);
+
+int __init iwch_cm_init(void);
+void __exit iwch_cm_term(void);
+extern int peer2peer;
+
+#endif /* _IWCH_CM_H_ */