| /* |
| * GPL HEADER START |
| * |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License version 2 only, |
| * as published by the Free Software Foundation. |
| * |
| * This program is distributed in the hope that it will be useful, but |
| * WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * General Public License version 2 for more details (a copy is included |
| * in the LICENSE file that accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License |
| * version 2 along with this program; If not, see |
| * http://www.gnu.org/licenses/gpl-2.0.html |
| * |
| * GPL HEADER END |
| */ |
| /* |
| * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved. |
| * Use is subject to license terms. |
| * |
| * Copyright (c) 2012 - 2015, Intel Corporation. |
| */ |
| /* |
| * This file is part of Lustre, http://www.lustre.org/ |
| * Lustre is a trademark of Seagate, Inc. |
| * |
| * lnet/include/lnet/socklnd.h |
| */ |
| #ifndef __LNET_LNET_SOCKLND_H__ |
| #define __LNET_LNET_SOCKLND_H__ |
| |
| #include "types.h" |
| |
| #define SOCKLND_CONN_NONE (-1) |
| #define SOCKLND_CONN_ANY 0 |
| #define SOCKLND_CONN_CONTROL 1 |
| #define SOCKLND_CONN_BULK_IN 2 |
| #define SOCKLND_CONN_BULK_OUT 3 |
| #define SOCKLND_CONN_NTYPES 4 |
| |
| #define SOCKLND_CONN_ACK SOCKLND_CONN_BULK_IN |
| |
| typedef struct { |
| __u32 kshm_magic; /* magic number of socklnd message */ |
| __u32 kshm_version; /* version of socklnd message */ |
| lnet_nid_t kshm_src_nid; /* sender's nid */ |
| lnet_nid_t kshm_dst_nid; /* destination nid */ |
| lnet_pid_t kshm_src_pid; /* sender's pid */ |
| lnet_pid_t kshm_dst_pid; /* destination pid */ |
| __u64 kshm_src_incarnation; /* sender's incarnation */ |
| __u64 kshm_dst_incarnation; /* destination's incarnation */ |
| __u32 kshm_ctype; /* connection type */ |
| __u32 kshm_nips; /* # IP addrs */ |
| __u32 kshm_ips[0]; /* IP addrs */ |
| } WIRE_ATTR ksock_hello_msg_t; |
| |
| typedef struct { |
| lnet_hdr_t ksnm_hdr; /* lnet hdr */ |
| |
| /* |
| * ksnm_payload is removed because of winnt compiler's limitation: |
| * zero-sized array can only be placed at the tail of [nested] |
| * structure definitions. lnet payload will be stored just after |
| * the body of structure ksock_lnet_msg_t |
| */ |
| } WIRE_ATTR ksock_lnet_msg_t; |
| |
| typedef struct { |
| __u32 ksm_type; /* type of socklnd message */ |
| __u32 ksm_csum; /* checksum if != 0 */ |
| __u64 ksm_zc_cookies[2]; /* Zero-Copy request/ACK cookie */ |
| union { |
| ksock_lnet_msg_t lnetmsg;/* lnet message, it's empty if |
| * it's NOOP */ |
| } WIRE_ATTR ksm_u; |
| } WIRE_ATTR ksock_msg_t; |
| |
| static inline void |
| socklnd_init_msg(ksock_msg_t *msg, int type) |
| { |
| msg->ksm_csum = 0; |
| msg->ksm_type = type; |
| msg->ksm_zc_cookies[0] = msg->ksm_zc_cookies[1] = 0; |
| } |
| |
| #define KSOCK_MSG_NOOP 0xC0 /* ksm_u empty */ |
| #define KSOCK_MSG_LNET 0xC1 /* lnet msg */ |
| |
| /* We need to know this number to parse hello msg from ksocklnd in |
| * other LND (usocklnd, for example) */ |
| #define KSOCK_PROTO_V2 2 |
| #define KSOCK_PROTO_V3 3 |
| |
| #endif |