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1 | /*- |
2 | * BSD LICENSE | |
3 | * | |
4 | * Copyright (C) 2008-2012 Daisuke Aoyama <aoyama@peach.ne.jp>. | |
5 | * Copyright (c) Intel Corporation. | |
6 | * All rights reserved. | |
7 | * | |
8 | * Redistribution and use in source and binary forms, with or without | |
9 | * modification, are permitted provided that the following conditions | |
10 | * are met: | |
11 | * | |
12 | * * Redistributions of source code must retain the above copyright | |
13 | * notice, this list of conditions and the following disclaimer. | |
14 | * * Redistributions in binary form must reproduce the above copyright | |
15 | * notice, this list of conditions and the following disclaimer in | |
16 | * the documentation and/or other materials provided with the | |
17 | * distribution. | |
18 | * * Neither the name of Intel Corporation nor the names of its | |
19 | * contributors may be used to endorse or promote products derived | |
20 | * from this software without specific prior written permission. | |
21 | * | |
22 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
23 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
24 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | |
25 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | |
26 | * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
27 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | |
28 | * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | |
29 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | |
30 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
31 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
32 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
33 | */ | |
34 | ||
35 | #include <errno.h> | |
36 | #include <string.h> | |
37 | #include <unistd.h> | |
38 | ||
39 | #include <sys/types.h> | |
40 | ||
41 | #include "spdk/env.h" | |
42 | #include "spdk/event.h" | |
43 | #include "spdk/log.h" | |
44 | #include "spdk/net.h" | |
45 | #include "iscsi/acceptor.h" | |
46 | #include "iscsi/conn.h" | |
47 | #include "iscsi/portal_grp.h" | |
48 | ||
49 | #define ACCEPT_TIMEOUT_US 1000 /* 1ms */ | |
50 | ||
51 | static struct spdk_poller *g_acceptor_poller; | |
52 | ||
53 | static void | |
54 | spdk_iscsi_portal_accept(struct spdk_iscsi_portal *portal) | |
55 | { | |
56 | int rc, sock; | |
57 | ||
58 | if (portal->sock < 0) { | |
59 | return; | |
60 | } | |
61 | ||
62 | while (1) { | |
63 | rc = spdk_sock_accept(portal->sock); | |
64 | if (rc >= 0) { | |
65 | sock = rc; | |
66 | rc = spdk_iscsi_conn_construct(portal, sock); | |
67 | if (rc < 0) { | |
68 | close(sock); | |
69 | SPDK_ERRLOG("spdk_iscsi_connection_construct() failed\n"); | |
70 | break; | |
71 | } | |
72 | } else { | |
73 | if (errno != EAGAIN && errno != EWOULDBLOCK) { | |
74 | SPDK_ERRLOG("accept error(%d): %s\n", errno, strerror(errno)); | |
75 | } | |
76 | break; | |
77 | } | |
78 | } | |
79 | } | |
80 | ||
81 | static void | |
82 | spdk_acceptor(void *arg) | |
83 | { | |
84 | struct spdk_iscsi_globals *iscsi = arg; | |
85 | struct spdk_iscsi_portal_grp *portal_group; | |
86 | struct spdk_iscsi_portal *portal; | |
87 | ||
88 | TAILQ_FOREACH(portal_group, &iscsi->pg_head, tailq) { | |
89 | TAILQ_FOREACH(portal, &portal_group->head, tailq) { | |
90 | spdk_iscsi_portal_accept(portal); | |
91 | } | |
92 | } | |
93 | } | |
94 | ||
95 | void | |
96 | spdk_iscsi_acceptor_start(void) | |
97 | { | |
98 | spdk_poller_register(&g_acceptor_poller, spdk_acceptor, &g_spdk_iscsi, spdk_env_get_current_core(), | |
99 | ACCEPT_TIMEOUT_US); | |
100 | } | |
101 | ||
102 | void | |
103 | spdk_iscsi_acceptor_stop(void) | |
104 | { | |
105 | spdk_poller_unregister(&g_acceptor_poller, NULL); | |
106 | } |