Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
[linux/fpc-iii.git] / net / rxrpc / local_event.c
blob93b5d910b4a130a8f2641f1a20f0d2e83b60ed56
1 /* AF_RXRPC local endpoint management
3 * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
4 * Written by David Howells (dhowells@redhat.com)
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License
8 * as published by the Free Software Foundation; either version
9 * 2 of the License, or (at your option) any later version.
12 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
14 #include <linux/module.h>
15 #include <linux/net.h>
16 #include <linux/skbuff.h>
17 #include <linux/slab.h>
18 #include <net/sock.h>
19 #include <net/af_rxrpc.h>
20 #include <generated/utsrelease.h>
21 #include "ar-internal.h"
23 static const char rxrpc_version_string[65] = "linux-" UTS_RELEASE " AF_RXRPC";
26 * Reply to a version request
28 static void rxrpc_send_version_request(struct rxrpc_local *local,
29 struct rxrpc_host_header *hdr,
30 struct sk_buff *skb)
32 struct rxrpc_wire_header whdr;
33 struct rxrpc_skb_priv *sp = rxrpc_skb(skb);
34 struct sockaddr_rxrpc srx;
35 struct msghdr msg;
36 struct kvec iov[2];
37 size_t len;
38 int ret;
40 _enter("");
42 if (rxrpc_extract_addr_from_skb(local, &srx, skb) < 0)
43 return;
45 msg.msg_name = &srx.transport;
46 msg.msg_namelen = srx.transport_len;
47 msg.msg_control = NULL;
48 msg.msg_controllen = 0;
49 msg.msg_flags = 0;
51 whdr.epoch = htonl(sp->hdr.epoch);
52 whdr.cid = htonl(sp->hdr.cid);
53 whdr.callNumber = htonl(sp->hdr.callNumber);
54 whdr.seq = 0;
55 whdr.serial = 0;
56 whdr.type = RXRPC_PACKET_TYPE_VERSION;
57 whdr.flags = RXRPC_LAST_PACKET | (~hdr->flags & RXRPC_CLIENT_INITIATED);
58 whdr.userStatus = 0;
59 whdr.securityIndex = 0;
60 whdr._rsvd = 0;
61 whdr.serviceId = htons(sp->hdr.serviceId);
63 iov[0].iov_base = &whdr;
64 iov[0].iov_len = sizeof(whdr);
65 iov[1].iov_base = (char *)rxrpc_version_string;
66 iov[1].iov_len = sizeof(rxrpc_version_string);
68 len = iov[0].iov_len + iov[1].iov_len;
70 _proto("Tx VERSION (reply)");
72 ret = kernel_sendmsg(local->socket, &msg, iov, 2, len);
73 if (ret < 0)
74 _debug("sendmsg failed: %d", ret);
76 _leave("");
80 * Process event packets targetted at a local endpoint.
82 void rxrpc_process_local_events(struct rxrpc_local *local)
84 struct sk_buff *skb;
85 char v;
87 _enter("");
89 skb = skb_dequeue(&local->event_queue);
90 if (skb) {
91 struct rxrpc_skb_priv *sp = rxrpc_skb(skb);
93 rxrpc_see_skb(skb, rxrpc_skb_rx_seen);
94 _debug("{%d},{%u}", local->debug_id, sp->hdr.type);
96 switch (sp->hdr.type) {
97 case RXRPC_PACKET_TYPE_VERSION:
98 if (skb_copy_bits(skb, sizeof(struct rxrpc_wire_header),
99 &v, 1) < 0)
100 return;
101 _proto("Rx VERSION { %02x }", v);
102 if (v == 0)
103 rxrpc_send_version_request(local, &sp->hdr, skb);
104 break;
106 default:
107 /* Just ignore anything we don't understand */
108 break;
111 rxrpc_free_skb(skb, rxrpc_skb_rx_freed);
114 _leave("");