Greg Kroah-Hartman
598cf27219
Link: https://lore.kernel.org/r/20260217200002.683975158@linuxfoundation.org Tested-by: Florian Fainelli <florian.fainelli@broadcom.com> Tested-by: Takeshi Ogasawara <takeshi.ogasawara@futuring-girl.com> Tested-by: Peter Schneider <pschneider1968@googlemail.com> Tested-by: Jon Hunter <jonathanh@nvidia.com> Tested-by: Salvatore Bonaccorso <carnil@debian.org> Tested-by: Brett A C Sheffield <bacs@librecast.net> Tested-by: Mark Brown <broonie@kernel.org> Tested-by: Luna Jernberg <droidbittin@gmail.com> Tested-by: Ronald Warsow <rwarsow@gmx.de> Tested-by: Justin M. Forbes <jforbes@fedoraproject.org> Tested-by: Ron Economos <re@w6rz.net> Tested-by: Miguel Ojeda <ojeda@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
85 lines
2.0 KiB
C
85 lines
2.0 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
|
|
/* AF_RXRPC local endpoint management
|
|
*
|
|
* Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
|
|
* Written by David Howells (dhowells@redhat.com)
|
|
*/
|
|
|
|
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
|
|
|
|
#include <linux/module.h>
|
|
#include <linux/net.h>
|
|
#include <linux/skbuff.h>
|
|
#include <linux/slab.h>
|
|
#include <net/sock.h>
|
|
#include <net/af_rxrpc.h>
|
|
#include <generated/utsrelease.h>
|
|
#include "ar-internal.h"
|
|
|
|
static char rxrpc_version_string[65]; // "linux-" UTS_RELEASE " AF_RXRPC";
|
|
|
|
/*
|
|
* Generate the VERSION packet string.
|
|
*/
|
|
void rxrpc_gen_version_string(void)
|
|
{
|
|
snprintf(rxrpc_version_string, sizeof(rxrpc_version_string),
|
|
"linux-%.49s AF_RXRPC", UTS_RELEASE);
|
|
}
|
|
|
|
/*
|
|
* Reply to a version request
|
|
*/
|
|
void rxrpc_send_version_request(struct rxrpc_local *local,
|
|
struct rxrpc_host_header *hdr,
|
|
struct sk_buff *skb)
|
|
{
|
|
struct rxrpc_wire_header whdr;
|
|
struct rxrpc_skb_priv *sp = rxrpc_skb(skb);
|
|
struct sockaddr_rxrpc srx;
|
|
struct msghdr msg;
|
|
struct kvec iov[2];
|
|
size_t len;
|
|
int ret;
|
|
|
|
_enter("");
|
|
|
|
if (rxrpc_extract_addr_from_skb(&srx, skb) < 0)
|
|
return;
|
|
|
|
msg.msg_name = &srx.transport;
|
|
msg.msg_namelen = srx.transport_len;
|
|
msg.msg_control = NULL;
|
|
msg.msg_controllen = 0;
|
|
msg.msg_flags = 0;
|
|
|
|
whdr.epoch = htonl(sp->hdr.epoch);
|
|
whdr.cid = htonl(sp->hdr.cid);
|
|
whdr.callNumber = htonl(sp->hdr.callNumber);
|
|
whdr.seq = 0;
|
|
whdr.serial = 0;
|
|
whdr.type = RXRPC_PACKET_TYPE_VERSION;
|
|
whdr.flags = RXRPC_LAST_PACKET | (~hdr->flags & RXRPC_CLIENT_INITIATED);
|
|
whdr.userStatus = 0;
|
|
whdr.securityIndex = 0;
|
|
whdr._rsvd = 0;
|
|
whdr.serviceId = htons(sp->hdr.serviceId);
|
|
|
|
iov[0].iov_base = &whdr;
|
|
iov[0].iov_len = sizeof(whdr);
|
|
iov[1].iov_base = (char *)rxrpc_version_string;
|
|
iov[1].iov_len = sizeof(rxrpc_version_string);
|
|
|
|
len = iov[0].iov_len + iov[1].iov_len;
|
|
|
|
ret = kernel_sendmsg(local->socket, &msg, iov, 2, len);
|
|
if (ret < 0)
|
|
trace_rxrpc_tx_fail(local->debug_id, 0, ret,
|
|
rxrpc_tx_point_version_reply);
|
|
else
|
|
trace_rxrpc_tx_packet(local->debug_id, &whdr,
|
|
rxrpc_tx_point_version_reply);
|
|
|
|
_leave("");
|
|
}
|