cregit-Linux how code gets into the kernel

Release 4.11 net/rxrpc/local_event.c

Directory: net/rxrpc
/* AF_RXRPC local endpoint management
 *
 * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
 * Written by David Howells (dhowells@redhat.com)
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version
 * 2 of the License, or (at your option) any later version.
 */


#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 const char rxrpc_version_string[65] = "linux-" UTS_RELEASE " AF_RXRPC";

/*
 * Reply to a version request
 */

static 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; _proto("Tx VERSION (reply)"); ret = kernel_sendmsg(local->socket, &msg, iov, 2, len); if (ret < 0) _debug("sendmsg failed: %d", ret); _leave(""); }

Contributors

PersonTokensPropCommitsCommitProp
David Howells316100.00%2100.00%
Total316100.00%2100.00%

/* * Process event packets targetted at a local endpoint. */
void rxrpc_process_local_events(struct rxrpc_local *local) { struct sk_buff *skb; char v; _enter(""); skb = skb_dequeue(&local->event_queue); if (skb) { struct rxrpc_skb_priv *sp = rxrpc_skb(skb); rxrpc_see_skb(skb, rxrpc_skb_rx_seen); _debug("{%d},{%u}", local->debug_id, sp->hdr.type); switch (sp->hdr.type) { case RXRPC_PACKET_TYPE_VERSION: if (skb_copy_bits(skb, sizeof(struct rxrpc_wire_header), &v, 1) < 0) return; _proto("Rx VERSION { %02x }", v); if (v == 0) rxrpc_send_version_request(local, &sp->hdr, skb); break; default: /* Just ignore anything we don't understand */ break; } rxrpc_free_skb(skb, rxrpc_skb_rx_freed); } _leave(""); }

Contributors

PersonTokensPropCommitsCommitProp
David Howells146100.00%5100.00%
Total146100.00%5100.00%


Overall Contributors

PersonTokensPropCommitsCommitProp
David Howells508100.00%6100.00%
Total508100.00%6100.00%
Directory: net/rxrpc
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