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Kernel
提交 464a77dd 编写于 作者: S Steven Toth 提交者： Mauro Carvalho Chehab
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V4L/DVB (8261): sms1xxx: remove smsnet.o 

Signed-off-by: NSteven Toth <stoth@hauppauge.com>
Signed-off-by: NMichael Krufky <mkrufky@linuxtv.org>
Signed-off-by: NMauro Carvalho Chehab <mchehab@infradead.org>
上级 7315b082
隐藏空白更改
内联 并排
Showing with 1 addition and 448 deletion
drivers/media/mdtv/Makefile
浏览文件 @ 464a77dd
......@@ -4,6 +4,6 @@
smscore-objs := smschar.o smscoreapi.o
obj-$(CONFIG_MDTV_SIANO_STELLAR_COMMON) += smscore.o smsnet.o
obj-$(CONFIG_MDTV_SIANO_STELLAR_COMMON) += smscore.o
obj-$(CONFIG_MDTV_SIANO_STELLAR_USB) += smsusb.o
obj-$(CONFIG_MDTV_SIANO_STELLAR_USB) += smsdvb.o
drivers/media/mdtv/smsnet.c 已删除 100644 → 0
浏览文件 @ 7315b082
#include <linux/module.h>
#include <linux/init.h>
#include <linux/netdevice.h> /* struct device, and other headers */
#include <linux/etherdevice.h> /* eth_type_trans */
#include <linux/ip.h> /* struct iphdr */
#include <linux/ipv6.h> /* struct ipv6hdr */
#include <linux/in.h>
#include "smskdefs.h" // page, scatterlist, kmutex
#include "smscoreapi.h"
#include "smstypes.h"
#define IPV4VERSION 0x40
#define IPV6VERSION 0x60
#define GETIPVERSION(_x_) ((_x_) & 0xf0)
typedef struct _smsnet_client
{
struct list_head entry;
smscore_device_t *coredev;
smscore_client_t *smsclient;
int packet_length, splitpacket_length;
int header_length, splitheader_length;
u8 splitpacket[ETH_DATA_LEN];
} smsnet_client_t;
struct list_head g_smsnet_clients;
kmutex_t g_smsnet_clientslock;
struct net_device *g_smsnet_device = NULL;
struct net_device_stats g_smsnet_stats;
int g_smsnet_inuse = 0;
void smsnet_send_packet(u8* buffer, int length)
{
u8 *eth;
struct sk_buff *skb = dev_alloc_skb(length + ETH_HLEN + NET_IP_ALIGN);
if (!skb)
{
g_smsnet_stats.rx_dropped++;
return;
}
skb_reserve(skb, NET_IP_ALIGN);
eth = (u8 *) skb_put(skb, length + ETH_HLEN);
memcpy(eth + ETH_HLEN, buffer, length);
eth[6] = 0;
eth[7] = 1;
eth[8] = 1;
eth[9] = 3;
eth[10] = 4;
eth[11] = 5;
if (GETIPVERSION(*buffer) == IPV4VERSION)
{
eth[0] = 1;
eth[1] = 0;
eth[2] = 0x5e;
eth[3] = buffer[17] & 0x7f;
eth[4] = buffer[18];
eth[5] = buffer[19];
eth[12] = 0x08;
eth[13] = 0x00;
}
else
{
// todo: ip6 mcast address
eth[12] = 0x86;
eth[13] = 0xdd;
}
skb->dev = g_smsnet_device;
skb->protocol = eth_type_trans(skb, g_smsnet_device);
skb->ip_summed = CHECKSUM_UNNECESSARY;
g_smsnet_stats.rx_packets ++;
g_smsnet_stats.rx_bytes += skb->len;
netif_rx(skb);
}
int check_header(smsnet_client_t* client, u8* buffer)
{
struct iphdr *ip4_hdr;
struct ipv6hdr *ip6_hdr;
struct udphdr *udp_hdr;
u16 csum;
// check if packet header is valid and it is a UDP
if (GETIPVERSION(*buffer) == IPV4VERSION)
{
ip4_hdr = (struct iphdr*) buffer;
csum = ip4_hdr->check;
ip4_hdr->check = 0;
// check header checksum for IPv4 packets
if(ip4_hdr->protocol != IPPROTO_UDP || csum != ip_fast_csum(buffer, ip4_hdr->ihl))
{
ip4_hdr->check = csum;
return 0;
}
ip4_hdr->check = csum;
client->packet_length = ntohs(ip4_hdr->tot_len);
}
else
{
ip6_hdr = (struct ipv6hdr *) buffer;
udp_hdr = (struct udphdr *)(ip6_hdr + 1);
if ((ip6_hdr->nexthdr != IPPROTO_UDP) ||
(ip6_hdr->payload_len != udp_hdr->len))
{
return 0;
}
client->packet_length = ntohs(ip6_hdr->payload_len) + sizeof(struct ipv6hdr);
}
// check for abnormal packet length
if (client->packet_length > ETH_DATA_LEN)
return 0;
return 1;
}
int smsnet_onresponse(void *context, smscore_buffer_t *cb)
{
smsnet_client_t *client = (smsnet_client_t *) context;
int length, rest;
u8 ip_ver, *buffer;
buffer = ((u8*) cb->p) + cb->offset + sizeof(SmsMsgHdr_ST);
length = cb->size - sizeof(SmsMsgHdr_ST);
if (client->splitheader_length)
{
// how much data is missing ?
rest = client->header_length - client->splitheader_length;
// do we have enough in this buffer ?
rest = min(rest, length);
memcpy(&client->splitpacket[client->splitheader_length], buffer, rest);
client->splitheader_length += rest;
if (client->splitheader_length != client->header_length)
goto exit;
if (check_header(client, client->splitpacket))
{
buffer += rest;
length -= rest;
client->splitpacket_length = client->header_length;
}
client->splitheader_length = 0;
}
if (client->splitpacket_length)
{
// how much data is missing ?
rest = client->packet_length - client->splitpacket_length;
// do we have enough in this buffer ?
rest = min(rest, length);
memcpy(&client->splitpacket[client->splitpacket_length], buffer, rest);
client->splitpacket_length += rest;
if (client->splitpacket_length != client->packet_length)
goto exit;
client->splitpacket_length = 0;
smsnet_send_packet(client->splitpacket, client->packet_length);
buffer += rest;
length -= rest;
}
while (length > 0)
{
ip_ver = GETIPVERSION(*buffer);
while (length && (ip_ver != IPV4VERSION) && (ip_ver != IPV6VERSION))
{
buffer++;
length--;
ip_ver = GETIPVERSION(*buffer);
}
// No more data in section
if (!length)
break;
// Set the header length at start of packet according to the version
// no problem with the IP header cast, since we have at least 1 byte (we use only the first byte)
client->header_length = (ip_ver == IPV4VERSION) ? (((struct iphdr *) buffer)->ihl * 4) : (sizeof(struct ipv6hdr) + sizeof(struct udphdr));
// Check that Header length is at least 20 (min IPv4 length)
if (client->header_length < 20)
{
length--;
buffer++;
continue;
}
// check split header case
if (client->header_length > length)
{
memcpy(client->splitpacket, buffer, length);
client->splitheader_length = length;
break;
}
if (check_header(client, buffer))
{
// check split packet case
if (client->packet_length > length)
{
memcpy(client->splitpacket, buffer, length);
client->splitpacket_length = length;
break;
}
}
else
{
length --;
buffer ++;
continue;
}
smsnet_send_packet(buffer, client->packet_length);
buffer += client->packet_length;
length -= client->packet_length;
}
exit:
smscore_putbuffer(client->coredev, cb);
return 0;
}
void smsnet_unregister_client(smsnet_client_t* client)
{
// must be called under clientslock
list_del(&client->entry);
smscore_unregister_client(client->smsclient);
kfree(client);
}
void smsnet_onremove(void *context)
{
kmutex_lock(&g_smsnet_clientslock);
smsnet_unregister_client((smsnet_client_t*) context);
kmutex_unlock(&g_smsnet_clientslock);
}
int smsnet_hotplug(smscore_device_t *coredev, struct device* device, int arrival)
{
smsclient_params_t params;
smsnet_client_t* client;
int rc;
// device removal handled by onremove callback
if (!arrival)
return 0;
client = kzalloc(sizeof(smsnet_client_t), GFP_KERNEL);
if (!client)
{
printk(KERN_INFO "%s kmalloc() failed\n", __FUNCTION__);
return -ENOMEM;
}
params.initial_id = 0;
params.data_type = MSG_SMS_DATA_MSG;
params.onresponse_handler = smsnet_onresponse;
params.onremove_handler = smsnet_onremove;
params.context = client;
rc = smscore_register_client(coredev, &params, &client->smsclient);
if (rc < 0)
{
printk(KERN_INFO "%s smscore_register_client() failed %d\n", __FUNCTION__, rc);
kfree(client);
return rc;
}
client->coredev = coredev;
kmutex_lock(&g_smsnet_clientslock);
list_add(&client->entry, &g_smsnet_clients);
kmutex_unlock(&g_smsnet_clientslock);
printk(KERN_INFO "%s success\n", __FUNCTION__);
return 0;
}
static int smsnet_open(struct net_device *dev)
{
g_smsnet_inuse ++;
netif_start_queue(dev);
printk(KERN_INFO "%s, %d\n", __FUNCTION__, g_smsnet_inuse);
return 0;
}
static int smsnet_stop(struct net_device *dev)
{
netif_stop_queue(dev);
g_smsnet_inuse --;
printk(KERN_INFO "%s, %d\n", __FUNCTION__, g_smsnet_inuse);
return 0;
}
static int smsnet_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
{
printk(KERN_INFO "%s\n", __FUNCTION__);
dev_kfree_skb(skb);
return 0;
}
static struct net_device_stats * smsnet_get_stats(struct net_device *dev)
{
return &g_smsnet_stats;
}
static void smsnet_set_multicast_list(struct net_device *dev)
{
printk(KERN_INFO "%s %d\n", __FUNCTION__, dev->mc_count);
if (dev->mc_count)
{
struct dev_mc_list *p;
for (p = dev->mc_list; p; p = p->next)
printk(KERN_INFO "%s %d %02x %02x %02x %02x %02x %02x %02x %02x\n", __FUNCTION__, p->dmi_addrlen,
p->dmi_addr[0], p->dmi_addr[1], p->dmi_addr[2], p->dmi_addr[3],
p->dmi_addr[4], p->dmi_addr[5], p->dmi_addr[6], p->dmi_addr[7]
);
}
}
static void smsnet_setup_device(struct net_device *dev)
{
ether_setup(dev);
dev->open = smsnet_open;
dev->stop = smsnet_stop;
dev->hard_start_xmit = smsnet_hard_start_xmit;
dev->get_stats = smsnet_get_stats;
dev->set_multicast_list = smsnet_set_multicast_list;
dev->mc_count = 0;
dev->hard_header_cache = NULL;
memcpy(dev->dev_addr, "\0SIANO", ETH_ALEN);
dev->flags |= IFF_NOARP;
dev->features |= NETIF_F_NO_CSUM;
}
int smsnet_module_init(void)
{
int rc;
INIT_LIST_HEAD(&g_smsnet_clients);
kmutex_init(&g_smsnet_clientslock);
memset(&g_smsnet_stats, 0, sizeof(g_smsnet_stats));
g_smsnet_device = alloc_netdev(0, "sms", smsnet_setup_device);
if (!g_smsnet_device)
{
printk(KERN_INFO "%s alloc_netdev() failed\n", __FUNCTION__);
return -ENOMEM;
}
rc = register_netdev(g_smsnet_device);
if (rc < 0)
{
printk(KERN_INFO "%s register_netdev() failed %d\n", __FUNCTION__, rc);
free_netdev(g_smsnet_device);
return rc;
}
rc = smscore_register_hotplug(smsnet_hotplug);
printk(KERN_INFO "%s, rc %d\n", __FUNCTION__, rc);
return rc;
}
void smsnet_module_exit(void)
{
if (g_smsnet_device)
{
unregister_netdev(g_smsnet_device);
free_netdev(g_smsnet_device);
g_smsnet_device = NULL;
}
smscore_unregister_hotplug(smsnet_hotplug);
kmutex_lock(&g_smsnet_clientslock);
while (!list_empty(&g_smsnet_clients))
smsnet_unregister_client((smsnet_client_t*) g_smsnet_clients.next);
kmutex_unlock(&g_smsnet_clientslock);
printk(KERN_INFO "%s\n", __FUNCTION__);
}
module_init(smsnet_module_init);
module_exit(smsnet_module_exit);
MODULE_DESCRIPTION("smsnet dvb-h ip sink module");
MODULE_AUTHOR("Anatoly Greenblatt,,, (anatolyg@siano-ms.com)");
MODULE_LICENSE("GPL");
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