diff options
Diffstat (limited to 'drivers/media')
| -rw-r--r-- | drivers/media/mdtv/Makefile | 2 | ||||
| -rw-r--r-- | drivers/media/mdtv/smsnet.c | 447 |
2 files changed, 1 insertions, 448 deletions
diff --git a/drivers/media/mdtv/Makefile b/drivers/media/mdtv/Makefile index 9798657c7a5..c3cf917d726 100644 --- a/drivers/media/mdtv/Makefile +++ b/drivers/media/mdtv/Makefile @@ -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 diff --git a/drivers/media/mdtv/smsnet.c b/drivers/media/mdtv/smsnet.c deleted file mode 100644 index 5b70d1261e5..00000000000 --- a/drivers/media/mdtv/smsnet.c +++ /dev/null @@ -1,447 +0,0 @@ -#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, ¶ms, &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"); |