2 * Copyright (c) 2012 GCT Semiconductor, Inc. All rights reserved.
4 * This software is licensed under the terms of the GNU General Public
5 * License version 2, as published by the Free Software Foundation, and
6 * may be copied, distributed, and modified under those terms.
8 * This program is distributed in the hope that it will be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 * GNU General Public License for more details.
14 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
16 #include <linux/etherdevice.h>
18 #include <linux/ipv6.h>
19 #include <linux/udp.h>
21 #include <linux/if_arp.h>
22 #include <linux/if_ether.h>
23 #include <linux/if_vlan.h>
24 #include <linux/in6.h>
25 #include <linux/tcp.h>
26 #include <linux/icmp.h>
27 #include <linux/icmpv6.h>
28 #include <linux/uaccess.h>
29 #include <net/ndisc.h>
32 #include "netlink_k.h"
34 #include "hci_packet.h"
35 #include "gdm_endian.h"
38 * Netlink protocol number
40 #define NETLINK_LTE 30
45 #define DEFAULT_MTU_SIZE 1500
47 #define IP_VERSION_4 4
48 #define IP_VERSION_6 6
55 static struct device_type wwan_type = {
59 static int gdm_lte_open(struct net_device *dev)
61 netif_start_queue(dev);
65 static int gdm_lte_close(struct net_device *dev)
67 netif_stop_queue(dev);
71 static int gdm_lte_set_config(struct net_device *dev, struct ifmap *map)
73 if (dev->flags & IFF_UP)
78 static void tx_complete(void *arg)
80 struct nic *nic = arg;
82 if (netif_queue_stopped(nic->netdev))
83 netif_wake_queue(nic->netdev);
86 static int gdm_lte_rx(struct sk_buff *skb, struct nic *nic, int nic_type)
90 ret = netif_rx_ni(skb);
91 if (ret == NET_RX_DROP) {
92 nic->stats.rx_dropped++;
94 nic->stats.rx_packets++;
95 nic->stats.rx_bytes += skb->len + ETH_HLEN;
101 static int gdm_lte_emulate_arp(struct sk_buff *skb_in, u32 nic_type)
103 struct nic *nic = netdev_priv(skb_in->dev);
104 struct sk_buff *skb_out;
106 struct vlan_ethhdr vlan_eth;
107 struct arphdr *arp_in;
108 struct arphdr *arp_out;
115 struct arpdata *arp_data_in;
116 struct arpdata *arp_data_out;
118 void *mac_header_data;
121 /* Format the mac header so that it can be put to skb */
122 if (ntohs(((struct ethhdr *)skb_in->data)->h_proto) == ETH_P_8021Q) {
123 memcpy(&vlan_eth, skb_in->data, sizeof(struct vlan_ethhdr));
124 mac_header_data = &vlan_eth;
125 mac_header_len = VLAN_ETH_HLEN;
127 memcpy(ð, skb_in->data, sizeof(struct ethhdr));
128 mac_header_data = ð
129 mac_header_len = ETH_HLEN;
132 /* Get the pointer of the original request */
133 arp_in = (struct arphdr *)(skb_in->data + mac_header_len);
134 arp_data_in = (struct arpdata *)(skb_in->data + mac_header_len +
135 sizeof(struct arphdr));
137 /* Get the pointer of the outgoing response */
138 arp_out = (struct arphdr *)arp_temp;
139 arp_data_out = (struct arpdata *)(arp_temp + sizeof(struct arphdr));
141 /* Copy the arp header */
142 memcpy(arp_out, arp_in, sizeof(struct arphdr));
143 arp_out->ar_op = htons(ARPOP_REPLY);
145 /* Copy the arp payload: based on 2 bytes of mac and fill the IP */
146 arp_data_out->ar_sha[0] = arp_data_in->ar_sha[0];
147 arp_data_out->ar_sha[1] = arp_data_in->ar_sha[1];
148 memcpy(&arp_data_out->ar_sha[2], &arp_data_in->ar_tip[0], 4);
149 memcpy(&arp_data_out->ar_sip[0], &arp_data_in->ar_tip[0], 4);
150 memcpy(&arp_data_out->ar_tha[0], &arp_data_in->ar_sha[0], 6);
151 memcpy(&arp_data_out->ar_tip[0], &arp_data_in->ar_sip[0], 4);
153 /* Fill the destination mac with source mac of the received packet */
154 memcpy(mac_header_data, mac_header_data + ETH_ALEN, ETH_ALEN);
155 /* Fill the source mac with nic's source mac */
156 memcpy(mac_header_data + ETH_ALEN, nic->src_mac_addr, ETH_ALEN);
158 /* Alloc skb and reserve align */
159 skb_out = dev_alloc_skb(skb_in->len);
162 skb_reserve(skb_out, NET_IP_ALIGN);
164 memcpy(skb_put(skb_out, mac_header_len), mac_header_data,
166 memcpy(skb_put(skb_out, sizeof(struct arphdr)), arp_out,
167 sizeof(struct arphdr));
168 memcpy(skb_put(skb_out, sizeof(struct arpdata)), arp_data_out,
169 sizeof(struct arpdata));
171 skb_out->protocol = ((struct ethhdr *)mac_header_data)->h_proto;
172 skb_out->dev = skb_in->dev;
173 skb_reset_mac_header(skb_out);
174 skb_pull(skb_out, ETH_HLEN);
176 gdm_lte_rx(skb_out, nic, nic_type);
181 static int icmp6_checksum(struct ipv6hdr *ipv6, u16 *ptr, int len)
183 unsigned short *w = ptr;
198 memset(&pseudo_header, 0, sizeof(pseudo_header));
199 memcpy(&pseudo_header.ph.ph_src, &ipv6->saddr.in6_u.u6_addr8, 16);
200 memcpy(&pseudo_header.ph.ph_dst, &ipv6->daddr.in6_u.u6_addr8, 16);
201 pseudo_header.ph.ph_len = ipv6->payload_len;
202 pseudo_header.ph.ph_nxt = ipv6->nexthdr;
204 w = (u16 *)&pseudo_header;
205 for (i = 0; i < ARRAY_SIZE(pseudo_header.pa); i++)
206 sum += pseudo_header.pa[i];
214 sum = (sum >> 16) + (sum & 0xFFFF);
221 static int gdm_lte_emulate_ndp(struct sk_buff *skb_in, u32 nic_type)
223 struct nic *nic = netdev_priv(skb_in->dev);
224 struct sk_buff *skb_out;
226 struct vlan_ethhdr vlan_eth;
227 struct neighbour_advertisement {
228 u8 target_address[16];
231 u8 link_layer_address[6];
233 struct neighbour_advertisement na;
234 struct neighbour_solicitation {
235 u8 target_address[16];
237 struct neighbour_solicitation *ns;
238 struct ipv6hdr *ipv6_in;
239 struct ipv6hdr ipv6_out;
240 struct icmp6hdr *icmp6_in;
241 struct icmp6hdr icmp6_out;
243 void *mac_header_data;
246 /* Format the mac header so that it can be put to skb */
247 if (ntohs(((struct ethhdr *)skb_in->data)->h_proto) == ETH_P_8021Q) {
248 memcpy(&vlan_eth, skb_in->data, sizeof(struct vlan_ethhdr));
249 if (ntohs(vlan_eth.h_vlan_encapsulated_proto) != ETH_P_IPV6)
251 mac_header_data = &vlan_eth;
252 mac_header_len = VLAN_ETH_HLEN;
254 memcpy(ð, skb_in->data, sizeof(struct ethhdr));
255 if (ntohs(eth.h_proto) != ETH_P_IPV6)
257 mac_header_data = ð
258 mac_header_len = ETH_HLEN;
261 /* Check if this is IPv6 ICMP packet */
262 ipv6_in = (struct ipv6hdr *)(skb_in->data + mac_header_len);
263 if (ipv6_in->version != 6 || ipv6_in->nexthdr != IPPROTO_ICMPV6)
266 /* Check if this is NDP packet */
267 icmp6_in = (struct icmp6hdr *)(skb_in->data + mac_header_len +
268 sizeof(struct ipv6hdr));
269 if (icmp6_in->icmp6_type == NDISC_ROUTER_SOLICITATION) { /* Check RS */
271 } else if (icmp6_in->icmp6_type == NDISC_NEIGHBOUR_SOLICITATION) {
273 u8 icmp_na[sizeof(struct icmp6hdr) +
274 sizeof(struct neighbour_advertisement)];
275 u8 zero_addr8[16] = {0,};
277 if (memcmp(ipv6_in->saddr.in6_u.u6_addr8, zero_addr8, 16) == 0)
278 /* Duplicate Address Detection: Source IP is all zero */
281 icmp6_out.icmp6_type = NDISC_NEIGHBOUR_ADVERTISEMENT;
282 icmp6_out.icmp6_code = 0;
283 icmp6_out.icmp6_cksum = 0;
284 icmp6_out.icmp6_dataun.un_data32[0] = htonl(0x60000000); /* R=0, S=1, O=1 */
286 ns = (struct neighbour_solicitation *)
287 (skb_in->data + mac_header_len +
288 sizeof(struct ipv6hdr) + sizeof(struct icmp6hdr));
289 memcpy(&na.target_address, ns->target_address, 16);
292 na.link_layer_address[0] = 0x00;
293 na.link_layer_address[1] = 0x0a;
294 na.link_layer_address[2] = 0x3b;
295 na.link_layer_address[3] = 0xaf;
296 na.link_layer_address[4] = 0x63;
297 na.link_layer_address[5] = 0xc7;
299 memcpy(&ipv6_out, ipv6_in, sizeof(struct ipv6hdr));
300 memcpy(ipv6_out.saddr.in6_u.u6_addr8, &na.target_address, 16);
301 memcpy(ipv6_out.daddr.in6_u.u6_addr8,
302 ipv6_in->saddr.in6_u.u6_addr8, 16);
303 ipv6_out.payload_len = htons(sizeof(struct icmp6hdr) +
304 sizeof(struct neighbour_advertisement));
306 memcpy(icmp_na, &icmp6_out, sizeof(struct icmp6hdr));
307 memcpy(icmp_na + sizeof(struct icmp6hdr), &na,
308 sizeof(struct neighbour_advertisement));
310 icmp6_out.icmp6_cksum = icmp6_checksum(&ipv6_out,
311 (u16 *)icmp_na, sizeof(icmp_na));
316 /* Fill the destination mac with source mac of the received packet */
317 memcpy(mac_header_data, mac_header_data + ETH_ALEN, ETH_ALEN);
318 /* Fill the source mac with nic's source mac */
319 memcpy(mac_header_data + ETH_ALEN, nic->src_mac_addr, ETH_ALEN);
321 /* Alloc skb and reserve align */
322 skb_out = dev_alloc_skb(skb_in->len);
325 skb_reserve(skb_out, NET_IP_ALIGN);
327 memcpy(skb_put(skb_out, mac_header_len), mac_header_data,
329 memcpy(skb_put(skb_out, sizeof(struct ipv6hdr)), &ipv6_out,
330 sizeof(struct ipv6hdr));
331 memcpy(skb_put(skb_out, sizeof(struct icmp6hdr)), &icmp6_out,
332 sizeof(struct icmp6hdr));
333 memcpy(skb_put(skb_out, sizeof(struct neighbour_advertisement)), &na,
334 sizeof(struct neighbour_advertisement));
336 skb_out->protocol = ((struct ethhdr *)mac_header_data)->h_proto;
337 skb_out->dev = skb_in->dev;
338 skb_reset_mac_header(skb_out);
339 skb_pull(skb_out, ETH_HLEN);
341 gdm_lte_rx(skb_out, nic, nic_type);
346 static s32 gdm_lte_tx_nic_type(struct net_device *dev, struct sk_buff *skb)
348 struct nic *nic = netdev_priv(dev);
350 struct vlan_ethhdr *vlan_eth;
352 struct ipv6hdr *ipv6;
357 /* NIC TYPE is based on the nic_id of this net_device */
358 nic_type = 0x00000010 | nic->nic_id;
360 /* Get ethernet protocol */
361 eth = (struct ethhdr *)skb->data;
362 if (ntohs(eth->h_proto) == ETH_P_8021Q) {
363 vlan_eth = (struct vlan_ethhdr *)skb->data;
364 mac_proto = ntohs(vlan_eth->h_vlan_encapsulated_proto);
365 network_data = skb->data + VLAN_ETH_HLEN;
366 nic_type |= NIC_TYPE_F_VLAN;
368 mac_proto = ntohs(eth->h_proto);
369 network_data = skb->data + ETH_HLEN;
372 /* Process packet for nic type */
375 nic_type |= NIC_TYPE_ARP;
378 nic_type |= NIC_TYPE_F_IPV4;
379 ip = (struct iphdr *)network_data;
382 if (ip->protocol == IPPROTO_UDP) {
383 struct udphdr *udp = (struct udphdr *)
384 (network_data + sizeof(struct iphdr));
385 if (ntohs(udp->dest) == 67 || ntohs(udp->dest) == 68)
386 nic_type |= NIC_TYPE_F_DHCP;
390 nic_type |= NIC_TYPE_F_IPV6;
391 ipv6 = (struct ipv6hdr *)network_data;
393 if (ipv6->nexthdr == IPPROTO_ICMPV6) /* Check NDP request */ {
394 struct icmp6hdr *icmp6 = (struct icmp6hdr *)
395 (network_data + sizeof(struct ipv6hdr));
396 if (icmp6->icmp6_type == NDISC_NEIGHBOUR_SOLICITATION)
397 nic_type |= NIC_TYPE_ICMPV6;
398 } else if (ipv6->nexthdr == IPPROTO_UDP) /* Check DHCPv6 */ {
399 struct udphdr *udp = (struct udphdr *)
400 (network_data + sizeof(struct ipv6hdr));
401 if (ntohs(udp->dest) == 546 || ntohs(udp->dest) == 547)
402 nic_type |= NIC_TYPE_F_DHCP;
412 static int gdm_lte_tx(struct sk_buff *skb, struct net_device *dev)
414 struct nic *nic = netdev_priv(dev);
421 nic_type = gdm_lte_tx_nic_type(dev, skb);
423 netdev_err(dev, "tx - invalid nic_type\n");
427 if (nic_type & NIC_TYPE_ARP) {
428 if (gdm_lte_emulate_arp(skb, nic_type) == 0) {
434 if (nic_type & NIC_TYPE_ICMPV6) {
435 if (gdm_lte_emulate_ndp(skb, nic_type) == 0) {
442 * Need byte shift (that is, remove VLAN tag) if there is one
443 * For the case of ARP, this breaks the offset as vlan_ethhdr+4
444 * is treated as ethhdr However, it shouldn't be a problem as
445 * the response starts from arp_hdr and ethhdr is created by this
446 * driver based on the NIC mac
448 if (nic_type & NIC_TYPE_F_VLAN) {
449 struct vlan_ethhdr *vlan_eth = (struct vlan_ethhdr *)skb->data;
451 nic->vlan_id = ntohs(vlan_eth->h_vlan_TCI) & VLAN_VID_MASK;
452 data_buf = skb->data + (VLAN_ETH_HLEN - ETH_HLEN);
453 data_len = skb->len - (VLAN_ETH_HLEN - ETH_HLEN);
456 data_buf = skb->data;
460 /* If it is a ICMPV6 packet, clear all the other bits :
461 * for backward compatibility with the firmware
463 if (nic_type & NIC_TYPE_ICMPV6)
464 nic_type = NIC_TYPE_ICMPV6;
466 /* If it is not a dhcp packet, clear all the flag bits :
467 * original NIC, otherwise the special flag (IPVX | DHCP)
469 if (!(nic_type & NIC_TYPE_F_DHCP))
470 nic_type &= NIC_TYPE_MASK;
472 ret = sscanf(dev->name, "lte%d", &idx);
478 ret = nic->phy_dev->send_sdu_func(nic->phy_dev->priv_dev,
480 nic->pdn_table.dft_eps_id, 0,
481 tx_complete, nic, idx,
484 if (ret == TX_NO_BUFFER || ret == TX_NO_SPC) {
485 netif_stop_queue(dev);
486 if (ret == TX_NO_BUFFER)
490 } else if (ret == TX_NO_DEV) {
494 /* Updates tx stats */
496 nic->stats.tx_dropped++;
498 nic->stats.tx_packets++;
499 nic->stats.tx_bytes += data_len;
506 static struct net_device_stats *gdm_lte_stats(struct net_device *dev)
508 struct nic *nic = netdev_priv(dev);
513 static int gdm_lte_event_send(struct net_device *dev, char *buf, int len)
515 struct nic *nic = netdev_priv(dev);
516 struct hci_packet *hci = (struct hci_packet *)buf;
520 ret = sscanf(dev->name, "lte%d", &idx);
524 return netlink_send(lte_event.sock, idx, 0, buf,
526 nic->phy_dev->get_endian(
527 nic->phy_dev->priv_dev), hci->len)
531 static void gdm_lte_event_rcv(struct net_device *dev, u16 type,
534 struct nic *nic = netdev_priv(dev);
536 nic->phy_dev->send_hci_func(nic->phy_dev->priv_dev, msg, len, NULL,
540 int gdm_lte_event_init(void)
542 if (lte_event.ref_cnt == 0)
543 lte_event.sock = netlink_init(NETLINK_LTE, gdm_lte_event_rcv);
545 if (lte_event.sock) {
550 pr_err("event init failed\n");
554 void gdm_lte_event_exit(void)
556 if (lte_event.sock && --lte_event.ref_cnt == 0) {
557 netlink_exit(lte_event.sock);
558 lte_event.sock = NULL;
562 static u8 find_dev_index(u32 nic_type)
566 index = (u8)(nic_type & 0x0000000f);
567 if (index > MAX_NIC_TYPE)
573 static void gdm_lte_netif_rx(struct net_device *dev, char *buf,
574 int len, int flagged_nic_type)
580 struct vlan_ethhdr vlan_eth;
581 void *mac_header_data;
585 nic_type = flagged_nic_type & NIC_TYPE_MASK;
586 nic = netdev_priv(dev);
588 if (flagged_nic_type & NIC_TYPE_F_DHCP) {
589 /* Change the destination mac address
590 * with the one requested the IP
592 if (flagged_nic_type & NIC_TYPE_F_IPV4) {
594 u8 op; /* BOOTREQUEST or BOOTREPLY */
595 u8 htype; /* hardware address type.
598 u8 hlen; /* hardware address length */
599 u8 hops; /* used by relay agents only */
600 u32 xid; /* unique id */
601 u16 secs; /* elapsed since client began
602 * acquisition/renewal
604 u16 flags; /* only one flag so far: */
605 #define BROADCAST_FLAG 0x8000
606 /* "I need broadcast replies" */
607 u32 ciaddr; /* client IP (if client is in
608 * BOUND, RENEW or REBINDING state)
610 u32 yiaddr; /* 'your' (client) IP address */
611 /* IP address of next server to use in
612 * bootstrap, returned in DHCPOFFER,
616 u32 gateway_nip; /* relay agent IP address */
617 u8 chaddr[16]; /* link-layer client hardware
620 u8 sname[64]; /* server host name (ASCIZ) */
621 u8 file[128]; /* boot file name (ASCIZ) */
622 u32 cookie; /* fixed first four option
623 * bytes (99,130,83,99 dec)
626 void *addr = buf + sizeof(struct iphdr) +
627 sizeof(struct udphdr) +
628 offsetof(struct dhcp_packet, chaddr);
629 memcpy(nic->dest_mac_addr, addr, ETH_ALEN);
633 if (nic->vlan_id > 0) {
634 mac_header_data = (void *)&vlan_eth;
635 mac_header_len = VLAN_ETH_HLEN;
637 mac_header_data = (void *)ð
638 mac_header_len = ETH_HLEN;
641 /* Format the data so that it can be put to skb */
642 memcpy(mac_header_data, nic->dest_mac_addr, ETH_ALEN);
643 memcpy(mac_header_data + ETH_ALEN, nic->src_mac_addr, ETH_ALEN);
645 vlan_eth.h_vlan_TCI = htons(nic->vlan_id);
646 vlan_eth.h_vlan_proto = htons(ETH_P_8021Q);
648 if (nic_type == NIC_TYPE_ARP) {
649 /* Should be response: Only happens because
650 * there was a request from the host
652 eth.h_proto = htons(ETH_P_ARP);
653 vlan_eth.h_vlan_encapsulated_proto = htons(ETH_P_ARP);
655 ip_version = buf[0] >> 4;
656 if (ip_version == IP_VERSION_4) {
657 eth.h_proto = htons(ETH_P_IP);
658 vlan_eth.h_vlan_encapsulated_proto = htons(ETH_P_IP);
659 } else if (ip_version == IP_VERSION_6) {
660 eth.h_proto = htons(ETH_P_IPV6);
661 vlan_eth.h_vlan_encapsulated_proto = htons(ETH_P_IPV6);
663 netdev_err(dev, "Unknown IP version %d\n", ip_version);
668 /* Alloc skb and reserve align */
669 skb = dev_alloc_skb(len + mac_header_len + NET_IP_ALIGN);
672 skb_reserve(skb, NET_IP_ALIGN);
674 memcpy(skb_put(skb, mac_header_len), mac_header_data, mac_header_len);
675 memcpy(skb_put(skb, len), buf, len);
677 skb->protocol = ((struct ethhdr *)mac_header_data)->h_proto;
679 skb_reset_mac_header(skb);
680 skb_pull(skb, ETH_HLEN);
682 gdm_lte_rx(skb, nic, nic_type);
685 static void gdm_lte_multi_sdu_pkt(struct phy_dev *phy_dev, char *buf, int len)
687 struct net_device *dev;
688 struct multi_sdu *multi_sdu = (struct multi_sdu *)buf;
689 struct sdu *sdu = NULL;
690 u8 *data = (u8 *)multi_sdu->data;
698 hci_len = gdm_dev16_to_cpu(phy_dev->get_endian(phy_dev->priv_dev),
700 num_packet = gdm_dev16_to_cpu(phy_dev->get_endian(phy_dev->priv_dev),
701 multi_sdu->num_packet);
703 for (i = 0; i < num_packet; i++) {
704 sdu = (struct sdu *)data;
706 cmd_evt = gdm_dev16_to_cpu(phy_dev->
707 get_endian(phy_dev->priv_dev), sdu->cmd_evt);
708 hci_len = gdm_dev16_to_cpu(phy_dev->
709 get_endian(phy_dev->priv_dev), sdu->len);
710 nic_type = gdm_dev32_to_cpu(phy_dev->
711 get_endian(phy_dev->priv_dev), sdu->nic_type);
713 if (cmd_evt != LTE_RX_SDU) {
714 pr_err("rx sdu wrong hci %04x\n", cmd_evt);
718 pr_err("rx sdu invalid len %d\n", hci_len);
722 index = find_dev_index(nic_type);
723 if (index < MAX_NIC_TYPE) {
724 dev = phy_dev->dev[index];
725 gdm_lte_netif_rx(dev, (char *)sdu->data,
726 (int)(hci_len-12), nic_type);
728 pr_err("rx sdu invalid nic_type :%x\n", nic_type);
731 data += ((hci_len+3) & 0xfffc) + HCI_HEADER_SIZE;
735 static void gdm_lte_pdn_table(struct net_device *dev, char *buf, int len)
737 struct nic *nic = netdev_priv(dev);
738 struct hci_pdn_table_ind *pdn_table = (struct hci_pdn_table_ind *)buf;
740 if (pdn_table->activate) {
741 nic->pdn_table.activate = pdn_table->activate;
742 nic->pdn_table.dft_eps_id = gdm_dev32_to_cpu(
743 nic->phy_dev->get_endian(
744 nic->phy_dev->priv_dev),
745 pdn_table->dft_eps_id);
746 nic->pdn_table.nic_type = gdm_dev32_to_cpu(
747 nic->phy_dev->get_endian(
748 nic->phy_dev->priv_dev),
749 pdn_table->nic_type);
751 netdev_info(dev, "pdn activated, nic_type=0x%x\n",
752 nic->pdn_table.nic_type);
754 memset(&nic->pdn_table, 0x00, sizeof(struct pdn_table));
755 netdev_info(dev, "pdn deactivated\n");
759 static int gdm_lte_receive_pkt(struct phy_dev *phy_dev, char *buf, int len)
761 struct hci_packet *hci = (struct hci_packet *)buf;
762 struct hci_pdn_table_ind *pdn_table = (struct hci_pdn_table_ind *)buf;
764 struct net_device *dev;
773 cmd_evt = gdm_dev16_to_cpu(phy_dev->get_endian(phy_dev->priv_dev),
776 dev = phy_dev->dev[0];
782 sdu = (struct sdu *)hci->data;
783 nic_type = gdm_dev32_to_cpu(phy_dev->
784 get_endian(phy_dev->priv_dev), sdu->nic_type);
785 index = find_dev_index(nic_type);
786 dev = phy_dev->dev[index];
787 gdm_lte_netif_rx(dev, hci->data, len, nic_type);
789 case LTE_RX_MULTI_SDU:
790 gdm_lte_multi_sdu_pkt(phy_dev, buf, len);
792 case LTE_LINK_ON_OFF_INDICATION:
793 netdev_info(dev, "link %s\n",
794 ((struct hci_connect_ind *)buf)->connect
797 case LTE_PDN_TABLE_IND:
798 pdn_table = (struct hci_pdn_table_ind *)buf;
799 nic_type = gdm_dev32_to_cpu(phy_dev->
800 get_endian(phy_dev->priv_dev),
801 pdn_table->nic_type);
802 index = find_dev_index(nic_type);
803 dev = phy_dev->dev[index];
804 gdm_lte_pdn_table(dev, buf, len);
807 ret = gdm_lte_event_send(dev, buf, len);
814 static int rx_complete(void *arg, void *data, int len, int context)
816 struct phy_dev *phy_dev = (struct phy_dev *)arg;
818 return gdm_lte_receive_pkt(phy_dev, (char *)data, len);
821 void start_rx_proc(struct phy_dev *phy_dev)
825 for (i = 0; i < MAX_RX_SUBMIT_COUNT; i++)
826 phy_dev->rcv_func(phy_dev->priv_dev,
827 rx_complete, phy_dev, USB_COMPLETE);
830 static struct net_device_ops gdm_netdev_ops = {
831 .ndo_open = gdm_lte_open,
832 .ndo_stop = gdm_lte_close,
833 .ndo_set_config = gdm_lte_set_config,
834 .ndo_start_xmit = gdm_lte_tx,
835 .ndo_get_stats = gdm_lte_stats,
838 static u8 gdm_lte_macaddr[ETH_ALEN] = {0x00, 0x0a, 0x3b, 0x00, 0x00, 0x00};
840 static void form_mac_address(u8 *dev_addr, u8 *nic_src, u8 *nic_dest,
841 u8 *mac_address, u8 index)
843 /* Form the dev_addr */
845 memcpy(dev_addr, gdm_lte_macaddr, ETH_ALEN);
847 memcpy(dev_addr, mac_address, ETH_ALEN);
849 /* The last byte of the mac address
850 * should be less than or equal to 0xFC
852 dev_addr[ETH_ALEN-1] += index;
854 /* Create random nic src and copy the first
855 * 3 bytes to be the same as dev_addr
857 random_ether_addr(nic_src);
858 memcpy(nic_src, dev_addr, 3);
860 /* Copy the nic_dest from dev_addr*/
861 memcpy(nic_dest, dev_addr, ETH_ALEN);
864 static void validate_mac_address(u8 *mac_address)
866 /* if zero address or multicast bit set, restore the default value */
867 if (is_zero_ether_addr(mac_address) || (mac_address[0] & 0x01)) {
868 pr_err("MAC invalid, restoring default\n");
869 memcpy(mac_address, gdm_lte_macaddr, 6);
873 int register_lte_device(struct phy_dev *phy_dev,
874 struct device *dev, u8 *mac_address)
877 struct net_device *net;
878 char pdn_dev_name[16];
882 validate_mac_address(mac_address);
884 for (index = 0; index < MAX_NIC_TYPE; index++) {
885 /* Create device name lteXpdnX */
886 sprintf(pdn_dev_name, "lte%%dpdn%d", index);
888 /* Allocate netdev */
889 net = alloc_netdev(sizeof(struct nic), pdn_dev_name,
890 NET_NAME_UNKNOWN, ether_setup);
892 pr_err("alloc_netdev failed\n");
896 net->netdev_ops = &gdm_netdev_ops;
897 net->flags &= ~IFF_MULTICAST;
898 net->mtu = DEFAULT_MTU_SIZE;
900 nic = netdev_priv(net);
901 memset(nic, 0, sizeof(struct nic));
903 nic->phy_dev = phy_dev;
913 SET_NETDEV_DEV(net, dev);
914 SET_NETDEV_DEVTYPE(net, &wwan_type);
916 ret = register_netdev(net);
920 netif_carrier_on(net);
922 phy_dev->dev[index] = net;
928 unregister_lte_device(phy_dev);
933 void unregister_lte_device(struct phy_dev *phy_dev)
935 struct net_device *net;
938 for (index = 0; index < MAX_NIC_TYPE; index++) {
939 net = phy_dev->dev[index];
943 unregister_netdev(net);