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path: root/drivers/staging/gdm724x/gdm_lte.c
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Diffstat (limited to 'drivers/staging/gdm724x/gdm_lte.c')
-rw-r--r--drivers/staging/gdm724x/gdm_lte.c187
1 files changed, 129 insertions, 58 deletions
diff --git a/drivers/staging/gdm724x/gdm_lte.c b/drivers/staging/gdm724x/gdm_lte.c
index 74a03608b2dd..64c55b99fda4 100644
--- a/drivers/staging/gdm724x/gdm_lte.c
+++ b/drivers/staging/gdm724x/gdm_lte.c
@@ -131,7 +131,8 @@ static int gdm_lte_emulate_arp(struct sk_buff *skb_in, u32 nic_type)
/* Get the pointer of the original request */
arp_in = (struct arphdr *)(skb_in->data + mac_header_len);
- arp_data_in = (struct arpdata *)(skb_in->data + mac_header_len + sizeof(struct arphdr));
+ arp_data_in = (struct arpdata *)(skb_in->data + mac_header_len +
+ sizeof(struct arphdr));
/* Get the pointer of the outgoing response */
arp_out = (struct arphdr *)arp_temp;
@@ -160,9 +161,12 @@ static int gdm_lte_emulate_arp(struct sk_buff *skb_in, u32 nic_type)
return -ENOMEM;
skb_reserve(skb_out, NET_IP_ALIGN);
- memcpy(skb_put(skb_out, mac_header_len), mac_header_data, mac_header_len);
- memcpy(skb_put(skb_out, sizeof(struct arphdr)), arp_out, sizeof(struct arphdr));
- memcpy(skb_put(skb_out, sizeof(struct arpdata)), arp_data_out, sizeof(struct arpdata));
+ memcpy(skb_put(skb_out, mac_header_len), mac_header_data,
+ mac_header_len);
+ memcpy(skb_put(skb_out, sizeof(struct arphdr)), arp_out,
+ sizeof(struct arphdr));
+ memcpy(skb_put(skb_out, sizeof(struct arpdata)), arp_data_out,
+ sizeof(struct arpdata));
skb_out->protocol = ((struct ethhdr *)mac_header_data)->h_proto;
skb_out->dev = skb_in->dev;
@@ -198,7 +202,7 @@ static int icmp6_checksum(struct ipv6hdr *ipv6, u16 *ptr, int len)
pseudo_header.ph.ph_nxt = ipv6->nexthdr;
w = (u16 *)&pseudo_header;
- for (i = 0; i < sizeof(pseudo_header.pa) / sizeof(pseudo_header.pa[0]); i++)
+ for (i = 0; i < ARRAY_SIZE(pseudo_header.pa); i++)
sum += pseudo_header.pa[i];
w = ptr;
@@ -260,11 +264,14 @@ static int gdm_lte_emulate_ndp(struct sk_buff *skb_in, u32 nic_type)
return -1;
/* Check if this is NDP packet */
- icmp6_in = (struct icmp6hdr *)(skb_in->data + mac_header_len + sizeof(struct ipv6hdr));
+ icmp6_in = (struct icmp6hdr *)(skb_in->data + mac_header_len +
+ sizeof(struct ipv6hdr));
if (icmp6_in->icmp6_type == NDISC_ROUTER_SOLICITATION) { /* Check RS */
return -1;
- } else if (icmp6_in->icmp6_type == NDISC_NEIGHBOUR_SOLICITATION) { /* Check NS */
- u8 icmp_na[sizeof(struct icmp6hdr) + sizeof(struct neighbour_advertisement)];
+ } else if (icmp6_in->icmp6_type == NDISC_NEIGHBOUR_SOLICITATION) {
+ /* Check NS */
+ u8 icmp_na[sizeof(struct icmp6hdr) +
+ sizeof(struct neighbour_advertisement)];
u8 zero_addr8[16] = {0,};
if (memcmp(ipv6_in->saddr.in6_u.u6_addr8, zero_addr8, 16) == 0)
@@ -276,7 +283,9 @@ static int gdm_lte_emulate_ndp(struct sk_buff *skb_in, u32 nic_type)
icmp6_out.icmp6_cksum = 0;
icmp6_out.icmp6_dataun.un_data32[0] = htonl(0x60000000); /* R=0, S=1, O=1 */
- ns = (struct neighbour_solicitation *)(skb_in->data + mac_header_len + sizeof(struct ipv6hdr) + sizeof(struct icmp6hdr));
+ ns = (struct neighbour_solicitation *)
+ (skb_in->data + mac_header_len +
+ sizeof(struct ipv6hdr) + sizeof(struct icmp6hdr));
memcpy(&na.target_address, ns->target_address, 16);
na.type = 0x02;
na.length = 1;
@@ -289,13 +298,17 @@ static int gdm_lte_emulate_ndp(struct sk_buff *skb_in, u32 nic_type)
memcpy(&ipv6_out, ipv6_in, sizeof(struct ipv6hdr));
memcpy(ipv6_out.saddr.in6_u.u6_addr8, &na.target_address, 16);
- memcpy(ipv6_out.daddr.in6_u.u6_addr8, ipv6_in->saddr.in6_u.u6_addr8, 16);
- ipv6_out.payload_len = htons(sizeof(struct icmp6hdr) + sizeof(struct neighbour_advertisement));
+ memcpy(ipv6_out.daddr.in6_u.u6_addr8,
+ ipv6_in->saddr.in6_u.u6_addr8, 16);
+ ipv6_out.payload_len = htons(sizeof(struct icmp6hdr) +
+ sizeof(struct neighbour_advertisement));
memcpy(icmp_na, &icmp6_out, sizeof(struct icmp6hdr));
- memcpy(icmp_na + sizeof(struct icmp6hdr), &na, sizeof(struct neighbour_advertisement));
+ memcpy(icmp_na + sizeof(struct icmp6hdr), &na,
+ sizeof(struct neighbour_advertisement));
- icmp6_out.icmp6_cksum = icmp6_checksum(&ipv6_out, (u16 *)icmp_na, sizeof(icmp_na));
+ icmp6_out.icmp6_cksum = icmp6_checksum(&ipv6_out,
+ (u16 *)icmp_na, sizeof(icmp_na));
} else {
return -1;
}
@@ -311,10 +324,14 @@ static int gdm_lte_emulate_ndp(struct sk_buff *skb_in, u32 nic_type)
return -ENOMEM;
skb_reserve(skb_out, NET_IP_ALIGN);
- memcpy(skb_put(skb_out, mac_header_len), mac_header_data, mac_header_len);
- memcpy(skb_put(skb_out, sizeof(struct ipv6hdr)), &ipv6_out, sizeof(struct ipv6hdr));
- memcpy(skb_put(skb_out, sizeof(struct icmp6hdr)), &icmp6_out, sizeof(struct icmp6hdr));
- memcpy(skb_put(skb_out, sizeof(struct neighbour_advertisement)), &na, sizeof(struct neighbour_advertisement));
+ memcpy(skb_put(skb_out, mac_header_len), mac_header_data,
+ mac_header_len);
+ memcpy(skb_put(skb_out, sizeof(struct ipv6hdr)), &ipv6_out,
+ sizeof(struct ipv6hdr));
+ memcpy(skb_put(skb_out, sizeof(struct icmp6hdr)), &icmp6_out,
+ sizeof(struct icmp6hdr));
+ memcpy(skb_put(skb_out, sizeof(struct neighbour_advertisement)), &na,
+ sizeof(struct neighbour_advertisement));
skb_out->protocol = ((struct ethhdr *)mac_header_data)->h_proto;
skb_out->dev = skb_in->dev;
@@ -363,7 +380,8 @@ static s32 gdm_lte_tx_nic_type(struct net_device *dev, struct sk_buff *skb)
/* Check DHCPv4 */
if (ip->protocol == IPPROTO_UDP) {
- struct udphdr *udp = (struct udphdr *)(network_data + sizeof(struct iphdr));
+ struct udphdr *udp = (struct udphdr *)
+ (network_data + sizeof(struct iphdr));
if (ntohs(udp->dest) == 67 || ntohs(udp->dest) == 68)
nic_type |= NIC_TYPE_F_DHCP;
}
@@ -373,12 +391,13 @@ static s32 gdm_lte_tx_nic_type(struct net_device *dev, struct sk_buff *skb)
ipv6 = (struct ipv6hdr *)network_data;
if (ipv6->nexthdr == IPPROTO_ICMPV6) /* Check NDP request */ {
- struct icmp6hdr *icmp6 = (struct icmp6hdr *)(network_data + sizeof(struct ipv6hdr));
- if (/*icmp6->icmp6_type == NDISC_ROUTER_SOLICITATION || */
- icmp6->icmp6_type == NDISC_NEIGHBOUR_SOLICITATION)
+ struct icmp6hdr *icmp6 = (struct icmp6hdr *)
+ (network_data + sizeof(struct ipv6hdr));
+ if (icmp6->icmp6_type == NDISC_NEIGHBOUR_SOLICITATION)
nic_type |= NIC_TYPE_ICMPV6;
} else if (ipv6->nexthdr == IPPROTO_UDP) /* Check DHCPv6 */ {
- struct udphdr *udp = (struct udphdr *)(network_data + sizeof(struct ipv6hdr));
+ struct udphdr *udp = (struct udphdr *)
+ (network_data + sizeof(struct ipv6hdr));
if (ntohs(udp->dest) == 546 || ntohs(udp->dest) == 547)
nic_type |= NIC_TYPE_F_DHCP;
}
@@ -420,11 +439,12 @@ static int gdm_lte_tx(struct sk_buff *skb, struct net_device *dev)
}
/*
- Need byte shift (that is, remove VLAN tag) if there is one
- For the case of ARP, this breaks the offset as vlan_ethhdr+4 is treated as ethhdr
- However, it shouldn't be a problem as the response starts from arp_hdr and ethhdr
- is created by this driver based on the NIC mac
- */
+ * Need byte shift (that is, remove VLAN tag) if there is one
+ * For the case of ARP, this breaks the offset as vlan_ethhdr+4
+ * is treated as ethhdr However, it shouldn't be a problem as
+ * the response starts from arp_hdr and ethhdr is created by this
+ * driver based on the NIC mac
+ */
if (nic_type & NIC_TYPE_F_VLAN) {
struct vlan_ethhdr *vlan_eth = (struct vlan_ethhdr *)skb->data;
nic->vlan_id = ntohs(vlan_eth->h_vlan_TCI) & VLAN_VID_MASK;
@@ -436,15 +456,23 @@ static int gdm_lte_tx(struct sk_buff *skb, struct net_device *dev)
data_len = skb->len;
}
- /* If it is a ICMPV6 packet, clear all the other bits : for backward compatibility with the firmware */
+ /* If it is a ICMPV6 packet, clear all the other bits :
+ * for backward compatibility with the firmware
+ */
if (nic_type & NIC_TYPE_ICMPV6)
nic_type = NIC_TYPE_ICMPV6;
- /* If it is not a dhcp packet, clear all the flag bits : original NIC, otherwise the special flag (IPVX | DHCP) */
+ /* If it is not a dhcp packet, clear all the flag bits :
+ * original NIC, otherwise the special flag (IPVX | DHCP)
+ */
if (!(nic_type & NIC_TYPE_F_DHCP))
nic_type &= NIC_TYPE_MASK;
- sscanf(dev->name, "lte%d", &idx);
+ ret = sscanf(dev->name, "lte%d", &idx);
+ if (ret != 1) {
+ dev_kfree_skb(skb);
+ return -EINVAL;
+ }
ret = nic->phy_dev->send_sdu_func(nic->phy_dev->priv_dev,
data_buf, data_len,
@@ -485,8 +513,11 @@ static int gdm_lte_event_send(struct net_device *dev, char *buf, int len)
struct nic *nic = netdev_priv(dev);
struct hci_packet *hci = (struct hci_packet *)buf;
int idx;
+ int ret;
- sscanf(dev->name, "lte%d", &idx);
+ ret = sscanf(dev->name, "lte%d", &idx);
+ if (ret != 1)
+ return -EINVAL;
return netlink_send(lte_event.sock, idx, 0, buf,
gdm_dev16_to_cpu(
@@ -495,7 +526,8 @@ static int gdm_lte_event_send(struct net_device *dev, char *buf, int len)
+ HCI_HEADER_SIZE);
}
-static void gdm_lte_event_rcv(struct net_device *dev, u16 type, void *msg, int len)
+static void gdm_lte_event_rcv(struct net_device *dev, u16 type,
+ void *msg, int len)
{
struct nic *nic = netdev_priv(dev);
@@ -536,7 +568,8 @@ static u8 find_dev_index(u32 nic_type)
return index;
}
-static void gdm_lte_netif_rx(struct net_device *dev, char *buf, int len, int flagged_nic_type)
+static void gdm_lte_netif_rx(struct net_device *dev, char *buf,
+ int len, int flagged_nic_type)
{
u32 nic_type;
struct nic *nic;
@@ -551,28 +584,46 @@ static void gdm_lte_netif_rx(struct net_device *dev, char *buf, int len, int fla
nic = netdev_priv(dev);
if (flagged_nic_type & NIC_TYPE_F_DHCP) {
- /* Change the destination mac address with the one requested the IP */
+ /* Change the destination mac address
+ * with the one requested the IP
+ */
if (flagged_nic_type & NIC_TYPE_F_IPV4) {
struct dhcp_packet {
u8 op; /* BOOTREQUEST or BOOTREPLY */
- u8 htype; /* hardware address type. 1 = 10mb ethernet */
+ u8 htype; /* hardware address type.
+ * 1 = 10mb ethernet
+ */
u8 hlen; /* hardware address length */
u8 hops; /* used by relay agents only */
u32 xid; /* unique id */
- u16 secs; /* elapsed since client began acquisition/renewal */
+ u16 secs; /* elapsed since client began
+ * acquisition/renewal
+ */
u16 flags; /* only one flag so far: */
- #define BROADCAST_FLAG 0x8000 /* "I need broadcast replies" */
- u32 ciaddr; /* client IP (if client is in BOUND, RENEW or REBINDING state) */
+ #define BROADCAST_FLAG 0x8000
+ /* "I need broadcast replies" */
+ u32 ciaddr; /* client IP (if client is in
+ * BOUND, RENEW or REBINDING state)
+ */
u32 yiaddr; /* 'your' (client) IP address */
- /* IP address of next server to use in bootstrap, returned in DHCPOFFER, DHCPACK by server */
+ /* IP address of next server to use in
+ * bootstrap, returned in DHCPOFFER,
+ * DHCPACK by server
+ */
u32 siaddr_nip;
u32 gateway_nip; /* relay agent IP address */
- u8 chaddr[16]; /* link-layer client hardware address (MAC) */
+ u8 chaddr[16]; /* link-layer client hardware
+ * address (MAC)
+ */
u8 sname[64]; /* server host name (ASCIZ) */
u8 file[128]; /* boot file name (ASCIZ) */
- u32 cookie; /* fixed first four option bytes (99,130,83,99 dec) */
+ u32 cookie; /* fixed first four option
+ * bytes (99,130,83,99 dec)
+ */
} __packed;
- void *addr = buf + sizeof(struct iphdr) + sizeof(struct udphdr) + offsetof(struct dhcp_packet, chaddr);
+ void *addr = buf + sizeof(struct iphdr) +
+ sizeof(struct udphdr) +
+ offsetof(struct dhcp_packet, chaddr);
memcpy(nic->dest_mac_addr, addr, ETH_ALEN);
}
}
@@ -593,7 +644,9 @@ static void gdm_lte_netif_rx(struct net_device *dev, char *buf, int len, int fla
vlan_eth.h_vlan_proto = htons(ETH_P_8021Q);
if (nic_type == NIC_TYPE_ARP) {
- /* Should be response: Only happens because there was a request from the host */
+ /* Should be response: Only happens because
+ * there was a request from the host
+ */
eth.h_proto = htons(ETH_P_ARP);
vlan_eth.h_vlan_encapsulated_proto = htons(ETH_P_ARP);
} else {
@@ -640,15 +693,20 @@ static void gdm_lte_multi_sdu_pkt(struct phy_dev *phy_dev, char *buf, int len)
u32 nic_type;
u8 index;
- hci_len = gdm_dev16_to_cpu(phy_dev->get_endian(phy_dev->priv_dev), multi_sdu->len);
- num_packet = gdm_dev16_to_cpu(phy_dev->get_endian(phy_dev->priv_dev), multi_sdu->num_packet);
+ hci_len = gdm_dev16_to_cpu(phy_dev->get_endian(phy_dev->priv_dev),
+ multi_sdu->len);
+ num_packet = gdm_dev16_to_cpu(phy_dev->get_endian(phy_dev->priv_dev),
+ multi_sdu->num_packet);
for (i = 0; i < num_packet; i++) {
sdu = (struct sdu *)data;
- cmd_evt = gdm_dev16_to_cpu(phy_dev->get_endian(phy_dev->priv_dev), sdu->cmd_evt);
- hci_len = gdm_dev16_to_cpu(phy_dev->get_endian(phy_dev->priv_dev), sdu->len);
- nic_type = gdm_dev32_to_cpu(phy_dev->get_endian(phy_dev->priv_dev), sdu->nic_type);
+ cmd_evt = gdm_dev16_to_cpu(phy_dev->
+ get_endian(phy_dev->priv_dev), sdu->cmd_evt);
+ hci_len = gdm_dev16_to_cpu(phy_dev->
+ get_endian(phy_dev->priv_dev), sdu->len);
+ nic_type = gdm_dev32_to_cpu(phy_dev->
+ get_endian(phy_dev->priv_dev), sdu->nic_type);
if (cmd_evt != LTE_RX_SDU) {
pr_err("rx sdu wrong hci %04x\n", cmd_evt);
@@ -662,7 +720,8 @@ static void gdm_lte_multi_sdu_pkt(struct phy_dev *phy_dev, char *buf, int len)
index = find_dev_index(nic_type);
if (index < MAX_NIC_TYPE) {
dev = phy_dev->dev[index];
- gdm_lte_netif_rx(dev, (char *)sdu->data, (int)(hci_len-12), nic_type);
+ gdm_lte_netif_rx(dev, (char *)sdu->data,
+ (int)(hci_len-12), nic_type);
} else {
pr_err("rx sdu invalid nic_type :%x\n", nic_type);
}
@@ -709,7 +768,8 @@ static int gdm_lte_receive_pkt(struct phy_dev *phy_dev, char *buf, int len)
if (!len)
return ret;
- cmd_evt = gdm_dev16_to_cpu(phy_dev->get_endian(phy_dev->priv_dev), hci->cmd_evt);
+ cmd_evt = gdm_dev16_to_cpu(phy_dev->get_endian(phy_dev->priv_dev),
+ hci->cmd_evt);
dev = phy_dev->dev[0];
if (dev == NULL)
@@ -718,7 +778,8 @@ static int gdm_lte_receive_pkt(struct phy_dev *phy_dev, char *buf, int len)
switch (cmd_evt) {
case LTE_RX_SDU:
sdu = (struct sdu *)hci->data;
- nic_type = gdm_dev32_to_cpu(phy_dev->get_endian(phy_dev->priv_dev), sdu->nic_type);
+ nic_type = gdm_dev32_to_cpu(phy_dev->
+ get_endian(phy_dev->priv_dev), sdu->nic_type);
index = find_dev_index(nic_type);
dev = phy_dev->dev[index];
gdm_lte_netif_rx(dev, hci->data, len, nic_type);
@@ -733,7 +794,9 @@ static int gdm_lte_receive_pkt(struct phy_dev *phy_dev, char *buf, int len)
break;
case LTE_PDN_TABLE_IND:
pdn_table = (struct hci_pdn_table_ind *)buf;
- nic_type = gdm_dev32_to_cpu(phy_dev->get_endian(phy_dev->priv_dev), pdn_table->nic_type);
+ nic_type = gdm_dev32_to_cpu(phy_dev->
+ get_endian(phy_dev->priv_dev),
+ pdn_table->nic_type);
index = find_dev_index(nic_type);
dev = phy_dev->dev[index];
gdm_lte_pdn_table(dev, buf, len);
@@ -758,7 +821,8 @@ void start_rx_proc(struct phy_dev *phy_dev)
int i;
for (i = 0; i < MAX_RX_SUBMIT_COUNT; i++)
- phy_dev->rcv_func(phy_dev->priv_dev, rx_complete, phy_dev, USB_COMPLETE);
+ phy_dev->rcv_func(phy_dev->priv_dev,
+ rx_complete, phy_dev, USB_COMPLETE);
}
static struct net_device_ops gdm_netdev_ops = {
@@ -771,7 +835,8 @@ static struct net_device_ops gdm_netdev_ops = {
static u8 gdm_lte_macaddr[ETH_ALEN] = {0x00, 0x0a, 0x3b, 0x00, 0x00, 0x00};
-static void form_mac_address(u8 *dev_addr, u8 *nic_src, u8 *nic_dest, u8 *mac_address, u8 index)
+static void form_mac_address(u8 *dev_addr, u8 *nic_src, u8 *nic_dest,
+ u8 *mac_address, u8 index)
{
/* Form the dev_addr */
if (!mac_address)
@@ -779,10 +844,14 @@ static void form_mac_address(u8 *dev_addr, u8 *nic_src, u8 *nic_dest, u8 *mac_ad
else
memcpy(dev_addr, mac_address, ETH_ALEN);
- /* The last byte of the mac address should be less than or equal to 0xFC */
+ /* The last byte of the mac address
+ * should be less than or equal to 0xFC
+ */
dev_addr[ETH_ALEN-1] += index;
- /* Create random nic src and copy the first 3 bytes to be the same as dev_addr */
+ /* Create random nic src and copy the first
+ * 3 bytes to be the same as dev_addr
+ */
random_ether_addr(nic_src);
memcpy(nic_src, dev_addr, 3);
@@ -799,7 +868,8 @@ static void validate_mac_address(u8 *mac_address)
}
}
-int register_lte_device(struct phy_dev *phy_dev, struct device *dev, u8 *mac_address)
+int register_lte_device(struct phy_dev *phy_dev,
+ struct device *dev, u8 *mac_address)
{
struct nic *nic;
struct net_device *net;
@@ -814,7 +884,8 @@ int register_lte_device(struct phy_dev *phy_dev, struct device *dev, u8 *mac_add
sprintf(pdn_dev_name, "lte%%dpdn%d", index);
/* Allocate netdev */
- net = alloc_netdev(sizeof(struct nic), pdn_dev_name, ether_setup);
+ net = alloc_netdev(sizeof(struct nic), pdn_dev_name,
+ ether_setup);
if (net == NULL) {
pr_err("alloc_netdev failed\n");
ret = -ENOMEM;
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.