* Lauro Ramos Venancio <lauro.venancio@openbossa.org>
* Aloisio Almeida Jr <aloisio.almeida@openbossa.org>
*
+ * Vendor commands implementation based on net/wireless/nl80211.c
+ * which is:
+ *
+ * Copyright 2006-2010 Johannes Berg <johannes@sipsolutions.net>
+ * Copyright 2013-2014 Intel Mobile Communications GmbH
+ *
* 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
[NFC_ATTR_FIRMWARE_NAME] = { .type = NLA_STRING,
.len = NFC_FIRMWARE_NAME_MAXSIZE },
[NFC_ATTR_SE_APDU] = { .type = NLA_BINARY },
+ [NFC_ATTR_VENDOR_DATA] = { .type = NLA_BINARY },
+
};
static const struct nla_policy nfc_sdp_genl_policy[NFC_SDP_ATTR_MAX + 1] = {
target_idx = nla_get_u32(info->attrs[NFC_ATTR_TARGET_INDEX]);
protocol = nla_get_u32(info->attrs[NFC_ATTR_PROTOCOLS]);
- nfc_deactivate_target(dev, target_idx);
+ nfc_deactivate_target(dev, target_idx, NFC_TARGET_MODE_SLEEP);
rc = nfc_activate_target(dev, target_idx, protocol);
nfc_put_device(dev);
idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]);
dev = nfc_get_device(idx);
- if (!dev) {
- rc = -ENODEV;
- goto exit;
- }
+ if (!dev)
+ return -ENODEV;
device_lock(&dev->dev);
return nfc_se_io(dev, se_idx, apdu, apdu_len, se_io_cb, ctx);
}
+static int nfc_genl_vendor_cmd(struct sk_buff *skb,
+ struct genl_info *info)
+{
+ struct nfc_dev *dev;
+ struct nfc_vendor_cmd *cmd;
+ u32 dev_idx, vid, subcmd;
+ u8 *data;
+ size_t data_len;
+ int i, err;
+
+ if (!info->attrs[NFC_ATTR_DEVICE_INDEX] ||
+ !info->attrs[NFC_ATTR_VENDOR_ID] ||
+ !info->attrs[NFC_ATTR_VENDOR_SUBCMD])
+ return -EINVAL;
+
+ dev_idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]);
+ vid = nla_get_u32(info->attrs[NFC_ATTR_VENDOR_ID]);
+ subcmd = nla_get_u32(info->attrs[NFC_ATTR_VENDOR_SUBCMD]);
+
+ dev = nfc_get_device(dev_idx);
+ if (!dev || !dev->vendor_cmds || !dev->n_vendor_cmds)
+ return -ENODEV;
+
+ if (info->attrs[NFC_ATTR_VENDOR_DATA]) {
+ data = nla_data(info->attrs[NFC_ATTR_VENDOR_DATA]);
+ data_len = nla_len(info->attrs[NFC_ATTR_VENDOR_DATA]);
+ if (data_len == 0)
+ return -EINVAL;
+ } else {
+ data = NULL;
+ data_len = 0;
+ }
+
+ for (i = 0; i < dev->n_vendor_cmds; i++) {
+ cmd = &dev->vendor_cmds[i];
+
+ if (cmd->vendor_id != vid || cmd->subcmd != subcmd)
+ continue;
+
+ dev->cur_cmd_info = info;
+ err = cmd->doit(dev, data, data_len);
+ dev->cur_cmd_info = NULL;
+ return err;
+ }
+
+ return -EOPNOTSUPP;
+}
+
+/* message building helper */
+static inline void *nfc_hdr_put(struct sk_buff *skb, u32 portid, u32 seq,
+ int flags, u8 cmd)
+{
+ /* since there is no private header just add the generic one */
+ return genlmsg_put(skb, portid, seq, &nfc_genl_family, flags, cmd);
+}
+
+static struct sk_buff *
+__nfc_alloc_vendor_cmd_skb(struct nfc_dev *dev, int approxlen,
+ u32 portid, u32 seq,
+ enum nfc_attrs attr,
+ u32 oui, u32 subcmd, gfp_t gfp)
+{
+ struct sk_buff *skb;
+ void *hdr;
+
+ skb = nlmsg_new(approxlen + 100, gfp);
+ if (!skb)
+ return NULL;
+
+ hdr = nfc_hdr_put(skb, portid, seq, 0, NFC_CMD_VENDOR);
+ if (!hdr) {
+ kfree_skb(skb);
+ return NULL;
+ }
+
+ if (nla_put_u32(skb, NFC_ATTR_DEVICE_INDEX, dev->idx))
+ goto nla_put_failure;
+ if (nla_put_u32(skb, NFC_ATTR_VENDOR_ID, oui))
+ goto nla_put_failure;
+ if (nla_put_u32(skb, NFC_ATTR_VENDOR_SUBCMD, subcmd))
+ goto nla_put_failure;
+
+ ((void **)skb->cb)[0] = dev;
+ ((void **)skb->cb)[1] = hdr;
+
+ return skb;
+
+nla_put_failure:
+ kfree_skb(skb);
+ return NULL;
+}
+
+struct sk_buff *__nfc_alloc_vendor_cmd_reply_skb(struct nfc_dev *dev,
+ enum nfc_attrs attr,
+ u32 oui, u32 subcmd,
+ int approxlen)
+{
+ if (WARN_ON(!dev->cur_cmd_info))
+ return NULL;
+
+ return __nfc_alloc_vendor_cmd_skb(dev, approxlen,
+ dev->cur_cmd_info->snd_portid,
+ dev->cur_cmd_info->snd_seq, attr,
+ oui, subcmd, GFP_KERNEL);
+}
+EXPORT_SYMBOL(__nfc_alloc_vendor_cmd_reply_skb);
+
+int nfc_vendor_cmd_reply(struct sk_buff *skb)
+{
+ struct nfc_dev *dev = ((void **)skb->cb)[0];
+ void *hdr = ((void **)skb->cb)[1];
+
+ /* clear CB data for netlink core to own from now on */
+ memset(skb->cb, 0, sizeof(skb->cb));
+
+ if (WARN_ON(!dev->cur_cmd_info)) {
+ kfree_skb(skb);
+ return -EINVAL;
+ }
+
+ genlmsg_end(skb, hdr);
+ return genlmsg_reply(skb, dev->cur_cmd_info);
+}
+EXPORT_SYMBOL(nfc_vendor_cmd_reply);
+
static const struct genl_ops nfc_genl_ops[] = {
{
.cmd = NFC_CMD_GET_DEVICE,
.doit = nfc_genl_activate_target,
.policy = nfc_genl_policy,
},
+ {
+ .cmd = NFC_CMD_VENDOR,
+ .doit = nfc_genl_vendor_cmd,
+ .policy = nfc_genl_policy,
+ },
};
Code Review / kvmfornfv.git / blobdiff