diff options
author | Samuel Ortiz <sameo@linux.intel.com> | 2012-06-01 11:21:13 (GMT) |
---|---|---|
committer | Samuel Ortiz <sameo@linux.intel.com> | 2012-06-04 19:34:30 (GMT) |
commit | fc40a8c1a06ab7db45da790693dd9802612a055c (patch) | |
tree | 7ad170c95ff66bce521bc25a6ddf6946cc1ab0c0 /net | |
parent | ad3823cef650bdc1ca9e7bf1a01b87ad3c0425de (diff) | |
download | linux-fsl-qoriq-fc40a8c1a06ab7db45da790693dd9802612a055c.tar.xz |
NFC: Add target mode activation netlink event
Userspace gets a netlink event upon target mode activation.
The LLCP layer is also signaled when we get an ATR_REQ in order to get
the remote general bytes.
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Diffstat (limited to 'net')
-rw-r--r-- | net/nfc/core.c | 35 | ||||
-rw-r--r-- | net/nfc/netlink.c | 62 | ||||
-rw-r--r-- | net/nfc/nfc.h | 3 |
3 files changed, 100 insertions, 0 deletions
diff --git a/net/nfc/core.c b/net/nfc/core.c index c83717b..17f1474 100644 --- a/net/nfc/core.c +++ b/net/nfc/core.c @@ -455,6 +455,41 @@ u8 *nfc_get_local_general_bytes(struct nfc_dev *dev, size_t *gb_len) } EXPORT_SYMBOL(nfc_get_local_general_bytes); +int nfc_tm_activated(struct nfc_dev *dev, u32 protocol, u8 comm_mode, + u8 *gb, size_t gb_len) +{ + int rc; + + device_lock(&dev->dev); + + dev->polling = false; + + if (gb != NULL) { + rc = nfc_set_remote_general_bytes(dev, gb, gb_len); + if (rc < 0) + goto out; + } + + if (protocol == NFC_PROTO_NFC_DEP_MASK) + nfc_dep_link_is_up(dev, 0, comm_mode, NFC_RF_TARGET); + + rc = nfc_genl_tm_activated(dev, protocol); + +out: + device_unlock(&dev->dev); + + return rc; +} +EXPORT_SYMBOL(nfc_tm_activated); + +int nfc_tm_deactivated(struct nfc_dev *dev) +{ + dev->dep_link_up = false; + + return nfc_genl_tm_deactivated(dev); +} +EXPORT_SYMBOL(nfc_tm_deactivated); + /** * nfc_alloc_send_skb - allocate a skb for data exchange responses * diff --git a/net/nfc/netlink.c b/net/nfc/netlink.c index a18fd56..21eaa9b 100644 --- a/net/nfc/netlink.c +++ b/net/nfc/netlink.c @@ -221,6 +221,68 @@ free_msg: return -EMSGSIZE; } +int nfc_genl_tm_activated(struct nfc_dev *dev, u32 protocol) +{ + struct sk_buff *msg; + void *hdr; + + msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL); + if (!msg) + return -ENOMEM; + + hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0, + NFC_EVENT_TM_ACTIVATED); + if (!hdr) + goto free_msg; + + if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx)) + goto nla_put_failure; + if (nla_put_u32(msg, NFC_ATTR_TM_PROTOCOLS, protocol)) + goto nla_put_failure; + + genlmsg_end(msg, hdr); + + genlmsg_multicast(msg, 0, nfc_genl_event_mcgrp.id, GFP_KERNEL); + + return 0; + +nla_put_failure: + genlmsg_cancel(msg, hdr); +free_msg: + nlmsg_free(msg); + return -EMSGSIZE; +} + +int nfc_genl_tm_deactivated(struct nfc_dev *dev) +{ + struct sk_buff *msg; + void *hdr; + + msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL); + if (!msg) + return -ENOMEM; + + hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0, + NFC_EVENT_TM_DEACTIVATED); + if (!hdr) + goto free_msg; + + if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx)) + goto nla_put_failure; + + genlmsg_end(msg, hdr); + + genlmsg_multicast(msg, 0, nfc_genl_event_mcgrp.id, GFP_KERNEL); + + return 0; + +nla_put_failure: + genlmsg_cancel(msg, hdr); +free_msg: + nlmsg_free(msg); + return -EMSGSIZE; +} + int nfc_genl_device_added(struct nfc_dev *dev) { struct sk_buff *msg; diff --git a/net/nfc/nfc.h b/net/nfc/nfc.h index 7d9708f..cd9fcbe 100644 --- a/net/nfc/nfc.h +++ b/net/nfc/nfc.h @@ -128,6 +128,9 @@ int nfc_genl_dep_link_up_event(struct nfc_dev *dev, u32 target_idx, u8 comm_mode, u8 rf_mode); int nfc_genl_dep_link_down_event(struct nfc_dev *dev); +int nfc_genl_tm_activated(struct nfc_dev *dev, u32 protocol); +int nfc_genl_tm_deactivated(struct nfc_dev *dev); + struct nfc_dev *nfc_get_device(unsigned int idx); static inline void nfc_put_device(struct nfc_dev *dev) |