From 2663589ce67e5429bac89544bb0e102bb1fcf617 Mon Sep 17 00:00:00 2001 From: Robert Dolca Date: Thu, 22 Oct 2015 12:11:34 +0300 Subject: [PATCH] NFC: nci: Add function to get max packet size for conn FDP driver needs to send the firmware as regular packets (not fragmented). The driver should have a way to get the max packet size for a given connection. Signed-off-by: Robert Dolca Signed-off-by: Samuel Ortiz --- include/net/nfc/nci_core.h | 1 + net/nfc/nci/data.c | 12 ++++++++++++ 2 files changed, 13 insertions(+) diff --git a/include/net/nfc/nci_core.h b/include/net/nfc/nci_core.h index d0d0f1e53bb9..aaada20bf78e 100644 --- a/include/net/nfc/nci_core.h +++ b/include/net/nfc/nci_core.h @@ -351,6 +351,7 @@ int nci_prop_ntf_packet(struct nci_dev *ndev, __u16 opcode, void nci_rx_data_packet(struct nci_dev *ndev, struct sk_buff *skb); int nci_send_cmd(struct nci_dev *ndev, __u16 opcode, __u8 plen, void *payload); int nci_send_data(struct nci_dev *ndev, __u8 conn_id, struct sk_buff *skb); +int nci_conn_max_data_pkt_payload_size(struct nci_dev *ndev, __u8 conn_id); void nci_data_exchange_complete(struct nci_dev *ndev, struct sk_buff *skb, __u8 conn_id, int err); void nci_hci_data_received_cb(void *context, struct sk_buff *skb, int err); diff --git a/net/nfc/nci/data.c b/net/nfc/nci/data.c index 83acd189c13a..dbd24254412a 100644 --- a/net/nfc/nci/data.c +++ b/net/nfc/nci/data.c @@ -90,6 +90,18 @@ static inline void nci_push_data_hdr(struct nci_dev *ndev, nci_pbf_set((__u8 *)hdr, pbf); } +int nci_conn_max_data_pkt_payload_size(struct nci_dev *ndev, __u8 conn_id) +{ + struct nci_conn_info *conn_info; + + conn_info = nci_get_conn_info_by_conn_id(ndev, conn_id); + if (!conn_info) + return -EPROTO; + + return conn_info->max_pkt_payload_len; +} +EXPORT_SYMBOL(nci_conn_max_data_pkt_payload_size); + static int nci_queue_tx_data_frags(struct nci_dev *ndev, __u8 conn_id, struct sk_buff *skb) { -- 2.39.5