Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next

Pull networking updates from David Miller:
 "Highlights:

   1) Steady transitioning of the BPF instructure to a generic spot so
      all kernel subsystems can make use of it, from Alexei Starovoitov.

   2) SFC driver supports busy polling, from Alexandre Rames.

   3) Take advantage of hash table in UDP multicast delivery, from David
      Held.

   4) Lighten locking, in particular by getting rid of the LRU lists, in
      inet frag handling.  From Florian Westphal.

   5) Add support for various RFC6458 control messages in SCTP, from
      Geir Ola Vaagland.

   6) Allow to filter bridge forwarding database dumps by device, from
      Jamal Hadi Salim.

   7) virtio-net also now supports busy polling, from Jason Wang.

   8) Some low level optimization tweaks in pktgen from Jesper Dangaard
      Brouer.

   9) Add support for ipv6 address generation modes, so that userland
      can have some input into the process.  From Jiri Pirko.

  10) Consolidate common TCP connection request code in ipv4 and ipv6,
      from Octavian Purdila.

  11) New ARP packet logger in netfilter, from Pablo Neira Ayuso.

  12) Generic resizable RCU hash table, with intial users in netlink and
      nftables.  From Thomas Graf.

  13) Maintain a name assignment type so that userspace can see where a
      network device name came from (enumerated by kernel, assigned
      explicitly by userspace, etc.) From Tom Gundersen.

  14) Automatic flow label generation on transmit in ipv6, from Tom
      Herbert.

  15) New packet timestamping facilities from Willem de Bruijn, meant to
      assist in measuring latencies going into/out-of the packet
      scheduler, latency from TCP data transmission to ACK, etc"

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1536 commits)
  cxgb4 : Disable recursive mailbox commands when enabling vi
  net: reduce USB network driver config options.
  tg3: Modify tg3_tso_bug() to handle multiple TX rings
  amd-xgbe: Perform phy connect/disconnect at dev open/stop
  amd-xgbe: Use dma_set_mask_and_coherent to set DMA mask
  net: sun4i-emac: fix memory leak on bad packet
  sctp: fix possible seqlock seadlock in sctp_packet_transmit()
  Revert "net: phy: Set the driver when registering an MDIO bus device"
  cxgb4vf: Turn off SGE RX/TX Callback Timers and interrupts in PCI shutdown routine
  team: Simplify return path of team_newlink
  bridge: Update outdated comment on promiscuous mode
  net-timestamp: ACK timestamp for bytestreams
  net-timestamp: TCP timestamping
  net-timestamp: SCHED timestamp on entering packet scheduler
  net-timestamp: add key to disambiguate concurrent datagrams
  net-timestamp: move timestamp flags out of sk_flags
  net-timestamp: extend SCM_TIMESTAMPING ancillary data struct
  cxgb4i : Move stray CPL definitions to cxgb4 driver
  tcp: reduce spurious retransmits due to transient SACK reneging
  qlcnic: Initialize dcbnl_ops before register_netdev
  ...

1 files changed, 271 insertions, 1 deletions

diff --git a/drivers/nfc/st21nfca/st21nfca.c b/drivers/nfc/st21nfca/st21nfca.c
index 51e0f00b3a4f..a902b0551c86 100644
--- a/drivers/nfc/st21nfca/st21nfca.c
+++ b/drivers/nfc/st21nfca/st21nfca.c
@@ -22,6 +22,7 @@
 #include <net/nfc/llc.h>
 
 #include "st21nfca.h"
+#include "st21nfca_dep.h"
 
 #define DRIVER_DESC "HCI NFC driver for ST21NFCA"
 
@@ -53,6 +54,7 @@
 #define ST21NFCA_DM_PIPE_CREATED        0x02
 #define ST21NFCA_DM_PIPE_OPEN           0x04
 #define ST21NFCA_DM_RF_ACTIVE           0x80
+#define ST21NFCA_DM_DISCONNECT		0x30
 
 #define ST21NFCA_DM_IS_PIPE_OPEN(p) \
 	((p & 0x0f) == (ST21NFCA_DM_PIPE_CREATED | ST21NFCA_DM_PIPE_OPEN))
@@ -72,6 +74,7 @@ static struct nfc_hci_gate st21nfca_gates[] = {
 	{ST21NFCA_RF_READER_F_GATE, NFC_HCI_INVALID_PIPE},
 	{ST21NFCA_RF_READER_14443_3_A_GATE, NFC_HCI_INVALID_PIPE},
 	{ST21NFCA_RF_READER_ISO15693_GATE, NFC_HCI_INVALID_PIPE},
+	{ST21NFCA_RF_CARD_F_GATE, NFC_HCI_INVALID_PIPE},
 };
 
 struct st21nfca_pipe_info {
@@ -299,6 +302,9 @@ static int st21nfca_hci_start_poll(struct nfc_hci_dev *hdev,
 				   u32 im_protocols, u32 tm_protocols)
 {
 	int r;
+	u32 pol_req;
+	u8 param[19];
+	struct sk_buff *datarate_skb;
 
 	pr_info(DRIVER_DESC ": %s protocols 0x%x 0x%x\n",
 		__func__, im_protocols, tm_protocols);
@@ -331,6 +337,31 @@ static int st21nfca_hci_start_poll(struct nfc_hci_dev *hdev,
 					ST21NFCA_RF_READER_F_GATE);
 			if (r < 0)
 				return r;
+		} else {
+			hdev->gb = nfc_get_local_general_bytes(hdev->ndev,
+							       &hdev->gb_len);
+
+			if (hdev->gb == NULL || hdev->gb_len == 0) {
+				im_protocols &= ~NFC_PROTO_NFC_DEP_MASK;
+				tm_protocols &= ~NFC_PROTO_NFC_DEP_MASK;
+			}
+
+			param[0] = ST21NFCA_RF_READER_F_DATARATE_106 |
+			    ST21NFCA_RF_READER_F_DATARATE_212 |
+			    ST21NFCA_RF_READER_F_DATARATE_424;
+			r = nfc_hci_set_param(hdev, ST21NFCA_RF_READER_F_GATE,
+					      ST21NFCA_RF_READER_F_DATARATE,
+					      param, 1);
+			if (r < 0)
+				return r;
+
+			pol_req =
+			    be32_to_cpu(ST21NFCA_RF_READER_F_POL_REQ_DEFAULT);
+			r = nfc_hci_set_param(hdev, ST21NFCA_RF_READER_F_GATE,
+					      ST21NFCA_RF_READER_F_POL_REQ,
+					      (u8 *) &pol_req, 4);
+			if (r < 0)
+				return r;
 		}
 
 		if ((ST21NFCA_RF_READER_14443_3_A_GATE & im_protocols) == 0) {
@@ -353,9 +384,104 @@ static int st21nfca_hci_start_poll(struct nfc_hci_dev *hdev,
 			nfc_hci_send_event(hdev, NFC_HCI_RF_READER_A_GATE,
 					   NFC_HCI_EVT_END_OPERATION, NULL, 0);
 	}
+
+	if (tm_protocols & NFC_PROTO_NFC_DEP_MASK) {
+		r = nfc_hci_get_param(hdev, ST21NFCA_RF_CARD_F_GATE,
+				      ST21NFCA_RF_CARD_F_DATARATE,
+				      &datarate_skb);
+		if (r < 0)
+			return r;
+
+		/* Configure the maximum supported datarate to 424Kbps */
+		if (datarate_skb->len > 0 &&
+		    datarate_skb->data[0] !=
+		    ST21NFCA_RF_CARD_F_DATARATE_212_424) {
+			param[0] = ST21NFCA_RF_CARD_F_DATARATE_212_424;
+			r = nfc_hci_set_param(hdev, ST21NFCA_RF_CARD_F_GATE,
+					      ST21NFCA_RF_CARD_F_DATARATE,
+					      param, 1);
+			if (r < 0)
+				return r;
+		}
+
+		/*
+		 * Configure sens_res
+		 *
+		 * NFC Forum Digital Spec Table 7:
+		 * NFCID1 size: triple (10 bytes)
+		 */
+		param[0] = 0x00;
+		param[1] = 0x08;
+		r = nfc_hci_set_param(hdev, ST21NFCA_RF_CARD_F_GATE,
+				      ST21NFCA_RF_CARD_F_SENS_RES, param, 2);
+		if (r < 0)
+			return r;
+
+		/*
+		 * Configure sel_res
+		 *
+		 * NFC Forum Digistal Spec Table 17:
+		 * b3 set to 0b (value b7-b6):
+		 * - 10b: Configured for NFC-DEP Protocol
+		 */
+		param[0] = 0x40;
+		r = nfc_hci_set_param(hdev, ST21NFCA_RF_CARD_F_GATE,
+				      ST21NFCA_RF_CARD_F_SEL_RES, param, 1);
+		if (r < 0)
+			return r;
+
+		/* Configure NFCID1 Random uid */
+		r = nfc_hci_set_param(hdev, ST21NFCA_RF_CARD_F_GATE,
+				      ST21NFCA_RF_CARD_F_NFCID1, NULL, 0);
+		if (r < 0)
+			return r;
+
+		/* Configure NFCID2_LIST */
+		/* System Code */
+		param[0] = 0x00;
+		param[1] = 0x00;
+		/* NFCID2 */
+		param[2] = 0x01;
+		param[3] = 0xfe;
+		param[4] = 'S';
+		param[5] = 'T';
+		param[6] = 'M';
+		param[7] = 'i';
+		param[8] = 'c';
+		param[9] = 'r';
+		/* 8 byte Pad bytes used for polling respone frame */
+
+		/*
+		 * Configuration byte:
+		 * - bit 0: define the default NFCID2 entry used when the
+		 * system code is equal to 'FFFF'
+		 * - bit 1: use a random value for lowest 6 bytes of
+		 * NFCID2 value
+		 * - bit 2: ignore polling request frame if request code
+		 * is equal to '01'
+		 * - Other bits are RFU
+		 */
+		param[18] = 0x01;
+		r = nfc_hci_set_param(hdev, ST21NFCA_RF_CARD_F_GATE,
+				      ST21NFCA_RF_CARD_F_NFCID2_LIST, param,
+				      19);
+		if (r < 0)
+			return r;
+
+		param[0] = 0x02;
+		r = nfc_hci_set_param(hdev, ST21NFCA_RF_CARD_F_GATE,
+				      ST21NFCA_RF_CARD_F_MODE, param, 1);
+	}
+
 	return r;
 }
 
+static void st21nfca_hci_stop_poll(struct nfc_hci_dev *hdev)
+{
+	nfc_hci_send_cmd(hdev, ST21NFCA_DEVICE_MGNT_GATE,
+			ST21NFCA_DM_DISCONNECT, NULL, 0, NULL);
+}
+
 static int st21nfca_get_iso14443_3_atqa(struct nfc_hci_dev *hdev, u16 *atqa)
 {
 	int r;
@@ -451,6 +577,26 @@ exit:
 	return r;
 }
 
+static int st21nfca_hci_dep_link_up(struct nfc_hci_dev *hdev,
+				    struct nfc_target *target, u8 comm_mode,
+				    u8 *gb, size_t gb_len)
+{
+	struct st21nfca_hci_info *info = nfc_hci_get_clientdata(hdev);
+
+	info->dep_info.idx = target->idx;
+	return st21nfca_im_send_atr_req(hdev, gb, gb_len);
+}
+
+static int st21nfca_hci_dep_link_down(struct nfc_hci_dev *hdev)
+{
+	struct st21nfca_hci_info *info = nfc_hci_get_clientdata(hdev);
+
+	info->state = ST21NFCA_ST_READY;
+
+	return nfc_hci_send_cmd(hdev, ST21NFCA_DEVICE_MGNT_GATE,
+				ST21NFCA_DM_DISCONNECT, NULL, 0, NULL);
+}
+
 static int st21nfca_hci_target_from_gate(struct nfc_hci_dev *hdev, u8 gate,
 					 struct nfc_target *target)
 {
@@ -505,6 +651,69 @@ static int st21nfca_hci_target_from_gate(struct nfc_hci_dev *hdev, u8 gate,
 	return 0;
 }
 
+static int st21nfca_hci_complete_target_discovered(struct nfc_hci_dev *hdev,
+						u8 gate,
+						struct nfc_target *target)
+{
+	int r;
+	struct sk_buff *nfcid2_skb = NULL, *nfcid1_skb;
+
+	if (gate == ST21NFCA_RF_READER_F_GATE) {
+		r = nfc_hci_get_param(hdev, ST21NFCA_RF_READER_F_GATE,
+				ST21NFCA_RF_READER_F_NFCID2, &nfcid2_skb);
+		if (r < 0)
+			goto exit;
+
+		if (nfcid2_skb->len > NFC_SENSF_RES_MAXSIZE) {
+			r = -EPROTO;
+			goto exit;
+		}
+
+		/*
+		 * - After the recepton of polling response for type F frame
+		 * at 212 or 424 Kbit/s, NFCID2 registry parameters will be
+		 * updated.
+		 * - After the reception of SEL_RES with NFCIP-1 compliant bit
+		 * set for type A frame NFCID1 will be updated
+		 */
+		if (nfcid2_skb->len > 0) {
+			/* P2P in type F */
+			memcpy(target->sensf_res, nfcid2_skb->data,
+				nfcid2_skb->len);
+			target->sensf_res_len = nfcid2_skb->len;
+			/* NFC Forum Digital Protocol Table 44 */
+			if (target->sensf_res[0] == 0x01 &&
+			    target->sensf_res[1] == 0xfe)
+				target->supported_protocols =
+							NFC_PROTO_NFC_DEP_MASK;
+			else
+				target->supported_protocols =
+							NFC_PROTO_FELICA_MASK;
+		} else {
+			/* P2P in type A */
+			r = nfc_hci_get_param(hdev, ST21NFCA_RF_READER_F_GATE,
+					ST21NFCA_RF_READER_F_NFCID1,
+					&nfcid1_skb);
+			if (r < 0)
+				goto exit;
+
+			if (nfcid1_skb->len > NFC_NFCID1_MAXSIZE) {
+				r = -EPROTO;
+				goto exit;
+			}
+			memcpy(target->sensf_res, nfcid1_skb->data,
+				nfcid1_skb->len);
+			target->sensf_res_len = nfcid1_skb->len;
+			target->supported_protocols = NFC_PROTO_NFC_DEP_MASK;
+		}
+		target->hci_reader_gate = ST21NFCA_RF_READER_F_GATE;
+	}
+	r = 1;
+exit:
+	kfree_skb(nfcid2_skb);
+	return r;
+}
+
 #define ST21NFCA_CB_TYPE_READER_ISO15693 1
 static void st21nfca_hci_data_exchange_cb(void *context, struct sk_buff *skb,
 					  int err)
@@ -541,6 +750,9 @@ static int st21nfca_hci_im_transceive(struct nfc_hci_dev *hdev,
 
 	switch (target->hci_reader_gate) {
 	case ST21NFCA_RF_READER_F_GATE:
+		if (target->supported_protocols == NFC_PROTO_NFC_DEP_MASK)
+			return st21nfca_im_send_dep_req(hdev, skb);
+
 		*skb_push(skb, 1) = 0x1a;
 		return nfc_hci_send_cmd_async(hdev, target->hci_reader_gate,
 					      ST21NFCA_WR_XCHG_DATA, skb->data,
@@ -569,6 +781,11 @@ static int st21nfca_hci_im_transceive(struct nfc_hci_dev *hdev,
 	}
 }
 
+static int st21nfca_hci_tm_send(struct nfc_hci_dev *hdev, struct sk_buff *skb)
+{
+	return st21nfca_tm_send_dep_res(hdev, skb);
+}
+
 static int st21nfca_hci_check_presence(struct nfc_hci_dev *hdev,
 				       struct nfc_target *target)
 {
@@ -594,6 +811,50 @@ static int st21nfca_hci_check_presence(struct nfc_hci_dev *hdev,
 	}
 }
 
+/*
+ * Returns:
+ * <= 0: driver handled the event, skb consumed
+ *    1: driver does not handle the event, please do standard processing
+ */
+static int st21nfca_hci_event_received(struct nfc_hci_dev *hdev, u8 gate,
+				       u8 event, struct sk_buff *skb)
+{
+	int r;
+	struct st21nfca_hci_info *info = nfc_hci_get_clientdata(hdev);
+
+	pr_debug("hci event: %d\n", event);
+
+	switch (event) {
+	case ST21NFCA_EVT_CARD_ACTIVATED:
+		if (gate == ST21NFCA_RF_CARD_F_GATE)
+			info->dep_info.curr_nfc_dep_pni = 0;
+		break;
+	case ST21NFCA_EVT_CARD_DEACTIVATED:
+		break;
+	case ST21NFCA_EVT_FIELD_ON:
+		break;
+	case ST21NFCA_EVT_FIELD_OFF:
+		break;
+	case ST21NFCA_EVT_SEND_DATA:
+		if (gate == ST21NFCA_RF_CARD_F_GATE) {
+			r = st21nfca_tm_event_send_data(hdev, skb, gate);
+			if (r < 0)
+				goto exit;
+			return 0;
+		} else {
+			info->dep_info.curr_nfc_dep_pni = 0;
+			return 1;
+		}
+		break;
+	default:
+		return 1;
+	}
+	kfree_skb(skb);
+	return 0;
+exit:
+	return r;
+}
+
 static struct nfc_hci_ops st21nfca_hci_ops = {
 	.open = st21nfca_hci_open,
 	.close = st21nfca_hci_close,
@@ -601,9 +862,15 @@ static struct nfc_hci_ops st21nfca_hci_ops = {
 	.hci_ready = st21nfca_hci_ready,
 	.xmit = st21nfca_hci_xmit,
 	.start_poll = st21nfca_hci_start_poll,
+	.stop_poll = st21nfca_hci_stop_poll,
+	.dep_link_up = st21nfca_hci_dep_link_up,
+	.dep_link_down = st21nfca_hci_dep_link_down,
 	.target_from_gate = st21nfca_hci_target_from_gate,
+	.complete_target_discovered = st21nfca_hci_complete_target_discovered,
 	.im_transceive = st21nfca_hci_im_transceive,
+	.tm_send = st21nfca_hci_tm_send,
 	.check_presence = st21nfca_hci_check_presence,
+	.event_received = st21nfca_hci_event_received,
 };
 
 int st21nfca_hci_probe(void *phy_id, struct nfc_phy_ops *phy_ops,
@@ -648,7 +915,8 @@ int st21nfca_hci_probe(void *phy_id, struct nfc_phy_ops *phy_ops,
 	    NFC_PROTO_FELICA_MASK |
 	    NFC_PROTO_ISO14443_MASK |
 	    NFC_PROTO_ISO14443_B_MASK |
-	    NFC_PROTO_ISO15693_MASK;
+	    NFC_PROTO_ISO15693_MASK |
+	    NFC_PROTO_NFC_DEP_MASK;
 
 	set_bit(NFC_HCI_QUIRK_SHORT_CLEAR, &quirks);
 
@@ -671,6 +939,7 @@ int st21nfca_hci_probe(void *phy_id, struct nfc_phy_ops *phy_ops,
 		goto err_regdev;
 
 	*hdev = info->hdev;
+	st21nfca_dep_init(info->hdev);
 
 	return 0;
 
@@ -688,6 +957,7 @@ void st21nfca_hci_remove(struct nfc_hci_dev *hdev)
 {
 	struct st21nfca_hci_info *info = nfc_hci_get_clientdata(hdev);
 
+	st21nfca_dep_deinit(hdev);
 	nfc_hci_unregister_device(hdev);
 	nfc_hci_free_device(hdev);
 	kfree(info);