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

Pull networking changes from David Miller:

 1) Get rid of the error prone NLA_PUT*() macros that used an embedded
    goto.

 2) Kill off the token-ring and MCA networking drivers, from Paul
    Gortmaker.

 3) Reduce high-order allocations made by datagram AF_UNIX sockets, from
    Eric Dumazet.

 4) Add PTP hardware clock support to IGB and IXGBE, from Richard
    Cochran and Jacob Keller.

 5) Allow users to query timestamping capabilities of a card via
    ethtool, from Richard Cochran.

 6) Add loadbalance mode to the teaming driver, from Jiri Pirko.  Part
    of this is that we can now have BPF filters not attached to sockets,
    and the loadbalancing function is calculated using one.

 7) Francois Romieu went through the network drivers removing gratuitous
    uses of netdev->base_addr, perhaps some day we can remove it
    completely but it's used for ISA probing still.

 8) Add a BPF JIT for sparc.  I know, who cares, right? :-)

 9) Move networking sysctl registry away from using the compatability
    mode interfaces in the sysctl code.  From Eric W Biederman.

10) Pavel Emelyanov added a way to save and restore TCP socket state via
    TCP_REPAIR, TCP_REPAIR_QUEUE, and TCP_QUEUE_SEQ socket options as
    well as a way to forcefully bind a socket to a port via the
    sk->sk_reuse value SK_FORCE_REUSE.  There is also a
    TCP_REPAIR_OPTIONS which allows to reinstante the TCP options
    enabled on the connection.

11) Several enhancements from Eric Dumazet that, in particular, can
    enhance splice performance on TCP sockets significantly.

     a) Reset the offset of the per-socket sendmsg page when we know
        we're the only use of the page in linear_to_page().

     b) Add facilities such that skb->data can be backed a page rather
        than SLAB kmalloc'd memory.  In particular devices which were
        receiving into linear RX buffers can now end up providing paged
        data.

    The big result is that code like splice and GRO do not have to copy
    any more.

12) Allow a pure sender to more gracefully handle ACK backlogs in TCP.
    What can happen at high rates is that the sender hasn't grown his
    receive buffer limits at all (he's not receiving data so really
    doesn't need to), but the non-data ACKs consume receive buffer
    space.

    sk_add_backlog() is too aggressive in dropping frames in this case,
    so relax it's requirements by using the receive buffer plus the send
    buffer limit as the backlog limit instead of just the former.

    Also from Eric Dumazet.

13) Add ipv6 support to L2TP, from Benjamin LaHaise, James Chapman, and
    Chris Elston.

14) Implement TCP early retransmit (RFC 5827), from Yuchung Cheng.
    Basically, we can start fast retransmit before hiting the dupack
    threshold under certain conditions.

15) New CODEL active queue management packet scheduler, from Eric
    Dumazet based upon initial work by Dave Taht.

    Basically, the big feature is that packets are dropped (or ECN bits
    are set) based upon how long packets live in the queue, rather than
    the queue length (which is what RED uses).

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1341 commits)
  drivers/net/stmmac: seq_file fix memory leak
  ipv6/exthdrs: strict Pad1 and PadN check
  USB: qmi_wwan: Add ZTE (Vodafone) K3520-Z
  USB: qmi_wwan: Add ZTE (Vodafone) K3765-Z
  USB: qmi_wwan: Make forced int 4 whitelist generic
  net/ipv4: replace simple_strtoul with kstrtoul
  net/ipv4/ipconfig: neaten __setup placement
  net: qmi_wwan: Add Vodafone/Huawei K5005 support
  net: cdc_ether: Add ZTE WWAN matches before generic Ethernet
  ipv6: use skb coalescing in reassembly
  ipv4: use skb coalescing in defragmentation
  net: introduce skb_try_coalesce()
  net:ipv6:fixed space issues relating to operators.
  net:ipv6:fixed a trailing white space issue.
  ipv6: disable GSO on sockets hitting dst_allfrag
  tg3: use netdev_alloc_frag() API
  net: napi_frags_skb() is static
  ppp: avoid false drop_monitor false positives
  ipv6: bool/const conversions phase2
  ipx: Remove spurious NULL checking in ipx_ioctl().
  ...

1 files changed, 73 insertions, 90 deletions

diff --git a/drivers/net/wireless/iwlwifi/iwl-trans.h b/drivers/net/wireless/iwlwifi/iwl-trans.h
index fdf97886a5e4..79a1e7ae4995 100644
--- a/drivers/net/wireless/iwlwifi/iwl-trans.h
+++ b/drivers/net/wireless/iwlwifi/iwl-trans.h
@@ -66,8 +66,9 @@
 #include <linux/ieee80211.h>
 #include <linux/mm.h> /* for page_address */
 
-#include "iwl-shared.h"
 #include "iwl-debug.h"
+#include "iwl-config.h"
+#include "iwl-fw.h"
 
 /**
  * DOC: Transport layer - what is it ?
@@ -104,13 +105,6 @@
  *	6) Eventually, the free function will be called.
  */
 
-struct iwl_priv;
-struct iwl_shared;
-struct iwl_op_mode;
-struct fw_img;
-struct sk_buff;
-struct dentry;
-
 /**
  * DOC: Host command section
  *
@@ -162,6 +156,8 @@ struct iwl_cmd_header {
 
 
 #define FH_RSCSR_FRAME_SIZE_MSK		0x00003FFF	/* bits 0-13 */
+#define FH_RSCSR_FRAME_INVALID		0x55550000
+#define FH_RSCSR_FRAME_ALIGN		0x40
 
 struct iwl_rx_packet {
 	/*
@@ -260,28 +256,43 @@ static inline void iwl_free_resp(struct iwl_host_cmd *cmd)
 
 struct iwl_rx_cmd_buffer {
 	struct page *_page;
+	int _offset;
+	bool _page_stolen;
 	unsigned int truesize;
 };
 
 static inline void *rxb_addr(struct iwl_rx_cmd_buffer *r)
 {
-	return page_address(r->_page);
+	return (void *)((unsigned long)page_address(r->_page) + r->_offset);
+}
+
+static inline int rxb_offset(struct iwl_rx_cmd_buffer *r)
+{
+	return r->_offset;
 }
 
 static inline struct page *rxb_steal_page(struct iwl_rx_cmd_buffer *r)
 {
-	struct page *p = r->_page;
-	r->_page = NULL;
-	return p;
+	r->_page_stolen = true;
+	get_page(r->_page);
+	return r->_page;
 }
 
 #define MAX_NO_RECLAIM_CMDS	6
 
+/*
+ * Maximum number of HW queues the transport layer
+ * currently supports
+ */
+#define IWL_MAX_HW_QUEUES		32
+
 /**
  * struct iwl_trans_config - transport configuration
  *
  * @op_mode: pointer to the upper layer.
- *	Must be set before any other call.
+ * @queue_to_fifo: queue to FIFO mapping to set up by
+ *	default
+ * @n_queue_to_fifo: number of queues to set up
  * @cmd_queue: the index of the command queue.
  *	Must be set before start_fw.
  * @no_reclaim_cmds: Some devices erroneously don't set the
@@ -289,14 +300,29 @@ static inline struct page *rxb_steal_page(struct iwl_rx_cmd_buffer *r)
  *	list of such notifications to filter. Max length is
  *	%MAX_NO_RECLAIM_CMDS.
  * @n_no_reclaim_cmds: # of commands in list
+ * @rx_buf_size_8k: 8 kB RX buffer size needed for A-MSDUs,
+ *	if unset 4k will be the RX buffer size
+ * @queue_watchdog_timeout: time (in ms) after which queues
+ *	are considered stuck and will trigger device restart
+ * @command_names: array of command names, must be 256 entries
+ *	(one for each command); for debugging only
  */
 struct iwl_trans_config {
 	struct iwl_op_mode *op_mode;
+	const u8 *queue_to_fifo;
+	u8 n_queue_to_fifo;
+
 	u8 cmd_queue;
 	const u8 *no_reclaim_cmds;
 	int n_no_reclaim_cmds;
+
+	bool rx_buf_size_8k;
+	unsigned int queue_watchdog_timeout;
+	const char **command_names;
 };
 
+struct iwl_trans;
+
 /**
  * struct iwl_trans_ops - transport specific operations
  *
@@ -305,7 +331,8 @@ struct iwl_trans_config {
  * @start_hw: starts the HW- from that point on, the HW can send interrupts
  *	May sleep
  * @stop_hw: stops the HW- from that point on, the HW will be in low power but
- *	will still issue interrupt if the HW RF kill is triggered.
+ *	will still issue interrupt if the HW RF kill is triggered unless
+ *	op_mode_leaving is true.
  *	May sleep
  * @start_fw: allocates and inits all the resources for the transport
  *	layer. Also kick a fw image.
@@ -323,18 +350,11 @@ struct iwl_trans_config {
  *	Must be atomic
  * @reclaim: free packet until ssn. Returns a list of freed packets.
  *	Must be atomic
- * @tx_agg_alloc: allocate resources for a TX BA session
- *	Must be atomic
  * @tx_agg_setup: setup a tx queue for AMPDU - will be called once the HW is
  *	ready and a successful ADDBA response has been received.
  *	May sleep
  * @tx_agg_disable: de-configure a Tx queue to send AMPDUs
  *	Must be atomic
- * @free: release all the ressource for the transport layer itself such as
- *	irq, tasklet etc... From this point on, the device may not issue
- *	any interrupt (incl. RFKILL).
- *	May sleep
- * @check_stuck_queue: check if a specific queue is stuck
  * @wait_tx_queue_empty: wait until all tx queues are empty
  *	May sleep
  * @dbgfs_register: add the dbgfs files under this directory. Files will be
@@ -347,11 +367,12 @@ struct iwl_trans_config {
  * @configure: configure parameters required by the transport layer from
  *	the op_mode. May be called several times before start_fw, can't be
  *	called after that.
+ * @set_pmi: set the power pmi state
  */
 struct iwl_trans_ops {
 
 	int (*start_hw)(struct iwl_trans *iwl_trans);
-	void (*stop_hw)(struct iwl_trans *iwl_trans);
+	void (*stop_hw)(struct iwl_trans *iwl_trans, bool op_mode_leaving);
 	int (*start_fw)(struct iwl_trans *trans, const struct fw_img *fw);
 	void (*fw_alive)(struct iwl_trans *trans);
 	void (*stop_device)(struct iwl_trans *trans);
@@ -361,23 +382,15 @@ struct iwl_trans_ops {
 	int (*send_cmd)(struct iwl_trans *trans, struct iwl_host_cmd *cmd);
 
 	int (*tx)(struct iwl_trans *trans, struct sk_buff *skb,
-		struct iwl_device_cmd *dev_cmd, enum iwl_rxon_context_id ctx,
-		u8 sta_id, u8 tid);
-	int (*reclaim)(struct iwl_trans *trans, int sta_id, int tid,
-			int txq_id, int ssn, struct sk_buff_head *skbs);
+		  struct iwl_device_cmd *dev_cmd, int queue);
+	void (*reclaim)(struct iwl_trans *trans, int queue, int ssn,
+			struct sk_buff_head *skbs);
 
-	int (*tx_agg_disable)(struct iwl_trans *trans,
-			      int sta_id, int tid);
-	int (*tx_agg_alloc)(struct iwl_trans *trans,
-			    int sta_id, int tid);
-	void (*tx_agg_setup)(struct iwl_trans *trans,
-			     enum iwl_rxon_context_id ctx, int sta_id, int tid,
-			     int frame_limit, u16 ssn);
-
-	void (*free)(struct iwl_trans *trans);
+	void (*tx_agg_setup)(struct iwl_trans *trans, int queue, int fifo,
+			     int sta_id, int tid, int frame_limit, u16 ssn);
+	void (*tx_agg_disable)(struct iwl_trans *trans, int queue);
 
 	int (*dbgfs_register)(struct iwl_trans *trans, struct dentry* dir);
-	int (*check_stuck_queue)(struct iwl_trans *trans, int q);
 	int (*wait_tx_queue_empty)(struct iwl_trans *trans);
 #ifdef CONFIG_PM_SLEEP
 	int (*suspend)(struct iwl_trans *trans);
@@ -388,6 +401,7 @@ struct iwl_trans_ops {
 	u32 (*read32)(struct iwl_trans *trans, u32 ofs);
 	void (*configure)(struct iwl_trans *trans,
 			  const struct iwl_trans_config *trans_cfg);
+	void (*set_pmi)(struct iwl_trans *trans, bool state);
 };
 
 /**
@@ -406,20 +420,19 @@ enum iwl_trans_state {
  *
  * @ops - pointer to iwl_trans_ops
  * @op_mode - pointer to the op_mode
- * @shrd - pointer to iwl_shared which holds shared data from the upper layer
+ * @cfg - pointer to the configuration
  * @reg_lock - protect hw register access
  * @dev - pointer to struct device * that represents the device
  * @hw_id: a u32 with the ID of the device / subdevice.
  *	Set during transport allocation.
  * @hw_id_str: a string with info about HW ID. Set during transport allocation.
- * @nvm_device_type: indicates OTP or eeprom
  * @pm_support: set to true in start_hw if link pm is supported
  * @wait_command_queue: the wait_queue for SYNC host commands
  */
 struct iwl_trans {
 	const struct iwl_trans_ops *ops;
 	struct iwl_op_mode *op_mode;
-	struct iwl_shared *shrd;
+	const struct iwl_cfg *cfg;
 	enum iwl_trans_state state;
 	spinlock_t reg_lock;
 
@@ -428,7 +441,6 @@ struct iwl_trans {
 	u32 hw_id;
 	char hw_id_str[52];
 
-	int    nvm_device_type;
 	bool pm_support;
 
 	wait_queue_head_t wait_command_queue;
@@ -457,11 +469,12 @@ static inline int iwl_trans_start_hw(struct iwl_trans *trans)
 	return trans->ops->start_hw(trans);
 }
 
-static inline void iwl_trans_stop_hw(struct iwl_trans *trans)
+static inline void iwl_trans_stop_hw(struct iwl_trans *trans,
+				     bool op_mode_leaving)
 {
 	might_sleep();
 
-	trans->ops->stop_hw(trans);
+	trans->ops->stop_hw(trans, op_mode_leaving);
 
 	trans->state = IWL_TRANS_NO_FW;
 }
@@ -508,60 +521,42 @@ static inline int iwl_trans_send_cmd(struct iwl_trans *trans,
 }
 
 static inline int iwl_trans_tx(struct iwl_trans *trans, struct sk_buff *skb,
-		struct iwl_device_cmd *dev_cmd, enum iwl_rxon_context_id ctx,
-		u8 sta_id, u8 tid)
-{
-	if (trans->state != IWL_TRANS_FW_ALIVE)
-		IWL_ERR(trans, "%s bad state = %d", __func__, trans->state);
-
-	return trans->ops->tx(trans, skb, dev_cmd, ctx, sta_id, tid);
-}
-
-static inline int iwl_trans_reclaim(struct iwl_trans *trans, int sta_id,
-				 int tid, int txq_id, int ssn,
-				 struct sk_buff_head *skbs)
+			       struct iwl_device_cmd *dev_cmd, int queue)
 {
 	WARN_ONCE(trans->state != IWL_TRANS_FW_ALIVE,
 		  "%s bad state = %d", __func__, trans->state);
 
-	return trans->ops->reclaim(trans, sta_id, tid, txq_id, ssn, skbs);
+	return trans->ops->tx(trans, skb, dev_cmd, queue);
 }
 
-static inline int iwl_trans_tx_agg_disable(struct iwl_trans *trans,
-					    int sta_id, int tid)
+static inline void iwl_trans_reclaim(struct iwl_trans *trans, int queue,
+				     int ssn, struct sk_buff_head *skbs)
 {
 	WARN_ONCE(trans->state != IWL_TRANS_FW_ALIVE,
 		  "%s bad state = %d", __func__, trans->state);
 
-	return trans->ops->tx_agg_disable(trans, sta_id, tid);
+	trans->ops->reclaim(trans, queue, ssn, skbs);
 }
 
-static inline int iwl_trans_tx_agg_alloc(struct iwl_trans *trans,
-					 int sta_id, int tid)
+static inline void iwl_trans_tx_agg_disable(struct iwl_trans *trans, int queue)
 {
 	WARN_ONCE(trans->state != IWL_TRANS_FW_ALIVE,
 		  "%s bad state = %d", __func__, trans->state);
 
-	return trans->ops->tx_agg_alloc(trans, sta_id, tid);
+	trans->ops->tx_agg_disable(trans, queue);
 }
 
-
-static inline void iwl_trans_tx_agg_setup(struct iwl_trans *trans,
-					   enum iwl_rxon_context_id ctx,
-					   int sta_id, int tid,
-					   int frame_limit, u16 ssn)
+static inline void iwl_trans_tx_agg_setup(struct iwl_trans *trans, int queue,
+					  int fifo, int sta_id, int tid,
+					  int frame_limit, u16 ssn)
 {
 	might_sleep();
 
 	WARN_ONCE(trans->state != IWL_TRANS_FW_ALIVE,
 		  "%s bad state = %d", __func__, trans->state);
 
-	trans->ops->tx_agg_setup(trans, ctx, sta_id, tid, frame_limit, ssn);
-}
-
-static inline void iwl_trans_free(struct iwl_trans *trans)
-{
-	trans->ops->free(trans);
+	trans->ops->tx_agg_setup(trans, queue, fifo, sta_id, tid,
+				 frame_limit, ssn);
 }
 
 static inline int iwl_trans_wait_tx_queue_empty(struct iwl_trans *trans)
@@ -572,13 +567,6 @@ static inline int iwl_trans_wait_tx_queue_empty(struct iwl_trans *trans)
 	return trans->ops->wait_tx_queue_empty(trans);
 }
 
-static inline int iwl_trans_check_stuck_queue(struct iwl_trans *trans, int q)
-{
-	WARN_ONCE(trans->state != IWL_TRANS_FW_ALIVE,
-		  "%s bad state = %d", __func__, trans->state);
-
-	return trans->ops->check_stuck_queue(trans, q);
-}
 static inline int iwl_trans_dbgfs_register(struct iwl_trans *trans,
 					    struct dentry *dir)
 {
@@ -612,20 +600,15 @@ static inline u32 iwl_trans_read32(struct iwl_trans *trans, u32 ofs)
 	return trans->ops->read32(trans, ofs);
 }
 
+static inline void iwl_trans_set_pmi(struct iwl_trans *trans, bool state)
+{
+	trans->ops->set_pmi(trans, state);
+}
+
 /*****************************************************
-* Transport layers implementations + their allocation function
+* driver (transport) register/unregister functions
 ******************************************************/
-struct pci_dev;
-struct pci_device_id;
-extern const struct iwl_trans_ops trans_ops_pcie;
-struct iwl_trans *iwl_trans_pcie_alloc(struct iwl_shared *shrd,
-				       struct pci_dev *pdev,
-				       const struct pci_device_id *ent);
 int __must_check iwl_pci_register_driver(void);
 void iwl_pci_unregister_driver(void);
 
-extern const struct iwl_trans_ops trans_ops_idi;
-struct iwl_trans *iwl_trans_idi_alloc(struct iwl_shared *shrd,
-				      void *pdev_void,
-				      const void *ent_void);
 #endif /* __iwl_trans_h__ */