/**
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******************************************************************************
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*
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* @file rwnx_tx.h
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*
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* Copyright (C) RivieraWaves 2012-2019
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*
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******************************************************************************
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*/
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#ifndef _RWNX_TX_H_
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#define _RWNX_TX_H_
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#include <linux/ieee80211.h>
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#include <net/cfg80211.h>
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#include <linux/netdevice.h>
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#include "lmac_types.h"
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#include "ipc_shared.h"
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#include "rwnx_txq.h"
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#include "hal_desc.h"
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#define RWNX_HWQ_BK 0
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#define RWNX_HWQ_BE 1
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#define RWNX_HWQ_VI 2
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#define RWNX_HWQ_VO 3
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#define RWNX_HWQ_BCMC 4
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#define RWNX_HWQ_NB NX_TXQ_CNT
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#define RWNX_HWQ_ALL_ACS (RWNX_HWQ_BK | RWNX_HWQ_BE | RWNX_HWQ_VI | RWNX_HWQ_VO)
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#define RWNX_HWQ_ALL_ACS_BIT (BIT(RWNX_HWQ_BK) | BIT(RWNX_HWQ_BE) | \
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BIT(RWNX_HWQ_VI) | BIT(RWNX_HWQ_VO))
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#define RWNX_TX_LIFETIME_MS 1000
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#define RWNX_TX_MAX_RATES NX_TX_MAX_RATES
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#define RWNX_SWTXHDR_ALIGN_SZ 4
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#define RWNX_SWTXHDR_ALIGN_MSK (RWNX_SWTXHDR_ALIGN_SZ - 1)
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#define RWNX_SWTXHDR_ALIGN_PADS(x) \
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((RWNX_SWTXHDR_ALIGN_SZ - ((x) & RWNX_SWTXHDR_ALIGN_MSK)) \
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& RWNX_SWTXHDR_ALIGN_MSK)
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#if RWNX_SWTXHDR_ALIGN_SZ & RWNX_SWTXHDR_ALIGN_MSK
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#error bad RWNX_SWTXHDR_ALIGN_SZ
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#endif
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#define AMSDU_PADDING(x) ((4 - ((x) & 0x3)) & 0x3)
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#define TXU_CNTRL_RETRY BIT(0)
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#define TXU_CNTRL_MORE_DATA BIT(2)
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#define TXU_CNTRL_MGMT BIT(3)
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#define TXU_CNTRL_MGMT_NO_CCK BIT(4)
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#define TXU_CNTRL_AMSDU BIT(6)
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#define TXU_CNTRL_MGMT_ROBUST BIT(7)
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#define TXU_CNTRL_USE_4ADDR BIT(8)
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#define TXU_CNTRL_EOSP BIT(9)
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#define TXU_CNTRL_MESH_FWD BIT(10)
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#define TXU_CNTRL_TDLS BIT(11)
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extern const int rwnx_tid2hwq[IEEE80211_NUM_TIDS];
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/**
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* struct rwnx_amsdu_txhdr - Structure added in skb headroom (instead of
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* rwnx_txhdr) for amsdu subframe buffer (except for the first subframe
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* that has a normal rwnx_txhdr)
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*
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* @list List of other amsdu subframe (rwnx_sw_txhdr.amsdu.hdrs)
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* @map_len Length to be downloaded for this subframe
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* @dma_addr Buffer address form embedded point of view
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* @skb skb
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* @pad padding added before this subframe
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* (only use when amsdu must be dismantled)
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* @msdu_len Size, in bytes, of the MSDU (without padding nor amsdu header)
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*/
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struct rwnx_amsdu_txhdr {
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struct list_head list;
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size_t map_len;
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dma_addr_t dma_addr;
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struct sk_buff *skb;
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u16 pad;
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u16 msdu_len;
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};
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/**
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* struct rwnx_amsdu - Structure to manage creation of an A-MSDU, updated
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* only In the first subframe of an A-MSDU
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*
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* @hdrs List of subframe of rwnx_amsdu_txhdr
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* @len Current size for this A-MDSU (doesn't take padding into account)
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* 0 means that no amsdu is in progress
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* @nb Number of subframe in the amsdu
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* @pad Padding to add before adding a new subframe
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*/
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struct rwnx_amsdu {
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struct list_head hdrs;
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u16 len;
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u8 nb;
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u8 pad;
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};
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/**
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* struct rwnx_sw_txhdr - Software part of tx header
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*
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* @rwnx_sta sta to which this buffer is addressed
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* @rwnx_vif vif that send the buffer
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* @txq pointer to TXQ used to send the buffer
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* @hw_queue Index of the HWQ used to push the buffer.
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* May be different than txq->hwq->id on confirmation.
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* @frame_len Size of the frame (doesn't not include mac header)
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* (Only used to update stat, can't we use skb->len instead ?)
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* @headroom Headroom added in skb to add rwnx_txhdr
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* (Only used to remove it before freeing skb, is it needed ?)
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* @amsdu Description of amsdu whose first subframe is this buffer
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* (amsdu.nb = 0 means this buffer is not part of amsdu)
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* @skb skb received from transmission
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* @map_len Length mapped for DMA (only rwnx_hw_txhdr and data are mapped)
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* @dma_addr DMA address after mapping
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* @desc Buffer description that will be copied in shared mem for FW
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*/
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struct rwnx_sw_txhdr {
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struct rwnx_sta *rwnx_sta;
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struct rwnx_vif *rwnx_vif;
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struct rwnx_txq *txq;
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u8 hw_queue;
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u16 frame_len;
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u16 headroom;
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#ifdef CONFIG_RWNX_AMSDUS_TX
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struct rwnx_amsdu amsdu;
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#endif
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u32 need_cfm;
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struct sk_buff *skb;
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size_t map_len;
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dma_addr_t dma_addr;
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struct txdesc_api desc;
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};
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/**
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* struct rwnx_txhdr - Stucture to control transimission of packet
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* (Added in skb headroom)
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*
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* @sw_hdr: Information from driver
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* @cache_guard:
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* @hw_hdr: Information for/from hardware
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*/
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struct rwnx_txhdr {
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struct rwnx_sw_txhdr *sw_hdr;
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char cache_guard[L1_CACHE_BYTES];
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struct rwnx_hw_txhdr hw_hdr;
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};
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u16 rwnx_select_txq(struct rwnx_vif *rwnx_vif, struct sk_buff *skb);
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netdev_tx_t rwnx_start_xmit(struct sk_buff *skb, struct net_device *dev);
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#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3, 14, 0))
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int rwnx_start_mgmt_xmit(struct rwnx_vif *vif, struct rwnx_sta *sta,
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struct cfg80211_mgmt_tx_params *params, bool offchan,
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u64 *cookie);
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#else
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int rwnx_start_mgmt_xmit(struct rwnx_vif *vif, struct rwnx_sta *sta,
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struct ieee80211_channel *channel, bool offchan,
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unsigned int wait, const u8 *buf, size_t len,
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#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3, 2, 0))
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bool no_cck,
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#endif
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#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3, 3, 0))
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bool dont_wait_for_ack,
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#endif
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u64 *cookie);
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#endif /* LINUX_VERSION_CODE >= KERNEL_VERSION(3, 14, 0) */
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int rwnx_txdatacfm(void *pthis, void *host_id);
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struct rwnx_hw;
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struct rwnx_sta;
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void rwnx_set_traffic_status(struct rwnx_hw *rwnx_hw,
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struct rwnx_sta *sta,
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bool available,
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u8 ps_id);
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void rwnx_ps_bh_enable(struct rwnx_hw *rwnx_hw, struct rwnx_sta *sta,
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bool enable);
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void rwnx_ps_bh_traffic_req(struct rwnx_hw *rwnx_hw, struct rwnx_sta *sta,
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u16 pkt_req, u8 ps_id);
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void rwnx_switch_vif_sta_txq(struct rwnx_sta *sta, struct rwnx_vif *old_vif,
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struct rwnx_vif *new_vif);
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int rwnx_dbgfs_print_sta(char *buf, size_t size, struct rwnx_sta *sta,
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struct rwnx_hw *rwnx_hw);
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void rwnx_txq_credit_update(struct rwnx_hw *rwnx_hw, int sta_idx, u8 tid,
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s8 update);
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void rwnx_tx_push(struct rwnx_hw *rwnx_hw, struct rwnx_txhdr *txhdr, int flags);
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#endif /* _RWNX_TX_H_ */
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