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Subject[PATCH v2 15/50] wilc1000: add struct wilc_skb_tx_cb as an alias of struct txq_entry_t
Date
This is in preparation of the next patch, which removes struct
wilc_skb_tx_cb in favor of struct sk_buffs. That change requires
moving the driver-private state for tx packets from struct txq_entry_t
to the "control buffer" (cb field) of struct sk_buff. Making that
move now makes the next patch a bit smaller and easier to understand.

Signed-off-by: David Mosberger-Tang <davidm@egauge.net>
---
.../net/wireless/microchip/wilc1000/wlan.c | 36 +++++++++++--------
.../net/wireless/microchip/wilc1000/wlan.h | 7 ++++
2 files changed, 29 insertions(+), 14 deletions(-)

diff --git a/drivers/net/wireless/microchip/wilc1000/wlan.c b/drivers/net/wireless/microchip/wilc1000/wlan.c
index 7106e6be719c1..c352e939f1901 100644
--- a/drivers/net/wireless/microchip/wilc1000/wlan.c
+++ b/drivers/net/wireless/microchip/wilc1000/wlan.c
@@ -67,10 +67,12 @@ wilc_wlan_txq_remove_from_head(struct wilc *wilc, u8 q_num)
static void init_txq_entry(struct txq_entry_t *tqe, struct wilc_vif *vif,
u8 type, enum ip_pkt_priority q_num)
{
+ struct wilc_skb_tx_cb *tx_cb = WILC_SKB_TX_CB(tqe);
+
tqe->vif = vif;
- tqe->q_num = q_num;
- tqe->type = type;
- tqe->ack_idx = NOT_TCP_ACK;
+ tx_cb->type = type;
+ tx_cb->q_num = q_num;
+ tx_cb->ack_idx = NOT_TCP_ACK;
}

static void wilc_wlan_txq_add_to_tail(struct net_device *dev, u8 type, u8 q_num,
@@ -143,6 +145,7 @@ static inline void add_tcp_pending_ack(struct wilc_vif *vif, u32 ack,
u32 session_index,
struct txq_entry_t *txqe)
{
+ struct wilc_skb_tx_cb *tx_cb = WILC_SKB_TX_CB(txqe);
struct tcp_ack_filter *f = &vif->ack_filter;
u32 i = f->pending_base + f->pending_acks_idx;

@@ -150,7 +153,7 @@ static inline void add_tcp_pending_ack(struct wilc_vif *vif, u32 ack,
f->pending_acks[i].ack_num = ack;
f->pending_acks[i].txqe = txqe;
f->pending_acks[i].session_index = session_index;
- txqe->ack_idx = i;
+ tx_cb->ack_idx = i;
f->pending_acks_idx++;
}
}
@@ -210,7 +213,8 @@ static inline void tcp_process(struct net_device *dev, struct txq_entry_t *tqe)
static void wilc_wlan_tx_packet_done(struct txq_entry_t *tqe, int status)
{
struct wilc_vif *vif = tqe->vif;
- int ack_idx = tqe->ack_idx;
+ struct wilc_skb_tx_cb *tx_cb = WILC_SKB_TX_CB(tqe);
+ int ack_idx = tx_cb->ack_idx;

tqe->status = status;
if (tqe->tx_complete_func)
@@ -224,10 +228,11 @@ static void wilc_wlan_txq_drop_net_pkt(struct txq_entry_t *tqe)
{
struct wilc_vif *vif = tqe->vif;
struct wilc *wilc = vif->wilc;
+ struct wilc_skb_tx_cb *tx_cb = WILC_SKB_TX_CB(tqe);

vif->ndev->stats.tx_dropped++;

- wilc_wlan_txq_remove(wilc, tqe->q_num, tqe);
+ wilc_wlan_txq_remove(wilc, tx_cb->q_num, tqe);
wilc_wlan_tx_packet_done(tqe, 1);
}

@@ -728,6 +733,7 @@ int wilc_wlan_handle_txq(struct wilc *wilc, u32 *txq_count)
bool max_size_over = 0, ac_exist = 0;
int vmm_sz = 0;
struct txq_entry_t *tqe_q[NQUEUES];
+ struct wilc_skb_tx_cb *tx_cb;
int ret = 0;
int counter;
int timeout;
@@ -772,9 +778,10 @@ int wilc_wlan_handle_txq(struct wilc *wilc, u32 *txq_count)
break;
}

- if (tqe_q[ac]->type == WILC_CFG_PKT)
+ tx_cb = WILC_SKB_TX_CB(tqe_q[ac]);
+ if (tx_cb->type == WILC_CFG_PKT)
vmm_sz = ETH_CONFIG_PKT_HDR_OFFSET;
- else if (tqe_q[ac]->type == WILC_NET_PKT)
+ else if (tx_cb->type == WILC_NET_PKT)
vmm_sz = ETH_ETHERNET_HDR_OFFSET;
else
vmm_sz = HOST_HDR_OFFSET;
@@ -787,7 +794,7 @@ int wilc_wlan_handle_txq(struct wilc *wilc, u32 *txq_count)
break;
}
vmm_table[i] = vmm_sz / 4;
- if (tqe_q[ac]->type == WILC_CFG_PKT)
+ if (tx_cb->type == WILC_CFG_PKT)
vmm_table[i] |= BIT(10);

cpu_to_le32s(&vmm_table[i]);
@@ -898,6 +905,7 @@ int wilc_wlan_handle_txq(struct wilc *wilc, u32 *txq_count)

ac_pkt_num_to_chip[vmm_entries_ac[i]]++;
vif = tqe->vif;
+ tx_cb = WILC_SKB_TX_CB(tqe);
if (vmm_table[i] == 0)
break;

@@ -905,20 +913,20 @@ int wilc_wlan_handle_txq(struct wilc *wilc, u32 *txq_count)
vmm_sz = FIELD_GET(WILC_VMM_BUFFER_SIZE, vmm_table[i]);
vmm_sz *= 4;

- if (tqe->type == WILC_MGMT_PKT)
+ if (tx_cb->type == WILC_MGMT_PKT)
mgmt_ptk = 1;

- header = (FIELD_PREP(WILC_VMM_HDR_TYPE, tqe->type) |
+ header = (FIELD_PREP(WILC_VMM_HDR_TYPE, tx_cb->type) |
FIELD_PREP(WILC_VMM_HDR_MGMT_FIELD, mgmt_ptk) |
FIELD_PREP(WILC_VMM_HDR_PKT_SIZE, tqe->buffer_size) |
FIELD_PREP(WILC_VMM_HDR_BUFF_SIZE, vmm_sz));

cpu_to_le32s(&header);
memcpy(&txb[offset], &header, 4);
- if (tqe->type == WILC_CFG_PKT) {
+ if (tx_cb->type == WILC_CFG_PKT) {
buffer_offset = ETH_CONFIG_PKT_HDR_OFFSET;
- } else if (tqe->type == WILC_NET_PKT) {
- int prio = tqe->q_num;
+ } else if (tx_cb->type == WILC_NET_PKT) {
+ int prio = tx_cb->q_num;

bssid = tqe->vif->bssid;
buffer_offset = ETH_ETHERNET_HDR_OFFSET;
diff --git a/drivers/net/wireless/microchip/wilc1000/wlan.h b/drivers/net/wireless/microchip/wilc1000/wlan.h
index 9b33262909e2f..295795a8060ac 100644
--- a/drivers/net/wireless/microchip/wilc1000/wlan.h
+++ b/drivers/net/wireless/microchip/wilc1000/wlan.h
@@ -333,6 +333,13 @@ struct txq_entry_t {
void (*tx_complete_func)(void *priv, int status);
};

+#define wilc_skb_tx_cb txq_entry_t
+
+static inline struct wilc_skb_tx_cb *WILC_SKB_TX_CB(struct txq_entry_t *tqe)
+{
+ return (struct wilc_skb_tx_cb *)tqe;
+}
+
struct txq_fw_recv_queue_stat {
u8 acm;
u8 count;
--
2.25.1
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