From 4fd6229147e5c58ecf51d7f07ee5247846d0338d Mon Sep 17 00:00:00 2001 From: Glen Lee Date: Thu, 4 Feb 2016 18:15:24 +0900 Subject: [PATCH] staging: wilc1000: increase link speed This patch increases throughput by enabling tcp ack filter base on checking statistics and also handling tcp session. Signed-off-by: Glen Lee Signed-off-by: Greg Kroah-Hartman --- drivers/staging/wilc1000/host_interface.c | 31 +++++++++---------- drivers/staging/wilc1000/wilc_wfi_netdevice.h | 2 ++ drivers/staging/wilc1000/wilc_wlan.c | 27 ++++++++++------ 3 files changed, 34 insertions(+), 26 deletions(-) diff --git a/drivers/staging/wilc1000/host_interface.c b/drivers/staging/wilc1000/host_interface.c index 7e1b5a097249..4bbf38c05940 100644 --- a/drivers/staging/wilc1000/host_interface.c +++ b/drivers/staging/wilc1000/host_interface.c @@ -57,6 +57,9 @@ #define BLOCK_ACK_REQ_SIZE 0x14 #define FALSE_FRMWR_CHANNEL 100 +#define TCP_ACK_FILTER_LINK_SPEED_THRESH 54 +#define DEFAULT_LINK_SPEED 72 + struct cfg_param_attr { struct cfg_param_val cfg_attr_info; }; @@ -2187,7 +2190,14 @@ static s32 Handle_GetStatistics(struct wilc_vif *vif, if (result) PRINT_ER("Failed to send scan paramters config packet\n"); - up(&hif_sema_wait_response); + if (pstrStatistics->link_speed > TCP_ACK_FILTER_LINK_SPEED_THRESH && + pstrStatistics->link_speed != DEFAULT_LINK_SPEED) + wilc_enable_tcp_ack_filter(true); + else if (pstrStatistics->link_speed != DEFAULT_LINK_SPEED) + wilc_enable_tcp_ack_filter(false); + + if (pstrStatistics != &vif->wilc->dummy_statistics) + up(&hif_sema_wait_response); return 0; } @@ -3606,7 +3616,8 @@ int wilc_get_statistics(struct wilc_vif *vif, struct rf_info *stats) return -EFAULT; } - down(&hif_sema_wait_response); + if (stats != &vif->wilc->dummy_statistics) + down(&hif_sema_wait_response); return result; } @@ -3698,21 +3709,9 @@ static void GetPeriodicRSSI(unsigned long arg) return; } - if (vif->hif_drv->hif_state == HOST_IF_CONNECTED) { - s32 result = 0; - struct host_if_msg msg; - - memset(&msg, 0, sizeof(struct host_if_msg)); - - msg.id = HOST_IF_MSG_GET_RSSI; - msg.vif = vif; + if (vif->hif_drv->hif_state == HOST_IF_CONNECTED) + wilc_get_statistics(vif, &vif->wilc->dummy_statistics); - result = wilc_mq_send(&hif_msg_q, &msg, sizeof(struct host_if_msg)); - if (result) { - PRINT_ER("Failed to send get host channel param's message queue "); - return; - } - } periodic_rssi.data = (unsigned long)vif; mod_timer(&periodic_rssi, jiffies + msecs_to_jiffies(5000)); } diff --git a/drivers/staging/wilc1000/wilc_wfi_netdevice.h b/drivers/staging/wilc1000/wilc_wfi_netdevice.h index 54e762ec815f..9f8c79e3d195 100644 --- a/drivers/staging/wilc1000/wilc_wfi_netdevice.h +++ b/drivers/staging/wilc1000/wilc_wfi_netdevice.h @@ -217,6 +217,8 @@ struct wilc { struct device *dev; bool suspend_event; + + struct rf_info dummy_statistics; }; struct WILC_WFI_mon_priv { diff --git a/drivers/staging/wilc1000/wilc_wlan.c b/drivers/staging/wilc1000/wilc_wlan.c index 94420161eb5d..04d4c92e3948 100644 --- a/drivers/staging/wilc1000/wilc_wlan.c +++ b/drivers/staging/wilc1000/wilc_wlan.c @@ -178,19 +178,21 @@ static inline int init_tcp_tracking(void) static inline int add_tcp_session(u32 src_prt, u32 dst_prt, u32 seq) { - ack_session_info[tcp_session].seq_num = seq; - ack_session_info[tcp_session].bigger_ack_num = 0; - ack_session_info[tcp_session].src_port = src_prt; - ack_session_info[tcp_session].dst_port = dst_prt; - tcp_session++; - + if (tcp_session < 2 * MAX_TCP_SESSION) { + ack_session_info[tcp_session].seq_num = seq; + ack_session_info[tcp_session].bigger_ack_num = 0; + ack_session_info[tcp_session].src_port = src_prt; + ack_session_info[tcp_session].dst_port = dst_prt; + tcp_session++; + } PRINT_D(TCP_ENH, "TCP Session %d to Ack %d\n", tcp_session, seq); return 0; } static inline int update_tcp_session(u32 index, u32 ack) { - if (ack > ack_session_info[index].bigger_ack_num) + if (index < 2 * MAX_TCP_SESSION && + ack > ack_session_info[index].bigger_ack_num) ack_session_info[index].bigger_ack_num = ack; return 0; } @@ -198,7 +200,7 @@ static inline int update_tcp_session(u32 index, u32 ack) static inline int add_tcp_pending_ack(u32 ack, u32 session_index, struct txq_entry_t *txqe) { - if (pending_acks < MAX_PENDING_ACKS) { + if (pending_base + pending_acks < MAX_PENDING_ACKS) { pending_acks_info[pending_base + pending_acks].ack_num = ack; pending_acks_info[pending_base + pending_acks].txqe = txqe; pending_acks_info[pending_base + pending_acks].session_index = session_index; @@ -265,7 +267,8 @@ static inline int tcp_process(struct net_device *dev, struct txq_entry_t *tqe) (u32)tcp_hdr_ptr[11]; for (i = 0; i < tcp_session; i++) { - if (ack_session_info[i].seq_num == seq_no) { + if (i < 2 * MAX_TCP_SESSION && + ack_session_info[i].seq_num == seq_no) { update_tcp_session(i, ack_no); break; } @@ -298,6 +301,9 @@ static int wilc_wlan_txq_filter_dup_tcp_ack(struct net_device *dev) spin_lock_irqsave(&wilc->txq_spinlock, wilc->txq_spinlock_flags); for (i = pending_base; i < (pending_base + pending_acks); i++) { + if (i >= MAX_PENDING_ACKS || + pending_acks_info[i].session_index >= 2 * MAX_TCP_SESSION) + break; if (pending_acks_info[i].ack_num < ack_session_info[pending_acks_info[i].session_index].bigger_ack_num) { struct txq_entry_t *tqe; @@ -815,7 +821,8 @@ int wilc_wlan_handle_txq(struct net_device *dev, u32 *txq_count) if (tqe->tx_complete_func) tqe->tx_complete_func(tqe->priv, tqe->status); - if (tqe->tcp_pending_ack_idx != NOT_TCP_ACK) + if (tqe->tcp_pending_ack_idx != NOT_TCP_ACK && + tqe->tcp_pending_ack_idx < MAX_PENDING_ACKS) pending_acks_info[tqe->tcp_pending_ack_idx].txqe = NULL; kfree(tqe); } else { -- 2.20.1