From 4fd6229147e5c58ecf51d7f07ee5247846d0338d Mon Sep 17 00:00:00 2001 From: Glen Lee Date: Thu, 4 Feb 2016 18:15:24 +0900 Subject: 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/wilc_wlan.c | 27 +++++++++++++++++---------- 1 file changed, 17 insertions(+), 10 deletions(-) (limited to 'drivers/staging/wilc1000/wilc_wlan.c') diff --git a/drivers/staging/wilc1000/wilc_wlan.c b/drivers/staging/wilc1000/wilc_wlan.c index 9442016..04d4c92 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 { -- cgit v1.1