From 9ece3c03133309dda1f7f7f292bd071fa1ccb0f1 Mon Sep 17 00:00:00 2001 From: Florin Coras Date: Mon, 5 Nov 2018 11:06:53 -0800 Subject: tcp: dequeue acked only once per burst Avoid dequeuing acked bytes more than once per burst for a connection. Although the fifos do not use locks, size decrements are atomic, so they rely on locked instructions. Change-Id: Id65f4ea40b2c10057461402dfd0393034e6472d5 Signed-off-by: Florin Coras --- src/vnet/tcp/tcp.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'src/vnet/tcp/tcp.h') diff --git a/src/vnet/tcp/tcp.h b/src/vnet/tcp/tcp.h index bd5e4f71bdb..480b924c882 100644 --- a/src/vnet/tcp/tcp.h +++ b/src/vnet/tcp/tcp.h @@ -122,6 +122,7 @@ extern timer_expiration_handler tcp_timer_retransmit_syn_handler; _(FINPNDG, "FIN pending") \ _(FRXT_PENDING, "Fast-retransmit pending") \ _(FRXT_FIRST, "Fast-retransmit first again") \ + _(DEQ_PENDING, "Pending dequeue acked") \ typedef enum _tcp_connection_flag_bits { @@ -308,6 +309,7 @@ typedef struct _tcp_connection u32 prev_ssthresh; /**< ssthresh before congestion */ u32 prev_cwnd; /**< ssthresh before congestion */ u32 bytes_acked; /**< Bytes acknowledged by current segment */ + u32 burst_acked; /**< Bytes acknowledged in current burst */ u32 snd_rxt_bytes; /**< Retransmitted bytes */ u32 snd_rxt_ts; /**< Timestamp when first packet is retransmitted */ u32 tsecr_last_ack; /**< Timestamp echoed to us in last healthy ACK */ @@ -392,6 +394,7 @@ typedef struct tcp_worker_ctx_ now doing fast rxt */ u32 *postponed_fast_rxt; /**< vector of connections that will do fast rxt */ + u32 *pending_deq_acked; vlib_main_t *vm; /**< pointer to vm */ CLIB_CACHE_LINE_ALIGN_MARK (cacheline1); -- cgit 1.2.3-korg