From be237bf02382854118986e8ea84c7544e42023f2 Mon Sep 17 00:00:00 2001 From: Florin Coras Date: Fri, 27 Sep 2019 08:16:40 -0700 Subject: tcp: retry lost retransmits Add heuristic that detects lost retransmitted segments and retries sending them. Type: feature Change-Id: I34d1bb16799e1993779222eb2bfad4b40704159e Signed-off-by: Florin Coras --- src/vnet/tcp/tcp.h | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) (limited to 'src/vnet/tcp/tcp.h') diff --git a/src/vnet/tcp/tcp.h b/src/vnet/tcp/tcp.h index 1bf32818171..a31c46cdacf 100644 --- a/src/vnet/tcp/tcp.h +++ b/src/vnet/tcp/tcp.h @@ -168,7 +168,7 @@ typedef struct _sack_scoreboard u32 sacked_bytes; /**< Number of bytes sacked in sb */ u32 last_sacked_bytes; /**< Number of bytes last sacked */ u32 last_bytes_delivered; /**< Sack bytes delivered to app */ - u32 rxt_sacked; /**< Rxt last delivered */ + u32 rxt_sacked; /**< Rxt bytes last delivered */ u32 high_sacked; /**< Highest byte sacked (fack) */ u32 high_rxt; /**< Highest retransmitted sequence */ u32 rescue_rxt; /**< Rescue sequence number */ @@ -226,7 +226,7 @@ sack_scoreboard_hole_t *scoreboard_last_hole (sack_scoreboard_t * sb); void scoreboard_clear (sack_scoreboard_t * sb); void scoreboard_clear_reneging (sack_scoreboard_t * sb, u32 start, u32 end); void scoreboard_init (sack_scoreboard_t * sb); -void scoreboard_init_high_rxt (sack_scoreboard_t * sb, u32 snd_una); +void scoreboard_init_rxt (sack_scoreboard_t * sb, u32 snd_una); u8 *format_tcp_scoreboard (u8 * s, va_list * args); #define TCP_BTS_INVALID_INDEX ((u32)~0) @@ -369,7 +369,9 @@ typedef struct _tcp_connection u32 snd_rxt_bytes; /**< Retransmitted bytes during current cc event */ u32 snd_rxt_ts; /**< Timestamp when first packet is retransmitted */ u32 prr_delivered; /**< RFC6937 bytes delivered during current event */ + u32 prr_start; /**< snd_una when prr starts */ u32 rxt_delivered; /**< Rxt bytes delivered during current cc event */ + u32 rxt_head; /**< snd_una last time we re rxted the head */ u32 tsecr_last_ack; /**< Timestamp echoed to us in last healthy ACK */ u32 snd_congestion; /**< snd_una_max when congestion is detected */ u32 tx_fifo_size; /**< Tx fifo size. Used to constrain cwnd */ @@ -957,8 +959,7 @@ tcp_is_lost_fin (tcp_connection_t * tc) } u32 tcp_snd_space (tcp_connection_t * tc); -//void tcp_cc_init_congestion (tcp_connection_t * tc); -//void tcp_cc_fastrecovery_clear (tcp_connection_t * tc); +int tcp_fastrecovery_prr_snd_space (tcp_connection_t * tc); fib_node_index_t tcp_lookup_rmt_in_fib (tcp_connection_t * tc); -- cgit 1.2.3-korg