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authorFlorin Coras <fcoras@cisco.com>2018-06-25 16:19:34 -0700
committerDamjan Marion <dmarion@me.com>2018-06-26 12:10:13 +0000
commit0dbd5171344bf89d1519dae7e8ddbc056df6132e (patch)
treee0e7dfac38662bf090e90ce740c6e6bd5bf05094 /src/vnet/tcp/tcp_output.c
parent32ab95426d40920c526f0de89a43f88819616ed8 (diff)
tcp: cleanup functions
- sprinkle statics for functions - move some inlines from header files to corresponding .c files - replace some always_inlines with statics where inlining is not performance critical Change-Id: I371dbf63431ce7e27e4ebbbdd844a9546a1f1849 Signed-off-by: Florin Coras <fcoras@cisco.com>
Diffstat (limited to 'src/vnet/tcp/tcp_output.c')
-rw-r--r--src/vnet/tcp/tcp_output.c135
1 files changed, 67 insertions, 68 deletions
diff --git a/src/vnet/tcp/tcp_output.c b/src/vnet/tcp/tcp_output.c
index e29eb6d7f9a..13eac11105c 100644
--- a/src/vnet/tcp/tcp_output.c
+++ b/src/vnet/tcp/tcp_output.c
@@ -131,30 +131,7 @@ tcp_initial_window_to_advertise (tcp_connection_t * tc)
return clib_min (tc->rcv_wnd, TCP_WND_MAX);
}
-/**
- * Compute and return window to advertise, scaled as per RFC1323
- */
-u32
-tcp_window_to_advertise (tcp_connection_t * tc, tcp_state_t state)
-{
- if (state < TCP_STATE_ESTABLISHED)
- return tcp_initial_window_to_advertise (tc);
-
- tcp_update_rcv_wnd (tc);
-
- if (tc->rcv_wnd == 0)
- {
- tc->flags |= TCP_CONN_SENT_RCV_WND0;
- }
- else
- {
- tc->flags &= ~TCP_CONN_SENT_RCV_WND0;
- }
-
- return tc->rcv_wnd >> tc->rcv_wscale;
-}
-
-void
+static void
tcp_update_rcv_wnd (tcp_connection_t * tc)
{
i32 observed_wnd;
@@ -201,9 +178,32 @@ tcp_update_rcv_wnd (tcp_connection_t * tc)
}
/**
+ * Compute and return window to advertise, scaled as per RFC1323
+ */
+static u32
+tcp_window_to_advertise (tcp_connection_t * tc, tcp_state_t state)
+{
+ if (state < TCP_STATE_ESTABLISHED)
+ return tcp_initial_window_to_advertise (tc);
+
+ tcp_update_rcv_wnd (tc);
+
+ if (tc->rcv_wnd == 0)
+ {
+ tc->flags |= TCP_CONN_SENT_RCV_WND0;
+ }
+ else
+ {
+ tc->flags &= ~TCP_CONN_SENT_RCV_WND0;
+ }
+
+ return tc->rcv_wnd >> tc->rcv_wscale;
+}
+
+/**
* Write TCP options to segment.
*/
-u32
+static u32
tcp_options_write (u8 * data, tcp_options_t * opts)
{
u32 opts_len = 0;
@@ -286,7 +286,7 @@ tcp_options_write (u8 * data, tcp_options_t * opts)
return opts_len;
}
-always_inline int
+static int
tcp_make_syn_options (tcp_options_t * opts, u8 wnd_scale)
{
u8 len = 0;
@@ -315,7 +315,7 @@ tcp_make_syn_options (tcp_options_t * opts, u8 wnd_scale)
return len;
}
-always_inline int
+static int
tcp_make_synack_options (tcp_connection_t * tc, tcp_options_t * opts)
{
u8 len = 0;
@@ -350,7 +350,7 @@ tcp_make_synack_options (tcp_connection_t * tc, tcp_options_t * opts)
return len;
}
-always_inline int
+static int
tcp_make_established_options (tcp_connection_t * tc, tcp_options_t * opts)
{
u8 len = 0;
@@ -444,7 +444,7 @@ tcp_init_mss (tcp_connection_t * tc)
tc->snd_mss -= TCP_OPTION_LEN_TIMESTAMP;
}
-always_inline int
+static int
tcp_alloc_tx_buffers (tcp_main_t * tm, u8 thread_index, u16 * n_bufs,
u32 wanted)
{
@@ -483,7 +483,7 @@ tcp_get_free_buffer_index (tcp_main_t * tm, u32 * bidx)
return 0;
}
-always_inline void *
+static void *
tcp_reuse_buffer (vlib_main_t * vm, vlib_buffer_t * b)
{
if (b->flags & VLIB_BUFFER_NEXT_PRESENT)
@@ -499,7 +499,7 @@ tcp_reuse_buffer (vlib_main_t * vm, vlib_buffer_t * b)
return vlib_buffer_make_headroom (b, MAX_HDRS_LEN);
}
-always_inline void *
+static void *
tcp_init_buffer (vlib_main_t * vm, vlib_buffer_t * b)
{
ASSERT ((b->flags & VLIB_BUFFER_NEXT_PRESENT) == 0);
@@ -516,7 +516,7 @@ tcp_init_buffer (vlib_main_t * vm, vlib_buffer_t * b)
/**
* Prepare ACK
*/
-void
+static void
tcp_make_ack_i (tcp_connection_t * tc, vlib_buffer_t * b, tcp_state_t state,
u8 flags)
{
@@ -666,14 +666,14 @@ tcp_enqueue_to_ip_lookup_i (vlib_main_t * vm, vlib_buffer_t * b, u32 bi,
}
}
-always_inline void
+static void
tcp_enqueue_to_ip_lookup_now (vlib_main_t * vm, vlib_buffer_t * b, u32 bi,
u8 is_ip4, u32 fib_index)
{
tcp_enqueue_to_ip_lookup_i (vm, b, bi, is_ip4, fib_index, 1);
}
-always_inline void
+static void
tcp_enqueue_to_ip_lookup (vlib_main_t * vm, vlib_buffer_t * b, u32 bi,
u8 is_ip4, u32 fib_index)
{
@@ -716,20 +716,20 @@ tcp_enqueue_to_output_i (vlib_main_t * vm, vlib_buffer_t * b, u32 bi,
}
}
-always_inline void
+static void
tcp_enqueue_to_output (vlib_main_t * vm, vlib_buffer_t * b, u32 bi, u8 is_ip4)
{
tcp_enqueue_to_output_i (vm, b, bi, is_ip4, 0);
}
-always_inline void
+static void
tcp_enqueue_to_output_now (vlib_main_t * vm, vlib_buffer_t * b, u32 bi,
u8 is_ip4)
{
tcp_enqueue_to_output_i (vm, b, bi, is_ip4, 1);
}
-int
+static int
tcp_make_reset_in_place (vlib_main_t * vm, vlib_buffer_t * b0,
tcp_state_t state, u8 thread_index, u8 is_ip4)
{
@@ -938,7 +938,7 @@ tcp_send_reset (tcp_connection_t * tc)
TCP_EVT_DBG (TCP_EVT_RST_SENT, tc);
}
-void
+static void
tcp_push_ip_hdr (tcp_main_t * tm, tcp_connection_t * tc, vlib_buffer_t * b)
{
tcp_header_t *th = vlib_buffer_get_current (b);
@@ -1022,7 +1022,7 @@ tcp_flush_frame_to_output (vlib_main_t * vm, u8 thread_index, u8 is_ip4)
/**
* Flush ip lookup tx frames populated by timer pops
*/
-always_inline void
+static void
tcp_flush_frame_to_ip_lookup (vlib_main_t * vm, u8 thread_index, u8 is_ip4)
{
if (tcp_main.wrk_ctx[thread_index].ip_lookup_tx_frames[!is_ip4])
@@ -1114,7 +1114,7 @@ tcp_make_state_flags (tcp_connection_t * tc, tcp_state_t next_state)
/**
* Push TCP header and update connection variables
*/
-static void
+always_inline void
tcp_push_hdr_i (tcp_connection_t * tc, vlib_buffer_t * b,
tcp_state_t next_state, u8 compute_opts)
{
@@ -1153,6 +1153,28 @@ tcp_push_hdr_i (tcp_connection_t * tc, vlib_buffer_t * b,
TCP_EVT_DBG (TCP_EVT_PKTIZE, tc);
}
+u32
+tcp_push_header (tcp_connection_t * tc, vlib_buffer_t * b)
+{
+ tcp_push_hdr_i (tc, b, TCP_STATE_ESTABLISHED, 0);
+ tc->snd_una_max = tc->snd_nxt;
+ ASSERT (seq_leq (tc->snd_una_max, tc->snd_una + tc->snd_wnd));
+ tcp_validate_txf_size (tc, tc->snd_una_max - tc->snd_una);
+ /* If not tracking an ACK, start tracking */
+ if (tc->rtt_ts == 0 && !tcp_in_cong_recovery (tc))
+ {
+ tc->rtt_ts = tcp_time_now ();
+ tc->rtt_seq = tc->snd_nxt;
+ }
+ if (PREDICT_FALSE (!tcp_timer_is_active (tc, TCP_TIMER_RETRANSMIT)))
+ {
+ tcp_retransmit_timer_set (tc);
+ tc->rto_boff = 0;
+ }
+ tcp_trajectory_add_start (b, 3);
+ return 0;
+}
+
void
tcp_send_ack (tcp_connection_t * tc)
{
@@ -1195,7 +1217,7 @@ tcp_timer_delack_handler (u32 index)
* @return the number of bytes in the segment or 0 if there's nothing to
* retransmit
*/
-u32
+static u32
tcp_prepare_retransmit_segment (tcp_connection_t * tc, u32 offset,
u32 max_deq_bytes, vlib_buffer_t ** b)
{
@@ -1356,7 +1378,7 @@ tcp_rxt_timeout_cc (tcp_connection_t * tc)
tcp_recovery_on (tc);
}
-static void
+static inline void
tcp_timer_retransmit_handler_i (u32 index, u8 is_syn)
{
tcp_main_t *tm = vnet_get_tcp_main ();
@@ -1755,7 +1777,7 @@ tcp_fast_retransmit (tcp_connection_t * tc)
tcp_fast_retransmit_no_sack (tc);
}
-always_inline u32
+static u32
tcp_session_has_ooo_data (tcp_connection_t * tc)
{
stream_session_t *s = session_get (tc->c_s_index, tc->c_thread_index);
@@ -1817,7 +1839,7 @@ tcp46_output_trace_frame (vlib_main_t * vm, vlib_node_runtime_t * node,
}
}
-static inline void
+always_inline void
tcp_output_push_ip (vlib_main_t * vm, vlib_buffer_t * b0,
tcp_connection_t * tc0, u8 is_ip4)
{
@@ -1845,7 +1867,7 @@ tcp_output_push_ip (vlib_main_t * vm, vlib_buffer_t * b0,
}
}
-static inline void
+always_inline void
tcp_output_handle_packet (tcp_connection_t * tc0, vlib_buffer_t * b0,
u32 * error0, u16 * next0, u8 is_ip4)
{
@@ -2022,29 +2044,6 @@ VLIB_REGISTER_NODE (tcp6_output_node) =
VLIB_NODE_FUNCTION_MULTIARCH (tcp6_output_node, tcp6_output);
-u32
-tcp_session_push_header (transport_connection_t * tconn, vlib_buffer_t * b)
-{
- tcp_connection_t *tc = (tcp_connection_t *) tconn;
- tcp_push_hdr_i (tc, b, TCP_STATE_ESTABLISHED, 0);
- tc->snd_una_max = tc->snd_nxt;
- ASSERT (seq_leq (tc->snd_una_max, tc->snd_una + tc->snd_wnd));
- tcp_validate_txf_size (tc, tc->snd_una_max - tc->snd_una);
- /* If not tracking an ACK, start tracking */
- if (tc->rtt_ts == 0 && !tcp_in_cong_recovery (tc))
- {
- tc->rtt_ts = tcp_time_now ();
- tc->rtt_seq = tc->snd_nxt;
- }
- if (PREDICT_FALSE (!tcp_timer_is_active (tc, TCP_TIMER_RETRANSMIT)))
- {
- tcp_retransmit_timer_set (tc);
- tc->rto_boff = 0;
- }
- tcp_trajectory_add_start (b, 3);
- return 0;
-}
-
typedef enum _tcp_reset_next
{
TCP_RESET_NEXT_DROP,