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-rw-r--r--src/vnet/session/session.h1
-rw-r--r--src/vnet/session/session_node.c16
-rw-r--r--src/vnet/session/transport.h3
-rw-r--r--src/vnet/tcp/tcp.h4
-rw-r--r--src/vnet/tcp/tcp_output.c37
-rw-r--r--src/vnet/udp/udp.c44
6 files changed, 83 insertions, 22 deletions
diff --git a/src/vnet/session/session.h b/src/vnet/session/session.h
index e549da588e9..9d6c945bb4d 100644
--- a/src/vnet/session/session.h
+++ b/src/vnet/session/session.h
@@ -59,6 +59,7 @@ typedef struct session_tx_context_
/** Vector of tx buffer free lists */
u32 *tx_buffers;
+ vlib_buffer_t **transport_pending_bufs;
} session_tx_context_t;
typedef struct session_evt_elt
diff --git a/src/vnet/session/session_node.c b/src/vnet/session/session_node.c
index bebabd3d68e..403c28f28ce 100644
--- a/src/vnet/session/session_node.c
+++ b/src/vnet/session/session_node.c
@@ -1319,6 +1319,8 @@ session_tx_fifo_read_and_snd_i (session_worker_t * wrk,
ctx->left_to_snd = ctx->max_len_to_snd;
n_left = ctx->n_segs_per_evt;
+ vec_validate (ctx->transport_pending_bufs, n_left);
+
while (n_left >= 4)
{
vlib_buffer_t *b0, *b1;
@@ -1340,9 +1342,8 @@ session_tx_fifo_read_and_snd_i (session_worker_t * wrk,
session_tx_fill_buffer (vm, ctx, b0, &n_bufs, peek_data);
session_tx_fill_buffer (vm, ctx, b1, &n_bufs, peek_data);
- ctx->transport_vft->push_header (ctx->tc, b0);
- ctx->transport_vft->push_header (ctx->tc, b1);
-
+ ctx->transport_pending_bufs[ctx->n_segs_per_evt - n_left] = b0;
+ ctx->transport_pending_bufs[ctx->n_segs_per_evt - n_left + 1] = b1;
n_left -= 2;
vec_add1 (wrk->pending_tx_buffers, bi0);
@@ -1366,16 +1367,17 @@ session_tx_fifo_read_and_snd_i (session_worker_t * wrk,
b0 = vlib_get_buffer (vm, bi0);
session_tx_fill_buffer (vm, ctx, b0, &n_bufs, peek_data);
- /* Ask transport to push header after current_length and
- * total_length_not_including_first_buffer are updated */
- ctx->transport_vft->push_header (ctx->tc, b0);
-
+ ctx->transport_pending_bufs[ctx->n_segs_per_evt - n_left] = b0;
n_left -= 1;
vec_add1 (wrk->pending_tx_buffers, bi0);
vec_add1 (wrk->pending_tx_nexts, next_index);
}
+ /* Ask transport to push headers */
+ ctx->transport_vft->push_header (ctx->tc, ctx->transport_pending_bufs,
+ ctx->n_segs_per_evt);
+
if (PREDICT_FALSE ((n_trace = vlib_get_trace_count (vm, node)) > 0))
session_tx_trace_frame (vm, node, next_index, wrk->pending_tx_buffers,
ctx->n_segs_per_evt, ctx->s, n_trace);
diff --git a/src/vnet/session/transport.h b/src/vnet/session/transport.h
index 549f17957cc..4edc281ff9c 100644
--- a/src/vnet/session/transport.h
+++ b/src/vnet/session/transport.h
@@ -85,7 +85,8 @@ typedef struct _transport_proto_vft
* Transmission
*/
- u32 (*push_header) (transport_connection_t * tconn, vlib_buffer_t * b);
+ u32 (*push_header) (transport_connection_t *tconn, vlib_buffer_t **b,
+ u32 n_bufs);
int (*send_params) (transport_connection_t * tconn,
transport_send_params_t *sp);
void (*update_time) (f64 time_now, u8 thread_index);
diff --git a/src/vnet/tcp/tcp.h b/src/vnet/tcp/tcp.h
index 710561fb24a..c5dd3172302 100644
--- a/src/vnet/tcp/tcp.h
+++ b/src/vnet/tcp/tcp.h
@@ -313,8 +313,8 @@ u32 tcp_snd_space (tcp_connection_t * tc);
int tcp_fastrecovery_prr_snd_space (tcp_connection_t * tc);
void tcp_reschedule (tcp_connection_t * tc);
fib_node_index_t tcp_lookup_rmt_in_fib (tcp_connection_t * tc);
-u32 tcp_session_push_header (transport_connection_t * tconn,
- vlib_buffer_t * b);
+u32 tcp_session_push_header (transport_connection_t *tconn, vlib_buffer_t **b,
+ u32 n_bufs);
int tcp_session_custom_tx (void *conn, transport_send_params_t * sp);
void tcp_connection_timers_init (tcp_connection_t * tc);
diff --git a/src/vnet/tcp/tcp_output.c b/src/vnet/tcp/tcp_output.c
index 55fa6d1b5d8..88cd91330b0 100644
--- a/src/vnet/tcp/tcp_output.c
+++ b/src/vnet/tcp/tcp_output.c
@@ -963,11 +963,9 @@ tcp_buffer_len (vlib_buffer_t * b)
return data_len;
}
-u32
-tcp_session_push_header (transport_connection_t * tconn, vlib_buffer_t * b)
+always_inline u32
+tcp_push_one_header (tcp_connection_t *tc, vlib_buffer_t *b)
{
- tcp_connection_t *tc = (tcp_connection_t *) tconn;
-
if (tc->cfg_flags & TCP_CFG_F_RATE_SAMPLE)
tcp_bt_track_tx (tc, tcp_buffer_len (b));
@@ -975,6 +973,37 @@ tcp_session_push_header (transport_connection_t * tconn, vlib_buffer_t * b)
/* update_snd_nxt */ 1);
tcp_validate_txf_size (tc, tc->snd_nxt - tc->snd_una);
+ return 0;
+}
+
+u32
+tcp_session_push_header (transport_connection_t *tconn, vlib_buffer_t **bs,
+ u32 n_bufs)
+{
+ tcp_connection_t *tc = (tcp_connection_t *) tconn;
+
+ while (n_bufs >= 4)
+ {
+ vlib_prefetch_buffer_header (bs[2], STORE);
+ vlib_prefetch_buffer_header (bs[3], STORE);
+
+ tcp_push_one_header (tc, bs[0]);
+ tcp_push_one_header (tc, bs[1]);
+
+ n_bufs -= 2;
+ bs += 2;
+ }
+ while (n_bufs)
+ {
+ if (n_bufs > 1)
+ vlib_prefetch_buffer_header (bs[1], STORE);
+
+ tcp_push_one_header (tc, bs[0]);
+
+ n_bufs -= 1;
+ bs += 1;
+ }
+
/* If not tracking an ACK, start tracking */
if (tc->rtt_ts == 0 && !tcp_in_cong_recovery (tc))
{
diff --git a/src/vnet/udp/udp.c b/src/vnet/udp/udp.c
index 260ea9b6287..5f73e3968c0 100644
--- a/src/vnet/udp/udp.c
+++ b/src/vnet/udp/udp.c
@@ -236,16 +236,11 @@ udp_session_get_listener (u32 listener_index)
return &us->connection;
}
-static u32
-udp_push_header (transport_connection_t * tc, vlib_buffer_t * b)
+always_inline u32
+udp_push_one_header (vlib_main_t *vm, udp_connection_t *uc, vlib_buffer_t *b)
{
- udp_connection_t *uc;
- vlib_main_t *vm = vlib_get_main ();
-
- uc = udp_connection_from_transport (tc);
-
vlib_buffer_push_udp (b, uc->c_lcl_port, uc->c_rmt_port, 1);
- if (tc->is_ip4)
+ if (uc->c_is_ip4)
vlib_buffer_push_ip4_custom (vm, b, &uc->c_lcl_ip4, &uc->c_rmt_ip4,
IP_PROTOCOL_UDP, 1 /* csum offload */,
0 /* is_df */, uc->c_dscp);
@@ -256,6 +251,39 @@ udp_push_header (transport_connection_t * tc, vlib_buffer_t * b)
vnet_buffer (b)->sw_if_index[VLIB_TX] = uc->c_fib_index;
b->flags |= VNET_BUFFER_F_LOCALLY_ORIGINATED;
+ return 0;
+}
+
+static u32
+udp_push_header (transport_connection_t *tc, vlib_buffer_t **bs, u32 n_bufs)
+{
+ vlib_main_t *vm = vlib_get_main ();
+ udp_connection_t *uc;
+
+ uc = udp_connection_from_transport (tc);
+
+ while (n_bufs >= 4)
+ {
+ vlib_prefetch_buffer_header (bs[2], STORE);
+ vlib_prefetch_buffer_header (bs[3], STORE);
+
+ udp_push_one_header (vm, uc, bs[0]);
+ udp_push_one_header (vm, uc, bs[1]);
+
+ n_bufs -= 2;
+ bs += 2;
+ }
+ while (n_bufs)
+ {
+ if (n_bufs > 1)
+ vlib_prefetch_buffer_header (bs[1], STORE);
+
+ udp_push_one_header (vm, uc, bs[0]);
+
+ n_bufs -= 1;
+ bs += 1;
+ }
+
if (PREDICT_FALSE (uc->flags & UDP_CONN_F_CLOSING))
{
if (!transport_max_tx_dequeue (&uc->connection))