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-rw-r--r--src/vnet/session/session_node.c41
-rw-r--r--src/vnet/tcp/builtin_server.c2
-rw-r--r--src/vnet/tcp/tcp_output.c31
3 files changed, 40 insertions, 34 deletions
diff --git a/src/vnet/session/session_node.c b/src/vnet/session/session_node.c
index 9c5b17d98e6..fac2b852880 100644
--- a/src/vnet/session/session_node.c
+++ b/src/vnet/session/session_node.c
@@ -139,7 +139,7 @@ session_tx_fifo_read_and_snd_i (vlib_main_t * vm, vlib_node_runtime_t * node,
{
u32 n_trace = vlib_get_trace_count (vm, node);
u32 left_to_snd0, max_len_to_snd0, len_to_deq0, snd_space0;
- u32 n_bufs_per_evt, n_frames_per_evt;
+ u32 n_bufs_per_evt, n_frames_per_evt, n_bufs_per_frame;
transport_connection_t *tc0;
transport_proto_vft_t *transport_vft;
u32 next_index, next0, *to_next, n_left_to_next, bi0;
@@ -148,7 +148,7 @@ session_tx_fifo_read_and_snd_i (vlib_main_t * vm, vlib_node_runtime_t * node,
u16 snd_mss0, n_bufs_per_seg, n_bufs;
u8 *data0;
int i, n_bytes_read;
- u32 n_bytes_per_buf, deq_per_buf;
+ u32 n_bytes_per_buf, deq_per_buf, deq_per_first_buf;
u32 buffers_allocated, buffers_allocated_this_call;
next_index = next0 = session_type_to_next[s0->session_type];
@@ -198,51 +198,56 @@ session_tx_fifo_read_and_snd_i (vlib_main_t * vm, vlib_node_runtime_t * node,
n_bytes_per_buf = vlib_buffer_free_list_buffer_size
(vm, VLIB_BUFFER_DEFAULT_FREE_LIST_INDEX);
+ ASSERT (n_bytes_per_buf > MAX_HDRS_LEN);
n_bytes_per_seg = MAX_HDRS_LEN + snd_mss0;
n_bufs_per_seg = ceil ((double) n_bytes_per_seg / n_bytes_per_buf);
- n_bufs_per_evt = (ceil ((double) max_len_to_snd0 / n_bytes_per_seg))
- * n_bufs_per_seg;
+ n_bufs_per_evt = ceil ((double) max_len_to_snd0 / n_bytes_per_seg);
n_frames_per_evt = ceil ((double) n_bufs_per_evt / VLIB_FRAME_SIZE);
+ n_bufs_per_frame = n_bufs_per_seg * VLIB_FRAME_SIZE;
deq_per_buf = clib_min (snd_mss0, n_bytes_per_buf);
+ deq_per_first_buf = clib_min (snd_mss0, n_bytes_per_buf - MAX_HDRS_LEN);
n_bufs = vec_len (smm->tx_buffers[thread_index]);
left_to_snd0 = max_len_to_snd0;
for (i = 0; i < n_frames_per_evt; i++)
{
/* Make sure we have at least one full frame of buffers ready */
- if (PREDICT_FALSE (n_bufs < VLIB_FRAME_SIZE))
+ if (PREDICT_FALSE (n_bufs < n_bufs_per_frame))
{
vec_validate (smm->tx_buffers[thread_index],
- n_bufs + 2 * VLIB_FRAME_SIZE - 1);
-
+ n_bufs + n_bufs_per_frame - 1);
buffers_allocated = 0;
do
{
- buffers_allocated_this_call =
- vlib_buffer_alloc
- (vm,
- &smm->tx_buffers[thread_index][n_bufs + buffers_allocated],
- 2 * VLIB_FRAME_SIZE - buffers_allocated);
+ buffers_allocated_this_call = vlib_buffer_alloc (vm,
+ &smm->tx_buffers
+ [thread_index]
+ [n_bufs +
+ buffers_allocated],
+ n_bufs_per_frame
+ -
+ buffers_allocated);
buffers_allocated += buffers_allocated_this_call;
}
while (buffers_allocated_this_call > 0
- && ((buffers_allocated + n_bufs < VLIB_FRAME_SIZE)));
+ && ((buffers_allocated + n_bufs < n_bufs_per_frame)));
n_bufs += buffers_allocated;
_vec_len (smm->tx_buffers[thread_index]) = n_bufs;
- if (PREDICT_FALSE (n_bufs < VLIB_FRAME_SIZE))
+ if (PREDICT_FALSE (n_bufs < n_bufs_per_frame))
{
vec_add1 (smm->pending_event_vector[thread_index], *e0);
return -1;
}
+ ASSERT (n_bufs >= n_bufs_per_frame);
}
/* Allow enqueuing of a new event */
svm_fifo_unset_event (s0->server_tx_fifo);
vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
- while (left_to_snd0 && n_left_to_next >= n_bufs_per_seg)
+ while (left_to_snd0 && n_left_to_next)
{
/*
* Handle first buffer in chain separately
@@ -251,7 +256,6 @@ session_tx_fifo_read_and_snd_i (vlib_main_t * vm, vlib_node_runtime_t * node,
/* Get free buffer */
ASSERT (n_bufs >= 1);
bi0 = smm->tx_buffers[thread_index][--n_bufs];
- ASSERT (bi0);
_vec_len (smm->tx_buffers[thread_index]) = n_bufs;
/* usual speculation, or the enqueue_x1 macro will barf */
@@ -266,8 +270,7 @@ session_tx_fifo_read_and_snd_i (vlib_main_t * vm, vlib_node_runtime_t * node,
b0->current_data = 0;
b0->total_length_not_including_first_buffer = 0;
- len_to_deq0 = clib_min (left_to_snd0, deq_per_buf);
-
+ len_to_deq0 = clib_min (left_to_snd0, deq_per_first_buf);
data0 = vlib_buffer_make_headroom (b0, MAX_HDRS_LEN);
if (peek_data)
{
@@ -294,7 +297,7 @@ session_tx_fifo_read_and_snd_i (vlib_main_t * vm, vlib_node_runtime_t * node,
/*
* Fill in the remaining buffers in the chain, if any
*/
- if (PREDICT_FALSE (n_bufs_per_seg > 1))
+ if (PREDICT_FALSE (n_bufs_per_seg > 1 && left_to_snd0))
{
u32 left_for_seg;
left_for_seg = clib_min (snd_mss0 - n_bytes_read, left_to_snd0);
diff --git a/src/vnet/tcp/builtin_server.c b/src/vnet/tcp/builtin_server.c
index 80a95565343..295c189d869 100644
--- a/src/vnet/tcp/builtin_server.c
+++ b/src/vnet/tcp/builtin_server.c
@@ -267,7 +267,7 @@ create_api_loopback (vlib_main_t * vm)
shmem_hdr = am->shmem_hdr;
bsm->vl_input_queue = shmem_hdr->vl_input_queue;
bsm->my_client_index =
- vl_api_memclnt_create_internal ("http_test_server", bsm->vl_input_queue);
+ vl_api_memclnt_create_internal ("tcp_test_server", bsm->vl_input_queue);
return 0;
}
diff --git a/src/vnet/tcp/tcp_output.c b/src/vnet/tcp/tcp_output.c
index e6a211babf6..7da0c07349d 100644
--- a/src/vnet/tcp/tcp_output.c
+++ b/src/vnet/tcp/tcp_output.c
@@ -1096,7 +1096,8 @@ tcp_prepare_retransmit_segment (tcp_connection_t * tc, u32 offset,
tcp_main_t *tm = vnet_get_tcp_main ();
vlib_main_t *vm = vlib_get_main ();
int n_bytes = 0;
- u32 start, bi, available_bytes;
+ u32 start, bi, available_bytes, seg_size;
+ u8 *data;
ASSERT (tc->state >= TCP_STATE_ESTABLISHED);
ASSERT (max_deq_bytes != 0);
@@ -1104,14 +1105,15 @@ tcp_prepare_retransmit_segment (tcp_connection_t * tc, u32 offset,
/*
* Make sure we can retransmit something
*/
- max_deq_bytes = clib_min (tc->snd_mss, max_deq_bytes);
available_bytes = stream_session_tx_fifo_max_dequeue (&tc->connection);
if (!available_bytes)
return 0;
+ max_deq_bytes = clib_min (tc->snd_mss, max_deq_bytes);
max_deq_bytes = clib_min (available_bytes, max_deq_bytes);
- start = tc->snd_una + offset;
+ seg_size = max_deq_bytes + MAX_HDRS_LEN;
/* Start is beyond snd_congestion */
+ start = tc->snd_una + offset;
if (seq_geq (start, tc->snd_congestion))
{
goto done;
@@ -1139,13 +1141,13 @@ tcp_prepare_retransmit_segment (tcp_connection_t * tc, u32 offset,
if (PREDICT_FALSE (tcp_get_free_buffer_index (tm, &bi)))
return 0;
*b = vlib_get_buffer (vm, bi);
+ data = vlib_buffer_make_headroom (*b, MAX_HDRS_LEN);
/* Easy case, buffer size greater than mss */
- if (PREDICT_TRUE (max_deq_bytes <= tm->bytes_per_buffer))
+ if (PREDICT_TRUE (seg_size <= tm->bytes_per_buffer))
{
- n_bytes = stream_session_peek_bytes (&tc->connection,
- vlib_buffer_get_current (*b),
- offset, max_deq_bytes);
+ n_bytes = stream_session_peek_bytes (&tc->connection, data, offset,
+ max_deq_bytes);
ASSERT (n_bytes == max_deq_bytes);
b[0]->current_length = n_bytes;
tcp_push_hdr_i (tc, *b, tc->state, 0);
@@ -1157,10 +1159,9 @@ tcp_prepare_retransmit_segment (tcp_connection_t * tc, u32 offset,
u32 thread_index = vlib_get_thread_index ();
u16 n_peeked, len_to_deq, available_bufs;
vlib_buffer_t *chain_b, *prev_b;
- u8 *data0;
int i;
- n_bufs_per_seg = ceil ((double) max_deq_bytes / tm->bytes_per_buffer);
+ n_bufs_per_seg = ceil ((double) seg_size / tm->bytes_per_buffer);
ASSERT (available_bytes >= max_deq_bytes);
/* Make sure we have enough buffers */
@@ -1175,9 +1176,9 @@ tcp_prepare_retransmit_segment (tcp_connection_t * tc, u32 offset,
}
}
- n_bytes = stream_session_peek_bytes (&tc->connection,
- vlib_buffer_get_current (*b),
- offset, tm->bytes_per_buffer);
+ n_bytes = stream_session_peek_bytes (&tc->connection, data, offset,
+ tm->bytes_per_buffer -
+ MAX_HDRS_LEN);
b[0]->current_length = n_bytes;
b[0]->flags |= VLIB_BUFFER_TOTAL_LENGTH_VALID;
b[0]->total_length_not_including_first_buffer = 0;
@@ -1194,8 +1195,8 @@ tcp_prepare_retransmit_segment (tcp_connection_t * tc, u32 offset,
ASSERT (chain_bi != (u32) ~ 0);
chain_b = vlib_get_buffer (vm, chain_bi);
chain_b->current_data = 0;
- data0 = vlib_buffer_get_current (chain_b);
- n_peeked = stream_session_peek_bytes (&tc->connection, data0,
+ data = vlib_buffer_get_current (chain_b);
+ n_peeked = stream_session_peek_bytes (&tc->connection, data,
n_bytes, len_to_deq);
n_bytes += n_peeked;
ASSERT (n_peeked == len_to_deq);
@@ -1215,6 +1216,8 @@ tcp_prepare_retransmit_segment (tcp_connection_t * tc, u32 offset,
}
ASSERT (n_bytes > 0);
+ ASSERT (((*b)->current_data + (*b)->current_length) <=
+ tm->bytes_per_buffer);
if (tcp_in_fastrecovery (tc))
tc->snd_rxt_bytes += n_bytes;