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authorDave Barach <dbarach@cisco.com>2017-06-26 11:35:07 -0400
committerFlorin Coras <florin.coras@gmail.com>2017-07-11 15:40:19 +0000
commit2c25a62cc1cc4937165de740a3b32d78429c72d6 (patch)
treeb860025298501460e21cf8e5722c6155f87495ec /src/vnet/session/segment_manager.c
parent8af1b2fdecc883eadfec6b91434adc6044e24cb2 (diff)
Horizontal (nSessions) scaling draft
- Data structure preallocation. - Input state machine fixes for mid-stream 3-way handshake retries. - Batch connections in the builtin_client - Multiple private fifo segment support - Fix elog simultaneous event type registration - Fix sacks when segment hole is added after highest sacked - Add "accepting" session state for sessions pending accept - Add ssvm non-recursive locking - Estimate RTT for syn-ack - Don't init fifo pointers. We're using relative offsets for ooo segments - CLI to dump individual session Change-Id: Ie0598563fd246537bafba4feed7985478ea1d415 Signed-off-by: Dave Barach <dbarach@cisco.com> Signed-off-by: Florin Coras <fcoras@cisco.com>
Diffstat (limited to 'src/vnet/session/segment_manager.c')
-rw-r--r--src/vnet/session/segment_manager.c26
1 files changed, 16 insertions, 10 deletions
diff --git a/src/vnet/session/segment_manager.c b/src/vnet/session/segment_manager.c
index dcef62615d2..262b7faab92 100644
--- a/src/vnet/session/segment_manager.c
+++ b/src/vnet/session/segment_manager.c
@@ -30,7 +30,7 @@ segment_manager_t *segment_managers = 0;
/**
* Process private segment index
*/
-u32 private_segment_index = ~0;
+u32 *private_segment_indices;
/**
* Default fifo and segment size. TODO config.
@@ -70,7 +70,8 @@ session_manager_add_segment_i (segment_manager_t * sm, u32 segment_size,
return VNET_API_ERROR_SVM_SEGMENT_CREATE_FAIL;
}
- vec_add1 (sm->segment_indices, ca->new_segment_index);
+ vec_append (sm->segment_indices, ca->new_segment_indices);
+ vec_free (ca->new_segment_indices);
return 0;
}
@@ -111,22 +112,23 @@ static void
{
svm_fifo_segment_create_args_t _a, *a = &_a;
- if (private_segment_index != ~0)
+ if (private_segment_indices)
return;
memset (a, 0, sizeof (*a));
a->segment_name = "process-private-segment";
a->segment_size = ~0;
- a->new_segment_index = ~0;
a->rx_fifo_size = props->rx_fifo_size;
a->tx_fifo_size = props->tx_fifo_size;
a->preallocated_fifo_pairs = props->preallocated_fifo_pairs;
+ a->private_segment_count = props->private_segment_count;
+ a->private_segment_size = props->private_segment_size;
if (svm_fifo_segment_create_process_private (a))
clib_warning ("Failed to create process private segment");
- private_segment_index = a->new_segment_index;
- ASSERT (private_segment_index != ~0);
+ private_segment_indices = a->new_segment_indices;
+ ASSERT (vec_len (private_segment_indices));
}
/**
@@ -156,10 +158,10 @@ segment_manager_init (segment_manager_t * sm,
}
else
{
- if (private_segment_index == ~0)
+ if (vec_len (private_segment_indices) == 0)
segment_manager_alloc_process_private_segment (properties);
- ASSERT (private_segment_index != ~0);
- vec_add1 (sm->segment_indices, private_segment_index);
+ ASSERT (vec_len (private_segment_indices));
+ vec_append (sm->segment_indices, private_segment_indices);
}
clib_spinlock_init (&sm->lockp);
@@ -320,7 +322,7 @@ again:
/* See if we're supposed to create another segment */
if (*server_rx_fifo == 0)
{
- if (sm->properties->add_segment)
+ if (sm->properties->add_segment && !sm->properties->use_private_segment)
{
if (added_a_segment)
{
@@ -379,6 +381,10 @@ segment_manager_dealloc_fifos (u32 svm_segment_index, svm_fifo_t * rx_fifo,
svm_fifo_segment_free_fifo (fifo_segment, tx_fifo,
FIFO_SEGMENT_TX_FREELIST);
+ /* Don't try to delete process-private segments */
+ if (sm->properties->private_segment_count > 0)
+ return;
+
/* Remove segment only if it holds no fifos and not the first */
if (sm->segment_indices[0] != svm_segment_index
&& !svm_fifo_segment_has_fifos (fifo_segment))