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authorFlorin Coras <fcoras@cisco.com>2017-05-24 18:03:56 -0700
committerDave Barach <openvpp@barachs.net>2017-06-09 16:47:19 +0000
commit93992a9048cb6e5dcd22de5091e72de778122627 (patch)
treef295bb870ad1614d9327828dd036fb03f60e455e /src/vnet/session/session.c
parent583dc8d3e23a780c85ebe48ea59f0338aad4df17 (diff)
Implement sack based tcp loss recovery (RFC 6675)
- refactor existing congestion control code (RFC 6582/5681). Handling of ack feedback now consists of: ack parsing, cc event detection, event handling, congestion control update - extend sack scoreboard to support sack based retransmissions - basic implementation of Eifel detection algorithm (RFC 3522) for detecting spurious retransmissions - actually initialize the per-thread frame freelist hash tables - increase worker stack size to 2mb - fix session queue node out-of-buffer handling - ensure that the local buffer cache vec_len matches reality - avoid 2x spurious event requeues when short of buffers - count out-of-buffer events - make the builtin server thread-safe - fix bihash template threading issue: need to paint -1 across uninitialized working_copy_length vector elements (via rebase from master) Change-Id: I646cb9f1add9a67d08f4a87badbcb117980ebfc4 Signed-off-by: Florin Coras <fcoras@cisco.com> Signed-off-by: Dave Barach <dbarach@cisco.com>
Diffstat (limited to 'src/vnet/session/session.c')
-rw-r--r--src/vnet/session/session.c11
1 files changed, 10 insertions, 1 deletions
diff --git a/src/vnet/session/session.c b/src/vnet/session/session.c
index 02b0cced3f7..534598d637f 100644
--- a/src/vnet/session/session.c
+++ b/src/vnet/session/session.c
@@ -551,7 +551,7 @@ u8
stream_session_no_space (transport_connection_t * tc, u32 thread_index,
u16 data_len)
{
- stream_session_t *s = stream_session_get (tc->c_index, thread_index);
+ stream_session_t *s = stream_session_get (tc->s_index, thread_index);
if (PREDICT_FALSE (s->session_state != SESSION_STATE_READY))
return 1;
@@ -563,6 +563,15 @@ stream_session_no_space (transport_connection_t * tc, u32 thread_index,
}
u32
+stream_session_tx_fifo_max_dequeue (transport_connection_t * tc)
+{
+ stream_session_t *s = stream_session_get (tc->s_index, tc->thread_index);
+ if (s->session_state != SESSION_STATE_READY)
+ return 0;
+ return svm_fifo_max_dequeue (s->server_tx_fifo);
+}
+
+int
stream_session_peek_bytes (transport_connection_t * tc, u8 * buffer,
u32 offset, u32 max_bytes)
{