Add packet headers in UDPC fifos
This change adds packet headers for each packet in a UDPC connection. This
changes the semantic of UDPC from an unreliable, unordered stream of bytes to an
unreliable, unordered sequence of packets.
Change-Id: I831e43903870a5720d26daa6e971299d03b208d7
Signed-off-by: Aloys Augustin <aloaugus@cisco.com>
diff --git a/src/vnet/udp/udp_input.c b/src/vnet/udp/udp_input.c
index 52c29d7..591dc53 100644
--- a/src/vnet/udp/udp_input.c
+++ b/src/vnet/udp/udp_input.c
@@ -227,45 +227,30 @@
goto trace0;
}
- if (!uc0->is_connected)
- {
- if (svm_fifo_max_enqueue_prod (s0->rx_fifo)
- < b0->current_length + sizeof (session_dgram_hdr_t))
- {
- error0 = UDP_ERROR_FIFO_FULL;
- goto trace0;
- }
- hdr0.data_length = b0->current_length;
- hdr0.data_offset = 0;
- ip_set (&hdr0.lcl_ip, lcl_addr, is_ip4);
- ip_set (&hdr0.rmt_ip, rmt_addr, is_ip4);
- hdr0.lcl_port = udp0->dst_port;
- hdr0.rmt_port = udp0->src_port;
- hdr0.is_ip4 = is_ip4;
- clib_spinlock_lock (&uc0->rx_lock);
- wrote0 = session_enqueue_dgram_connection (s0, &hdr0, b0,
- TRANSPORT_PROTO_UDP,
- 1 /* queue evt */ );
- clib_spinlock_unlock (&uc0->rx_lock);
- ASSERT (wrote0 > 0);
-
- if (s0->session_state != SESSION_STATE_LISTENING)
- session_pool_remove_peeker (s0->thread_index);
- }
- else
+ if (svm_fifo_max_enqueue_prod (s0->rx_fifo)
+ < b0->current_length + sizeof (session_dgram_hdr_t))
{
- if (svm_fifo_max_enqueue_prod (s0->rx_fifo) <
- b0->current_length)
- {
- error0 = UDP_ERROR_FIFO_FULL;
- goto trace0;
- }
- wrote0 = session_enqueue_stream_connection (tc0, b0, 0,
- 1 /* queue evt */ ,
- 1 /* in order */ );
- ASSERT (wrote0 > 0);
+ error0 = UDP_ERROR_FIFO_FULL;
+ goto trace0;
}
+ hdr0.data_length = b0->current_length;
+ hdr0.data_offset = 0;
+ ip_set (&hdr0.lcl_ip, lcl_addr, is_ip4);
+ ip_set (&hdr0.rmt_ip, rmt_addr, is_ip4);
+ hdr0.lcl_port = udp0->dst_port;
+ hdr0.rmt_port = udp0->src_port;
+ hdr0.is_ip4 = is_ip4;
+
+ clib_spinlock_lock (&uc0->rx_lock);
+ wrote0 = session_enqueue_dgram_connection (s0, &hdr0, b0,
+ TRANSPORT_PROTO_UDP,
+ 1 /* queue evt */ );
+ clib_spinlock_unlock (&uc0->rx_lock);
+ ASSERT (wrote0 > 0);
+
+ if (s0->session_state != SESSION_STATE_LISTENING)
+ session_pool_remove_peeker (s0->thread_index);
trace0: