session: convert evt q segment to fifo segment

Type: refactor

Signed-off-by: Florin Coras <fcoras@cisco.com>
Change-Id: I63a44e11322f6fe27255820524e022f6d710b083

3 files changed, 21 insertions, 19 deletions

diff --git a/src/vnet/session/session.c b/src/vnet/session/session.c
index 962df556de9..259e212e1a3 100644
--- a/src/vnet/session/session.c
+++ b/src/vnet/session/session.c
@@ -1505,10 +1505,10 @@ void
 session_vpp_event_queues_allocate (session_main_t * smm)
 {
   u32 evt_q_length = 2048, evt_size = sizeof (session_event_t);
-  ssvm_private_t *eqs = &smm->evt_qs_segment;
+  fifo_segment_t *eqs = &smm->evt_qs_segment;
   uword eqs_size = 64 << 20;
   pid_t vpp_pid = getpid ();
-  void *oldheap;
+  void *base;
   int i;
 
   if (smm->configured_event_queue_length)
@@ -1517,19 +1517,19 @@ session_vpp_event_queues_allocate (session_main_t * smm)
   if (smm->evt_qs_segment_size)
     eqs_size = smm->evt_qs_segment_size;
 
-  eqs->ssvm_size = eqs_size;
-  eqs->my_pid = vpp_pid;
-  eqs->name = format (0, "%s%c", "session: evt-qs-segment", 0);
+  eqs->ssvm.ssvm_size = eqs_size;
+  eqs->ssvm.my_pid = vpp_pid;
+  eqs->ssvm.name = format (0, "%s%c", "session: evt-qs-segment", 0);
   /* clib_mem_vm_map_shared consumes first page before requested_va */
-  eqs->requested_va = smm->session_baseva + clib_mem_get_page_size ();
+  eqs->ssvm.requested_va = smm->session_baseva + clib_mem_get_page_size ();
 
-  if (ssvm_server_init (eqs, SSVM_SEGMENT_MEMFD))
+  if (ssvm_server_init (&eqs->ssvm, SSVM_SEGMENT_MEMFD))
     {
       clib_warning ("failed to initialize queue segment");
       return;
     }
 
-  oldheap = ssvm_push_heap (eqs->sh);
+  fifo_segment_init (eqs);
 
   for (i = 0; i < vec_len (smm->wrk); i++)
     {
@@ -1543,15 +1543,16 @@ session_vpp_event_queues_allocate (session_main_t * smm)
       cfg->n_rings = 2;
       cfg->q_nitems = evt_q_length;
       cfg->ring_cfgs = rc;
-      smm->wrk[i].vpp_event_queue = svm_msg_q_alloc (cfg);
+
+      base = fifo_segment_alloc (eqs, svm_msg_q_size_to_alloc (cfg));
+      smm->wrk[i].vpp_event_queue = svm_msg_q_init (base, cfg);
+
       if (svm_msg_q_alloc_consumer_eventfd (smm->wrk[i].vpp_event_queue))
 	clib_warning ("eventfd returned");
     }
-
-  ssvm_pop_heap (oldheap);
 }
 
-ssvm_private_t *
+fifo_segment_t *
 session_main_get_evt_q_segment (void)
 {
   return &session_main.evt_qs_segment;
diff --git a/src/vnet/session/session.h b/src/vnet/session/session.h
index e62aea483cf..e8afcd03d69 100644
--- a/src/vnet/session/session.h
+++ b/src/vnet/session/session.h
@@ -20,7 +20,7 @@
 #include <vnet/session/session_lookup.h>
 #include <vnet/session/session_debug.h>
 #include <svm/message_queue.h>
-#include <svm/ssvm.h>
+#include <svm/fifo_segment.h>
 
 #define foreach_session_input_error                                    	\
 _(NO_SESSION, "No session drops")                                       \
@@ -143,7 +143,7 @@ typedef struct session_main_
   session_worker_t *wrk;
 
   /** Event queues memfd segment */
-  ssvm_private_t evt_qs_segment;
+  fifo_segment_t evt_qs_segment;
 
   /** Unique segment name counter */
   u32 unique_segment_name_counter;
@@ -679,7 +679,7 @@ session_add_pending_tx_buffer (u32 thread_index, u32 bi, u32 next_node)
   vec_add1 (wrk->pending_tx_nexts, next_node);
 }
 
-ssvm_private_t *session_main_get_evt_q_segment (void);
+fifo_segment_t *session_main_get_evt_q_segment (void);
 void session_node_enable_disable (u8 is_en);
 clib_error_t *vnet_session_enable_disable (vlib_main_t * vm, u8 is_en);
 
diff --git a/src/vnet/session/session_api.c b/src/vnet/session/session_api.c
index a8f92c3cc00..8fe1acf6a6e 100644
--- a/src/vnet/session/session_api.c
+++ b/src/vnet/session/session_api.c
@@ -601,8 +601,9 @@ vl_api_app_attach_t_handler (vl_api_app_attach_t * mp)
 {
   int rv = 0, fds[SESSION_N_FD_TYPE], n_fds = 0;
   vl_api_app_attach_reply_t *rmp;
-  ssvm_private_t *segp, *evt_q_segment;
+  ssvm_private_t *segp;
   vnet_app_attach_args_t _a, *a = &_a;
+  fifo_segment_t *evt_q_segment;
   u8 fd_flags = 0, ctrl_thread;
   vl_api_registration_t *reg;
   svm_msg_q_t *ctrl_mq;
@@ -645,7 +646,7 @@ vl_api_app_attach_t_handler (vl_api_app_attach_t * mp)
   if ((evt_q_segment = session_main_get_evt_q_segment ()))
     {
       fd_flags |= SESSION_FD_F_VPP_MQ_SEGMENT;
-      fds[n_fds] = evt_q_segment->fd;
+      fds[n_fds] = evt_q_segment->ssvm.fd;
       n_fds += 1;
     }
   /* Send fifo segment fd if needed */
@@ -1335,7 +1336,7 @@ session_api_attach_handler (app_namespace_t * app_ns, clib_socket_t * cs,
   int rv = 0, fds[SESSION_N_FD_TYPE], n_fds = 0;
   vnet_app_attach_args_t _a, *a = &_a;
   app_sapi_attach_reply_msg_t *rmp;
-  ssvm_private_t *evt_q_segment;
+  fifo_segment_t *evt_q_segment;
   u8 fd_flags = 0, ctrl_thread;
   app_ns_api_handle_t *handle;
   app_sapi_msg_t msg = { 0 };
@@ -1364,7 +1365,7 @@ session_api_attach_handler (app_namespace_t * app_ns, clib_socket_t * cs,
   if ((evt_q_segment = session_main_get_evt_q_segment ()))
     {
       fd_flags |= SESSION_FD_F_VPP_MQ_SEGMENT;
-      fds[n_fds] = evt_q_segment->fd;
+      fds[n_fds] = evt_q_segment->ssvm.fd;
       n_fds += 1;
     }
   /* Send fifo segment fd if needed */