libmemif: don't consume rx queue interrupt, if memif_rx_burst fails

[vpp.git] / extras / libmemif / src / memif_private.h

diff --git a/extras/libmemif/src/memif_private.h b/extras/libmemif/src/memif_private.h
index accdac3..88237dc 100644 (file)
--- a/extras/libmemif/src/memif_private.h
+++ b/extras/libmemif/src/memif_private.h
@@ -35,13 +35,14 @@
 _Static_assert (strlen (MEMIF_DEFAULT_APP_NAME) <= MEMIF_NAME_LEN,
                "MEMIF_DEFAULT_APP_NAME max length is 32");
 
-#define MEMIF_DEFAULT_SOCKET_DIR "/run/vpp"
-#define MEMIF_DEFAULT_SOCKET_FILENAME  "memif.sock"
+#define MEMIF_DEFAULT_SOCKET_PATH "/run/vpp/memif.sock"
 #define MEMIF_DEFAULT_RING_SIZE 1024
 #define MEMIF_DEFAULT_LOG2_RING_SIZE 10
 #define MEMIF_DEFAULT_RX_QUEUES 1
 #define MEMIF_DEFAULT_TX_QUEUES 1
 #define MEMIF_DEFAULT_BUFFER_SIZE 2048
+#define MEMIF_DEFAULT_RECONNECT_PERIOD_SEC 2
+#define MEMIF_DEFAULT_RECONNECT_PERIOD_NSEC 0
 
 #define MEMIF_MAX_M2S_RING             255
 #define MEMIF_MAX_S2M_RING             255
@@ -65,11 +66,20 @@ _Static_assert (strlen (MEMIF_DEFAULT_APP_NAME) <= MEMIF_NAME_LEN,
 #define DBG(...)
 #endif /* MEMIF_DBG */
 
+typedef enum
+{
+  MEMIF_SOCKET_TYPE_NONE = 0,  /* unassigned, not used by any interface */
+  MEMIF_SOCKET_TYPE_LISTENER,  /* listener socket, master interface assigned */
+  MEMIF_SOCKET_TYPE_CLIENT     /* client socket, slave interface assigned */
+} memif_socket_type_t;
+
 typedef struct
 {
-  void *shm;
+  void *addr;
   uint32_t region_size;
+  uint32_t buffer_offset;
   int fd;
+  uint8_t is_external;
 } memif_region_t;
 
 typedef struct
@@ -110,6 +120,8 @@ typedef struct
   memif_log2_ring_size_t log2_ring_size;
 } memif_conn_run_args_t;
 
+struct libmemif_main;
+
 typedef struct memif_connection
 {
   uint16_t index;
@@ -117,7 +129,6 @@ typedef struct memif_connection
   memif_conn_run_args_t run_args;
 
   int fd;
-  int listener_fd;
 
   memif_fn *write_fn, *read_fn, *error_fn;
 
@@ -132,8 +143,11 @@ typedef struct memif_connection
   uint8_t remote_name[MEMIF_NAME_LEN];
   uint8_t remote_disconnect_string[96];
 
+  uint8_t regions_num;
   memif_region_t *regions;
 
+  uint8_t rx_queues_num;
+  uint8_t tx_queues_num;
   memif_queue_t *rx_queues;
   memif_queue_t *tx_queues;
 
@@ -151,34 +165,49 @@ typedef struct
 {
   int fd;
   uint16_t use_count;
+  memif_socket_type_t type;
   uint8_t *filename;
+  /* unique database */
+  struct libmemif_main *lm;
   uint16_t interface_list_len;
+  void *private_ctx;
   memif_list_elt_t *interface_list;    /* memif master interfaces listening on this socket */
 } memif_socket_t;
 
-typedef struct
+typedef struct libmemif_main
 {
   memif_control_fd_update_t *control_fd_update;
   int timerfd;
+  int epfd;
+  int poll_cancel_fd;
   struct itimerspec arm, disarm;
   uint16_t disconn_slaves;
   uint8_t app_name[MEMIF_NAME_LEN];
 
+  void *private_ctx;
+
+  memif_socket_handle_t default_socket;
+
+  memif_add_external_region_t *add_external_region;
+  memif_get_external_region_addr_t *get_external_region_addr;
+  memif_del_external_region_t *del_external_region;
+  memif_get_external_buffer_offset_t *get_external_buffer_offset;
+
   memif_alloc_t *alloc;
+  memif_realloc_t *realloc;
   memif_free_t *free;
 
   uint16_t control_list_len;
   uint16_t interrupt_list_len;
-  uint16_t listener_list_len;
+  uint16_t socket_list_len;
   uint16_t pending_list_len;
   memif_list_elt_t *control_list;
   memif_list_elt_t *interrupt_list;
-  memif_list_elt_t *listener_list;
+  memif_list_elt_t *socket_list;
   memif_list_elt_t *pending_list;
 } libmemif_main_t;
 
 extern libmemif_main_t libmemif_main;
-extern int memif_epfd;
 
 /* main.c */
 
@@ -193,7 +222,7 @@ int memif_disconnect_internal (memif_connection_t * c);
 /* map errno to memif error code */
 int memif_syscall_error_handler (int err_code);
 
-int add_list_elt (memif_list_elt_t * e, memif_list_elt_t ** list,
+int add_list_elt (libmemif_main_t *lm, memif_list_elt_t * e, memif_list_elt_t ** list,
                  uint16_t * len);
 
 int get_list_elt (memif_list_elt_t ** e, memif_list_elt_t * list,
@@ -201,6 +230,8 @@ int get_list_elt (memif_list_elt_t ** e, memif_list_elt_t * list,
 
 int free_list_elt (memif_list_elt_t * list, uint16_t len, int key);
 
+libmemif_main_t *get_libmemif_main (memif_socket_t * ms);
+
 #ifndef __NR_memfd_create
 #if defined __x86_64__
 #define __NR_memfd_create 319
@@ -225,7 +256,7 @@ static inline void *
 memif_get_buffer (memif_connection_t * conn, memif_ring_t * ring,
                  uint16_t index)
 {
-  return (conn->regions[ring->desc[index].region].shm +
+  return (conn->regions[ring->desc[index].region].addr +
          ring->desc[index].offset);
 }