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authorFlorin Coras <fcoras@cisco.com>2018-11-26 17:01:36 -0800
committerDamjan Marion <dmarion@me.com>2018-11-29 11:27:18 +0000
commit47c40e2d944c9a29677d0542103207ba8372b66a (patch)
treee43cf5361213d119df53fb16c15cf0dca550f2d4 /src/vcl/vcl_private.h
parent743ee3e12531ec3c6ba2e2add694dde3361b0e03 (diff)
vcl: basic support for apps that fork
- intercept fork and register a new worker with vpp - share sessions between parent and forked child - keep binary api state per worker Change-Id: Ib177517d661724fa042bd2d98d18e777056352a2 Signed-off-by: Florin Coras <fcoras@cisco.com>
Diffstat (limited to 'src/vcl/vcl_private.h')
-rw-r--r--src/vcl/vcl_private.h38
1 files changed, 29 insertions, 9 deletions
diff --git a/src/vcl/vcl_private.h b/src/vcl/vcl_private.h
index 0204bd5493e..0420322d3f4 100644
--- a/src/vcl/vcl_private.h
+++ b/src/vcl/vcl_private.h
@@ -136,6 +136,12 @@ do { \
#define VCL_SESS_ATTR_TEST(ATTR, VAL) \
((ATTR) & (1 << (VAL)) ? 1 : 0)
+typedef struct vcl_shared_session_
+{
+ u32 ss_index;
+ u32 *workers;
+} vcl_shared_session_t;
+
typedef struct
{
CLIB_CACHE_LINE_ALIGN_MARK (cacheline0);
@@ -161,6 +167,7 @@ typedef struct
svm_msg_q_t *our_evt_q;
u64 options[16];
vcl_session_msg_t *accept_evts_fifo;
+ u32 shared_index;
#if VCL_ELOG
elog_track_t elog_track;
#endif
@@ -225,6 +232,15 @@ typedef struct vcl_worker_
/** Worker index in vpp*/
u32 vpp_wrk_index;
+ /** API client handle */
+ u32 my_client_index;
+
+ /** State of the connection, shared between msg RX thread and main thread */
+ volatile app_state_t wrk_state;
+
+ /** VPP binary api input queue */
+ svm_queue_t *vl_input_queue;
+
/** Message queues epoll fd. Initialized only if using mqs with eventfds */
int mqs_epfd;
@@ -268,6 +284,9 @@ typedef struct vcl_worker_
/** Used also as a thread stop key buffer */
pthread_t thread_id;
+
+ /** Current pid, may be different from main_pid if forked child */
+ pid_t current_pid;
} vcl_worker_t;
typedef struct vppcom_main_t_
@@ -279,18 +298,9 @@ typedef struct vppcom_main_t_
/** Main process pid */
pid_t main_pid;
- /** Current pid, may be different from main_pid if forked child */
- pid_t current_pid;
-
/** App's index in vpp. It's used by vpp to identify the app */
u32 app_index;
- /** API client handle */
- u32 my_client_index;
-
- /** VPP binary api input queue */
- svm_queue_t *vl_input_queue;
-
/** State of the connection, shared between msg RX thread and main thread */
volatile app_state_t app_state;
@@ -302,12 +312,15 @@ typedef struct vppcom_main_t_
/** Flag indicating that a new segment is being mounted */
volatile u32 mounting_segment;
+ volatile u32 forking;
+
/** Workers */
vcl_worker_t *workers;
/** Lock to protect worker registrations */
clib_spinlock_t workers_lock;
+ vcl_shared_session_t *shared_sessions;
#ifdef VCL_ELOG
/* VPP Event-logger */
elog_main_t elog_main;
@@ -330,6 +343,7 @@ vcl_session_alloc (vcl_worker_t * wrk)
pool_get (wrk->sessions, s);
memset (s, 0, sizeof (*s));
s->session_index = s - wrk->sessions;
+ s->shared_index = ~0;
return s;
}
@@ -481,6 +495,12 @@ int vcl_mq_epoll_add_evfd (vcl_worker_t * wrk, svm_msg_q_t * mq);
int vcl_mq_epoll_del_evfd (vcl_worker_t * wrk, u32 mqc_index);
vcl_worker_t *vcl_worker_alloc_and_init (void);
+void vcl_worker_cleanup (void);
+int vcl_worker_register_with_vpp (void);
+int vcl_worker_set_bapi (void);
+void vcl_worker_share_sessions (u32 parent_wrk_index);
+int vcl_worker_unshare_session (vcl_worker_t * wrk, vcl_session_t * s);
+int vcl_session_get_refcnt (vcl_session_t * s);
static inline vcl_worker_t *
vcl_worker_get (u32 wrk_index)