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authorFlorin Coras <fcoras@cisco.com>2018-08-02 10:45:44 -0700
committerDave Barach <openvpp@barachs.net>2018-08-10 20:26:24 +0000
commit993683150202254c6ba8dd43e087a7229edd5d4c (patch)
tree141ce2cdfe546bfe2ad46e66ac9569a33a895072 /src/vcl/vcl_private.h
parentf46663c65b0238311af93fcfa3030eefdb56e299 (diff)
vcl: support for eventfd mq signaling
- support eventfd based mq signaling. Based on configuration, vcl epoll/select can use either condvars or epoll on mq eventfds. - add vcl support for memfd segments - vpp explicitly registers cut-through segments with apps/vcl - if using eventfd, make ldp allow one call to libc_epoll_create. Needed for the message queue epfd - update svm_queue_t to allow blocking calls with eventfd signaling. Change-Id: I064151ac370bbe29bb16c968bf4e3659c8286bea Signed-off-by: Florin Coras <fcoras@cisco.com>
Diffstat (limited to 'src/vcl/vcl_private.h')
-rw-r--r--src/vcl/vcl_private.h63
1 files changed, 62 insertions, 1 deletions
diff --git a/src/vcl/vcl_private.h b/src/vcl/vcl_private.h
index af58cdc3ac9..0506355b83c 100644
--- a/src/vcl/vcl_private.h
+++ b/src/vcl/vcl_private.h
@@ -141,7 +141,6 @@ typedef struct
vppcom_epoll_t vep;
int libc_epfd;
svm_msg_q_t *our_evt_q;
- u32 ct_registration;
u64 options[16];
vce_event_handler_reg_t *poll_reg;
vcl_session_msg_t *accept_evts_fifo;
@@ -168,12 +167,14 @@ typedef struct vppcom_cfg_t_
u8 app_scope_global;
u8 *namespace_id;
u64 namespace_secret;
+ u8 use_mq_eventfd;
f64 app_timeout;
f64 session_timeout;
f64 accept_timeout;
u32 event_ring_size;
char *event_log_path;
u8 *vpp_api_filename;
+ u8 *vpp_api_socket_name;
} vppcom_cfg_t;
void vppcom_cfg (vppcom_cfg_t * vcl_cfg);
@@ -181,9 +182,18 @@ void vppcom_cfg (vppcom_cfg_t * vcl_cfg);
typedef struct vcl_cut_through_registration_
{
svm_msg_q_t *mq;
+ svm_msg_q_t *peer_mq;
u32 sid;
+ u32 epoll_evt_conn_index; /*< mq evt connection index part of
+ the mqs evtfd epoll (if used) */
} vcl_cut_through_registration_t;
+typedef struct vcl_mq_evt_conn_
+{
+ svm_msg_q_t *mq;
+ int mq_fd;
+} vcl_mq_evt_conn_t;
+
typedef struct vppcom_main_t_
{
u8 init;
@@ -203,6 +213,15 @@ typedef struct vppcom_main_t_
clib_spinlock_t sessions_lockp;
vcl_session_t *sessions;
+ /** Message queues epoll fd. Initialized only if using mqs with eventfds */
+ int mqs_epfd;
+
+ /** Pool of event message queue event connections */
+ vcl_mq_evt_conn_t *mq_evt_conns;
+
+ /** Per worker buffer for receiving mq epoll events */
+ struct epoll_event *mq_events;
+
/* Hash table for disconnect processing */
uword *session_index_by_vpp_handles;
@@ -214,6 +233,8 @@ typedef struct vppcom_main_t_
/* Our event queue */
svm_msg_q_t *app_event_queue;
+ svm_msg_q_t **vpp_event_queues;
+
/* unique segment name counter */
u32 unique_segment_index;
@@ -237,6 +258,14 @@ typedef struct vppcom_main_t_
/** Pool of cut through registrations */
vcl_cut_through_registration_t *cut_through_registrations;
+ /** Lock for accessing ct registration pool */
+ clib_spinlock_t ct_registration_lock;
+
+ /** Cut-through registration by mq address hash table */
+ uword *ct_registration_by_mq;
+
+ svm_msg_q_msg_t *mq_msg_vector;
+
/** Flag indicating that a new segment is being mounted */
volatile u32 mounting_segment;
@@ -285,6 +314,21 @@ do { \
#define VCL_INVALID_SESSION_INDEX ((u32)~0)
static inline vcl_session_t *
+vcl_session_alloc (void)
+{
+ vcl_session_t *s;
+ pool_get (vcm->sessions, s);
+ memset (s, 0, sizeof (*s));
+ return s;
+}
+
+static inline void
+vcl_session_free (vcl_session_t * s)
+{
+ pool_put (vcm->sessions, s);
+}
+
+static inline vcl_session_t *
vcl_session_get (u32 session_index)
{
if (pool_is_free_index (vcm->sessions, session_index))
@@ -375,6 +419,23 @@ vppcom_session_table_lookup_listener (u64 listener_handle)
const char *vppcom_session_state_str (session_state_t state);
/*
+ * Helpers
+ */
+vcl_cut_through_registration_t *vcl_ct_registration_lock_and_alloc (void);
+void vcl_ct_registration_del (vcl_cut_through_registration_t * ctr);
+u32 vcl_ct_registration_index (vcl_cut_through_registration_t * ctr);
+void vcl_ct_registration_unlock (void);
+vcl_cut_through_registration_t *vcl_ct_registration_get (u32 ctr_index);
+vcl_cut_through_registration_t *vcl_ct_registration_lock_and_lookup (uword);
+void vcl_ct_registration_lookup_add (uword mq_addr, u32 ctr_index);
+void vcl_ct_registration_lookup_del (uword mq_addr);
+vcl_mq_evt_conn_t *vcl_mq_evt_conn_alloc (void);
+u32 vcl_mq_evt_conn_index (vcl_mq_evt_conn_t * mqc);
+vcl_mq_evt_conn_t *vcl_mq_evt_conn_get (u32 mq_conn_idx);
+int vcl_mq_epoll_add_evfd (svm_msg_q_t * mq);
+int vcl_mq_epoll_del_evfd (u32 mqc_index);
+
+/*
* VCL Binary API
*/
int vppcom_connect_to_vpp (char *app_name);