FD.io VPP
v20.05.1-5-g09f167997
Vector Packet Processing
|
Go to the source code of this file.
Functions | |
static svm_msg_q_ring_t * | svm_msg_q_ring_inline (svm_msg_q_t *mq, u32 ring_index) |
svm_msg_q_ring_t * | svm_msg_q_ring (svm_msg_q_t *mq, u32 ring_index) |
Get message queue ring. More... | |
static void * | svm_msg_q_ring_data (svm_msg_q_ring_t *ring, u32 elt_index) |
svm_msg_q_t * | svm_msg_q_alloc (svm_msg_q_cfg_t *cfg) |
Allocate message queue. More... | |
void | svm_msg_q_free (svm_msg_q_t *mq) |
Free message queue. More... | |
svm_msg_q_msg_t | svm_msg_q_alloc_msg_w_ring (svm_msg_q_t *mq, u32 ring_index) |
Allocate message buffer on ring. More... | |
int | svm_msg_q_lock_and_alloc_msg_w_ring (svm_msg_q_t *mq, u32 ring_index, u8 noblock, svm_msg_q_msg_t *msg) |
Lock message queue and allocate message buffer on ring. More... | |
svm_msg_q_msg_t | svm_msg_q_alloc_msg (svm_msg_q_t *mq, u32 nbytes) |
Allocate message buffer. More... | |
void * | svm_msg_q_msg_data (svm_msg_q_t *mq, svm_msg_q_msg_t *msg) |
Get data for message in queue. More... | |
void | svm_msg_q_free_msg (svm_msg_q_t *mq, svm_msg_q_msg_t *msg) |
Free message buffer. More... | |
static int | svm_msq_q_msg_is_valid (svm_msg_q_t *mq, svm_msg_q_msg_t *msg) |
int | svm_msg_q_add (svm_msg_q_t *mq, svm_msg_q_msg_t *msg, int nowait) |
Producer enqueue one message to queue. More... | |
void | svm_msg_q_add_and_unlock (svm_msg_q_t *mq, svm_msg_q_msg_t *msg) |
Producer enqueue one message to queue with mutex held. More... | |
int | svm_msg_q_sub (svm_msg_q_t *mq, svm_msg_q_msg_t *msg, svm_q_conditional_wait_t cond, u32 time) |
Consumer dequeue one message from queue. More... | |
void | svm_msg_q_sub_w_lock (svm_msg_q_t *mq, svm_msg_q_msg_t *msg) |
Consumer dequeue one message from queue with mutex held. More... | |
void | svm_msg_q_set_consumer_eventfd (svm_msg_q_t *mq, int fd) |
Set event fd for queue consumer. More... | |
void | svm_msg_q_set_producer_eventfd (svm_msg_q_t *mq, int fd) |
Set event fd for queue producer. More... | |
int | svm_msg_q_alloc_consumer_eventfd (svm_msg_q_t *mq) |
Allocate event fd for queue consumer. More... | |
int | svm_msg_q_alloc_producer_eventfd (svm_msg_q_t *mq) |
Allocate event fd for queue consumer. More... | |
u8 * | format_svm_msg_q (u8 *s, va_list *args) |
Format message queue, shows msg count for each ring. More... | |
Format message queue, shows msg count for each ring.
Definition at line 276 of file message_queue.c.
int svm_msg_q_add | ( | svm_msg_q_t * | mq, |
svm_msg_q_msg_t * | msg, | ||
int | nowait | ||
) |
Producer enqueue one message to queue.
Prior to calling this, the producer should've obtained a message buffer from one of the rings by calling svm_msg_q_alloc_msg.
mq | message queue |
msg | message (pointer to ring position) to be enqueued |
nowait | flag to indicate if request is blocking or not |
Definition at line 216 of file message_queue.c.
void svm_msg_q_add_and_unlock | ( | svm_msg_q_t * | mq, |
svm_msg_q_msg_t * | msg | ||
) |
Producer enqueue one message to queue with mutex held.
Prior to calling this, the producer should've obtained a message buffer from one of the rings by calling svm_msg_q_alloc_msg. It assumes the queue mutex is held.
mq | message queue |
msg | message (pointer to ring position) to be enqueued |
Definition at line 223 of file message_queue.c.
svm_msg_q_t* svm_msg_q_alloc | ( | svm_msg_q_cfg_t * | cfg | ) |
Allocate message queue.
Allocates a message queue on the heap. Based on the configuration options, apart from the message queue this also allocates (one or multiple) shared-memory rings for the messages.
cfg | configuration options: queue len, consumer pid, ring configs |
Definition at line 41 of file message_queue.c.
int svm_msg_q_alloc_consumer_eventfd | ( | svm_msg_q_t * | mq | ) |
Allocate event fd for queue consumer.
Definition at line 256 of file message_queue.c.
svm_msg_q_msg_t svm_msg_q_alloc_msg | ( | svm_msg_q_t * | mq, |
u32 | nbytes | ||
) |
Allocate message buffer.
Message is allocated on the first available ring capable of holding the requested number of bytes.
mq | message queue |
nbytes | number of bytes needed for message |
Definition at line 144 of file message_queue.c.
svm_msg_q_msg_t svm_msg_q_alloc_msg_w_ring | ( | svm_msg_q_t * | mq, |
u32 | ring_index | ||
) |
Allocate message buffer on ring.
Message is allocated, on requested ring. The caller MUST check that the ring is not full.
mq | message queue |
ring_index | ring on which the allocation should occur |
Definition at line 103 of file message_queue.c.
int svm_msg_q_alloc_producer_eventfd | ( | svm_msg_q_t * | mq | ) |
Allocate event fd for queue consumer.
Definition at line 266 of file message_queue.c.
void svm_msg_q_free | ( | svm_msg_q_t * | mq | ) |
Free message queue.
mq | message queue to be freed |
Definition at line 96 of file message_queue.c.
void svm_msg_q_free_msg | ( | svm_msg_q_t * | mq, |
svm_msg_q_msg_t * | msg | ||
) |
Free message buffer.
Marks message buffer on ring as free.
mq | message queue |
msg | message to be freed |
Definition at line 170 of file message_queue.c.
int svm_msg_q_lock_and_alloc_msg_w_ring | ( | svm_msg_q_t * | mq, |
u32 | ring_index, | ||
u8 | noblock, | ||
svm_msg_q_msg_t * | msg | ||
) |
Lock message queue and allocate message buffer on ring.
This should be used when multiple writers/readers are expected to compete for the rings/queue. Message should be enqueued by calling svm_msg_q_add_w_lock and the caller MUST unlock the queue once the message in enqueued.
mq | message queue |
ring_index | ring on which the allocation should occur |
noblock | flag that indicates if request should block |
msg | pointer to message to be filled in |
Definition at line 117 of file message_queue.c.
void* svm_msg_q_msg_data | ( | svm_msg_q_t * | mq, |
svm_msg_q_msg_t * | msg | ||
) |
Get data for message in queue.
mq | message queue |
msg | message for which the data is requested |
Definition at line 163 of file message_queue.c.
svm_msg_q_ring_t* svm_msg_q_ring | ( | svm_msg_q_t * | mq, |
u32 | ring_index | ||
) |
Get message queue ring.
mq | message queue |
ring_index | index of ring |
Definition at line 28 of file message_queue.c.
|
inlinestatic |
|
inlinestatic |
void svm_msg_q_set_consumer_eventfd | ( | svm_msg_q_t * | mq, |
int | fd | ||
) |
Set event fd for queue consumer.
If set, queue will exclusively use eventfds for signaling. Moreover, afterwards, the queue should only be used in non-blocking mode. Waiting for events should be done externally using something like epoll.
mq | message queue |
fd | consumer eventfd |
Definition at line 244 of file message_queue.c.
void svm_msg_q_set_producer_eventfd | ( | svm_msg_q_t * | mq, |
int | fd | ||
) |
Set event fd for queue producer.
If set, queue will exclusively use eventfds for signaling. Moreover, afterwards, the queue should only be used in non-blocking mode. Waiting for events should be done externally using something like epoll.
mq | message queue |
fd | producer eventfd |
Definition at line 250 of file message_queue.c.
int svm_msg_q_sub | ( | svm_msg_q_t * | mq, |
svm_msg_q_msg_t * | msg, | ||
svm_q_conditional_wait_t | cond, | ||
u32 | time | ||
) |
Consumer dequeue one message from queue.
This returns the message pointing to the data in the message rings. The consumer is expected to call svm_msg_q_free_msg once it finishes processing/copies the message data.
mq | message queue |
msg | pointer to structure where message is to be received |
cond | flag that indicates if request should block or not |
time | time to wait if condition it SVM_Q_TIMEDWAIT |
Definition at line 231 of file message_queue.c.
void svm_msg_q_sub_w_lock | ( | svm_msg_q_t * | mq, |
svm_msg_q_msg_t * | msg | ||
) |
Consumer dequeue one message from queue with mutex held.
Returns the message pointing to the data in the message rings under the assumption that the message queue lock is already held. The consumer is expected to call svm_msg_q_free_msg once it finishes processing/copies the message data.
mq | message queue |
msg | pointer to structure where message is to be received |
Definition at line 238 of file message_queue.c.
|
static |