X-Git-Url: https://gerrit.fd.io/r/gitweb?a=blobdiff_plain;f=src%2Fvlibmemory%2Fmemory_shared.c;h=488a302bbba3304bf84fe760831343dfd56ba899;hb=b384b543313b6b47a277c903e9d4fcd4343054fa;hp=021c54ef95397bbbe10b1baaf6a152c60d8a6618;hpb=59b2565cd91a67ced650739f36129650830211ac;p=vpp.git diff --git a/src/vlibmemory/memory_shared.c b/src/vlibmemory/memory_shared.c index 021c54ef953..488a302bbba 100644 --- a/src/vlibmemory/memory_shared.c +++ b/src/vlibmemory/memory_shared.c @@ -25,22 +25,20 @@ #include #include #include + #include #include #include +#include #include #include -#include -#include - +#include #include #define vl_typedefs #include #undef vl_typedefs -socket_main_t socket_main; - #define DEBUG_MESSAGE_BUFFER_OVERRUN 0 static inline void * @@ -49,7 +47,7 @@ vl_msg_api_alloc_internal (int nbytes, int pool, int may_return_null) int i; msgbuf_t *rv; ring_alloc_t *ap; - unix_shared_memory_queue_t *q; + svm_queue_t *q; void *oldheap; vl_shmem_hdr_t *shmem_hdr; api_main_t *am = &api_main; @@ -60,6 +58,8 @@ vl_msg_api_alloc_internal (int nbytes, int pool, int may_return_null) nbytes += 4; #endif + ASSERT (pool == 0 || vlib_get_thread_index () == 0); + if (shmem_hdr == 0) { clib_warning ("shared memory header NULL"); @@ -230,6 +230,25 @@ vl_msg_api_alloc_as_if_client_or_null (int nbytes) return vl_msg_api_alloc_internal (nbytes, 0, 1 /* may_return_null */ ); } +void * +vl_mem_api_alloc_as_if_client_w_reg (vl_api_registration_t * reg, int nbytes) +{ + api_main_t *am = &api_main; + vl_shmem_hdr_t *save_shmem_hdr = am->shmem_hdr; + svm_region_t *vlib_rp, *save_vlib_rp = am->vlib_rp; + void *msg; + + vlib_rp = am->vlib_rp = reg->vlib_rp; + am->shmem_hdr = (void *) vlib_rp->user_ctx; + + msg = vl_msg_api_alloc_internal (nbytes, 0, 0 /* may_return_null */ ); + + am->shmem_hdr = save_shmem_hdr; + am->vlib_rp = save_vlib_rp; + + return msg; +} + void vl_msg_api_free (void *a) { @@ -362,21 +381,11 @@ vl_set_api_pvt_heap_size (u64 size) am->api_pvt_heap_size = size; } -void -vl_init_shmem (svm_region_t * vlib_rp, int is_vlib, int is_private_region) +static void +vl_api_default_mem_config (vl_shmem_hdr_t * shmem_hdr) { api_main_t *am = &api_main; - vl_shmem_hdr_t *shmem_hdr = 0; u32 vlib_input_queue_length; - void *oldheap; - ASSERT (vlib_rp); - - /* $$$$ need private region config parameters */ - - oldheap = svm_push_data_heap (vlib_rp); - - vec_validate (shmem_hdr, 0); - shmem_hdr->version = VL_SHM_VERSION; /* vlib main input queue */ vlib_input_queue_length = 1024; @@ -384,14 +393,13 @@ vl_init_shmem (svm_region_t * vlib_rp, int is_vlib, int is_private_region) vlib_input_queue_length = am->vlib_input_queue_length; shmem_hdr->vl_input_queue = - unix_shared_memory_queue_init (vlib_input_queue_length, sizeof (uword), - getpid (), am->vlib_signal); + svm_queue_init (vlib_input_queue_length, sizeof (uword), + getpid (), am->vlib_signal); - /* Set up the msg ring allocator */ #define _(sz,n) \ do { \ ring_alloc_t _rp; \ - _rp.rp = unix_shared_memory_queue_init ((n), (sz), 0, 0); \ + _rp.rp = svm_queue_init ((n), (sz), 0, 0); \ _rp.size = (sz); \ _rp.nitems = n; \ _rp.hits = 0; \ @@ -405,7 +413,7 @@ vl_init_shmem (svm_region_t * vlib_rp, int is_vlib, int is_private_region) #define _(sz,n) \ do { \ ring_alloc_t _rp; \ - _rp.rp = unix_shared_memory_queue_init ((n), (sz), 0, 0); \ + _rp.rp = svm_queue_init ((n), (sz), 0, 0); \ _rp.size = (sz); \ _rp.nitems = n; \ _rp.hits = 0; \ @@ -415,6 +423,70 @@ vl_init_shmem (svm_region_t * vlib_rp, int is_vlib, int is_private_region) foreach_clnt_aring_size; #undef _ +} + +void +vl_api_mem_config (vl_shmem_hdr_t * hdr, vl_api_shm_elem_config_t * config) +{ + api_main_t *am = &api_main; + vl_api_shm_elem_config_t *c; + ring_alloc_t *rp; + u32 size; + + if (!config) + { + vl_api_default_mem_config (hdr); + return; + } + + vec_foreach (c, config) + { + switch (c->type) + { + case VL_API_QUEUE: + hdr->vl_input_queue = svm_queue_init (c->count, + c->size, + getpid (), am->vlib_signal); + continue; + case VL_API_VLIB_RING: + vec_add2 (hdr->vl_rings, rp, 1); + break; + case VL_API_CLIENT_RING: + vec_add2 (hdr->client_rings, rp, 1); + break; + default: + clib_warning ("unknown config type: %d", c->type); + continue; + } + + size = sizeof (ring_alloc_t) + c->size; + rp->rp = svm_queue_init (c->count, size, 0, 0); + rp->size = size; + rp->nitems = c->count; + rp->hits = 0; + rp->misses = 0; + } +} + +void +vl_init_shmem (svm_region_t * vlib_rp, vl_api_shm_elem_config_t * config, + int is_vlib, int is_private_region) +{ + api_main_t *am = &api_main; + vl_shmem_hdr_t *shmem_hdr = 0; + void *oldheap; + ASSERT (vlib_rp); + + /* $$$$ need private region config parameters */ + + oldheap = svm_push_data_heap (vlib_rp); + + vec_validate (shmem_hdr, 0); + shmem_hdr->version = VL_SHM_VERSION; + shmem_hdr->clib_file_index = VL_API_INVALID_FI; + + /* Set up the queue and msg ring allocator */ + vl_api_mem_config (shmem_hdr, config); if (is_private_region == 0) { @@ -438,7 +510,6 @@ vl_init_shmem (svm_region_t * vlib_rp, int is_vlib, int is_private_region) pthread_mutex_unlock (&vlib_rp->mutex); } - int vl_map_shmem (const char *region_name, int is_vlib) { @@ -493,7 +564,7 @@ vl_map_shmem (const char *region_name, int is_vlib) am->our_pid = getpid (); if (is_vlib) { - unix_shared_memory_queue_t *q; + svm_queue_t *q; uword old_msg; /* * application restart. Reset cached pids, API message @@ -526,9 +597,7 @@ vl_map_shmem (const char *region_name, int is_vlib) mutex_ok: am->vlib_rp = vlib_rp; - while (unix_shared_memory_queue_sub (q, - (u8 *) & old_msg, - 1 /* nowait */ ) + while (svm_queue_sub (q, (u8 *) & old_msg, SVM_Q_NOWAIT, 0) != -2 /* queue underflow */ ) { vl_msg_api_free_nolock ((void *) old_msg); @@ -579,7 +648,8 @@ vl_map_shmem (const char *region_name, int is_vlib) } /* Nope, it's our problem... */ - vl_init_shmem (vlib_rp, 1 /* is vlib */ , 0 /* is_private_region */ ); + vl_init_shmem (vlib_rp, 0 /* default config */ , 1 /* is vlib */ , + 0 /* is_private_region */ ); vec_add1 (am->mapped_shmem_regions, vlib_rp); return 0; @@ -620,7 +690,7 @@ vl_unmap_shmem (void) } void -vl_msg_api_send_shmem (unix_shared_memory_queue_t * q, u8 * elem) +vl_msg_api_send_shmem (svm_queue_t * q, u8 * elem) { api_main_t *am = &api_main; uword *trace = (uword *) elem; @@ -628,11 +698,17 @@ vl_msg_api_send_shmem (unix_shared_memory_queue_t * q, u8 * elem) if (am->tx_trace && am->tx_trace->enabled) vl_msg_api_trace (am, am->tx_trace, (void *) trace[0]); - (void) unix_shared_memory_queue_add (q, elem, 0 /* nowait */ ); + (void) svm_queue_add (q, elem, 0 /* nowait */ ); +} + +int +vl_mem_api_can_send (svm_queue_t * q) +{ + return (q->cursize < q->maxsize); } void -vl_msg_api_send_shmem_nolock (unix_shared_memory_queue_t * q, u8 * elem) +vl_msg_api_send_shmem_nolock (svm_queue_t * q, u8 * elem) { api_main_t *am = &api_main; uword *trace = (uword *) elem; @@ -640,74 +716,7 @@ vl_msg_api_send_shmem_nolock (unix_shared_memory_queue_t * q, u8 * elem) if (am->tx_trace && am->tx_trace->enabled) vl_msg_api_trace (am, am->tx_trace, (void *) trace[0]); - (void) unix_shared_memory_queue_add_nolock (q, elem); -} - -u32 -vl_api_get_msg_index (u8 * name_and_crc) -{ - api_main_t *am = &api_main; - uword *p; - - if (am->msg_index_by_name_and_crc) - { - p = hash_get_mem (am->msg_index_by_name_and_crc, name_and_crc); - if (p) - return p[0]; - } - return ~0; -} - -static inline vl_api_registration_t * -vl_api_client_index_to_registration_internal (u32 handle) -{ - vl_api_registration_t **regpp; - vl_api_registration_t *regp; - api_main_t *am = &api_main; - u32 index; - - index = vl_msg_api_handle_get_index (handle); - if ((am->shmem_hdr->application_restarts & VL_API_EPOCH_MASK) - != vl_msg_api_handle_get_epoch (handle)) - { - vl_msg_api_increment_missing_client_counter (); - return 0; - } - - regpp = am->vl_clients + index; - - if (pool_is_free (am->vl_clients, regpp)) - { - vl_msg_api_increment_missing_client_counter (); - return 0; - } - regp = *regpp; - return (regp); -} - -vl_api_registration_t * -vl_api_client_index_to_registration (u32 index) -{ - if (PREDICT_FALSE (socket_main.current_rp != 0)) - return socket_main.current_rp; - - return (vl_api_client_index_to_registration_internal (index)); -} - -unix_shared_memory_queue_t * -vl_api_client_index_to_input_queue (u32 index) -{ - vl_api_registration_t *regp; - api_main_t *am = &api_main; - - /* Special case: vlib trying to send itself a message */ - if (index == (u32) ~ 0) - return (am->shmem_hdr->vl_input_queue); - - regp = vl_api_client_index_to_registration_internal (index); - if (!regp) - return 0; - return (regp->vl_input_queue); + (void) svm_queue_add_nolock (q, elem); } /*