X-Git-Url: https://gerrit.o-ran-sc.org/r/gitweb?a=blobdiff_plain;f=src%2Frmr%2Fcommon%2Fsrc%2Frt_generic_static.c;h=ca45f4bddccf32748a96abbe1a183e853db9f64e;hb=fc5c77b3d78988aa407118235d7f5978642df753;hp=245c9b533d24163c3ff392ea9dd5802ecb9a953e;hpb=2dfb310585e1ea20d222aa1ed129c89e8c240935;p=ric-plt%2Flib%2Frmr.git diff --git a/src/rmr/common/src/rt_generic_static.c b/src/rmr/common/src/rt_generic_static.c index 245c9b5..ca45f4b 100644 --- a/src/rmr/common/src/rt_generic_static.c +++ b/src/rmr/common/src/rt_generic_static.c @@ -46,6 +46,8 @@ #include #include +#include // needed for route manager messages + /* Passed to a symtab foreach callback to construct a list of pointers from @@ -192,6 +194,85 @@ static void rt_epcounts( route_table_t* rt, char* id ) { rmr_sym_foreach_class( rt->hash, 1, ep_counts, id ); // run endpoints in the active table } +// ------------ route manager communication ------------------------------------------------- +/* + Send a request for a table update to the route manager. Updates come in + async, so send and go. + + pctx is the private context for the thread; ctx is the application context + that we need to be able to send the application ID in case rt mgr needs to + use it to idenfity us. + + Returns 0 if we were not able to send a request. +*/ +static int send_update_req( uta_ctx_t* pctx, uta_ctx_t* ctx ) { + rmr_mbuf_t* smsg; + int state = 0; + + if( ctx->rtg_whid < 0 ) { + return state; + } + + smsg = rmr_alloc_msg( pctx, 1024 ); + if( smsg != NULL ) { + smsg->mtype = RMRRM_REQ_TABLE; + smsg->sub_id = 0; + snprintf( smsg->payload, 1024, "%s ts=%ld\n", ctx->my_name, (long) time( NULL ) ); + rmr_vlog( RMR_VL_INFO, "rmr_rtc: requesting table: (%s) whid=%d\n", smsg->payload, ctx->rtg_whid ); + smsg->len = strlen( smsg->payload ) + 1; + + smsg = rmr_wh_send_msg( pctx, ctx->rtg_whid, smsg ); + if( (state = smsg->state) != RMR_OK ) { + rmr_vlog( RMR_VL_INFO, "rmr_rtc: send failed: %d whid=%d\n", smsg->state, ctx->rtg_whid ); + rmr_wh_close( ctx, ctx->rtg_whid ); // send failed, assume connection lost + ctx->rtg_whid = -1; + } + + rmr_free_msg( smsg ); + } + + return state; +} + +/* + Send an ack to the route table manager for a table ID that we are + processing. State is 1 for OK, and 0 for failed. Reason might + be populated if we know why there was a failure. + + Context should be the PRIVATE context that we use for messages + to route manger and NOT the user's context. +*/ +static void send_rt_ack( uta_ctx_t* ctx, char* table_id, int state, char* reason ) { + rmr_mbuf_t* smsg; + + if( ctx == NULL || ctx->rtg_whid < 0 ) { + return; + } + + if( ctx->flags & CFL_NO_RTACK ) { // don't ack if reading from file etc + return; + } + + smsg = rmr_alloc_msg( ctx, 1024 ); + if( smsg != NULL ) { + smsg->mtype = RMRRM_TABLE_STATE; + smsg->sub_id = 0; + snprintf( smsg->payload, 1024, "%s %s %s\n", state == RMR_OK ? "OK" : "ERR", + table_id == NULL ? "" : table_id, reason == NULL ? "" : reason ); + + smsg->len = strlen( smsg->payload ) + 1; + + rmr_vlog( RMR_VL_INFO, "rmr_rtc: sending table state: (%s) state=%d whid=%d\n", smsg->payload, smsg->state, ctx->rtg_whid ); + smsg = rmr_wh_send_msg( ctx, ctx->rtg_whid, smsg ); + if( (state = smsg->state) != RMR_OK ) { + rmr_vlog( RMR_VL_WARN, "unable to send table state: %d\n", smsg->state ); + rmr_wh_close( ctx, ctx->rtg_whid ); // send failed, assume connection lost + ctx->rtg_whid = -1; + } + + rmr_free_msg( smsg ); + } +} // ------------------------------------------------------------------------------------------------ /* @@ -573,20 +654,26 @@ static void meid_parser( uta_ctx_t* ctx, char** tokens, int ntoks, int vlevel ) For a RT update, we expect: - newrt|{start|end [hold]} + newrt | start | + newrt | end | rte|[,sender]|[;,...] mse|[,sender]||[;,...] mse| [,sender] | | %meid For a meid map update we expect: - meid_map | start + meid_map | start | meid_map | end | | mme_ar | | ... mme_del | ... + + The pctx is our private context that must be used to send acks/status + messages back to the route manager. The regular ctx is the ctx that + the user has been given and thus that's where we have to hang the route + table we're working with. */ -static void parse_rt_rec( uta_ctx_t* ctx, char* buf, int vlevel ) { +static void parse_rt_rec( uta_ctx_t* ctx, uta_ctx_t* pctx, char* buf, int vlevel ) { int i; int ntoks; // number of tokens found in something int ngtoks; @@ -594,6 +681,7 @@ static void parse_rt_rec( uta_ctx_t* ctx, char* buf, int vlevel ) { rtable_ent_t* rte; // route table entry added char* tokens[128]; char* tok; // pointer into a token or string + char wbuf[1024]; if( ! buf ) { return; @@ -630,6 +718,18 @@ static void parse_rt_rec( uta_ctx_t* ctx, char* buf, int vlevel ) { case 'n': // newrt|{start|end} tokens[1] = clip( tokens[1] ); if( strcmp( tokens[1], "end" ) == 0 ) { // wrap up the table we were building + if( ntoks >2 ) { + if( ctx->new_rtable->updates != atoi( tokens[2] ) ) { // count they added didn't match what we received + rmr_vlog( RMR_VL_ERR, "rmr_rtc: RT update had wrong number of records: received %d expected %s\n", + ctx->new_rtable->updates, tokens[2] ); + snprintf( wbuf, sizeof( wbuf ), "missing table records: expected %s got %d\n", tokens[2], ctx->new_rtable->updates ); + send_rt_ack( pctx, ctx->table_id, !RMR_OK, wbuf ); + uta_rt_drop( ctx->new_rtable ); + ctx->new_rtable = NULL; + break; + } + } + if( ctx->new_rtable ) { uta_rt_drop( ctx->old_rtable ); // time to drop one that was previously replaced ctx->old_rtable = ctx->rtable; // currently active becomes old and allowed to 'drain' @@ -643,18 +743,32 @@ static void parse_rt_rec( uta_ctx_t* ctx, char* buf, int vlevel ) { rmr_vlog_force( RMR_VL_DEBUG, "new route table:\n" ); rt_stats( ctx->rtable ); } + + send_rt_ack( pctx, ctx->table_id, RMR_OK, NULL ); } else { if( DEBUG > 1 ) rmr_vlog_force( RMR_VL_DEBUG, "end of route table noticed, but one was not started!\n" ); ctx->new_rtable = NULL; } - } else { // start a new table. - if( ctx->new_rtable != NULL ) { // one in progress? this forces it out + } else { // start a new table. + if( ctx->new_rtable != NULL ) { // one in progress? this forces it out + send_rt_ack( pctx, ctx->table_id, !RMR_OK, "table not complete" ); // nack the one that was pending as end never made it + if( DEBUG > 1 || (vlevel > 1) ) rmr_vlog_force( RMR_VL_DEBUG, "new table; dropping incomplete table\n" ); uta_rt_drop( ctx->new_rtable ); } + if( ctx->table_id != NULL ) { + free( ctx->table_id ); + } + if( ntoks >2 ) { + ctx->table_id = strdup( clip( tokens[2] ) ); + } else { + ctx->table_id = NULL; + } + ctx->new_rtable = NULL; ctx->new_rtable = uta_rt_clone( ctx->rtable ); // create by cloning endpoint and meidtentries from active table + ctx->new_rtable->updates = 0; // init count of entries received if( DEBUG > 1 || (vlevel > 1) ) rmr_vlog_force( RMR_VL_DEBUG, "start of route table noticed\n" ); } break; @@ -730,6 +844,13 @@ static void parse_rt_rec( uta_ctx_t* ctx, char* buf, int vlevel ) { uta_rt_drop( ctx->new_rtable ); } + if( ntoks >2 ) { + if( ctx->table_id != NULL ) { + free( ctx->table_id ); + } + ctx->table_id = strdup( clip( tokens[2] ) ); + } + ctx->new_rtable = uta_rt_clone_all( ctx->rtable ); // start with a clone of everything (endpts and entries) ctx->new_rtable->updates = 0; // init count of updates received if( DEBUG > 1 || (vlevel > 1) ) rmr_vlog_force( RMR_VL_DEBUG, "start of rt update noticed\n" ); @@ -787,7 +908,7 @@ static void read_static_rt( uta_ctx_t* ctx, int vlevel ) { return; } - parse_rt_rec( ctx, rec, vlevel ); + parse_rt_rec( ctx, NULL, rec, vlevel ); // no pvt context as we can't ack } if( DEBUG ) rmr_vlog_force( RMR_VL_DEBUG, "rmr_read_static: seed route table successfully parsed: %d records\n", rcount ); @@ -1114,4 +1235,18 @@ static inline uint64_t build_rt_key( int32_t sub_id, int32_t mtype ) { return key; } +/* + Given a route table and meid string, find the owner (if known). Returns a pointer to + the endpoint struct or nil. +*/ +static inline endpoint_t* get_meid_owner( route_table_t *rt, char* meid ) { + endpoint_t* ep; // the ep we found in the hash + + if( rt == NULL || rt->hash == NULL || meid == NULL || *meid == 0 ) { + return NULL; + } + + return (endpoint_t *) rmr_sym_get( rt->hash, meid, RT_ME_SPACE ); +} + #endif