From 176698e8c2fd7ab8007b8074515d6144e7177d8e Mon Sep 17 00:00:00 2001 From: dimitri staessens Date: Fri, 25 Aug 2017 17:19:17 +0200 Subject: ipcpd: Deprecate gam as autonomous component The graph adjacency manager has been deprecated in favor of providing an external interface into the connectivity manager so that adjacencies can be controlled from the command line, user scripts or user applications. The gam and its associated policies were removed from the normal IPCP and the IRM configuration tools. The "/members" part of the RIB was deprecated. Removal of the gam means that initial connectivity based on changes in the RIB can't be provided, so some changes were required throughout the normal IPCP. The enrollment procedure was revised to establish its own connectivity. First, it gets boot information from a peer by establishing a connection to the remote enrollment component and downloading the IPCP configuratoin. This is now done using its own protocol buffers message in anticipation of deprecation of the RIB and CDAP for communication within a DIF. After the boot information is downloaded, it establishes a data transfer flow for enrolling the directory (DHT). After the DHT has enrolled, it signals the peer to that enrollment is done, and the data transfer connection is torn down. Signaling connections is done via the nbs struct, which is now passed to the connmgr, which enables control of the connectivity graph from external sources. --- src/ipcpd/normal/dt.c | 82 ++++++++++++++++++++++++++++----------------------- 1 file changed, 45 insertions(+), 37 deletions(-) (limited to 'src/ipcpd/normal/dt.c') diff --git a/src/ipcpd/normal/dt.c b/src/ipcpd/normal/dt.c index f4ab2440..19c2d3a6 100644 --- a/src/ipcpd/normal/dt.c +++ b/src/ipcpd/normal/dt.c @@ -38,7 +38,6 @@ #include "dt_pci.h" #include "pff.h" #include "neighbors.h" -#include "gam.h" #include "routing.h" #include "sdu_sched.h" #include "ae.h" @@ -67,11 +66,12 @@ struct { struct ae_info aes[AP_RES_FDS]; pthread_rwlock_t lock; - struct gam * gam; struct nbs * nbs; struct ae * ae; struct nb_notifier nb_notifier; + + pthread_t listener; } dt; static int dt_neighbor_event(enum nb_event event, @@ -149,36 +149,46 @@ static int sdu_handler(int fd, return 0; } -int dt_init(void) +static void * dt_conn_handle(void * o) { - int i; - int j; - struct conn_info info; - enum pol_routing pr; + struct conn conn; - if (rib_read(BOOT_PATH "/dt/routing/type", &pr, sizeof(pr)) - != sizeof(pr)) { - log_err("Failed to read policy for routing."); - return -1; - } + (void) o; - if (dt_pci_init()) { - log_err("Failed to init shm dt_pci."); - return -1; + while (true) { + if (connmgr_wait(AEID_DT, &conn)) { + log_err("Failed to get next DT connection."); + continue; + } + + log_dbg("Got new connection."); + + nbs_add(dt.nbs, conn); } + return 0; +} + +int dt_init(enum pol_routing pr, + uint8_t addr_size, + uint8_t fd_size, + bool has_ttl) +{ + int i; + int j; + struct conn_info info; + memset(&info, 0, sizeof(info)); strcpy(info.ae_name, DT_AE); strcpy(info.protocol, DT_PROTO); info.pref_version = 1; - info.pref_syntax = PROTO_FIXED; - info.addr = ipcpi.dt_addr; + info.pref_syntax = PROTO_FIXED; + info.addr = ipcpi.dt_addr; - dt.ae = connmgr_ae_create(info); - if (dt.ae == NULL) { - log_err("Failed to create AE struct."); - goto fail_connmgr; + if (dt_pci_init(addr_size, fd_size, has_ttl)) { + log_err("Failed to init shm dt_pci."); + goto fail_pci_init; } dt.nbs = nbs_create(); @@ -193,6 +203,11 @@ int dt_init(void) goto fail_nbs_notifier; } + if (connmgr_ae_init(AEID_DT, &info, dt.nbs)) { + log_err("Failed to register with connmgr."); + goto fail_connmgr_ae_init; + }; + if (routing_init(pr, dt.nbs)) { log_err("Failed to init routing."); goto fail_routing; @@ -233,6 +248,8 @@ int dt_init(void) for (j = 0; j < QOS_CUBE_MAX; ++j) routing_i_destroy(dt.routing[j]); fail_routing_i: + connmgr_ae_fini(AEID_DT); + fail_connmgr_ae_init: for (i = 0; i < QOS_CUBE_MAX; ++i) pff_destroy(dt.pff[i]); fail_pff: @@ -242,9 +259,9 @@ int dt_init(void) fail_nbs_notifier: nbs_destroy(dt.nbs); fail_nbs: - connmgr_ae_destroy(dt.ae); - fail_connmgr: dt_pci_fini(); + fail_pci_init: + connmgr_ae_fini(AEID_DT); return -1; } @@ -268,28 +285,19 @@ void dt_fini(void) nbs_destroy(dt.nbs); - connmgr_ae_destroy(dt.ae); + connmgr_ae_fini(AEID_DT); } int dt_start(void) { - enum pol_gam pg; - - if (rib_read(BOOT_PATH "/dt/gam/type", &pg, sizeof(pg)) - != sizeof(pg)) { - log_err("Failed to read policy for ribmgr gam."); - return -1; - } - dt.sdu_sched = sdu_sched_create(sdu_handler); if (dt.sdu_sched == NULL) { log_err("Failed to create N-1 SDU scheduler."); return -1; } - dt.gam = gam_create(pg, dt.nbs, dt.ae); - if (dt.gam == NULL) { - log_err("Failed to init dt graph adjacency manager."); + if (pthread_create(&dt.listener, NULL, dt_conn_handle, NULL)) { + log_err("Failed to create listener thread."); sdu_sched_destroy(dt.sdu_sched); return -1; } @@ -299,8 +307,8 @@ int dt_start(void) void dt_stop(void) { - gam_destroy(dt.gam); - + pthread_cancel(dt.listener); + pthread_join(dt.listener, NULL); sdu_sched_destroy(dt.sdu_sched); } -- cgit v1.2.3