search for: send_query

...to the network. LogDir: /tmp ThreshDir: /tmp HtmlDir: /tmp ImageDir: /tmp LogDir: /tmp EnableIPv6: yes Target[bai-gw-i-oct]: ifInOctets.1&ifOutOctets.1:abc123@[2001:b50:940f::f001] Title[bai-gw-i-oct]: Test MaxBytes[bai-gw-i-oct]: 100000000 # env LANG=C /usr/bin/mrtg /tmp/test.cfg SNMP Error: send_query: Address family not supported by protocol SNMPv1_Session (remote host: "2001:b50:940f::f001" [2001:b50:940f::f001].161) community: "abc123" request ID: 1156567655 PDU bufsize: 8000 bytes timeout: 2s...

...n 0; - NEWSTYLE.OPT_SET_META_CONTEXT.PREPARE_NEXT_QUERY: + NEWSTYLE.OPT_META_CONTEXT.PREPARE_NEXT_QUERY: const char *query = h->request_meta_contexts[h->querynum]; if (query == NULL) { /* end of list of requested meta contexts */ @@ -112,7 +112,7 @@ STATE_MACHINE { SET_NEXT_STATE (%SEND_QUERYLEN); return 0; - NEWSTYLE.OPT_SET_META_CONTEXT.SEND_QUERYLEN: + NEWSTYLE.OPT_META_CONTEXT.SEND_QUERYLEN: const char *query = h->request_meta_contexts[h->querynum]; switch (send_from_wbuf (h)) { @@ -124,7 +124,7 @@ STATE_MACHINE { } return 0; - NEWSTYLE.OPT_SET_META_CONTEXT.S...

I'm posting this now, as I'm at the end of a workday and I got things working for manual experimentation. Still to do: - write interop tests for qemu-nbd and nbdkit (including my proposed patch addition of qemu-nbd -A to show qemu:allocation-depth) - figure out if we can make 'nbdinfo --map' use the new API to automatically select all contexts advertised by the server Eric Blake

...= h->request_meta_contexts[h->querynum]; switch (send_from_wbuf (h)) { - case -1: SET_NEXT_STATE (%.DEAD); return -1; + case -1: SET_NEXT_STATE (%.DEAD); return 0; case 0: h->wbuf = query; h->wlen = strlen (query); @@ -125,7 +125,7 @@ NEWSTYLE.OPT_SET_META_CONTEXT.SEND_QUERY: switch (send_from_wbuf (h)) { - case -1: SET_NEXT_STATE (%.DEAD); return -1; + case -1: SET_NEXT_STATE (%.DEAD); return 0; case 0: h->querynum++; SET_NEXT_STATE (%PREPARE_NEXT_QUERY); @@ -140,11 +140,11 @@ NEWSTYLE.OPT_SET_META_CONTEXT.RECV_REPLY: switch (recv_into_rbuf...

This isn't quite finished because not all of the tests or examples have been updated, but it demonstrates an idea: Should we forget about the concept of having multiple connections managed under a single handle? In this patch there is a single ‘struct nbd_handle *’ which manages a single state machine and connection (and therefore no nbd_connection). To connect to a multi-conn server you must

I still need to wire in the use of *_notify functions into nbdkit to prove whether it makes the code any faster or easier to maintain, but at least the added example shows one good use case for the new API. Eric Blake (6): api: Add nbd_aio_in_flight generator: Allow DEAD state actions to run generator: Allow Int64 in callbacks states: Prepare for aio notify callback api: Add new