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s4:librpc/rpc: allow a total reassembled response payload of 240 MBytes

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This will replace DCERPC_NCACN_PAYLOAD_MAX_SIZE (4 MByte),
The limit of DCERPC_NCACN_PAYLOAD_MAX_SIZE (4 MByte) was too
strict for some workloads, e.g. DRSUAPI replication with large objects.

BUG: https://bugzilla.samba.org/show_bug.cgi?id=11948

Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
(cherry picked from commit 7413e73c5331b760dc84b3843059230ec5fcfc7b)
This commit is contained in:
Stefan Metzmacher 2016-06-22 17:18:28 +02:00 committed by Karolin Seeger
parent c2d888ce22
commit 89bb48bdcc
2 changed files with 6 additions and 2 deletions
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5
source4/librpc/rpc/dcerpc.c
View File

@ -155,6 +155,7 @@ static struct dcecli_connection *dcerpc_connection_init(TALLOC_CTX *mem_ctx,
*/
c->srv_max_xmit_frag = 5840;
c->srv_max_recv_frag = 5840;
c->max_total_response_size = DCERPC_NCACN_RESPONSE_DEFAULT_MAX_SIZE;
c->pending = NULL;
c->io_trigger = tevent_create_immediate(c);
@ -1575,10 +1576,10 @@ static void dcerpc_request_recv_data(struct dcecli_connection *c,
length = pkt->u.response.stub_and_verifier.length;
if (req->payload.length + length > DCERPC_NCACN_PAYLOAD_MAX_SIZE) {
if (req->payload.length + length > c->max_total_response_size) {
DEBUG(2,("Unexpected total payload 0x%X > 0x%X dcerpc response\n",
(unsigned)req->payload.length + length,
DCERPC_NCACN_PAYLOAD_MAX_SIZE));
(unsigned)c->max_total_response_size));
dcerpc_connection_dead(c, NT_STATUS_RPC_PROTOCOL_ERROR);
return;
}

3
source4/librpc/rpc/dcerpc.h
View File

@ -107,6 +107,9 @@ struct dcecli_connection {
/* the next context_id to be assigned */
uint32_t next_context_id;
/* The maximum total payload of reassembled response pdus */
size_t max_total_response_size;
};
/*