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nvmf: enforce fabric command order and type rules

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Only allow Connect on a new connection (one that has no associated
session yet), and only allow Propert Set/Get on admin queues.

Change-Id: Iae22379ee47b095333372e6d151a7a1509acf654
Signed-off-by: Daniel Verkamp <daniel.verkamp@intel.com>
This commit is contained in:
Daniel Verkamp 2016-07-18 14:22:46 -07:00
parent 2d1c3419ad
commit b794135bb1
1 changed files with 31 additions and 10 deletions
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41
lib/nvmf/request.c
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@ -450,20 +450,41 @@ nvmf_process_connect(struct spdk_nvmf_request *req)
static bool
nvmf_process_fabrics_command(struct spdk_nvmf_request *req)
{
struct spdk_nvmf_conn *conn = req->conn;
struct spdk_nvmf_capsule_cmd *cap_hdr;
cap_hdr = &req->cmd->nvmf_cmd;
switch (cap_hdr->fctype) {
case SPDK_NVMF_FABRIC_COMMAND_PROPERTY_SET:
return nvmf_process_property_set(req);
case SPDK_NVMF_FABRIC_COMMAND_PROPERTY_GET:
return nvmf_process_property_get(req);
case SPDK_NVMF_FABRIC_COMMAND_CONNECT:
return nvmf_process_connect(req);
default:
SPDK_TRACELOG(SPDK_TRACE_DEBUG, "recv capsule header type invalid [%x]!\n",
cap_hdr->fctype);
if (conn->sess == NULL) {
/* No session established yet; the only valid command is Connect */
if (cap_hdr->fctype == SPDK_NVMF_FABRIC_COMMAND_CONNECT) {
return nvmf_process_connect(req);
} else {
SPDK_TRACELOG(SPDK_TRACE_NVMF, "Got fctype 0x%x, expected Connect\n",
cap_hdr->fctype);
req->rsp->nvme_cpl.status.sc = SPDK_NVME_SC_COMMAND_SEQUENCE_ERROR;
return true;
}
} else if (conn->type == CONN_TYPE_AQ) {
/*
* Session is established, and this is an admin queue.
* Disallow Connect and allow other fabrics commands.
*/
switch (cap_hdr->fctype) {
case SPDK_NVMF_FABRIC_COMMAND_PROPERTY_SET:
return nvmf_process_property_set(req);
case SPDK_NVMF_FABRIC_COMMAND_PROPERTY_GET:
return nvmf_process_property_get(req);
default:
SPDK_TRACELOG(SPDK_TRACE_NVMF, "recv capsule header type invalid [%x]!\n",
cap_hdr->fctype);
req->rsp->nvme_cpl.status.sc = SPDK_NVME_SC_INVALID_OPCODE;
return true;
}
} else {
/* Session is established, and this is an I/O queue */
/* For now, no I/O-specific Fabrics commands are implemented (other than Connect) */
SPDK_TRACELOG(SPDK_TRACE_NVMF, "Unexpected I/O fctype 0x%x\n", cap_hdr->fctype);
req->rsp->nvme_cpl.status.sc = SPDK_NVME_SC_INVALID_OPCODE;
return true;
}