Commit a276672e authored by Grzegorz Morys's avatar Grzegorz Morys Committed by Doug Ledford
Browse files

IB/hfi1: Prohibit invalid Init to Armed state transition 



It is invalid to change Link state from Init to Armed if
IsSmConfigurationStarted bit is not set in Attribute modifier
for Set subnet management method in case of PortInfo
and PortStateInfo attribute.
Set response MAD status field bits accordingly to react correctly
in such situations and avoid changing Link state.

Reviewed-by: default avatarIra Weiny <ira.weiny@intel.com>
Reviewed-by: default avatarMichael J. Ruhl <michael.j.ruhl@intel.com>
Signed-off-by: default avatarGrzegorz Morys <grzegorz.morys@intel.com>
Signed-off-by: default avatarDennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: default avatarDoug Ledford <dledford@redhat.com>
parent cc9a97ea

drivers/infiniband/hw/hfi1/mad.c

+18 −14
Original line number Diff line number Diff line
@@ -1238,8 +1238,7 @@ static int port_states_transition_allowed(struct hfi1_pportdata *ppd, 
}



static int set_port_states(struct hfi1_pportdata *ppd, struct opa_smp *smp,

			   u32 logical_state, u32 phys_state,

			   int suppress_idle_sma)

			   u32 logical_state, u32 phys_state)

{

	struct hfi1_devdata *dd = ppd->dd;

	u32 link_state;
@@ -1320,7 +1319,7 @@ static int set_port_states(struct hfi1_pportdata *ppd, struct opa_smp *smp, 
		break;

	case IB_PORT_ARMED:

		ret = set_link_state(ppd, HLS_UP_ARMED);

		if ((ret == 0) && (suppress_idle_sma == 0))

		if (!ret)

			send_idle_sma(dd, SMA_IDLE_ARM);

		break;

	case IB_PORT_ACTIVE:
@@ -1614,8 +1613,10 @@ static int __subn_set_opa_portinfo(struct opa_smp *smp, u32 am, u8 *data, 
			if (ls_new == ls_old || (ls_new == IB_PORT_ARMED))

				ppd->is_sm_config_started = 1;

		} else if (ls_new == IB_PORT_ARMED) {

			if (ppd->is_sm_config_started == 0)

			if (ppd->is_sm_config_started == 0) {

				invalid = 1;

				smp->status |= IB_SMP_INVALID_FIELD;

			}

		}

	}
@@ -1632,9 +1633,11 @@ static int __subn_set_opa_portinfo(struct opa_smp *smp, u32 am, u8 *data, 
	 * is down or is being set to down.

	 */



	ret = set_port_states(ppd, smp, ls_new, ps_new, invalid);

	if (!invalid) {

		ret = set_port_states(ppd, smp, ls_new, ps_new);

		if (ret)

			return ret;

	}



	ret = __subn_get_opa_portinfo(smp, am, data, ibdev, port, resp_len,

				      max_len);
@@ -2111,17 +2114,18 @@ static int __subn_set_opa_psi(struct opa_smp *smp, u32 am, u8 *data, 
			if (ls_new == ls_old || (ls_new == IB_PORT_ARMED))

				ppd->is_sm_config_started = 1;

		} else if (ls_new == IB_PORT_ARMED) {

			if (ppd->is_sm_config_started == 0)

			if (ppd->is_sm_config_started == 0) {

				invalid = 1;

				smp->status |= IB_SMP_INVALID_FIELD;

			}

		}

	}



	ret = set_port_states(ppd, smp, ls_new, ps_new, invalid);

	if (!invalid) {

		ret = set_port_states(ppd, smp, ls_new, ps_new);

		if (ret)

			return ret;



	if (invalid)

		smp->status |= IB_SMP_INVALID_FIELD;

	}



	return __subn_get_opa_psi(smp, am, data, ibdev, port, resp_len,

				  max_len);

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