[PATCH v3 1/6] rdma_cm: add rdma_reject_msg() helper function
Steve Wise
swise at opengridcomputing.com
Mon Oct 24 11:59:03 PDT 2016
rdma_reject_msg() returns a pointer to a string message associated with
the transport reject reason codes.
Signed-off-by: Steve Wise <swise at opengridcomputing.com>
---
drivers/infiniband/core/cm.c | 48 ++++++++++++++++++++++++++++++++++++++++++
drivers/infiniband/core/cma.c | 14 ++++++++++++
drivers/infiniband/core/iwcm.c | 21 ++++++++++++++++++
include/rdma/ib_cm.h | 6 ++++++
include/rdma/iw_cm.h | 6 ++++++
include/rdma/rdma_cm.h | 8 +++++++
6 files changed, 103 insertions(+)
diff --git a/drivers/infiniband/core/cm.c b/drivers/infiniband/core/cm.c
index c995255..98bcc9c 100644
--- a/drivers/infiniband/core/cm.c
+++ b/drivers/infiniband/core/cm.c
@@ -57,6 +57,54 @@ MODULE_AUTHOR("Sean Hefty");
MODULE_DESCRIPTION("InfiniBand CM");
MODULE_LICENSE("Dual BSD/GPL");
+static const char * const ibcm_rej_reason_strs[] = {
+ [IB_CM_REJ_NO_QP] = "no qp",
+ [IB_CM_REJ_NO_EEC] = "no eec",
+ [IB_CM_REJ_NO_RESOURCES] = "no resources",
+ [IB_CM_REJ_TIMEOUT] = "timeout",
+ [IB_CM_REJ_UNSUPPORTED] = "unsupported",
+ [IB_CM_REJ_INVALID_COMM_ID] = "invalid comm id",
+ [IB_CM_REJ_INVALID_COMM_INSTANCE] = "invalid comm instance",
+ [IB_CM_REJ_INVALID_SERVICE_ID] = "invalid service id",
+ [IB_CM_REJ_INVALID_TRANSPORT_TYPE] = "invalid transport type",
+ [IB_CM_REJ_STALE_CONN] = "stale conn",
+ [IB_CM_REJ_RDC_NOT_EXIST] = "rdc not exist",
+ [IB_CM_REJ_INVALID_GID] = "invalid gid",
+ [IB_CM_REJ_INVALID_LID] = "invalid lid",
+ [IB_CM_REJ_INVALID_SL] = "invalid sl",
+ [IB_CM_REJ_INVALID_TRAFFIC_CLASS] = "invalid traffic class",
+ [IB_CM_REJ_INVALID_HOP_LIMIT] = "invalid hop limit",
+ [IB_CM_REJ_INVALID_PACKET_RATE] = "invalid packet rate",
+ [IB_CM_REJ_INVALID_ALT_GID] = "invalid alt gid",
+ [IB_CM_REJ_INVALID_ALT_LID] = "invalid alt lid",
+ [IB_CM_REJ_INVALID_ALT_SL] = "invalid alt sl",
+ [IB_CM_REJ_INVALID_ALT_TRAFFIC_CLASS] = "invalid alt traffic class",
+ [IB_CM_REJ_INVALID_ALT_HOP_LIMIT] = "invalid alt hop limit",
+ [IB_CM_REJ_INVALID_ALT_PACKET_RATE] = "invalid alt packet rate",
+ [IB_CM_REJ_PORT_CM_REDIRECT] = "port cm redirect",
+ [IB_CM_REJ_PORT_REDIRECT] = "port redirect",
+ [IB_CM_REJ_INVALID_MTU] = "invalid mtu",
+ [IB_CM_REJ_INSUFFICIENT_RESP_RESOURCES] = "insufficient resp resources",
+ [IB_CM_REJ_CONSUMER_DEFINED] = "consumer defined",
+ [IB_CM_REJ_INVALID_RNR_RETRY] = "invalid rnr retry",
+ [IB_CM_REJ_DUPLICATE_LOCAL_COMM_ID] = "duplicate local comm id",
+ [IB_CM_REJ_INVALID_CLASS_VERSION] = "invalid class version",
+ [IB_CM_REJ_INVALID_FLOW_LABEL] = "invalid flow label",
+ [IB_CM_REJ_INVALID_ALT_FLOW_LABEL] = "invalid alt flow label",
+};
+
+const char *__attribute_const__ ibcm_reject_msg(int reason)
+{
+ size_t index = reason;
+
+ if (index >= ARRAY_SIZE(ibcm_rej_reason_strs) ||
+ !ibcm_rej_reason_strs[index])
+ return "unrecognized reason";
+ else
+ return ibcm_rej_reason_strs[index];
+}
+EXPORT_SYMBOL(ibcm_reject_msg);
+
static void cm_add_one(struct ib_device *device);
static void cm_remove_one(struct ib_device *device, void *client_data);
diff --git a/drivers/infiniband/core/cma.c b/drivers/infiniband/core/cma.c
index 5f65a78..831e94b 100644
--- a/drivers/infiniband/core/cma.c
+++ b/drivers/infiniband/core/cma.c
@@ -101,6 +101,20 @@ const char *__attribute_const__ rdma_event_msg(enum rdma_cm_event_type event)
}
EXPORT_SYMBOL(rdma_event_msg);
+const char *__attribute_const__ rdma_reject_msg(struct rdma_cm_id *id,
+ int reason)
+{
+ if (rdma_ib_or_roce(id->device, id->port_num))
+ return ibcm_reject_msg(reason);
+
+ if (rdma_protocol_iwarp(id->device, id->port_num))
+ return iwcm_reject_msg(reason);
+
+ WARN_ON_ONCE(1);
+ return "unrecognized reason";
+}
+EXPORT_SYMBOL(rdma_reject_msg);
+
static void cma_add_one(struct ib_device *device);
static void cma_remove_one(struct ib_device *device, void *client_data);
diff --git a/drivers/infiniband/core/iwcm.c b/drivers/infiniband/core/iwcm.c
index 357624f..8d01253 100644
--- a/drivers/infiniband/core/iwcm.c
+++ b/drivers/infiniband/core/iwcm.c
@@ -59,6 +59,27 @@ MODULE_AUTHOR("Tom Tucker");
MODULE_DESCRIPTION("iWARP CM");
MODULE_LICENSE("Dual BSD/GPL");
+static const char * const iwcm_rej_reason_strs[] = {
+ [ECONNRESET] = "reset by remote host",
+ [ECONNREFUSED] = "refused by remote application",
+ [ETIMEDOUT] = "setup timeout",
+};
+
+const char *__attribute_const__ iwcm_reject_msg(int reason)
+{
+ size_t index;
+
+ /* iWARP uses negative errnos */
+ index = -reason;
+
+ if (index >= ARRAY_SIZE(iwcm_rej_reason_strs) ||
+ !iwcm_rej_reason_strs[index])
+ return "unrecognized reason";
+ else
+ return iwcm_rej_reason_strs[index];
+}
+EXPORT_SYMBOL(iwcm_reject_msg);
+
static struct ibnl_client_cbs iwcm_nl_cb_table[] = {
[RDMA_NL_IWPM_REG_PID] = {.dump = iwpm_register_pid_cb},
[RDMA_NL_IWPM_ADD_MAPPING] = {.dump = iwpm_add_mapping_cb},
diff --git a/include/rdma/ib_cm.h b/include/rdma/ib_cm.h
index 92a7d85..b49258b 100644
--- a/include/rdma/ib_cm.h
+++ b/include/rdma/ib_cm.h
@@ -603,4 +603,10 @@ struct ib_cm_sidr_rep_param {
int ib_send_cm_sidr_rep(struct ib_cm_id *cm_id,
struct ib_cm_sidr_rep_param *param);
+/**
+ * ibcm_reject_msg - return a pointer to a reject message string.
+ * @reason: Value returned in the REJECT event status field.
+ */
+const char *__attribute_const__ ibcm_reject_msg(int reason);
+
#endif /* IB_CM_H */
diff --git a/include/rdma/iw_cm.h b/include/rdma/iw_cm.h
index 6d0065c..5cd7701 100644
--- a/include/rdma/iw_cm.h
+++ b/include/rdma/iw_cm.h
@@ -253,4 +253,10 @@ int iw_cm_disconnect(struct iw_cm_id *cm_id, int abrupt);
int iw_cm_init_qp_attr(struct iw_cm_id *cm_id, struct ib_qp_attr *qp_attr,
int *qp_attr_mask);
+/**
+ * iwcm_reject_msg - return a pointer to a reject message string.
+ * @reason: Value returned in the REJECT event status field.
+ */
+const char *__attribute_const__ iwcm_reject_msg(int reason);
+
#endif /* IW_CM_H */
diff --git a/include/rdma/rdma_cm.h b/include/rdma/rdma_cm.h
index 81fb1d1..f11a768 100644
--- a/include/rdma/rdma_cm.h
+++ b/include/rdma/rdma_cm.h
@@ -388,4 +388,12 @@ int rdma_set_afonly(struct rdma_cm_id *id, int afonly);
*/
__be64 rdma_get_service_id(struct rdma_cm_id *id, struct sockaddr *addr);
+/**
+ * rdma_reject_msg - return a pointer to a reject message string.
+ * @id: Communication identifier that received the REJECT event.
+ * @reason: Value returned in the REJECT event status field.
+ */
+const char *__attribute_const__ rdma_reject_msg(struct rdma_cm_id *id,
+ int reason);
+
#endif /* RDMA_CM_H */
--
2.7.0
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