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rdma_cm: add rdma_reject_msg() helper function

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rdma_reject_msg() returns a pointer to a string message associated with
the transport reject reason codes.

Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Reviewed-by: Bart Van Assche <bart.vanassche@sandisk.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
This commit is contained in:
Steve Wise 2016-10-26 12:36:40 -07:00 committed by Doug Ledford
parent e37a79e5d4
commit 77a5db1315
6 changed files with 103 additions and 0 deletions
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48
drivers/infiniband/core/cm.c
View File

@ -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 ibcm_rej_reason_strs[index];
else
return "unrecognized reason";
}
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);

14
drivers/infiniband/core/cma.c
View File

@ -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 transport";
}
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);

21
drivers/infiniband/core/iwcm.c
View File

@ -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 iwcm_rej_reason_strs[index];
else
return "unrecognized reason";
}
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},

6
include/rdma/ib_cm.h
View File

@ -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 */

6
include/rdma/iw_cm.h
View File

@ -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 */

8
include/rdma/rdma_cm.h
View File

@ -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 */