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rdma_cm: add rdma_is_consumer_reject() helper function 

Return true if the peer consumer application rejected the
connection attempt.

Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Reviewed-by: Christoph Hellwig <hch@lst.de>
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 12:36:47 -07:00 committed by Doug Ledford
parent 77a5db1315
commit 5042a73d3e
2 changed files with 20 additions and 0 deletions
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13
drivers/infiniband/core/cma.c
View File

@ -115,6 +115,19 @@ const char *__attribute_const__ rdma_reject_msg(struct rdma_cm_id *id,
}
EXPORT_SYMBOL(rdma_reject_msg);
bool rdma_is_consumer_reject(struct rdma_cm_id *id, int reason)
{
if (rdma_ib_or_roce(id->device, id->port_num))
return reason == IB_CM_REJ_CONSUMER_DEFINED;
if (rdma_protocol_iwarp(id->device, id->port_num))
return reason == -ECONNREFUSED;
WARN_ON_ONCE(1);
return false;
}
EXPORT_SYMBOL(rdma_is_consumer_reject);
static void cma_add_one(struct ib_device *device);
static void cma_remove_one(struct ib_device *device, void *client_data);

7
include/rdma/rdma_cm.h
View File

@ -395,5 +395,12 @@ __be64 rdma_get_service_id(struct rdma_cm_id *id, struct sockaddr *addr);
*/
const char *__attribute_const__ rdma_reject_msg(struct rdma_cm_id *id,
int reason);
/**
* rdma_is_consumer_reject - return true if the consumer rejected the connect
* request.
* @id: Communication identifier that received the REJECT event.
* @reason: Value returned in the REJECT event status field.
*/
bool rdma_is_consumer_reject(struct rdma_cm_id *id, int reason);
#endif /* RDMA_CM_H */