RPC/RDMA: optionally emit useful transport info upon connect/disconnect.
Signed-off-by: Tom Talpey <talpey@netapp.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
diff --git a/net/sunrpc/xprtrdma/verbs.c b/net/sunrpc/xprtrdma/verbs.c
index f46fb93..170e69c 100644
--- a/net/sunrpc/xprtrdma/verbs.c
+++ b/net/sunrpc/xprtrdma/verbs.c
@@ -344,6 +344,27 @@
break;
}
+#ifdef RPC_DEBUG
+ if (connstate == 1) {
+ int ird = attr.max_dest_rd_atomic;
+ int tird = ep->rep_remote_cma.responder_resources;
+ printk(KERN_INFO "rpcrdma: connection to %u.%u.%u.%u:%u "
+ "on %s, memreg %d slots %d ird %d%s\n",
+ NIPQUAD(addr->sin_addr.s_addr),
+ ntohs(addr->sin_port),
+ ia->ri_id->device->name,
+ ia->ri_memreg_strategy,
+ xprt->rx_buf.rb_max_requests,
+ ird, ird < 4 && ird < tird / 2 ? " (low!)" : "");
+ } else if (connstate < 0) {
+ printk(KERN_INFO "rpcrdma: connection to %u.%u.%u.%u:%u "
+ "closed (%d)\n",
+ NIPQUAD(addr->sin_addr.s_addr),
+ ntohs(addr->sin_port),
+ connstate);
+ }
+#endif
+
return 0;
}