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authorUrsula Braun <ubraun@linux.vnet.ibm.com>2017-01-09 16:55:14 +0100
committerDavid S. Miller <davem@davemloft.net>2017-01-09 16:07:38 -0500
commita4cf0443c4143b19e42389a1674b5b65224544ce (patch)
treeddb307b528feb0c8bc38e64a7caa9ee51f9d8da5 /net/smc/smc_ib.h
parentac7138746e14137a451f8539614cdd349153e0c0 (diff)
downloadlinux-a4cf0443c4143b19e42389a1674b5b65224544ce.tar.bz2
smc: introduce SMC as an IB-client
* create a list of SMC IB-devices Signed-off-by: Ursula Braun <ubraun@linux.vnet.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/smc/smc_ib.h')
-rw-r--r--net/smc/smc_ib.h40
1 files changed, 40 insertions, 0 deletions
diff --git a/net/smc/smc_ib.h b/net/smc/smc_ib.h
new file mode 100644
index 000000000000..63613e715f4f
--- /dev/null
+++ b/net/smc/smc_ib.h
@@ -0,0 +1,40 @@
+/*
+ * Shared Memory Communications over RDMA (SMC-R) and RoCE
+ *
+ * Definitions for IB environment
+ *
+ * Copyright IBM Corp. 2016
+ *
+ * Author(s): Ursula Braun <Ursula Braun@linux.vnet.ibm.com>
+ */
+
+#ifndef _SMC_IB_H
+#define _SMC_IB_H
+
+#include <rdma/ib_verbs.h>
+
+#define SMC_MAX_PORTS 2 /* Max # of ports */
+#define SMC_GID_SIZE sizeof(union ib_gid)
+
+struct smc_ib_devices { /* list of smc ib devices definition */
+ struct list_head list;
+ spinlock_t lock; /* protects list of smc ib devices */
+};
+
+extern struct smc_ib_devices smc_ib_devices; /* list of smc ib devices */
+
+struct smc_ib_device { /* ib-device infos for smc */
+ struct list_head list;
+ struct ib_device *ibdev;
+ struct ib_port_attr pattr[SMC_MAX_PORTS]; /* ib dev. port attrs */
+ char mac[SMC_MAX_PORTS][6]; /* mac address per port*/
+ union ib_gid gid[SMC_MAX_PORTS]; /* gid per port */
+ u8 initialized : 1; /* ib dev CQ, evthdl done */
+};
+
+int smc_ib_register_client(void) __init;
+void smc_ib_unregister_client(void);
+bool smc_ib_port_active(struct smc_ib_device *smcibdev, u8 ibport);
+int smc_ib_remember_port_attr(struct smc_ib_device *smcibdev, u8 ibport);
+
+#endif