s390/qdio: bridgeport support - CHSC part

Introduce function for the "Perform network-subchannel operation"
CHSC command with operation code "bridgeport information",
and bit definitions for "characteristics" pertaning to this command.

Signed-off-by: Eugene Crosser <eugene.crosser@ru.ibm.com>
Reviewed-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

2 files changed, 35 insertions, 0 deletions

diff --git a/arch/s390/include/asm/css_chars.h b/arch/s390/include/asm/css_chars.h
index 7e1c917bbba2..09d1dd46bd57 100644
--- a/arch/s390/include/asm/css_chars.h
+++ b/arch/s390/include/asm/css_chars.h
@@ -29,6 +29,8 @@ struct css_general_char {
         u32 fcx : 1;     /* bit 88 */
         u32 : 19;
         u32 alt_ssi : 1; /* bit 108 */
+        u32:1;
+        u32 narf:1;      /* bit 110 */
 } __packed;
 
 extern struct css_general_char css_general_characteristics;
diff --git a/arch/s390/include/asm/qdio.h b/arch/s390/include/asm/qdio.h
index 57d0d7e794b1..0a1abf1e69af 100644
--- a/arch/s390/include/asm/qdio.h
+++ b/arch/s390/include/asm/qdio.h
@@ -378,6 +378,34 @@ struct qdio_initialize {
         struct qdio_outbuf_state *output_sbal_state_array;
 };
 
+/**
+ * enum qdio_brinfo_entry_type - type of address entry for qdio_brinfo_desc()
+ * @l3_ipv6_addr: entry contains IPv6 address
+ * @l3_ipv4_addr: entry contains IPv4 address
+ * @l2_addr_lnid: entry contains MAC address and VLAN ID
+ */
+enum qdio_brinfo_entry_type {l3_ipv6_addr, l3_ipv4_addr, l2_addr_lnid};
+
+/**
+ * struct qdio_brinfo_entry_XXX - Address entry for qdio_brinfo_desc()
+ * @nit:  Network interface token
+ * @addr: Address of one of the three types
+ *
+ * The struct is passed to the callback function by qdio_brinfo_desc()
+ */
+struct qdio_brinfo_entry_l3_ipv6 {
+        u64 nit;
+        struct { unsigned char _s6_addr[16]; } addr;
+} __packed;
+struct qdio_brinfo_entry_l3_ipv4 {
+        u64 nit;
+        struct { uint32_t _s_addr; } addr;
+} __packed;
+struct qdio_brinfo_entry_l2 {
+        u64 nit;
+        struct { u8 mac[6]; u16 lnid; } addr_lnid;
+} __packed;
+
 #define QDIO_STATE_INACTIVE             0x00000002 /* after qdio_cleanup */
 #define QDIO_STATE_ESTABLISHED          0x00000004 /* after qdio_establish */
 #define QDIO_STATE_ACTIVE               0x00000008 /* after qdio_activate */
@@ -399,5 +427,10 @@ extern int qdio_get_next_buffers(struct ccw_device *, int, int *, int *);
 extern int qdio_shutdown(struct ccw_device *, int);
 extern int qdio_free(struct ccw_device *);
 extern int qdio_get_ssqd_desc(struct ccw_device *, struct qdio_ssqd_desc *);
+extern int qdio_pnso_brinfo(struct subchannel_id schid,
+                int cnc, u16 *response,
+                void (*cb)(void *priv, enum qdio_brinfo_entry_type type,
+                                void *entry),
+                void *priv);
 
 #endif /* __QDIO_H__ */