LU-10391 lnet: migrate full LNet NI information collection

[fs/lustre-release.git] / lnet / include / lnet / socklnd.h

diff --git a/lnet/include/lnet/socklnd.h b/lnet/include/lnet/socklnd.h
index fed0d6e..ff1fe23 100644 (file)
--- a/lnet/include/lnet/socklnd.h
+++ b/lnet/include/lnet/socklnd.h
@@ -35,45 +35,65 @@
 #include <uapi/linux/lnet/socklnd.h>
 
 struct ksock_hello_msg {
-       __u32                   kshm_magic;     /* magic number of socklnd message */
-       __u32                   kshm_version;   /* version of socklnd message */
+       __u32                   kshm_magic;     /* LNET_PROTO_MAGIC */
+       __u32                   kshm_version;   /* KSOCK_PROTO_V* */
+       struct lnet_nid         kshm_src_nid;   /* sender's nid */
+       struct lnet_nid         kshm_dst_nid;   /* destination nid */
+       lnet_pid_t              kshm_src_pid;   /* sender's pid */
+       lnet_pid_t              kshm_dst_pid;   /* destination pid */
+       __u64                   kshm_src_incarnation; /* sender's incarnation */
+       __u64                   kshm_dst_incarnation; /* destination's incarnation */
+       __u32                   kshm_ctype;     /* SOCKLND_CONN_* */
+       __u32                   kshm_nips;      /* always sent as zero */
+       __u32                   kshm_ips[0];    /* deprecated */
+} __packed;
+
+struct ksock_hello_msg_nid4 {
+       __u32                   kshm_magic;     /* LNET_PROTO_MAGIC */
+       __u32                   kshm_version;   /* KSOCK_PROTO_V* */
        lnet_nid_t              kshm_src_nid;   /* sender's nid */
        lnet_nid_t              kshm_dst_nid;   /* destination nid */
        lnet_pid_t              kshm_src_pid;   /* sender's pid */
        lnet_pid_t              kshm_dst_pid;   /* destination pid */
        __u64                   kshm_src_incarnation; /* sender's incarnation */
        __u64                   kshm_dst_incarnation; /* destination's incarnation */
-       __u32                   kshm_ctype;     /* connection type */
-       __u32                   kshm_nips;      /* # IP addrs */
-       __u32                   kshm_ips[0];    /* IP addrs */
+       __u32                   kshm_ctype;     /* SOCKLND_CONN_* */
+       __u32                   kshm_nips;      /* sent as zero */
+       __u32                   kshm_ips[0];    /* deprecated */
 } __packed;
 
-struct ksock_lnet_msg {
-       struct lnet_hdr         ksnm_hdr;       /* lnet hdr */
-
-       /*
-        * ksnm_payload is removed because of winnt compiler's limitation:
-        * zero-sized array can only be placed at the tail of [nested]
-        * structure definitions. lnet payload will be stored just after
-        * the body of structure struct ksock_lnet_msg
-        */
+struct ksock_msg_hdr {
+       __u32                   ksh_type;       /* type of socklnd message */
+       __u32                   ksh_csum;       /* checksum if != 0 */
+       __u64                   ksh_zc_cookies[2]; /* Zero-Copy request/ACK
+                                                   * cookie
+                                                   */
 } __packed;
 
+#define KSOCK_MSG_NOOP         0xc0            /* empty */
+#define KSOCK_MSG_LNET         0xc1            /* lnet msg */
+
 struct ksock_msg {
-       __u32                   ksm_type;       /* type of socklnd message */
-       __u32                   ksm_csum;       /* checksum if != 0 */
-       __u64                   ksm_zc_cookies[2]; /* Zero-Copy request/ACK cookie */
+       struct ksock_msg_hdr    ksm_kh;
        union {
-               struct ksock_lnet_msg lnetmsg;  /* lnet message, it's empty if it's NOOP */
+               /* case ksm_kh.ksh_type == KSOCK_MSG_NOOP */
+               /* - nothing */
+               /* case ksm_kh.ksh_type == KSOCK_MSG_LNET */
+               struct lnet_hdr_nid4 lnetmsg_nid4;
+               /* case ksm_kh.ksh_type == KSOCK_MSG_LNET &&
+                *      kshm_version >= KSOCK_PROTO_V4
+                */
+               struct lnet_hdr_nid16 lnetmsg_nid16;
        } __packed ksm_u;
 } __packed;
-
-#define KSOCK_MSG_NOOP         0xc0            /* ksm_u empty */
-#define KSOCK_MSG_LNET         0xc1            /* lnet msg */
+#define ksm_type ksm_kh.ksh_type
+#define ksm_csum ksm_kh.ksh_csum
+#define ksm_zc_cookies ksm_kh.ksh_zc_cookies
 
 /* We need to know this number to parse hello msg from ksocklnd in
  * other LND (usocklnd, for example) */
 #define KSOCK_PROTO_V2         2
 #define KSOCK_PROTO_V3         3
+#define KSOCK_PROTO_V4         4
 
 #endif