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net/smc: add SMC-D diag support 

This patch adds diag support for SMC-D.

Signed-off-by: Hans Wippel <hwippel@linux.ibm.com>
Signed-off-by: Ursula Braun <ubraun@linux.ibm.com>
Suggested-by: Thomas Richter <tmricht@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Hans Wippel 2018-06-28 19:05:12 +02:00 committed by David S. Miller
parent 413498440e
commit 4b1b7d3b30
2 changed files with 25 additions and 0 deletions
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10
include/uapi/linux/smc_diag.h
View File

@ -35,6 +35,7 @@ enum {
SMC_DIAG_CONNINFO,
SMC_DIAG_LGRINFO,
SMC_DIAG_SHUTDOWN,
SMC_DIAG_DMBINFO,
__SMC_DIAG_MAX,
};
@ -83,4 +84,13 @@ struct smc_diag_lgrinfo {
struct smc_diag_linkinfo lnk[1];
__u8 role;
};
struct smcd_diag_dmbinfo { /* SMC-D Socket internals */
__u32 linkid; /* Link identifier */
__u64 peer_gid; /* Peer GID */
__u64 my_gid; /* My GID */
__u64 token; /* Token of DMB */
__u64 peer_token; /* Token of remote DMBE */
};
#endif /* _UAPI_SMC_DIAG_H_ */

15
net/smc/smc_diag.c
View File

@ -156,6 +156,21 @@ static int __smc_diag_dump(struct sock *sk, struct sk_buff *skb,
if (nla_put(skb, SMC_DIAG_LGRINFO, sizeof(linfo), &linfo) < 0)
goto errout;
}
if (smc->conn.lgr && smc->conn.lgr->is_smcd &&
(req->diag_ext & (1 << (SMC_DIAG_DMBINFO - 1))) &&
!list_empty(&smc->conn.lgr->list)) {
struct smc_connection *conn = &smc->conn;
struct smcd_diag_dmbinfo dinfo = {
.linkid = *((u32 *)conn->lgr->id),
.peer_gid = conn->lgr->peer_gid,
.my_gid = conn->lgr->smcd->local_gid,
.token = conn->rmb_desc->token,
.peer_token = conn->peer_token
};
if (nla_put(skb, SMC_DIAG_DMBINFO, sizeof(dinfo), &dinfo) < 0)
goto errout;
}
nlmsg_end(skb, nlh);
return 0;