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svcrdma: Refactor the creation of listener CMA ID

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In a moment, I will add a second consumer of CMA ID creation in
svcrdma. Refactor so this code can be reused.

Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
This commit is contained in:
Chuck Lever 2024-05-31 09:15:52 -04:00
parent 022d0574ef
commit 283d285462
1 changed files with 40 additions and 27 deletions
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67
net/sunrpc/xprtrdma/svc_rdma_transport.c
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@ -65,6 +65,8 @@
static struct svcxprt_rdma *svc_rdma_create_xprt(struct svc_serv *serv,
struct net *net, int node);
static int svc_rdma_listen_handler(struct rdma_cm_id *cma_id,
struct rdma_cm_event *event);
static struct svc_xprt *svc_rdma_create(struct svc_serv *serv,
struct net *net,
struct sockaddr *sa, int salen,
@ -122,6 +124,41 @@ static void qp_event_handler(struct ib_event *event, void *context)
}
}
static struct rdma_cm_id *
svc_rdma_create_listen_id(struct net *net, struct sockaddr *sap,
void *context)
{
struct rdma_cm_id *listen_id;
int ret;
listen_id = rdma_create_id(net, svc_rdma_listen_handler, context,
RDMA_PS_TCP, IB_QPT_RC);
if (IS_ERR(listen_id))
return listen_id;
/* Allow both IPv4 and IPv6 sockets to bind a single port
* at the same time.
*/
#if IS_ENABLED(CONFIG_IPV6)
ret = rdma_set_afonly(listen_id, 1);
if (ret)
goto out_destroy;
#endif
ret = rdma_bind_addr(listen_id, sap);
if (ret)
goto out_destroy;
ret = rdma_listen(listen_id, RPCRDMA_LISTEN_BACKLOG);
if (ret)
goto out_destroy;
return listen_id;
out_destroy:
rdma_destroy_id(listen_id);
return ERR_PTR(ret);
}
static struct svcxprt_rdma *svc_rdma_create_xprt(struct svc_serv *serv,
struct net *net, int node)
{
@ -307,7 +344,6 @@ static struct svc_xprt *svc_rdma_create(struct svc_serv *serv,
{
struct rdma_cm_id *listen_id;
struct svcxprt_rdma *cma_xprt;
int ret;
if (sa->sa_family != AF_INET && sa->sa_family != AF_INET6)
return ERR_PTR(-EAFNOSUPPORT);
@ -317,30 +353,13 @@ static struct svc_xprt *svc_rdma_create(struct svc_serv *serv,
set_bit(XPT_LISTENER, &cma_xprt->sc_xprt.xpt_flags);
strcpy(cma_xprt->sc_xprt.xpt_remotebuf, "listener");
listen_id = rdma_create_id(net, svc_rdma_listen_handler, cma_xprt,
RDMA_PS_TCP, IB_QPT_RC);
listen_id = svc_rdma_create_listen_id(net, sa, cma_xprt);
if (IS_ERR(listen_id)) {
ret = PTR_ERR(listen_id);
goto err0;
kfree(cma_xprt);
return (struct svc_xprt *)listen_id;
}
/* Allow both IPv4 and IPv6 sockets to bind a single port
* at the same time.
*/
#if IS_ENABLED(CONFIG_IPV6)
ret = rdma_set_afonly(listen_id, 1);
if (ret)
goto err1;
#endif
ret = rdma_bind_addr(listen_id, sa);
if (ret)
goto err1;
cma_xprt->sc_cm_id = listen_id;
ret = rdma_listen(listen_id, RPCRDMA_LISTEN_BACKLOG);
if (ret)
goto err1;
/*
* We need to use the address from the cm_id in case the
* caller specified 0 for the port number.
@ -349,12 +368,6 @@ static struct svc_xprt *svc_rdma_create(struct svc_serv *serv,
svc_xprt_set_local(&cma_xprt->sc_xprt, sa, salen);
return &cma_xprt->sc_xprt;
err1:
rdma_destroy_id(listen_id);
err0:
kfree(cma_xprt);
return ERR_PTR(ret);
}
/*