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RDMA/iwcm: Allow AFONLY binding for IPv6 addresses 

Binding IPv6 address/port to AF_INET6 domain only is provided via
rdma_set_afonly(), but was not signalled to the provider.  Applications
like NFS/RDMA bind the same port to both IPv4 and IPv6 addresses
simultaneously and thus rely on it working correctly.

Link: https://lore.kernel.org/r/20210219143441.1068-1-bmt@zurich.ibm.com
Tested-by: Chuck Lever <chuck.lever@oracle.com>
Tested-by: Benjamin Coddington <bcodding@redhat.com>
Signed-off-by: Bernard Metzler <bmt@zurich.ibm.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
This commit is contained in:
Bernard Metzler 2021-02-19 15:34:41 +01:00 committed by Jason Gunthorpe
parent 0f00571f94
commit e35ecb466e
3 changed files with 19 additions and 2 deletions
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1
drivers/infiniband/core/cma.c
View File

@ -2474,6 +2474,7 @@ static int cma_iw_listen(struct rdma_id_private *id_priv, int backlog)
id->tos = id_priv->tos;
id->tos_set = id_priv->tos_set;
id->afonly = id_priv->afonly;
id_priv->cm_id.iw = id;
memcpy(&id_priv->cm_id.iw->local_addr, cma_src_addr(id_priv),

19
drivers/infiniband/sw/siw/siw_cm.c
View File

@ -1300,7 +1300,7 @@ static void siw_cm_llp_state_change(struct sock *sk)
}
static int kernel_bindconnect(struct socket *s, struct sockaddr *laddr,
struct sockaddr *raddr)
struct sockaddr *raddr, bool afonly)
{
int rv, flags = 0;
size_t size = laddr->sa_family == AF_INET ?
@ -1311,6 +1311,12 @@ static int kernel_bindconnect(struct socket *s, struct sockaddr *laddr,
*/
sock_set_reuseaddr(s->sk);
if (afonly) {
rv = ip6_sock_set_v6only(s->sk);
if (rv)
return rv;
}
rv = s->ops->bind(s, laddr, size);
if (rv < 0)
return rv;
@ -1371,7 +1377,7 @@ int siw_connect(struct iw_cm_id *id, struct iw_cm_conn_param *params)
* mode. Might be reconsidered for async connection setup at
* TCP level.
*/
rv = kernel_bindconnect(s, laddr, raddr);
rv = kernel_bindconnect(s, laddr, raddr, id->afonly);
if (rv != 0) {
siw_dbg_qp(qp, "kernel_bindconnect: error %d\n", rv);
goto error;
@ -1786,6 +1792,15 @@ int siw_create_listen(struct iw_cm_id *id, int backlog)
} else {
struct sockaddr_in6 *laddr = &to_sockaddr_in6(id->local_addr);
if (id->afonly) {
rv = ip6_sock_set_v6only(s->sk);
if (rv) {
siw_dbg(id->device,
"ip6_sock_set_v6only erro: %d\n", rv);
goto error;
}
}
/* For wildcard addr, limit binding to current device only */
if (ipv6_addr_any(&laddr->sin6_addr))
s->sk->sk_bound_dev_if = sdev->netdev->ifindex;

1
include/rdma/iw_cm.h
View File

@ -70,6 +70,7 @@ struct iw_cm_id {
u8 tos;
bool tos_set:1;
bool mapped:1;
bool afonly:1;
};
struct iw_cm_conn_param {