On Thu, Mar 25, 2021 at 6:19 PM Zhu Yanjun <yanjun.zhu@xxxxxxxxx> wrote:
>
> From: Zhu Yanjun <zyjzyj2000@xxxxxxxxx>
>
> When ipv6.disable=1 is set in cmdline, ipv6 is actually disabled
> in the stack. As such, the operations of ipv6 will fail.
> So ipv6 features in addr should also be disabled.
>
> Fixes: caf1e3ae9fa6 ("RDMA/core Introduce and use rdma_find_ndev_for_src_ip_rcu")
> Suggested-by: Jason Gunthorpe <jgg@xxxxxxxxxx>
Hi, Jason
Gently ping
> Signed-off-by: Zhu Yanjun <zyjzyj2000@xxxxxxxxx>
> ---
> drivers/infiniband/core/addr.c | 6 ++++++
> 1 file changed, 6 insertions(+)
>
> diff --git a/drivers/infiniband/core/addr.c b/drivers/infiniband/core/addr.c
> index 0abce004a959..6fa57b83c4b1 100644
> --- a/drivers/infiniband/core/addr.c
> +++ b/drivers/infiniband/core/addr.c
> @@ -257,6 +257,9 @@ rdma_find_ndev_for_src_ip_rcu(struct net *net, const struct sockaddr *src_in)
> break;
> #if IS_ENABLED(CONFIG_IPV6)
> case AF_INET6:
> + if (!ipv6_mod_enabled())
> + return ERR_PTR(-EPFNOSUPPORT);
> +
> for_each_netdev_rcu(net, dev) {
> if (ipv6_chk_addr(net,
> &((const struct sockaddr_in6 *)src_in)->sin6_addr,
> @@ -424,6 +427,9 @@ static int addr6_resolve(struct sockaddr *src_sock,
> struct flowi6 fl6;
> struct dst_entry *dst;
>
> + if (!ipv6_mod_enabled())
> + return -EADDRNOTAVAIL;
> +
> memset(&fl6, 0, sizeof fl6);
> fl6.daddr = dst_in->sin6_addr;
> fl6.saddr = src_in->sin6_addr;
> --
> 2.27.0
>
