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SubjectRe: [openib-general] Re: [PATCH 6/6] IB: userspace support for RDMA connection manager
Roland Dreier wrote:
> > +struct rdma_ucm_query_route_resp {
> > + __u64 node_guid;
> > + struct ib_user_path_rec ib_route[2];
> > + struct sockaddr_in6 src_addr;
> > + struct sockaddr_in6 dst_addr;
> > + __u32 num_paths;
> > + __u8 port_num;
> > + __u8 reserved[3];
> > +};
>
> Is there a 32-bit/64-bit compatibility problem here? From a quick
> look, struct sockaddr_in6 is not 8-byte aligned.

Unless I miss counted, they should be aligned. ib_user_path_rec is defined near
the end of patch 1/6.

+struct ib_user_path_rec {
+ __u8 dgid[16];
+ __u8 sgid[16];
+ __be16 dlid;
+ __be16 slid;
+ __u32 raw_traffic;
+ __be32 flow_label;
+ __u32 reversible;
+ __u32 mtu;
+ __be16 pkey;
+ __u8 hop_limit;
+ __u8 traffic_class;
+ __u8 numb_path;
+ __u8 sl;
+ __u8 mtu_selector;
+ __u8 rate_selector;
+ __u8 rate;
+ __u8 packet_life_time_selector;
+ __u8 packet_life_time;
+ __u8 preference;
+};

- Sean

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