[openib-general][PATCH 1 of 3] repost: Client Reregister support for kernel space

[Roland Dreier]

 > +struct port_info {
 > +	__be64	mkey;
 > +	__be64	gid_prefix;
 > +	__be16	lid;
 > +	__be16	sm_lid;
 > +	__be32	cap_mask;
 > +	__be16	diag_code;
 > +	__be16	mkey_lease_period;
 > +	u8	local_port_num;
 > +	u8	link_width_enabled;
 > +	u8	link_width_supported;
 > +	u8	link_width_active;
 > +	u8	linkspeed_portstate;		/* 4 bits, 4 bits */
 > +	u8	portphysstate_linkdown;		/* 4 bits, 4 bits */
 > +	u8	mkeyprot_resv_lmc;		/* 2 bits, 3 bits, 3 bits */
 > +	u8	linkspeedactive_enabled;	/* 4 bits, 4 bits */
 > +	u8	neighbormtu_mastersmsl;		/* 4 bits, 4 bits */
 > +	u8	vlcap_inittype;			/* 4 bits, 4 bits */
 > +	u8	vl_high_limit;
 > +	u8	vl_arb_high_cap;
 > +	u8	vl_arb_low_cap;
 > +	u8	inittypereply_mtucap;		/* 4 bits, 4 bits */
 > +	u8	vlstallcnt_hoqlife;		/* 3 bits, 5 bits */
 > +	u8	operationalvl_pei_peo_fpi_fpo;	/* 4 bits, 1, 1, 1, 1 */
 > +	__be16	mkey_violations;
 > +	__be16	pkey_violations;
 > +	__be16	qkey_violations;
 > +	u8	guid_cap;
 > +	u8	clientrereg_resv_subnetto;	/* 1 bit, 2 bits, 5 bits */
 > +	u8	resv_resptimevalue;		/* 3 bits, 5 bits */
 > +	u8	localphyerrors_overrunerrors;	/* 4 bits, 4 bits */
 > +	__be16	max_credit_hint;
 > +	u8	resv;
 > +	u8	link_roundtrip_latency[3];
 > +} __attribute__ ((packed));

Any reason why this needs to be packed?  It looks like everything is
naturally aligned to its size anyway.