#include <linux/slab.h> #include"ah.h" #include"vt.h"/* for prints */
/** * rvt_check_ah - validate the attributes of AH * @ibdev: the ib device * @ah_attr: the attributes of the AH * * If driver supports a more detailed check_ah function call back to it * otherwise just check the basics. * * Return: 0 on success
*/ int rvt_check_ah(struct ib_device *ibdev, struct rdma_ah_attr *ah_attr)
{ int err; int port_num = rdma_ah_get_port_num(ah_attr); struct ib_port_attr port_attr; struct rvt_dev_info *rdi = ib_to_rvt(ibdev);
u8 ah_flags = rdma_ah_get_ah_flags(ah_attr);
u8 static_rate = rdma_ah_get_static_rate(ah_attr);
err = ib_query_port(ibdev, port_num, &port_attr); if (err) return -EINVAL; if (port_num < 1 ||
port_num > ibdev->phys_port_cnt) return -EINVAL; if (static_rate != IB_RATE_PORT_CURRENT &&
ib_rate_to_mbps(static_rate) < 0) return -EINVAL; if ((ah_flags & IB_AH_GRH) &&
rdma_ah_read_grh(ah_attr)->sgid_index >= port_attr.gid_tbl_len) return -EINVAL; if (rdi->driver_f.check_ah) return rdi->driver_f.check_ah(ibdev, ah_attr); return 0;
}
EXPORT_SYMBOL(rvt_check_ah);
/** * rvt_create_ah - create an address handle * @ibah: the IB address handle * @init_attr: the attributes of the AH * @udata: pointer to user's input output buffer information. * * This may be called from interrupt context. * * Return: 0 on success
*/ int rvt_create_ah(struct ib_ah *ibah, struct rdma_ah_init_attr *init_attr, struct ib_udata *udata)
{ struct rvt_ah *ah = ibah_to_rvtah(ibah); struct rvt_dev_info *dev = ib_to_rvt(ibah->device); unsignedlong flags;
if (rvt_check_ah(ibah->device, init_attr->ah_attr)) return -EINVAL;
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