Here are five possible code completions for the given function:

**1. Simple Redirect**
```c
static int xdp_do_generic_redirect_map(struct net_device *dev,
				       struct sk_buff *skb,
				       struct xdp_buff *xdp,
				       struct bpf_map *map)
{
    u32 key = xdp->data - xdp->data_hard_start;
    u32 *value;

    value = bpf_map_lookup_elem(map, &key);
    if (value)
        return xdp_redirect(*value, dev);
    return XDP_ABORTED;
}
```

**2. Redirect with Error Handling**
```c
static int xdp_do_generic_redirect_map(struct net_device *dev,
				       struct sk_buff *skb,
				       struct xdp_buff *xdp,
				       struct bpf_map *map)
{
    u32 key = xdp->data - xdp->data_hard_start;
    u32 *value;

    value = bpf_map_lookup_elem(map, &key);
    if (!value)
        return XDP_ABORTED;

    if (bpf_redirect(*value, dev) != XDP_REDIRECT)
        return XDP_ABORTED;
    return XDP_REDIRECT;
}
```

**3. Redirect with Packet Modification**
```c
static int xdp_do_generic_redirect_map(struct net_device *dev,
				       struct sk_buff *skb,
				       struct xdp_buff *xdp,
				       struct bpf_map *map)
{
    u32 key = xdp->data - xdp->data_hard_start;
    u32 *value;

    value = bpf_map_lookup_elem(map, &key);
    if (!value)
        return XDP_ABORTED;

    // Modify packet data
    xdp->data += 10;

    if (bpf_redirect(*value, dev) != XDP_REDIRECT)
        return XDP_ABORTED;
    return XDP_REDIRECT;
}
```

**4. Redirect with Packet Drop**
```c
static int xdp_do_generic_redirect_map(struct net_device *dev,
				       struct sk_buff *skb,
				       struct xdp_buff *xdp,
				       struct bpf_map *map)
{
    u32 key = xdp->data - xdp->data_hard_start;
    u32 *value;

    value = bpf_map_lookup_elem(map, &key);
    if (!value)
        return XDP_DROP;

    if (bpf_redirect(*value, dev) != XDP_REDIRECT)
        return XDP_DROP;
    return XDP_REDIRECT;
}
```

**5. Redirect with Packet Pass**
```c
static int xdp_do_generic_redirect_map(struct net_device *dev,
				       struct sk_buff *skb,
				       struct xdp_buff *xdp,
				       struct bpf_map *map)
{
    u32 key = xdp->data - xdp->data_hard_start;
    u32 *value;

    value = bpf_map_lookup_elem(map, &key);
    if (!value)
        return XDP_PASS;

    if (bpf_redirect(*value, dev) != XDP_REDIRECT)
        return XDP_PASS;
    return XDP_REDIRECT;
}
```

Note: These examples assume that the `bpf_map_lookup_elem` and `bpf_redirect` functions are available and correctly implemented.