C++ (Cpp) ipcomp_tunnel_attach Examples

Example #1

File: ipcomp.c Project: MiniBlu/cm11_kernel_htc_msm8974a3ul

static int ipcomp4_init_state(struct xfrm_state *x)
{
	int err = -EINVAL;

	x->props.header_len = 0;
	switch (x->props.mode) {
	case XFRM_MODE_TRANSPORT:
		break;
	case XFRM_MODE_TUNNEL:
		x->props.header_len += sizeof(struct iphdr);
		break;
	default:
		goto out;
	}

	err = ipcomp_init_state(x);
	if (err)
		goto out;

	if (x->props.mode == XFRM_MODE_TUNNEL) {
		err = ipcomp_tunnel_attach(x);
		if (err)
			goto out;
	}

	err = 0;
out:
	return err;
}

Example #2

static int ipcomp_init_state(struct xfrm_state *x, void *args)
{
	int err = -ENOMEM;
	struct ipcomp_data *ipcd;
	struct xfrm_algo_desc *calg_desc;

	ipcd = kmalloc(sizeof(*ipcd), GFP_KERNEL);
	if (!ipcd)
		goto error;

	memset(ipcd, 0, sizeof(*ipcd));
	x->props.header_len = sizeof(struct ip_comp_hdr);
	if (x->props.mode)
		x->props.header_len += sizeof(struct iphdr);

	ipcd->scratch = kmalloc(IPCOMP_SCRATCH_SIZE, GFP_KERNEL);
	if (!ipcd->scratch)
		goto error;
	
	ipcd->tfm = crypto_alloc_tfm(x->calg->alg_name, 0);
	if (!ipcd->tfm)
		goto error;

	if (x->props.mode) {
		err = ipcomp_tunnel_attach(x);
		if (err)
			goto error;
	}

	calg_desc = xfrm_calg_get_byname(x->calg->alg_name);
	BUG_ON(!calg_desc);
	ipcd->threshold = calg_desc->uinfo.comp.threshold;
	x->data = ipcd;
	err = 0;
out:
	return err;

error:
	if (ipcd) {
		ipcomp_free_data(ipcd);
		kfree(ipcd);
	}
	goto out;
}