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| | /* SPDX-License-Identifier: GPL-2.0-or-later
* Copyright Red Hat
* Author: David Gibson <david@gibson.dropbear.id.au>
*
* Passt/pasta interface types and IDs
*/
#include <stdint.h>
#include <assert.h>
#include <netinet/in.h>
#include "util.h"
#include "pif.h"
#include "siphash.h"
#include "ip.h"
#include "inany.h"
#include "passt.h"
const char *pif_type_str[] = {
[PIF_NONE] = "<none>",
[PIF_HOST] = "HOST",
[PIF_TAP] = "TAP",
[PIF_SPLICE] = "SPLICE",
};
static_assert(ARRAY_SIZE(pif_type_str) == PIF_NUM_TYPES,
"pif_type_str[] doesn't match enum pif_type");
/** pif_sockaddr() - Construct a socket address suitable for an interface
* @c: Execution context
* @sa: Pointer to sockaddr to fill in
* @sl: Updated to relevant of length of initialised @sa
* @pif: Interface to create the socket address
* @addr: IPv[46] address
* @port: Port (host byte order)
*
* Return: true if resulting socket address is non-trivial (specified address or
* non-zero port), false otherwise
*/
bool pif_sockaddr(const struct ctx *c, union sockaddr_inany *sa, socklen_t *sl,
uint8_t pif, const union inany_addr *addr, in_port_t port)
{
const struct in_addr *v4 = inany_v4(addr);
ASSERT(pif_is_socket(pif));
if (v4) {
sa->sa_family = AF_INET;
sa->sa4.sin_addr = *v4;
sa->sa4.sin_port = htons(port);
memset(&sa->sa4.sin_zero, 0, sizeof(sa->sa4.sin_zero));
*sl = sizeof(sa->sa4);
return !IN4_IS_ADDR_UNSPECIFIED(v4) || port;
}
sa->sa_family = AF_INET6;
sa->sa6.sin6_addr = addr->a6;
sa->sa6.sin6_port = htons(port);
if (pif == PIF_HOST && IN6_IS_ADDR_LINKLOCAL(&addr->a6))
sa->sa6.sin6_scope_id = c->ifi6;
else
sa->sa6.sin6_scope_id = 0;
sa->sa6.sin6_flowinfo = 0;
*sl = sizeof(sa->sa6);
return !IN6_IS_ADDR_UNSPECIFIED(&addr->a6) || port;
}
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