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4e2d36e83f
Require the address and port information for the target (non initiating) side to be populated when a flow enters TGT state. Implement that for TCP and ICMP. For now this leaves some information redundantly recorded in both generic and type specific fields. We'll fix that in later patches. For TCP we now use the information from the flow to construct the destination socket address in both tcp_conn_from_tap() and tcp_splice_connect(). Signed-off-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
62 lines
1.6 KiB
C
62 lines
1.6 KiB
C
/* SPDX-License-Identifier: GPL-2.0-or-later
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* Copyright Red Hat
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* Author: David Gibson <david@gibson.dropbear.id.au>
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*
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* Passt/pasta interface types and IDs
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*/
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#include <stdint.h>
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#include <assert.h>
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#include <netinet/in.h>
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#include "util.h"
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#include "pif.h"
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#include "siphash.h"
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#include "ip.h"
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#include "inany.h"
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#include "passt.h"
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const char *pif_type_str[] = {
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[PIF_NONE] = "<none>",
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[PIF_HOST] = "HOST",
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[PIF_TAP] = "TAP",
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[PIF_SPLICE] = "SPLICE",
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};
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static_assert(ARRAY_SIZE(pif_type_str) == PIF_NUM_TYPES,
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"pif_type_str[] doesn't match enum pif_type");
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/** pif_sockaddr() - Construct a socket address suitable for an interface
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* @c: Execution context
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* @sa: Pointer to sockaddr to fill in
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* @sl: Updated to relevant length of initialised @sa
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* @pif: Interface to create the socket address
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* @addr: IPv[46] address
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* @port: Port (host byte order)
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*/
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void pif_sockaddr(const struct ctx *c, union sockaddr_inany *sa, socklen_t *sl,
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uint8_t pif, const union inany_addr *addr, in_port_t port)
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{
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const struct in_addr *v4 = inany_v4(addr);
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ASSERT(pif_is_socket(pif));
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if (v4) {
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sa->sa_family = AF_INET;
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sa->sa4.sin_addr = *v4;
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sa->sa4.sin_port = htons(port);
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memset(&sa->sa4.sin_zero, 0, sizeof(sa->sa4.sin_zero));
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*sl = sizeof(sa->sa4);
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} else {
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sa->sa_family = AF_INET6;
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sa->sa6.sin6_addr = addr->a6;
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sa->sa6.sin6_port = htons(port);
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if (pif == PIF_HOST && IN6_IS_ADDR_LINKLOCAL(&addr->a6))
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sa->sa6.sin6_scope_id = c->ifi6;
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else
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sa->sa6.sin6_scope_id = 0;
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sa->sa6.sin6_flowinfo = 0;
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*sl = sizeof(sa->sa6);
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}
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}
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