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net: sockets: Remove socket offloading interface

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Instead of using a custom offloading interface, users can use
`NET_SOCKET_REGISTER` macro to register custom socket API provider. This
solution removes a limitation, that only one offloaded interface can be
registered and that it cannot be used together with native IP stack.

The only exception remainig are DNS releated operations -
`getaddrinfo`/`freeaddrinfo`, which, when offloaded, have to be
registered specifically.

Signed-off-by: Robert Lubos <robert.lubos@nordicsemi.no>
This commit is contained in:
Robert Lubos 2019-12-05 15:49:15 +01:00 • committed by Anas Nashif
commit bea1093e62
8 changed files with 80 additions and 289 deletions
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37
subsys/net/lib/sockets/socket_offload.c
View file

@ -8,29 +8,34 @@
LOG_MODULE_REGISTER(net_socket_offload, CONFIG_NET_SOCKETS_LOG_LEVEL);
#include <net/socket_offload.h>
#include <net/socket.h>
/* Only one provider may register socket operations upon boot. */
const struct socket_offload *socket_ops;
#include "sockets_internal.h"
void socket_offload_register(const struct socket_offload *ops)
const struct socket_dns_offload *dns_offload;
void socket_offload_dns_register(const struct socket_dns_offload *ops)
{
__ASSERT_NO_MSG(ops);
__ASSERT_NO_MSG(socket_ops == NULL);
__ASSERT_NO_MSG(dns_offload == NULL);
socket_ops = ops;
dns_offload = ops;
}
int fcntl(int fd, int cmd, ...)
int socket_offload_getaddrinfo(const char *node, const char *service,
const struct zsock_addrinfo *hints,
struct zsock_addrinfo **res)
{
__ASSERT_NO_MSG(socket_ops);
__ASSERT_NO_MSG(socket_ops->fcntl);
__ASSERT_NO_MSG(dns_offload);
__ASSERT_NO_MSG(dns_offload->getaddrinfo);
va_list args;
int res;
va_start(args, cmd);
res = socket_ops->fcntl(fd, cmd, args);
va_end(args);
return res;
return dns_offload->getaddrinfo(node, service, hints, res);
}
void socket_offload_freeaddrinfo(struct zsock_addrinfo *res)
{
__ASSERT_NO_MSG(dns_offload);
__ASSERT_NO_MSG(dns_offload->freeaddrinfo);
return dns_offload->freeaddrinfo(res);
}