freebsd compat. layer: ifnet and ethernet methods. missing MII and callout

git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@21000 a95241bf-73f2-0310-859d-f6bbb57e9c96

src/libs/compat/freebsd_network/Jamfile

@@ -12,6 +12,7 @@ Library libfreebsd_network.a :
 	busdma_machdep.c
 	compat.c
 	device.c
+	if.c
 	if_media.c
 	mbuf.c
 	mutex.c

src/libs/compat/freebsd_network/compat/altq/if_altq.h

@@ -10,6 +10,7 @@ struct ifaltq {
 
 	int				ifq_len;
 	int				ifq_maxlen;
+	int				ifq_drops;
 	struct mtx		ifq_mtx;
 
 	struct mbuf *	ifq_drv_head;
@@ -25,6 +26,8 @@ struct ifaltq {
 #define ALTDQ_REMOVE	1
 
 #define ALTQ_IS_ENABLED(ifq)	0
+#define ALTQ_ENQUEUE(ifr, m, foo, error) \
+	do { m_freem(m); error = -1; } while (0)
 #define ALTQ_DEQUEUE(ifr, m)	(m) = NULL
 
 #define TBR_IS_ENABLED(ifq)		0

src/libs/compat/freebsd_network/compat/sys/mbuf.h

@@ -66,6 +66,9 @@ struct mbuf {
 #define M_EXT			0x0001
 #define M_PKTHDR		0x0002
 
+#define M_BCAST			0x0200
+#define M_MCAST			0x0400
+
 #define CSUM_IP			0x0001
 #define CSUM_TCP		0x0002
 #define CSUM_UDP		0x0004

src/libs/compat/freebsd_network/if.c

@@ -0,0 +1,151 @@
+/*
+ * Copyright 2007, Hugo Santos. All Rights Reserved.
+ * Distributed under the terms of the MIT License.
+ *
+ * Authors:
+ *      Hugo Santos, [email protected]
+ *
+ * Some of this code is based on previous work by Marcus Overhagen.
+ */
+
+#include "device.h"
+
+#include <stdio.h>
+#include <sys/sockio.h>
+
+#include <compat/sys/bus.h>
+#include <compat/sys/kernel.h>
+
+#include <compat/net/if.h>
+#include <compat/net/if_var.h>
+#include <compat/sys/malloc.h>
+
+#include <compat/net/ethernet.h>
+
+struct ifnet *
+if_alloc(u_char type)
+{
+	struct ifnet *ifp = _kernel_malloc(sizeof(struct ifnet), M_ZERO);
+	if (ifp == NULL)
+		return NULL;
+
+	ifp->if_type = type;
+
+	IF_ADDR_LOCK_INIT(ifp);
+	return ifp;
+}
+
+
+void
+if_free(struct ifnet *ifp)
+{
+	IF_ADDR_LOCK_DESTROY(ifp);
+	_kernel_free(ifp);
+}
+
+
+void
+if_initname(struct ifnet *ifp, const char *name, int unit)
+{
+	ifp->if_dname = name;
+	ifp->if_dunit = unit;
+
+	/* XXX use a more Haiku friendly name here? */
+	snprintf(ifp->if_xname, IFNAMSIZ, "%s%d", name, unit);
+}
+
+
+void
+if_attach(struct ifnet *ifp)
+{
+	TAILQ_INIT(&ifp->if_addrhead);
+	TAILQ_INIT(&ifp->if_prefixhead);
+	TAILQ_INIT(&ifp->if_multiaddrs);
+
+	mtx_init(&ifp->if_snd.ifq_mtx, ifp->if_xname, NULL, MTX_DEF);
+}
+
+
+void
+if_detach(struct ifnet *ifp)
+{
+	mtx_destroy(&ifp->if_snd.ifq_mtx);
+}
+
+
+void
+if_start(struct ifnet *ifp)
+{
+#ifdef IFF_NEEDSGIANT
+	if (ifp->if_flags & IFF_NEEDSGIANT)
+		panic("freebsd compat.: unsupported giant requirement");
+#endif
+
+	ifp->if_start(ifp);
+}
+
+
+int
+ether_output(struct ifnet *ifp, struct mbuf *m, struct sockaddr *dst,
+	struct rtentry *rt0)
+{
+	int error;
+	IFQ_HANDOFF(ifp, m, error);
+	return error;
+}
+
+
+static void
+ether_input(struct ifnet *ifp, struct mbuf *m)
+{
+	device_t dev = NULL; /* XXX */
+
+	IF_ENQUEUE(&dev->receive_queue, m);
+	release_sem_etc(dev->receive_sem, 1, B_DO_NOT_RESCHEDULE);
+}
+
+
+void
+ether_ifattach(struct ifnet *ifp, const uint8_t *mac_address)
+{
+	ifp->if_addrlen = ETHER_ADDR_LEN;
+	ifp->if_hdrlen = ETHER_HDR_LEN;
+	if_attach(ifp);
+	ifp->if_mtu = ETHERMTU;
+	ifp->if_output = ether_output;
+	ifp->if_input = ether_input;
+	ifp->if_resolvemulti = NULL; /* done in the stack */
+
+	ifp->if_init(ifp->if_softc);
+}
+
+
+void
+ether_ifdetach(struct ifnet *ifp)
+{
+	if_detach(ifp);
+}
+
+
+int
+ether_ioctl(struct ifnet *ifp, int command, caddr_t data)
+{
+	struct ifreq *ifr = (struct ifreq *)data;
+
+	switch (command) {
+	case SIOCSIFMTU:
+		if (ifr->ifr_mtu > ETHERMTU)
+			return EINVAL;
+		else
+			;
+			/* need to fix our ifreq to work with C... */
+			/* ifp->ifr_mtu = ifr->ifr_mtu; */
+		break;
+
+	default:
+		return EINVAL;
+	}
+
+	return 0;
+}
+