66450ad78c
accessible as a sysctl. Submitted by: Vincent Jardin <vjardin@wanadoo.fr> MFC after: 2 weeks
157 lines
3.3 KiB
C
157 lines
3.3 KiB
C
/*
|
|
* ===================================
|
|
* HARP | Host ATM Research Platform
|
|
* ===================================
|
|
*
|
|
*
|
|
* This Host ATM Research Platform ("HARP") file (the "Software") is
|
|
* made available by Network Computing Services, Inc. ("NetworkCS")
|
|
* "AS IS". NetworkCS does not provide maintenance, improvements or
|
|
* support of any kind.
|
|
*
|
|
* NETWORKCS MAKES NO WARRANTIES OR REPRESENTATIONS, EXPRESS OR IMPLIED,
|
|
* INCLUDING, BUT NOT LIMITED TO, IMPLIED WARRANTIES OF MERCHANTABILITY
|
|
* AND FITNESS FOR A PARTICULAR PURPOSE, AS TO ANY ELEMENT OF THE
|
|
* SOFTWARE OR ANY SUPPORT PROVIDED IN CONNECTION WITH THIS SOFTWARE.
|
|
* In no event shall NetworkCS be responsible for any damages, including
|
|
* but not limited to consequential damages, arising from or relating to
|
|
* any use of the Software or related support.
|
|
*
|
|
* Copyright 1994-1998 Network Computing Services, Inc.
|
|
*
|
|
* Copies of this Software may be made, however, the above copyright
|
|
* notice must be reproduced on all copies.
|
|
*/
|
|
|
|
/*
|
|
* IP Over ATM Support
|
|
* -------------------
|
|
*
|
|
* Process stack and data input
|
|
*/
|
|
|
|
#include <sys/cdefs.h>
|
|
__FBSDID("$FreeBSD$");
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/socket.h>
|
|
#include <sys/socketvar.h>
|
|
#include <net/if.h>
|
|
#include <net/netisr.h>
|
|
#include <netinet/in.h>
|
|
#include <netinet/in_var.h>
|
|
#include <netatm/port.h>
|
|
#include <netatm/queue.h>
|
|
#include <netatm/atm.h>
|
|
#include <netatm/atm_sys.h>
|
|
#include <netatm/atm_sap.h>
|
|
#include <netatm/atm_cm.h>
|
|
#include <netatm/atm_if.h>
|
|
#include <netatm/atm_stack.h>
|
|
#include <netatm/atm_pcb.h>
|
|
#include <netatm/atm_var.h>
|
|
|
|
#include <netatm/ipatm/ipatm_var.h>
|
|
|
|
/*
|
|
* Process VCC Input Data
|
|
*
|
|
* Arguments:
|
|
* tok ipatm connection token (pointer to ipvcc)
|
|
* m pointer to input packet buffer chain
|
|
*
|
|
* Returns:
|
|
* none
|
|
*
|
|
*/
|
|
void
|
|
ipatm_cpcs_data(tok, m)
|
|
void *tok;
|
|
KBuffer *m;
|
|
{
|
|
struct ipvcc *ivp = tok;
|
|
|
|
if (ipatm_print) {
|
|
atm_pdu_print(m, "ipatm_input");
|
|
}
|
|
|
|
/*
|
|
* Handle input packet
|
|
*/
|
|
if (ivp->iv_state != IPVCC_ACTIVE) {
|
|
KB_FREEALL(m);
|
|
ipatm_stat.ias_rcvstate++;
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* IP packet - reset idle timer
|
|
*/
|
|
ivp->iv_idle = 0;
|
|
|
|
/*
|
|
* Pass packet to IP
|
|
*/
|
|
(void) ipatm_ipinput(ivp->iv_ipnif, m);
|
|
}
|
|
|
|
|
|
/*
|
|
* IP Input Packet Handler
|
|
*
|
|
* All IP packets received from various ATM sources will be sent here
|
|
* for final queuing to the IP layer.
|
|
*
|
|
* Arguments:
|
|
* inp pointer to packet's receiving IP network interface
|
|
* m pointer to packet buffer chain
|
|
*
|
|
* Returns:
|
|
* 0 packet successfully queued to IP layer
|
|
* else error queuing packet, buffer chain freed
|
|
*
|
|
*/
|
|
int
|
|
ipatm_ipinput(inp, m)
|
|
struct ip_nif *inp;
|
|
KBuffer *m;
|
|
{
|
|
|
|
if (ipatm_print) {
|
|
atm_pdu_print(m, "ipatm_ipinput");
|
|
}
|
|
|
|
#ifdef DIAGNOSTIC
|
|
if (!KB_ISPKT(m)) {
|
|
panic("ipatm_ipinput: no packet header");
|
|
}
|
|
{
|
|
int cnt = 0;
|
|
KBuffer *m0 = m;
|
|
|
|
while (m0) {
|
|
cnt += KB_LEN(m0);
|
|
m0 = KB_NEXT(m0);
|
|
}
|
|
if (m->m_pkthdr.len != cnt) {
|
|
panic("ipatm_ipinput: packet length incorrect");
|
|
}
|
|
}
|
|
#endif
|
|
/*
|
|
* Save the input ifnet pointer in the packet header
|
|
*/
|
|
m->m_pkthdr.rcvif = (struct ifnet *)inp->inf_nif;
|
|
|
|
/*
|
|
* Finally, hand packet off to IP.
|
|
*
|
|
* NB: Since we're already in the softint kernel state, we
|
|
* just call IP directly to avoid the extra unnecessary
|
|
* kernel scheduling.
|
|
*/
|
|
netisr_dispatch(NETISR_IP, m);
|
|
return (0);
|
|
}
|