diff options
Diffstat (limited to 'sys/i4b/layer2/i4b_sframe.c')
| -rw-r--r-- | sys/i4b/layer2/i4b_sframe.c | 207 |
1 files changed, 0 insertions, 207 deletions
diff --git a/sys/i4b/layer2/i4b_sframe.c b/sys/i4b/layer2/i4b_sframe.c deleted file mode 100644 index afe59eb7d275..000000000000 --- a/sys/i4b/layer2/i4b_sframe.c +++ /dev/null @@ -1,207 +0,0 @@ -/*- - * Copyright (c) 1997, 2002 Hellmuth Michaelis. All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * - * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND - * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE - * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS - * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY - * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF - * SUCH DAMAGE. - */ - -/*--------------------------------------------------------------------------- - * - * i4b_sframe.c - s frame handling routines - * ---------------------------------------- - * last edit-date: [Sat Mar 9 17:52:06 2002] - * - *---------------------------------------------------------------------------*/ - -#include <sys/cdefs.h> -__FBSDID("$FreeBSD$"); - -#include <sys/param.h> -#include <sys/systm.h> -#include <sys/mbuf.h> -#include <sys/socket.h> -#include <net/if.h> - -#include <i4b/include/i4b_debug.h> - -#include <i4b/include/i4b_l1l2.h> -#include <i4b/include/i4b_mbuf.h> - -#include <i4b/layer2/i4b_l2.h> -#include <i4b/layer2/i4b_l2fsm.h> - -/*---------------------------------------------------------------------------* - * process s frame - *---------------------------------------------------------------------------*/ -void -i4b_rxd_s_frame(int unit, struct mbuf *m) -{ - l2_softc_t *l2sc = &l2_softc[unit]; - u_char *ptr = m->m_data; - - if(!((l2sc->tei_valid == TEI_VALID) && - (l2sc->tei == GETTEI(*(ptr+OFF_TEI))))) - { - i4b_Dfreembuf(m); - return; - } - - l2sc->rxd_CR = GETCR(*(ptr + OFF_SAPI)); - l2sc->rxd_PF = GETSPF(*(ptr + OFF_SNR)); - l2sc->rxd_NR = GETSNR(*(ptr + OFF_SNR)); - - i4b_rxd_ack(l2sc, l2sc->rxd_NR); - - switch(*(ptr + OFF_SRCR)) - { - case RR: - l2sc->stat.rx_rr++; /* update statistics */ - NDBGL2(L2_S_MSG, "rx'd RR, N(R) = %d", l2sc->rxd_NR); - i4b_next_l2state(l2sc, EV_RXRR); - break; - - case RNR: - l2sc->stat.rx_rnr++; /* update statistics */ - NDBGL2(L2_S_MSG, "rx'd RNR, N(R) = %d", l2sc->rxd_NR); - i4b_next_l2state(l2sc, EV_RXRNR); - break; - - case REJ: - l2sc->stat.rx_rej++; /* update statistics */ - NDBGL2(L2_S_MSG, "rx'd REJ, N(R) = %d", l2sc->rxd_NR); - i4b_next_l2state(l2sc, EV_RXREJ); - break; - - default: - l2sc->stat.err_rx_bads++; /* update statistics */ - NDBGL2(L2_S_ERR, "ERROR, unknown code, frame = "); - i4b_print_frame(m->m_len, m->m_data); - break; - } - i4b_Dfreembuf(m); -} - -/*---------------------------------------------------------------------------* - * transmit RR command - *---------------------------------------------------------------------------*/ -void -i4b_tx_rr_command(l2_softc_t *l2sc, pbit_t pbit) -{ - struct mbuf *m; - - NDBGL2(L2_S_MSG, "tx RR, unit = %d", l2sc->unit); - - m = i4b_build_s_frame(l2sc, CR_CMD_TO_NT, pbit, RR); - - PH_Data_Req(l2sc->unit, m, MBUF_FREE); - - l2sc->stat.tx_rr++; /* update statistics */ -} - -/*---------------------------------------------------------------------------* - * transmit RR response - *---------------------------------------------------------------------------*/ -void -i4b_tx_rr_response(l2_softc_t *l2sc, fbit_t fbit) -{ - struct mbuf *m; - - NDBGL2(L2_S_MSG, "tx RR, unit = %d", l2sc->unit); - - m = i4b_build_s_frame(l2sc, CR_RSP_TO_NT, fbit, RR); - - PH_Data_Req(l2sc->unit, m, MBUF_FREE); - - l2sc->stat.tx_rr++; /* update statistics */ -} - -/*---------------------------------------------------------------------------* - * transmit RNR command - *---------------------------------------------------------------------------*/ -void -i4b_tx_rnr_command(l2_softc_t *l2sc, pbit_t pbit) -{ - struct mbuf *m; - - NDBGL2(L2_S_MSG, "tx RNR, unit = %d", l2sc->unit); - - m = i4b_build_s_frame(l2sc, CR_CMD_TO_NT, pbit, RNR); - - PH_Data_Req(l2sc->unit, m, MBUF_FREE); - - l2sc->stat.tx_rnr++; /* update statistics */ -} - -/*---------------------------------------------------------------------------* - * transmit RNR response - *---------------------------------------------------------------------------*/ -void -i4b_tx_rnr_response(l2_softc_t *l2sc, fbit_t fbit) -{ - struct mbuf *m; - - NDBGL2(L2_S_MSG, "tx RNR, unit = %d", l2sc->unit); - - m = i4b_build_s_frame(l2sc, CR_RSP_TO_NT, fbit, RNR); - - PH_Data_Req(l2sc->unit, m, MBUF_FREE); - - l2sc->stat.tx_rnr++; /* update statistics */ -} - -/*---------------------------------------------------------------------------* - * transmit REJ response - *---------------------------------------------------------------------------*/ -void -i4b_tx_rej_response(l2_softc_t *l2sc, fbit_t fbit) -{ - struct mbuf *m; - - NDBGL2(L2_S_MSG, "tx REJ, unit = %d", l2sc->unit); - - m = i4b_build_s_frame(l2sc, CR_RSP_TO_NT, fbit, REJ); - - PH_Data_Req(l2sc->unit, m, MBUF_FREE); - - l2sc->stat.tx_rej++; /* update statistics */ -} - -/*---------------------------------------------------------------------------* - * build S-frame for sending - *---------------------------------------------------------------------------*/ -struct mbuf * -i4b_build_s_frame(l2_softc_t *l2sc, crbit_to_nt_t crbit, pbit_t pbit, u_char type) -{ - struct mbuf *m; - - if((m = i4b_Dgetmbuf(S_FRAME_LEN)) == NULL) - return(NULL); - - PUTSAPI(SAPI_CCP, crbit, m->m_data[OFF_SAPI]); - - PUTTEI(l2sc->tei, m->m_data[OFF_TEI]); - - m->m_data[OFF_SRCR] = type; - - m->m_data[OFF_SNR] = (l2sc->vr << 1) | (pbit & 0x01); - - return(m); -} |