diff options
| -rw-r--r-- | sys/conf/NOTES | 1 | ||||
| -rw-r--r-- | sys/conf/files | 1 | ||||
| -rw-r--r-- | sys/conf/options | 1 | ||||
| -rw-r--r-- | sys/modules/netgraph/atmllc/Makefile | 6 | ||||
| -rw-r--r-- | sys/netgraph/ng_atmllc.c | 278 | ||||
| -rw-r--r-- | sys/netgraph/ng_atmllc.h | 45 |
6 files changed, 332 insertions, 0 deletions
diff --git a/sys/conf/NOTES b/sys/conf/NOTES index c898911..1cd934c 100644 --- a/sys/conf/NOTES +++ b/sys/conf/NOTES @@ -409,6 +409,7 @@ options LIBMCHAIN # corresponding man page, e.g., ng_async(8). options NETGRAPH #netgraph(4) system options NETGRAPH_ASYNC +options NETGRAPH_ATMLLC options NETGRAPH_BPF options NETGRAPH_BRIDGE options NETGRAPH_CISCO diff --git a/sys/conf/files b/sys/conf/files index 846d192..73d1df7 100644 --- a/sys/conf/files +++ b/sys/conf/files @@ -1402,6 +1402,7 @@ contrib/ngatm/netnatm/sig/sig_unimsgcpy.c optional ngatm_uni contrib/ngatm/netnatm/sig/sig_verify.c optional ngatm_uni netgraph/ng_UI.c optional netgraph_UI netgraph/ng_async.c optional netgraph_async +netgraph/ng_atmllc.c optional netgraph_atmllc netgraph/ng_base.c optional netgraph netgraph/ng_bpf.c optional netgraph_bpf net/bpf_filter.c optional netgraph_bpf diff --git a/sys/conf/options b/sys/conf/options index ee6b4d0..f163ee3 100644 --- a/sys/conf/options +++ b/sys/conf/options @@ -376,6 +376,7 @@ XBONEHACK # option below. Each type has its own man page, e.g. ng_async(4). NETGRAPH NETGRAPH_ASYNC opt_netgraph.h +NETGRAPH_ATMLLC opt_netgraph.h NETGRAPH_BPF opt_netgraph.h NETGRAPH_BRIDGE opt_netgraph.h NETGRAPH_CISCO opt_netgraph.h diff --git a/sys/modules/netgraph/atmllc/Makefile b/sys/modules/netgraph/atmllc/Makefile new file mode 100644 index 0000000..fd47b5c --- /dev/null +++ b/sys/modules/netgraph/atmllc/Makefile @@ -0,0 +1,6 @@ +# $FreeBSD$ + +KMOD= ng_atmllc +SRCS= ng_atmllc.c + +.include <bsd.kmod.mk> diff --git a/sys/netgraph/ng_atmllc.c b/sys/netgraph/ng_atmllc.c new file mode 100644 index 0000000..e346c7b --- /dev/null +++ b/sys/netgraph/ng_atmllc.c @@ -0,0 +1,278 @@ +/* + * Copyright (c) 2003-2004 Benno Rice <benno@eloquent.com.au> + * 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 ``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 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. + * + * $FreeBSD$ + */ + +#include <sys/param.h> +#include <sys/systm.h> +#include <sys/kernel.h> +#include <sys/malloc.h> +#include <sys/mbuf.h> +#include <sys/socket.h> +#include <sys/sockio.h> + +#include <netgraph/ng_message.h> +#include <netgraph/netgraph.h> +#include <netgraph/ng_atmllc.h> + +#include <net/if.h> +#include <net/ethernet.h> /* for M_HASFCS and ETHER_HDR_LEN */ +#include <net/if_atm.h> /* for struct atmllc */ + +#define NG_ATMLLC_HEADER "\252\252\3\0\200\302" +#define NG_ATMLLC_HEADER_LEN (sizeof(struct atmllc)) +#define NG_ATMLLC_TYPE_ETHERNET_FCS 0x0001 +#define NG_ATMLLC_TYPE_FDDI_FCS 0x0004 +#define NG_ATMLLC_TYPE_ETHERNET_NOFCS 0x0007 +#define NG_ATMLLC_TYPE_FDDI_NOFCS 0x000A + +struct ng_atmllc_priv { + hook_p atm; + hook_p ether; + hook_p fddi; +}; + +/* Netgraph methods. */ +static ng_constructor_t ng_atmllc_constructor; +static ng_shutdown_t ng_atmllc_shutdown; +static ng_rcvmsg_t ng_atmllc_rcvmsg; +static ng_newhook_t ng_atmllc_newhook; +static ng_rcvdata_t ng_atmllc_rcvdata; +static ng_disconnect_t ng_atmllc_disconnect; + +static struct ng_type ng_atmllc_typestruct = { + NG_ABI_VERSION, + NG_ATMLLC_NODE_TYPE, + NULL, + ng_atmllc_constructor, + ng_atmllc_rcvmsg, + ng_atmllc_shutdown, + ng_atmllc_newhook, + NULL, + NULL, + ng_atmllc_rcvdata, + ng_atmllc_disconnect, + NULL +}; +NETGRAPH_INIT(atmllc, &ng_atmllc_typestruct); + +static int +ng_atmllc_constructor(node_p node) +{ + struct ng_atmllc_priv *priv; + + MALLOC(priv, struct ng_atmllc_priv *, sizeof(*priv), M_NETGRAPH, + M_NOWAIT | M_ZERO); + if (priv == NULL) { + return (ENOMEM); + } + + NG_NODE_SET_PRIVATE(node, priv); + + return (0); +} + +static int +ng_atmllc_rcvmsg(node_p node, item_p item, hook_p lasthook) +{ + struct ng_mesg *msg; + int error; + + error = 0; + NGI_GET_MSG(item, msg); + msg->header.flags |= NGF_RESP; + NG_RESPOND_MSG(error, node, item, msg); + return (error); +} + +static int +ng_atmllc_shutdown(node_p node) +{ + struct ng_atmllc_priv *priv; + + priv = NG_NODE_PRIVATE(node); + + FREE(priv, M_NETGRAPH); + + NG_NODE_UNREF(node); + + return (0); +} + +static int +ng_atmllc_newhook(node_p node, hook_p hook, const char *name) +{ + struct ng_atmllc_priv *priv; + + priv = NG_NODE_PRIVATE(node); + + if (strcmp(name, NG_ATMLLC_HOOK_ATM) == 0) { + if (priv->atm != NULL) { + return (EISCONN); + } + priv->atm = hook; + } else if (strcmp(name, NG_ATMLLC_HOOK_ETHER) == 0) { + if (priv->ether != NULL) { + return (EISCONN); + } + priv->ether = hook; + } else if (strcmp(name, NG_ATMLLC_HOOK_FDDI) == 0) { + if (priv->fddi != NULL) { + return (EISCONN); + } + priv->fddi = hook; + } else { + return (EINVAL); + } + + return (0); +} + +static int +ng_atmllc_rcvdata(hook_p hook, item_p item) +{ + struct ng_atmllc_priv *priv; + struct mbuf *m; + struct atmllc *hdr; + hook_p outhook; + u_int padding; + int error; + + priv = NG_NODE_PRIVATE(NG_HOOK_NODE(hook)); + m = NGI_M(item); + outhook = NULL; + padding = 0; + + if (hook == priv->atm) { + /* Ditch the psuedoheader. */ + hdr = mtod(m, struct atmllc *); + /* m_adj(m, sizeof(struct atm_pseudohdr)); */ + + /* + * Make sure we have the LLC and ethernet headers. + * The ethernet header size is slightly larger than the FDDI + * header, which is convenient. + */ + if (m->m_len < sizeof(struct atmllc) + ETHER_HDR_LEN) { + m = m_pullup(m, sizeof(struct atmllc) + ETHER_HDR_LEN); + if (m == NULL) { + return (ENOMEM); + } + } + + /* Decode the LLC header. */ + hdr = mtod(m, struct atmllc *); + if (ATM_LLC_TYPE(hdr) == NG_ATMLLC_TYPE_ETHERNET_NOFCS) { + m->m_flags &= ~M_HASFCS; + outhook = priv->ether; + padding = 2; + } else if (ATM_LLC_TYPE(hdr) == NG_ATMLLC_TYPE_ETHERNET_FCS) { + m->m_flags |= M_HASFCS; + outhook = priv->ether; + padding = 2; + } else if (ATM_LLC_TYPE(hdr) == NG_ATMLLC_TYPE_FDDI_NOFCS) { + m->m_flags &= ~M_HASFCS; + outhook = priv->fddi; + padding = 3; + } else if (ATM_LLC_TYPE(hdr) == NG_ATMLLC_TYPE_FDDI_FCS) { + m->m_flags |= M_HASFCS; + outhook = priv->fddi; + padding = 3; + } else { + printf("ng_atmllc: unknown type: %x\n", + ATM_LLC_TYPE(hdr)); + } + + /* Remove the LLC header and any padding*/ + m_adj(m, sizeof(struct atmllc) + padding); + } else if (hook == priv->ether) { + /* Add the LLC header */ + M_PREPEND(m, NG_ATMLLC_HEADER_LEN + 2, M_DONTWAIT); + if (m == NULL) { + printf("ng_atmllc: M_PREPEND failed\n"); + NG_FREE_ITEM(item); + return (ENOMEM); + } + hdr = mtod(m, struct atmllc *); + bzero((void *)hdr, sizeof(struct atmllc) + 2); + bcopy(NG_ATMLLC_HEADER, hdr->llchdr, 6); + if ((m->m_flags & M_HASFCS) != 0) { + ATM_LLC_SETTYPE(hdr, NG_ATMLLC_TYPE_ETHERNET_FCS); + } else { + ATM_LLC_SETTYPE(hdr, NG_ATMLLC_TYPE_ETHERNET_NOFCS); + } + outhook = priv->atm; + } else if (hook == priv->fddi) { + /* Add the LLC header */ + M_PREPEND(m, NG_ATMLLC_HEADER_LEN + 3, M_DONTWAIT); + if (m == NULL) { + printf("ng_atmllc: M_PREPEND failed\n"); + NG_FREE_ITEM(item); + return (ENOMEM); + } + hdr = mtod(m, struct atmllc *); + bzero((void *)hdr, sizeof(struct atmllc) + 3); + bcopy(NG_ATMLLC_HEADER, hdr->llchdr, 6); + if ((m->m_flags & M_HASFCS) != 0) { + ATM_LLC_SETTYPE(hdr, NG_ATMLLC_TYPE_FDDI_FCS); + } else { + ATM_LLC_SETTYPE(hdr, NG_ATMLLC_TYPE_FDDI_NOFCS); + } + outhook = priv->atm; + } + + if (outhook == NULL) { + NG_FREE_ITEM(item); + return (0); + } + + NG_FWD_NEW_DATA(error, item, outhook, m); + return (error); +} + +static int +ng_atmllc_disconnect(hook_p hook) +{ + node_p node; + struct ng_atmllc_priv *priv; + + node = NG_HOOK_NODE(hook); + priv = NG_NODE_PRIVATE(node); + + if (hook == priv->atm) { + priv->atm = NULL; + } else if (hook == priv->ether) { + priv->ether = NULL; + } else if (hook == priv->fddi) { + priv->fddi = NULL; + } + + if (NG_NODE_NUMHOOKS(node) == 0 && NG_NODE_IS_VALID(node)) { + ng_rmnode_self(node); + } + + return (0); +} diff --git a/sys/netgraph/ng_atmllc.h b/sys/netgraph/ng_atmllc.h new file mode 100644 index 0000000..f9aed55 --- /dev/null +++ b/sys/netgraph/ng_atmllc.h @@ -0,0 +1,45 @@ +/* + * Copyright (c) 2003-2004 Benno Rice <benno@FreeBSD.org> + * 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 ``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 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. + * + * $FreeBSD$ + */ + +#ifndef _NETGRAPH_ATMLLC_H_ +#define _NETGRAPH_ATMLLC_H_ + +/* Node type name and magic cookie. */ +#define NG_ATMLLC_NODE_TYPE "atmllc" +#define NGM_ATMLLC_COOKIE 1065246274 + +/* Hook names. */ +#define NG_ATMLLC_HOOK_ATM "atm" +#define NG_ATMLLC_HOOK_ETHER "ether" +#define NG_ATMLLC_HOOK_802_4 "ieee8024" +#define NG_ATMLLC_HOOK_802_5 "ieee8025" +#define NG_ATMLLC_HOOK_802_6 "ieee8026" +#define NG_ATMLLC_HOOK_FDDI "fddi" +#define NG_ATMLLC_HOOK_BPDU "bpdu" + +#endif /* _NETGRAPH_ATMLLC_H_ */ |
