diff --git a/include/Makefile.am b/include/Makefile.am index d39998c..9f9c3b3 100644 --- a/include/Makefile.am +++ b/include/Makefile.am @@ -32,6 +32,7 @@ nobase_libnlinclude_HEADERS = \ netlink/netlink.h \ netlink/object.h \ netlink/route/action.h \ + netlink/route/act/mirred.h \ netlink/route/cls/ematch/cmp.h \ netlink/route/cls/ematch/meta.h \ netlink/route/cls/ematch/nbyte.h \ diff --git a/include/linux/pkt_act.h b/include/linux/pkt_act.h new file mode 100644 index 0000000..ba8c860 --- /dev/null +++ b/include/linux/pkt_act.h @@ -0,0 +1,32 @@ +#ifndef __LINUX_PKT_ACT_H +#define __LINUX_PKT_ACT_H + +#include +#include + +#define TCA_ACT_MIRRED 8 +#define TCA_EGRESS_REDIR 1 /* packet redirect to EGRESS*/ +#define TCA_EGRESS_MIRROR 2 /* mirror packet to EGRESS */ +#define TCA_INGRESS_REDIR 3 /* packet redirect to INGRESS*/ +#define TCA_INGRESS_MIRROR 4 /* mirror packet to INGRESS */ + +struct tc_mirred { + tc_gen; + int eaction; /* one of IN/EGRESS_MIRROR/REDIR */ + __u32 ifindex; /* ifindex of egress port */ +}; + +enum { + TCA_MIRRED_UNSPEC, + TCA_MIRRED_TM, + TCA_MIRRED_PARMS, + __TCA_MIRRED_MAX +}; +#define TCA_MIRRED_MAX (__TCA_MIRRED_MAX - 1) + +struct rtnl_mirred +{ + struct tc_mirred m_parm; +}; + +#endif diff --git a/include/netlink/route/act/mirred.h b/include/netlink/route/act/mirred.h new file mode 100644 index 0000000..20a777c --- /dev/null +++ b/include/netlink/route/act/mirred.h @@ -0,0 +1,31 @@ +/* + * netlink/route/cls/mirred.h mirred action + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation version 2.1 + * of the License. + * + * Copyright (c) 2013 Cong Wang + */ + +#ifndef NETLINK_MIRRED_H_ +#define NETLINK_MIRRED_H_ + +#include +#include +#include + +#ifdef __cplusplus +extern "C" { +#endif + +extern int rtnl_mirred_set_action(struct rtnl_act *, int); +extern int rtnl_mirred_set_index(struct rtnl_act *, uint32_t); +extern int rtnl_mirred_set_policy(struct rtnl_act *, int); + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/include/netlink/route/action.h b/include/netlink/route/action.h index be52767..8e265ea 100644 --- a/include/netlink/route/action.h +++ b/include/netlink/route/action.h @@ -16,6 +16,7 @@ #include #include #include +#include #ifdef __cplusplus extern "C" { diff --git a/lib/Makefile.am b/lib/Makefile.am index 949d3ac..5b1a002 100644 --- a/lib/Makefile.am +++ b/lib/Makefile.am @@ -68,6 +68,8 @@ libnl_route_3_la_SOURCES = \ route/cls/fw.c route/cls/police.c route/cls/u32.c route/cls/basic.c \ route/cls/cgroup.c \ \ + route/act/mirred.c \ + \ route/cls/ematch.c \ route/cls/ematch/container.c route/cls/ematch/cmp.c \ route/cls/ematch/nbyte.c route/cls/ematch/text.c \ diff --git a/lib/route/act/mirred.c b/lib/route/act/mirred.c new file mode 100644 index 0000000..43b223f --- /dev/null +++ b/lib/route/act/mirred.c @@ -0,0 +1,214 @@ +/* + * lib/route/cls/mirred.c mirred action + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation version 2.1 + * of the License. + * + * Copyright (c) 2013 Cong Wang + */ + +/** + * @ingroup act + * @defgroup act_mirred Mirror and Redirect + * + * @{ + */ + +#include +#include +#include +#include +#include +#include +#include + +static struct nla_policy mirred_policy[TCA_MIRRED_MAX + 1] = { + [TCA_MIRRED_PARMS] = { .minlen = sizeof(struct tc_mirred) }, +}; + +static int mirred_msg_parser(struct rtnl_tc *tc, void *data) +{ + struct rtnl_mirred *u = data; + struct nlattr *tb[TCA_MIRRED_MAX + 1]; + int err; + + err = tca_parse(tb, TCA_MIRRED_MAX, tc, mirred_policy); + if (err < 0) + return err; + + if (!tb[TCA_MIRRED_PARMS]) + return -NLE_MISSING_ATTR; + + nla_memcpy(&u->m_parm, tb[TCA_MIRRED_PARMS], sizeof(u->m_parm)); + return 0; +} + +static void mirred_free_data(struct rtnl_tc *tc, void *data) +{ +} + +static int mirred_clone(void *_dst, void *_src) +{ + struct rtnl_mirred *dst = _dst, *src = _src; + + memcpy(&dst->m_parm, &src->m_parm, sizeof(src->m_parm)); + return 0; +} + +static void mirred_dump_line(struct rtnl_tc *tc, void *data, + struct nl_dump_params *p) +{ + struct rtnl_mirred *u = data; + if (!u) + return; + + nl_dump(p, " index %u", u->m_parm.ifindex); + + if (u->m_parm.eaction == TCA_EGRESS_MIRROR) + nl_dump(p, " egress mirror"); + else if (u->m_parm.eaction == TCA_EGRESS_REDIR) + nl_dump(p, " egress redirect"); + + switch(u->m_parm.action) { + case TC_ACT_UNSPEC: + nl_dump(p, " unspecified"); + break; + case TC_ACT_PIPE: + nl_dump(p, " pipe"); + break; + case TC_ACT_STOLEN: + nl_dump(p, " stolen"); + break; + case TC_ACT_SHOT: + nl_dump(p, " shot"); + break; + case TC_ACT_QUEUED: + nl_dump(p, " queued"); + break; + case TC_ACT_REPEAT: + nl_dump(p, " repeat"); + break; + } +} + +static void mirred_dump_details(struct rtnl_tc *tc, void *data, + struct nl_dump_params *p) +{ +} + +static void mirred_dump_stats(struct rtnl_tc *tc, void *data, + struct nl_dump_params *p) +{ + struct rtnl_mirred *u = data; + + if (!u) + return; + /* TODO */ +} + + +static int mirred_msg_fill(struct rtnl_tc *tc, void *data, struct nl_msg *msg) +{ + struct rtnl_mirred *u = data; + + if (!u) + return 0; + + NLA_PUT(msg, TCA_MIRRED_PARMS, sizeof(u->m_parm), &u->m_parm); + return 0; + +nla_put_failure: + return -NLE_NOMEM; +} + +/** + * @name Attribute Modifications + * @{ + */ + +int rtnl_mirred_set_action(struct rtnl_act *act, int action) +{ + struct rtnl_mirred *u; + + if (!(u = (struct rtnl_mirred *) rtnl_tc_data(TC_CAST(act)))) + return -NLE_NOMEM; + + if (action > TCA_INGRESS_MIRROR || action < TCA_EGRESS_REDIR) + return -NLE_INVAL; + + switch (action) { + case TCA_EGRESS_MIRROR: + case TCA_EGRESS_REDIR: + u->m_parm.eaction = action; + break; + case TCA_INGRESS_REDIR: + case TCA_INGRESS_MIRROR: + default: + return NLE_OPNOTSUPP; + } + return 0; +} + +int rtnl_mirred_set_index(struct rtnl_act *act, uint32_t link) +{ + struct rtnl_mirred *u; + + if (!(u = (struct rtnl_mirred *) rtnl_tc_data(TC_CAST(act)))) + return -NLE_NOMEM; + + u->m_parm.ifindex = link; + return 0; +} + +int rtnl_mirred_set_policy(struct rtnl_act *act, int policy) +{ + struct rtnl_mirred *u; + + if (!(u = (struct rtnl_mirred *) rtnl_tc_data(TC_CAST(act)))) + return -NLE_NOMEM; + + if (policy > TC_POLICE_PIPE || policy < TC_POLICE_OK) + return -NLE_INVAL; + + switch (u->m_parm.eaction) { + case TCA_EGRESS_MIRROR: + case TCA_EGRESS_REDIR: + u->m_parm.action = policy; + break; + case TCA_INGRESS_REDIR: + case TCA_INGRESS_MIRROR: + default: + return NLE_OPNOTSUPP; + } + return 0; +} +/** @} */ + +static struct rtnl_tc_ops mirred_ops = { + .to_kind = "mirred", + .to_type = RTNL_TC_TYPE_ACT, + .to_size = sizeof(struct rtnl_mirred), + .to_msg_parser = mirred_msg_parser, + .to_free_data = mirred_free_data, + .to_clone = mirred_clone, + .to_msg_fill = mirred_msg_fill, + .to_dump = { + [NL_DUMP_LINE] = mirred_dump_line, + [NL_DUMP_DETAILS] = mirred_dump_details, + [NL_DUMP_STATS] = mirred_dump_stats, + }, +}; + +static void __init mirred_init(void) +{ + rtnl_tc_register(&mirred_ops); +} + +static void __exit mirred_exit(void) +{ + rtnl_tc_unregister(&mirred_ops); +} + +/** @} */