| /* |
| * lib/route/act/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 <xiyou.wangcong@gmail.com> |
| */ |
| |
| /** |
| * @ingroup act |
| * @defgroup act_mirred Mirror and Redirect |
| * |
| * @{ |
| */ |
| |
| #include <netlink-private/netlink.h> |
| #include <netlink-private/tc.h> |
| #include <netlink/netlink.h> |
| #include <netlink/attr.h> |
| #include <netlink/utils.h> |
| #include <netlink-private/route/tc-api.h> |
| #include <netlink/route/act/mirred.h> |
| |
| 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_get_action(struct rtnl_act *act) |
| { |
| struct rtnl_mirred *u; |
| |
| if (!(u = (struct rtnl_mirred *) rtnl_tc_data(TC_CAST(act)))) |
| return -NLE_NOMEM; |
| return u->m_parm.eaction; |
| } |
| |
| int rtnl_mirred_set_ifindex(struct rtnl_act *act, uint32_t ifindex) |
| { |
| struct rtnl_mirred *u; |
| |
| if (!(u = (struct rtnl_mirred *) rtnl_tc_data(TC_CAST(act)))) |
| return -NLE_NOMEM; |
| |
| u->m_parm.ifindex = ifindex; |
| return 0; |
| } |
| |
| uint32_t rtnl_mirred_get_ifindex(struct rtnl_act *act) |
| { |
| struct rtnl_mirred *u; |
| |
| if ((u = (struct rtnl_mirred *) rtnl_tc_data(TC_CAST(act)))) |
| return u->m_parm.ifindex; |
| 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_ACT_REPEAT || policy < TC_ACT_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; |
| } |
| |
| int rtnl_mirred_get_policy(struct rtnl_act *act) |
| { |
| struct rtnl_mirred *u; |
| |
| if (!(u = (struct rtnl_mirred *) rtnl_tc_data(TC_CAST(act)))) |
| return -NLE_NOMEM; |
| return u->m_parm.action; |
| } |
| |
| /** @} */ |
| |
| 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); |
| } |
| |
| /** @} */ |