gact.c

/* SPDX-License-Identifier: LGPL-2.1-only */
/*
 * Copyright (c) 2016 Sushma Sitaram <sushma.sitaram@intel.com>
 */
 
/**
 * @ingroup act
 * @defgroup act_gact GACT Editing
 *
 * @{
 */
 
#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/gact.h>
 
static struct nla_policy gact_policy[TCA_GACT_MAX + 1] = {
        [TCA_GACT_PARMS]             = { .minlen = sizeof(struct tc_gact) },
};
 
static int gact_msg_parser(struct rtnl_tc *tc, void *data)
{
        struct rtnl_gact *u = data;
        struct nlattr *tb[TCA_GACT_MAX + 1];
        int err;
 
        err = tca_parse(tb, TCA_GACT_MAX, tc, gact_policy);
        if (err < 0)
                return err;
 
        if (!tb[TCA_GACT_PARMS])
                return -NLE_MISSING_ATTR;
 
        nla_memcpy(&u->g_parm, tb[TCA_GACT_PARMS], sizeof(u->g_parm));
 
        return 0;
}
 
static void gact_free_data(struct rtnl_tc *tc, void *data)
{
}
 
static void gact_dump_line(struct rtnl_tc *tc, void *data,
                          struct nl_dump_params *p)
{
        struct rtnl_gact *u = data;
 
        if (!u)
                return;
 
        switch(u->g_parm.action){
        case TC_ACT_UNSPEC:
                nl_dump(p, " continue");
                break;
        case TC_ACT_SHOT:
                nl_dump(p, " drop");
                break;
        case TC_ACT_RECLASSIFY:
                nl_dump(p, " reclassify");
                break;
        case TC_ACT_OK:
                nl_dump(p, " pass");
                break;
        }
 
}
 
static void gact_dump_details(struct rtnl_tc *tc, void *data,
                             struct nl_dump_params *p)
{
}
 
static void gact_dump_stats(struct rtnl_tc *tc, void *data,
                           struct nl_dump_params *p)
{
        struct rtnl_gact *u = data;
 
        if (!u)
                return;
        /* TODO */
}
 
 
static int gact_msg_fill(struct rtnl_tc *tc, void *data, struct nl_msg *msg)
{
        struct rtnl_gact *u = data;
 
        if (!u)
                return 0;
 
        NLA_PUT(msg, TCA_GACT_PARMS, sizeof(u->g_parm), &u->g_parm);
 
        return 0;
 
nla_put_failure:
        return -NLE_NOMEM;
}
 
/**
 * @name Attribute Modifications
 * @{
 */
 
int rtnl_gact_set_action(struct rtnl_act *act, int action)
{
        struct rtnl_gact *u;
 
        if (!(u = (struct rtnl_gact *) rtnl_tc_data(TC_CAST(act))))
                return -NLE_NOMEM;
 
        u->g_parm.action = action;
 
        return 0;
}
 
int rtnl_gact_get_action(struct rtnl_act *act)
{
        struct rtnl_gact *u;
 
        if (!(u = (struct rtnl_gact *) rtnl_tc_data(TC_CAST(act))))
                return -NLE_NOMEM;
        return u->g_parm.action;
}
 
 
/** @} */
 
static struct rtnl_tc_ops gact_ops = {
        .to_kind                = "gact",
        .to_type                = RTNL_TC_TYPE_ACT,
        .to_size                = sizeof(struct rtnl_gact),
        .to_msg_parser          = gact_msg_parser,
        .to_free_data           = gact_free_data,
        .to_clone               = NULL,
        .to_msg_fill            = gact_msg_fill,
        .to_dump = {
            [NL_DUMP_LINE]      = gact_dump_line,
            [NL_DUMP_DETAILS]   = gact_dump_details,
            [NL_DUMP_STATS]     = gact_dump_stats,
        },
};
 
static void __init gact_init(void)
{
        rtnl_tc_register(&gact_ops);
}
 
static void __exit gact_exit(void)
{
        rtnl_tc_unregister(&gact_ops);
}
 
/** @} */