^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0-or-later
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * net/sched/act_gact.c Generic actions
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * copyright Jamal Hadi Salim (2002-4)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) #include <linux/types.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <linux/string.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <linux/errno.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <linux/skbuff.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <linux/rtnetlink.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <linux/init.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <net/netlink.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include <net/pkt_sched.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include <net/pkt_cls.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #include <linux/tc_act/tc_gact.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #include <net/tc_act/tc_gact.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) static unsigned int gact_net_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) static struct tc_action_ops act_gact_ops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) #ifdef CONFIG_GACT_PROB
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) static int gact_net_rand(struct tcf_gact *gact)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) smp_rmb(); /* coupled with smp_wmb() in tcf_gact_init() */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) if (prandom_u32() % gact->tcfg_pval)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) return gact->tcf_action;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) return gact->tcfg_paction;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) static int gact_determ(struct tcf_gact *gact)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) u32 pack = atomic_inc_return(&gact->packets);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) smp_rmb(); /* coupled with smp_wmb() in tcf_gact_init() */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) if (pack % gact->tcfg_pval)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) return gact->tcf_action;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) return gact->tcfg_paction;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) typedef int (*g_rand)(struct tcf_gact *gact);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) static g_rand gact_rand[MAX_RAND] = { NULL, gact_net_rand, gact_determ };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) #endif /* CONFIG_GACT_PROB */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) static const struct nla_policy gact_policy[TCA_GACT_MAX + 1] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) [TCA_GACT_PARMS] = { .len = sizeof(struct tc_gact) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) [TCA_GACT_PROB] = { .len = sizeof(struct tc_gact_p) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) static int tcf_gact_init(struct net *net, struct nlattr *nla,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) struct nlattr *est, struct tc_action **a,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) int ovr, int bind, bool rtnl_held,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) struct tcf_proto *tp, u32 flags,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) struct netlink_ext_ack *extack)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) struct tc_action_net *tn = net_generic(net, gact_net_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) struct nlattr *tb[TCA_GACT_MAX + 1];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) struct tcf_chain *goto_ch = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) struct tc_gact *parm;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) struct tcf_gact *gact;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) int ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) u32 index;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) #ifdef CONFIG_GACT_PROB
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) struct tc_gact_p *p_parm = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) if (nla == NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) err = nla_parse_nested_deprecated(tb, TCA_GACT_MAX, nla, gact_policy,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) if (err < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) if (tb[TCA_GACT_PARMS] == NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) parm = nla_data(tb[TCA_GACT_PARMS]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) index = parm->index;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) #ifndef CONFIG_GACT_PROB
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) if (tb[TCA_GACT_PROB] != NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) return -EOPNOTSUPP;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) if (tb[TCA_GACT_PROB]) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) p_parm = nla_data(tb[TCA_GACT_PROB]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) if (p_parm->ptype >= MAX_RAND)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) if (TC_ACT_EXT_CMP(p_parm->paction, TC_ACT_GOTO_CHAIN)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) NL_SET_ERR_MSG(extack,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) "goto chain not allowed on fallback");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) err = tcf_idr_check_alloc(tn, &index, a, bind);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) if (!err) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) ret = tcf_idr_create_from_flags(tn, index, est, a,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) &act_gact_ops, bind, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) tcf_idr_cleanup(tn, index);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) ret = ACT_P_CREATED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) } else if (err > 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) if (bind)/* dont override defaults */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) if (!ovr) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) tcf_idr_release(*a, bind);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) return -EEXIST;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) err = tcf_action_check_ctrlact(parm->action, tp, &goto_ch, extack);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) if (err < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) goto release_idr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) gact = to_gact(*a);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) spin_lock_bh(&gact->tcf_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) goto_ch = tcf_action_set_ctrlact(*a, parm->action, goto_ch);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) #ifdef CONFIG_GACT_PROB
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) if (p_parm) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) gact->tcfg_paction = p_parm->paction;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) gact->tcfg_pval = max_t(u16, 1, p_parm->pval);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) /* Make sure tcfg_pval is written before tcfg_ptype
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) * coupled with smp_rmb() in gact_net_rand() & gact_determ()
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) smp_wmb();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) gact->tcfg_ptype = p_parm->ptype;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) spin_unlock_bh(&gact->tcf_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) if (goto_ch)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) tcf_chain_put_by_act(goto_ch);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) release_idr:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) tcf_idr_release(*a, bind);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) static int tcf_gact_act(struct sk_buff *skb, const struct tc_action *a,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) struct tcf_result *res)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) struct tcf_gact *gact = to_gact(a);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) int action = READ_ONCE(gact->tcf_action);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) #ifdef CONFIG_GACT_PROB
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) u32 ptype = READ_ONCE(gact->tcfg_ptype);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) if (ptype)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) action = gact_rand[ptype](gact);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) tcf_action_update_bstats(&gact->common, skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) if (action == TC_ACT_SHOT)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) tcf_action_inc_drop_qstats(&gact->common);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) tcf_lastuse_update(&gact->tcf_tm);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) return action;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) static void tcf_gact_stats_update(struct tc_action *a, u64 bytes, u64 packets,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) u64 drops, u64 lastuse, bool hw)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) struct tcf_gact *gact = to_gact(a);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) int action = READ_ONCE(gact->tcf_action);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) struct tcf_t *tm = &gact->tcf_tm;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) tcf_action_update_stats(a, bytes, packets,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) action == TC_ACT_SHOT ? packets : drops, hw);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) tm->lastuse = max_t(u64, tm->lastuse, lastuse);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) static int tcf_gact_dump(struct sk_buff *skb, struct tc_action *a,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) int bind, int ref)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) unsigned char *b = skb_tail_pointer(skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) struct tcf_gact *gact = to_gact(a);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) struct tc_gact opt = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) .index = gact->tcf_index,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) .refcnt = refcount_read(&gact->tcf_refcnt) - ref,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) .bindcnt = atomic_read(&gact->tcf_bindcnt) - bind,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) struct tcf_t t;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) spin_lock_bh(&gact->tcf_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) opt.action = gact->tcf_action;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) if (nla_put(skb, TCA_GACT_PARMS, sizeof(opt), &opt))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) goto nla_put_failure;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) #ifdef CONFIG_GACT_PROB
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) if (gact->tcfg_ptype) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) struct tc_gact_p p_opt = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) .paction = gact->tcfg_paction,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) .pval = gact->tcfg_pval,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) .ptype = gact->tcfg_ptype,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) if (nla_put(skb, TCA_GACT_PROB, sizeof(p_opt), &p_opt))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) goto nla_put_failure;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) tcf_tm_dump(&t, &gact->tcf_tm);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) if (nla_put_64bit(skb, TCA_GACT_TM, sizeof(t), &t, TCA_GACT_PAD))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) goto nla_put_failure;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) spin_unlock_bh(&gact->tcf_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) return skb->len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) nla_put_failure:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) spin_unlock_bh(&gact->tcf_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) nlmsg_trim(skb, b);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) static int tcf_gact_walker(struct net *net, struct sk_buff *skb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) struct netlink_callback *cb, int type,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) const struct tc_action_ops *ops,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) struct netlink_ext_ack *extack)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) struct tc_action_net *tn = net_generic(net, gact_net_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) return tcf_generic_walker(tn, skb, cb, type, ops, extack);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) static int tcf_gact_search(struct net *net, struct tc_action **a, u32 index)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) struct tc_action_net *tn = net_generic(net, gact_net_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) return tcf_idr_search(tn, a, index);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) static size_t tcf_gact_get_fill_size(const struct tc_action *act)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) size_t sz = nla_total_size(sizeof(struct tc_gact)); /* TCA_GACT_PARMS */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) #ifdef CONFIG_GACT_PROB
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) if (to_gact(act)->tcfg_ptype)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) /* TCA_GACT_PROB */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) sz += nla_total_size(sizeof(struct tc_gact_p));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) return sz;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) static struct tc_action_ops act_gact_ops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) .kind = "gact",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) .id = TCA_ID_GACT,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) .owner = THIS_MODULE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) .act = tcf_gact_act,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) .stats_update = tcf_gact_stats_update,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) .dump = tcf_gact_dump,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) .init = tcf_gact_init,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) .walk = tcf_gact_walker,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) .lookup = tcf_gact_search,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) .get_fill_size = tcf_gact_get_fill_size,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) .size = sizeof(struct tcf_gact),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) static __net_init int gact_init_net(struct net *net)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) struct tc_action_net *tn = net_generic(net, gact_net_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) return tc_action_net_init(net, tn, &act_gact_ops);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) static void __net_exit gact_exit_net(struct list_head *net_list)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) tc_action_net_exit(net_list, gact_net_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) static struct pernet_operations gact_net_ops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) .init = gact_init_net,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) .exit_batch = gact_exit_net,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) .id = &gact_net_id,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) .size = sizeof(struct tc_action_net),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) MODULE_AUTHOR("Jamal Hadi Salim(2002-4)");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) MODULE_DESCRIPTION("Generic Classifier actions");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) MODULE_LICENSE("GPL");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) static int __init gact_init_module(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) #ifdef CONFIG_GACT_PROB
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) pr_info("GACT probability on\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) pr_info("GACT probability NOT on\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) return tcf_register_action(&act_gact_ops, &gact_net_ops);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) static void __exit gact_cleanup_module(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) tcf_unregister_action(&act_gact_ops, &gact_net_ops);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) module_init(gact_init_module);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) module_exit(gact_cleanup_module);
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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