^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/em_meta.c Metadata ematch
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * Authors: Thomas Graf <tgraf@suug.ch>
^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) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) * The metadata ematch compares two meta objects where each object
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) * represents either a meta value stored in the kernel or a static
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) * value provided by userspace. The objects are not provided by
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) * userspace itself but rather a definition providing the information
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) * to build them. Every object is of a certain type which must be
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) * equal to the object it is being compared to.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) * The definition of a objects conists of the type (meta type), a
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) * identifier (meta id) and additional type specific information.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) * The meta id is either TCF_META_TYPE_VALUE for values provided by
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) * userspace or a index to the meta operations table consisting of
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) * function pointers to type specific meta data collectors returning
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) * the value of the requested meta value.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) * lvalue rvalue
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) * +-----------+ +-----------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) * | type: INT | | type: INT |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) * def | id: DEV | | id: VALUE |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) * | data: | | data: 3 |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) * +-----------+ +-----------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) * | |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) * ---> meta_ops[INT][DEV](...) |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) * | |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) * ----------- |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) * V V
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) * +-----------+ +-----------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) * | type: INT | | type: INT |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) * obj | id: DEV | | id: VALUE |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) * | data: 2 |<--data got filled out | data: 3 |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) * +-----------+ +-----------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) * | |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) * --------------> 2 equals 3 <--------------
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) * This is a simplified schema, the complexity varies depending
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) * on the meta type. Obviously, the length of the data must also
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) * be provided for non-numeric types.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) * Additionally, type dependent modifiers such as shift operators
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) * or mask may be applied to extend the functionaliy. As of now,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) * the variable length type supports shifting the byte string to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) * the right, eating up any number of octets and thus supporting
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) * wildcard interface name comparisons such as "ppp%" matching
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) * ppp0..9.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) * NOTE: Certain meta values depend on other subsystems and are
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) * only available if that subsystem is enabled in the kernel.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) #include <linux/types.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) #include <linux/sched.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) #include <linux/sched/loadavg.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) #include <linux/string.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) #include <linux/skbuff.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) #include <linux/random.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) #include <linux/if_vlan.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) #include <linux/tc_ematch/tc_em_meta.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) #include <net/dst.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) #include <net/route.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) #include <net/pkt_cls.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) #include <net/sock.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) struct meta_obj {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) unsigned long value;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) unsigned int len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) struct meta_value {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) struct tcf_meta_val hdr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) unsigned long val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) unsigned int len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) struct meta_match {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) struct meta_value lvalue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) struct meta_value rvalue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) static inline int meta_id(struct meta_value *v)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) return TCF_META_ID(v->hdr.kind);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) static inline int meta_type(struct meta_value *v)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) return TCF_META_TYPE(v->hdr.kind);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) #define META_COLLECTOR(FUNC) static void meta_##FUNC(struct sk_buff *skb, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) struct tcf_pkt_info *info, struct meta_value *v, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) struct meta_obj *dst, int *err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) /**************************************************************************
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) * System status & misc
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) **************************************************************************/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) META_COLLECTOR(int_random)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) get_random_bytes(&dst->value, sizeof(dst->value));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) static inline unsigned long fixed_loadavg(int load)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) int rnd_load = load + (FIXED_1/200);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) int rnd_frac = ((rnd_load & (FIXED_1-1)) * 100) >> FSHIFT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) return ((rnd_load >> FSHIFT) * 100) + rnd_frac;
^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) META_COLLECTOR(int_loadavg_0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) dst->value = fixed_loadavg(avenrun[0]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) META_COLLECTOR(int_loadavg_1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) dst->value = fixed_loadavg(avenrun[1]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) META_COLLECTOR(int_loadavg_2)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) dst->value = fixed_loadavg(avenrun[2]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) /**************************************************************************
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) * Device names & indices
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) **************************************************************************/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) static inline int int_dev(struct net_device *dev, struct meta_obj *dst)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) if (unlikely(dev == NULL))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) dst->value = dev->ifindex;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) static inline int var_dev(struct net_device *dev, struct meta_obj *dst)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) if (unlikely(dev == NULL))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) dst->value = (unsigned long) dev->name;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) dst->len = strlen(dev->name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) META_COLLECTOR(int_dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) *err = int_dev(skb->dev, dst);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) META_COLLECTOR(var_dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) *err = var_dev(skb->dev, dst);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) /**************************************************************************
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) * vlan tag
^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) META_COLLECTOR(int_vlan_tag)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) unsigned short tag;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) if (skb_vlan_tag_present(skb))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) dst->value = skb_vlan_tag_get(skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) else if (!__vlan_get_tag(skb, &tag))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) dst->value = tag;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) *err = -1;
^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)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) /**************************************************************************
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) * skb attributes
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) **************************************************************************/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) META_COLLECTOR(int_priority)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) dst->value = skb->priority;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) META_COLLECTOR(int_protocol)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) /* Let userspace take care of the byte ordering */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) dst->value = skb_protocol(skb, false);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) META_COLLECTOR(int_pkttype)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) dst->value = skb->pkt_type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) META_COLLECTOR(int_pktlen)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) dst->value = skb->len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) META_COLLECTOR(int_datalen)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) dst->value = skb->data_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) META_COLLECTOR(int_maclen)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) dst->value = skb->mac_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) META_COLLECTOR(int_rxhash)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) dst->value = skb_get_hash(skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) /**************************************************************************
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) * Netfilter
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) **************************************************************************/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) META_COLLECTOR(int_mark)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) dst->value = skb->mark;
^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) /**************************************************************************
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) * Traffic Control
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) **************************************************************************/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) META_COLLECTOR(int_tcindex)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) dst->value = skb->tc_index;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) /**************************************************************************
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) * Routing
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) **************************************************************************/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) META_COLLECTOR(int_rtclassid)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) if (unlikely(skb_dst(skb) == NULL))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) *err = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) #ifdef CONFIG_IP_ROUTE_CLASSID
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) dst->value = skb_dst(skb)->tclassid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) dst->value = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) META_COLLECTOR(int_rtiif)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) if (unlikely(skb_rtable(skb) == NULL))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) *err = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) dst->value = inet_iif(skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) }
^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) * Socket Attributes
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) **************************************************************************/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) #define skip_nonlocal(skb) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) (unlikely(skb->sk == NULL))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) META_COLLECTOR(int_sk_family)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) if (skip_nonlocal(skb)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) *err = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) dst->value = skb->sk->sk_family;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) META_COLLECTOR(int_sk_state)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) if (skip_nonlocal(skb)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) *err = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) dst->value = skb->sk->sk_state;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) META_COLLECTOR(int_sk_reuse)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) if (skip_nonlocal(skb)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) *err = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) dst->value = skb->sk->sk_reuse;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) META_COLLECTOR(int_sk_bound_if)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) if (skip_nonlocal(skb)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) *err = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) /* No error if bound_dev_if is 0, legal userspace check */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) dst->value = skb->sk->sk_bound_dev_if;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) META_COLLECTOR(var_sk_bound_if)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) if (skip_nonlocal(skb)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) *err = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) if (skb->sk->sk_bound_dev_if == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) dst->value = (unsigned long) "any";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) dst->len = 3;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) struct net_device *dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) rcu_read_lock();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) dev = dev_get_by_index_rcu(sock_net(skb->sk),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) skb->sk->sk_bound_dev_if);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) *err = var_dev(dev, dst);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) rcu_read_unlock();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) META_COLLECTOR(int_sk_refcnt)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) if (skip_nonlocal(skb)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) *err = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) dst->value = refcount_read(&skb->sk->sk_refcnt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) META_COLLECTOR(int_sk_rcvbuf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) const struct sock *sk = skb_to_full_sk(skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) if (!sk) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) *err = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) dst->value = sk->sk_rcvbuf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) META_COLLECTOR(int_sk_shutdown)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) const struct sock *sk = skb_to_full_sk(skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) if (!sk) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) *err = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) dst->value = sk->sk_shutdown;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) META_COLLECTOR(int_sk_proto)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) const struct sock *sk = skb_to_full_sk(skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) if (!sk) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) *err = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) dst->value = sk->sk_protocol;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) META_COLLECTOR(int_sk_type)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) const struct sock *sk = skb_to_full_sk(skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) if (!sk) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380) *err = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) dst->value = sk->sk_type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386) META_COLLECTOR(int_sk_rmem_alloc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) const struct sock *sk = skb_to_full_sk(skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) if (!sk) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) *err = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) dst->value = sk_rmem_alloc_get(sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397) META_COLLECTOR(int_sk_wmem_alloc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) const struct sock *sk = skb_to_full_sk(skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401) if (!sk) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402) *err = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405) dst->value = sk_wmem_alloc_get(sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408) META_COLLECTOR(int_sk_omem_alloc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410) const struct sock *sk = skb_to_full_sk(skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412) if (!sk) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413) *err = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416) dst->value = atomic_read(&sk->sk_omem_alloc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419) META_COLLECTOR(int_sk_rcv_qlen)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421) const struct sock *sk = skb_to_full_sk(skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423) if (!sk) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424) *err = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427) dst->value = sk->sk_receive_queue.qlen;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430) META_COLLECTOR(int_sk_snd_qlen)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432) const struct sock *sk = skb_to_full_sk(skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434) if (!sk) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435) *err = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438) dst->value = sk->sk_write_queue.qlen;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441) META_COLLECTOR(int_sk_wmem_queued)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443) const struct sock *sk = skb_to_full_sk(skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445) if (!sk) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 446) *err = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 447) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 448) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 449) dst->value = READ_ONCE(sk->sk_wmem_queued);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 450) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 451)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 452) META_COLLECTOR(int_sk_fwd_alloc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 453) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 454) const struct sock *sk = skb_to_full_sk(skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 455)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 456) if (!sk) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 457) *err = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 458) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 459) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 460) dst->value = sk->sk_forward_alloc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 461) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 462)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 463) META_COLLECTOR(int_sk_sndbuf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 464) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 465) const struct sock *sk = skb_to_full_sk(skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 466)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 467) if (!sk) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 468) *err = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 469) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 470) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 471) dst->value = sk->sk_sndbuf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 472) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 473)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 474) META_COLLECTOR(int_sk_alloc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 475) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 476) const struct sock *sk = skb_to_full_sk(skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 477)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 478) if (!sk) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 479) *err = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 480) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 481) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 482) dst->value = (__force int) sk->sk_allocation;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 483) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 484)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 485) META_COLLECTOR(int_sk_hash)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 486) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 487) if (skip_nonlocal(skb)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 488) *err = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 489) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 490) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 491) dst->value = skb->sk->sk_hash;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 492) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 493)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 494) META_COLLECTOR(int_sk_lingertime)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 495) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 496) const struct sock *sk = skb_to_full_sk(skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 497)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 498) if (!sk) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 499) *err = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 500) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 501) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 502) dst->value = sk->sk_lingertime / HZ;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 503) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 504)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 505) META_COLLECTOR(int_sk_err_qlen)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 506) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 507) const struct sock *sk = skb_to_full_sk(skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 508)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 509) if (!sk) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 510) *err = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 511) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 512) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 513) dst->value = sk->sk_error_queue.qlen;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 514) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 515)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 516) META_COLLECTOR(int_sk_ack_bl)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 517) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 518) const struct sock *sk = skb_to_full_sk(skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 519)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 520) if (!sk) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 521) *err = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 522) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 523) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 524) dst->value = READ_ONCE(sk->sk_ack_backlog);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 525) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 526)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 527) META_COLLECTOR(int_sk_max_ack_bl)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 528) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 529) const struct sock *sk = skb_to_full_sk(skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 530)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 531) if (!sk) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 532) *err = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 533) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 534) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 535) dst->value = READ_ONCE(sk->sk_max_ack_backlog);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 536) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 537)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 538) META_COLLECTOR(int_sk_prio)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 539) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 540) const struct sock *sk = skb_to_full_sk(skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 541)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 542) if (!sk) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 543) *err = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 544) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 545) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 546) dst->value = sk->sk_priority;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 547) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 548)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 549) META_COLLECTOR(int_sk_rcvlowat)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 550) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 551) const struct sock *sk = skb_to_full_sk(skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 552)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 553) if (!sk) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 554) *err = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 555) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 556) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 557) dst->value = READ_ONCE(sk->sk_rcvlowat);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 558) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 559)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 560) META_COLLECTOR(int_sk_rcvtimeo)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 561) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 562) const struct sock *sk = skb_to_full_sk(skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 563)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 564) if (!sk) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 565) *err = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 566) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 567) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 568) dst->value = sk->sk_rcvtimeo / HZ;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 569) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 570)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 571) META_COLLECTOR(int_sk_sndtimeo)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 572) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 573) const struct sock *sk = skb_to_full_sk(skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 574)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 575) if (!sk) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 576) *err = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 577) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 578) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 579) dst->value = sk->sk_sndtimeo / HZ;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 580) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 581)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 582) META_COLLECTOR(int_sk_sendmsg_off)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 583) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 584) const struct sock *sk = skb_to_full_sk(skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 585)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 586) if (!sk) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 587) *err = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 588) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 589) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 590) dst->value = sk->sk_frag.offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 591) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 592)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 593) META_COLLECTOR(int_sk_write_pend)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 594) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 595) const struct sock *sk = skb_to_full_sk(skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 596)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 597) if (!sk) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 598) *err = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 599) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 600) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 601) dst->value = sk->sk_write_pending;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 602) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 603)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 604) /**************************************************************************
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 605) * Meta value collectors assignment table
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 606) **************************************************************************/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 607)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 608) struct meta_ops {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 609) void (*get)(struct sk_buff *, struct tcf_pkt_info *,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 610) struct meta_value *, struct meta_obj *, int *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 611) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 612)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 613) #define META_ID(name) TCF_META_ID_##name
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 614) #define META_FUNC(name) { .get = meta_##name }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 615)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 616) /* Meta value operations table listing all meta value collectors and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 617) * assigns them to a type and meta id. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 618) static struct meta_ops __meta_ops[TCF_META_TYPE_MAX + 1][TCF_META_ID_MAX + 1] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 619) [TCF_META_TYPE_VAR] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 620) [META_ID(DEV)] = META_FUNC(var_dev),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 621) [META_ID(SK_BOUND_IF)] = META_FUNC(var_sk_bound_if),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 622) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 623) [TCF_META_TYPE_INT] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 624) [META_ID(RANDOM)] = META_FUNC(int_random),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 625) [META_ID(LOADAVG_0)] = META_FUNC(int_loadavg_0),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 626) [META_ID(LOADAVG_1)] = META_FUNC(int_loadavg_1),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 627) [META_ID(LOADAVG_2)] = META_FUNC(int_loadavg_2),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 628) [META_ID(DEV)] = META_FUNC(int_dev),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 629) [META_ID(PRIORITY)] = META_FUNC(int_priority),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 630) [META_ID(PROTOCOL)] = META_FUNC(int_protocol),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 631) [META_ID(PKTTYPE)] = META_FUNC(int_pkttype),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 632) [META_ID(PKTLEN)] = META_FUNC(int_pktlen),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 633) [META_ID(DATALEN)] = META_FUNC(int_datalen),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 634) [META_ID(MACLEN)] = META_FUNC(int_maclen),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 635) [META_ID(NFMARK)] = META_FUNC(int_mark),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 636) [META_ID(TCINDEX)] = META_FUNC(int_tcindex),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 637) [META_ID(RTCLASSID)] = META_FUNC(int_rtclassid),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 638) [META_ID(RTIIF)] = META_FUNC(int_rtiif),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 639) [META_ID(SK_FAMILY)] = META_FUNC(int_sk_family),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 640) [META_ID(SK_STATE)] = META_FUNC(int_sk_state),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 641) [META_ID(SK_REUSE)] = META_FUNC(int_sk_reuse),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 642) [META_ID(SK_BOUND_IF)] = META_FUNC(int_sk_bound_if),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 643) [META_ID(SK_REFCNT)] = META_FUNC(int_sk_refcnt),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 644) [META_ID(SK_RCVBUF)] = META_FUNC(int_sk_rcvbuf),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 645) [META_ID(SK_SNDBUF)] = META_FUNC(int_sk_sndbuf),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 646) [META_ID(SK_SHUTDOWN)] = META_FUNC(int_sk_shutdown),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 647) [META_ID(SK_PROTO)] = META_FUNC(int_sk_proto),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 648) [META_ID(SK_TYPE)] = META_FUNC(int_sk_type),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 649) [META_ID(SK_RMEM_ALLOC)] = META_FUNC(int_sk_rmem_alloc),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 650) [META_ID(SK_WMEM_ALLOC)] = META_FUNC(int_sk_wmem_alloc),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 651) [META_ID(SK_OMEM_ALLOC)] = META_FUNC(int_sk_omem_alloc),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 652) [META_ID(SK_WMEM_QUEUED)] = META_FUNC(int_sk_wmem_queued),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 653) [META_ID(SK_RCV_QLEN)] = META_FUNC(int_sk_rcv_qlen),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 654) [META_ID(SK_SND_QLEN)] = META_FUNC(int_sk_snd_qlen),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 655) [META_ID(SK_ERR_QLEN)] = META_FUNC(int_sk_err_qlen),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 656) [META_ID(SK_FORWARD_ALLOCS)] = META_FUNC(int_sk_fwd_alloc),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 657) [META_ID(SK_ALLOCS)] = META_FUNC(int_sk_alloc),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 658) [META_ID(SK_HASH)] = META_FUNC(int_sk_hash),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 659) [META_ID(SK_LINGERTIME)] = META_FUNC(int_sk_lingertime),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 660) [META_ID(SK_ACK_BACKLOG)] = META_FUNC(int_sk_ack_bl),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 661) [META_ID(SK_MAX_ACK_BACKLOG)] = META_FUNC(int_sk_max_ack_bl),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 662) [META_ID(SK_PRIO)] = META_FUNC(int_sk_prio),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 663) [META_ID(SK_RCVLOWAT)] = META_FUNC(int_sk_rcvlowat),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 664) [META_ID(SK_RCVTIMEO)] = META_FUNC(int_sk_rcvtimeo),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 665) [META_ID(SK_SNDTIMEO)] = META_FUNC(int_sk_sndtimeo),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 666) [META_ID(SK_SENDMSG_OFF)] = META_FUNC(int_sk_sendmsg_off),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 667) [META_ID(SK_WRITE_PENDING)] = META_FUNC(int_sk_write_pend),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 668) [META_ID(VLAN_TAG)] = META_FUNC(int_vlan_tag),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 669) [META_ID(RXHASH)] = META_FUNC(int_rxhash),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 670) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 671) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 672)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 673) static inline struct meta_ops *meta_ops(struct meta_value *val)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 674) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 675) return &__meta_ops[meta_type(val)][meta_id(val)];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 676) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 677)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 678) /**************************************************************************
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 679) * Type specific operations for TCF_META_TYPE_VAR
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 680) **************************************************************************/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 681)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 682) static int meta_var_compare(struct meta_obj *a, struct meta_obj *b)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 683) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 684) int r = a->len - b->len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 685)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 686) if (r == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 687) r = memcmp((void *) a->value, (void *) b->value, a->len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 688)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 689) return r;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 690) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 691)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 692) static int meta_var_change(struct meta_value *dst, struct nlattr *nla)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 693) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 694) int len = nla_len(nla);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 695)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 696) dst->val = (unsigned long)kmemdup(nla_data(nla), len, GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 697) if (dst->val == 0UL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 698) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 699) dst->len = len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 700) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 701) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 702)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 703) static void meta_var_destroy(struct meta_value *v)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 704) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 705) kfree((void *) v->val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 706) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 707)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 708) static void meta_var_apply_extras(struct meta_value *v,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 709) struct meta_obj *dst)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 710) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 711) int shift = v->hdr.shift;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 712)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 713) if (shift && shift < dst->len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 714) dst->len -= shift;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 715) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 716)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 717) static int meta_var_dump(struct sk_buff *skb, struct meta_value *v, int tlv)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 718) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 719) if (v->val && v->len &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 720) nla_put(skb, tlv, v->len, (void *) v->val))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 721) goto nla_put_failure;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 722) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 723)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 724) nla_put_failure:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 725) return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 726) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 727)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 728) /**************************************************************************
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 729) * Type specific operations for TCF_META_TYPE_INT
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 730) **************************************************************************/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 731)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 732) static int meta_int_compare(struct meta_obj *a, struct meta_obj *b)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 733) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 734) /* Let gcc optimize it, the unlikely is not really based on
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 735) * some numbers but jump free code for mismatches seems
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 736) * more logical. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 737) if (unlikely(a->value == b->value))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 738) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 739) else if (a->value < b->value)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 740) return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 741) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 742) return 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 743) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 744)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 745) static int meta_int_change(struct meta_value *dst, struct nlattr *nla)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 746) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 747) if (nla_len(nla) >= sizeof(unsigned long)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 748) dst->val = *(unsigned long *) nla_data(nla);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 749) dst->len = sizeof(unsigned long);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 750) } else if (nla_len(nla) == sizeof(u32)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 751) dst->val = nla_get_u32(nla);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 752) dst->len = sizeof(u32);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 753) } else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 754) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 755)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 756) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 757) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 758)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 759) static void meta_int_apply_extras(struct meta_value *v,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 760) struct meta_obj *dst)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 761) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 762) if (v->hdr.shift)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 763) dst->value >>= v->hdr.shift;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 764)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 765) if (v->val)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 766) dst->value &= v->val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 767) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 768)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 769) static int meta_int_dump(struct sk_buff *skb, struct meta_value *v, int tlv)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 770) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 771) if (v->len == sizeof(unsigned long)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 772) if (nla_put(skb, tlv, sizeof(unsigned long), &v->val))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 773) goto nla_put_failure;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 774) } else if (v->len == sizeof(u32)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 775) if (nla_put_u32(skb, tlv, v->val))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 776) goto nla_put_failure;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 777) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 778)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 779) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 780)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 781) nla_put_failure:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 782) return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 783) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 784)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 785) /**************************************************************************
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 786) * Type specific operations table
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 787) **************************************************************************/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 788)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 789) struct meta_type_ops {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 790) void (*destroy)(struct meta_value *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 791) int (*compare)(struct meta_obj *, struct meta_obj *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 792) int (*change)(struct meta_value *, struct nlattr *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 793) void (*apply_extras)(struct meta_value *, struct meta_obj *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 794) int (*dump)(struct sk_buff *, struct meta_value *, int);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 795) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 796)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 797) static const struct meta_type_ops __meta_type_ops[TCF_META_TYPE_MAX + 1] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 798) [TCF_META_TYPE_VAR] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 799) .destroy = meta_var_destroy,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 800) .compare = meta_var_compare,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 801) .change = meta_var_change,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 802) .apply_extras = meta_var_apply_extras,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 803) .dump = meta_var_dump
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 804) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 805) [TCF_META_TYPE_INT] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 806) .compare = meta_int_compare,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 807) .change = meta_int_change,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 808) .apply_extras = meta_int_apply_extras,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 809) .dump = meta_int_dump
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 810) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 811) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 812)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 813) static inline const struct meta_type_ops *meta_type_ops(struct meta_value *v)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 814) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 815) return &__meta_type_ops[meta_type(v)];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 816) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 817)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 818) /**************************************************************************
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 819) * Core
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 820) **************************************************************************/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 821)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 822) static int meta_get(struct sk_buff *skb, struct tcf_pkt_info *info,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 823) struct meta_value *v, struct meta_obj *dst)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 824) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 825) int err = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 826)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 827) if (meta_id(v) == TCF_META_ID_VALUE) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 828) dst->value = v->val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 829) dst->len = v->len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 830) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 831) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 832)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 833) meta_ops(v)->get(skb, info, v, dst, &err);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 834) if (err < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 835) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 836)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 837) if (meta_type_ops(v)->apply_extras)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 838) meta_type_ops(v)->apply_extras(v, dst);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 839)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 840) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 841) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 842)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 843) static int em_meta_match(struct sk_buff *skb, struct tcf_ematch *m,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 844) struct tcf_pkt_info *info)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 845) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 846) int r;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 847) struct meta_match *meta = (struct meta_match *) m->data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 848) struct meta_obj l_value, r_value;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 849)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 850) if (meta_get(skb, info, &meta->lvalue, &l_value) < 0 ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 851) meta_get(skb, info, &meta->rvalue, &r_value) < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 852) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 853)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 854) r = meta_type_ops(&meta->lvalue)->compare(&l_value, &r_value);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 855)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 856) switch (meta->lvalue.hdr.op) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 857) case TCF_EM_OPND_EQ:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 858) return !r;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 859) case TCF_EM_OPND_LT:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 860) return r < 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 861) case TCF_EM_OPND_GT:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 862) return r > 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 863) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 864)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 865) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 866) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 867)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 868) static void meta_delete(struct meta_match *meta)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 869) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 870) if (meta) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 871) const struct meta_type_ops *ops = meta_type_ops(&meta->lvalue);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 872)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 873) if (ops && ops->destroy) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 874) ops->destroy(&meta->lvalue);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 875) ops->destroy(&meta->rvalue);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 876) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 877) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 878)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 879) kfree(meta);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 880) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 881)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 882) static inline int meta_change_data(struct meta_value *dst, struct nlattr *nla)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 883) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 884) if (nla) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 885) if (nla_len(nla) == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 886) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 887)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 888) return meta_type_ops(dst)->change(dst, nla);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 889) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 890)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 891) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 892) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 893)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 894) static inline int meta_is_supported(struct meta_value *val)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 895) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 896) return !meta_id(val) || meta_ops(val)->get;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 897) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 898)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 899) static const struct nla_policy meta_policy[TCA_EM_META_MAX + 1] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 900) [TCA_EM_META_HDR] = { .len = sizeof(struct tcf_meta_hdr) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 901) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 902)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 903) static int em_meta_change(struct net *net, void *data, int len,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 904) struct tcf_ematch *m)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 905) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 906) int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 907) struct nlattr *tb[TCA_EM_META_MAX + 1];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 908) struct tcf_meta_hdr *hdr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 909) struct meta_match *meta = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 910)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 911) err = nla_parse_deprecated(tb, TCA_EM_META_MAX, data, len,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 912) meta_policy, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 913) if (err < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 914) goto errout;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 915)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 916) err = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 917) if (tb[TCA_EM_META_HDR] == NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 918) goto errout;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 919) hdr = nla_data(tb[TCA_EM_META_HDR]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 920)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 921) if (TCF_META_TYPE(hdr->left.kind) != TCF_META_TYPE(hdr->right.kind) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 922) TCF_META_TYPE(hdr->left.kind) > TCF_META_TYPE_MAX ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 923) TCF_META_ID(hdr->left.kind) > TCF_META_ID_MAX ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 924) TCF_META_ID(hdr->right.kind) > TCF_META_ID_MAX)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 925) goto errout;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 926)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 927) meta = kzalloc(sizeof(*meta), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 928) if (meta == NULL) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 929) err = -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 930) goto errout;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 931) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 932)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 933) memcpy(&meta->lvalue.hdr, &hdr->left, sizeof(hdr->left));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 934) memcpy(&meta->rvalue.hdr, &hdr->right, sizeof(hdr->right));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 935)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 936) if (!meta_is_supported(&meta->lvalue) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 937) !meta_is_supported(&meta->rvalue)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 938) err = -EOPNOTSUPP;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 939) goto errout;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 940) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 941)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 942) if (meta_change_data(&meta->lvalue, tb[TCA_EM_META_LVALUE]) < 0 ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 943) meta_change_data(&meta->rvalue, tb[TCA_EM_META_RVALUE]) < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 944) goto errout;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 945)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 946) m->datalen = sizeof(*meta);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 947) m->data = (unsigned long) meta;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 948)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 949) err = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 950) errout:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 951) if (err && meta)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 952) meta_delete(meta);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 953) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 954) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 955)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 956) static void em_meta_destroy(struct tcf_ematch *m)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 957) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 958) if (m)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 959) meta_delete((struct meta_match *) m->data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 960) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 961)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 962) static int em_meta_dump(struct sk_buff *skb, struct tcf_ematch *em)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 963) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 964) struct meta_match *meta = (struct meta_match *) em->data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 965) struct tcf_meta_hdr hdr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 966) const struct meta_type_ops *ops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 967)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 968) memset(&hdr, 0, sizeof(hdr));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 969) memcpy(&hdr.left, &meta->lvalue.hdr, sizeof(hdr.left));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 970) memcpy(&hdr.right, &meta->rvalue.hdr, sizeof(hdr.right));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 971)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 972) if (nla_put(skb, TCA_EM_META_HDR, sizeof(hdr), &hdr))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 973) goto nla_put_failure;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 974)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 975) ops = meta_type_ops(&meta->lvalue);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 976) if (ops->dump(skb, &meta->lvalue, TCA_EM_META_LVALUE) < 0 ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 977) ops->dump(skb, &meta->rvalue, TCA_EM_META_RVALUE) < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 978) goto nla_put_failure;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 979)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 980) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 981)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 982) nla_put_failure:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 983) return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 984) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 985)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 986) static struct tcf_ematch_ops em_meta_ops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 987) .kind = TCF_EM_META,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 988) .change = em_meta_change,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 989) .match = em_meta_match,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 990) .destroy = em_meta_destroy,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 991) .dump = em_meta_dump,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 992) .owner = THIS_MODULE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 993) .link = LIST_HEAD_INIT(em_meta_ops.link)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 994) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 995)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 996) static int __init init_em_meta(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 997) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 998) return tcf_em_register(&em_meta_ops);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 999) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1000)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1001) static void __exit exit_em_meta(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1002) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1003) tcf_em_unregister(&em_meta_ops);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1004) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1005)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1006) MODULE_LICENSE("GPL");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1007)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1008) module_init(init_em_meta);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1009) module_exit(exit_em_meta);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1010)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1011) MODULE_ALIAS_TCF_EMATCH(TCF_EM_META);
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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