* [PATCH v5.10.y] net/sched: Retire rsvp classifier
@ 2023-09-20 2:22 Kyle Zeng
0 siblings, 0 replies; only message in thread
From: Kyle Zeng @ 2023-09-20 2:22 UTC (permalink / raw)
To: gregkh; +Cc: stable, jhs, jiri, pabeni
commit 265b4da82dbf5df04bee5a5d46b7474b1aaf326a upstream.
The rsvp classifier has served us well for about a quarter of a century but has
has not been getting much maintenance attention due to lack of known users.
Signed-off-by: Jamal Hadi Salim <jhs@mojatatu.com>
Acked-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Kyle Zeng <zengyhkyle@gmail.com>
---
Please apply this patch to v5.10.y. This patch adapts the original patch
to v5.10.y considering codebase change.
This patch retires rsvp classifier which is what the upstream patch did.
This patch has been tested against the v5.10.y stable tree.
net/sched/Kconfig | 28 --
net/sched/Makefile | 2 -
net/sched/cls_rsvp.c | 24 --
net/sched/cls_rsvp.h | 777 ------------------------------------------
net/sched/cls_rsvp6.c | 24 --
5 files changed, 855 deletions(-)
delete mode 100644 net/sched/cls_rsvp.c
delete mode 100644 net/sched/cls_rsvp.h
delete mode 100644 net/sched/cls_rsvp6.c
diff --git a/net/sched/Kconfig b/net/sched/Kconfig
index 697522371914..2046c16b29f0 100644
--- a/net/sched/Kconfig
+++ b/net/sched/Kconfig
@@ -548,34 +548,6 @@ config CLS_U32_MARK
help
Say Y here to be able to use netfilter marks as u32 key.
-config NET_CLS_RSVP
- tristate "IPv4 Resource Reservation Protocol (RSVP)"
- select NET_CLS
- help
- The Resource Reservation Protocol (RSVP) permits end systems to
- request a minimum and maximum data flow rate for a connection; this
- is important for real time data such as streaming sound or video.
-
- Say Y here if you want to be able to classify outgoing packets based
- on their RSVP requests.
-
- To compile this code as a module, choose M here: the
- module will be called cls_rsvp.
-
-config NET_CLS_RSVP6
- tristate "IPv6 Resource Reservation Protocol (RSVP6)"
- select NET_CLS
- help
- The Resource Reservation Protocol (RSVP) permits end systems to
- request a minimum and maximum data flow rate for a connection; this
- is important for real time data such as streaming sound or video.
-
- Say Y here if you want to be able to classify outgoing packets based
- on their RSVP requests and you are using the IPv6 protocol.
-
- To compile this code as a module, choose M here: the
- module will be called cls_rsvp6.
-
config NET_CLS_FLOW
tristate "Flow classifier"
select NET_CLS
diff --git a/net/sched/Makefile b/net/sched/Makefile
index 4311fdb21119..df2bcd785f7d 100644
--- a/net/sched/Makefile
+++ b/net/sched/Makefile
@@ -68,8 +68,6 @@ obj-$(CONFIG_NET_SCH_TAPRIO) += sch_taprio.o
obj-$(CONFIG_NET_CLS_U32) += cls_u32.o
obj-$(CONFIG_NET_CLS_ROUTE4) += cls_route.o
obj-$(CONFIG_NET_CLS_FW) += cls_fw.o
-obj-$(CONFIG_NET_CLS_RSVP) += cls_rsvp.o
-obj-$(CONFIG_NET_CLS_RSVP6) += cls_rsvp6.o
obj-$(CONFIG_NET_CLS_BASIC) += cls_basic.o
obj-$(CONFIG_NET_CLS_FLOW) += cls_flow.o
obj-$(CONFIG_NET_CLS_CGROUP) += cls_cgroup.o
diff --git a/net/sched/cls_rsvp.c b/net/sched/cls_rsvp.c
deleted file mode 100644
index de1c1d4da597..000000000000
--- a/net/sched/cls_rsvp.c
+++ /dev/null
@@ -1,24 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-or-later
-/*
- * net/sched/cls_rsvp.c Special RSVP packet classifier for IPv4.
- *
- * Authors: Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru>
- */
-
-#include <linux/module.h>
-#include <linux/types.h>
-#include <linux/kernel.h>
-#include <linux/string.h>
-#include <linux/errno.h>
-#include <linux/skbuff.h>
-#include <net/ip.h>
-#include <net/netlink.h>
-#include <net/act_api.h>
-#include <net/pkt_cls.h>
-
-#define RSVP_DST_LEN 1
-#define RSVP_ID "rsvp"
-#define RSVP_OPS cls_rsvp_ops
-
-#include "cls_rsvp.h"
-MODULE_LICENSE("GPL");
diff --git a/net/sched/cls_rsvp.h b/net/sched/cls_rsvp.h
deleted file mode 100644
index d36949d9382c..000000000000
--- a/net/sched/cls_rsvp.h
+++ /dev/null
@@ -1,777 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0-or-later */
-/*
- * net/sched/cls_rsvp.h Template file for RSVPv[46] classifiers.
- *
- * Authors: Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru>
- */
-
-/*
- Comparing to general packet classification problem,
- RSVP needs only sevaral relatively simple rules:
-
- * (dst, protocol) are always specified,
- so that we are able to hash them.
- * src may be exact, or may be wildcard, so that
- we can keep a hash table plus one wildcard entry.
- * source port (or flow label) is important only if src is given.
-
- IMPLEMENTATION.
-
- We use a two level hash table: The top level is keyed by
- destination address and protocol ID, every bucket contains a list
- of "rsvp sessions", identified by destination address, protocol and
- DPI(="Destination Port ID"): triple (key, mask, offset).
-
- Every bucket has a smaller hash table keyed by source address
- (cf. RSVP flowspec) and one wildcard entry for wildcard reservations.
- Every bucket is again a list of "RSVP flows", selected by
- source address and SPI(="Source Port ID" here rather than
- "security parameter index"): triple (key, mask, offset).
-
-
- NOTE 1. All the packets with IPv6 extension headers (but AH and ESP)
- and all fragmented packets go to the best-effort traffic class.
-
-
- NOTE 2. Two "port id"'s seems to be redundant, rfc2207 requires
- only one "Generalized Port Identifier". So that for classic
- ah, esp (and udp,tcp) both *pi should coincide or one of them
- should be wildcard.
-
- At first sight, this redundancy is just a waste of CPU
- resources. But DPI and SPI add the possibility to assign different
- priorities to GPIs. Look also at note 4 about tunnels below.
-
-
- NOTE 3. One complication is the case of tunneled packets.
- We implement it as following: if the first lookup
- matches a special session with "tunnelhdr" value not zero,
- flowid doesn't contain the true flow ID, but the tunnel ID (1...255).
- In this case, we pull tunnelhdr bytes and restart lookup
- with tunnel ID added to the list of keys. Simple and stupid 8)8)
- It's enough for PIMREG and IPIP.
-
-
- NOTE 4. Two GPIs make it possible to parse even GRE packets.
- F.e. DPI can select ETH_P_IP (and necessary flags to make
- tunnelhdr correct) in GRE protocol field and SPI matches
- GRE key. Is it not nice? 8)8)
-
-
- Well, as result, despite its simplicity, we get a pretty
- powerful classification engine. */
-
-
-struct rsvp_head {
- u32 tmap[256/32];
- u32 hgenerator;
- u8 tgenerator;
- struct rsvp_session __rcu *ht[256];
- struct rcu_head rcu;
-};
-
-struct rsvp_session {
- struct rsvp_session __rcu *next;
- __be32 dst[RSVP_DST_LEN];
- struct tc_rsvp_gpi dpi;
- u8 protocol;
- u8 tunnelid;
- /* 16 (src,sport) hash slots, and one wildcard source slot */
- struct rsvp_filter __rcu *ht[16 + 1];
- struct rcu_head rcu;
-};
-
-
-struct rsvp_filter {
- struct rsvp_filter __rcu *next;
- __be32 src[RSVP_DST_LEN];
- struct tc_rsvp_gpi spi;
- u8 tunnelhdr;
-
- struct tcf_result res;
- struct tcf_exts exts;
-
- u32 handle;
- struct rsvp_session *sess;
- struct rcu_work rwork;
-};
-
-static inline unsigned int hash_dst(__be32 *dst, u8 protocol, u8 tunnelid)
-{
- unsigned int h = (__force __u32)dst[RSVP_DST_LEN - 1];
-
- h ^= h>>16;
- h ^= h>>8;
- return (h ^ protocol ^ tunnelid) & 0xFF;
-}
-
-static inline unsigned int hash_src(__be32 *src)
-{
- unsigned int h = (__force __u32)src[RSVP_DST_LEN-1];
-
- h ^= h>>16;
- h ^= h>>8;
- h ^= h>>4;
- return h & 0xF;
-}
-
-#define RSVP_APPLY_RESULT() \
-{ \
- int r = tcf_exts_exec(skb, &f->exts, res); \
- if (r < 0) \
- continue; \
- else if (r > 0) \
- return r; \
-}
-
-static int rsvp_classify(struct sk_buff *skb, const struct tcf_proto *tp,
- struct tcf_result *res)
-{
- struct rsvp_head *head = rcu_dereference_bh(tp->root);
- struct rsvp_session *s;
- struct rsvp_filter *f;
- unsigned int h1, h2;
- __be32 *dst, *src;
- u8 protocol;
- u8 tunnelid = 0;
- u8 *xprt;
-#if RSVP_DST_LEN == 4
- struct ipv6hdr *nhptr;
-
- if (!pskb_network_may_pull(skb, sizeof(*nhptr)))
- return -1;
- nhptr = ipv6_hdr(skb);
-#else
- struct iphdr *nhptr;
-
- if (!pskb_network_may_pull(skb, sizeof(*nhptr)))
- return -1;
- nhptr = ip_hdr(skb);
-#endif
-restart:
-
-#if RSVP_DST_LEN == 4
- src = &nhptr->saddr.s6_addr32[0];
- dst = &nhptr->daddr.s6_addr32[0];
- protocol = nhptr->nexthdr;
- xprt = ((u8 *)nhptr) + sizeof(struct ipv6hdr);
-#else
- src = &nhptr->saddr;
- dst = &nhptr->daddr;
- protocol = nhptr->protocol;
- xprt = ((u8 *)nhptr) + (nhptr->ihl<<2);
- if (ip_is_fragment(nhptr))
- return -1;
-#endif
-
- h1 = hash_dst(dst, protocol, tunnelid);
- h2 = hash_src(src);
-
- for (s = rcu_dereference_bh(head->ht[h1]); s;
- s = rcu_dereference_bh(s->next)) {
- if (dst[RSVP_DST_LEN-1] == s->dst[RSVP_DST_LEN - 1] &&
- protocol == s->protocol &&
- !(s->dpi.mask &
- (*(u32 *)(xprt + s->dpi.offset) ^ s->dpi.key)) &&
-#if RSVP_DST_LEN == 4
- dst[0] == s->dst[0] &&
- dst[1] == s->dst[1] &&
- dst[2] == s->dst[2] &&
-#endif
- tunnelid == s->tunnelid) {
-
- for (f = rcu_dereference_bh(s->ht[h2]); f;
- f = rcu_dereference_bh(f->next)) {
- if (src[RSVP_DST_LEN-1] == f->src[RSVP_DST_LEN - 1] &&
- !(f->spi.mask & (*(u32 *)(xprt + f->spi.offset) ^ f->spi.key))
-#if RSVP_DST_LEN == 4
- &&
- src[0] == f->src[0] &&
- src[1] == f->src[1] &&
- src[2] == f->src[2]
-#endif
- ) {
- *res = f->res;
- RSVP_APPLY_RESULT();
-
-matched:
- if (f->tunnelhdr == 0)
- return 0;
-
- tunnelid = f->res.classid;
- nhptr = (void *)(xprt + f->tunnelhdr - sizeof(*nhptr));
- goto restart;
- }
- }
-
- /* And wildcard bucket... */
- for (f = rcu_dereference_bh(s->ht[16]); f;
- f = rcu_dereference_bh(f->next)) {
- *res = f->res;
- RSVP_APPLY_RESULT();
- goto matched;
- }
- return -1;
- }
- }
- return -1;
-}
-
-static void rsvp_replace(struct tcf_proto *tp, struct rsvp_filter *n, u32 h)
-{
- struct rsvp_head *head = rtnl_dereference(tp->root);
- struct rsvp_session *s;
- struct rsvp_filter __rcu **ins;
- struct rsvp_filter *pins;
- unsigned int h1 = h & 0xFF;
- unsigned int h2 = (h >> 8) & 0xFF;
-
- for (s = rtnl_dereference(head->ht[h1]); s;
- s = rtnl_dereference(s->next)) {
- for (ins = &s->ht[h2], pins = rtnl_dereference(*ins); ;
- ins = &pins->next, pins = rtnl_dereference(*ins)) {
- if (pins->handle == h) {
- RCU_INIT_POINTER(n->next, pins->next);
- rcu_assign_pointer(*ins, n);
- return;
- }
- }
- }
-
- /* Something went wrong if we are trying to replace a non-existant
- * node. Mind as well halt instead of silently failing.
- */
- BUG_ON(1);
-}
-
-static void *rsvp_get(struct tcf_proto *tp, u32 handle)
-{
- struct rsvp_head *head = rtnl_dereference(tp->root);
- struct rsvp_session *s;
- struct rsvp_filter *f;
- unsigned int h1 = handle & 0xFF;
- unsigned int h2 = (handle >> 8) & 0xFF;
-
- if (h2 > 16)
- return NULL;
-
- for (s = rtnl_dereference(head->ht[h1]); s;
- s = rtnl_dereference(s->next)) {
- for (f = rtnl_dereference(s->ht[h2]); f;
- f = rtnl_dereference(f->next)) {
- if (f->handle == handle)
- return f;
- }
- }
- return NULL;
-}
-
-static int rsvp_init(struct tcf_proto *tp)
-{
- struct rsvp_head *data;
-
- data = kzalloc(sizeof(struct rsvp_head), GFP_KERNEL);
- if (data) {
- rcu_assign_pointer(tp->root, data);
- return 0;
- }
- return -ENOBUFS;
-}
-
-static void __rsvp_delete_filter(struct rsvp_filter *f)
-{
- tcf_exts_destroy(&f->exts);
- tcf_exts_put_net(&f->exts);
- kfree(f);
-}
-
-static void rsvp_delete_filter_work(struct work_struct *work)
-{
- struct rsvp_filter *f = container_of(to_rcu_work(work),
- struct rsvp_filter,
- rwork);
- rtnl_lock();
- __rsvp_delete_filter(f);
- rtnl_unlock();
-}
-
-static void rsvp_delete_filter(struct tcf_proto *tp, struct rsvp_filter *f)
-{
- tcf_unbind_filter(tp, &f->res);
- /* all classifiers are required to call tcf_exts_destroy() after rcu
- * grace period, since converted-to-rcu actions are relying on that
- * in cleanup() callback
- */
- if (tcf_exts_get_net(&f->exts))
- tcf_queue_work(&f->rwork, rsvp_delete_filter_work);
- else
- __rsvp_delete_filter(f);
-}
-
-static void rsvp_destroy(struct tcf_proto *tp, bool rtnl_held,
- struct netlink_ext_ack *extack)
-{
- struct rsvp_head *data = rtnl_dereference(tp->root);
- int h1, h2;
-
- if (data == NULL)
- return;
-
- for (h1 = 0; h1 < 256; h1++) {
- struct rsvp_session *s;
-
- while ((s = rtnl_dereference(data->ht[h1])) != NULL) {
- RCU_INIT_POINTER(data->ht[h1], s->next);
-
- for (h2 = 0; h2 <= 16; h2++) {
- struct rsvp_filter *f;
-
- while ((f = rtnl_dereference(s->ht[h2])) != NULL) {
- rcu_assign_pointer(s->ht[h2], f->next);
- rsvp_delete_filter(tp, f);
- }
- }
- kfree_rcu(s, rcu);
- }
- }
- kfree_rcu(data, rcu);
-}
-
-static int rsvp_delete(struct tcf_proto *tp, void *arg, bool *last,
- bool rtnl_held, struct netlink_ext_ack *extack)
-{
- struct rsvp_head *head = rtnl_dereference(tp->root);
- struct rsvp_filter *nfp, *f = arg;
- struct rsvp_filter __rcu **fp;
- unsigned int h = f->handle;
- struct rsvp_session __rcu **sp;
- struct rsvp_session *nsp, *s = f->sess;
- int i, h1;
-
- fp = &s->ht[(h >> 8) & 0xFF];
- for (nfp = rtnl_dereference(*fp); nfp;
- fp = &nfp->next, nfp = rtnl_dereference(*fp)) {
- if (nfp == f) {
- RCU_INIT_POINTER(*fp, f->next);
- rsvp_delete_filter(tp, f);
-
- /* Strip tree */
-
- for (i = 0; i <= 16; i++)
- if (s->ht[i])
- goto out;
-
- /* OK, session has no flows */
- sp = &head->ht[h & 0xFF];
- for (nsp = rtnl_dereference(*sp); nsp;
- sp = &nsp->next, nsp = rtnl_dereference(*sp)) {
- if (nsp == s) {
- RCU_INIT_POINTER(*sp, s->next);
- kfree_rcu(s, rcu);
- goto out;
- }
- }
-
- break;
- }
- }
-
-out:
- *last = true;
- for (h1 = 0; h1 < 256; h1++) {
- if (rcu_access_pointer(head->ht[h1])) {
- *last = false;
- break;
- }
- }
-
- return 0;
-}
-
-static unsigned int gen_handle(struct tcf_proto *tp, unsigned salt)
-{
- struct rsvp_head *data = rtnl_dereference(tp->root);
- int i = 0xFFFF;
-
- while (i-- > 0) {
- u32 h;
-
- if ((data->hgenerator += 0x10000) == 0)
- data->hgenerator = 0x10000;
- h = data->hgenerator|salt;
- if (!rsvp_get(tp, h))
- return h;
- }
- return 0;
-}
-
-static int tunnel_bts(struct rsvp_head *data)
-{
- int n = data->tgenerator >> 5;
- u32 b = 1 << (data->tgenerator & 0x1F);
-
- if (data->tmap[n] & b)
- return 0;
- data->tmap[n] |= b;
- return 1;
-}
-
-static void tunnel_recycle(struct rsvp_head *data)
-{
- struct rsvp_session __rcu **sht = data->ht;
- u32 tmap[256/32];
- int h1, h2;
-
- memset(tmap, 0, sizeof(tmap));
-
- for (h1 = 0; h1 < 256; h1++) {
- struct rsvp_session *s;
- for (s = rtnl_dereference(sht[h1]); s;
- s = rtnl_dereference(s->next)) {
- for (h2 = 0; h2 <= 16; h2++) {
- struct rsvp_filter *f;
-
- for (f = rtnl_dereference(s->ht[h2]); f;
- f = rtnl_dereference(f->next)) {
- if (f->tunnelhdr == 0)
- continue;
- data->tgenerator = f->res.classid;
- tunnel_bts(data);
- }
- }
- }
- }
-
- memcpy(data->tmap, tmap, sizeof(tmap));
-}
-
-static u32 gen_tunnel(struct rsvp_head *data)
-{
- int i, k;
-
- for (k = 0; k < 2; k++) {
- for (i = 255; i > 0; i--) {
- if (++data->tgenerator == 0)
- data->tgenerator = 1;
- if (tunnel_bts(data))
- return data->tgenerator;
- }
- tunnel_recycle(data);
- }
- return 0;
-}
-
-static const struct nla_policy rsvp_policy[TCA_RSVP_MAX + 1] = {
- [TCA_RSVP_CLASSID] = { .type = NLA_U32 },
- [TCA_RSVP_DST] = { .len = RSVP_DST_LEN * sizeof(u32) },
- [TCA_RSVP_SRC] = { .len = RSVP_DST_LEN * sizeof(u32) },
- [TCA_RSVP_PINFO] = { .len = sizeof(struct tc_rsvp_pinfo) },
-};
-
-static int rsvp_change(struct net *net, struct sk_buff *in_skb,
- struct tcf_proto *tp, unsigned long base,
- u32 handle,
- struct nlattr **tca,
- void **arg, bool ovr, bool rtnl_held,
- struct netlink_ext_ack *extack)
-{
- struct rsvp_head *data = rtnl_dereference(tp->root);
- struct rsvp_filter *f, *nfp;
- struct rsvp_filter __rcu **fp;
- struct rsvp_session *nsp, *s;
- struct rsvp_session __rcu **sp;
- struct tc_rsvp_pinfo *pinfo = NULL;
- struct nlattr *opt = tca[TCA_OPTIONS];
- struct nlattr *tb[TCA_RSVP_MAX + 1];
- struct tcf_exts e;
- unsigned int h1, h2;
- __be32 *dst;
- int err;
-
- if (opt == NULL)
- return handle ? -EINVAL : 0;
-
- err = nla_parse_nested_deprecated(tb, TCA_RSVP_MAX, opt, rsvp_policy,
- NULL);
- if (err < 0)
- return err;
-
- err = tcf_exts_init(&e, net, TCA_RSVP_ACT, TCA_RSVP_POLICE);
- if (err < 0)
- return err;
- err = tcf_exts_validate(net, tp, tb, tca[TCA_RATE], &e, ovr, true,
- extack);
- if (err < 0)
- goto errout2;
-
- f = *arg;
- if (f) {
- /* Node exists: adjust only classid */
- struct rsvp_filter *n;
-
- if (f->handle != handle && handle)
- goto errout2;
-
- n = kmemdup(f, sizeof(*f), GFP_KERNEL);
- if (!n) {
- err = -ENOMEM;
- goto errout2;
- }
-
- err = tcf_exts_init(&n->exts, net, TCA_RSVP_ACT,
- TCA_RSVP_POLICE);
- if (err < 0) {
- kfree(n);
- goto errout2;
- }
-
- if (tb[TCA_RSVP_CLASSID]) {
- n->res.classid = nla_get_u32(tb[TCA_RSVP_CLASSID]);
- tcf_bind_filter(tp, &n->res, base);
- }
-
- tcf_exts_change(&n->exts, &e);
- rsvp_replace(tp, n, handle);
- return 0;
- }
-
- /* Now more serious part... */
- err = -EINVAL;
- if (handle)
- goto errout2;
- if (tb[TCA_RSVP_DST] == NULL)
- goto errout2;
-
- err = -ENOBUFS;
- f = kzalloc(sizeof(struct rsvp_filter), GFP_KERNEL);
- if (f == NULL)
- goto errout2;
-
- err = tcf_exts_init(&f->exts, net, TCA_RSVP_ACT, TCA_RSVP_POLICE);
- if (err < 0)
- goto errout;
- h2 = 16;
- if (tb[TCA_RSVP_SRC]) {
- memcpy(f->src, nla_data(tb[TCA_RSVP_SRC]), sizeof(f->src));
- h2 = hash_src(f->src);
- }
- if (tb[TCA_RSVP_PINFO]) {
- pinfo = nla_data(tb[TCA_RSVP_PINFO]);
- f->spi = pinfo->spi;
- f->tunnelhdr = pinfo->tunnelhdr;
- }
- if (tb[TCA_RSVP_CLASSID])
- f->res.classid = nla_get_u32(tb[TCA_RSVP_CLASSID]);
-
- dst = nla_data(tb[TCA_RSVP_DST]);
- h1 = hash_dst(dst, pinfo ? pinfo->protocol : 0, pinfo ? pinfo->tunnelid : 0);
-
- err = -ENOMEM;
- if ((f->handle = gen_handle(tp, h1 | (h2<<8))) == 0)
- goto errout;
-
- if (f->tunnelhdr) {
- err = -EINVAL;
- if (f->res.classid > 255)
- goto errout;
-
- err = -ENOMEM;
- if (f->res.classid == 0 &&
- (f->res.classid = gen_tunnel(data)) == 0)
- goto errout;
- }
-
- for (sp = &data->ht[h1];
- (s = rtnl_dereference(*sp)) != NULL;
- sp = &s->next) {
- if (dst[RSVP_DST_LEN-1] == s->dst[RSVP_DST_LEN-1] &&
- pinfo && pinfo->protocol == s->protocol &&
- memcmp(&pinfo->dpi, &s->dpi, sizeof(s->dpi)) == 0 &&
-#if RSVP_DST_LEN == 4
- dst[0] == s->dst[0] &&
- dst[1] == s->dst[1] &&
- dst[2] == s->dst[2] &&
-#endif
- pinfo->tunnelid == s->tunnelid) {
-
-insert:
- /* OK, we found appropriate session */
-
- fp = &s->ht[h2];
-
- f->sess = s;
- if (f->tunnelhdr == 0)
- tcf_bind_filter(tp, &f->res, base);
-
- tcf_exts_change(&f->exts, &e);
-
- fp = &s->ht[h2];
- for (nfp = rtnl_dereference(*fp); nfp;
- fp = &nfp->next, nfp = rtnl_dereference(*fp)) {
- __u32 mask = nfp->spi.mask & f->spi.mask;
-
- if (mask != f->spi.mask)
- break;
- }
- RCU_INIT_POINTER(f->next, nfp);
- rcu_assign_pointer(*fp, f);
-
- *arg = f;
- return 0;
- }
- }
-
- /* No session found. Create new one. */
-
- err = -ENOBUFS;
- s = kzalloc(sizeof(struct rsvp_session), GFP_KERNEL);
- if (s == NULL)
- goto errout;
- memcpy(s->dst, dst, sizeof(s->dst));
-
- if (pinfo) {
- s->dpi = pinfo->dpi;
- s->protocol = pinfo->protocol;
- s->tunnelid = pinfo->tunnelid;
- }
- sp = &data->ht[h1];
- for (nsp = rtnl_dereference(*sp); nsp;
- sp = &nsp->next, nsp = rtnl_dereference(*sp)) {
- if ((nsp->dpi.mask & s->dpi.mask) != s->dpi.mask)
- break;
- }
- RCU_INIT_POINTER(s->next, nsp);
- rcu_assign_pointer(*sp, s);
-
- goto insert;
-
-errout:
- tcf_exts_destroy(&f->exts);
- kfree(f);
-errout2:
- tcf_exts_destroy(&e);
- return err;
-}
-
-static void rsvp_walk(struct tcf_proto *tp, struct tcf_walker *arg,
- bool rtnl_held)
-{
- struct rsvp_head *head = rtnl_dereference(tp->root);
- unsigned int h, h1;
-
- if (arg->stop)
- return;
-
- for (h = 0; h < 256; h++) {
- struct rsvp_session *s;
-
- for (s = rtnl_dereference(head->ht[h]); s;
- s = rtnl_dereference(s->next)) {
- for (h1 = 0; h1 <= 16; h1++) {
- struct rsvp_filter *f;
-
- for (f = rtnl_dereference(s->ht[h1]); f;
- f = rtnl_dereference(f->next)) {
- if (arg->count < arg->skip) {
- arg->count++;
- continue;
- }
- if (arg->fn(tp, f, arg) < 0) {
- arg->stop = 1;
- return;
- }
- arg->count++;
- }
- }
- }
- }
-}
-
-static int rsvp_dump(struct net *net, struct tcf_proto *tp, void *fh,
- struct sk_buff *skb, struct tcmsg *t, bool rtnl_held)
-{
- struct rsvp_filter *f = fh;
- struct rsvp_session *s;
- struct nlattr *nest;
- struct tc_rsvp_pinfo pinfo;
-
- if (f == NULL)
- return skb->len;
- s = f->sess;
-
- t->tcm_handle = f->handle;
-
- nest = nla_nest_start_noflag(skb, TCA_OPTIONS);
- if (nest == NULL)
- goto nla_put_failure;
-
- if (nla_put(skb, TCA_RSVP_DST, sizeof(s->dst), &s->dst))
- goto nla_put_failure;
- pinfo.dpi = s->dpi;
- pinfo.spi = f->spi;
- pinfo.protocol = s->protocol;
- pinfo.tunnelid = s->tunnelid;
- pinfo.tunnelhdr = f->tunnelhdr;
- pinfo.pad = 0;
- if (nla_put(skb, TCA_RSVP_PINFO, sizeof(pinfo), &pinfo))
- goto nla_put_failure;
- if (f->res.classid &&
- nla_put_u32(skb, TCA_RSVP_CLASSID, f->res.classid))
- goto nla_put_failure;
- if (((f->handle >> 8) & 0xFF) != 16 &&
- nla_put(skb, TCA_RSVP_SRC, sizeof(f->src), f->src))
- goto nla_put_failure;
-
- if (tcf_exts_dump(skb, &f->exts) < 0)
- goto nla_put_failure;
-
- nla_nest_end(skb, nest);
-
- if (tcf_exts_dump_stats(skb, &f->exts) < 0)
- goto nla_put_failure;
- return skb->len;
-
-nla_put_failure:
- nla_nest_cancel(skb, nest);
- return -1;
-}
-
-static void rsvp_bind_class(void *fh, u32 classid, unsigned long cl, void *q,
- unsigned long base)
-{
- struct rsvp_filter *f = fh;
-
- if (f && f->res.classid == classid) {
- if (cl)
- __tcf_bind_filter(q, &f->res, base);
- else
- __tcf_unbind_filter(q, &f->res);
- }
-}
-
-static struct tcf_proto_ops RSVP_OPS __read_mostly = {
- .kind = RSVP_ID,
- .classify = rsvp_classify,
- .init = rsvp_init,
- .destroy = rsvp_destroy,
- .get = rsvp_get,
- .change = rsvp_change,
- .delete = rsvp_delete,
- .walk = rsvp_walk,
- .dump = rsvp_dump,
- .bind_class = rsvp_bind_class,
- .owner = THIS_MODULE,
-};
-
-static int __init init_rsvp(void)
-{
- return register_tcf_proto_ops(&RSVP_OPS);
-}
-
-static void __exit exit_rsvp(void)
-{
- unregister_tcf_proto_ops(&RSVP_OPS);
-}
-
-module_init(init_rsvp)
-module_exit(exit_rsvp)
diff --git a/net/sched/cls_rsvp6.c b/net/sched/cls_rsvp6.c
deleted file mode 100644
index 64078846000e..000000000000
--- a/net/sched/cls_rsvp6.c
+++ /dev/null
@@ -1,24 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-or-later
-/*
- * net/sched/cls_rsvp6.c Special RSVP packet classifier for IPv6.
- *
- * Authors: Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru>
- */
-
-#include <linux/module.h>
-#include <linux/types.h>
-#include <linux/kernel.h>
-#include <linux/string.h>
-#include <linux/errno.h>
-#include <linux/ipv6.h>
-#include <linux/skbuff.h>
-#include <net/act_api.h>
-#include <net/pkt_cls.h>
-#include <net/netlink.h>
-
-#define RSVP_DST_LEN 4
-#define RSVP_ID "rsvp6"
-#define RSVP_OPS cls_rsvp6_ops
-
-#include "cls_rsvp.h"
-MODULE_LICENSE("GPL");
--
2.34.1
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