Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* net/sched/sch_dsmark.c - Differentiated Services field marker */ |
| 2 | |
| 3 | /* Written 1998-2000 by Werner Almesberger, EPFL ICA */ |
| 4 | |
| 5 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 6 | #include <linux/module.h> |
| 7 | #include <linux/init.h> |
| 8 | #include <linux/types.h> |
| 9 | #include <linux/string.h> |
| 10 | #include <linux/errno.h> |
| 11 | #include <linux/skbuff.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 12 | #include <linux/rtnetlink.h> |
David S. Miller | 5b0ac72 | 2008-01-21 02:21:45 -0800 | [diff] [blame] | 13 | #include <linux/bitops.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 14 | #include <net/pkt_sched.h> |
| 15 | #include <net/dsfield.h> |
| 16 | #include <net/inet_ecn.h> |
| 17 | #include <asm/byteorder.h> |
| 18 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 19 | /* |
| 20 | * classid class marking |
| 21 | * ------- ----- ------- |
| 22 | * n/a 0 n/a |
| 23 | * x:0 1 use entry [0] |
| 24 | * ... ... ... |
| 25 | * x:y y>0 y+1 use entry [y] |
| 26 | * ... ... ... |
| 27 | * x:indices-1 indices use entry [indices-1] |
| 28 | * ... ... ... |
| 29 | * x:y y+1 use entry [y & (indices-1)] |
| 30 | * ... ... ... |
| 31 | * 0xffff 0x10000 use entry [indices-1] |
| 32 | */ |
| 33 | |
| 34 | |
| 35 | #define NO_DEFAULT_INDEX (1 << 16) |
| 36 | |
| 37 | struct dsmark_qdisc_data { |
| 38 | struct Qdisc *q; |
| 39 | struct tcf_proto *filter_list; |
Thomas Graf | af0d114 | 2005-06-18 22:53:29 -0700 | [diff] [blame] | 40 | u8 *mask; /* "owns" the array */ |
| 41 | u8 *value; |
| 42 | u16 indices; |
| 43 | u32 default_index; /* index range is 0...0xffff */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 44 | int set_tc_index; |
| 45 | }; |
| 46 | |
Thomas Graf | 758cc43 | 2005-06-18 22:52:54 -0700 | [diff] [blame] | 47 | static inline int dsmark_valid_index(struct dsmark_qdisc_data *p, u16 index) |
| 48 | { |
| 49 | return (index <= p->indices && index > 0); |
| 50 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 51 | |
| 52 | /* ------------------------- Class/flow operations ------------------------- */ |
| 53 | |
Thomas Graf | af0d114 | 2005-06-18 22:53:29 -0700 | [diff] [blame] | 54 | static int dsmark_graft(struct Qdisc *sch, unsigned long arg, |
| 55 | struct Qdisc *new, struct Qdisc **old) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 56 | { |
Stephen Hemminger | 81da99e | 2008-01-21 00:50:09 -0800 | [diff] [blame] | 57 | struct dsmark_qdisc_data *p = qdisc_priv(sch); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 58 | |
Stephen Hemminger | 81da99e | 2008-01-21 00:50:09 -0800 | [diff] [blame] | 59 | pr_debug("dsmark_graft(sch %p,[qdisc %p],new %p,old %p)\n", |
Thomas Graf | af0d114 | 2005-06-18 22:53:29 -0700 | [diff] [blame] | 60 | sch, p, new, old); |
Thomas Graf | 486b53e | 2005-05-31 15:16:52 -0700 | [diff] [blame] | 61 | |
| 62 | if (new == NULL) { |
David S. Miller | 5ce2d48 | 2008-07-08 17:06:30 -0700 | [diff] [blame] | 63 | new = qdisc_create_dflt(qdisc_dev(sch), sch->dev_queue, |
David S. Miller | bb949fb | 2008-07-08 16:55:56 -0700 | [diff] [blame] | 64 | &pfifo_qdisc_ops, |
Patrick McHardy | 9f9afec | 2006-11-29 17:35:18 -0800 | [diff] [blame] | 65 | sch->handle); |
Thomas Graf | 486b53e | 2005-05-31 15:16:52 -0700 | [diff] [blame] | 66 | if (new == NULL) |
| 67 | new = &noop_qdisc; |
| 68 | } |
| 69 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 70 | sch_tree_lock(sch); |
Thomas Graf | af0d114 | 2005-06-18 22:53:29 -0700 | [diff] [blame] | 71 | *old = xchg(&p->q, new); |
Patrick McHardy | 5e50da0 | 2006-11-29 17:36:20 -0800 | [diff] [blame] | 72 | qdisc_tree_decrease_qlen(*old, (*old)->q.qlen); |
Thomas Graf | af0d114 | 2005-06-18 22:53:29 -0700 | [diff] [blame] | 73 | qdisc_reset(*old); |
Thomas Graf | af0d114 | 2005-06-18 22:53:29 -0700 | [diff] [blame] | 74 | sch_tree_unlock(sch); |
| 75 | |
YOSHIFUJI Hideaki | 10297b9 | 2007-02-09 23:25:16 +0900 | [diff] [blame] | 76 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 77 | } |
| 78 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 79 | static struct Qdisc *dsmark_leaf(struct Qdisc *sch, unsigned long arg) |
| 80 | { |
Stephen Hemminger | 81da99e | 2008-01-21 00:50:09 -0800 | [diff] [blame] | 81 | struct dsmark_qdisc_data *p = qdisc_priv(sch); |
| 82 | return p->q; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 83 | } |
| 84 | |
Thomas Graf | af0d114 | 2005-06-18 22:53:29 -0700 | [diff] [blame] | 85 | static unsigned long dsmark_get(struct Qdisc *sch, u32 classid) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 86 | { |
Stephen Hemminger | 81da99e | 2008-01-21 00:50:09 -0800 | [diff] [blame] | 87 | pr_debug("dsmark_get(sch %p,[qdisc %p],classid %x)\n", |
| 88 | sch, qdisc_priv(sch), classid); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 89 | |
Thomas Graf | af0d114 | 2005-06-18 22:53:29 -0700 | [diff] [blame] | 90 | return TC_H_MIN(classid) + 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 91 | } |
| 92 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 93 | static unsigned long dsmark_bind_filter(struct Qdisc *sch, |
Thomas Graf | af0d114 | 2005-06-18 22:53:29 -0700 | [diff] [blame] | 94 | unsigned long parent, u32 classid) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 95 | { |
Thomas Graf | af0d114 | 2005-06-18 22:53:29 -0700 | [diff] [blame] | 96 | return dsmark_get(sch, classid); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 97 | } |
| 98 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 99 | static void dsmark_put(struct Qdisc *sch, unsigned long cl) |
| 100 | { |
| 101 | } |
| 102 | |
Patrick McHardy | 27a3421 | 2008-01-23 20:35:39 -0800 | [diff] [blame] | 103 | static const struct nla_policy dsmark_policy[TCA_DSMARK_MAX + 1] = { |
| 104 | [TCA_DSMARK_INDICES] = { .type = NLA_U16 }, |
| 105 | [TCA_DSMARK_DEFAULT_INDEX] = { .type = NLA_U16 }, |
| 106 | [TCA_DSMARK_SET_TC_INDEX] = { .type = NLA_FLAG }, |
| 107 | [TCA_DSMARK_MASK] = { .type = NLA_U8 }, |
| 108 | [TCA_DSMARK_VALUE] = { .type = NLA_U8 }, |
| 109 | }; |
| 110 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 111 | static int dsmark_change(struct Qdisc *sch, u32 classid, u32 parent, |
Patrick McHardy | 1e90474 | 2008-01-22 22:11:17 -0800 | [diff] [blame] | 112 | struct nlattr **tca, unsigned long *arg) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 113 | { |
Stephen Hemminger | 81da99e | 2008-01-21 00:50:09 -0800 | [diff] [blame] | 114 | struct dsmark_qdisc_data *p = qdisc_priv(sch); |
Patrick McHardy | 1e90474 | 2008-01-22 22:11:17 -0800 | [diff] [blame] | 115 | struct nlattr *opt = tca[TCA_OPTIONS]; |
| 116 | struct nlattr *tb[TCA_DSMARK_MAX + 1]; |
Thomas Graf | 758cc43 | 2005-06-18 22:52:54 -0700 | [diff] [blame] | 117 | int err = -EINVAL; |
| 118 | u8 mask = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 119 | |
Stephen Hemminger | 81da99e | 2008-01-21 00:50:09 -0800 | [diff] [blame] | 120 | pr_debug("dsmark_change(sch %p,[qdisc %p],classid %x,parent %x)," |
Thomas Graf | 758cc43 | 2005-06-18 22:52:54 -0700 | [diff] [blame] | 121 | "arg 0x%lx\n", sch, p, classid, parent, *arg); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 122 | |
Thomas Graf | 758cc43 | 2005-06-18 22:52:54 -0700 | [diff] [blame] | 123 | if (!dsmark_valid_index(p, *arg)) { |
| 124 | err = -ENOENT; |
Patrick McHardy | 1e90474 | 2008-01-22 22:11:17 -0800 | [diff] [blame] | 125 | goto errout; |
Thomas Graf | 758cc43 | 2005-06-18 22:52:54 -0700 | [diff] [blame] | 126 | } |
| 127 | |
Patrick McHardy | cee6372 | 2008-01-23 20:33:32 -0800 | [diff] [blame] | 128 | if (!opt) |
Patrick McHardy | 1e90474 | 2008-01-22 22:11:17 -0800 | [diff] [blame] | 129 | goto errout; |
Thomas Graf | 758cc43 | 2005-06-18 22:52:54 -0700 | [diff] [blame] | 130 | |
Patrick McHardy | 27a3421 | 2008-01-23 20:35:39 -0800 | [diff] [blame] | 131 | err = nla_parse_nested(tb, TCA_DSMARK_MAX, opt, dsmark_policy); |
Patrick McHardy | cee6372 | 2008-01-23 20:33:32 -0800 | [diff] [blame] | 132 | if (err < 0) |
Patrick McHardy | 27a3421 | 2008-01-23 20:35:39 -0800 | [diff] [blame] | 133 | goto errout; |
Patrick McHardy | cee6372 | 2008-01-23 20:33:32 -0800 | [diff] [blame] | 134 | |
Patrick McHardy | 27a3421 | 2008-01-23 20:35:39 -0800 | [diff] [blame] | 135 | if (tb[TCA_DSMARK_MASK]) |
Patrick McHardy | 1e90474 | 2008-01-22 22:11:17 -0800 | [diff] [blame] | 136 | mask = nla_get_u8(tb[TCA_DSMARK_MASK]); |
Patrick McHardy | 27a3421 | 2008-01-23 20:35:39 -0800 | [diff] [blame] | 137 | |
| 138 | if (tb[TCA_DSMARK_VALUE]) |
Patrick McHardy | 1e90474 | 2008-01-22 22:11:17 -0800 | [diff] [blame] | 139 | p->value[*arg-1] = nla_get_u8(tb[TCA_DSMARK_VALUE]); |
Thomas Graf | 758cc43 | 2005-06-18 22:52:54 -0700 | [diff] [blame] | 140 | |
Patrick McHardy | 1e90474 | 2008-01-22 22:11:17 -0800 | [diff] [blame] | 141 | if (tb[TCA_DSMARK_MASK]) |
Thomas Graf | 758cc43 | 2005-06-18 22:52:54 -0700 | [diff] [blame] | 142 | p->mask[*arg-1] = mask; |
| 143 | |
| 144 | err = 0; |
| 145 | |
Patrick McHardy | 1e90474 | 2008-01-22 22:11:17 -0800 | [diff] [blame] | 146 | errout: |
Thomas Graf | 758cc43 | 2005-06-18 22:52:54 -0700 | [diff] [blame] | 147 | return err; |
| 148 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 149 | |
Thomas Graf | af0d114 | 2005-06-18 22:53:29 -0700 | [diff] [blame] | 150 | static int dsmark_delete(struct Qdisc *sch, unsigned long arg) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 151 | { |
Stephen Hemminger | 81da99e | 2008-01-21 00:50:09 -0800 | [diff] [blame] | 152 | struct dsmark_qdisc_data *p = qdisc_priv(sch); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 153 | |
Thomas Graf | af0d114 | 2005-06-18 22:53:29 -0700 | [diff] [blame] | 154 | if (!dsmark_valid_index(p, arg)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 155 | return -EINVAL; |
YOSHIFUJI Hideaki | 10297b9 | 2007-02-09 23:25:16 +0900 | [diff] [blame] | 156 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 157 | p->mask[arg-1] = 0xff; |
| 158 | p->value[arg-1] = 0; |
Thomas Graf | af0d114 | 2005-06-18 22:53:29 -0700 | [diff] [blame] | 159 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 160 | return 0; |
| 161 | } |
| 162 | |
Stephen Hemminger | 9d127fb | 2008-01-21 02:24:21 -0800 | [diff] [blame] | 163 | static void dsmark_walk(struct Qdisc *sch, struct qdisc_walker *walker) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 164 | { |
Stephen Hemminger | 81da99e | 2008-01-21 00:50:09 -0800 | [diff] [blame] | 165 | struct dsmark_qdisc_data *p = qdisc_priv(sch); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 166 | int i; |
| 167 | |
Stephen Hemminger | 81da99e | 2008-01-21 00:50:09 -0800 | [diff] [blame] | 168 | pr_debug("dsmark_walk(sch %p,[qdisc %p],walker %p)\n", sch, p, walker); |
Thomas Graf | af0d114 | 2005-06-18 22:53:29 -0700 | [diff] [blame] | 169 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 170 | if (walker->stop) |
| 171 | return; |
Thomas Graf | af0d114 | 2005-06-18 22:53:29 -0700 | [diff] [blame] | 172 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 173 | for (i = 0; i < p->indices; i++) { |
| 174 | if (p->mask[i] == 0xff && !p->value[i]) |
Thomas Graf | 0451eb0 | 2005-05-31 15:15:58 -0700 | [diff] [blame] | 175 | goto ignore; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 176 | if (walker->count >= walker->skip) { |
| 177 | if (walker->fn(sch, i+1, walker) < 0) { |
| 178 | walker->stop = 1; |
| 179 | break; |
| 180 | } |
| 181 | } |
YOSHIFUJI Hideaki | 10297b9 | 2007-02-09 23:25:16 +0900 | [diff] [blame] | 182 | ignore: |
Thomas Graf | 0451eb0 | 2005-05-31 15:15:58 -0700 | [diff] [blame] | 183 | walker->count++; |
YOSHIFUJI Hideaki | 10297b9 | 2007-02-09 23:25:16 +0900 | [diff] [blame] | 184 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 185 | } |
| 186 | |
Stephen Hemminger | 9d127fb | 2008-01-21 02:24:21 -0800 | [diff] [blame] | 187 | static inline struct tcf_proto **dsmark_find_tcf(struct Qdisc *sch, |
| 188 | unsigned long cl) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 189 | { |
Stephen Hemminger | 81da99e | 2008-01-21 00:50:09 -0800 | [diff] [blame] | 190 | struct dsmark_qdisc_data *p = qdisc_priv(sch); |
| 191 | return &p->filter_list; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 192 | } |
| 193 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 194 | /* --------------------------- Qdisc operations ---------------------------- */ |
| 195 | |
Stephen Hemminger | 9d127fb | 2008-01-21 02:24:21 -0800 | [diff] [blame] | 196 | static int dsmark_enqueue(struct sk_buff *skb, struct Qdisc *sch) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 197 | { |
Stephen Hemminger | 81da99e | 2008-01-21 00:50:09 -0800 | [diff] [blame] | 198 | struct dsmark_qdisc_data *p = qdisc_priv(sch); |
Thomas Graf | af0d114 | 2005-06-18 22:53:29 -0700 | [diff] [blame] | 199 | int err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 200 | |
Stephen Hemminger | 81da99e | 2008-01-21 00:50:09 -0800 | [diff] [blame] | 201 | pr_debug("dsmark_enqueue(skb %p,sch %p,[qdisc %p])\n", skb, sch, p); |
Thomas Graf | af0d114 | 2005-06-18 22:53:29 -0700 | [diff] [blame] | 202 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 203 | if (p->set_tc_index) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 204 | switch (skb->protocol) { |
Arnaldo Carvalho de Melo | 6067804 | 2008-09-20 22:20:49 -0700 | [diff] [blame^] | 205 | case htons(ETH_P_IP): |
Stephen Hemminger | 9d127fb | 2008-01-21 02:24:21 -0800 | [diff] [blame] | 206 | if (skb_cow_head(skb, sizeof(struct iphdr))) |
| 207 | goto drop; |
Stephen Hemminger | 4c30719 | 2008-01-21 02:23:49 -0800 | [diff] [blame] | 208 | |
Stephen Hemminger | 9d127fb | 2008-01-21 02:24:21 -0800 | [diff] [blame] | 209 | skb->tc_index = ipv4_get_dsfield(ip_hdr(skb)) |
| 210 | & ~INET_ECN_MASK; |
| 211 | break; |
Stephen Hemminger | 4c30719 | 2008-01-21 02:23:49 -0800 | [diff] [blame] | 212 | |
Arnaldo Carvalho de Melo | 6067804 | 2008-09-20 22:20:49 -0700 | [diff] [blame^] | 213 | case htons(ETH_P_IPV6): |
Stephen Hemminger | 9d127fb | 2008-01-21 02:24:21 -0800 | [diff] [blame] | 214 | if (skb_cow_head(skb, sizeof(struct ipv6hdr))) |
| 215 | goto drop; |
Stephen Hemminger | 4c30719 | 2008-01-21 02:23:49 -0800 | [diff] [blame] | 216 | |
Stephen Hemminger | 9d127fb | 2008-01-21 02:24:21 -0800 | [diff] [blame] | 217 | skb->tc_index = ipv6_get_dsfield(ipv6_hdr(skb)) |
| 218 | & ~INET_ECN_MASK; |
| 219 | break; |
| 220 | default: |
| 221 | skb->tc_index = 0; |
| 222 | break; |
Stephen Hemminger | 3ff50b7 | 2007-04-20 17:09:22 -0700 | [diff] [blame] | 223 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 224 | } |
Thomas Graf | af0d114 | 2005-06-18 22:53:29 -0700 | [diff] [blame] | 225 | |
| 226 | if (TC_H_MAJ(skb->priority) == sch->handle) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 227 | skb->tc_index = TC_H_MIN(skb->priority); |
Thomas Graf | af0d114 | 2005-06-18 22:53:29 -0700 | [diff] [blame] | 228 | else { |
| 229 | struct tcf_result res; |
| 230 | int result = tc_classify(skb, p->filter_list, &res); |
| 231 | |
Stephen Hemminger | 81da99e | 2008-01-21 00:50:09 -0800 | [diff] [blame] | 232 | pr_debug("result %d class 0x%04x\n", result, res.classid); |
Thomas Graf | af0d114 | 2005-06-18 22:53:29 -0700 | [diff] [blame] | 233 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 234 | switch (result) { |
Patrick McHardy | f6853e2 | 2007-07-15 00:02:10 -0700 | [diff] [blame] | 235 | #ifdef CONFIG_NET_CLS_ACT |
| 236 | case TC_ACT_QUEUED: |
| 237 | case TC_ACT_STOLEN: |
| 238 | kfree_skb(skb); |
Jarek Poplawski | 378a2f0 | 2008-08-04 22:31:03 -0700 | [diff] [blame] | 239 | return NET_XMIT_SUCCESS | __NET_XMIT_STOLEN; |
Stephen Hemminger | 4c30719 | 2008-01-21 02:23:49 -0800 | [diff] [blame] | 240 | |
Patrick McHardy | f6853e2 | 2007-07-15 00:02:10 -0700 | [diff] [blame] | 241 | case TC_ACT_SHOT: |
Stephen Hemminger | 4c30719 | 2008-01-21 02:23:49 -0800 | [diff] [blame] | 242 | goto drop; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 243 | #endif |
Patrick McHardy | c3bc7cf | 2007-07-15 00:03:05 -0700 | [diff] [blame] | 244 | case TC_ACT_OK: |
Patrick McHardy | f6853e2 | 2007-07-15 00:02:10 -0700 | [diff] [blame] | 245 | skb->tc_index = TC_H_MIN(res.classid); |
| 246 | break; |
Stephen Hemminger | 4c30719 | 2008-01-21 02:23:49 -0800 | [diff] [blame] | 247 | |
Patrick McHardy | f6853e2 | 2007-07-15 00:02:10 -0700 | [diff] [blame] | 248 | default: |
| 249 | if (p->default_index != NO_DEFAULT_INDEX) |
| 250 | skb->tc_index = p->default_index; |
| 251 | break; |
Stephen Hemminger | 3ff50b7 | 2007-04-20 17:09:22 -0700 | [diff] [blame] | 252 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 253 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 254 | |
Jussi Kivilinna | 5f86173 | 2008-07-20 00:08:04 -0700 | [diff] [blame] | 255 | err = qdisc_enqueue(skb, p->q); |
Thomas Graf | af0d114 | 2005-06-18 22:53:29 -0700 | [diff] [blame] | 256 | if (err != NET_XMIT_SUCCESS) { |
Jarek Poplawski | 378a2f0 | 2008-08-04 22:31:03 -0700 | [diff] [blame] | 257 | if (net_xmit_drop_count(err)) |
| 258 | sch->qstats.drops++; |
Thomas Graf | af0d114 | 2005-06-18 22:53:29 -0700 | [diff] [blame] | 259 | return err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 260 | } |
Thomas Graf | af0d114 | 2005-06-18 22:53:29 -0700 | [diff] [blame] | 261 | |
Jussi Kivilinna | 0abf77e | 2008-07-20 00:08:27 -0700 | [diff] [blame] | 262 | sch->bstats.bytes += qdisc_pkt_len(skb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 263 | sch->bstats.packets++; |
| 264 | sch->q.qlen++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 265 | |
Thomas Graf | af0d114 | 2005-06-18 22:53:29 -0700 | [diff] [blame] | 266 | return NET_XMIT_SUCCESS; |
Stephen Hemminger | 4c30719 | 2008-01-21 02:23:49 -0800 | [diff] [blame] | 267 | |
| 268 | drop: |
| 269 | kfree_skb(skb); |
| 270 | sch->qstats.drops++; |
Jarek Poplawski | c27f339 | 2008-08-04 22:39:11 -0700 | [diff] [blame] | 271 | return NET_XMIT_SUCCESS | __NET_XMIT_BYPASS; |
Thomas Graf | af0d114 | 2005-06-18 22:53:29 -0700 | [diff] [blame] | 272 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 273 | |
| 274 | static struct sk_buff *dsmark_dequeue(struct Qdisc *sch) |
| 275 | { |
Stephen Hemminger | 81da99e | 2008-01-21 00:50:09 -0800 | [diff] [blame] | 276 | struct dsmark_qdisc_data *p = qdisc_priv(sch); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 277 | struct sk_buff *skb; |
Thomas Graf | af0d114 | 2005-06-18 22:53:29 -0700 | [diff] [blame] | 278 | u32 index; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 279 | |
Stephen Hemminger | 81da99e | 2008-01-21 00:50:09 -0800 | [diff] [blame] | 280 | pr_debug("dsmark_dequeue(sch %p,[qdisc %p])\n", sch, p); |
Thomas Graf | af0d114 | 2005-06-18 22:53:29 -0700 | [diff] [blame] | 281 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 282 | skb = p->q->ops->dequeue(p->q); |
Thomas Graf | af0d114 | 2005-06-18 22:53:29 -0700 | [diff] [blame] | 283 | if (skb == NULL) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 284 | return NULL; |
Thomas Graf | af0d114 | 2005-06-18 22:53:29 -0700 | [diff] [blame] | 285 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 286 | sch->q.qlen--; |
Thomas Graf | af0d114 | 2005-06-18 22:53:29 -0700 | [diff] [blame] | 287 | |
| 288 | index = skb->tc_index & (p->indices - 1); |
Stephen Hemminger | 81da99e | 2008-01-21 00:50:09 -0800 | [diff] [blame] | 289 | pr_debug("index %d->%d\n", skb->tc_index, index); |
Thomas Graf | af0d114 | 2005-06-18 22:53:29 -0700 | [diff] [blame] | 290 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 291 | switch (skb->protocol) { |
Arnaldo Carvalho de Melo | 6067804 | 2008-09-20 22:20:49 -0700 | [diff] [blame^] | 292 | case htons(ETH_P_IP): |
Stephen Hemminger | 9d127fb | 2008-01-21 02:24:21 -0800 | [diff] [blame] | 293 | ipv4_change_dsfield(ip_hdr(skb), p->mask[index], |
| 294 | p->value[index]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 295 | break; |
Arnaldo Carvalho de Melo | 6067804 | 2008-09-20 22:20:49 -0700 | [diff] [blame^] | 296 | case htons(ETH_P_IPV6): |
Stephen Hemminger | 9d127fb | 2008-01-21 02:24:21 -0800 | [diff] [blame] | 297 | ipv6_change_dsfield(ipv6_hdr(skb), p->mask[index], |
| 298 | p->value[index]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 299 | break; |
Stephen Hemminger | 9d127fb | 2008-01-21 02:24:21 -0800 | [diff] [blame] | 300 | default: |
| 301 | /* |
| 302 | * Only complain if a change was actually attempted. |
| 303 | * This way, we can send non-IP traffic through dsmark |
| 304 | * and don't need yet another qdisc as a bypass. |
| 305 | */ |
| 306 | if (p->mask[index] != 0xff || p->value[index]) |
| 307 | printk(KERN_WARNING |
| 308 | "dsmark_dequeue: unsupported protocol %d\n", |
| 309 | ntohs(skb->protocol)); |
| 310 | break; |
Stephen Hemminger | 3ff50b7 | 2007-04-20 17:09:22 -0700 | [diff] [blame] | 311 | } |
Thomas Graf | af0d114 | 2005-06-18 22:53:29 -0700 | [diff] [blame] | 312 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 313 | return skb; |
| 314 | } |
| 315 | |
Stephen Hemminger | 9d127fb | 2008-01-21 02:24:21 -0800 | [diff] [blame] | 316 | static int dsmark_requeue(struct sk_buff *skb, struct Qdisc *sch) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 317 | { |
Stephen Hemminger | 81da99e | 2008-01-21 00:50:09 -0800 | [diff] [blame] | 318 | struct dsmark_qdisc_data *p = qdisc_priv(sch); |
Thomas Graf | af0d114 | 2005-06-18 22:53:29 -0700 | [diff] [blame] | 319 | int err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 320 | |
Stephen Hemminger | 81da99e | 2008-01-21 00:50:09 -0800 | [diff] [blame] | 321 | pr_debug("dsmark_requeue(skb %p,sch %p,[qdisc %p])\n", skb, sch, p); |
Thomas Graf | af0d114 | 2005-06-18 22:53:29 -0700 | [diff] [blame] | 322 | |
| 323 | err = p->q->ops->requeue(skb, p->q); |
| 324 | if (err != NET_XMIT_SUCCESS) { |
Jarek Poplawski | 378a2f0 | 2008-08-04 22:31:03 -0700 | [diff] [blame] | 325 | if (net_xmit_drop_count(err)) |
| 326 | sch->qstats.drops++; |
Thomas Graf | af0d114 | 2005-06-18 22:53:29 -0700 | [diff] [blame] | 327 | return err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 328 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 329 | |
Thomas Graf | af0d114 | 2005-06-18 22:53:29 -0700 | [diff] [blame] | 330 | sch->q.qlen++; |
| 331 | sch->qstats.requeues++; |
| 332 | |
| 333 | return NET_XMIT_SUCCESS; |
| 334 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 335 | |
| 336 | static unsigned int dsmark_drop(struct Qdisc *sch) |
| 337 | { |
Stephen Hemminger | 81da99e | 2008-01-21 00:50:09 -0800 | [diff] [blame] | 338 | struct dsmark_qdisc_data *p = qdisc_priv(sch); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 339 | unsigned int len; |
YOSHIFUJI Hideaki | 10297b9 | 2007-02-09 23:25:16 +0900 | [diff] [blame] | 340 | |
Stephen Hemminger | 81da99e | 2008-01-21 00:50:09 -0800 | [diff] [blame] | 341 | pr_debug("dsmark_reset(sch %p,[qdisc %p])\n", sch, p); |
Thomas Graf | af0d114 | 2005-06-18 22:53:29 -0700 | [diff] [blame] | 342 | |
| 343 | if (p->q->ops->drop == NULL) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 344 | return 0; |
Thomas Graf | af0d114 | 2005-06-18 22:53:29 -0700 | [diff] [blame] | 345 | |
| 346 | len = p->q->ops->drop(p->q); |
| 347 | if (len) |
| 348 | sch->q.qlen--; |
| 349 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 350 | return len; |
| 351 | } |
| 352 | |
Patrick McHardy | 1e90474 | 2008-01-22 22:11:17 -0800 | [diff] [blame] | 353 | static int dsmark_init(struct Qdisc *sch, struct nlattr *opt) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 354 | { |
Stephen Hemminger | 81da99e | 2008-01-21 00:50:09 -0800 | [diff] [blame] | 355 | struct dsmark_qdisc_data *p = qdisc_priv(sch); |
Patrick McHardy | 1e90474 | 2008-01-22 22:11:17 -0800 | [diff] [blame] | 356 | struct nlattr *tb[TCA_DSMARK_MAX + 1]; |
Thomas Graf | 758cc43 | 2005-06-18 22:52:54 -0700 | [diff] [blame] | 357 | int err = -EINVAL; |
| 358 | u32 default_index = NO_DEFAULT_INDEX; |
| 359 | u16 indices; |
| 360 | u8 *mask; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 361 | |
Stephen Hemminger | 81da99e | 2008-01-21 00:50:09 -0800 | [diff] [blame] | 362 | pr_debug("dsmark_init(sch %p,[qdisc %p],opt %p)\n", sch, p, opt); |
Thomas Graf | 758cc43 | 2005-06-18 22:52:54 -0700 | [diff] [blame] | 363 | |
Patrick McHardy | cee6372 | 2008-01-23 20:33:32 -0800 | [diff] [blame] | 364 | if (!opt) |
Thomas Graf | 758cc43 | 2005-06-18 22:52:54 -0700 | [diff] [blame] | 365 | goto errout; |
| 366 | |
Patrick McHardy | 27a3421 | 2008-01-23 20:35:39 -0800 | [diff] [blame] | 367 | err = nla_parse_nested(tb, TCA_DSMARK_MAX, opt, dsmark_policy); |
Patrick McHardy | cee6372 | 2008-01-23 20:33:32 -0800 | [diff] [blame] | 368 | if (err < 0) |
| 369 | goto errout; |
| 370 | |
| 371 | err = -EINVAL; |
Patrick McHardy | 1e90474 | 2008-01-22 22:11:17 -0800 | [diff] [blame] | 372 | indices = nla_get_u16(tb[TCA_DSMARK_INDICES]); |
David S. Miller | 5b0ac72 | 2008-01-21 02:21:45 -0800 | [diff] [blame] | 373 | |
| 374 | if (hweight32(indices) != 1) |
Thomas Graf | 758cc43 | 2005-06-18 22:52:54 -0700 | [diff] [blame] | 375 | goto errout; |
| 376 | |
Patrick McHardy | 27a3421 | 2008-01-23 20:35:39 -0800 | [diff] [blame] | 377 | if (tb[TCA_DSMARK_DEFAULT_INDEX]) |
Patrick McHardy | 1e90474 | 2008-01-22 22:11:17 -0800 | [diff] [blame] | 378 | default_index = nla_get_u16(tb[TCA_DSMARK_DEFAULT_INDEX]); |
Thomas Graf | 758cc43 | 2005-06-18 22:52:54 -0700 | [diff] [blame] | 379 | |
| 380 | mask = kmalloc(indices * 2, GFP_KERNEL); |
| 381 | if (mask == NULL) { |
| 382 | err = -ENOMEM; |
| 383 | goto errout; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 384 | } |
Thomas Graf | 758cc43 | 2005-06-18 22:52:54 -0700 | [diff] [blame] | 385 | |
| 386 | p->mask = mask; |
| 387 | memset(p->mask, 0xff, indices); |
| 388 | |
| 389 | p->value = p->mask + indices; |
| 390 | memset(p->value, 0, indices); |
| 391 | |
| 392 | p->indices = indices; |
| 393 | p->default_index = default_index; |
Patrick McHardy | 1e90474 | 2008-01-22 22:11:17 -0800 | [diff] [blame] | 394 | p->set_tc_index = nla_get_flag(tb[TCA_DSMARK_SET_TC_INDEX]); |
Thomas Graf | 758cc43 | 2005-06-18 22:52:54 -0700 | [diff] [blame] | 395 | |
David S. Miller | 5ce2d48 | 2008-07-08 17:06:30 -0700 | [diff] [blame] | 396 | p->q = qdisc_create_dflt(qdisc_dev(sch), sch->dev_queue, |
David S. Miller | bb949fb | 2008-07-08 16:55:56 -0700 | [diff] [blame] | 397 | &pfifo_qdisc_ops, sch->handle); |
Thomas Graf | 758cc43 | 2005-06-18 22:52:54 -0700 | [diff] [blame] | 398 | if (p->q == NULL) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 399 | p->q = &noop_qdisc; |
Thomas Graf | 758cc43 | 2005-06-18 22:52:54 -0700 | [diff] [blame] | 400 | |
Stephen Hemminger | 81da99e | 2008-01-21 00:50:09 -0800 | [diff] [blame] | 401 | pr_debug("dsmark_init: qdisc %p\n", p->q); |
Thomas Graf | 758cc43 | 2005-06-18 22:52:54 -0700 | [diff] [blame] | 402 | |
| 403 | err = 0; |
| 404 | errout: |
Thomas Graf | 758cc43 | 2005-06-18 22:52:54 -0700 | [diff] [blame] | 405 | return err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 406 | } |
| 407 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 408 | static void dsmark_reset(struct Qdisc *sch) |
| 409 | { |
Stephen Hemminger | 81da99e | 2008-01-21 00:50:09 -0800 | [diff] [blame] | 410 | struct dsmark_qdisc_data *p = qdisc_priv(sch); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 411 | |
Stephen Hemminger | 81da99e | 2008-01-21 00:50:09 -0800 | [diff] [blame] | 412 | pr_debug("dsmark_reset(sch %p,[qdisc %p])\n", sch, p); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 413 | qdisc_reset(p->q); |
| 414 | sch->q.qlen = 0; |
| 415 | } |
| 416 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 417 | static void dsmark_destroy(struct Qdisc *sch) |
| 418 | { |
Stephen Hemminger | 81da99e | 2008-01-21 00:50:09 -0800 | [diff] [blame] | 419 | struct dsmark_qdisc_data *p = qdisc_priv(sch); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 420 | |
Stephen Hemminger | 81da99e | 2008-01-21 00:50:09 -0800 | [diff] [blame] | 421 | pr_debug("dsmark_destroy(sch %p,[qdisc %p])\n", sch, p); |
Thomas Graf | af0d114 | 2005-06-18 22:53:29 -0700 | [diff] [blame] | 422 | |
Patrick McHardy | ff31ab5 | 2008-07-01 19:52:38 -0700 | [diff] [blame] | 423 | tcf_destroy_chain(&p->filter_list); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 424 | qdisc_destroy(p->q); |
| 425 | kfree(p->mask); |
| 426 | } |
| 427 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 428 | static int dsmark_dump_class(struct Qdisc *sch, unsigned long cl, |
Thomas Graf | 02f23f0 | 2005-06-18 22:53:12 -0700 | [diff] [blame] | 429 | struct sk_buff *skb, struct tcmsg *tcm) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 430 | { |
Stephen Hemminger | 81da99e | 2008-01-21 00:50:09 -0800 | [diff] [blame] | 431 | struct dsmark_qdisc_data *p = qdisc_priv(sch); |
Patrick McHardy | 1e90474 | 2008-01-22 22:11:17 -0800 | [diff] [blame] | 432 | struct nlattr *opts = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 433 | |
Stephen Hemminger | 81da99e | 2008-01-21 00:50:09 -0800 | [diff] [blame] | 434 | pr_debug("dsmark_dump_class(sch %p,[qdisc %p],class %ld\n", sch, p, cl); |
Thomas Graf | 02f23f0 | 2005-06-18 22:53:12 -0700 | [diff] [blame] | 435 | |
| 436 | if (!dsmark_valid_index(p, cl)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 437 | return -EINVAL; |
Thomas Graf | 02f23f0 | 2005-06-18 22:53:12 -0700 | [diff] [blame] | 438 | |
| 439 | tcm->tcm_handle = TC_H_MAKE(TC_H_MAJ(sch->handle), cl-1); |
Patrick McHardy | cdc7f8e | 2006-03-20 19:01:06 -0800 | [diff] [blame] | 440 | tcm->tcm_info = p->q->handle; |
Thomas Graf | 02f23f0 | 2005-06-18 22:53:12 -0700 | [diff] [blame] | 441 | |
Patrick McHardy | 1e90474 | 2008-01-22 22:11:17 -0800 | [diff] [blame] | 442 | opts = nla_nest_start(skb, TCA_OPTIONS); |
| 443 | if (opts == NULL) |
| 444 | goto nla_put_failure; |
| 445 | NLA_PUT_U8(skb, TCA_DSMARK_MASK, p->mask[cl-1]); |
| 446 | NLA_PUT_U8(skb, TCA_DSMARK_VALUE, p->value[cl-1]); |
Thomas Graf | 02f23f0 | 2005-06-18 22:53:12 -0700 | [diff] [blame] | 447 | |
Patrick McHardy | 1e90474 | 2008-01-22 22:11:17 -0800 | [diff] [blame] | 448 | return nla_nest_end(skb, opts); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 449 | |
Patrick McHardy | 1e90474 | 2008-01-22 22:11:17 -0800 | [diff] [blame] | 450 | nla_put_failure: |
Thomas Graf | bc3ed28 | 2008-06-03 16:36:54 -0700 | [diff] [blame] | 451 | nla_nest_cancel(skb, opts); |
| 452 | return -EMSGSIZE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 453 | } |
| 454 | |
| 455 | static int dsmark_dump(struct Qdisc *sch, struct sk_buff *skb) |
| 456 | { |
Stephen Hemminger | 81da99e | 2008-01-21 00:50:09 -0800 | [diff] [blame] | 457 | struct dsmark_qdisc_data *p = qdisc_priv(sch); |
Patrick McHardy | 1e90474 | 2008-01-22 22:11:17 -0800 | [diff] [blame] | 458 | struct nlattr *opts = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 459 | |
Patrick McHardy | 1e90474 | 2008-01-22 22:11:17 -0800 | [diff] [blame] | 460 | opts = nla_nest_start(skb, TCA_OPTIONS); |
| 461 | if (opts == NULL) |
| 462 | goto nla_put_failure; |
| 463 | NLA_PUT_U16(skb, TCA_DSMARK_INDICES, p->indices); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 464 | |
Thomas Graf | 02f23f0 | 2005-06-18 22:53:12 -0700 | [diff] [blame] | 465 | if (p->default_index != NO_DEFAULT_INDEX) |
Patrick McHardy | 1e90474 | 2008-01-22 22:11:17 -0800 | [diff] [blame] | 466 | NLA_PUT_U16(skb, TCA_DSMARK_DEFAULT_INDEX, p->default_index); |
Thomas Graf | 02f23f0 | 2005-06-18 22:53:12 -0700 | [diff] [blame] | 467 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 468 | if (p->set_tc_index) |
Patrick McHardy | 1e90474 | 2008-01-22 22:11:17 -0800 | [diff] [blame] | 469 | NLA_PUT_FLAG(skb, TCA_DSMARK_SET_TC_INDEX); |
Thomas Graf | 02f23f0 | 2005-06-18 22:53:12 -0700 | [diff] [blame] | 470 | |
Patrick McHardy | 1e90474 | 2008-01-22 22:11:17 -0800 | [diff] [blame] | 471 | return nla_nest_end(skb, opts); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 472 | |
Patrick McHardy | 1e90474 | 2008-01-22 22:11:17 -0800 | [diff] [blame] | 473 | nla_put_failure: |
Thomas Graf | bc3ed28 | 2008-06-03 16:36:54 -0700 | [diff] [blame] | 474 | nla_nest_cancel(skb, opts); |
| 475 | return -EMSGSIZE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 476 | } |
| 477 | |
Eric Dumazet | 20fea08 | 2007-11-14 01:44:41 -0800 | [diff] [blame] | 478 | static const struct Qdisc_class_ops dsmark_class_ops = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 479 | .graft = dsmark_graft, |
| 480 | .leaf = dsmark_leaf, |
| 481 | .get = dsmark_get, |
| 482 | .put = dsmark_put, |
| 483 | .change = dsmark_change, |
| 484 | .delete = dsmark_delete, |
| 485 | .walk = dsmark_walk, |
| 486 | .tcf_chain = dsmark_find_tcf, |
| 487 | .bind_tcf = dsmark_bind_filter, |
| 488 | .unbind_tcf = dsmark_put, |
| 489 | .dump = dsmark_dump_class, |
| 490 | }; |
| 491 | |
Eric Dumazet | 20fea08 | 2007-11-14 01:44:41 -0800 | [diff] [blame] | 492 | static struct Qdisc_ops dsmark_qdisc_ops __read_mostly = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 493 | .next = NULL, |
| 494 | .cl_ops = &dsmark_class_ops, |
| 495 | .id = "dsmark", |
| 496 | .priv_size = sizeof(struct dsmark_qdisc_data), |
| 497 | .enqueue = dsmark_enqueue, |
| 498 | .dequeue = dsmark_dequeue, |
| 499 | .requeue = dsmark_requeue, |
| 500 | .drop = dsmark_drop, |
| 501 | .init = dsmark_init, |
| 502 | .reset = dsmark_reset, |
| 503 | .destroy = dsmark_destroy, |
| 504 | .change = NULL, |
| 505 | .dump = dsmark_dump, |
| 506 | .owner = THIS_MODULE, |
| 507 | }; |
| 508 | |
| 509 | static int __init dsmark_module_init(void) |
| 510 | { |
| 511 | return register_qdisc(&dsmark_qdisc_ops); |
| 512 | } |
Thomas Graf | af0d114 | 2005-06-18 22:53:29 -0700 | [diff] [blame] | 513 | |
YOSHIFUJI Hideaki | 10297b9 | 2007-02-09 23:25:16 +0900 | [diff] [blame] | 514 | static void __exit dsmark_module_exit(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 515 | { |
| 516 | unregister_qdisc(&dsmark_qdisc_ops); |
| 517 | } |
Thomas Graf | af0d114 | 2005-06-18 22:53:29 -0700 | [diff] [blame] | 518 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 519 | module_init(dsmark_module_init) |
| 520 | module_exit(dsmark_module_exit) |
Thomas Graf | af0d114 | 2005-06-18 22:53:29 -0700 | [diff] [blame] | 521 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 522 | MODULE_LICENSE("GPL"); |