X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=net%2Fsched%2Fcls_fw.c;h=c797d6ada7de06948ef1fab1e225a224ffdc057d;hb=97bf2856c6014879bd04983a3e9dfcdac1e7fe85;hp=5b614b63aa6634c8cfc562aa2d74637fa4b170f9;hpb=5273a3df6485dc2ad6aa7ddd441b9a21970f003b;p=linux-2.6.git diff --git a/net/sched/cls_fw.c b/net/sched/cls_fw.c index 5b614b63a..c797d6ada 100644 --- a/net/sched/cls_fw.c +++ b/net/sched/cls_fw.c @@ -11,13 +11,17 @@ * Changes: * Karlis Peisenieks : 990415 : fw_walk off by one * Karlis Peisenieks : 990415 : fw_delete killed all the filter (and kernel). + * Alex : 2004xxyy: Added Action extension + * + * JHS: We should remove the CONFIG_NET_CLS_IND from here + * eventually when the meta match extension is made available + * */ -#include #include #include #include -#include +#include #include #include #include @@ -38,11 +42,15 @@ #include #include #include -#include +#include +#include + +#define HTSIZE (PAGE_SIZE/sizeof(struct fw_filter *)) struct fw_head { - struct fw_filter *ht[256]; + struct fw_filter *ht[HTSIZE]; + u32 mask; }; struct fw_filter @@ -50,14 +58,41 @@ struct fw_filter struct fw_filter *next; u32 id; struct tcf_result res; -#ifdef CONFIG_NET_CLS_POLICE - struct tcf_police *police; -#endif +#ifdef CONFIG_NET_CLS_IND + char indev[IFNAMSIZ]; +#endif /* CONFIG_NET_CLS_IND */ + struct tcf_exts exts; +}; + +static struct tcf_ext_map fw_ext_map = { + .action = TCA_FW_ACT, + .police = TCA_FW_POLICE }; static __inline__ int fw_hash(u32 handle) { - return handle&0xFF; + if (HTSIZE == 4096) + return ((handle >> 24) & 0xFFF) ^ + ((handle >> 12) & 0xFFF) ^ + (handle & 0xFFF); + else if (HTSIZE == 2048) + return ((handle >> 22) & 0x7FF) ^ + ((handle >> 11) & 0x7FF) ^ + (handle & 0x7FF); + else if (HTSIZE == 1024) + return ((handle >> 20) & 0x3FF) ^ + ((handle >> 10) & 0x3FF) ^ + (handle & 0x3FF); + else if (HTSIZE == 512) + return (handle >> 27) ^ + ((handle >> 18) & 0x1FF) ^ + ((handle >> 9) & 0x1FF) ^ + (handle & 0x1FF); + else if (HTSIZE == 256) { + u8 *t = (u8 *) &handle; + return t[0] ^ t[1] ^ t[2] ^ t[3]; + } else + return handle & (HTSIZE - 1); } static int fw_classify(struct sk_buff *skb, struct tcf_proto *tp, @@ -65,34 +100,34 @@ static int fw_classify(struct sk_buff *skb, struct tcf_proto *tp, { struct fw_head *head = (struct fw_head*)tp->root; struct fw_filter *f; -#ifdef CONFIG_NETFILTER - u32 id = skb->nfmark; -#else - u32 id = 0; -#endif - - if (head == NULL) - goto old_method; - - for (f=head->ht[fw_hash(id)]; f; f=f->next) { - if (f->id == id) { - *res = f->res; -#ifdef CONFIG_NET_CLS_POLICE - if (f->police) - return tcf_police(skb, f->police); -#endif + int r; + u32 id = skb->mark; + + if (head != NULL) { + id &= head->mask; + for (f=head->ht[fw_hash(id)]; f; f=f->next) { + if (f->id == id) { + *res = f->res; +#ifdef CONFIG_NET_CLS_IND + if (!tcf_match_indev(skb, f->indev)) + continue; +#endif /* CONFIG_NET_CLS_IND */ + r = tcf_exts_exec(skb, &f->exts, res); + if (r < 0) + continue; + + return r; + } + } + } else { + /* old method */ + if (id && (TC_H_MAJ(id) == 0 || !(TC_H_MAJ(id^tp->q->handle)))) { + res->classid = id; + res->class = 0; return 0; } } - return -1; -old_method: - if (id && (TC_H_MAJ(id) == 0 || - !(TC_H_MAJ(id^tp->q->handle)))) { - res->classid = id; - res->class = 0; - return 0; - } return -1; } @@ -120,6 +155,14 @@ static int fw_init(struct tcf_proto *tp) return 0; } +static inline void +fw_delete_filter(struct tcf_proto *tp, struct fw_filter *f) +{ + tcf_unbind_filter(tp, &f->res); + tcf_exts_destroy(tp, &f->exts); + kfree(f); +} + static void fw_destroy(struct tcf_proto *tp) { struct fw_head *head = (struct fw_head*)xchg(&tp->root, NULL); @@ -129,17 +172,10 @@ static void fw_destroy(struct tcf_proto *tp) if (head == NULL) return; - for (h=0; h<256; h++) { + for (h=0; hht[h]) != NULL) { - unsigned long cl; head->ht[h] = f->next; - - if ((cl = __cls_set_class(&f->res.class, 0)) != 0) - tp->q->ops->cl_ops->unbind_tcf(tp->q, cl); -#ifdef CONFIG_NET_CLS_POLICE - tcf_police_release(f->police); -#endif - kfree(f); + fw_delete_filter(tp, f); } } kfree(head); @@ -156,18 +192,10 @@ static int fw_delete(struct tcf_proto *tp, unsigned long arg) for (fp=&head->ht[fw_hash(f->id)]; *fp; fp = &(*fp)->next) { if (*fp == f) { - unsigned long cl; - tcf_tree_lock(tp); *fp = f->next; tcf_tree_unlock(tp); - - if ((cl = cls_set_class(tp, &f->res.class, 0)) != 0) - tp->q->ops->cl_ops->unbind_tcf(tp->q, cl); -#ifdef CONFIG_NET_CLS_POLICE - tcf_police_release(f->police); -#endif - kfree(f); + fw_delete_filter(tp, f); return 0; } } @@ -175,13 +203,59 @@ out: return -EINVAL; } +static int +fw_change_attrs(struct tcf_proto *tp, struct fw_filter *f, + struct rtattr **tb, struct rtattr **tca, unsigned long base) +{ + struct fw_head *head = (struct fw_head *)tp->root; + struct tcf_exts e; + u32 mask; + int err; + + err = tcf_exts_validate(tp, tb, tca[TCA_RATE-1], &e, &fw_ext_map); + if (err < 0) + return err; + + err = -EINVAL; + if (tb[TCA_FW_CLASSID-1]) { + if (RTA_PAYLOAD(tb[TCA_FW_CLASSID-1]) != sizeof(u32)) + goto errout; + f->res.classid = *(u32*)RTA_DATA(tb[TCA_FW_CLASSID-1]); + tcf_bind_filter(tp, &f->res, base); + } + +#ifdef CONFIG_NET_CLS_IND + if (tb[TCA_FW_INDEV-1]) { + err = tcf_change_indev(tp, f->indev, tb[TCA_FW_INDEV-1]); + if (err < 0) + goto errout; + } +#endif /* CONFIG_NET_CLS_IND */ + + if (tb[TCA_FW_MASK-1]) { + if (RTA_PAYLOAD(tb[TCA_FW_MASK-1]) != sizeof(u32)) + goto errout; + mask = *(u32*)RTA_DATA(tb[TCA_FW_MASK-1]); + if (mask != head->mask) + goto errout; + } else if (head->mask != 0xFFFFFFFF) + goto errout; + + tcf_exts_change(tp, &f->exts, &e); + + return 0; +errout: + tcf_exts_destroy(tp, &e); + return err; +} + static int fw_change(struct tcf_proto *tp, unsigned long base, u32 handle, struct rtattr **tca, unsigned long *arg) { struct fw_head *head = (struct fw_head*)tp->root; - struct fw_filter *f; + struct fw_filter *f = (struct fw_filter *) *arg; struct rtattr *opt = tca[TCA_OPTIONS-1]; struct rtattr *tb[TCA_FW_MAX]; int err; @@ -189,70 +263,45 @@ static int fw_change(struct tcf_proto *tp, unsigned long base, if (!opt) return handle ? -EINVAL : 0; - if (rtattr_parse(tb, TCA_FW_MAX, RTA_DATA(opt), RTA_PAYLOAD(opt)) < 0) + if (rtattr_parse_nested(tb, TCA_FW_MAX, opt) < 0) return -EINVAL; - if ((f = (struct fw_filter*)*arg) != NULL) { - /* Node exists: adjust only classid */ - + if (f != NULL) { if (f->id != handle && handle) return -EINVAL; - if (tb[TCA_FW_CLASSID-1]) { - unsigned long cl; - - f->res.classid = *(u32*)RTA_DATA(tb[TCA_FW_CLASSID-1]); - cl = tp->q->ops->cl_ops->bind_tcf(tp->q, base, f->res.classid); - cl = cls_set_class(tp, &f->res.class, cl); - if (cl) - tp->q->ops->cl_ops->unbind_tcf(tp->q, cl); - } -#ifdef CONFIG_NET_CLS_POLICE - if (tb[TCA_FW_POLICE-1]) { - struct tcf_police *police = tcf_police_locate(tb[TCA_FW_POLICE-1], tca[TCA_RATE-1]); - - tcf_tree_lock(tp); - police = xchg(&f->police, police); - tcf_tree_unlock(tp); - - tcf_police_release(police); - } -#endif - return 0; + return fw_change_attrs(tp, f, tb, tca, base); } if (!handle) return -EINVAL; if (head == NULL) { - head = kmalloc(sizeof(struct fw_head), GFP_KERNEL); + u32 mask = 0xFFFFFFFF; + if (tb[TCA_FW_MASK-1]) { + if (RTA_PAYLOAD(tb[TCA_FW_MASK-1]) != sizeof(u32)) + return -EINVAL; + mask = *(u32*)RTA_DATA(tb[TCA_FW_MASK-1]); + } + + head = kzalloc(sizeof(struct fw_head), GFP_KERNEL); if (head == NULL) return -ENOBUFS; - memset(head, 0, sizeof(*head)); + head->mask = mask; tcf_tree_lock(tp); tp->root = head; tcf_tree_unlock(tp); } - f = kmalloc(sizeof(struct fw_filter), GFP_KERNEL); + f = kzalloc(sizeof(struct fw_filter), GFP_KERNEL); if (f == NULL) return -ENOBUFS; - memset(f, 0, sizeof(*f)); f->id = handle; - if (tb[TCA_FW_CLASSID-1]) { - err = -EINVAL; - if (RTA_PAYLOAD(tb[TCA_FW_CLASSID-1]) != 4) - goto errout; - f->res.classid = *(u32*)RTA_DATA(tb[TCA_FW_CLASSID-1]); - cls_set_class(tp, &f->res.class, tp->q->ops->cl_ops->bind_tcf(tp->q, base, f->res.classid)); - } - -#ifdef CONFIG_NET_CLS_POLICE - if (tb[TCA_FW_POLICE-1]) - f->police = tcf_police_locate(tb[TCA_FW_POLICE-1], tca[TCA_RATE-1]); -#endif + err = fw_change_attrs(tp, f, tb, tca, base); + if (err < 0) + goto errout; f->next = head->ht[fw_hash(handle)]; tcf_tree_lock(tp); @@ -263,8 +312,7 @@ static int fw_change(struct tcf_proto *tp, unsigned long base, return 0; errout: - if (f) - kfree(f); + kfree(f); return err; } @@ -279,7 +327,7 @@ static void fw_walk(struct tcf_proto *tp, struct tcf_walker *arg) if (arg->stop) return; - for (h = 0; h < 256; h++) { + for (h = 0; h < HTSIZE; h++) { struct fw_filter *f; for (f = head->ht[h]; f; f = f->next) { @@ -289,7 +337,7 @@ static void fw_walk(struct tcf_proto *tp, struct tcf_walker *arg) } if (arg->fn(tp, (unsigned long)f, arg) < 0) { arg->stop = 1; - break; + return; } arg->count++; } @@ -299,6 +347,7 @@ static void fw_walk(struct tcf_proto *tp, struct tcf_walker *arg) static int fw_dump(struct tcf_proto *tp, unsigned long fh, struct sk_buff *skb, struct tcmsg *t) { + struct fw_head *head = (struct fw_head *)tp->root; struct fw_filter *f = (struct fw_filter*)fh; unsigned char *b = skb->tail; struct rtattr *rta; @@ -308,11 +357,7 @@ static int fw_dump(struct tcf_proto *tp, unsigned long fh, t->tcm_handle = f->id; - if (!f->res.classid -#ifdef CONFIG_NET_CLS_POLICE - && !f->police -#endif - ) + if (!f->res.classid && !tcf_exts_is_available(&f->exts)) return skb->len; rta = (struct rtattr*)b; @@ -320,26 +365,21 @@ static int fw_dump(struct tcf_proto *tp, unsigned long fh, if (f->res.classid) RTA_PUT(skb, TCA_FW_CLASSID, 4, &f->res.classid); -#ifdef CONFIG_NET_CLS_POLICE - if (f->police) { - struct rtattr * p_rta = (struct rtattr*)skb->tail; +#ifdef CONFIG_NET_CLS_IND + if (strlen(f->indev)) + RTA_PUT(skb, TCA_FW_INDEV, IFNAMSIZ, f->indev); +#endif /* CONFIG_NET_CLS_IND */ + if (head->mask != 0xFFFFFFFF) + RTA_PUT(skb, TCA_FW_MASK, 4, &head->mask); - RTA_PUT(skb, TCA_FW_POLICE, 0, NULL); + if (tcf_exts_dump(skb, &f->exts, &fw_ext_map) < 0) + goto rtattr_failure; - if (tcf_police_dump(skb, f->police) < 0) - goto rtattr_failure; + rta->rta_len = skb->tail - b; - p_rta->rta_len = skb->tail - (u8*)p_rta; - } -#endif + if (tcf_exts_dump_stats(skb, &f->exts, &fw_ext_map) < 0) + goto rtattr_failure; - rta->rta_len = skb->tail - b; -#ifdef CONFIG_NET_CLS_POLICE - if (f->police) { - if (qdisc_copy_stats(skb, &f->police->stats)) - goto rtattr_failure; - } -#endif return skb->len; rtattr_failure: