diff options
author | Jakub Kicinski <kuba@kernel.org> | 2024-02-28 01:30:20 +0300 |
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committer | Jakub Kicinski <kuba@kernel.org> | 2024-02-29 02:25:42 +0300 |
commit | 66fcdad0884223eb9dfa9b76161dca7917e6e03b (patch) | |
tree | 07119d79f3b9cc6cce853dba8f8052d38bbc2105 /tools/net/ynl | |
parent | 5600c580383acb655f0fd8d4963cbea52f056938 (diff) | |
download | linux-66fcdad0884223eb9dfa9b76161dca7917e6e03b.tar.xz |
tools: ynl: create local for_each helpers
Create ynl_attr_for_each*() iteration helpers.
Use them instead of the mnl ones.
Acked-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Link: https://lore.kernel.org/r/20240227223032.1835527-4-kuba@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'tools/net/ynl')
-rw-r--r-- | tools/net/ynl/lib/ynl-priv.h | 47 | ||||
-rw-r--r-- | tools/net/ynl/lib/ynl.c | 12 | ||||
-rwxr-xr-x | tools/net/ynl/ynl-gen-c.py | 8 |
3 files changed, 57 insertions, 10 deletions
diff --git a/tools/net/ynl/lib/ynl-priv.h b/tools/net/ynl/lib/ynl-priv.h index d42d44a77dcb..a339732450c3 100644 --- a/tools/net/ynl/lib/ynl-priv.h +++ b/tools/net/ynl/lib/ynl-priv.h @@ -147,6 +147,53 @@ static inline void *ynl_attr_data(const struct nlattr *attr) return (unsigned char *)attr + NLA_HDRLEN; } +static inline void *ynl_attr_data_end(const struct nlattr *attr) +{ + return ynl_attr_data(attr) + ynl_attr_data_len(attr); +} + +#define ynl_attr_for_each(attr, nlh, fixed_hdr_sz) \ + for ((attr) = ynl_attr_first(nlh, (nlh)->nlmsg_len, \ + NLMSG_HDRLEN + fixed_hdr_sz); attr; \ + (attr) = ynl_attr_next(ynl_nlmsg_end_addr(nlh), attr)) + +#define ynl_attr_for_each_nested(attr, outer) \ + for ((attr) = ynl_attr_first(outer, outer->nla_len, \ + sizeof(struct nlattr)); attr; \ + (attr) = ynl_attr_next(ynl_attr_data_end(outer), attr)) + +#define ynl_attr_for_each_payload(start, len, attr) \ + for ((attr) = ynl_attr_first(start, len, 0); attr; \ + (attr) = ynl_attr_next(start + len, attr)) + +static inline struct nlattr * +ynl_attr_if_good(const void *end, struct nlattr *attr) +{ + if (attr + 1 > (const struct nlattr *)end) + return NULL; + if (ynl_attr_data_end(attr) > end) + return NULL; + return attr; +} + +static inline struct nlattr * +ynl_attr_next(const void *end, const struct nlattr *prev) +{ + struct nlattr *attr; + + attr = (void *)((char *)prev + NLA_ALIGN(prev->nla_len)); + return ynl_attr_if_good(end, attr); +} + +static inline struct nlattr * +ynl_attr_first(const void *start, size_t len, size_t skip) +{ + struct nlattr *attr; + + attr = (void *)((char *)start + NLMSG_ALIGN(skip)); + return ynl_attr_if_good(start + len, attr); +} + static inline struct nlattr * ynl_attr_nest_start(struct nlmsghdr *nlh, unsigned int attr_type) { diff --git a/tools/net/ynl/lib/ynl.c b/tools/net/ynl/lib/ynl.c index b9ed587af676..0f71e69b70c0 100644 --- a/tools/net/ynl/lib/ynl.c +++ b/tools/net/ynl/lib/ynl.c @@ -92,7 +92,7 @@ ynl_err_walk(struct ynl_sock *ys, void *start, void *end, unsigned int off, data_len = end - start; - mnl_attr_for_each_payload(start, data_len) { + ynl_attr_for_each_payload(start, data_len, attr) { astart_off = (char *)attr - (char *)start; aend_off = astart_off + ynl_attr_data_len(attr); if (aend_off <= off) @@ -150,7 +150,7 @@ ynl_ext_ack_check(struct ynl_sock *ys, const struct nlmsghdr *nlh, return MNL_CB_OK; } - mnl_attr_for_each(attr, nlh, hlen) { + ynl_attr_for_each(attr, nlh, hlen) { unsigned int len, type; len = ynl_attr_data_len(attr); @@ -500,7 +500,7 @@ ynl_get_family_info_mcast(struct ynl_sock *ys, const struct nlattr *mcasts) const struct nlattr *entry, *attr; unsigned int i; - mnl_attr_for_each_nested(attr, mcasts) + ynl_attr_for_each_nested(attr, mcasts) ys->n_mcast_groups++; if (!ys->n_mcast_groups) @@ -512,8 +512,8 @@ ynl_get_family_info_mcast(struct ynl_sock *ys, const struct nlattr *mcasts) return MNL_CB_ERROR; i = 0; - mnl_attr_for_each_nested(entry, mcasts) { - mnl_attr_for_each_nested(attr, entry) { + ynl_attr_for_each_nested(entry, mcasts) { + ynl_attr_for_each_nested(attr, entry) { if (ynl_attr_type(attr) == CTRL_ATTR_MCAST_GRP_ID) ys->mcast_groups[i].id = ynl_attr_get_u32(attr); if (ynl_attr_type(attr) == CTRL_ATTR_MCAST_GRP_NAME) { @@ -535,7 +535,7 @@ static int ynl_get_family_info_cb(const struct nlmsghdr *nlh, void *data) const struct nlattr *attr; bool found_id = true; - mnl_attr_for_each(attr, nlh, sizeof(struct genlmsghdr)) { + ynl_attr_for_each(attr, nlh, sizeof(struct genlmsghdr)) { if (ynl_attr_type(attr) == CTRL_ATTR_MCAST_GROUPS) if (ynl_get_family_info_mcast(ys, attr)) return MNL_CB_ERROR; diff --git a/tools/net/ynl/ynl-gen-c.py b/tools/net/ynl/ynl-gen-c.py index 99a3eb7b158b..eabce06f03d9 100755 --- a/tools/net/ynl/ynl-gen-c.py +++ b/tools/net/ynl/ynl-gen-c.py @@ -650,7 +650,7 @@ class TypeArrayNest(Type): def _attr_get(self, ri, var): local_vars = ['const struct nlattr *attr2;'] get_lines = [f'attr_{self.c_name} = attr;', - 'mnl_attr_for_each_nested(attr2, attr)', + 'ynl_attr_for_each_nested(attr2, attr)', f'\t{var}->n_{self.c_name}++;'] return get_lines, None, local_vars @@ -1612,11 +1612,11 @@ def put_req_nested(ri, struct): def _multi_parse(ri, struct, init_lines, local_vars): if struct.nested: - iter_line = "mnl_attr_for_each_nested(attr, nested)" + iter_line = "ynl_attr_for_each_nested(attr, nested)" else: if ri.fixed_hdr: local_vars += ['void *hdr;'] - iter_line = "mnl_attr_for_each(attr, nlh, yarg->ys->family->hdr_len)" + iter_line = "ynl_attr_for_each(attr, nlh, yarg->ys->family->hdr_len)" array_nests = set() multi_attrs = set() @@ -1679,7 +1679,7 @@ def _multi_parse(ri, struct, init_lines, local_vars): ri.cw.p(f"dst->n_{aspec.c_name} = n_{aspec.c_name};") ri.cw.p('i = 0;') ri.cw.p(f"parg.rsp_policy = &{aspec.nested_render_name}_nest;") - ri.cw.block_start(line=f"mnl_attr_for_each_nested(attr, attr_{aspec.c_name})") + ri.cw.block_start(line=f"ynl_attr_for_each_nested(attr, attr_{aspec.c_name})") ri.cw.p(f"parg.data = &dst->{aspec.c_name}[i];") ri.cw.p(f"if ({aspec.nested_render_name}_parse(&parg, attr, ynl_attr_type(attr)))") ri.cw.p('return MNL_CB_ERROR;') |