From fd0ec0e6216baea854465bbdb177f2d1b2ccaf22 Mon Sep 17 00:00:00 2001 From: Jan Engelhardt Date: Fri, 10 Jul 2009 19:27:47 +0200 Subject: [PATCH] netfilter: xtables: consolidate code into xt_request_find_match Signed-off-by: Jan Engelhardt --- include/linux/netfilter/x_tables.h | 2 ++ net/bridge/netfilter/ebtables.c | 5 +---- net/ipv4/netfilter/ip_tables.c | 18 ++++++++---------- net/ipv6/netfilter/ip6_tables.c | 18 ++++++++---------- net/netfilter/x_tables.c | 11 +++++++++++ 5 files changed, 30 insertions(+), 24 deletions(-) diff --git a/include/linux/netfilter/x_tables.h b/include/linux/netfilter/x_tables.h index f8f555153373..dd9d15a73a96 100644 --- a/include/linux/netfilter/x_tables.h +++ b/include/linux/netfilter/x_tables.h @@ -436,6 +436,8 @@ extern struct xt_table_info *xt_replace_table(struct xt_table *table, extern struct xt_match *xt_find_match(u8 af, const char *name, u8 revision); extern struct xt_target *xt_find_target(u8 af, const char *name, u8 revision); +extern struct xt_match *xt_request_find_match(u8 af, const char *name, + u8 revision); extern struct xt_target *xt_request_find_target(u8 af, const char *name, u8 revision); extern int xt_find_revision(u8 af, const char *name, u8 revision, diff --git a/net/bridge/netfilter/ebtables.c b/net/bridge/netfilter/ebtables.c index 6d3b256d2f61..c41f3fad0587 100644 --- a/net/bridge/netfilter/ebtables.c +++ b/net/bridge/netfilter/ebtables.c @@ -361,12 +361,9 @@ ebt_check_match(struct ebt_entry_match *m, struct xt_mtchk_param *par, left - sizeof(struct ebt_entry_match) < m->match_size) return -EINVAL; - match = try_then_request_module(xt_find_match(NFPROTO_BRIDGE, - m->u.name, 0), "ebt_%s", m->u.name); + match = xt_request_find_match(NFPROTO_BRIDGE, m->u.name, 0); if (IS_ERR(match)) return PTR_ERR(match); - if (match == NULL) - return -ENOENT; m->u.match = match; par->match = match; diff --git a/net/ipv4/netfilter/ip_tables.c b/net/ipv4/netfilter/ip_tables.c index e24ec48ee8cd..09f6567a85b7 100644 --- a/net/ipv4/netfilter/ip_tables.c +++ b/net/ipv4/netfilter/ip_tables.c @@ -629,12 +629,11 @@ find_check_match(struct ipt_entry_match *m, struct xt_mtchk_param *par) struct xt_match *match; int ret; - match = try_then_request_module(xt_find_match(AF_INET, m->u.user.name, - m->u.user.revision), - "ipt_%s", m->u.user.name); - if (IS_ERR(match) || !match) { + match = xt_request_find_match(NFPROTO_IPV4, m->u.user.name, + m->u.user.revision); + if (IS_ERR(match)) { duprintf("find_check_match: `%s' not found\n", m->u.user.name); - return match ? PTR_ERR(match) : -ENOENT; + return PTR_ERR(match); } m->u.kernel.match = match; @@ -1472,13 +1471,12 @@ compat_find_calc_match(struct ipt_entry_match *m, { struct xt_match *match; - match = try_then_request_module(xt_find_match(AF_INET, m->u.user.name, - m->u.user.revision), - "ipt_%s", m->u.user.name); - if (IS_ERR(match) || !match) { + match = xt_request_find_match(NFPROTO_IPV4, m->u.user.name, + m->u.user.revision); + if (IS_ERR(match)) { duprintf("compat_check_calc_match: `%s' not found\n", m->u.user.name); - return match ? PTR_ERR(match) : -ENOENT; + return PTR_ERR(match); } m->u.kernel.match = match; *size += xt_compat_match_offset(match); diff --git a/net/ipv6/netfilter/ip6_tables.c b/net/ipv6/netfilter/ip6_tables.c index 842bef374dcc..41e2429c0163 100644 --- a/net/ipv6/netfilter/ip6_tables.c +++ b/net/ipv6/netfilter/ip6_tables.c @@ -660,12 +660,11 @@ find_check_match(struct ip6t_entry_match *m, struct xt_mtchk_param *par) struct xt_match *match; int ret; - match = try_then_request_module(xt_find_match(AF_INET6, m->u.user.name, - m->u.user.revision), - "ip6t_%s", m->u.user.name); - if (IS_ERR(match) || !match) { + match = xt_request_find_match(NFPROTO_IPV6, m->u.user.name, + m->u.user.revision); + if (IS_ERR(match)) { duprintf("find_check_match: `%s' not found\n", m->u.user.name); - return match ? PTR_ERR(match) : -ENOENT; + return PTR_ERR(match); } m->u.kernel.match = match; @@ -1506,13 +1505,12 @@ compat_find_calc_match(struct ip6t_entry_match *m, { struct xt_match *match; - match = try_then_request_module(xt_find_match(AF_INET6, m->u.user.name, - m->u.user.revision), - "ip6t_%s", m->u.user.name); - if (IS_ERR(match) || !match) { + match = xt_request_find_match(NFPROTO_IPV6, m->u.user.name, + m->u.user.revision); + if (IS_ERR(match)) { duprintf("compat_check_calc_match: `%s' not found\n", m->u.user.name); - return match ? PTR_ERR(match) : -ENOENT; + return PTR_ERR(match); } m->u.kernel.match = match; *size += xt_compat_match_offset(match); diff --git a/net/netfilter/x_tables.c b/net/netfilter/x_tables.c index bf2806afd920..ee7fe215b3e1 100644 --- a/net/netfilter/x_tables.c +++ b/net/netfilter/x_tables.c @@ -214,6 +214,17 @@ struct xt_match *xt_find_match(u8 af, const char *name, u8 revision) } EXPORT_SYMBOL(xt_find_match); +struct xt_match * +xt_request_find_match(uint8_t nfproto, const char *name, uint8_t revision) +{ + struct xt_match *match; + + match = try_then_request_module(xt_find_match(nfproto, name, revision), + "%st_%s", xt_prefix[nfproto], name); + return (match != NULL) ? match : ERR_PTR(-ENOENT); +} +EXPORT_SYMBOL_GPL(xt_request_find_match); + /* Find target, grabs ref. Returns ERR_PTR() on error. */ struct xt_target *xt_find_target(u8 af, const char *name, u8 revision) { -- 2.30.2