diff options
author | Manoj Basapathi <manojbm@codeaurora.org> | 2020-04-16 10:23:29 +0530 |
---|---|---|
committer | Pablo Neira Ayuso <pablo@netfilter.org> | 2020-04-16 20:05:14 +0200 |
commit | 85b9ec86154281400e22a233e1247a17764dde3e (patch) | |
tree | bbd1f049215195e6b9fc7a878e4090ac6d486695 /extensions/libxt_IDLETIMER.c | |
parent | 18f01acbdefb211ebfefb728d2b6843c59ae06db (diff) |
extensions: IDLETIMER: Add alarm timer option
Introduce "--alarm" option for idletimer rule.
If it is present, hardidle-timer is used, else default timer.
The default idletimer starts a deferrable timer or in other
words the timer will cease to run when cpu is in suspended
state. This change introduces the option to start a
non-deferrable or alarm timer which will continue to run even
when the cpu is in suspended state.
Signed-off-by: Manoj Basapathi <manojbm@codeaurora.org>
Signed-off-by: Sauvik Saha <ssaha@codeaurora.org>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Diffstat (limited to 'extensions/libxt_IDLETIMER.c')
-rw-r--r-- | extensions/libxt_IDLETIMER.c | 99 |
1 files changed, 86 insertions, 13 deletions
diff --git a/extensions/libxt_IDLETIMER.c b/extensions/libxt_IDLETIMER.c index 21004a4b..68b223f4 100644 --- a/extensions/libxt_IDLETIMER.c +++ b/extensions/libxt_IDLETIMER.c @@ -27,6 +27,7 @@ enum { O_TIMEOUT = 0, O_LABEL, + O_ALARM, }; #define s struct idletimer_tg_info @@ -39,6 +40,17 @@ static const struct xt_option_entry idletimer_tg_opts[] = { }; #undef s +#define s struct idletimer_tg_info_v1 +static const struct xt_option_entry idletimer_tg_opts_v1[] = { + {.name = "timeout", .id = O_TIMEOUT, .type = XTTYPE_UINT32, + .flags = XTOPT_MAND | XTOPT_PUT, XTOPT_POINTER(s, timeout)}, + {.name = "label", .id = O_LABEL, .type = XTTYPE_STRING, + .flags = XTOPT_MAND | XTOPT_PUT, XTOPT_POINTER(s, label)}, + {.name = "alarm", .id = O_ALARM, .type = XTTYPE_NONE}, + XTOPT_TABLEEND, +}; +#undef s + static void idletimer_tg_help(void) { printf( @@ -48,6 +60,16 @@ static void idletimer_tg_help(void) "\n"); } +static void idletimer_tg_help_v1(void) +{ + printf( +"IDLETIMER target options:\n" +" --timeout time Timeout until the notification is sent (in seconds)\n" +" --label string Unique rule identifier\n" +" --alarm none Use alarm instead of default timer\n" +"\n"); +} + static void idletimer_tg_print(const void *ip, const struct xt_entry_target *target, int numeric) @@ -59,6 +81,20 @@ static void idletimer_tg_print(const void *ip, printf(" label:%s", info->label); } +static void idletimer_tg_print_v1(const void *ip, + const struct xt_entry_target *target, + int numeric) +{ + struct idletimer_tg_info_v1 *info = + (struct idletimer_tg_info_v1 *) target->data; + + printf(" timeout:%u", info->timeout); + printf(" label:%s", info->label); + if (info->timer_type == XT_IDLETIMER_ALARM) + printf(" alarm"); +} + + static void idletimer_tg_save(const void *ip, const struct xt_entry_target *target) { @@ -69,21 +105,58 @@ static void idletimer_tg_save(const void *ip, printf(" --label %s", info->label); } -static struct xtables_target idletimer_tg_reg = { - .family = NFPROTO_UNSPEC, - .name = "IDLETIMER", - .version = XTABLES_VERSION, - .revision = 0, - .size = XT_ALIGN(sizeof(struct idletimer_tg_info)), - .userspacesize = offsetof(struct idletimer_tg_info, timer), - .help = idletimer_tg_help, - .x6_parse = xtables_option_parse, - .print = idletimer_tg_print, - .save = idletimer_tg_save, - .x6_options = idletimer_tg_opts, +static void idletimer_tg_save_v1(const void *ip, + const struct xt_entry_target *target) +{ + struct idletimer_tg_info_v1 *info = + (struct idletimer_tg_info_v1 *) target->data; + + printf(" --timeout %u", info->timeout); + printf(" --label %s", info->label); + if (info->timer_type == XT_IDLETIMER_ALARM) + printf(" --alarm"); +} + +static void idletimer_tg_parse_v1(struct xt_option_call *cb) +{ + struct idletimer_tg_info_v1 *info = cb->data; + + xtables_option_parse(cb); + if (cb->entry->id == O_ALARM) + info->timer_type = XT_IDLETIMER_ALARM; +} + +static struct xtables_target idletimer_tg_reg[] = { + { + .family = NFPROTO_UNSPEC, + .name = "IDLETIMER", + .version = XTABLES_VERSION, + .revision = 0, + .size = XT_ALIGN(sizeof(struct idletimer_tg_info)), + .userspacesize = offsetof(struct idletimer_tg_info, timer), + .help = idletimer_tg_help, + .x6_parse = xtables_option_parse, + .print = idletimer_tg_print, + .save = idletimer_tg_save, + .x6_options = idletimer_tg_opts, + }, + { + .family = NFPROTO_UNSPEC, + .name = "IDLETIMER", + .version = XTABLES_VERSION, + .revision = 1, + .size = XT_ALIGN(sizeof(struct idletimer_tg_info_v1)), + .userspacesize = offsetof(struct idletimer_tg_info_v1, timer), + .help = idletimer_tg_help_v1, + .x6_parse = idletimer_tg_parse_v1, + .print = idletimer_tg_print_v1, + .save = idletimer_tg_save_v1, + .x6_options = idletimer_tg_opts_v1, + }, + }; void _init(void) { - xtables_register_target(&idletimer_tg_reg); + xtables_register_targets(idletimer_tg_reg, ARRAY_SIZE(idletimer_tg_reg)); } |