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MINOR: dns: Dynamically allocate dns options to reduce the act_rule size

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<.arg.dns.dns_opts> field in the act_rule structure is now dynamically allocated
when a do-resolve rule is parsed. This drastically reduces the structure size.
This commit is contained in:
Christopher Faulet 2020-01-24 18:08:42 +01:00
parent 637259e044
commit a4168434a7
2 changed files with 10 additions and 6 deletions
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2
include/types/action.h
View File

@ -115,7 +115,7 @@ struct act_rule {
char *varname;
char *resolvers_id;
struct dns_resolvers *resolvers;
struct dns_options dns_opts;
struct dns_options *dns_opts;
} dns; /* dns resolution */
struct {
int i; /* integer param (status, nice, loglevel, ..) */

14
src/dns.c
View File

@ -1629,7 +1629,7 @@ int dns_link_resolution(void *requester, int requester_type, int requester_locke
hostname_dn = &stream->dns_ctx.hostname_dn;
hostname_dn_len = stream->dns_ctx.hostname_dn_len;
resolvers = stream->dns_ctx.parent->arg.dns.resolvers;
query_type = ((stream->dns_ctx.parent->arg.dns.dns_opts.family_prio == AF_INET)
query_type = ((stream->dns_ctx.parent->arg.dns.dns_opts->family_prio == AF_INET)
? DNS_RTYPE_A
: DNS_RTYPE_AAAA);
break;
@ -2415,7 +2415,7 @@ enum act_return dns_action_do_resolve(struct act_rule *rule, struct proxy *px,
short ip_sin_family = 0;
void *ip = NULL;
dns_get_ip_from_response(&resolution->response, &rule->arg.dns.dns_opts, NULL,
dns_get_ip_from_response(&resolution->response, rule->arg.dns.dns_opts, NULL,
0, &ip, &ip_sin_family, NULL);
switch (ip_sin_family) {
@ -2533,8 +2533,12 @@ enum act_parse_ret dns_parse_do_resolve(const char **args, int *orig_arg, struct
goto do_resolve_parse_error;
rule->arg.dns.dns_opts = calloc(1, sizeof(*rule->arg.dns.dns_opts));
if (rule->arg.dns.dns_opts == NULL)
goto do_resolve_parse_error;
/* Default priority is ipv6 */
rule->arg.dns.dns_opts.family_prio = AF_INET6;
rule->arg.dns.dns_opts->family_prio = AF_INET6;
/* optional arguments accepted for now:
* ipv4 or ipv6
@ -2548,10 +2552,10 @@ enum act_parse_ret dns_parse_do_resolve(const char **args, int *orig_arg, struct
goto do_resolve_parse_error;
if (strncmp(beg, "ipv4", end - beg) == 0) {
rule->arg.dns.dns_opts.family_prio = AF_INET;
rule->arg.dns.dns_opts->family_prio = AF_INET;
}
else if (strncmp(beg, "ipv6", end - beg) == 0) {
rule->arg.dns.dns_opts.family_prio = AF_INET6;
rule->arg.dns.dns_opts->family_prio = AF_INET6;
}
else {
goto do_resolve_parse_error;