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net: mdns increase buf size #89338

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net: mdns increase buf size #89338

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6 changes: 6 additions & 0 deletions subsys/net/lib/dns/Kconfig
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Original file line number Diff line number Diff line change
Expand Up @@ -175,6 +175,12 @@ config MDNS_RESPONDER

if MDNS_RESPONDER

config MDNS_RESOLVER_BUF_SIZE
int "Size of the net_buf pool buffers"
default 512
help
For larger DNS SD TXT records and long service instance names, bigger buffers are necessary

config MDNS_RESPONDER_TTL
int "Time-to-Live of returned DNS name"
default 600
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5 changes: 3 additions & 2 deletions subsys/net/lib/dns/mdns_responder.c
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Expand Up @@ -115,8 +115,9 @@ static int setup_dst_addr(int sock, sa_family_t family,
#define DNS_RESOLVER_BUF_CTR (DNS_RESOLVER_MIN_BUF + \
CONFIG_MDNS_RESOLVER_ADDITIONAL_BUF_CTR)

#define MDNS_RESOLVER_BUF_SIZE CONFIG_MDNS_RESOLVER_BUF_SIZE
NET_BUF_POOL_DEFINE(mdns_msg_pool, DNS_RESOLVER_BUF_CTR,
DNS_RESOLVER_MAX_BUF_SIZE, 0, NULL);
MDNS_RESOLVER_BUF_SIZE, 0, NULL);

static void create_ipv6_addr(struct sockaddr_in6 *addr)
{
Expand Down Expand Up @@ -595,7 +596,7 @@ static int dns_read(int sock,
int queries;
int ret;

data_len = MIN(len, DNS_RESOLVER_MAX_BUF_SIZE);
data_len = MIN(len, MDNS_RESOLVER_BUF_SIZE);

/* Store the DNS query name into a temporary net_buf, which will be
* eventually used to send a response
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