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dns: Fix dns_alloc_pcb for reuse an existing one case

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The logic to use an already existing pcb is wrong because the idx never
advanced in the for loop, so it keep checking the same dns_pcbs[idx] for
each loop iteration. Fix it.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
This commit is contained in:
Axel Lin 2015-11-13 16:01:38 +08:00 committed by goldsimon
parent 29553ba7a1
commit 668d461104
1 changed files with 1 additions and 2 deletions
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3
src/core/dns.c
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@ -851,8 +851,7 @@ dns_alloc_pcb(void)
} }
/* if we come here, creating a new UDP pcb failed, so we have to use /* if we come here, creating a new UDP pcb failed, so we have to use
an already existing one */ an already existing one */
idx = dns_last_pcb_idx + 1; for (i = 0, idx = dns_last_pcb_idx + 1; i < DNS_MAX_SOURCE_PORTS; i++, idx++) {
for (i = 0; i < DNS_MAX_SOURCE_PORTS; i++) {
if (idx >= DNS_MAX_SOURCE_PORTS) { if (idx >= DNS_MAX_SOURCE_PORTS) {
idx = 0; idx = 0;
} }