ip/defrag: fix processing of last short fragment
TFTP'ing a file of size 1747851 bytes with CONFIG_IP_DEFRAG and
CONFIG_TFTP_BLOCKSIZE set to 4096 fails with a timeout, because
the last fragment is not taken into account. This patch fixes
IP fragments having less than 8 bytes of payload.
Signed-off-by: Stephane Fillod <stephane.fillod@grassvalley.com>
Acked-by: Alessandro Rubini <rubini@gnudd.com>
Signed-off-by: Ben Warren <biggerbadderben@gmail.com>
diff --git a/net/net.c b/net/net.c
index cda7319..33fcd90 100644
--- a/net/net.c
+++ b/net/net.c
@@ -1201,7 +1201,8 @@
h = payload + h->next_hole;
}
- if (offset8 + (len / 8) <= h - payload) {
+ /* last fragment may be 1..7 bytes, the "+7" forces acceptance */
+ if (offset8 + ((len + 7) / 8) <= h - payload) {
/* no overlap with holes (dup fragment?) */
return NULL;
}