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net: ipv6: Handle large IPv6 packets properly

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Current implementation does not handle large extension headers
(e.g HBHO). Which resulted network stack crashes or due to
misinterpretation of lengths network packets are dropped. Also
caused issues while preparing IPv6 packet (e.g. large HBHO header
with IPv6 fragmentation support).

Issues fixed and provided more unit tests.

Signed-off-by: Ravi kumar Veeramally <ravikumar.veeramally@linux.intel.com>
This commit is contained in:
Ravi kumar Veeramally 2018-07-19 15:21:25 +03:00 • committed by Jukka Rissanen
commit 3fafe4f9ad
7 changed files with 1854 additions and 479 deletions
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26
subsys/net/lib/http/http_server.c
View file

@ -784,29 +784,27 @@ ws_only:
struct net_buf *hdr, *payload;
struct net_pkt *cloned;
ret = net_pkt_split(pkt, pkt->frags,
ctx->websocket.data_waiting,
&payload, &hdr,
ctx->timeout);
if (ret < 0) {
net_pkt_unref(pkt);
return;
}
net_pkt_frag_unref(pkt->frags);
payload = pkt->frags;
pkt->frags = NULL;
cloned = net_pkt_clone(pkt, ctx->timeout);
if (!cloned) {
net_pkt_unref(pkt);
net_pkt_frag_unref(payload);
return;
}
ret = net_pkt_split(pkt, payload,
ctx->websocket.data_waiting,
&hdr, ctx->timeout);
if (ret < 0) {
net_pkt_unref(pkt);
net_pkt_frag_unref(payload);
net_pkt_unref(cloned);
return;
}
pkt->frags = payload;
payload->frags = NULL;
net_pkt_compact(pkt);
cloned->frags = hdr;
ctx->websocket.pending = cloned;