net: ethernet: IPv6 packet length should be relevantly handled

Tomasz Bursztyka · Tomasz Bursztyka · commit ff5954890a05 · 2017-01-02T10:03:18.000+01:00
It's much different than IPv4 where it's possible to find the whole
packet length. Here it has to count also the ipv6 header size by itself.

Jira: ZEP-1422

Change-Id: I84b1602ac75ef81b9ceda7898ca9dedf2e54d633
Signed-off-by: Tomasz Bursztyka &lt;tomasz.bursztyka@linux.intel.com&gt;
diff --git a/subsys/net/ip/l2/ethernet.c b/subsys/net/ip/l2/ethernet.c
@@ -75,7 +75,8 @@ static inline void ethernet_update_length(struct net_if *iface,
 		       NET_IPV4_BUF(buf)->len[1]);
 	} else {
 		len = ((NET_IPV6_BUF(buf)->len[0] << 8) +
-		       NET_IPV6_BUF(buf)->len[1]);
+		       NET_IPV6_BUF(buf)->len[1]) +
+			NET_IPV6H_LEN;
 	}
 
 	if (len < NET_ETH_MINIMAL_FRAME_SIZE - sizeof(struct net_eth_hdr)) {

Original file line number	Diff line number	Diff line change
`@@ -75,7 +75,8 @@ static inline void ethernet_update_length(struct net_if *iface,`
`75`	`75`	`NET_IPV4_BUF(buf)->len[1]);`
`76`	`76`	`} else {`
`77`	`77`	`len = ((NET_IPV6_BUF(buf)->len[0] << 8) +`
`78`		`- NET_IPV6_BUF(buf)->len[1]);`
	`78`	`+ NET_IPV6_BUF(buf)->len[1]) +`
	`79`	`+ NET_IPV6H_LEN;`
`79`	`80`	`}`
`80`	`81`
`81`	`82`	`if (len < NET_ETH_MINIMAL_FRAME_SIZE - sizeof(struct net_eth_hdr)) {`