linux-kernel - [PATCH 3/3] ipgre: capture inner headers during encapsulation

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <1352427483-4380-4-git-send-email-joseph.gasparakis@intel.com>
Date:	Thu,  8 Nov 2012 18:18:03 -0800
From:	Joseph Gasparakis <joseph.gasparakis@...el.com>
To:	davem@...emloft.net, shemminger@...tta.com, chrisw@...s-sol.org
Cc:	Joseph Gasparakis <joseph.gasparakis@...el.com>,
	netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
	Peter P Waskiewicz Jr <peter.p.waskiewicz.jr@...el.com>
Subject: [PATCH 3/3] ipgre: capture inner headers during encapsulation

Populating the inner header pointers of skb for ipgre
This patch has been compile-tested only.

Signed-off-by: Joseph Gasparakis <joseph.gasparakis@...el.com>
Signed-off-by: Peter P Waskiewicz Jr <peter.p.waskiewicz.jr@...el.com>
---
 net/ipv4/ip_gre.c | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/net/ipv4/ip_gre.c b/net/ipv4/ip_gre.c
index 7240f8e..ec3ebb1 100644
--- a/net/ipv4/ip_gre.c
+++ b/net/ipv4/ip_gre.c
@@ -766,6 +766,7 @@ static netdev_tx_t ipgre_tunnel_xmit(struct sk_buff *skb, struct net_device *dev
 	int    gre_hlen;
 	__be32 dst;
 	int    mtu;
+	unsigned int offset;
 
 	if (skb->ip_summed == CHECKSUM_PARTIAL &&
 	    skb_checksum_help(skb))
@@ -902,6 +903,17 @@ static netdev_tx_t ipgre_tunnel_xmit(struct sk_buff *skb, struct net_device *dev
 			tunnel->err_count = 0;
 	}
 
+	offset = skb->data - skb->head;
+
+	skb_reset_inner_mac_header(skb);
+
+	if (skb->network_header)
+		skb_set_inner_network_header(skb, skb->network_header - offset);
+
+	if (skb->transport_header)
+		skb_set_inner_transport_header(skb, skb->transport_header -
+					       offset);
+
 	max_headroom = LL_RESERVED_SPACE(tdev) + gre_hlen + rt->dst.header_len;
 
 	if (skb_headroom(skb) < max_headroom || skb_shared(skb)||
-- 
1.7.11.7

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/