From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Florian Westphal , Pablo Neira Ayuso Subject: [PATCH 3.19 177/177] netfilter: bridge: really save frag_max_size between PRE and POST_ROUTING Date: Sat, 2 May 2015 21:03:19 +0200 Message-Id: <20150502190128.007958011@linuxfoundation.org> In-Reply-To: <20150502190119.666291882@linuxfoundation.org> References: <20150502190119.666291882@linuxfoundation.org> MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-15 Sender: linux-kernel-owner@vger.kernel.org List-ID: 3.19-stable review patch. If anyone has any objections, please let me know. ------------------ From: Florian Westphal commit 0b67c43ce36a9964f1d5e3f973ee19eefd3f9f8f upstream. We also need to save/store in forward, else br_parse_ip_options call will zero frag_max_size as well. Fixes: 93fdd47e5 ('bridge: Save frag_max_size between PRE_ROUTING and POST_ROUTING') Signed-off-by: Florian Westphal Signed-off-by: Pablo Neira Ayuso Signed-off-by: Greg Kroah-Hartman --- net/bridge/br_netfilter.c | 17 +++++++++++++++-- 1 file changed, 15 insertions(+), 2 deletions(-) --- a/net/bridge/br_netfilter.c +++ b/net/bridge/br_netfilter.c @@ -651,6 +651,13 @@ static int br_nf_forward_finish(struct s struct net_device *in; if (!IS_ARP(skb) && !IS_VLAN_ARP(skb)) { + int frag_max_size; + + if (skb->protocol == htons(ETH_P_IP)) { + frag_max_size = IPCB(skb)->frag_max_size; + BR_INPUT_SKB_CB(skb)->frag_max_size = frag_max_size; + } + in = nf_bridge->physindev; if (nf_bridge->mask & BRNF_PKT_TYPE) { skb->pkt_type = PACKET_OTHERHOST; @@ -710,8 +717,14 @@ static unsigned int br_nf_forward_ip(con nf_bridge->mask |= BRNF_PKT_TYPE; } - if (pf == NFPROTO_IPV4 && br_parse_ip_options(skb)) - return NF_DROP; + if (pf == NFPROTO_IPV4) { + int frag_max = BR_INPUT_SKB_CB(skb)->frag_max_size; + + if (br_parse_ip_options(skb)) + return NF_DROP; + + IPCB(skb)->frag_max_size = frag_max; + } /* The physdev module checks on this */ nf_bridge->mask |= BRNF_BRIDGED;