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[NETFILTER]: add correct bridging support to nfnetlink_{queue,log}
This patch adds support for passing the real 'physical' device ifindex down to userspace via nfnetlink_log and nfnetlink_queue. This feature basically obsoletes net/bridge/netfilter/ebt_ulog.c, and it is likely ebt_ulog.c will die with one of the next couple of patches. Signed-off-by: Harald Welte <laforge@netfilter.org> Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Harald Welte
David S. Miller
parent
f6ebe77f95
commit
fbcd923c3e
4 changed files with 120 additions and 0 deletions
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@ -40,6 +40,8 @@ enum nfulnl_attr_type {
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NFULA_TIMESTAMP, /* nfulnl_msg_packet_timestamp */
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NFULA_IFINDEX_INDEV, /* u_int32_t ifindex */
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NFULA_IFINDEX_OUTDEV, /* u_int32_t ifindex */
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NFULA_IFINDEX_PHYSINDEV, /* u_int32_t ifindex */
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NFULA_IFINDEX_PHYSOUTDEV, /* u_int32_t ifindex */
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NFULA_HWADDR, /* nfulnl_msg_packet_hw */
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NFULA_PAYLOAD, /* opaque data payload */
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NFULA_PREFIX, /* string prefix */
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@ -36,6 +36,8 @@ enum nfqnl_attr_type {
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NFQA_TIMESTAMP, /* nfqnl_msg_packet_timestamp */
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NFQA_IFINDEX_INDEV, /* u_int32_t ifindex */
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NFQA_IFINDEX_OUTDEV, /* u_int32_t ifindex */
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NFQA_IFINDEX_PHYSINDEV, /* u_int32_t ifindex */
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NFQA_IFINDEX_PHYSOUTDEV, /* u_int32_t ifindex */
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NFQA_HWADDR, /* nfqnl_msg_packet_hw */
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NFQA_PAYLOAD, /* opaque data payload */
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@ -33,6 +33,10 @@
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#include <asm/atomic.h>
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#ifdef CONFIG_BRIDGE_NETFILTER
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#include "../bridge/br_private.h"
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#endif
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#define NFULNL_NLBUFSIZ_DEFAULT 4096
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#define NFULNL_TIMEOUT_DEFAULT 100 /* every second */
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#define NFULNL_QTHRESH_DEFAULT 100 /* 100 packets */
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@ -412,14 +416,64 @@ __build_packet_message(struct nfulnl_instance *inst,
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if (indev) {
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tmp_uint = htonl(indev->ifindex);
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#ifndef CONFIG_BRIDGE_NETFILTER
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NFA_PUT(inst->skb, NFULA_IFINDEX_INDEV, sizeof(tmp_uint),
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&tmp_uint);
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#else
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if (pf == PF_BRIDGE) {
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/* Case 1: outdev is physical input device, we need to
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* look for bridge group (when called from
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* netfilter_bridge) */
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NFA_PUT(inst->skb, NFULA_IFINDEX_PHYSINDEV,
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sizeof(tmp_uint), &tmp_uint);
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/* this is the bridge group "brX" */
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tmp_uint = htonl(indev->br_port->br->dev->ifindex);
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NFA_PUT(inst->skb, NFULA_IFINDEX_INDEV,
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sizeof(tmp_uint), &tmp_uint);
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} else {
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/* Case 2: indev is bridge group, we need to look for
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* physical device (when called from ipv4) */
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NFA_PUT(inst->skb, NFULA_IFINDEX_INDEV,
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sizeof(tmp_uint), &tmp_uint);
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if (skb->nf_bridge && skb->nf_bridge->physindev) {
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tmp_uint =
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htonl(skb->nf_bridge->physindev->ifindex);
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NFA_PUT(inst->skb, NFULA_IFINDEX_PHYSINDEV,
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sizeof(tmp_uint), &tmp_uint);
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}
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}
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#endif
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}
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if (outdev) {
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tmp_uint = htonl(outdev->ifindex);
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#ifndef CONFIG_BRIDGE_NETFILTER
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NFA_PUT(inst->skb, NFULA_IFINDEX_OUTDEV, sizeof(tmp_uint),
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&tmp_uint);
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#else
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if (pf == PF_BRIDGE) {
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/* Case 1: outdev is physical output device, we need to
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* look for bridge group (when called from
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* netfilter_bridge) */
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NFA_PUT(inst->skb, NFULA_IFINDEX_PHYSOUTDEV,
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sizeof(tmp_uint), &tmp_uint);
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/* this is the bridge group "brX" */
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tmp_uint = htonl(outdev->br_port->br->dev->ifindex);
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NFA_PUT(inst->skb, NFULA_IFINDEX_OUTDEV,
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sizeof(tmp_uint), &tmp_uint);
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} else {
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/* Case 2: indev is a bridge group, we need to look
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* for physical device (when called from ipv4) */
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NFA_PUT(inst->skb, NFULA_IFINDEX_OUTDEV,
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sizeof(tmp_uint), &tmp_uint);
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if (skb->nf_bridge) {
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tmp_uint =
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htonl(skb->nf_bridge->physoutdev->ifindex);
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NFA_PUT(inst->skb, NFULA_IFINDEX_PHYSOUTDEV,
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sizeof(tmp_uint), &tmp_uint);
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}
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}
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#endif
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}
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if (skb->nfmark) {
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@ -536,6 +590,10 @@ nfulnl_log_packet(unsigned int pf,
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+ NFA_SPACE(sizeof(struct nfulnl_msg_packet_hdr))
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+ NFA_SPACE(sizeof(u_int32_t)) /* ifindex */
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+ NFA_SPACE(sizeof(u_int32_t)) /* ifindex */
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#ifdef CONFIG_BRIDGE_NETFILTER
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+ NFA_SPACE(sizeof(u_int32_t)) /* ifindex */
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+ NFA_SPACE(sizeof(u_int32_t)) /* ifindex */
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#endif
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+ NFA_SPACE(sizeof(u_int32_t)) /* mark */
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+ NFA_SPACE(sizeof(u_int32_t)) /* uid */
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+ NFA_SPACE(NFULNL_PREFIXLEN) /* prefix */
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@ -30,6 +30,10 @@
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#include <asm/atomic.h>
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#ifdef CONFIG_BRIDGE_NETFILTER
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#include "../bridge/br_private.h"
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#endif
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#define NFQNL_QMAX_DEFAULT 1024
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#if 0
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@ -361,6 +365,10 @@ nfqnl_build_packet_message(struct nfqnl_instance *queue,
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size = NLMSG_SPACE(sizeof(struct nfqnl_msg_packet_hdr))
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+ NLMSG_SPACE(sizeof(u_int32_t)) /* ifindex */
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+ NLMSG_SPACE(sizeof(u_int32_t)) /* ifindex */
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#ifdef CONFIG_BRIDGE_NETFILTER
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+ NLMSG_SPACE(sizeof(u_int32_t)) /* ifindex */
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+ NLMSG_SPACE(sizeof(u_int32_t)) /* ifindex */
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#endif
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+ NLMSG_SPACE(sizeof(u_int32_t)) /* mark */
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+ NLMSG_SPACE(sizeof(struct nfqnl_msg_packet_hw))
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+ NLMSG_SPACE(sizeof(struct nfqnl_msg_packet_timestamp));
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@ -412,12 +420,62 @@ nfqnl_build_packet_message(struct nfqnl_instance *queue,
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if (entry->info->indev) {
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tmp_uint = htonl(entry->info->indev->ifindex);
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#ifndef CONFIG_BRIDGE_NETFILTER
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NFA_PUT(skb, NFQA_IFINDEX_INDEV, sizeof(tmp_uint), &tmp_uint);
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#else
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if (entry->info->pf == PF_BRIDGE) {
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/* Case 1: indev is physical input device, we need to
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* look for bridge group (when called from
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* netfilter_bridge) */
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NFA_PUT(skb, NFQA_IFINDEX_PHYSINDEV, sizeof(tmp_uint),
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&tmp_uint);
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/* this is the bridge group "brX" */
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tmp_uint = htonl(entry->info->indev->br_port->br->dev->ifindex);
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NFA_PUT(skb, NFQA_IFINDEX_INDEV, sizeof(tmp_uint),
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&tmp_uint);
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} else {
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/* Case 2: indev is bridge group, we need to look for
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* physical device (when called from ipv4) */
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NFA_PUT(skb, NFQA_IFINDEX_INDEV, sizeof(tmp_uint),
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&tmp_uint);
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if (entry->skb->nf_bridge
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&& entry->skb->nf_bridge->physindev) {
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tmp_uint = htonl(entry->skb->nf_bridge->physindev->ifindex);
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NFA_PUT(skb, NFQA_IFINDEX_PHYSINDEV,
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sizeof(tmp_uint), &tmp_uint);
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}
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}
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#endif
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}
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if (entry->info->outdev) {
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tmp_uint = htonl(entry->info->outdev->ifindex);
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#ifndef CONFIG_BRIDGE_NETFILTER
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NFA_PUT(skb, NFQA_IFINDEX_OUTDEV, sizeof(tmp_uint), &tmp_uint);
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#else
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if (entry->info->pf == PF_BRIDGE) {
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/* Case 1: outdev is physical output device, we need to
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* look for bridge group (when called from
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* netfilter_bridge) */
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NFA_PUT(skb, NFQA_IFINDEX_PHYSOUTDEV, sizeof(tmp_uint),
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&tmp_uint);
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/* this is the bridge group "brX" */
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tmp_uint = htonl(entry->info->outdev->br_port->br->dev->ifindex);
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NFA_PUT(skb, NFQA_IFINDEX_OUTDEV, sizeof(tmp_uint),
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&tmp_uint);
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} else {
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/* Case 2: outdev is bridge group, we need to look for
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* physical output device (when called from ipv4) */
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NFA_PUT(skb, NFQA_IFINDEX_OUTDEV, sizeof(tmp_uint),
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&tmp_uint);
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if (entry->skb->nf_bridge
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&& entry->skb->nf_bridge->physoutdev) {
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tmp_uint = htonl(entry->skb->nf_bridge->physoutdev->ifindex);
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NFA_PUT(skb, NFQA_IFINDEX_PHYSOUTDEV,
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sizeof(tmp_uint), &tmp_uint);
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}
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}
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#endif
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}
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if (entry->skb->nfmark) {
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