Commit d7a5c324 authored by Patrick McHardy's avatar Patrick McHardy Committed by David S. Miller
Browse files

[NETFILTER]: nfnetlink_log: remove useless prefix length limitation



There is no reason for limiting netlink attributes in size.
Signed-off-by: default avatarPatrick McHardy <kaber@trash.net>
parent 829e17a1
......@@ -32,8 +32,6 @@ struct nfulnl_msg_packet_timestamp {
aligned_be64 usec;
};
#define NFULNL_PREFIXLEN 30 /* just like old log target */
enum nfulnl_attr_type {
NFULA_UNSPEC,
NFULA_PACKET_HDR,
......
......@@ -408,7 +408,7 @@ __build_packet_message(struct nfulnl_instance *inst,
const struct net_device *indev,
const struct net_device *outdev,
const struct nf_loginfo *li,
const char *prefix)
const char *prefix, unsigned int plen)
{
unsigned char *old_tail;
struct nfulnl_msg_packet_hdr pmsg;
......@@ -432,12 +432,8 @@ __build_packet_message(struct nfulnl_instance *inst,
NFA_PUT(inst->skb, NFULA_PACKET_HDR, sizeof(pmsg), &pmsg);
if (prefix) {
int slen = strlen(prefix);
if (slen > NFULNL_PREFIXLEN)
slen = NFULNL_PREFIXLEN;
NFA_PUT(inst->skb, NFULA_PREFIX, slen, prefix);
}
if (prefix)
NFA_PUT(inst->skb, NFULA_PREFIX, plen, prefix);
if (indev) {
tmp_uint = htonl(indev->ifindex);
......@@ -601,6 +597,7 @@ nfulnl_log_packet(unsigned int pf,
const struct nf_loginfo *li;
unsigned int qthreshold;
unsigned int nlbufsiz;
unsigned int plen;
if (li_user && li_user->type == NF_LOG_TYPE_ULOG)
li = li_user;
......@@ -616,6 +613,10 @@ nfulnl_log_packet(unsigned int pf,
return;
}
plen = 0;
if (prefix)
plen = strlen(prefix);
/* all macros expand to constant values at compile time */
/* FIXME: do we want to make the size calculation conditional based on
* what is actually present? way more branches and checks, but more
......@@ -630,7 +631,7 @@ nfulnl_log_packet(unsigned int pf,
#endif
+ NFA_SPACE(sizeof(u_int32_t)) /* mark */
+ NFA_SPACE(sizeof(u_int32_t)) /* uid */
+ NFA_SPACE(NFULNL_PREFIXLEN) /* prefix */
+ NFA_SPACE(plen) /* prefix */
+ NFA_SPACE(sizeof(struct nfulnl_msg_packet_hw))
+ NFA_SPACE(sizeof(struct nfulnl_msg_packet_timestamp));
......@@ -701,7 +702,7 @@ nfulnl_log_packet(unsigned int pf,
inst->qlen++;
__build_packet_message(inst, skb, data_len, pf,
hooknum, in, out, li, prefix);
hooknum, in, out, li, prefix, plen);
/* timer_pending always called within inst->lock, so there
* is no chance of a race here */
......
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