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Use rtalloc1() instead of rtalloc_ign(). It returns a locked

Browse source 
rtentry. We quickly copy the fields of interest, and then
RTFREE_LOCKED(). This should be faster then lock & unlock the
rtentry twice.
This commit is contained in:
Gleb Smirnoff 2008-02-07 11:10:17 +00:00
parent 5702f0f0a5
commit 150c26cb34
1 changed files with 17 additions and 24 deletions
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41
sys/netgraph/netflow/netflow.c
View file

@ -237,9 +237,9 @@ static __inline int
hash_insert(priv_p priv, struct flow_hash_entry *hsh, struct flow_rec *r,
int plen, uint8_t tcp_flags)
{
struct flow_entry *fle;
struct route ro;
struct sockaddr_in *sin;
struct flow_entry *fle;
struct sockaddr_in sin;
struct rtentry *rt;
mtx_assert(&hsh->mtx, MA_OWNED);
@ -265,15 +265,12 @@ hash_insert(priv_p priv, struct flow_hash_entry *hsh, struct flow_rec *r,
* First we do route table lookup on destination address. So we can
* fill in out_ifx, dst_mask, nexthop, and dst_as in future releases.
*/
bzero((caddr_t)&ro, sizeof(ro));
sin = (struct sockaddr_in *)&ro.ro_dst;
sin->sin_len = sizeof(*sin);
sin->sin_family = AF_INET;
sin->sin_addr = fle->f.r.r_dst;
rtalloc_ign(&ro, RTF_CLONING);
if (ro.ro_rt != NULL) {
struct rtentry *rt = ro.ro_rt;
bzero(&sin, sizeof(sin));
sin.sin_len = sizeof(struct sockaddr_in);
sin.sin_family = AF_INET;
sin.sin_addr = fle->f.r.r_dst;
rt = rtalloc1((struct sockaddr *)&sin, 0, RTF_CLONING);
if (rt != NULL) {
fle->f.fle_o_ifx = rt->rt_ifp->if_index;
if (rt->rt_flags & RTF_GATEWAY &&
@ -288,20 +285,16 @@ hash_insert(priv_p priv, struct flow_hash_entry *hsh, struct flow_rec *r,
/* Give up. We can't determine mask :( */
fle->f.dst_mask = 32;
RTFREE(ro.ro_rt);
RTFREE_LOCKED(rt);
}
/* Do route lookup on source address, to fill in src_mask. */
bzero((caddr_t)&ro, sizeof(ro));
sin = (struct sockaddr_in *)&ro.ro_dst;
sin->sin_len = sizeof(*sin);
sin->sin_family = AF_INET;
sin->sin_addr = fle->f.r.r_src;
rtalloc_ign(&ro, RTF_CLONING);
if (ro.ro_rt != NULL) {
struct rtentry *rt = ro.ro_rt;
bzero(&sin, sizeof(sin));
sin.sin_len = sizeof(struct sockaddr_in);
sin.sin_family = AF_INET;
sin.sin_addr = fle->f.r.r_src;
rt = rtalloc1((struct sockaddr *)&sin, 0, RTF_CLONING);
if (rt != NULL) {
if (rt_mask(rt))
fle->f.src_mask = bitcount32(((struct sockaddr_in *)
rt_mask(rt))->sin_addr.s_addr);
@ -309,7 +302,7 @@ hash_insert(priv_p priv, struct flow_hash_entry *hsh, struct flow_rec *r,
/* Give up. We can't determine mask :( */
fle->f.src_mask = 32;
RTFREE(ro.ro_rt);
RTFREE_LOCKED(rt);
}
/* Push new flow at the and of hash. */