aboutsummaryrefslogtreecommitdiff
path: root/sys/netinet/tcp_syncache.c
diff options
context:
space:
mode:
Diffstat (limited to 'sys/netinet/tcp_syncache.c')
-rw-r--r--sys/netinet/tcp_syncache.c68
1 files changed, 34 insertions, 34 deletions
diff --git a/sys/netinet/tcp_syncache.c b/sys/netinet/tcp_syncache.c
index 9c918a95e226..91252354bd98 100644
--- a/sys/netinet/tcp_syncache.c
+++ b/sys/netinet/tcp_syncache.c
@@ -105,7 +105,7 @@
static int tcp_syncookies = 1;
SYSCTL_INT(_net_inet_tcp, OID_AUTO, syncookies, CTLFLAG_RW,
- &tcp_syncookies, 0,
+ &tcp_syncookies, 0,
"Use TCP SYN cookies if the syncache overflows");
static void syncache_drop(struct syncache *, struct syncache_head *);
@@ -117,7 +117,7 @@ static int syncache_respond(struct syncache *, struct mbuf *, struct socket *);
#else
static int syncache_respond(struct syncache *, struct mbuf *);
#endif
-static struct socket *syncache_socket(struct syncache *, struct socket *,
+static struct socket *syncache_socket(struct syncache *, struct socket *,
struct mbuf *m);
static void syncache_timer(void *);
static u_int32_t syncookie_generate(struct syncache *, u_int32_t *);
@@ -169,16 +169,16 @@ SYSCTL_INT(_net_inet_tcp_syncache, OID_AUTO, rexmtlimit, CTLFLAG_RW,
static MALLOC_DEFINE(M_SYNCACHE, "syncache", "TCP syncache");
-#define SYNCACHE_HASH(inc, mask) \
+#define SYNCACHE_HASH(inc, mask) \
((tcp_syncache.hash_secret ^ \
(inc)->inc_faddr.s_addr ^ \
- ((inc)->inc_faddr.s_addr >> 16) ^ \
+ ((inc)->inc_faddr.s_addr >> 16) ^ \
(inc)->inc_fport ^ (inc)->inc_lport) & mask)
-#define SYNCACHE_HASH6(inc, mask) \
+#define SYNCACHE_HASH6(inc, mask) \
((tcp_syncache.hash_secret ^ \
- (inc)->inc6_faddr.s6_addr32[0] ^ \
- (inc)->inc6_faddr.s6_addr32[3] ^ \
+ (inc)->inc6_faddr.s6_addr32[0] ^ \
+ (inc)->inc6_faddr.s6_addr32[3] ^ \
(inc)->inc_fport ^ (inc)->inc_lport) & mask)
#define ENDPTS_EQ(a, b) ( \
@@ -222,16 +222,16 @@ syncache_init(void)
tcp_syncache.rexmt_limit = SYNCACHE_MAXREXMTS;
tcp_syncache.hash_secret = arc4random();
- TUNABLE_INT_FETCH("net.inet.tcp.syncache.hashsize",
+ TUNABLE_INT_FETCH("net.inet.tcp.syncache.hashsize",
&tcp_syncache.hashsize);
- TUNABLE_INT_FETCH("net.inet.tcp.syncache.cachelimit",
+ TUNABLE_INT_FETCH("net.inet.tcp.syncache.cachelimit",
&tcp_syncache.cache_limit);
- TUNABLE_INT_FETCH("net.inet.tcp.syncache.bucketlimit",
+ TUNABLE_INT_FETCH("net.inet.tcp.syncache.bucketlimit",
&tcp_syncache.bucket_limit);
if (!powerof2(tcp_syncache.hashsize)) {
- printf("WARNING: syncache hash size is not a power of 2.\n");
+ printf("WARNING: syncache hash size is not a power of 2.\n");
tcp_syncache.hashsize = 512; /* safe default */
- }
+ }
tcp_syncache.hashmask = tcp_syncache.hashsize - 1;
/* Allocate the hash table. */
@@ -356,15 +356,15 @@ syncache_timer(xslot)
struct inpcb *inp;
INP_INFO_WLOCK(&tcbinfo);
- if (callout_pending(&tcp_syncache.tt_timerq[slot]) ||
- !callout_active(&tcp_syncache.tt_timerq[slot])) {
+ if (callout_pending(&tcp_syncache.tt_timerq[slot]) ||
+ !callout_active(&tcp_syncache.tt_timerq[slot])) {
/* XXX can this happen? */
INP_INFO_WUNLOCK(&tcbinfo);
- return;
- }
- callout_deactivate(&tcp_syncache.tt_timerq[slot]);
+ return;
+ }
+ callout_deactivate(&tcp_syncache.tt_timerq[slot]);
- nsc = TAILQ_FIRST(&tcp_syncache.timerq[slot]);
+ nsc = TAILQ_FIRST(&tcp_syncache.timerq[slot]);
while (nsc != NULL) {
if (ticks < nsc->sc_rxttime)
break;
@@ -592,7 +592,7 @@ syncache_socket(sc, lso, m)
#ifdef INET6
if (sc->sc_inc.inc_isipv6)
inp->in6p_laddr = in6addr_any;
- else
+ else
#endif
inp->inp_laddr.s_addr = INADDR_ANY;
inp->inp_lport = 0;
@@ -619,7 +619,7 @@ syncache_socket(sc, lso, m)
* copied, since it stores previously received options and is
* used to detect if each new option is different than the
* previous one and hence should be passed to a user.
- * If we copied in6p_inputopts, a user would not be able to
+ * If we copied in6p_inputopts, a user would not be able to
* receive options just after calling the accept system call.
*/
inp->inp_flags |= oinp->inp_flags & INP_CONTROLOPTS;
@@ -722,7 +722,7 @@ syncache_socket(sc, lso, m)
* If the SYN,ACK was retransmitted, reset cwnd to 1 segment.
*/
if (sc->sc_rxtslot != 0)
- tp->snd_cwnd = tp->t_maxseg;
+ tp->snd_cwnd = tp->t_maxseg;
callout_reset(tp->tt_keep, tcp_keepinit, tcp_timer_keep, tp);
INP_UNLOCK(inp);
@@ -761,11 +761,11 @@ syncache_expand(inc, th, sop, m)
sc = syncache_lookup(inc, &sch);
if (sc == NULL) {
/*
- * There is no syncache entry, so see if this ACK is
+ * There is no syncache entry, so see if this ACK is
* a returning syncookie. To do this, first:
* A. See if this socket has had a syncache entry dropped in
* the past. We don't want to accept a bogus syncookie
- * if we've never received a SYN.
+ * if we've never received a SYN.
* B. check that the syncookie is valid. If it is, then
* cobble up a fake syncache entry, and return.
*/
@@ -888,7 +888,7 @@ syncache_add(inc, to, th, sop, m)
TAILQ_REMOVE(&tcp_syncache.timerq[sc->sc_rxtslot],
sc, sc_timerq);
SYNCACHE_TIMEOUT(sc, sc->sc_rxtslot);
- tcpstat.tcps_sndacks++;
+ tcpstat.tcps_sndacks++;
tcpstat.tcps_sndtotal++;
}
*sop = NULL;
@@ -899,7 +899,7 @@ syncache_add(inc, to, th, sop, m)
if (sc == NULL) {
/*
* The zone allocator couldn't provide more entries.
- * Treat this as if the cache was full; drop the oldest
+ * Treat this as if the cache was full; drop the oldest
* entry and insert the new one.
*/
/* NB: guarded by INP_INFO_WLOCK(&tcbinfo) */
@@ -945,7 +945,7 @@ syncache_add(inc, to, th, sop, m)
sc->sc_flowlabel = 0;
if (tcp_syncookies) {
sc->sc_iss = syncookie_generate(sc, &flowtmp);
-#ifdef INET6
+#ifdef INET6
if (inc->inc_isipv6 &&
(sc->sc_tp->t_inpcb->in6p_flags & IN6P_AUTOFLOWLABEL)) {
sc->sc_flowlabel = flowtmp & IPV6_FLOWLABEL_MASK;
@@ -953,7 +953,7 @@ syncache_add(inc, to, th, sop, m)
#endif
} else {
sc->sc_iss = arc4random();
-#ifdef INET6
+#ifdef INET6
if (inc->inc_isipv6 &&
(sc->sc_tp->t_inpcb->in6p_flags & IN6P_AUTOFLOWLABEL)) {
sc->sc_flowlabel =
@@ -1014,7 +1014,7 @@ syncache_add(inc, to, th, sop, m)
sc->sc_flags = SCF_SIGNATURE;
#endif
- if (to->to_flags & TOF_SACK)
+ if (to->to_flags & TOF_SACK)
sc->sc_flags |= SCF_SACK;
/*
@@ -1112,7 +1112,7 @@ syncache_respond(sc, m)
hlen =
#ifdef INET6
- (sc->sc_inc.inc_isipv6) ? sizeof(struct ip6_hdr) :
+ (sc->sc_inc.inc_isipv6) ? sizeof(struct ip6_hdr) :
#endif
sizeof(struct ip);
@@ -1288,7 +1288,7 @@ syncache_respond(sc, m)
} else
#endif
{
- th->th_sum = in_pseudo(ip->ip_src.s_addr, ip->ip_dst.s_addr,
+ th->th_sum = in_pseudo(ip->ip_src.s_addr, ip->ip_dst.s_addr,
htons(tlen - hlen + IPPROTO_TCP));
m->m_pkthdr.csum_flags = CSUM_TCP;
m->m_pkthdr.csum_data = offsetof(struct tcphdr, th_sum);
@@ -1330,7 +1330,7 @@ syncache_respond(sc, m)
#define SYNCOOKIE_NSECRETS (1 << SYNCOOKIE_WNDBITS)
#define SYNCOOKIE_TIMEOUT \
(hz * (1 << SYNCOOKIE_WNDBITS) / (1 << SYNCOOKIE_TIMESHIFT))
-#define SYNCOOKIE_DATAMASK ((3 << SYNCOOKIE_WNDBITS) | SYNCOOKIE_WNDMASK)
+#define SYNCOOKIE_DATAMASK ((3 << SYNCOOKIE_WNDBITS) | SYNCOOKIE_WNDMASK)
static struct {
u_int32_t ts_secbits[4];
@@ -1355,9 +1355,9 @@ CTASSERT(sizeof(struct md5_add) == 28);
/*
* Consider the problem of a recreated (and retransmitted) cookie. If the
- * original SYN was accepted, the connection is established. The second
- * SYN is inflight, and if it arrives with an ISN that falls within the
- * receive window, the connection is killed.
+ * original SYN was accepted, the connection is established. The second
+ * SYN is inflight, and if it arrives with an ISN that falls within the
+ * receive window, the connection is killed.
*
* However, since cookies have other problems, this may not be worth
* worrying about.
generated by cgit v1.2.3 (git 2.25.1) at 2025-11-04 10:08:03 +0000