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ANSIfy and tidy up comments.

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Sponsored by:   TCP/IP Optimization Fundraise 2005
This commit is contained in:
Andre Oppermann 2006-06-17 17:49:11 +00:00
parent 351630c40d
commit 0c529372f0
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=159697
1 changed files with 23 additions and 52 deletions
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75
sys/netinet/tcp_syncache.c
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@ -120,8 +120,9 @@ static struct socket *syncache_socket(struct syncache *, struct socket *,
static void syncache_timer(void *);
static void syncookie_init(void);
static u_int32_t syncookie_generate(struct syncache *, u_int32_t *);
static struct syncache *syncookie_lookup(struct in_conninfo *,
struct tcphdr *, struct socket *);
static struct syncache
*syncookie_lookup(struct in_conninfo *, struct tcphdr *,
struct socket *);
/*
* Transmit the SYN,ACK fewer times than TCP_MAXRXTSHIFT specifies.
@ -270,9 +271,7 @@ syncache_init(void)
* Locks and unlocks the syncache_head autonomously.
*/
static void
syncache_insert(sc, sch)
struct syncache *sc;
struct syncache_head *sch;
syncache_insert(struct syncache *sc, struct syncache_head *sch)
{
struct syncache *sc2;
@ -308,9 +307,7 @@ syncache_insert(sc, sch)
* Expects locked syncache head.
*/
static void
syncache_drop(sc, sch)
struct syncache *sc;
struct syncache_head *sch;
syncache_drop(struct syncache *sc, struct syncache_head *sch)
{
SCH_LOCK_ASSERT(sch);
@ -328,8 +325,7 @@ syncache_drop(sc, sch)
* One separate timer for each bucket row.
*/
static void
syncache_timer(xsch)
void *xsch;
syncache_timer(void *xsch)
{
struct syncache_head *sch = (struct syncache_head *)xsch;
struct syncache *sc, *nsc;
@ -373,9 +369,7 @@ syncache_timer(xsch)
* Returns always with locked syncache_head plus a matching entry or NULL.
*/
struct syncache *
syncache_lookup(inc, schp)
struct in_conninfo *inc;
struct syncache_head **schp;
syncache_lookup(struct in_conninfo *inc, struct syncache_head **schp)
{
struct syncache *sc;
struct syncache_head *sch;
@ -422,9 +416,7 @@ syncache_lookup(inc, schp)
* connection is in the syn cache. If it is, zap it.
*/
void
syncache_chkrst(inc, th)
struct in_conninfo *inc;
struct tcphdr *th;
syncache_chkrst(struct in_conninfo *inc, struct tcphdr *th)
{
struct syncache *sc;
struct syncache_head *sch;
@ -457,8 +449,7 @@ syncache_chkrst(inc, th)
}
void
syncache_badack(inc)
struct in_conninfo *inc;
syncache_badack(struct in_conninfo *inc)
{
struct syncache *sc;
struct syncache_head *sch;
@ -473,9 +464,7 @@ syncache_badack(inc)
}
void
syncache_unreach(inc, th)
struct in_conninfo *inc;
struct tcphdr *th;
syncache_unreach(struct in_conninfo *inc, struct tcphdr *th)
{
struct syncache *sc;
struct syncache_head *sch;
@ -511,10 +500,7 @@ syncache_unreach(inc, th)
* Build a new TCP socket structure from a syncache entry.
*/
static struct socket *
syncache_socket(sc, lso, m)
struct syncache *sc;
struct socket *lso;
struct mbuf *m;
syncache_socket(struct syncache *sc, struct socket *lso, struct mbuf *m)
{
struct inpcb *inp = NULL;
struct socket *so;
@ -576,12 +562,12 @@ syncache_socket(sc, lso, m)
goto abort;
}
#ifdef IPSEC
/* copy old policy into new socket's */
/* Copy old policy into new socket's. */
if (ipsec_copy_pcbpolicy(sotoinpcb(lso)->inp_sp, inp->inp_sp))
printf("syncache_expand: could not copy policy\n");
#endif
#ifdef FAST_IPSEC
/* copy old policy into new socket's */
/* Copy old policy into new socket's. */
if (ipsec_copy_policy(sotoinpcb(lso)->inp_sp, inp->inp_sp))
printf("syncache_expand: could not copy policy\n");
#endif
@ -713,11 +699,8 @@ syncache_socket(sc, lso, m)
* the SYN-RECEIVED state.
*/
int
syncache_expand(inc, th, lsop, m)
struct in_conninfo *inc;
struct tcphdr *th;
struct socket **lsop;
struct mbuf *m;
syncache_expand(struct in_conninfo *inc, struct tcphdr *th,
struct socket **lsop, struct mbuf *m)
{
struct syncache *sc;
struct syncache_head *sch;
@ -805,13 +788,8 @@ syncache_expand(inc, th, lsop, m)
* the data, we avoid this DoS scenario.
*/
int
syncache_add(inc, to, th, inp, lsop, m)
struct in_conninfo *inc;
struct tcpopt *to;
struct tcphdr *th;
struct inpcb *inp;
struct socket **lsop;
struct mbuf *m;
syncache_add(struct in_conninfo *inc, struct tcpopt *to, struct tcphdr *th,
struct inpcb *inp, struct socket **lsop, struct mbuf *m)
{
struct tcpcb *tp;
struct socket *so;
@ -862,8 +840,7 @@ syncache_add(inc, to, th, inp, lsop, m)
* See if we already have an entry for this connection.
* If we do, resend the SYN,ACK, and reset the retransmit timer.
*
* XXX
* should the syncache be re-initialized with the contents
* XXX: should the syncache be re-initialized with the contents
* of the new SYN here (which may have different options?)
*/
sc = syncache_lookup(inc, &sch); /* returns locked entry */
@ -985,7 +962,7 @@ syncache_add(inc, to, th, inp, lsop, m)
* If listening socket requested TCP digests, and received SYN
* contains the option, flag this in the syncache so that
* syncache_respond() will do the right thing with the SYN+ACK.
* XXX Currently we always record the option by default and will
* XXX: Currently we always record the option by default and will
* attempt to use it in syncache_respond().
*/
if (to->to_flags & TOF_SIGNATURE)
@ -1013,9 +990,7 @@ syncache_add(inc, to, th, inp, lsop, m)
}
static int
syncache_respond(sc, m)
struct syncache *sc;
struct mbuf *m;
syncache_respond(struct syncache *sc, struct mbuf *m)
{
u_int8_t *optp;
int optlen, error;
@ -1037,7 +1012,7 @@ syncache_respond(sc, m)
KASSERT((&sc->sc_inc) != NULL, ("syncache_respond with NULL in_conninfo pointer"));
/* Determine MSS we advertize to other end of connection */
/* Determine MSS we advertize to other end of connection. */
mssopt = tcp_mssopt(&sc->sc_inc);
/* Compute the size of the TCP options. */
@ -1058,8 +1033,7 @@ syncache_respond(sc, m)
tlen = hlen + sizeof(struct tcphdr) + optlen;
/*
* XXX
* assume that the entire packet will fit in a header mbuf
* XXX: Assume that the entire packet will fit in a header mbuf.
*/
KASSERT(max_linkhdr + tlen <= MHLEN, ("syncache: mbuf too small"));
@ -1361,10 +1335,7 @@ syncookie_generate(struct syncache *sc, u_int32_t *flowid)
}
static struct syncache *
syncookie_lookup(inc, th, so)
struct in_conninfo *inc;
struct tcphdr *th;
struct socket *so;
syncookie_lookup(struct in_conninfo *inc, struct tcphdr *th, struct socket *so)
{
u_int32_t md5_buffer[4];
struct syncache *sc;