pool for routing pcb

[Alexander Bluhm]

Hi,

Same thing for routing socket as for IPsec pfkey PCB.
Convert struct rtpcb malloc(9) to pool_get(9).

ok?

bluhm

Index: net/rtsock.c
===================================================================
RCS file: /data/mirror/openbsd/cvs/src/sys/net/rtsock.c,v
retrieving revision 1.288
diff -u -p -r1.288 rtsock.c
--- net/rtsock.c        21 Jun 2019 17:11:42 -0000      1.288
+++ net/rtsock.c        17 Jul 2019 18:55:30 -0000
@@ -69,6 +69,7 @@
 #include <sys/socket.h>
 #include <sys/socketvar.h>
 #include <sys/domain.h>
+#include <sys/pool.h>
 #include <sys/protosw.h>
 #include <sys/srp.h>

@@ -158,6 +159,7 @@ struct rtptable {
        unsigned int            rtp_count;
 };

+struct pool rtpcb_pool;
 struct rtptable rtptable;

 /*
@@ -177,6 +179,8 @@ route_prinit(void)
        srpl_rc_init(&rtptable.rtp_rc, rcb_ref, rcb_unref, NULL);
        rw_init(&rtptable.rtp_lk, "rtsock");
        SRPL_INIT(&rtptable.rtp_list);
+       pool_init(&rtpcb_pool, sizeof(struct rtpcb), 0,
+           IPL_NONE, PR_WAITOK, "rtpcb", NULL);
 }

 void
@@ -294,7 +298,7 @@ route_attach(struct socket *so, int prot
         * code does not care about the additional fields
         * and works directly on the raw socket.
         */
-       rop = malloc(sizeof(struct rtpcb), M_PCB, M_WAITOK|M_ZERO);
+       rop = pool_get(&rtpcb_pool, PR_WAITOK|PR_ZERO);
        so->so_pcb = rop;
        /* Init the timeout structure */
        timeout_set(&rop->rop_timeout, rtm_senddesync_timer, so);
@@ -305,7 +309,7 @@ route_attach(struct socket *so, int prot
        else
                error = soreserve(so, ROUTESNDQ, ROUTERCVQ);
        if (error) {
-               free(rop, M_PCB, sizeof(struct rtpcb));
+               pool_put(&rtpcb_pool, rop);
                return (error);
        }

@@ -350,7 +354,7 @@ route_detach(struct socket *so)

        so->so_pcb = NULL;
        KASSERT((so->so_state & SS_NOFDREF) == 0);
-       free(rop, M_PCB, sizeof(struct rtpcb));
+       pool_put(&rtpcb_pool, rop);

        return (0);
 }