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udp: embed inpcb into udpcb
See similar change to TCP e68b379244 for more context. For UDP the
change is much simplier, though.
This commit is contained in:
Gleb Smirnoff
parent
c24a6b32bb
commit
483fe96511
@ -149,8 +149,6 @@ SYSCTL_ULONG(_net_inet_udp, UDPCTL_RECVSPACE, recvspace, CTLFLAG_RW,
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VNET_DEFINE(struct inpcbinfo, udbinfo);
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VNET_DEFINE(struct inpcbinfo, ulitecbinfo);
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VNET_DEFINE_STATIC(uma_zone_t, udpcb_zone);
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#define V_udpcb_zone VNET(udpcb_zone)
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#ifndef UDBHASHSIZE
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#define UDBHASHSIZE 128
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@ -170,8 +168,8 @@ static int udp_output(struct inpcb *, struct mbuf *, struct sockaddr *,
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struct mbuf *, struct thread *, int);
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#endif
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INPCBSTORAGE_DEFINE(udpcbstor, inpcb, "udpinp", "udp_inpcb", "udp", "udphash");
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INPCBSTORAGE_DEFINE(udplitecbstor, inpcb, "udpliteinp", "udplite_inpcb",
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INPCBSTORAGE_DEFINE(udpcbstor, udpcb, "udpinp", "udp_inpcb", "udp", "udphash");
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INPCBSTORAGE_DEFINE(udplitecbstor, udpcb, "udpliteinp", "udplite_inpcb",
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"udplite", "udplitehash");
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static void
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@ -186,11 +184,6 @@ udp_vnet_init(void *arg __unused)
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* a 4-tuple, flip this to 4-tuple.
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*/
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in_pcbinfo_init(&V_udbinfo, &udpcbstor, UDBHASHSIZE, UDBHASHSIZE);
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V_udpcb_zone = uma_zcreate("udpcb", sizeof(struct udpcb),
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NULL, NULL, NULL, NULL, UMA_ALIGN_PTR, 0);
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uma_zone_set_max(V_udpcb_zone, maxsockets);
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uma_zone_set_warning(V_udpcb_zone, "kern.ipc.maxsockets limit reached");
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/* Additional pcbinfo for UDP-Lite */
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in_pcbinfo_init(&V_ulitecbinfo, &udplitecbstor, UDBHASHSIZE,
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UDBHASHSIZE);
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@ -212,25 +205,6 @@ kmod_udpstat_inc(int statnum)
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counter_u64_add(VNET(udpstat)[statnum], 1);
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}
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int
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udp_newudpcb(struct inpcb *inp)
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{
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struct udpcb *up;
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up = uma_zalloc(V_udpcb_zone, M_NOWAIT | M_ZERO);
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if (up == NULL)
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return (ENOBUFS);
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inp->inp_ppcb = up;
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return (0);
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}
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void
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udp_discardcb(struct udpcb *up)
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{
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uma_zfree(V_udpcb_zone, up);
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}
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#ifdef VIMAGE
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static void
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udp_destroy(void *unused __unused)
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@ -238,7 +212,6 @@ udp_destroy(void *unused __unused)
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in_pcbinfo_destroy(&V_udbinfo);
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in_pcbinfo_destroy(&V_ulitecbinfo);
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uma_zdestroy(V_udpcb_zone);
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}
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VNET_SYSUNINIT(udp, SI_SUB_PROTO_DOMAIN, SI_ORDER_FOURTH, udp_destroy, NULL);
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#endif
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@ -1482,8 +1455,9 @@ static int
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udp_attach(struct socket *so, int proto, struct thread *td)
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{
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static uint32_t udp_flowid;
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struct inpcb *inp;
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struct inpcbinfo *pcbinfo;
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struct inpcb *inp;
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struct udpcb *up;
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int error;
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pcbinfo = udp_get_inpcbinfo(so->so_proto->pr_protocol);
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@ -1500,13 +1474,8 @@ udp_attach(struct socket *so, int proto, struct thread *td)
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inp->inp_ip_ttl = V_ip_defttl;
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inp->inp_flowid = atomic_fetchadd_int(&udp_flowid, 1);
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inp->inp_flowtype = M_HASHTYPE_OPAQUE;
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error = udp_newudpcb(inp);
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if (error) {
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in_pcbdetach(inp);
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in_pcbfree(inp);
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return (error);
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}
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up = intoudpcb(inp);
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bzero(&up->u_start_zero, u_zero_size);
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INP_WUNLOCK(inp);
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return (0);
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@ -1636,19 +1605,14 @@ static void
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udp_detach(struct socket *so)
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{
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struct inpcb *inp;
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struct udpcb *up;
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inp = sotoinpcb(so);
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KASSERT(inp != NULL, ("udp_detach: inp == NULL"));
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KASSERT(inp->inp_faddr.s_addr == INADDR_ANY,
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("udp_detach: not disconnected"));
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INP_WLOCK(inp);
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up = intoudpcb(inp);
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KASSERT(up != NULL, ("%s: up == NULL", __func__));
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inp->inp_ppcb = NULL;
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in_pcbdetach(inp);
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in_pcbfree(inp);
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udp_discardcb(up);
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}
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pr_disconnect_t udp_disconnect; /* shared with udp6_usrreq.c */
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@ -110,6 +110,10 @@ typedef void udp_tun_icmp_t(udp_tun_icmp_param_t);
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* UDP control block; one per udp.
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*/
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struct udpcb {
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struct inpcb u_inpcb;
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#define u_start_zero u_tun_func
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#define u_zero_size (sizeof(struct udpcb) - \
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offsetof(struct udpcb, u_start_zero))
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udp_tun_func_t *u_tun_func; /* UDP kernel tunneling callback. */
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udp_tun_icmp_t *u_icmp_func; /* UDP kernel tunneling icmp callback */
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u_int u_flags; /* Generic UDP flags. */
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@ -118,7 +122,7 @@ struct udpcb {
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void *u_tun_ctx; /* Tunneling callback context. */
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};
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#define intoudpcb(ip) ((struct udpcb *)(ip)->inp_ppcb)
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#define intoudpcb(ip) __containerof((inp), struct udpcb, u_inpcb)
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#define sotoudpcb(so) (intoudpcb(sotoinpcb(so)))
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VNET_PCPUSTAT_DECLARE(struct udpstat, udpstat);
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@ -164,9 +168,6 @@ udp_get_inpcbinfo(int protocol)
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return (protocol == IPPROTO_UDP) ? &V_udbinfo : &V_ulitecbinfo;
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}
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int udp_newudpcb(struct inpcb *);
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void udp_discardcb(struct udpcb *);
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int udp_ctloutput(struct socket *, struct sockopt *);
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void udplite_input(struct mbuf *, int);
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struct inpcb *udp_notify(struct inpcb *inp, int errno);
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@ -1005,13 +1005,6 @@ udp6_attach(struct socket *so, int proto, struct thread *td)
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* which may match an IPv4-mapped IPv6 address.
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*/
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inp->inp_ip_ttl = V_ip_defttl;
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error = udp_newudpcb(inp);
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if (error) {
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in_pcbdetach(inp);
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in_pcbfree(inp);
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return (error);
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}
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INP_WUNLOCK(inp);
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return (0);
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}
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@ -1213,7 +1206,6 @@ udp6_detach(struct socket *so)
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KASSERT(up != NULL, ("%s: up == NULL", __func__));
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in_pcbdetach(inp);
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in_pcbfree(inp);
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udp_discardcb(up);
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}
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static int
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