microsoft
/
WSL2-Linux-Kernel
зеркало из https://github.com/microsoft/WSL2-Linux-Kernel.git
1
0
Форкнуть 0
Код Задачи Пакеты Проекты Релизы Вики Активность

RxRPC rewrite 

-----BEGIN PGP SIGNATURE-----
 
 iQIVAwUAV9h/5PSw1s6N8H32AQLJCQ//RFbu0SNSoJnnZbOTwkxBaGYnGg4KbNVt
 iR4zumQfFssyYr7WcH1S6kuPzM/dJfjkRYqollyUGCEfnWyDwyfnjM9Na9PQoZ9F
 k7xnbim8N65njHLdGF6QMhenmoRXSBVCN2E0uPTbBXurFHJ8ZgQQs+DhogalvGUl
 2TL/aMdpqRoo1Vg0/APVOKeLGqgHEhrXxelTZB/74IXyYT+rzjfzu+ZfwxUAijsM
 d+FBSwY+D8RYSV4LXQzMNNFCwNORbG2Rse2nEqd7bVqdVywWsuhbgeESjx1Y3+ge
 /mofVyxrpoblT9qsScbISbIQEe6cLxRiQgQHEudennRI2/3EbpNSijhNFWVon2Em
 NAa7r+tfOPtVx5JTL9NyvwtrXPfAgDi7Stpml3Yhhr/CjRHYK9kfKysowMXL5vOz
 NHD0fUozNLecpGCmdxG+alwf5BJ5q9DRPP7bI7KE/4FfVsYe8bO6pQ9G+myeP/A4
 h8DuvK4xSJUEpEa5dpDLA1wSC2XH5PgYdXIr2DFBaFjllIdf1cGNKKIYRF2eIX/I
 obVD7c72oZV1kIK3URTLJpE+CdA4KgTFuL3YqIxquA2Iedb1t2uOrQcp4WwaWf7V
 REY9KbBn1F0+yJfO3Fjckerzle+MlAmrAHQpkZUduo5JzdRm3DY++YzswXQT5Fpr
 8S3T30nwY0k=
 =T1wh
 -----END PGP SIGNATURE-----

Merge tag 'rxrpc-rewrite-20160913-2' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs

David Howells says:

====================
rxrpc: Support IPv6

Here is a set of patches that add IPv6 support.  They need to be applied on
top of the just-posted miscellaneous fix patches.  They are:

 (1) Make autobinding of an unconnected socket work when sendmsg() is
     called to initiate a client call.

 (2) Don't specify the protocol when creating the client socket, but rather
     take the default instead.

 (3) Use rxrpc_extract_addr_from_skb() in a couple of places that were
     doing the same thing manually.  This allows the IPv6 address
     extraction to be done in fewer places.

 (4) Add IPv6 support.  With this, calls can be made to IPv6 servers from
     userspace AF_RXRPC programs; AFS, however, can't use IPv6 yet as the
     RPC calls need to be upgradeable.
====================

Reviewed-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller 2016-09-16 01:57:19 -04:00
Родитель 39caa8bf6d 75b54cb57c
Коммит 364eac0c8b
8 изменённых файлов: 179 добавлений и 119 удалений
Показать статистику Скачать Patch файл Скачать Diff файл Показать все файлы Свернуть все файлы

27
net/rxrpc/af_rxrpc.c
Просмотреть файл

@ -106,19 +106,23 @@ static int rxrpc_validate_address(struct rxrpc_sock *rx,
case AF_INET:
if (srx->transport_len < sizeof(struct sockaddr_in))
return -EINVAL;
_debug("INET: %x @ %pI4",
ntohs(srx->transport.sin.sin_port),
&srx->transport.sin.sin_addr);
tail = offsetof(struct sockaddr_rxrpc, transport.sin.__pad);
break;
case AF_INET6:
if (srx->transport_len < sizeof(struct sockaddr_in6))
return -EINVAL;
tail = offsetof(struct sockaddr_rxrpc, transport) +
sizeof(struct sockaddr_in6);
break;
default:
return -EAFNOSUPPORT;
}
if (tail < len)
memset((void *)srx + tail, 0, len - tail);
_debug("INET: %pISp", &srx->transport);
return 0;
}
@ -401,6 +405,21 @@ static int rxrpc_sendmsg(struct socket *sock, struct msghdr *m, size_t len)
switch (rx->sk.sk_state) {
case RXRPC_UNBOUND:
rx->srx.srx_family = AF_RXRPC;
rx->srx.srx_service = 0;
rx->srx.transport_type = SOCK_DGRAM;
rx->srx.transport.family = rx->family;
switch (rx->family) {
case AF_INET:
rx->srx.transport_len = sizeof(struct sockaddr_in);
break;
case AF_INET6:
rx->srx.transport_len = sizeof(struct sockaddr_in6);
break;
default:
ret = -EAFNOSUPPORT;
goto error_unlock;
}
local = rxrpc_lookup_local(&rx->srx);
if (IS_ERR(local)) {
ret = PTR_ERR(local);
@ -551,7 +570,7 @@ static int rxrpc_create(struct net *net, struct socket *sock, int protocol,
return -EAFNOSUPPORT;
/* we support transport protocol UDP/UDP6 only */
if (protocol != PF_INET)
if (protocol != PF_INET && protocol != PF_INET6)
return -EPROTONOSUPPORT;
if (sock->type != SOCK_DGRAM)

8
net/rxrpc/conn_object.c
Просмотреть файл

@ -134,6 +134,14 @@ struct rxrpc_connection *rxrpc_find_connection_rcu(struct rxrpc_local *local,
srx.transport.sin.sin_addr.s_addr)
goto not_found;
break;
case AF_INET6:
if (peer->srx.transport.sin6.sin6_port !=
srx.transport.sin6.sin6_port ||
memcmp(&peer->srx.transport.sin6.sin6_addr,
&srx.transport.sin6.sin6_addr,
sizeof(struct in6_addr)) != 0)
goto not_found;
break;
default:
BUG();
}

13
net/rxrpc/local_event.c
Просмотреть файл

@ -15,8 +15,6 @@
#include <linux/net.h>
#include <linux/skbuff.h>
#include <linux/slab.h>
#include <linux/udp.h>
#include <linux/ip.h>
#include <net/sock.h>
#include <net/af_rxrpc.h>
#include <generated/utsrelease.h>
@ -33,7 +31,7 @@ static void rxrpc_send_version_request(struct rxrpc_local *local,
{
struct rxrpc_wire_header whdr;
struct rxrpc_skb_priv *sp = rxrpc_skb(skb);
struct sockaddr_in sin;
struct sockaddr_rxrpc srx;
struct msghdr msg;
struct kvec iov[2];
size_t len;
@ -41,12 +39,11 @@ static void rxrpc_send_version_request(struct rxrpc_local *local,
_enter("");
sin.sin_family = AF_INET;
sin.sin_port = udp_hdr(skb)->source;
sin.sin_addr.s_addr = ip_hdr(skb)->saddr;
if (rxrpc_extract_addr_from_skb(&srx, skb) < 0)
return;
msg.msg_name = &sin;
msg.msg_namelen = sizeof(sin);
msg.msg_name = &srx.transport;
msg.msg_namelen = srx.transport_len;
msg.msg_control = NULL;
msg.msg_controllen = 0;
msg.msg_flags = 0;

39
net/rxrpc/local_object.c
Просмотреть файл

@ -58,6 +58,15 @@ static long rxrpc_local_cmp_key(const struct rxrpc_local *local,
memcmp(&local->srx.transport.sin.sin_addr,
&srx->transport.sin.sin_addr,
sizeof(struct in_addr));
case AF_INET6:
/* If the choice of UDP6 port is left up to the transport, then
* the endpoint record doesn't match.
*/
return ((u16 __force)local->srx.transport.sin6.sin6_port -
(u16 __force)srx->transport.sin6.sin6_port) ?:
memcmp(&local->srx.transport.sin6.sin6_addr,
&srx->transport.sin6.sin6_addr,
sizeof(struct in6_addr));
default:
BUG();
}
@ -100,11 +109,12 @@ static int rxrpc_open_socket(struct rxrpc_local *local)
struct sock *sock;
int ret, opt;
_enter("%p{%d}", local, local->srx.transport_type);
_enter("%p{%d,%d}",
local, local->srx.transport_type, local->srx.transport.family);
/* create a socket to represent the local endpoint */
ret = sock_create_kern(&init_net, PF_INET, local->srx.transport_type,
IPPROTO_UDP, &local->socket);
ret = sock_create_kern(&init_net, local->srx.transport.family,
local->srx.transport_type, 0, &local->socket);
if (ret < 0) {
_leave(" = %d [socket]", ret);
return ret;
@ -169,18 +179,8 @@ struct rxrpc_local *rxrpc_lookup_local(const struct sockaddr_rxrpc *srx)
long diff;
int ret;
if (srx->transport.family == AF_INET) {
_enter("{%d,%u,%pI4+%hu}",
srx->transport_type,
srx->transport.family,
&srx->transport.sin.sin_addr,
ntohs(srx->transport.sin.sin_port));
} else {
_enter("{%d,%u}",
srx->transport_type,
srx->transport.family);
return ERR_PTR(-EAFNOSUPPORT);
}
_enter("{%d,%d,%pISp}",
srx->transport_type, srx->transport.family, &srx->transport);
mutex_lock(&rxrpc_local_mutex);
@ -233,13 +233,8 @@ struct rxrpc_local *rxrpc_lookup_local(const struct sockaddr_rxrpc *srx)
found:
mutex_unlock(&rxrpc_local_mutex);
_net("LOCAL %s %d {%d,%u,%pI4+%hu}",
age,
local->debug_id,
local->srx.transport_type,
local->srx.transport.family,
&local->srx.transport.sin.sin_addr,
ntohs(local->srx.transport.sin.sin_port));
_net("LOCAL %s %d {%pISp}",
age, local->debug_id, &local->srx.transport);
_leave(" = %p", local);
return local;

48
net/rxrpc/output.c
Просмотреть файл

@ -15,8 +15,6 @@
#include <linux/gfp.h>
#include <linux/skbuff.h>
#include <linux/export.h>
#include <linux/udp.h>
#include <linux/ip.h>
#include <net/sock.h>
#include <net/af_rxrpc.h>
#include "ar-internal.h"
@ -260,6 +258,22 @@ send_fragmentable:
(char *)&opt, sizeof(opt));
}
break;
case AF_INET6:
opt = IPV6_PMTUDISC_DONT;
ret = kernel_setsockopt(conn->params.local->socket,
SOL_IPV6, IPV6_MTU_DISCOVER,
(char *)&opt, sizeof(opt));
if (ret == 0) {
ret = kernel_sendmsg(conn->params.local->socket, &msg,
iov, 1, iov[0].iov_len);
opt = IPV6_PMTUDISC_DO;
kernel_setsockopt(conn->params.local->socket,
SOL_IPV6, IPV6_MTU_DISCOVER,
(char *)&opt, sizeof(opt));
}
break;
}
up_write(&conn->params.local->defrag_sem);
@ -272,10 +286,7 @@ send_fragmentable:
*/
void rxrpc_reject_packets(struct rxrpc_local *local)
{
union {
struct sockaddr sa;
struct sockaddr_in sin;
} sa;
struct sockaddr_rxrpc srx;
struct rxrpc_skb_priv *sp;
struct rxrpc_wire_header whdr;
struct sk_buff *skb;
@ -292,32 +303,21 @@ void rxrpc_reject_packets(struct rxrpc_local *local)
iov[1].iov_len = sizeof(code);
size = sizeof(whdr) + sizeof(code);
msg.msg_name = &sa;
msg.msg_name = &srx.transport;
msg.msg_control = NULL;
msg.msg_controllen = 0;
msg.msg_flags = 0;
memset(&sa, 0, sizeof(sa));
sa.sa.sa_family = local->srx.transport.family;
switch (sa.sa.sa_family) {
case AF_INET:
msg.msg_namelen = sizeof(sa.sin);
break;
default:
msg.msg_namelen = 0;
break;
}
memset(&whdr, 0, sizeof(whdr));
whdr.type = RXRPC_PACKET_TYPE_ABORT;
while ((skb = skb_dequeue(&local->reject_queue))) {
rxrpc_see_skb(skb);
sp = rxrpc_skb(skb);
switch (sa.sa.sa_family) {
case AF_INET:
sa.sin.sin_port = udp_hdr(skb)->source;
sa.sin.sin_addr.s_addr = ip_hdr(skb)->saddr;
if (rxrpc_extract_addr_from_skb(&srx, skb) == 0) {
msg.msg_namelen = srx.transport_len;
code = htonl(skb->priority);
whdr.epoch = htonl(sp->hdr.epoch);
@ -329,10 +329,6 @@ void rxrpc_reject_packets(struct rxrpc_local *local)
whdr.flags &= RXRPC_CLIENT_INITIATED;
kernel_sendmsg(local->socket, &msg, iov, 2, size);
break;
default:
break;
}
rxrpc_free_skb(skb);

24
net/rxrpc/peer_event.c
Просмотреть файл

@ -66,6 +66,30 @@ static struct rxrpc_peer *rxrpc_lookup_peer_icmp_rcu(struct rxrpc_local *local,
}
break;
case AF_INET6:
srx.transport.sin6.sin6_port = serr->port;
srx.transport_len = sizeof(struct sockaddr_in6);
switch (serr->ee.ee_origin) {
case SO_EE_ORIGIN_ICMP6:
_net("Rx ICMP6");
memcpy(&srx.transport.sin6.sin6_addr,
skb_network_header(skb) + serr->addr_offset,
sizeof(struct in6_addr));
break;
case SO_EE_ORIGIN_ICMP:
_net("Rx ICMP on v6 sock");
memcpy(&srx.transport.sin6.sin6_addr.s6_addr + 12,
skb_network_header(skb) + serr->addr_offset,
sizeof(struct in_addr));
break;
default:
memcpy(&srx.transport.sin6.sin6_addr,
&ipv6_hdr(skb)->saddr,
sizeof(struct in6_addr));
break;
}
break;
default:
BUG();
}

109
net/rxrpc/peer_object.c
Просмотреть файл

@ -16,12 +16,14 @@
#include <linux/skbuff.h>
#include <linux/udp.h>
#include <linux/in.h>
#include <linux/in6.h>
#include <linux/slab.h>
#include <linux/hashtable.h>
#include <net/sock.h>
#include <net/af_rxrpc.h>
#include <net/ip.h>
#include <net/route.h>
#include <net/ip6_route.h>
#include "ar-internal.h"
static DEFINE_HASHTABLE(rxrpc_peer_hash, 10);
@ -50,6 +52,11 @@ static unsigned long rxrpc_peer_hash_key(struct rxrpc_local *local,
size = sizeof(srx->transport.sin.sin_addr);
p = (u16 *)&srx->transport.sin.sin_addr;
break;
case AF_INET6:
hash_key += (u16 __force)srx->transport.sin.sin_port;
size = sizeof(srx->transport.sin6.sin6_addr);
p = (u16 *)&srx->transport.sin6.sin6_addr;
break;
default:
WARN(1, "AF_RXRPC: Unsupported transport address family\n");
return 0;
@ -93,6 +100,12 @@ static long rxrpc_peer_cmp_key(const struct rxrpc_peer *peer,
memcmp(&peer->srx.transport.sin.sin_addr,
&srx->transport.sin.sin_addr,
sizeof(struct in_addr));
case AF_INET6:
return ((u16 __force)peer->srx.transport.sin6.sin6_port -
(u16 __force)srx->transport.sin6.sin6_port) ?:
memcmp(&peer->srx.transport.sin6.sin6_addr,
&srx->transport.sin6.sin6_addr,
sizeof(struct in6_addr));
default:
BUG();
}
@ -130,17 +143,7 @@ struct rxrpc_peer *rxrpc_lookup_peer_rcu(struct rxrpc_local *local,
peer = __rxrpc_lookup_peer_rcu(local, srx, hash_key);
if (peer) {
switch (srx->transport.family) {
case AF_INET:
_net("PEER %d {%d,%u,%pI4+%hu}",
peer->debug_id,
peer->srx.transport_type,
peer->srx.transport.family,
&peer->srx.transport.sin.sin_addr,
ntohs(peer->srx.transport.sin.sin_port));
break;
}
_net("PEER %d {%pISp}", peer->debug_id, &peer->srx.transport);
_leave(" = %p {u=%d}", peer, atomic_read(&peer->usage));
}
return peer;
@ -152,22 +155,49 @@ struct rxrpc_peer *rxrpc_lookup_peer_rcu(struct rxrpc_local *local,
*/
static void rxrpc_assess_MTU_size(struct rxrpc_peer *peer)
{
struct dst_entry *dst;
struct rtable *rt;
struct flowi4 fl4;
struct flowi fl;
struct flowi4 *fl4 = &fl.u.ip4;
struct flowi6 *fl6 = &fl.u.ip6;
peer->if_mtu = 1500;
rt = ip_route_output_ports(&init_net, &fl4, NULL,
peer->srx.transport.sin.sin_addr.s_addr, 0,
htons(7000), htons(7001),
IPPROTO_UDP, 0, 0);
if (IS_ERR(rt)) {
_leave(" [route err %ld]", PTR_ERR(rt));
return;
memset(&fl, 0, sizeof(fl));
switch (peer->srx.transport.family) {
case AF_INET:
rt = ip_route_output_ports(
&init_net, fl4, NULL,
peer->srx.transport.sin.sin_addr.s_addr, 0,
htons(7000), htons(7001), IPPROTO_UDP, 0, 0);
if (IS_ERR(rt)) {
_leave(" [route err %ld]", PTR_ERR(rt));
return;
}
dst = &rt->dst;
break;
case AF_INET6:
fl6->flowi6_iif = LOOPBACK_IFINDEX;
fl6->flowi6_scope = RT_SCOPE_UNIVERSE;
fl6->flowi6_proto = IPPROTO_UDP;
memcpy(&fl6->daddr, &peer->srx.transport.sin6.sin6_addr,
sizeof(struct in6_addr));
fl6->fl6_dport = htons(7001);
fl6->fl6_sport = htons(7000);
dst = ip6_route_output(&init_net, NULL, fl6);
if (IS_ERR(dst)) {
_leave(" [route err %ld]", PTR_ERR(dst));
return;
}
break;
default:
BUG();
}
peer->if_mtu = dst_mtu(&rt->dst);
dst_release(&rt->dst);
peer->if_mtu = dst_mtu(dst);
dst_release(dst);
_leave(" [if_mtu %u]", peer->if_mtu);
}
@ -207,17 +237,22 @@ static void rxrpc_init_peer(struct rxrpc_peer *peer, unsigned long hash_key)
rxrpc_assess_MTU_size(peer);
peer->mtu = peer->if_mtu;
if (peer->srx.transport.family == AF_INET) {
switch (peer->srx.transport.family) {
case AF_INET:
peer->hdrsize = sizeof(struct iphdr);
switch (peer->srx.transport_type) {
case SOCK_DGRAM:
peer->hdrsize += sizeof(struct udphdr);
break;
default:
BUG();
break;
}
} else {
break;
case AF_INET6:
peer->hdrsize = sizeof(struct ipv6hdr);
break;
default:
BUG();
}
switch (peer->srx.transport_type) {
case SOCK_DGRAM:
peer->hdrsize += sizeof(struct udphdr);
break;
default:
BUG();
}
@ -285,11 +320,7 @@ struct rxrpc_peer *rxrpc_lookup_peer(struct rxrpc_local *local,
struct rxrpc_peer *peer, *candidate;
unsigned long hash_key = rxrpc_peer_hash_key(local, srx);
_enter("{%d,%d,%pI4+%hu}",
srx->transport_type,
srx->transport_len,
&srx->transport.sin.sin_addr,
ntohs(srx->transport.sin.sin_port));
_enter("{%pISp}", &srx->transport);
/* search the peer list first */
rcu_read_lock();
@ -326,11 +357,7 @@ struct rxrpc_peer *rxrpc_lookup_peer(struct rxrpc_local *local,
peer = candidate;
}
_net("PEER %d {%d,%pI4+%hu}",
peer->debug_id,
peer->srx.transport_type,
&peer->srx.transport.sin.sin_addr,
ntohs(peer->srx.transport.sin.sin_port));
_net("PEER %d {%pISp}", peer->debug_id, &peer->srx.transport);
_leave(" = %p {u=%d}", peer, atomic_read(&peer->usage));
return peer;

30
net/rxrpc/proc.c
Просмотреть файл

@ -52,11 +52,12 @@ static int rxrpc_call_seq_show(struct seq_file *seq, void *v)
struct rxrpc_sock *rx;
struct rxrpc_peer *peer;
struct rxrpc_call *call;
char lbuff[4 + 4 + 4 + 4 + 5 + 1], rbuff[4 + 4 + 4 + 4 + 5 + 1];
char lbuff[50], rbuff[50];
if (v == &rxrpc_calls) {
seq_puts(seq,
"Proto Local Remote "
"Proto Local "
" Remote "
" SvID ConnID CallID End Use State Abort "
" UserID\n");
return 0;
@ -68,9 +69,7 @@ static int rxrpc_call_seq_show(struct seq_file *seq, void *v)
if (rx) {
local = READ_ONCE(rx->local);
if (local)
sprintf(lbuff, "%pI4:%u",
&local->srx.transport.sin.sin_addr,
ntohs(local->srx.transport.sin.sin_port));
sprintf(lbuff, "%pISpc", &local->srx.transport);
else
strcpy(lbuff, "no_local");
} else {
@ -79,14 +78,12 @@ static int rxrpc_call_seq_show(struct seq_file *seq, void *v)
peer = call->peer;
if (peer)
sprintf(rbuff, "%pI4:%u",
&peer->srx.transport.sin.sin_addr,
ntohs(peer->srx.transport.sin.sin_port));
sprintf(rbuff, "%pISpc", &peer->srx.transport);
else
strcpy(rbuff, "no_connection");
seq_printf(seq,
"UDP %-22.22s %-22.22s %4x %08x %08x %s %3u"
"UDP %-47.47s %-47.47s %4x %08x %08x %s %3u"
" %-8.8s %08x %lx\n",
lbuff,
rbuff,
@ -145,11 +142,12 @@ static void rxrpc_connection_seq_stop(struct seq_file *seq, void *v)
static int rxrpc_connection_seq_show(struct seq_file *seq, void *v)
{
struct rxrpc_connection *conn;
char lbuff[4 + 4 + 4 + 4 + 5 + 1], rbuff[4 + 4 + 4 + 4 + 5 + 1];
char lbuff[50], rbuff[50];
if (v == &rxrpc_connection_proc_list) {
seq_puts(seq,
"Proto Local Remote "
"Proto Local "
" Remote "
" SvID ConnID End Use State Key "
" Serial ISerial\n"
);
@ -163,16 +161,12 @@ static int rxrpc_connection_seq_show(struct seq_file *seq, void *v)
goto print;
}
sprintf(lbuff, "%pI4:%u",
&conn->params.local->srx.transport.sin.sin_addr,
ntohs(conn->params.local->srx.transport.sin.sin_port));
sprintf(lbuff, "%pISpc", &conn->params.local->srx.transport);
sprintf(rbuff, "%pI4:%u",
&conn->params.peer->srx.transport.sin.sin_addr,
ntohs(conn->params.peer->srx.transport.sin.sin_port));
sprintf(rbuff, "%pISpc", &conn->params.peer->srx.transport);
print:
seq_printf(seq,
"UDP %-22.22s %-22.22s %4x %08x %s %3u"
"UDP %-47.47s %-47.47s %4x %08x %s %3u"
" %s %08x %08x %08x\n",
lbuff,
rbuff,