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: Split the call params from the operation params 

When rxrpc_sendmsg() parses the control message buffer, it places the
parameters extracted into a structure, but lumps together call parameters
(such as user call ID) with operation parameters (such as whether to send
data, send an abort or accept a call).

Split the call parameters out into their own structure, a copy of which is
then embedded in the operation parameters struct.

The call parameters struct is then passed down into the places that need it
instead of passing the individual parameters.  This allows for extra call
parameters to be added.

Signed-off-by: David Howells <dhowells@redhat.com>
This commit is contained in:
David Howells 2017-11-24 10:18:41 +00:00
Родитель 3136ef49a1
Коммит 4812417894
4 изменённых файлов: 60 добавлений и 45 удалений
Показать статистику Скачать Patch файл Скачать Diff файл Показать все файлы Свернуть все файлы

8
net/rxrpc/af_rxrpc.c
Просмотреть файл

@ -285,6 +285,7 @@ struct rxrpc_call *rxrpc_kernel_begin_call(struct socket *sock,
bool upgrade)
{
struct rxrpc_conn_parameters cp;
struct rxrpc_call_params p;
struct rxrpc_call *call;
struct rxrpc_sock *rx = rxrpc_sk(sock->sk);
int ret;
@ -302,6 +303,10 @@ struct rxrpc_call *rxrpc_kernel_begin_call(struct socket *sock,
if (key && !key->payload.data[0])
key = NULL; /* a no-security key */
memset(&p, 0, sizeof(p));
p.user_call_ID = user_call_ID;
p.tx_total_len = tx_total_len;
memset(&cp, 0, sizeof(cp));
cp.local = rx->local;
cp.key = key;
@ -309,8 +314,7 @@ struct rxrpc_call *rxrpc_kernel_begin_call(struct socket *sock,
cp.exclusive = false;
cp.upgrade = upgrade;
cp.service_id = srx->srx_service;
call = rxrpc_new_client_call(rx, &cp, srx, user_call_ID, tx_total_len,
gfp);
call = rxrpc_new_client_call(rx, &cp, srx, &p, gfp);
/* The socket has been unlocked. */
if (!IS_ERR(call)) {
call->notify_rx = notify_rx;

31
net/rxrpc/ar-internal.h
Просмотреть файл

@ -643,6 +643,35 @@ struct rxrpc_ack_summary {
u8 cumulative_acks;
};
/*
* sendmsg() cmsg-specified parameters.
*/
enum rxrpc_command {
RXRPC_CMD_SEND_DATA, /* send data message */
RXRPC_CMD_SEND_ABORT, /* request abort generation */
RXRPC_CMD_ACCEPT, /* [server] accept incoming call */
RXRPC_CMD_REJECT_BUSY, /* [server] reject a call as busy */
};
struct rxrpc_call_params {
s64 tx_total_len; /* Total Tx data length (if send data) */
unsigned long user_call_ID; /* User's call ID */
struct {
u32 hard; /* Maximum lifetime (sec) */
u32 idle; /* Max time since last data packet (msec) */
u32 normal; /* Max time since last call packet (msec) */
} timeouts;
u8 nr_timeouts; /* Number of timeouts specified */
};
struct rxrpc_send_params {
struct rxrpc_call_params call;
u32 abort_code; /* Abort code to Tx (if abort) */
enum rxrpc_command command : 8; /* The command to implement */
bool exclusive; /* Shared or exclusive call */
bool upgrade; /* If the connection is upgradeable */
};
#include <trace/events/rxrpc.h>
/*
@ -687,7 +716,7 @@ struct rxrpc_call *rxrpc_alloc_call(struct rxrpc_sock *, gfp_t);
struct rxrpc_call *rxrpc_new_client_call(struct rxrpc_sock *,
struct rxrpc_conn_parameters *,
struct sockaddr_rxrpc *,
unsigned long, s64, gfp_t);
struct rxrpc_call_params *, gfp_t);
int rxrpc_retry_client_call(struct rxrpc_sock *,
struct rxrpc_call *,
struct rxrpc_conn_parameters *,

15
net/rxrpc/call_object.c
Просмотреть файл

@ -208,8 +208,7 @@ static void rxrpc_start_call_timer(struct rxrpc_call *call)
struct rxrpc_call *rxrpc_new_client_call(struct rxrpc_sock *rx,
struct rxrpc_conn_parameters *cp,
struct sockaddr_rxrpc *srx,
unsigned long user_call_ID,
s64 tx_total_len,
struct rxrpc_call_params *p,
gfp_t gfp)
__releases(&rx->sk.sk_lock.slock)
{
@ -219,7 +218,7 @@ struct rxrpc_call *rxrpc_new_client_call(struct rxrpc_sock *rx,
const void *here = __builtin_return_address(0);
int ret;
_enter("%p,%lx", rx, user_call_ID);
_enter("%p,%lx", rx, p->user_call_ID);
call = rxrpc_alloc_client_call(rx, srx, gfp);
if (IS_ERR(call)) {
@ -228,9 +227,9 @@ struct rxrpc_call *rxrpc_new_client_call(struct rxrpc_sock *rx,
return call;
}
call->tx_total_len = tx_total_len;
call->tx_total_len = p->tx_total_len;
trace_rxrpc_call(call, rxrpc_call_new_client, atomic_read(&call->usage),
here, (const void *)user_call_ID);
here, (const void *)p->user_call_ID);
/* We need to protect a partially set up call against the user as we
* will be acting outside the socket lock.
@ -246,16 +245,16 @@ struct rxrpc_call *rxrpc_new_client_call(struct rxrpc_sock *rx,
parent = *pp;
xcall = rb_entry(parent, struct rxrpc_call, sock_node);
if (user_call_ID < xcall->user_call_ID)
if (p->user_call_ID < xcall->user_call_ID)
pp = &(*pp)->rb_left;
else if (user_call_ID > xcall->user_call_ID)
else if (p->user_call_ID > xcall->user_call_ID)
pp = &(*pp)->rb_right;
else
goto error_dup_user_ID;
}
rcu_assign_pointer(call->socket, rx);
call->user_call_ID = user_call_ID;
call->user_call_ID = p->user_call_ID;
__set_bit(RXRPC_CALL_HAS_USERID, &call->flags);
rxrpc_get_call(call, rxrpc_call_got_userid);
rb_link_node(&call->sock_node, parent, pp);

51
net/rxrpc/sendmsg.c
Просмотреть файл

@ -21,22 +21,6 @@
#include <net/af_rxrpc.h>
#include "ar-internal.h"
enum rxrpc_command {
RXRPC_CMD_SEND_DATA, /* send data message */
RXRPC_CMD_SEND_ABORT, /* request abort generation */
RXRPC_CMD_ACCEPT, /* [server] accept incoming call */
RXRPC_CMD_REJECT_BUSY, /* [server] reject a call as busy */
};
struct rxrpc_send_params {
s64 tx_total_len; /* Total Tx data length (if send data) */
unsigned long user_call_ID; /* User's call ID */
u32 abort_code; /* Abort code to Tx (if abort) */
enum rxrpc_command command : 8; /* The command to implement */
bool exclusive; /* Shared or exclusive call */
bool upgrade; /* If the connection is upgradeable */
};
/*
* Wait for space to appear in the Tx queue or a signal to occur.
*/
@ -480,11 +464,11 @@ static int rxrpc_sendmsg_cmsg(struct msghdr *msg, struct rxrpc_send_params *p)
if (msg->msg_flags & MSG_CMSG_COMPAT) {
if (len != sizeof(u32))
return -EINVAL;
p->user_call_ID = *(u32 *)CMSG_DATA(cmsg);
p->call.user_call_ID = *(u32 *)CMSG_DATA(cmsg);
} else {
if (len != sizeof(unsigned long))
return -EINVAL;
p->user_call_ID = *(unsigned long *)
p->call.user_call_ID = *(unsigned long *)
CMSG_DATA(cmsg);
}
got_user_ID = true;
@ -522,10 +506,10 @@ static int rxrpc_sendmsg_cmsg(struct msghdr *msg, struct rxrpc_send_params *p)
break;
case RXRPC_TX_LENGTH:
if (p->tx_total_len != -1 || len != sizeof(__s64))
if (p->call.tx_total_len != -1 || len != sizeof(__s64))
return -EINVAL;
p->tx_total_len = *(__s64 *)CMSG_DATA(cmsg);
if (p->tx_total_len < 0)
p->call.tx_total_len = *(__s64 *)CMSG_DATA(cmsg);
if (p->call.tx_total_len < 0)
return -EINVAL;
break;
@ -536,7 +520,7 @@ static int rxrpc_sendmsg_cmsg(struct msghdr *msg, struct rxrpc_send_params *p)
if (!got_user_ID)
return -EINVAL;
if (p->tx_total_len != -1 && p->command != RXRPC_CMD_SEND_DATA)
if (p->call.tx_total_len != -1 && p->command != RXRPC_CMD_SEND_DATA)
return -EINVAL;
_leave(" = 0");
return 0;
@ -576,8 +560,7 @@ rxrpc_new_client_call_for_sendmsg(struct rxrpc_sock *rx, struct msghdr *msg,
cp.exclusive = rx->exclusive | p->exclusive;
cp.upgrade = p->upgrade;
cp.service_id = srx->srx_service;
call = rxrpc_new_client_call(rx, &cp, srx, p->user_call_ID,
p->tx_total_len, GFP_KERNEL);
call = rxrpc_new_client_call(rx, &cp, srx, &p->call, GFP_KERNEL);
/* The socket is now unlocked */
_leave(" = %p\n", call);
@ -597,12 +580,12 @@ int rxrpc_do_sendmsg(struct rxrpc_sock *rx, struct msghdr *msg, size_t len)
int ret;
struct rxrpc_send_params p = {
.tx_total_len = -1,
.user_call_ID = 0,
.abort_code = 0,
.command = RXRPC_CMD_SEND_DATA,
.exclusive = false,
.upgrade = false,
.call.tx_total_len = -1,
.call.user_call_ID = 0,
.abort_code = 0,
.command = RXRPC_CMD_SEND_DATA,
.exclusive = false,
.upgrade = false,
};
_enter("");
@ -615,7 +598,7 @@ int rxrpc_do_sendmsg(struct rxrpc_sock *rx, struct msghdr *msg, size_t len)
ret = -EINVAL;
if (rx->sk.sk_state != RXRPC_SERVER_LISTENING)
goto error_release_sock;
call = rxrpc_accept_call(rx, p.user_call_ID, NULL);
call = rxrpc_accept_call(rx, p.call.user_call_ID, NULL);
/* The socket is now unlocked. */
if (IS_ERR(call))
return PTR_ERR(call);
@ -623,7 +606,7 @@ int rxrpc_do_sendmsg(struct rxrpc_sock *rx, struct msghdr *msg, size_t len)
goto out_put_unlock;
}
call = rxrpc_find_call_by_user_ID(rx, p.user_call_ID);
call = rxrpc_find_call_by_user_ID(rx, p.call.user_call_ID);
if (!call) {
ret = -EBADSLT;
if (p.command != RXRPC_CMD_SEND_DATA)
@ -653,13 +636,13 @@ int rxrpc_do_sendmsg(struct rxrpc_sock *rx, struct msghdr *msg, size_t len)
goto error_put;
}
if (p.tx_total_len != -1) {
if (p.call.tx_total_len != -1) {
ret = -EINVAL;
if (call->tx_total_len != -1 ||
call->tx_pending ||
call->tx_top != 0)
goto error_put;
call->tx_total_len = p.tx_total_len;
call->tx_total_len = p.call.tx_total_len;
}
}