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rxrpc: Make rxrpc_send_packet() take a connection not a transport 

Make rxrpc_send_packet() take a connection not a transport as part of the
phasing out of the rxrpc_transport struct.

Whilst we're at it, rename the function to rxrpc_send_data_packet() to
differentiate it from the other packet sending functions.

Signed-off-by: David Howells <dhowells@redhat.com>
This commit is contained in:
David Howells 2016-06-17 11:53:37 +01:00
parent f4e7da8cde
commit 985a5c824a
3 changed files with 30 additions and 23 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
net/rxrpc/ar-internal.h
View File

@ -670,7 +670,7 @@ extern const char *rxrpc_acks(u8 reason);
*/
extern unsigned int rxrpc_resend_timeout;
int rxrpc_send_packet(struct rxrpc_transport *, struct sk_buff *);
int rxrpc_send_data_packet(struct rxrpc_connection *, struct sk_buff *);
int rxrpc_do_sendmsg(struct rxrpc_sock *, struct msghdr *, size_t);
/*

2
net/rxrpc/call_event.c
View File

@ -187,7 +187,7 @@ static void rxrpc_resend(struct rxrpc_call *call)
_proto("Tx DATA %%%u { #%d }",
sp->hdr.serial, sp->hdr.seq);
if (rxrpc_send_packet(call->conn->trans, txb) < 0) {
if (rxrpc_send_data_packet(call->conn, txb) < 0) {
stop = true;
sp->resend_at = jiffies + 3;
} else {

49
net/rxrpc/output.c
View File

@ -338,7 +338,7 @@ EXPORT_SYMBOL(rxrpc_kernel_abort_call);
/*
* send a packet through the transport endpoint
*/
int rxrpc_send_packet(struct rxrpc_transport *trans, struct sk_buff *skb)
int rxrpc_send_data_packet(struct rxrpc_connection *conn, struct sk_buff *skb)
{
struct kvec iov[1];
struct msghdr msg;
@ -349,30 +349,30 @@ int rxrpc_send_packet(struct rxrpc_transport *trans, struct sk_buff *skb)
iov[0].iov_base = skb->head;
iov[0].iov_len = skb->len;
msg.msg_name = &trans->peer->srx.transport.sin;
msg.msg_namelen = sizeof(trans->peer->srx.transport.sin);
msg.msg_name = &conn->params.peer->srx.transport;
msg.msg_namelen = conn->params.peer->srx.transport_len;
msg.msg_control = NULL;
msg.msg_controllen = 0;
msg.msg_flags = 0;
/* send the packet with the don't fragment bit set if we currently
* think it's small enough */
if (skb->len - sizeof(struct rxrpc_wire_header) < trans->peer->maxdata) {
down_read(&trans->local->defrag_sem);
if (skb->len - sizeof(struct rxrpc_wire_header) < conn->params.peer->maxdata) {
down_read(&conn->params.local->defrag_sem);
/* send the packet by UDP
* - returns -EMSGSIZE if UDP would have to fragment the packet
* to go out of the interface
* - in which case, we'll have processed the ICMP error
* message and update the peer record
*/
ret = kernel_sendmsg(trans->local->socket, &msg, iov, 1,
ret = kernel_sendmsg(conn->params.local->socket, &msg, iov, 1,
iov[0].iov_len);
up_read(&trans->local->defrag_sem);
up_read(&conn->params.local->defrag_sem);
if (ret == -EMSGSIZE)
goto send_fragmentable;
_leave(" = %d [%u]", ret, trans->peer->maxdata);
_leave(" = %d [%u]", ret, conn->params.peer->maxdata);
return ret;
}
@ -380,21 +380,28 @@ int rxrpc_send_packet(struct rxrpc_transport *trans, struct sk_buff *skb)
/* attempt to send this message with fragmentation enabled */
_debug("send fragment");
down_write(&trans->local->defrag_sem);
opt = IP_PMTUDISC_DONT;
ret = kernel_setsockopt(trans->local->socket, SOL_IP, IP_MTU_DISCOVER,
(char *) &opt, sizeof(opt));
if (ret == 0) {
ret = kernel_sendmsg(trans->local->socket, &msg, iov, 1,
iov[0].iov_len);
down_write(&conn->params.local->defrag_sem);
opt = IP_PMTUDISC_DO;
kernel_setsockopt(trans->local->socket, SOL_IP,
IP_MTU_DISCOVER, (char *) &opt, sizeof(opt));
switch (conn->params.local->srx.transport.family) {
case AF_INET:
opt = IP_PMTUDISC_DONT;
ret = kernel_setsockopt(conn->params.local->socket,
SOL_IP, IP_MTU_DISCOVER,
(char *)&opt, sizeof(opt));
if (ret == 0) {
ret = kernel_sendmsg(conn->params.local->socket, &msg, iov, 1,
iov[0].iov_len);
opt = IP_PMTUDISC_DO;
kernel_setsockopt(conn->params.local->socket, SOL_IP,
IP_MTU_DISCOVER,
(char *)&opt, sizeof(opt));
}
break;
}
up_write(&trans->local->defrag_sem);
_leave(" = %d [frag %u]", ret, trans->peer->maxdata);
up_write(&conn->params.local->defrag_sem);
_leave(" = %d [frag %u]", ret, conn->params.peer->maxdata);
return ret;
}
@ -506,7 +513,7 @@ static void rxrpc_queue_packet(struct rxrpc_call *call, struct sk_buff *skb,
if (try_to_del_timer_sync(&call->ack_timer) >= 0) {
/* the packet may be freed by rxrpc_process_call() before this
* returns */
ret = rxrpc_send_packet(call->conn->trans, skb);
ret = rxrpc_send_data_packet(call->conn, skb);
_net("sent skb %p", skb);
} else {
_debug("failed to delete ACK timer");