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Date: Wed, 22 Jun 2016 17:04:10 +0100
From: David Howells <dhowells@...hat.com>
To: davem@...emloft.net
Cc: dhowells@...hat.com, netdev@...r.kernel.org,
linux-afs@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: [PATCH net-next 11/14] rxrpc: Make rxrpc_send_packet() take a
connection not a transport [ver #2]
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@...hat.com>
---
net/rxrpc/ar-internal.h | 2 +-
net/rxrpc/call_event.c | 2 +-
net/rxrpc/output.c | 51 +++++++++++++++++++++++++++--------------------
3 files changed, 31 insertions(+), 24 deletions(-)
diff --git a/net/rxrpc/ar-internal.h b/net/rxrpc/ar-internal.h
index 89966508b26c..cfbd028aa551 100644
--- a/net/rxrpc/ar-internal.h
+++ b/net/rxrpc/ar-internal.h
@@ -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);
/*
diff --git a/net/rxrpc/call_event.c b/net/rxrpc/call_event.c
index b43faf573ed3..0ba84295f913 100644
--- a/net/rxrpc/call_event.c
+++ b/net/rxrpc/call_event.c
@@ -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 {
diff --git a/net/rxrpc/output.c b/net/rxrpc/output.c
index 6f8ab0ef839f..db3933cf6b97 100644
--- a/net/rxrpc/output.c
+++ b/net/rxrpc/output.c
@@ -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 @@ send_fragmentable:
/* 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);
-
- opt = IP_PMTUDISC_DO;
- kernel_setsockopt(trans->local->socket, SOL_IP,
- IP_MTU_DISCOVER, (char *) &opt, sizeof(opt));
+ down_write(&conn->params.local->defrag_sem);
+
+ 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");
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