rxrpc: Call udp_sendmsg() directly
Call udp_sendmsg() and udpv6_sendmsg() directly rather than calling kernel_sendmsg() as the latter assumes we want a kvec-class iterator. However, zerocopy explicitly doesn't work with such an iterator. Signed-off-by: David Howells <dhowells@redhat.com> cc: Marc Dionne <marc.dionne@auristor.com> cc: linux-afs@lists.infradead.org
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parent
b6c66c4324
commit
ed472b0c87
2 changed files with 28 additions and 10 deletions
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@ -1639,6 +1639,7 @@ do_confirm:
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err = 0;
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goto out;
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}
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EXPORT_SYMBOL(udpv6_sendmsg);
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void udpv6_destroy_sock(struct sock *sk)
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{
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@ -13,6 +13,7 @@
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#include <linux/export.h>
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#include <net/sock.h>
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#include <net/af_rxrpc.h>
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#include <net/udp.h>
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#include "ar-internal.h"
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struct rxrpc_ack_buffer {
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@ -23,6 +24,19 @@ struct rxrpc_ack_buffer {
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struct rxrpc_ackinfo ackinfo;
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};
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extern int udpv6_sendmsg(struct sock *sk, struct msghdr *msg, size_t len);
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static ssize_t do_udp_sendmsg(struct socket *sk, struct msghdr *msg, size_t len)
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{
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#if IS_ENABLED(CONFIG_AF_RXRPC_IPV6)
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struct sockaddr *sa = msg->msg_name;
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if (sa->sa_family == AF_INET6)
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return udpv6_sendmsg(sk->sk, msg, len);
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#endif
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return udp_sendmsg(sk->sk, msg, len);
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}
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struct rxrpc_abort_buffer {
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struct rxrpc_wire_header whdr;
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__be32 abort_code;
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@ -258,8 +272,10 @@ int rxrpc_send_ack_packet(struct rxrpc_call *call, bool ping,
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rtt_slot = rxrpc_begin_rtt_probe(call, serial, rxrpc_rtt_tx_ping);
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rxrpc_inc_stat(call->rxnet, stat_tx_ack_send);
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ret = kernel_sendmsg(conn->params.local->socket, &msg, iov, 2, len);
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conn->params.peer->last_tx_at = ktime_get_seconds();
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iov_iter_kvec(&msg.msg_iter, WRITE, iov, 2, len);
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ret = do_udp_sendmsg(conn->params.local->socket, &msg, len);
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call->peer->last_tx_at = ktime_get_seconds();
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if (ret < 0)
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trace_rxrpc_tx_fail(call->debug_id, serial, ret,
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rxrpc_tx_point_call_ack);
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@ -336,8 +352,8 @@ int rxrpc_send_abort_packet(struct rxrpc_call *call)
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serial = atomic_inc_return(&conn->serial);
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pkt.whdr.serial = htonl(serial);
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ret = kernel_sendmsg(conn->params.local->socket,
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&msg, iov, 1, sizeof(pkt));
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iov_iter_kvec(&msg.msg_iter, WRITE, iov, 1, sizeof(pkt));
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ret = do_udp_sendmsg(conn->params.local->socket, &msg, sizeof(pkt));
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conn->params.peer->last_tx_at = ktime_get_seconds();
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if (ret < 0)
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trace_rxrpc_tx_fail(call->debug_id, serial, ret,
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@ -397,6 +413,7 @@ int rxrpc_send_data_packet(struct rxrpc_call *call, struct sk_buff *skb,
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iov[1].iov_base = skb->head;
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iov[1].iov_len = skb->len;
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len = iov[0].iov_len + iov[1].iov_len;
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iov_iter_kvec(&msg.msg_iter, WRITE, iov, 2, len);
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msg.msg_name = &call->peer->srx.transport;
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msg.msg_namelen = call->peer->srx.transport_len;
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@ -469,7 +486,7 @@ dont_set_request_ack:
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* message and update the peer record
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*/
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rxrpc_inc_stat(call->rxnet, stat_tx_data_send);
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ret = kernel_sendmsg(conn->params.local->socket, &msg, iov, 2, len);
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ret = do_udp_sendmsg(conn->params.local->socket, &msg, len);
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conn->params.peer->last_tx_at = ktime_get_seconds();
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up_read(&conn->params.local->defrag_sem);
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@ -545,8 +562,7 @@ send_fragmentable:
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ip_sock_set_mtu_discover(conn->params.local->socket->sk,
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IP_PMTUDISC_DONT);
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rxrpc_inc_stat(call->rxnet, stat_tx_data_send_frag);
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ret = kernel_sendmsg(conn->params.local->socket, &msg,
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iov, 2, len);
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ret = do_udp_sendmsg(conn->params.local->socket, &msg, len);
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conn->params.peer->last_tx_at = ktime_get_seconds();
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ip_sock_set_mtu_discover(conn->params.local->socket->sk,
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@ -632,8 +648,8 @@ void rxrpc_reject_packets(struct rxrpc_local *local)
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whdr.flags ^= RXRPC_CLIENT_INITIATED;
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whdr.flags &= RXRPC_CLIENT_INITIATED;
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ret = kernel_sendmsg(local->socket, &msg,
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iov, ioc, size);
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iov_iter_kvec(&msg.msg_iter, WRITE, iov, ioc, size);
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ret = do_udp_sendmsg(local->socket, &msg, size);
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if (ret < 0)
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trace_rxrpc_tx_fail(local->debug_id, 0, ret,
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rxrpc_tx_point_reject);
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@ -688,7 +704,8 @@ void rxrpc_send_keepalive(struct rxrpc_peer *peer)
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_proto("Tx VERSION (keepalive)");
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ret = kernel_sendmsg(peer->local->socket, &msg, iov, 2, len);
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iov_iter_kvec(&msg.msg_iter, WRITE, iov, 2, len);
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ret = do_udp_sendmsg(peer->local->socket, &msg, len);
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if (ret < 0)
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trace_rxrpc_tx_fail(peer->debug_id, 0, ret,
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rxrpc_tx_point_version_keepalive);
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