diff options
Diffstat (limited to 'net/rxrpc/recvmsg.c')
| -rw-r--r-- | net/rxrpc/recvmsg.c | 18 |
1 files changed, 13 insertions, 5 deletions
diff --git a/net/rxrpc/recvmsg.c b/net/rxrpc/recvmsg.c index a4090797c9b2..8578c39ec839 100644 --- a/net/rxrpc/recvmsg.c +++ b/net/rxrpc/recvmsg.c @@ -267,11 +267,13 @@ static int rxrpc_verify_packet(struct rxrpc_call *call, struct sk_buff *skb, */ static int rxrpc_locate_data(struct rxrpc_call *call, struct sk_buff *skb, u8 *_annotation, - unsigned int *_offset, unsigned int *_len) + unsigned int *_offset, unsigned int *_len, + bool *_last) { struct rxrpc_skb_priv *sp = rxrpc_skb(skb); unsigned int offset = sizeof(struct rxrpc_wire_header); unsigned int len; + bool last = false; int ret; u8 annotation = *_annotation; u8 subpacket = annotation & RXRPC_RX_ANNO_SUBPACKET; @@ -281,6 +283,8 @@ static int rxrpc_locate_data(struct rxrpc_call *call, struct sk_buff *skb, len = skb->len - offset; if (subpacket < sp->nr_subpackets - 1) len = RXRPC_JUMBO_DATALEN; + else if (sp->rx_flags & RXRPC_SKB_INCL_LAST) + last = true; if (!(annotation & RXRPC_RX_ANNO_VERIFIED)) { ret = rxrpc_verify_packet(call, skb, annotation, offset, len); @@ -291,6 +295,7 @@ static int rxrpc_locate_data(struct rxrpc_call *call, struct sk_buff *skb, *_offset = offset; *_len = len; + *_last = last; call->security->locate_data(call, skb, _offset, _len); return 0; } @@ -309,7 +314,7 @@ static int rxrpc_recvmsg_data(struct socket *sock, struct rxrpc_call *call, rxrpc_serial_t serial; rxrpc_seq_t hard_ack, top, seq; size_t remain; - bool last; + bool rx_pkt_last; unsigned int rx_pkt_offset, rx_pkt_len; int ix, copy, ret = -EAGAIN, ret2; @@ -319,6 +324,7 @@ static int rxrpc_recvmsg_data(struct socket *sock, struct rxrpc_call *call, rx_pkt_offset = call->rx_pkt_offset; rx_pkt_len = call->rx_pkt_len; + rx_pkt_last = call->rx_pkt_last; if (call->state >= RXRPC_CALL_SERVER_ACK_REQUEST) { seq = call->rx_hard_ack; @@ -329,6 +335,7 @@ static int rxrpc_recvmsg_data(struct socket *sock, struct rxrpc_call *call, /* Barriers against rxrpc_input_data(). */ hard_ack = call->rx_hard_ack; seq = hard_ack + 1; + while (top = smp_load_acquire(&call->rx_top), before_eq(seq, top) ) { @@ -356,7 +363,8 @@ static int rxrpc_recvmsg_data(struct socket *sock, struct rxrpc_call *call, if (rx_pkt_offset == 0) { ret2 = rxrpc_locate_data(call, skb, &call->rxtx_annotations[ix], - &rx_pkt_offset, &rx_pkt_len); + &rx_pkt_offset, &rx_pkt_len, + &rx_pkt_last); trace_rxrpc_recvmsg(call, rxrpc_recvmsg_next, seq, rx_pkt_offset, rx_pkt_len, ret2); if (ret2 < 0) { @@ -396,13 +404,12 @@ static int rxrpc_recvmsg_data(struct socket *sock, struct rxrpc_call *call, } /* The whole packet has been transferred. */ - last = sp->hdr.flags & RXRPC_LAST_PACKET; if (!(flags & MSG_PEEK)) rxrpc_rotate_rx_window(call); rx_pkt_offset = 0; rx_pkt_len = 0; - if (last) { + if (rx_pkt_last) { ASSERTCMP(seq, ==, READ_ONCE(call->rx_top)); ret = 1; goto out; @@ -415,6 +422,7 @@ out: if (!(flags & MSG_PEEK)) { call->rx_pkt_offset = rx_pkt_offset; call->rx_pkt_len = rx_pkt_len; + call->rx_pkt_last = rx_pkt_last; } done: trace_rxrpc_recvmsg(call, rxrpc_recvmsg_data_return, seq, |