diff options
| author | Willem de Bruijn <willemb@google.com> | 2016-04-07 11:44:58 -0400 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2016-04-11 15:31:33 -0400 |
| commit | 1da8c681d5c122afe9fbadc02e92a0f9e3f7af44 (patch) | |
| tree | 16d382daa5ef48f18f4afe6b0766d35a5a5f45b0 | |
| parent | a6db4494d218c2e559173661ee972e048dc04fdd (diff) | |
| download | linux-1da8c681d5c122afe9fbadc02e92a0f9e3f7af44.tar.bz2 | |
sunrpc: do not pull udp headers on receive
Commit e6afc8ace6dd modified the udp receive path by pulling the udp
header before queuing an skbuff onto the receive queue.
Sunrpc also calls skb_recv_datagram to dequeue an skb from a udp
socket. Modify this receive path to also no longer expect udp
headers.
Fixes: e6afc8ace6dd ("udp: remove headers from UDP packets before queueing")
Reported-by: Franklin S Cooper Jr. <fcooper@ti.com>
Signed-off-by: Willem de Bruijn <willemb@google.com>
Tested-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | net/sunrpc/socklib.c | 2 | ||||
| -rw-r--r-- | net/sunrpc/svcsock.c | 5 | ||||
| -rw-r--r-- | net/sunrpc/xprtsock.c | 5 |
3 files changed, 5 insertions, 7 deletions
diff --git a/net/sunrpc/socklib.c b/net/sunrpc/socklib.c index de70c78025d7..f217c348b341 100644 --- a/net/sunrpc/socklib.c +++ b/net/sunrpc/socklib.c @@ -155,7 +155,7 @@ int csum_partial_copy_to_xdr(struct xdr_buf *xdr, struct sk_buff *skb) struct xdr_skb_reader desc; desc.skb = skb; - desc.offset = sizeof(struct udphdr); + desc.offset = 0; desc.count = skb->len - desc.offset; if (skb_csum_unnecessary(skb)) diff --git a/net/sunrpc/svcsock.c b/net/sunrpc/svcsock.c index 1413cdcc131c..71d6072664d2 100644 --- a/net/sunrpc/svcsock.c +++ b/net/sunrpc/svcsock.c @@ -617,7 +617,7 @@ static int svc_udp_recvfrom(struct svc_rqst *rqstp) svsk->sk_sk->sk_stamp = skb->tstamp; set_bit(XPT_DATA, &svsk->sk_xprt.xpt_flags); /* there may be more data... */ - len = skb->len - sizeof(struct udphdr); + len = skb->len; rqstp->rq_arg.len = len; rqstp->rq_prot = IPPROTO_UDP; @@ -641,8 +641,7 @@ static int svc_udp_recvfrom(struct svc_rqst *rqstp) skb_free_datagram_locked(svsk->sk_sk, skb); } else { /* we can use it in-place */ - rqstp->rq_arg.head[0].iov_base = skb->data + - sizeof(struct udphdr); + rqstp->rq_arg.head[0].iov_base = skb->data; rqstp->rq_arg.head[0].iov_len = len; if (skb_checksum_complete(skb)) goto out_free; diff --git a/net/sunrpc/xprtsock.c b/net/sunrpc/xprtsock.c index 65e759569e48..c1fc7b20bbc1 100644 --- a/net/sunrpc/xprtsock.c +++ b/net/sunrpc/xprtsock.c @@ -995,15 +995,14 @@ static void xs_udp_data_read_skb(struct rpc_xprt *xprt, u32 _xid; __be32 *xp; - repsize = skb->len - sizeof(struct udphdr); + repsize = skb->len; if (repsize < 4) { dprintk("RPC: impossible RPC reply size %d!\n", repsize); return; } /* Copy the XID from the skb... */ - xp = skb_header_pointer(skb, sizeof(struct udphdr), - sizeof(_xid), &_xid); + xp = skb_header_pointer(skb, 0, sizeof(_xid), &_xid); if (xp == NULL) return; |