diff options
| author |   Jesper Juhl <jesper.juhl@gmail.com> | 2006-01-10 13:07:44 -0800 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2006-01-10 13:07:44 -0800 |
| commit | ea2e90dfcee2c09eff8a180976ace071922663a5 (patch) | |
| tree | 8456c8a4b735d12eb4a0c06d10c7e26301dcaa75 /net | |
| parent | [AF_NETLINK]: Fix DoS in netlink_rcv_skb() (diff) | |
| download | linux-dev-ea2e90dfcee2c09eff8a180976ace071922663a5.tar.xz linux-dev-ea2e90dfcee2c09eff8a180976ace071922663a5.zip | |
[RXRPC]: Decrease number of pointer derefs in connection.c
Decrease the number of pointer derefs in net/rxrpc/connection.c
Benefits of the patch:
- Fewer pointer dereferences should make the code slightly faster.
- Size of generated code is smaller
- improved readability
Signed-off-by: Jesper Juhl <jesper.juhl@gmail.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net')
| -rw-r--r-- | net/rxrpc/connection.c | 14 |
1 files changed, 8 insertions, 6 deletions
diff --git a/net/rxrpc/connection.c b/net/rxrpc/connection.c index 2ba14a75dbbe..0e0a4553499f 100644 --- a/net/rxrpc/connection.c +++ b/net/rxrpc/connection.c @@ -220,6 +220,7 @@ int rxrpc_connection_lookup(struct rxrpc_peer *peer, { struct rxrpc_connection *conn, *candidate = NULL; struct list_head *_p; + struct sk_buff *pkt = msg->pkt; int ret, fresh = 0; __be32 x_epoch, x_connid; __be16 x_port, x_servid; @@ -229,10 +230,10 @@ int rxrpc_connection_lookup(struct rxrpc_peer *peer, _enter("%p{{%hu}},%u,%hu", peer, peer->trans->port, - ntohs(msg->pkt->h.uh->source), + ntohs(pkt->h.uh->source), ntohs(msg->hdr.serviceId)); - x_port = msg->pkt->h.uh->source; + x_port = pkt->h.uh->source; x_epoch = msg->hdr.epoch; x_clflag = msg->hdr.flags & RXRPC_CLIENT_INITIATED; x_connid = htonl(ntohl(msg->hdr.cid) & RXRPC_CIDMASK); @@ -267,7 +268,7 @@ int rxrpc_connection_lookup(struct rxrpc_peer *peer, /* fill in the specifics */ candidate->addr.sin_family = AF_INET; candidate->addr.sin_port = x_port; - candidate->addr.sin_addr.s_addr = msg->pkt->nh.iph->saddr; + candidate->addr.sin_addr.s_addr = pkt->nh.iph->saddr; candidate->in_epoch = x_epoch; candidate->out_epoch = x_epoch; candidate->in_clientflag = RXRPC_CLIENT_INITIATED; @@ -675,6 +676,7 @@ int rxrpc_conn_receive_call_packet(struct rxrpc_connection *conn, struct rxrpc_message *msg) { struct rxrpc_message *pmsg; + struct dst_entry *dst; struct list_head *_p; unsigned cix, seq; int ret = 0; @@ -710,10 +712,10 @@ int rxrpc_conn_receive_call_packet(struct rxrpc_connection *conn, call->pkt_rcv_count++; - if (msg->pkt->dst && msg->pkt->dst->dev) + dst = msg->pkt->dst; + if (dst && dst->dev) conn->peer->if_mtu = - msg->pkt->dst->dev->mtu - - msg->pkt->dst->dev->hard_header_len; + dst->dev->mtu - dst->dev->hard_header_len; /* queue on the call in seq order */ rxrpc_get_message(msg); |