[TCP]: Introduce tcp_hdrlen() and tcp_optlen()
The ip_hdrlen() buddy, created to reduce the number of skb->h.th-> uses and to
avoid the longer, open coded equivalent.
Ditched a no-op in bnx2 in the process.
I wonder if we should have a BUG_ON(skb->h.th->doff < 5) in tcp_optlen()...
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/bnx2.c b/drivers/net/bnx2.c
index eb0c4f1..73512fb 100644
--- a/drivers/net/bnx2.c
+++ b/drivers/net/bnx2.c
@@ -4521,13 +4521,12 @@
return NETDEV_TX_OK;
}
- tcp_opt_len = ((skb->h.th->doff - 5) * 4);
vlan_tag_flags |= TX_BD_FLAGS_SW_LSO;
tcp_opt_len = 0;
- if (skb->h.th->doff > 5) {
- tcp_opt_len = (skb->h.th->doff - 5) << 2;
- }
+ if (skb->h.th->doff > 5)
+ tcp_opt_len = tcp_optlen(skb);
+
ip_tcp_len = ip_hdrlen(skb) + sizeof(struct tcphdr);
iph = ip_hdr(skb);