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6lowpan: udp use subtraction on both conditions

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Cleanup code to handle both calculation in the same way.

Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
This commit is contained in:
Alexander Aring 2013-12-17 14:21:27 +01:00 • committed by Marcel Holtmann
parent 1672a36b73
commit 45939d2570
1 changed files with 1 additions and 1 deletions
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2
net/ieee802154/6lowpan_iphc.c
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@ -557,7 +557,7 @@ static void compress_udp_header(u8 **hc06_ptr, struct sk_buff *skb)
lowpan_push_hc_data(hc06_ptr, &tmp, sizeof(tmp));
tmp = /* subtraction is faster */
(u8)((ntohs(uh->dest) - LOWPAN_NHC_UDP_4BIT_PORT) +
((ntohs(uh->source) & LOWPAN_NHC_UDP_4BIT_PORT) << 4));
((ntohs(uh->source) - LOWPAN_NHC_UDP_4BIT_PORT) << 4));
lowpan_push_hc_data(hc06_ptr, &tmp, sizeof(tmp));
} else if ((ntohs(uh->dest) & LOWPAN_NHC_UDP_8BIT_MASK) ==
LOWPAN_NHC_UDP_8BIT_PORT) {