ieee802154: 6lowpan: remove tx full-size calc workaround

This patch removes a workaround for datagram_size calculation while
doing fragmentation on transmit.

Reviewed-by: Stefan Schmidt <stefan@osg.samsung.com>
Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>

1 files changed, 0 insertions, 113 deletions

diff --git a/include/net/6lowpan.h b/include/net/6lowpan.h
index 35098411dbb4..eeae5eb58754 100644
--- a/include/net/6lowpan.h
+++ b/include/net/6lowpan.h
@@ -299,119 +299,6 @@ static inline void lowpan_push_hc_data(u8 **hc_ptr, const void *data,
 	*hc_ptr += len;
 }
 
-static inline u8 lowpan_addr_mode_size(const u8 addr_mode)
-{
-	static const u8 addr_sizes[] = {
-		[LOWPAN_IPHC_ADDR_00] = 16,
-		[LOWPAN_IPHC_ADDR_01] = 8,
-		[LOWPAN_IPHC_ADDR_02] = 2,
-		[LOWPAN_IPHC_ADDR_03] = 0,
-	};
-	return addr_sizes[addr_mode];
-}
-
-static inline u8 lowpan_next_hdr_size(const u8 h_enc, u16 *uncomp_header)
-{
-	u8 ret = 1;
-
-	if ((h_enc & LOWPAN_NHC_UDP_MASK) == LOWPAN_NHC_UDP_ID) {
-		*uncomp_header += sizeof(struct udphdr);
-
-		switch (h_enc & LOWPAN_NHC_UDP_CS_P_11) {
-		case LOWPAN_NHC_UDP_CS_P_00:
-			ret += 4;
-			break;
-		case LOWPAN_NHC_UDP_CS_P_01:
-		case LOWPAN_NHC_UDP_CS_P_10:
-			ret += 3;
-			break;
-		case LOWPAN_NHC_UDP_CS_P_11:
-			ret++;
-			break;
-		default:
-			break;
-		}
-
-		if (!(h_enc & LOWPAN_NHC_UDP_CS_C))
-			ret += 2;
-	}
-
-	return ret;
-}
-
-/**
- *	lowpan_uncompress_size - returns skb->len size with uncompressed header
- *	@skb: sk_buff with 6lowpan header inside
- *	@datagram_offset: optional to get the datagram_offset value
- *
- *	Returns the skb->len with uncompressed header
- */
-static inline u16
-lowpan_uncompress_size(const struct sk_buff *skb, u16 *dgram_offset)
-{
-	u16 ret = 2, uncomp_header = sizeof(struct ipv6hdr);
-	u8 iphc0, iphc1, h_enc;
-
-	iphc0 = skb_network_header(skb)[0];
-	iphc1 = skb_network_header(skb)[1];
-
-	switch ((iphc0 & LOWPAN_IPHC_TF) >> 3) {
-	case 0:
-		ret += 4;
-		break;
-	case 1:
-		ret += 3;
-		break;
-	case 2:
-		ret++;
-		break;
-	default:
-		break;
-	}
-
-	if (!(iphc0 & LOWPAN_IPHC_NH_C))
-		ret++;
-
-	if (!(iphc0 & 0x03))
-		ret++;
-
-	ret += lowpan_addr_mode_size((iphc1 & LOWPAN_IPHC_SAM) >>
-				     LOWPAN_IPHC_SAM_BIT);
-
-	if (iphc1 & LOWPAN_IPHC_M) {
-		switch ((iphc1 & LOWPAN_IPHC_DAM_11) >>
-			LOWPAN_IPHC_DAM_BIT) {
-		case LOWPAN_IPHC_DAM_00:
-			ret += 16;
-			break;
-		case LOWPAN_IPHC_DAM_01:
-			ret += 6;
-			break;
-		case LOWPAN_IPHC_DAM_10:
-			ret += 4;
-			break;
-		case LOWPAN_IPHC_DAM_11:
-			ret++;
-			break;
-		default:
-			break;
-		}
-	} else {
-		ret += lowpan_addr_mode_size((iphc1 & LOWPAN_IPHC_DAM_11) >>
-					     LOWPAN_IPHC_DAM_BIT);
-	}
-
-	if (iphc0 & LOWPAN_IPHC_NH_C) {
-		h_enc = skb_network_header(skb)[ret];
-		ret += lowpan_next_hdr_size(h_enc, &uncomp_header);
-	}
-
-	if (dgram_offset)
-		*dgram_offset = uncomp_header;
-
-	return skb->len + uncomp_header - ret;
-}
-
 void lowpan_netdev_setup(struct net_device *dev, enum lowpan_lltypes lltype);
 
 int